/* Copyright (c) 2011-2012 Red Hat, Inc. This file is part of GlusterFS. This file is licensed to you under your choice of the GNU Lesser General Public License, version 3 or any later version (LGPLv3 or later), or the GNU General Public License, version 2 (GPLv2), in all cases as published by the Free Software Foundation. */ #ifndef _CONFIG_H #define _CONFIG_H #include "config.h" #endif #include "common-utils.h" #include "cli1-xdr.h" #include "xdr-generic.h" #include "glusterd.h" #include "glusterd-op-sm.h" #include "glusterd-geo-rep.h" #include "glusterd-store.h" #include "glusterd-utils.h" #include "glusterd-volgen.h" #include "glusterd-svc-helper.h" #include "run.h" #include "syscall.h" #include "glusterd-messages.h" #include static int dict_get_param (dict_t *dict, char *key, char **param); struct gsync_config_opt_vals_ gsync_confopt_vals[] = { {.op_name = "change_detector", .no_of_pos_vals = 2, .case_sensitive = _gf_true, .values = {"xsync", "changelog"}, }, {.op_name = "special_sync_mode", .no_of_pos_vals = 2, .case_sensitive = _gf_true, .values = {"partial", "recover"} }, {.op_name = "log-level", .no_of_pos_vals = 5, .case_sensitive = _gf_false, .values = {"critical", "error", "warning", "info", "debug"} }, {.op_name = "use-tarssh", .no_of_pos_vals = 6, .case_sensitive = _gf_false, .values = {"true", "false", "0", "1", "yes", "no"} }, {.op_name = "ignore_deletes", .no_of_pos_vals = 6, .case_sensitive = _gf_false, .values = {"true", "false", "0", "1", "yes", "no"} }, {.op_name = "use_meta_volume", .no_of_pos_vals = 6, .case_sensitive = _gf_false, .values = {"true", "false", "0", "1", "yes", "no"} }, {.op_name = "use-meta-volume", .no_of_pos_vals = 6, .case_sensitive = _gf_false, .values = {"true", "false", "0", "1", "yes", "no"} }, {.op_name = NULL, }, }; static char *gsync_reserved_opts[] = { "gluster-command-dir", "pid-file", "state-file", "session-owner", "state-socket-unencoded", "socketdir", "local-id", "local-path", "slave-id", NULL }; static char *gsync_no_restart_opts[] = { "checkpoint", NULL }; int __glusterd_handle_sys_exec (rpcsvc_request_t *req) { int32_t ret = 0; dict_t *dict = NULL; gf_cli_req cli_req = {{0},}; glusterd_op_t cli_op = GD_OP_SYS_EXEC; glusterd_conf_t *priv = NULL; char *host_uuid = NULL; char err_str[2048] = {0,}; xlator_t *this = NULL; GF_ASSERT (req); this = THIS; GF_ASSERT (this); priv = this->private; GF_ASSERT (priv); ret = xdr_to_generic (req->msg[0], &cli_req, (xdrproc_t)xdr_gf_cli_req); if (ret < 0) { req->rpc_err = GARBAGE_ARGS; goto out; } if (cli_req.dict.dict_len) { dict = dict_new (); if (!dict) goto out; ret = dict_unserialize (cli_req.dict.dict_val, cli_req.dict.dict_len, &dict); if (ret < 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_UNSERIALIZE_FAIL, "failed to " "unserialize req-buffer to dictionary"); snprintf (err_str, sizeof (err_str), "Unable to decode " "the command"); goto out; } else { dict->extra_stdfree = cli_req.dict.dict_val; } host_uuid = gf_strdup (uuid_utoa(MY_UUID)); if (host_uuid == NULL) { snprintf (err_str, sizeof (err_str), "Failed to get " "the uuid of local glusterd"); ret = -1; goto out; } ret = dict_set_dynstr (dict, "host-uuid", host_uuid); if (ret) goto out; } ret = glusterd_op_begin_synctask (req, cli_op, dict); out: if (ret) { if (err_str[0] == '\0') snprintf (err_str, sizeof (err_str), "Operation failed"); ret = glusterd_op_send_cli_response (cli_op, ret, 0, req, dict, err_str); } return ret; } int __glusterd_handle_copy_file (rpcsvc_request_t *req) { int32_t ret = 0; dict_t *dict = NULL; gf_cli_req cli_req = {{0},}; glusterd_op_t cli_op = GD_OP_COPY_FILE; glusterd_conf_t *priv = NULL; char *host_uuid = NULL; char err_str[2048] = {0,}; xlator_t *this = NULL; GF_ASSERT (req); this = THIS; GF_ASSERT (this); priv = this->private; GF_ASSERT (priv); ret = xdr_to_generic (req->msg[0], &cli_req, (xdrproc_t)xdr_gf_cli_req); if (ret < 0) { req->rpc_err = GARBAGE_ARGS; goto out; } if (cli_req.dict.dict_len) { dict = dict_new (); if (!dict) goto out; ret = dict_unserialize (cli_req.dict.dict_val, cli_req.dict.dict_len, &dict); if (ret < 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_UNSERIALIZE_FAIL, "failed to" "unserialize req-buffer to dictionary"); snprintf (err_str, sizeof (err_str), "Unable to decode " "the command"); goto out; } else { dict->extra_stdfree = cli_req.dict.dict_val; } host_uuid = gf_strdup (uuid_utoa(MY_UUID)); if (host_uuid == NULL) { snprintf (err_str, sizeof (err_str), "Failed to get " "the uuid of local glusterd"); ret = -1; goto out; } ret = dict_set_dynstr (dict, "host-uuid", host_uuid); if (ret) goto out; } ret = glusterd_op_begin_synctask (req, cli_op, dict); out: if (ret) { if (err_str[0] == '\0') snprintf (err_str, sizeof (err_str), "Operation failed"); ret = glusterd_op_send_cli_response (cli_op, ret, 0, req, dict, err_str); } return ret; } int __glusterd_handle_gsync_set (rpcsvc_request_t *req) { int32_t ret = 0; dict_t *dict = NULL; gf_cli_req cli_req = {{0},}; glusterd_op_t cli_op = GD_OP_GSYNC_SET; char *master = NULL; char *slave = NULL; char operation[256] = {0,}; int type = 0; glusterd_conf_t *priv = NULL; char *host_uuid = NULL; char err_str[2048] = {0,}; xlator_t *this = NULL; GF_ASSERT (req); this = THIS; GF_ASSERT (this); priv = this->private; GF_ASSERT (priv); ret = xdr_to_generic (req->msg[0], &cli_req, (xdrproc_t)xdr_gf_cli_req); if (ret < 0) { req->rpc_err = GARBAGE_ARGS; goto out; } if (cli_req.dict.dict_len) { dict = dict_new (); if (!dict) goto out; ret = dict_unserialize (cli_req.dict.dict_val, cli_req.dict.dict_len, &dict); if (ret < 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_UNSERIALIZE_FAIL, "failed to " "unserialize req-buffer to dictionary"); snprintf (err_str, sizeof (err_str), "Unable to decode " "the command"); goto out; } else { dict->extra_stdfree = cli_req.dict.dict_val; } host_uuid = gf_strdup (uuid_utoa(MY_UUID)); if (host_uuid == NULL) { snprintf (err_str, sizeof (err_str), "Failed to get " "the uuid of local glusterd"); ret = -1; goto out; } ret = dict_set_dynstr (dict, "host-uuid", host_uuid); if (ret) goto out; } ret = dict_get_str (dict, "master", &master); if (ret < 0) { gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_DICT_GET_FAILED, "master not found, while handling "GEOREP" options"); master = "(No Master)"; } ret = dict_get_str (dict, "slave", &slave); if (ret < 0) { gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_DICT_GET_FAILED, "slave not found, while handling "GEOREP" options"); slave = "(No Slave)"; } ret = dict_get_int32 (dict, "type", &type); if (ret < 0) { snprintf (err_str, sizeof (err_str), "Command type not found " "while handling "GEOREP" options"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", err_str); goto out; } switch (type) { case GF_GSYNC_OPTION_TYPE_CREATE: strncpy (operation, "create", sizeof (operation)); cli_op = GD_OP_GSYNC_CREATE; break; case GF_GSYNC_OPTION_TYPE_START: strncpy (operation, "start", sizeof (operation)); break; case GF_GSYNC_OPTION_TYPE_STOP: strncpy (operation, "stop", sizeof (operation)); break; case GF_GSYNC_OPTION_TYPE_PAUSE: strncpy (operation, "pause", sizeof (operation)); break; case GF_GSYNC_OPTION_TYPE_RESUME: strncpy (operation, "resume", sizeof (operation)); break; case GF_GSYNC_OPTION_TYPE_CONFIG: strncpy (operation, "config", sizeof (operation)); break; case GF_GSYNC_OPTION_TYPE_STATUS: strncpy (operation, "status", sizeof (operation)); break; } ret = glusterd_op_begin_synctask (req, cli_op, dict); out: if (ret) { if (err_str[0] == '\0') snprintf (err_str, sizeof (err_str), "Operation failed"); ret = glusterd_op_send_cli_response (cli_op, ret, 0, req, dict, err_str); } return ret; } int glusterd_handle_sys_exec (rpcsvc_request_t *req) { return glusterd_big_locked_handler (req, __glusterd_handle_sys_exec); } int glusterd_handle_copy_file (rpcsvc_request_t *req) { return glusterd_big_locked_handler (req, __glusterd_handle_copy_file); } int glusterd_handle_gsync_set (rpcsvc_request_t *req) { return glusterd_big_locked_handler (req, __glusterd_handle_gsync_set); } /***** * * glusterd_urltransform* internal API * *****/ static void glusterd_urltransform_init (runner_t *runner, const char *transname) { runinit (runner); runner_add_arg (runner, GSYNCD_PREFIX"/gsyncd"); runner_argprintf (runner, "--%s-url", transname); } static void glusterd_urltransform_add (runner_t *runner, const char *url) { runner_add_arg (runner, url); } /* Helper routine to terminate just before slave_voluuid */ static int32_t parse_slave_url (char *slv_url, char **slave) { char *tmp = NULL; xlator_t *this = NULL; int32_t ret = -1; this = THIS; /* slave format: * master_node_uuid:ssh://slave_host::slave_vol:slave_voluuid */ *slave = strchr (slv_url, ':'); if (!(*slave)) { goto out; } (*slave)++; /* To terminate at : before slave volume uuid */ tmp = strstr (*slave, "::"); if (!tmp) { goto out; } tmp += 2; tmp = strchr (tmp, ':'); if (!tmp) { goto out; } else *tmp = '\0'; ret = 0; gf_msg_debug (this->name, 0, "parse slave: %s !!", *slave); out: return ret; } static int _glusterd_urltransform_add_iter (dict_t *dict, char *key, data_t *value, void *data) { runner_t *runner = (runner_t *)data; char slv_url[VOLINFO_SLAVE_URL_MAX] = {0}; char *slave = NULL; xlator_t *this = NULL; int32_t ret = -1; this = THIS; GF_VALIDATE_OR_GOTO ("glusterd", this, out); gf_msg_debug (this->name, 0, "value->data %s", value->data); strncpy (slv_url, value->data, sizeof(slv_url)); ret = parse_slave_url (slv_url, &slave); if (ret == -1) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_VOL_PARSE_FAIL, "Error in parsing slave: %s!", value->data); goto out; } runner_add_arg (runner, slave); ret = 0; out: return ret; } static void glusterd_urltransform_free (char **linearr, unsigned n) { int i = 0; for (; i < n; i++) GF_FREE (linearr[i]); GF_FREE (linearr); } static int glusterd_urltransform (runner_t *runner, char ***linearrp) { char **linearr = NULL; char *line = NULL; unsigned arr_len = 32; unsigned arr_idx = 0; gf_boolean_t error = _gf_false; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); linearr = GF_CALLOC (arr_len, sizeof (char *), gf_gld_mt_linearr); if (!linearr) { error = _gf_true; goto out; } runner_redir (runner, STDOUT_FILENO, RUN_PIPE); if (runner_start (runner) != 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SPAWNING_CHILD_FAILED, "spawning child failed"); error = _gf_true; goto out; } arr_idx = 0; for (;;) { size_t len; line = GF_MALLOC (1024, gf_gld_mt_linebuf); if (!line) { error = _gf_true; goto out; } if (fgets (line, 1024, runner_chio (runner, STDOUT_FILENO)) == NULL) break; len = strlen (line); if (len == 0 || line[len - 1] != '\n') { GF_FREE (line); error = _gf_true; goto out; } line[len - 1] = '\0'; if (arr_idx == arr_len) { void *p = linearr; arr_len <<= 1; p = GF_REALLOC (linearr, arr_len); if (!p) { GF_FREE (line); error = _gf_true; goto out; } linearr = p; } linearr[arr_idx] = line; arr_idx++; } out: /* XXX chpid field is not exported by run API * but runner_end() does not abort the invoked * process (ie. it might block in waitpid(2)) * so we resort to a manual kill a the private field */ if (error && runner->chpid > 0) kill (runner->chpid, SIGKILL); if (runner_end (runner) != 0) error = _gf_true; if (error) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_READ_CHILD_DATA_FAILED, "reading data from child failed"); glusterd_urltransform_free (linearr, arr_idx); return -1; } *linearrp = linearr; return arr_idx; } static int glusterd_urltransform_single (const char *url, const char *transname, char ***linearrp) { runner_t runner = {0,}; glusterd_urltransform_init (&runner, transname); glusterd_urltransform_add (&runner, url); return glusterd_urltransform (&runner, linearrp); } struct dictidxmark { unsigned isrch; unsigned ithis; char *ikey; }; struct slave_vol_config { char old_slvhost[_POSIX_HOST_NAME_MAX+1]; char slave_voluuid[GF_UUID_BUF_SIZE]; unsigned old_slvidx; }; static int _dict_mark_atindex (dict_t *dict, char *key, data_t *value, void *data) { struct dictidxmark *dim = data; if (dim->isrch == dim->ithis) dim->ikey = key; dim->ithis++; return 0; } static char * dict_get_by_index (dict_t *dict, unsigned i) { struct dictidxmark dim = {0,}; dim.isrch = i; dict_foreach (dict, _dict_mark_atindex, &dim); return dim.ikey; } static int glusterd_get_slave (glusterd_volinfo_t *vol, const char *slaveurl, char **slavekey) { runner_t runner = {0,}; int n = 0; int i = 0; char **linearr = NULL; int32_t ret = 0; glusterd_urltransform_init (&runner, "canonicalize"); ret = dict_foreach (vol->gsync_slaves, _glusterd_urltransform_add_iter, &runner); if (ret < 0) return -2; glusterd_urltransform_add (&runner, slaveurl); n = glusterd_urltransform (&runner, &linearr); if (n == -1) return -2; for (i = 0; i < n - 1; i++) { if (strcmp (linearr[i], linearr[n - 1]) == 0) break; } glusterd_urltransform_free (linearr, i); if (i < n - 1) *slavekey = dict_get_by_index (vol->gsync_slaves, i); else i = -1; return i; } static int glusterd_query_extutil_generic (char *resbuf, size_t blen, runner_t *runner, void *data, int (*fcbk)(char *resbuf, size_t blen, FILE *fp, void *data)) { int ret = 0; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); runner_redir (runner, STDOUT_FILENO, RUN_PIPE); if (runner_start (runner) != 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SPAWNING_CHILD_FAILED, "spawning child failed"); return -1; } ret = fcbk (resbuf, blen, runner_chio (runner, STDOUT_FILENO), data); ret |= runner_end (runner); if (ret) gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_READ_CHILD_DATA_FAILED, "reading data from child failed"); return ret ? -1 : 0; } static int _fcbk_singleline(char *resbuf, size_t blen, FILE *fp, void *data) { char *ptr = NULL; errno = 0; ptr = fgets (resbuf, blen, fp); if (ptr) { size_t len = strlen(resbuf); if (len && resbuf[len-1] == '\n') resbuf[len-1] = '\0'; //strip off \n } return errno ? -1 : 0; } static int glusterd_query_extutil (char *resbuf, runner_t *runner) { return glusterd_query_extutil_generic (resbuf, PATH_MAX, runner, NULL, _fcbk_singleline); } static int glusterd_get_slave_voluuid (char *slave_host, char *slave_vol, char *vol_uuid) { runner_t runner = {0,}; glusterd_conf_t *priv = NULL; xlator_t *this = NULL; int ret = -1; this = THIS; GF_VALIDATE_OR_GOTO ("glusterd", this, out); priv = this->private; GF_VALIDATE_OR_GOTO (this->name, priv, out); runinit (&runner); runner_add_arg (&runner, GSYNCD_PREFIX"/gsyncd"); runner_add_arg (&runner, "--slavevoluuid-get"); runner_argprintf (&runner, "%s::%s", slave_host, slave_vol); synclock_unlock (&priv->big_lock); ret = glusterd_query_extutil (vol_uuid, &runner); synclock_lock (&priv->big_lock); out: return ret; } static int _fcbk_conftodict (char *resbuf, size_t blen, FILE *fp, void *data) { char *ptr = NULL; dict_t *dict = data; char *v = NULL; for (;;) { errno = 0; ptr = fgets (resbuf, blen, fp); if (!ptr) break; v = resbuf + strlen(resbuf) - 1; while (isspace (*v)) /* strip trailing space */ *v-- = '\0'; if (v == resbuf) /* skip empty line */ continue; v = strchr (resbuf, ':'); if (!v) return -1; *v++ = '\0'; while (isspace (*v)) v++; v = gf_strdup (v); if (!v) return -1; if (dict_set_dynstr (dict, resbuf, v) != 0) { GF_FREE (v); return -1; } } return errno ? -1 : 0; } static int glusterd_gsync_get_config (char *master, char *slave, char *conf_path, dict_t *dict) { /* key + value, where value must be able to accommodate a path */ char resbuf[256 + PATH_MAX] = {0,}; runner_t runner = {0,}; runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gsyncd", "-c", NULL); runner_argprintf (&runner, "%s", conf_path); runner_argprintf (&runner, "--iprefix=%s", DATADIR); runner_argprintf (&runner, ":%s", master); runner_add_args (&runner, slave, "--config-get-all", NULL); return glusterd_query_extutil_generic (resbuf, sizeof (resbuf), &runner, dict, _fcbk_conftodict); } static int _fcbk_statustostruct (char *resbuf, size_t blen, FILE *fp, void *data) { char *ptr = NULL; char *v = NULL; char *k = NULL; gf_gsync_status_t *sts_val = NULL; sts_val = (gf_gsync_status_t *)data; for (;;) { errno = 0; ptr = fgets (resbuf, blen, fp); if (!ptr) break; v = resbuf + strlen(resbuf) - 1; while (isspace (*v)) /* strip trailing space */ *v-- = '\0'; if (v == resbuf) /* skip empty line */ continue; v = strchr (resbuf, ':'); if (!v) return -1; *v++ = '\0'; while (isspace (*v)) v++; v = gf_strdup (v); if (!v) return -1; k = gf_strdup (resbuf); if (!k) return -1; if (strcmp (k, "worker_status") == 0) { memcpy (sts_val->worker_status, v, strlen(v)); sts_val->worker_status[strlen(v)] = '\0'; } else if (strcmp (k, "slave_node") == 0) { memcpy (sts_val->slave_node, v, strlen(v)); sts_val->slave_node[strlen(v)] = '\0'; } else if (strcmp (k, "crawl_status") == 0) { memcpy (sts_val->crawl_status, v, strlen(v)); sts_val->crawl_status[strlen(v)] = '\0'; } else if (strcmp (k, "last_synced") == 0) { memcpy (sts_val->last_synced, v, strlen(v)); sts_val->last_synced[strlen(v)] = '\0'; } else if (strcmp (k, "last_synced_utc") == 0) { memcpy (sts_val->last_synced_utc, v, strlen(v)); sts_val->last_synced_utc[strlen(v)] = '\0'; } else if (strcmp (k, "entry") == 0) { memcpy (sts_val->entry, v, strlen(v)); sts_val->entry[strlen(v)] = '\0'; } else if (strcmp (k, "data") == 0) { memcpy (sts_val->data, v, strlen(v)); sts_val->data[strlen(v)] = '\0'; } else if (strcmp (k, "meta") == 0) { memcpy (sts_val->meta, v, strlen(v)); sts_val->meta[strlen(v)] = '\0'; } else if (strcmp (k, "failures") == 0) { memcpy (sts_val->failures, v, strlen(v)); sts_val->failures[strlen(v)] = '\0'; } else if (strcmp (k, "checkpoint_time") == 0) { memcpy (sts_val->checkpoint_time, v, strlen(v)); sts_val->checkpoint_time[strlen(v)] = '\0'; } else if (strcmp (k, "checkpoint_time_utc") == 0) { memcpy (sts_val->checkpoint_time_utc, v, strlen(v)); sts_val->checkpoint_time_utc[strlen(v)] = '\0'; } else if (strcmp (k, "checkpoint_completed") == 0) { memcpy (sts_val->checkpoint_completed, v, strlen(v)); sts_val->checkpoint_completed[strlen(v)] = '\0'; } else if (strcmp (k, "checkpoint_completion_time") == 0) { memcpy (sts_val->checkpoint_completion_time, v, strlen(v)); sts_val->checkpoint_completion_time[strlen(v)] = '\0'; } else if (strcmp (k, "checkpoint_completion_time_utc") == 0) { memcpy (sts_val->checkpoint_completion_time_utc, v, strlen(v)); sts_val->checkpoint_completion_time_utc[strlen(v)] = '\0'; } } return errno ? -1 : 0; } static int glusterd_gsync_get_status (char *master, char *slave, char *conf_path, char *brick_path, gf_gsync_status_t *sts_val) { /* key + value, where value must be able to accommodate a path */ char resbuf[256 + PATH_MAX] = {0,}; runner_t runner = {0,}; runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gsyncd", "-c", NULL); runner_argprintf (&runner, "%s", conf_path); runner_argprintf (&runner, "--iprefix=%s", DATADIR); runner_argprintf (&runner, ":%s", master); runner_add_args (&runner, slave, "--status-get", NULL); runner_add_args (&runner, "--path", brick_path, NULL); return glusterd_query_extutil_generic (resbuf, sizeof (resbuf), &runner, sts_val, _fcbk_statustostruct); } static int glusterd_gsync_get_param_file (char *prmfile, const char *param, char *master, char *slave, char *conf_path) { runner_t runner = {0,}; runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gsyncd", "-c", NULL); runner_argprintf (&runner, "%s", conf_path); runner_argprintf (&runner, "--iprefix=%s", DATADIR); runner_argprintf (&runner, ":%s", master); runner_add_args (&runner, slave, "--config-get", NULL); runner_argprintf (&runner, "%s-file", param); return glusterd_query_extutil (prmfile, &runner); } static int gsyncd_getpidfile (char *master, char *slave, char *pidfile, char *conf_path, gf_boolean_t *is_template_in_use) { char temp_conf_path[PATH_MAX] = ""; char *working_conf_path = NULL; glusterd_conf_t *priv = NULL; int ret = -1; struct stat stbuf = {0,}; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (this->private); GF_ASSERT (conf_path); priv = this->private; GF_VALIDATE_OR_GOTO ("gsync", master, out); GF_VALIDATE_OR_GOTO ("gsync", slave, out); snprintf (temp_conf_path, sizeof(temp_conf_path) - 1, "%s/"GSYNC_CONF_TEMPLATE, priv->workdir); ret = lstat (conf_path, &stbuf); if (!ret) { gf_msg_debug (this->name, 0, "Using passed config template(%s).", conf_path); working_conf_path = conf_path; } else { gf_msg (this->name, GF_LOG_WARNING, ENOENT, GD_MSG_FILE_OP_FAILED, "Config file (%s) missing. Looking for template " "config file (%s)", conf_path, temp_conf_path); ret = lstat (temp_conf_path, &stbuf); if (ret) { gf_msg (this->name, GF_LOG_ERROR, ENOENT, GD_MSG_FILE_OP_FAILED, "Template config file (%s) missing.", temp_conf_path); goto out; } gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_DEFAULT_TEMP_CONFIG, "Using default config template(%s).", temp_conf_path); working_conf_path = temp_conf_path; *is_template_in_use = _gf_true; } fetch_data: ret = glusterd_gsync_get_param_file (pidfile, "pid", master, slave, working_conf_path); if ((ret == -1) || strlen(pidfile) == 0) { if (*is_template_in_use == _gf_false) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_PIDFILE_CREATE_FAILED, "failed to create the pidfile string. " "Trying default config template"); working_conf_path = temp_conf_path; *is_template_in_use = _gf_true; goto fetch_data; } else { ret = -2; gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_PIDFILE_CREATE_FAILED, "failed to " "create the pidfile string from template " "config"); goto out; } } gf_msg_debug (this->name, 0, "pidfile = %s", pidfile); ret = open (pidfile, O_RDWR); out: return ret; } static int gsync_status_byfd (int fd) { GF_ASSERT (fd >= -1); if (lockf (fd, F_TEST, 0) == -1 && (errno == EAGAIN || errno == EACCES)) /* gsyncd keeps the pidfile locked */ return 0; return -1; } /* status: return 0 when gsync is running * return -1 when not running */ int gsync_status (char *master, char *slave, char *conf_path, int *status, gf_boolean_t *is_template_in_use) { char pidfile[PATH_MAX] = {0,}; int fd = -1; fd = gsyncd_getpidfile (master, slave, pidfile, conf_path, is_template_in_use); if (fd == -2) return -1; *status = gsync_status_byfd (fd); sys_close (fd); return 0; } static int32_t glusterd_gsync_volinfo_dict_set (glusterd_volinfo_t *volinfo, char *key, char *value) { int32_t ret = -1; char *gsync_status = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); gsync_status = gf_strdup (value); if (!gsync_status) { gf_msg (this->name, GF_LOG_ERROR, ENOMEM, GD_MSG_NO_MEMORY, "Unable to allocate memory"); goto out; } ret = dict_set_dynstr (volinfo->dict, key, gsync_status); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to set dict"); goto out; } ret = 0; out: return 0; } static int glusterd_verify_gsyncd_spawn (char *master, char *slave) { int ret = 0; runner_t runner = {0,}; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gsyncd", "--verify", "spawning", NULL); runner_argprintf (&runner, ":%s", master); runner_add_args (&runner, slave, NULL); runner_redir (&runner, STDOUT_FILENO, RUN_PIPE); ret = runner_start (&runner); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SPAWNING_CHILD_FAILED, "spawning child failed"); ret = -1; goto out; } if (runner_end (&runner) != 0) ret = -1; out: gf_msg_debug (this->name, 0, "returning %d", ret); return ret; } static int gsync_verify_config_options (dict_t *dict, char **op_errstr, char *volname) { char **resopt = NULL; int i = 0; int ret = -1; char *subop = NULL; char *slave = NULL; char *op_name = NULL; char *op_value = NULL; char *t = NULL; char errmsg[PATH_MAX] = ""; gf_boolean_t banned = _gf_true; gf_boolean_t op_match = _gf_true; gf_boolean_t val_match = _gf_true; struct gsync_config_opt_vals_ *conf_vals = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); if (dict_get_str (dict, "subop", &subop) != 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, "missing subop"); *op_errstr = gf_strdup ("Invalid config request"); return -1; } if (dict_get_str (dict, "slave", &slave) != 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, GEOREP" CONFIG: no slave given"); *op_errstr = gf_strdup ("Slave required"); return -1; } if (strcmp (subop, "get-all") == 0) return 0; if (dict_get_str (dict, "op_name", &op_name) != 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, "option name missing"); *op_errstr = gf_strdup ("Option name missing"); return -1; } if (runcmd (GSYNCD_PREFIX"/gsyncd", "--config-check", op_name, NULL)) { ret = glusterd_verify_gsyncd_spawn (volname, slave); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GSYNCD_SPAWN_FAILED, "Unable to spawn " "gsyncd"); return 0; } gf_msg (this->name, GF_LOG_WARNING, EINVAL, GD_MSG_INVALID_ENTRY, "Invalid option %s", op_name); *op_errstr = gf_strdup ("Invalid option"); return -1; } if (strcmp (subop, "get") == 0) return 0; t = strtail (subop, "set"); if (!t) t = strtail (subop, "del"); if (!t || (t[0] && strcmp (t, "-glob") != 0)) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_SUBOP_NOT_FOUND, "unknown subop %s", subop); *op_errstr = gf_strdup ("Invalid config request"); return -1; } if (strtail (subop, "set") && dict_get_str (dict, "op_value", &op_value) != 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, "missing value for set"); *op_errstr = gf_strdup ("missing value"); } /* match option name against reserved options, modulo -/_ * difference */ for (resopt = gsync_reserved_opts; *resopt; resopt++) { banned = _gf_true; for (i = 0; (*resopt)[i] && op_name[i]; i++) { if ((*resopt)[i] == op_name[i] || ((*resopt)[i] == '-' && op_name[i] == '_')) continue; banned = _gf_false; } if (banned) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_RESERVED_OPTION, "Reserved option %s", op_name); *op_errstr = gf_strdup ("Reserved option"); return -1; break; } } /* Check options in gsync_confopt_vals for invalid values */ for (conf_vals = gsync_confopt_vals; conf_vals->op_name; conf_vals++) { op_match = _gf_true; for (i = 0; conf_vals->op_name[i] && op_name[i]; i++) { if (conf_vals->op_name[i] == op_name[i] || (conf_vals->op_name[i] == '_' && op_name[i] == '-')) continue; op_match = _gf_false; } if (op_match) { if (!op_value) goto out; val_match = _gf_false; for (i = 0; i < conf_vals->no_of_pos_vals; i++) { if(conf_vals->case_sensitive){ if (!strcmp (conf_vals->values[i], op_value)) val_match = _gf_true; } else { if (!strcasecmp (conf_vals->values[i], op_value)) val_match = _gf_true; } } if (!val_match) { ret = snprintf (errmsg, sizeof(errmsg) - 1, "Invalid value(%s) for" " option %s", op_value, op_name); errmsg[ret] = '\0'; gf_msg (this->name, GF_LOG_ERROR, EINVAL, GD_MSG_INVALID_ENTRY, "%s", errmsg); *op_errstr = gf_strdup (errmsg); return -1; } } } out: return 0; } static int glusterd_get_gsync_status_mst_slv (glusterd_volinfo_t *volinfo, char *slave, char *conf_path, dict_t *rsp_dict, char *node); static int _get_status_mst_slv (dict_t *dict, char *key, data_t *value, void *data) { glusterd_gsync_status_temp_t *param = NULL; char *slave = NULL; char *slave_buf = NULL; char *slave_url = NULL; char *slave_vol = NULL; char *slave_host = NULL; char *errmsg = NULL; char conf_path[PATH_MAX] = ""; int ret = -1; glusterd_conf_t *priv = NULL; xlator_t *this = NULL; char slv_url[VOLINFO_SLAVE_URL_MAX] = {0}; this = THIS; GF_VALIDATE_OR_GOTO ("glusterd", this, out); param = (glusterd_gsync_status_temp_t *)data; GF_VALIDATE_OR_GOTO (this->name, param, out); GF_VALIDATE_OR_GOTO (this->name, param->volinfo, out); if (this) priv = this->private; GF_VALIDATE_OR_GOTO (this->name, priv, out); strncpy (slv_url, value->data, sizeof(slv_url)); ret = parse_slave_url (slv_url, &slave); if (ret == -1) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_VOL_PARSE_FAIL, "Error in parsing slave: %s!", value->data); goto out; } ret = glusterd_get_slave_info (slave, &slave_url, &slave_host, &slave_vol, &errmsg); if (ret) { if (errmsg) gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "Unable to fetch slave details. Error: %s", errmsg); else gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "Unable to fetch slave details."); ret = -1; goto out; } ret = snprintf (conf_path, sizeof(conf_path) - 1, "%s/"GEOREP"/%s_%s_%s/gsyncd.conf", priv->workdir, param->volinfo->volname, slave_host, slave_vol); conf_path[ret] = '\0'; ret = glusterd_get_gsync_status_mst_slv(param->volinfo, slave, conf_path, param->rsp_dict, param->node); out: if (errmsg) GF_FREE (errmsg); if (slave_buf) GF_FREE(slave_buf); gf_msg_debug (this->name, 0, "Returning %d.", ret); return ret; } static int _get_max_gsync_slave_num (dict_t *dict, char *key, data_t *value, void *data) { int tmp_slvnum = 0; int *slvnum = (int *)data; sscanf (key, "slave%d", &tmp_slvnum); if (tmp_slvnum > *slvnum) *slvnum = tmp_slvnum; return 0; } static int _get_slave_idx_slave_voluuid (dict_t *dict, char *key, data_t *value, void *data) { char *slave_voluuid = NULL; char *slave_info = NULL; xlator_t *this = NULL; struct slave_vol_config *slave_cfg = NULL; int i = 0; int ret = -1; unsigned tmp_slvnum = 0; this = THIS; GF_VALIDATE_OR_GOTO ("glusterd", this, out); slave_cfg = data; if (value) slave_info = value->data; if (!(slave_info) || strlen (slave_info) == 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_INVALID_SLAVE, "Invalid slave in dict"); ret = -2; goto out; } /* slave format: * master_node_uuid:ssh://slave_host::slave_vol:slave_voluuid */ while (i++ < 5) { slave_info = strchr (slave_info, ':'); if (slave_info) slave_info++; else { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_VOL_PARSE_FAIL, "slave_info becomes NULL!"); ret = -2; goto out; } } if (strcmp (slave_info, slave_cfg->slave_voluuid) == 0) { gf_msg_debug (this->name, 0, "Same slave volume " "already present %s", slave_cfg->slave_voluuid); ret = -1; sscanf (key, "slave%d", &tmp_slvnum); slave_cfg->old_slvidx = tmp_slvnum; gf_msg_debug (this->name, 0, "and " "its index is: %d", tmp_slvnum); goto out; } ret = 0; out: return ret; } static int glusterd_remove_slave_in_info (glusterd_volinfo_t *volinfo, char *slave, char **op_errstr) { int zero_slave_entries = _gf_true; int ret = 0; char *slavekey = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (volinfo); GF_ASSERT (slave); do { ret = glusterd_get_slave (volinfo, slave, &slavekey); if (ret < 0 && zero_slave_entries) { ret++; goto out; } zero_slave_entries = _gf_false; dict_del (volinfo->gsync_slaves, slavekey); } while (ret >= 0); ret = glusterd_store_volinfo (volinfo, GLUSTERD_VOLINFO_VER_AC_INCREMENT); if (ret) { *op_errstr = gf_strdup ("Failed to store the Volume" "information"); goto out; } out: gf_msg_debug (this->name, 0, "returning %d", ret); return ret; } static int glusterd_gsync_get_uuid (char *slave, glusterd_volinfo_t *vol, uuid_t uuid) { int ret = 0; char *slavekey = NULL; char *slaveentry = NULL; char *t = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (vol); GF_ASSERT (slave); ret = glusterd_get_slave (vol, slave, &slavekey); if (ret < 0) { /* XXX colliding cases of failure and non-extant * slave... now just doing this as callers of this * function can make sense only of -1 and 0 as retvals; * getting at the proper semanticals will involve * fixing callers as well. */ ret = -1; goto out; } ret = dict_get_str (vol->gsync_slaves, slavekey, &slaveentry); GF_ASSERT (ret == 0); t = strchr (slaveentry, ':'); GF_ASSERT (t); *t = '\0'; ret = gf_uuid_parse (slaveentry, uuid); *t = ':'; out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_check_gsync_running_local (char *master, char *slave, char *conf_path, gf_boolean_t *is_run) { int ret = -1; int ret_status = 0; gf_boolean_t is_template_in_use = _gf_false; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (master); GF_ASSERT (slave); GF_ASSERT (is_run); *is_run = _gf_false; ret = gsync_status (master, slave, conf_path, &ret_status, &is_template_in_use); if (ret == 0 && ret_status == 0) *is_run = _gf_true; else if (ret == -1) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_VALIDATE_FAILED, GEOREP" validation failed"); goto out; } ret = 0; out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } static int glusterd_store_slave_in_info (glusterd_volinfo_t *volinfo, char *slave, char *host_uuid, char *slave_voluuid, char **op_errstr, gf_boolean_t is_force) { int ret = 0; int maxslv = 0; char **linearr = NULL; char *value = NULL; char *slavekey = NULL; char *slaveentry = NULL; char key[512] = {0, }; char *t = NULL; xlator_t *this = NULL; struct slave_vol_config slave1 = {{0},}; this = THIS; GF_ASSERT (this); GF_ASSERT (volinfo); GF_ASSERT (slave); GF_ASSERT (host_uuid); GF_VALIDATE_OR_GOTO (this->name, slave_voluuid, out); ret = glusterd_get_slave (volinfo, slave, &slavekey); switch (ret) { case -2: ret = -1; goto out; case -1: break; default: if (!is_force) GF_ASSERT (ret > 0); ret = dict_get_str (volinfo->gsync_slaves, slavekey, &slaveentry); GF_ASSERT (ret == 0); /* same-name + same-uuid slave entries should have been filtered * out in glusterd_op_verify_gsync_start_options(), so we can * assert an uuid mismatch */ t = strtail (slaveentry, host_uuid); if (!is_force) GF_ASSERT (!t || *t != ':'); if (is_force) { gf_msg_debug (this->name, 0, GEOREP" has already " "been invoked for the %s (master) and " "%s (slave). Allowing without saving " "info again due to force command.", volinfo->volname, slave); ret = 0; goto out; } gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_INVOKE_ERROR, GEOREP" has already been invoked for " "the %s (master) and %s (slave) from a different " "machine", volinfo->volname, slave); *op_errstr = gf_strdup (GEOREP" already running in " "another machine"); ret = -1; goto out; } ret = glusterd_urltransform_single (slave, "normalize", &linearr); if (ret == -1) goto out; ret = gf_asprintf (&value, "%s:%s:%s", host_uuid, linearr[0], slave_voluuid); glusterd_urltransform_free (linearr, 1); if (ret == -1) goto out; /* Given the slave volume uuid, check and get any existing slave */ strncpy (slave1.slave_voluuid, slave_voluuid, GF_UUID_BUF_SIZE); ret = dict_foreach (volinfo->gsync_slaves, _get_slave_idx_slave_voluuid, &slave1); if (ret == 0) { /* New slave */ dict_foreach (volinfo->gsync_slaves, _get_max_gsync_slave_num, &maxslv); snprintf (key, 512, "slave%d", maxslv + 1); ret = dict_set_dynstr (volinfo->gsync_slaves, key, value); if (ret) goto out; } else if (ret == -1) { /* Existing slave */ snprintf (key, 512, "slave%d", slave1.old_slvidx); /* Delete present slave info(with old hostname) */ dict_del (volinfo->gsync_slaves, key); gf_msg_debug (this->name, 0, "Replacing key:%s with new value" ":%s", key, value); /* Add new slave's value, with the same slave index */ ret = dict_set_dynstr (volinfo->gsync_slaves, key, value); if (ret) goto out; } else { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_REMOTE_VOL_UUID_FAIL, "_get_slave_idx_slave_voluuid failed!"); ret = -1; goto out; } ret = glusterd_store_volinfo (volinfo, GLUSTERD_VOLINFO_VER_AC_INCREMENT); if (ret) { *op_errstr = gf_strdup ("Failed to store the Volume " "information"); goto out; } ret = 0; out: return ret; } static int glusterd_op_verify_gsync_start_options (glusterd_volinfo_t *volinfo, char *slave, char *conf_path, char *statefile, char **op_errstr, gf_boolean_t is_force) { int ret = -1; int ret_status = 0; gf_boolean_t is_template_in_use = _gf_false; char msg[2048] = {0}; uuid_t uuid = {0}; glusterd_conf_t *priv = NULL; xlator_t *this = NULL; struct stat stbuf = {0,}; this = THIS; GF_ASSERT (this); GF_ASSERT (volinfo); GF_ASSERT (slave); GF_ASSERT (op_errstr); GF_ASSERT (conf_path); GF_ASSERT (this && this->private); priv = this->private; if (GLUSTERD_STATUS_STARTED != volinfo->status) { snprintf (msg, sizeof (msg), "Volume %s needs to be started " "before "GEOREP" start", volinfo->volname); goto out; } ret = lstat (statefile, &stbuf); if (ret) { snprintf (msg, sizeof (msg), "Session between %s and %s has" " not been created. Please create session and retry.", volinfo->volname, slave); gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_FILE_OP_FAILED, "%s", msg); *op_errstr = gf_strdup (msg); goto out; } /* Check if the gsync slave info is stored. If not * session has not been created */ ret = glusterd_gsync_get_uuid (slave, volinfo, uuid); if (ret) { snprintf (msg, sizeof (msg), "Session between %s and %s has" " not been created. Please create session and retry.", volinfo->volname, slave); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SESSION_CREATE_ERROR, "%s", msg); goto out; } /*Check if the gsync is already started in cmd. inited host * If so initiate add it into the glusterd's priv*/ ret = gsync_status (volinfo->volname, slave, conf_path, &ret_status, &is_template_in_use); if (ret == 0) { if ((ret_status == 0) && !is_force) { snprintf (msg, sizeof (msg), GEOREP " session between" " %s & %s already started", volinfo->volname, slave); ret = -1; goto out; } } else if (ret == -1) { snprintf (msg, sizeof (msg), GEOREP" start option " "validation failed "); goto out; } if (is_template_in_use == _gf_true) { snprintf (msg, sizeof (msg), GEOREP" start " "failed : pid-file entry missing " "in config file."); ret = -1; goto out; } ret = glusterd_verify_gsyncd_spawn (volinfo->volname, slave); if (ret && !is_force) { snprintf (msg, sizeof (msg), "Unable to spawn gsyncd"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GSYNCD_SPAWN_FAILED, "%s", msg); } out: if (ret && (msg[0] != '\0')) { *op_errstr = gf_strdup (msg); } gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } void glusterd_check_geo_rep_configured (glusterd_volinfo_t *volinfo, gf_boolean_t *flag) { GF_ASSERT (volinfo); GF_ASSERT (flag); if (volinfo->gsync_slaves->count) *flag = _gf_true; else *flag = _gf_false; return; } /* * is_geo_rep_active: * This function reads the state_file and sets is_active to 1 if the * monitor status is neither "Stopped" or "Created" * * RETURN VALUE: * 0: On successful read of state_file. * -1: error. */ static int is_geo_rep_active (glusterd_volinfo_t *volinfo, char *slave, char *conf_path, int *is_active) { dict_t *confd = NULL; char *statefile = NULL; char *master = NULL; char monitor_status[PATH_MAX] = ""; int ret = -1; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); master = volinfo->volname; confd = dict_new (); if (!confd) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_CREATE_FAIL, "Not able to create dict."); goto out; } ret = glusterd_gsync_get_config (master, slave, conf_path, confd); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GET_CONFIG_INFO_FAILED, "Unable to get configuration data " "for %s(master), %s(slave)", master, slave); ret = -1; goto out; } ret = dict_get_param (confd, "state_file", &statefile); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get state_file's name " "for %s(master), %s(slave). Please check gsync " "config file.", master, slave); ret = -1; goto out; } ret = glusterd_gsync_read_frm_status (statefile, monitor_status, sizeof (monitor_status)); if (ret <= 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STAT_FILE_READ_FAILED, "Unable to read the status file for %s(master), " "%s(slave)", master, slave); strncpy (monitor_status, "defunct", sizeof (monitor_status)); } if ((!strcmp(monitor_status, "Stopped")) || (!strcmp(monitor_status, "Created"))) { *is_active = 0; } else { *is_active = 1; } ret = 0; out: if (confd) dict_destroy (confd); return ret; } /* * _get_slave_status: * Called for each slave in the volume from dict_foreach. * It calls is_geo_rep_active to get the monitor status. * * RETURN VALUE: * 0: On successful read of state_file from is_geo_rep_active. * When it is found geo-rep is already active from previous calls. * When there is no slave. * -1: On error. */ int _get_slave_status (dict_t *dict, char *key, data_t *value, void *data) { gsync_status_param_t *param = NULL; char *slave = NULL; char *slave_url = NULL; char *slave_vol = NULL; char *slave_host = NULL; char *errmsg = NULL; char conf_path[PATH_MAX] = ""; int ret = -1; glusterd_conf_t *priv = NULL; xlator_t *this = NULL; param = (gsync_status_param_t *)data; GF_ASSERT (param); GF_ASSERT (param->volinfo); if (param->is_active) { ret = 0; goto out; } this = THIS; GF_ASSERT (this); if (this) priv = this->private; if (priv == NULL) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GLUSTERD_PRIV_NOT_FOUND, "priv of glusterd not present"); goto out; } slave = strchr(value->data, ':'); if (!slave) { ret = 0; goto out; } slave++; ret = glusterd_get_slave_info (slave, &slave_url, &slave_host, &slave_vol, &errmsg); if (ret) { if (errmsg) gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "Unable to fetch" " slave details. Error: %s", errmsg); else gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "Unable to fetch slave details."); ret = -1; goto out; } ret = snprintf (conf_path, sizeof(conf_path) - 1, "%s/"GEOREP"/%s_%s_%s/gsyncd.conf", priv->workdir, param->volinfo->volname, slave_host, slave_vol); if (ret < 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_CONF_PATH_ASSIGN_FAILED, "Unable to assign conf_path."); ret = -1; goto out; } conf_path[ret] = '\0'; ret = is_geo_rep_active (param->volinfo,slave, conf_path, ¶m->is_active); out: GF_FREE(errmsg); return ret; } /* glusterd_check_geo_rep_running: * Checks if any geo-rep session is running for the volume. * * RETURN VALUE: * Sets param.active to true if any geo-rep session is active. * This function sets op_errstr during some error and when any geo-rep * session is active. It is caller's responsibility to free op_errstr * in above cases. */ int glusterd_check_geo_rep_running (gsync_status_param_t *param, char **op_errstr) { char msg[2048] = {0,}; gf_boolean_t enabled = _gf_false; int ret = 0; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (param); GF_ASSERT (param->volinfo); GF_ASSERT (op_errstr); glusterd_check_geo_rep_configured (param->volinfo, &enabled); if (enabled) { ret = dict_foreach (param->volinfo->gsync_slaves, _get_slave_status, param); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "_get_slave_satus failed"); snprintf (msg, sizeof(msg), GEOREP" Unable to" " get the status of active "GEOREP"" " session for the volume '%s'.\n" " Please check the log file for" " more info.", param->volinfo->volname); *op_errstr = gf_strdup (msg); ret = -1; goto out; } if (param->is_active) { snprintf (msg, sizeof(msg), GEOREP" sessions" " are active for the volume %s.\nStop" " "GEOREP " sessions involved in this" " volume. Use 'volume "GEOREP " status' command for more info.", param->volinfo->volname); *op_errstr = gf_strdup (msg); goto out; } } out: return ret; } static int glusterd_op_verify_gsync_running (glusterd_volinfo_t *volinfo, char *slave, char *conf_path, char **op_errstr) { int pfd = -1; int ret = -1; char msg[2048] = {0}; char pidfile[PATH_MAX] = {0,}; gf_boolean_t is_template_in_use = _gf_false; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (THIS && THIS->private); GF_ASSERT (volinfo); GF_ASSERT (slave); GF_ASSERT (conf_path); GF_ASSERT (op_errstr); if (GLUSTERD_STATUS_STARTED != volinfo->status) { snprintf (msg, sizeof (msg), "Volume %s needs to be started " "before "GEOREP" start", volinfo->volname); goto out; } pfd = gsyncd_getpidfile (volinfo->volname, slave, pidfile, conf_path, &is_template_in_use); if (pfd == -2) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_VALIDATE_FAILED, GEOREP" stop validation failed for %s & %s", volinfo->volname, slave); ret = -1; goto out; } if (gsync_status_byfd (pfd) == -1) { snprintf (msg, sizeof (msg), GEOREP" session b/w %s & %s is " "not running on this node.", volinfo->volname, slave); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SESSION_INACTIVE, "%s", msg); ret = -1; /* monitor gsyncd already dead */ goto out; } if (is_template_in_use) { snprintf (msg, sizeof (msg), "pid-file entry missing in " "the config file(%s).", conf_path); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_PIDFILE_NOT_FOUND, "%s", msg); ret = -1; goto out; } if (pfd < 0) goto out; ret = 0; out: if (ret && (msg[0] != '\0')) { *op_errstr = gf_strdup (msg); } gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } static int glusterd_verify_gsync_status_opts (dict_t *dict, char **op_errstr) { char *slave = NULL; char *volname = NULL; char errmsg[PATH_MAX] = {0, }; gf_boolean_t exists = _gf_false; glusterd_volinfo_t *volinfo = NULL; int ret = 0; char *conf_path = NULL; char *slave_url = NULL; char *slave_host = NULL; char *slave_vol = NULL; glusterd_conf_t *priv = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); if (THIS) priv = THIS->private; if (priv == NULL) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GLUSTERD_PRIV_NOT_FOUND, "priv of glusterd not present"); *op_errstr = gf_strdup ("glusterd defunct"); goto out; } ret = dict_get_str (dict, "master", &volname); if (ret < 0) { ret = 0; goto out; } exists = glusterd_check_volume_exists (volname); ret = glusterd_volinfo_find (volname, &volinfo); if ((ret) || (!exists)) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_VOL_NOT_FOUND, "volume name does not exist"); snprintf (errmsg, sizeof(errmsg), "Volume name %s does not" " exist", volname); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } ret = dict_get_str (dict, "slave", &slave); if (ret < 0) { ret = 0; goto out; } ret = glusterd_get_slave_details_confpath (volinfo, dict, &slave_url, &slave_host, &slave_vol, &conf_path, op_errstr); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "Unable to fetch slave or confpath details."); ret = -1; goto out; } out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_op_gsync_args_get (dict_t *dict, char **op_errstr, char **master, char **slave, char **host_uuid) { int ret = -1; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (dict); GF_ASSERT (op_errstr); if (master) { ret = dict_get_str (dict, "master", master); if (ret < 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, "master not found"); *op_errstr = gf_strdup ("master not found"); goto out; } } if (slave) { ret = dict_get_str (dict, "slave", slave); if (ret < 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, "slave not found"); *op_errstr = gf_strdup ("slave not found"); goto out; } } if (host_uuid) { ret = dict_get_str (dict, "host-uuid", host_uuid); if (ret < 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, "host_uuid not found"); *op_errstr = gf_strdup ("host_uuid not found"); goto out; } } ret = 0; out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_op_stage_sys_exec (dict_t *dict, char **op_errstr) { char errmsg[PATH_MAX] = ""; char *command = NULL; char command_path[PATH_MAX] = ""; struct stat st = {0,}; int ret = -1; glusterd_conf_t *conf = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); conf = this->private; GF_ASSERT (conf); if (conf->op_version < 2) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_UNSUPPORTED_VERSION, "Op Version not supported."); snprintf (errmsg, sizeof(errmsg), "One or more nodes do not" " support the required op version."); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } ret = dict_get_str (dict, "command", &command); if (ret) { strcpy (errmsg, "internal error"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get command from dict"); goto out; } /* enforce local occurrence of the command */ if (strchr (command, '/')) { strcpy (errmsg, "invalid command name"); ret = -1; goto out; } sprintf (command_path, GSYNCD_PREFIX"/peer_%s", command); /* check if it's executable */ ret = access (command_path, X_OK); if (!ret) /* check if it's a regular file */ ret = stat (command_path, &st); if (!ret && !S_ISREG (st.st_mode)) ret = -1; out: if (ret) { if (errmsg[0] == '\0') { if (command) snprintf (errmsg, sizeof (errmsg), "gsync peer_%s command not found.", command); else snprintf (errmsg, sizeof (errmsg), "%s", "gsync peer command was not " "specified"); } *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_PEER_CMD_ERROR, "%s", errmsg); } gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_op_stage_copy_file (dict_t *dict, char **op_errstr) { char abs_filename[PATH_MAX] = ""; char errmsg[PATH_MAX] = ""; char *filename = NULL; char *host_uuid = NULL; char uuid_str [64] = {0}; int ret = -1; glusterd_conf_t *priv = NULL; struct stat stbuf = {0,}; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); if (THIS) priv = THIS->private; if (priv == NULL) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GLUSTERD_PRIV_NOT_FOUND, "priv of glusterd not present"); *op_errstr = gf_strdup ("glusterd defunct"); goto out; } if (priv->op_version < 2) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_UNSUPPORTED_VERSION, "Op Version not supported."); snprintf (errmsg, sizeof(errmsg), "One or more nodes do not" " support the required op version."); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } ret = dict_get_str (dict, "host-uuid", &host_uuid); if (ret < 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch host-uuid from dict."); goto out; } uuid_utoa_r (MY_UUID, uuid_str); if (!strcmp (uuid_str, host_uuid)) { ret = dict_get_str (dict, "source", &filename); if (ret < 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch filename from dict."); *op_errstr = gf_strdup ("command unsuccessful"); goto out; } snprintf (abs_filename, sizeof(abs_filename), "%s/%s", priv->workdir, filename); ret = lstat (abs_filename, &stbuf); if (ret) { snprintf (errmsg, sizeof (errmsg), "Source file" " does not exist in %s", priv->workdir); *op_errstr = gf_strdup (errmsg); goto out; } if (!S_ISREG(stbuf.st_mode)) { snprintf (errmsg, sizeof (errmsg), "Source file" " is not a regular file."); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SRC_FILE_ERROR, "%s", errmsg); ret = -1; goto out; } } ret = 0; out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_get_statefile_name (glusterd_volinfo_t *volinfo, char *slave, char *conf_path, char **statefile, gf_boolean_t *is_template_in_use) { char *master = NULL; char *buf = NULL; char *working_conf_path = NULL; char temp_conf_path[PATH_MAX] = ""; dict_t *confd = NULL; glusterd_conf_t *priv = NULL; int ret = -1; struct stat stbuf = {0,}; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (this->private); GF_ASSERT (volinfo); GF_ASSERT (conf_path); GF_ASSERT (is_template_in_use); master = volinfo->volname; confd = dict_new (); if (!confd) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_CREATE_FAIL, "Unable to create new dict"); goto out; } priv = THIS->private; snprintf (temp_conf_path, sizeof(temp_conf_path) - 1, "%s/"GSYNC_CONF_TEMPLATE, priv->workdir); ret = lstat (conf_path, &stbuf); if (!ret) { gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_CONFIG_INFO, "Using passed config template(%s).", conf_path); working_conf_path = conf_path; } else { gf_msg (this->name, GF_LOG_WARNING, ENOENT, GD_MSG_FILE_OP_FAILED, "Config file (%s) missing. Looking for template config" " file (%s)", conf_path, temp_conf_path); ret = lstat (temp_conf_path, &stbuf); if (ret) { gf_msg (this->name, GF_LOG_ERROR, ENOENT, GD_MSG_FILE_OP_FAILED, "Template " "config file (%s) missing.", temp_conf_path); goto out; } gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_DEFAULT_TEMP_CONFIG, "Using default config template(%s).", temp_conf_path); working_conf_path = temp_conf_path; *is_template_in_use = _gf_true; } fetch_data: ret = glusterd_gsync_get_config (master, slave, working_conf_path, confd); if (ret) { if (*is_template_in_use == _gf_false) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GET_CONFIG_INFO_FAILED, "Unable to get configuration data " "for %s(master), %s(slave). " "Trying template config.", master, slave); working_conf_path = temp_conf_path; *is_template_in_use = _gf_true; goto fetch_data; } else { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GET_CONFIG_INFO_FAILED, "Unable to get configuration data " "for %s(master), %s(slave) from " "template config", master, slave); goto out; } } ret = dict_get_param (confd, "state_file", &buf); if (ret) { if (*is_template_in_use == _gf_false) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get state_file's name. " "Trying template config."); working_conf_path = temp_conf_path; *is_template_in_use = _gf_true; goto fetch_data; } else { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GET_STATEFILE_NAME_FAILED, "Unable to get state_file's " "name from template."); goto out; } } ret = 0; out: if (buf) { *statefile = gf_strdup(buf); if (!*statefile) ret = -1; } if (confd) dict_destroy (confd); gf_msg_debug (this->name, 0, "Returning %d ", ret); return ret; } int glusterd_create_status_file (char *master, char *slave, char *slave_host, char *slave_vol, char *status) { int ret = -1; runner_t runner = {0,}; glusterd_conf_t *priv = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); if (THIS) priv = THIS->private; if (priv == NULL) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GLUSTERD_PRIV_NOT_FOUND, "priv of glusterd not present"); goto out; } if (!status) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STATUS_NULL, "Status Empty"); goto out; } gf_msg_debug (this->name, 0, "slave = %s", slave); runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gsyncd", "--create", status, "-c", NULL); runner_argprintf (&runner, "%s/"GEOREP"/%s_%s_%s/gsyncd.conf", priv->workdir, master, slave_host, slave_vol); runner_argprintf (&runner, "--iprefix=%s", DATADIR); runner_argprintf (&runner, ":%s", master); runner_add_args (&runner, slave, NULL); synclock_unlock (&priv->big_lock); ret = runner_run (&runner); synclock_lock (&priv->big_lock); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STATUSFILE_CREATE_FAILED, "Creating status file failed."); ret = -1; goto out; } ret = 0; out: gf_msg_debug (this->name, 0, "returning %d", ret); return ret; } static int glusterd_verify_slave (char *volname, char *slave_url, char *slave_vol, int ssh_port, char **op_errstr, gf_boolean_t *is_force_blocker) { int32_t ret = -1; runner_t runner = {0,}; char log_file_path[PATH_MAX] = ""; char buf[PATH_MAX] = ""; char *tmp = NULL; char *slave_url_buf = NULL; char *save_ptr = NULL; char *slave_user = NULL; char *slave_ip = NULL; glusterd_conf_t *priv = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); priv = this->private; GF_ASSERT (priv); GF_ASSERT (volname); GF_ASSERT (slave_url); GF_ASSERT (slave_vol); /* Fetch the slave_user and slave_ip from the slave_url. * If the slave_user is not present. Use "root" */ if (strstr(slave_url, "@")) { slave_url_buf = gf_strdup (slave_url); if (!slave_url_buf) goto out; slave_user = strtok_r (slave_url_buf, "@", &save_ptr); slave_ip = strtok_r (NULL, "@", &save_ptr); } else { slave_user = "root"; slave_ip = slave_url; } if (!slave_user || !slave_ip) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_URL_INVALID, "Invalid slave url."); goto out; } snprintf (log_file_path, sizeof(log_file_path), DEFAULT_LOG_FILE_DIRECTORY"/create_verify_log"); runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gverify.sh", NULL); runner_argprintf (&runner, "%s", volname); runner_argprintf (&runner, "%s", slave_user); runner_argprintf (&runner, "%s", slave_ip); runner_argprintf (&runner, "%s", slave_vol); runner_argprintf (&runner, "%d", ssh_port); runner_argprintf (&runner, "%s", log_file_path); gf_msg_debug (this->name, 0, "gverify Args = %s %s %s %s %s %s %s", runner.argv[0], runner.argv[1], runner.argv[2], runner.argv[3], runner.argv[4], runner.argv[5], runner.argv[6]); runner_redir (&runner, STDOUT_FILENO, RUN_PIPE); synclock_unlock (&priv->big_lock); ret = runner_run (&runner); synclock_lock (&priv->big_lock); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_INVALID_SLAVE, "Not a valid slave"); ret = glusterd_gsync_read_frm_status (log_file_path, buf, sizeof(buf)); if (ret <= 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_READ_ERROR, "Unable to read from %s", log_file_path); goto out; } /* Tokenize the error message from gverify.sh to figure out * if the error is a force blocker or not. */ tmp = strtok_r (buf, "|", &save_ptr); if (!strcmp (tmp, "FORCE_BLOCKER")) *is_force_blocker = 1; else { /* No FORCE_BLOCKER flag present so all that is * present is the error message. */ *is_force_blocker = 0; if (tmp) *op_errstr = gf_strdup (tmp); ret = -1; goto out; } /* Copy rest of the error message to op_errstr */ tmp = strtok_r (NULL, "|", &save_ptr); if (tmp) *op_errstr = gf_strdup (tmp); ret = -1; goto out; } ret = 0; out: GF_FREE (slave_url_buf); unlink (log_file_path); gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } /** @slave_ip remains unmodified */ int glusterd_geo_rep_parse_slave (char *slave_url, char **hostname, char **op_errstr) { int ret = -1; char *tmp = NULL; char *save_ptr = NULL; char *host = NULL; char errmsg[PATH_MAX] = ""; char *saved_url = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (slave_url); GF_ASSERT (*slave_url); saved_url = gf_strdup (slave_url); if (!saved_url) goto out; /* Checking if hostname has user specified */ host = strstr (saved_url, "@"); if (!host) { /* no user specified */ if (hostname) { *hostname = gf_strdup (saved_url); if (!*hostname) goto out; } ret = 0; goto out; } else { /* Moving the host past the '@' and checking if the * actual hostname also has '@' */ host++; if (strstr (host, "@")) { gf_msg_debug (this->name, 0, "host = %s", host); ret = snprintf (errmsg, sizeof(errmsg) - 1, "Invalid Hostname (%s).", host); errmsg[ret] = '\0'; gf_msg (this->name, GF_LOG_ERROR, EINVAL, GD_MSG_INVALID_ENTRY, "%s", errmsg); ret = -1; if (op_errstr) *op_errstr = gf_strdup (errmsg); goto out; } ret = -1; /** * preliminary check for valid slave format. */ tmp = strtok_r (saved_url, "@", &save_ptr); tmp = strtok_r (NULL, "@", &save_ptr); if (!tmp) goto out; if (hostname) { *hostname = gf_strdup (tmp); if (!*hostname) goto out; } } ret = 0; out: GF_FREE (saved_url); if (ret) if (hostname) GF_FREE (*hostname); gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } /* Return -1 only if there is a match in volume uuid */ static int get_slavehost_from_voluuid (dict_t *dict, char *key, data_t *value, void *data) { char *slave_voluuid = NULL; char *slave_info = NULL; char *tmp = NULL; char tmp_char = 0; char *slave_host = NULL; xlator_t *this = NULL; struct slave_vol_config *slave_vol = NULL; int i = 0; int ret = -1; this = THIS; GF_VALIDATE_OR_GOTO ("glusterd", this, out); slave_vol = data; slave_info = value->data; gf_msg_debug (this->name, 0, "slave_info:%s !", slave_info); if (!(slave_info) || strlen (slave_info) == 0) { /* no slaves present, peace */ ret = 0; goto out; } /* slave format: * master_node_uuid:ssh://slave_host::slave_vol:slave_voluuid */ while (i++ < 5) { slave_info = strchr (slave_info, ':'); if (slave_info) slave_info++; } if (!(slave_info) || strlen(slave_info) == 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_VOL_PARSE_FAIL, "slave_info format is wrong!"); ret = -2; goto out; } else { if (strcmp (slave_info, slave_vol->slave_voluuid) == 0) { ret = -1; /* get corresponding slave host for reference*/ slave_host = value->data; slave_host = strstr (slave_host, "://"); if (slave_host) slave_host += 3; /* To go past username in non-root geo-rep session */ tmp = strchr (slave_host, '@'); if (tmp) slave_host = tmp + 1; tmp = strchr (slave_host, ':'); if (!tmp) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_VOL_PARSE_FAIL, "Invalid slave_host!"); ret = -2; goto out; } strncpy (slave_vol->old_slvhost, slave_host, (tmp - slave_host)); slave_vol->old_slvhost[(tmp - slave_host)+1] = '\0'; goto out; } } ret = 0; out: return ret; } /* Given slave host and slave volume, check whether slave volume uuid * already present. * If slave volume uuid is present, get corresponding slave host * for reference */ static int glusterd_get_slavehost_from_voluuid (glusterd_volinfo_t *volinfo, char *slave_host, char *slave_vol, struct slave_vol_config *slave1) { int ret = -1; xlator_t *this = NULL; this = THIS; GF_VALIDATE_OR_GOTO (this->name, volinfo, out); ret = dict_foreach (volinfo->gsync_slaves, get_slavehost_from_voluuid, slave1); out: return ret; } int glusterd_op_stage_gsync_create (dict_t *dict, char **op_errstr) { char *down_peerstr = NULL; char *slave = NULL; char *volname = NULL; char *host_uuid = NULL; char *statefile = NULL; char *slave_url = NULL; char *slave_host = NULL; char *slave_vol = NULL; char *conf_path = NULL; char errmsg[PATH_MAX] = ""; char common_pem_file[PATH_MAX] = ""; char hook_script[PATH_MAX] = ""; char uuid_str [64] = ""; int ret = -1; int is_pem_push = -1; int ssh_port = 22; gf_boolean_t is_force = -1; gf_boolean_t is_no_verify = -1; gf_boolean_t is_force_blocker = -1; gf_boolean_t exists = _gf_false; gf_boolean_t is_template_in_use = _gf_false; glusterd_conf_t *conf = NULL; glusterd_volinfo_t *volinfo = NULL; struct stat stbuf = {0,}; xlator_t *this = NULL; char *georep_session_wrkng_dir = NULL; struct slave_vol_config slave1 = {{0},}; int type = 0; char monitor_status[NAME_MAX] = {0,}; char old_slave_url_info[SLAVE_URL_INFO_MAX] = {0}; char *old_slave_url = NULL; char old_confpath[PATH_MAX] = {0}; gf_boolean_t is_running = _gf_false; int ret_status = 0; this = THIS; GF_ASSERT (this); conf = this->private; GF_ASSERT (conf); ret = glusterd_op_gsync_args_get (dict, op_errstr, &volname, &slave, &host_uuid); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_ARG_FETCH_ERROR, "Unable to fetch arguments"); gf_msg_debug (this->name, 0, "Returning %d", ret); return -1; } if (conf->op_version < 2) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_UNSUPPORTED_VERSION, "Op Version not supported."); snprintf (errmsg, sizeof(errmsg), "One or more nodes do not" " support the required op version."); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } exists = glusterd_check_volume_exists (volname); ret = glusterd_volinfo_find (volname, &volinfo); if ((ret) || (!exists)) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_VOL_NOT_FOUND, "volume name does not exist"); snprintf (errmsg, sizeof(errmsg), "Volume name %s does not" " exist", volname); *op_errstr = gf_strdup (errmsg); gf_msg_debug (this->name, 0, "Returning %d", ret); return -1; } ret = glusterd_get_slave_details_confpath (volinfo, dict, &slave_url, &slave_host, &slave_vol, &conf_path, op_errstr); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "Unable to fetch slave or confpath details."); ret = -1; goto out; } is_force = dict_get_str_boolean (dict, "force", _gf_false); uuid_utoa_r (MY_UUID, uuid_str); if (!strcmp (uuid_str, host_uuid)) { ret = glusterd_are_vol_all_peers_up (volinfo, &conf->peers, &down_peerstr); if ((ret == _gf_false) && !is_force) { snprintf (errmsg, sizeof (errmsg), "Peer %s," " which is a part of %s volume, is" " down. Please bring up the peer and" " retry.", down_peerstr, volinfo->volname); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_PEER_DISCONNECTED, "%s", errmsg); *op_errstr = gf_strdup (errmsg); GF_FREE (down_peerstr); down_peerstr = NULL; gf_msg_debug (this->name, 0, "Returning %d", ret); return -1; } else if (ret == _gf_false) { gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_PEER_DISCONNECTED, "Peer %s, which is a part of %s volume, is" " down. Force creating geo-rep session." " On bringing up the peer, re-run" " \"gluster system:: execute" " gsec_create\" and \"gluster volume" " geo-replication %s %s create push-pem" " force\"", down_peerstr, volinfo->volname, volinfo->volname, slave); GF_FREE (down_peerstr); down_peerstr = NULL; } ret = dict_get_int32 (dict, "ssh_port", &ssh_port); if (ret < 0 && ret != -ENOENT) { snprintf (errmsg, sizeof (errmsg), "Fetching ssh_port failed while " "handling "GEOREP" options"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); goto out; } is_no_verify = dict_get_str_boolean (dict, "no_verify", _gf_false); if (!is_no_verify) { /* Checking if slave host is pingable, has proper passwordless * ssh login setup, slave volume is created, slave vol is empty, * and if it has enough memory and bypass in case of force if * the error is not a force blocker */ ret = glusterd_verify_slave (volname, slave_url, slave_vol, ssh_port, op_errstr, &is_force_blocker); if (ret) { if (is_force && !is_force_blocker) { gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_INVALID_SLAVE, "%s is not a valid slave " "volume. Error: %s. Force " "creating geo-rep" " session.", slave, *op_errstr); } else { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_INVALID_SLAVE, "%s is not a valid slave " "volume. Error: %s", slave, *op_errstr); ret = -1; goto out; } } } ret = dict_get_int32 (dict, "push_pem", &is_pem_push); if (!ret && is_pem_push) { ret = snprintf (common_pem_file, sizeof(common_pem_file) - 1, "%s"GLUSTERD_COMMON_PEM_PUB_FILE, conf->workdir); common_pem_file[ret] = '\0'; ret = snprintf (hook_script, sizeof(hook_script) - 1, "%s"GLUSTERD_CREATE_HOOK_SCRIPT, conf->workdir); hook_script[ret] = '\0'; ret = lstat (common_pem_file, &stbuf); if (ret) { snprintf (errmsg, sizeof (errmsg), "%s" " required for push-pem is" " not present. Please run" " \"gluster system:: execute" " gsec_create\"", common_pem_file); gf_msg (this->name, GF_LOG_ERROR, ENOENT, GD_MSG_FILE_OP_FAILED, "%s", errmsg); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } ret = lstat (hook_script, &stbuf); if (ret) { snprintf (errmsg, sizeof (errmsg), "The hook-script (%s) required " "for push-pem is not present. " "Please install the hook-script " "and retry", hook_script); gf_msg (this->name, GF_LOG_ERROR, ENOENT, GD_MSG_FILE_OP_FAILED, "%s", errmsg); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } if (!S_ISREG(stbuf.st_mode)) { snprintf (errmsg, sizeof (errmsg), "%s" " required for push-pem is" " not a regular file. Please run" " \"gluster system:: execute" " gsec_create\"", common_pem_file); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_REG_FILE_MISSING, "%s", errmsg); ret = -1; goto out; } } } ret = glusterd_get_statefile_name (volinfo, slave, conf_path, &statefile, &is_template_in_use); if (ret) { if (!strstr(slave, "::")) snprintf (errmsg, sizeof (errmsg), "%s is not a valid slave url.", slave); else snprintf (errmsg, sizeof (errmsg), "Please check gsync " "config file. Unable to get statefile's name"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STATEFILE_NAME_NOT_FOUND, "%s", errmsg); ret = -1; goto out; } ret = dict_set_str (dict, "statefile", statefile); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to store statefile path"); goto out; } ret = lstat (statefile, &stbuf); if (!ret && !is_force) { snprintf (errmsg, sizeof (errmsg), "Session between %s" " and %s is already created.", volinfo->volname, slave); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SESSION_ALREADY_EXIST, "%s", errmsg); ret = -1; goto out; } else if (!ret) gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_FORCE_CREATE_SESSION, "Session between %s and %s is already created. Force" " creating again.", volinfo->volname, slave); ret = glusterd_get_slave_voluuid (slave_host, slave_vol, slave1.slave_voluuid); if ((ret) || (strlen(slave1.slave_voluuid) == 0)) { snprintf (errmsg, sizeof (errmsg), "Unable to get remote volume uuid."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_REMOTE_VOL_UUID_FAIL, "%s", errmsg); ret = -1; goto out; } ret = dict_set_dynstr_with_alloc (dict, "slave_voluuid", slave1.slave_voluuid); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to set slave volume uuid in the dict"); goto out; } /* Check whether session is already created using slave volume uuid */ ret = glusterd_get_slavehost_from_voluuid (volinfo, slave_host, slave_vol, &slave1); if (ret == -1) { if (!is_force) { snprintf (errmsg, sizeof (errmsg), "Session between %s" " and %s:%s is already created! Cannot create " "with new slave:%s again!", volinfo->volname, slave1.old_slvhost, slave_vol, slave_host); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_FORCE_CREATE_SESSION, "Session between" " %s and %s:%s is already created! " "Cannot create with new slave:%s again!", volinfo->volname, slave1.old_slvhost, slave_vol, slave_host); goto out; } /* Now, check whether session is already started, if so, warn!*/ ret = snprintf (old_confpath, sizeof(old_confpath) - 1, "%s/"GEOREP"/%s_%s_%s/gsyncd.conf", conf->workdir, volinfo->volname, slave1.old_slvhost, slave_vol); /* construct old slave url with (old) slave host */ old_slave_url = old_slave_url_info; strncpy (old_slave_url, slave1.old_slvhost, sizeof(old_slave_url_info)); old_slave_url = strcat (old_slave_url, "::"); old_slave_url = strncat (old_slave_url, slave_vol, sizeof(old_slave_url_info)); ret = glusterd_check_gsync_running_local (volinfo->volname, old_slave_url, old_confpath, &is_running); if (_gf_true == is_running) { snprintf (errmsg, sizeof(errmsg), "Geo" " -replication session between %s and %s" " is still active. Please stop the " "session and retry.", volinfo->volname, old_slave_url); ret = -1; goto out; } ret = dict_set_dynstr_with_alloc (dict, "old_slavehost", slave1.old_slvhost); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to set old_slavehost in the dict"); goto out; } ret = dict_set_int32 (dict, "existing_session", _gf_true); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to set existing_session in the dict"); goto out; } } else if (ret == -2) { snprintf (errmsg, sizeof (errmsg), "get_slavehost_from_voluuid" " failed %s %s!!", slave_host, slave_vol); gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_FORCE_CREATE_SESSION, "get_slavehost_from_voluuid failed %s %s!!", slave_host, slave_vol); goto out; } ret = glusterd_verify_gsyncd_spawn (volinfo->volname, slave); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to spawn gsyncd."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GSYNCD_SPAWN_FAILED, "%s", errmsg); goto out; } ret = 0; out: if (ret && errmsg[0] != '\0') *op_errstr = gf_strdup (errmsg); gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } /* pre-condition check for geo-rep pause/resume. * Return: 0 on success * -1 on any check failed. */ static int gd_pause_resume_validation (int type, glusterd_volinfo_t *volinfo, char *slave, char *statefile, char **op_errstr) { int ret = 0; char errmsg[PATH_MAX] = {0,}; char monitor_status[NAME_MAX] = {0,}; GF_ASSERT (volinfo); GF_ASSERT (slave); GF_ASSERT (statefile); GF_ASSERT (op_errstr); ret = glusterd_gsync_read_frm_status (statefile, monitor_status, sizeof (monitor_status)); if (ret <= 0) { snprintf (errmsg, sizeof(errmsg), "Pause check Failed:" " Geo-rep session is not setup"); ret = -1; goto out; } if ( type == GF_GSYNC_OPTION_TYPE_PAUSE && strstr (monitor_status, "Paused")) { snprintf (errmsg, sizeof(errmsg), "Geo-replication" " session between %s and %s already Paused.", volinfo->volname, slave); ret = -1; goto out; } if ( type == GF_GSYNC_OPTION_TYPE_RESUME && !strstr (monitor_status, "Paused")) { snprintf (errmsg, sizeof(errmsg), "Geo-replication" " session between %s and %s is not Paused.", volinfo->volname, slave); ret = -1; goto out; } ret = 0; out: if (ret && (errmsg[0] != '\0')) { *op_errstr = gf_strdup (errmsg); } return ret; } int glusterd_op_stage_gsync_set (dict_t *dict, char **op_errstr) { int ret = 0; int type = 0; int pfd = -1; char *volname = NULL; char *slave = NULL; char *slave_url = NULL; char *slave_host = NULL; char *slave_vol = NULL; char *down_peerstr = NULL; char *statefile = NULL; char *path_list = NULL; char *conf_path = NULL; gf_boolean_t exists = _gf_false; glusterd_volinfo_t *volinfo = NULL; char errmsg[PATH_MAX] = {0,}; char pidfile[PATH_MAX] = {0,}; dict_t *ctx = NULL; gf_boolean_t is_force = 0; gf_boolean_t is_running = _gf_false; gf_boolean_t is_template_in_use = _gf_false; uuid_t uuid = {0}; char uuid_str [64] = {0}; char *host_uuid = NULL; xlator_t *this = NULL; glusterd_conf_t *conf = NULL; struct stat stbuf = {0,}; this = THIS; GF_ASSERT (this); conf = this->private; GF_ASSERT (conf); ret = dict_get_int32 (dict, "type", &type); if (ret < 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, "command type not found"); *op_errstr = gf_strdup ("command unsuccessful"); goto out; } if (type == GF_GSYNC_OPTION_TYPE_STATUS) { ret = glusterd_verify_gsync_status_opts (dict, op_errstr); goto out; } ret = glusterd_op_gsync_args_get (dict, op_errstr, &volname, &slave, &host_uuid); if (ret) goto out; uuid_utoa_r (MY_UUID, uuid_str); if (conf->op_version < 2) { snprintf (errmsg, sizeof(errmsg), "One or more nodes do not" " support the required op version."); ret = -1; goto out; } exists = glusterd_check_volume_exists (volname); ret = glusterd_volinfo_find (volname, &volinfo); if ((ret) || (!exists)) { snprintf (errmsg, sizeof(errmsg), "Volume name %s does not" " exist", volname); ret = -1; goto out; } ret = glusterd_get_slave_details_confpath (volinfo, dict, &slave_url, &slave_host, &slave_vol, &conf_path, op_errstr); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "Unable to fetch slave or confpath details."); ret = -1; goto out; } is_force = dict_get_str_boolean (dict, "force", _gf_false); ret = glusterd_get_statefile_name (volinfo, slave, conf_path, &statefile, &is_template_in_use); if (ret) { if (!strstr(slave, "::")) { snprintf (errmsg, sizeof(errmsg), "%s is not a valid slave url.", slave); ret = -1; goto out; } else { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_URL_INVALID, "state_file entry missing in config file (%s)", conf_path); if ((type == GF_GSYNC_OPTION_TYPE_STOP) && is_force) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_STOP_FORCE, "Allowing stop " "force to bypass missing statefile " "entry in config file (%s), and " "template file", conf_path); ret = 0; } else goto out; } } else { ret = dict_set_str (dict, "statefile", statefile); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to store statefile path"); goto out; } } /* Allowing stop force to bypass the statefile check * as this command acts as a fail safe method to stop geo-rep * session. */ if (!((type == GF_GSYNC_OPTION_TYPE_STOP) && is_force)) { ret = lstat (statefile, &stbuf); if (ret) { snprintf (errmsg, sizeof(errmsg), "Geo-replication" " session between %s and %s does not exist.", volinfo->volname, slave); gf_msg (this->name, GF_LOG_ERROR, ENOENT, GD_MSG_FILE_OP_FAILED, "%s. statefile = %s", errmsg, statefile); ret = -1; goto out; } } /* Check if all peers that are a part of the volume are up or not */ if ((type == GF_GSYNC_OPTION_TYPE_DELETE) || ((type == GF_GSYNC_OPTION_TYPE_STOP) && !is_force) || (type == GF_GSYNC_OPTION_TYPE_PAUSE) || (type == GF_GSYNC_OPTION_TYPE_RESUME)) { if (!strcmp (uuid_str, host_uuid)) { ret = glusterd_are_vol_all_peers_up (volinfo, &conf->peers, &down_peerstr); if (ret == _gf_false) { snprintf (errmsg, sizeof (errmsg), "Peer %s," " which is a part of %s volume, is" " down. Please bring up the peer and" " retry.", down_peerstr, volinfo->volname); ret = -1; GF_FREE (down_peerstr); down_peerstr = NULL; goto out; } } } switch (type) { case GF_GSYNC_OPTION_TYPE_START: if (is_template_in_use) { snprintf (errmsg, sizeof(errmsg), "state-file entry " "missing in the config file(%s).", conf_path); ret = -1; goto out; } ret = glusterd_op_verify_gsync_start_options (volinfo, slave, conf_path, statefile, op_errstr, is_force); if (ret) goto out; ctx = glusterd_op_get_ctx(); if (ctx) { /* gsyncd does a fuse mount to start * the geo-rep session */ if (!glusterd_is_fuse_available ()) { gf_msg ("glusterd", GF_LOG_ERROR, errno, GD_MSG_GEO_REP_START_FAILED, "Unable " "to open /dev/fuse (%s), " "geo-replication start failed", strerror (errno)); snprintf (errmsg, sizeof(errmsg), "fuse unvailable"); ret = -1; goto out; } } break; case GF_GSYNC_OPTION_TYPE_STOP: if (!is_force) { if (is_template_in_use) { snprintf (errmsg, sizeof(errmsg), "state-file entry missing in " "the config file(%s).", conf_path); ret = -1; goto out; } ret = glusterd_op_verify_gsync_running (volinfo, slave, conf_path, op_errstr); if (ret) { ret = glusterd_get_local_brickpaths (volinfo, &path_list); if (path_list) ret = -1; } } break; case GF_GSYNC_OPTION_TYPE_PAUSE: case GF_GSYNC_OPTION_TYPE_RESUME: if (is_template_in_use) { snprintf (errmsg, sizeof(errmsg), "state-file entry missing in " "the config file(%s).", conf_path); ret = -1; goto out; } ret = glusterd_op_verify_gsync_running (volinfo, slave, conf_path, op_errstr); if (ret) { ret = glusterd_get_local_brickpaths (volinfo, &path_list); if (path_list) { ret = -1; goto out; } } if (!is_force) { ret = gd_pause_resume_validation (type, volinfo, slave, statefile, op_errstr); if (ret) { ret = glusterd_get_local_brickpaths (volinfo, &path_list); if (path_list) { ret = -1; goto out; } } } break; case GF_GSYNC_OPTION_TYPE_CONFIG: if (is_template_in_use) { snprintf (errmsg, sizeof(errmsg), "state-file entry " "missing in the config file(%s).", conf_path); ret = -1; goto out; } pfd = gsyncd_getpidfile (volname, slave, pidfile, conf_path, &is_template_in_use); if (is_template_in_use) { snprintf (errmsg, sizeof(errmsg), "pid-file entry " "missing in the config file(%s).", conf_path); ret = -1; goto out; } ret = gsync_verify_config_options (dict, op_errstr, volname); goto out; break; case GF_GSYNC_OPTION_TYPE_DELETE: /* Check if the gsync session is still running * If so ask the user to stop geo-replication first.*/ if (is_template_in_use) { snprintf (errmsg, sizeof(errmsg), "state-file entry " "missing in the config file(%s).", conf_path); ret = -1; goto out; } ret = glusterd_gsync_get_uuid (slave, volinfo, uuid); if (ret) { snprintf (errmsg, sizeof(errmsg), "Geo-replication" " session between %s and %s does not exist.", volinfo->volname, slave); ret = -1; goto out; } else { ret = glusterd_check_gsync_running_local (volinfo->volname, slave, conf_path, &is_running); if (_gf_true == is_running) { snprintf (errmsg, sizeof (errmsg), GEOREP " session between %s & %s is " "still active. Please stop the " "session and retry.", volinfo->volname, slave); ret = -1; goto out; } } ret = glusterd_verify_gsyncd_spawn (volinfo->volname, slave); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to spawn gsyncd"); } break; } out: if (path_list) GF_FREE (path_list); if (ret && errmsg[0] != '\0') { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GSYNCD_ERROR, "%s", errmsg); *op_errstr = gf_strdup (errmsg); } gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } static int gd_pause_or_resume_gsync (dict_t *dict, char *master, char *slave, char *slave_host, char *slave_vol, char *conf_path, char **op_errstr, gf_boolean_t is_pause) { int32_t ret = 0; int pfd = -1; pid_t pid = 0; char pidfile[PATH_MAX] = {0,}; char errmsg[PATH_MAX] = ""; char buf [1024] = {0,}; int i = 0; gf_boolean_t is_template_in_use = _gf_false; char monitor_status[NAME_MAX] = {0,}; char *statefile = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (dict); GF_ASSERT (master); GF_ASSERT (slave); GF_ASSERT (slave_host); GF_ASSERT (slave_vol); GF_ASSERT (conf_path); pfd = gsyncd_getpidfile (master, slave, pidfile, conf_path, &is_template_in_use); if (pfd == -2) { snprintf (errmsg, sizeof(errmsg), "pid-file entry mising in config file and " "template config file."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_PIDFILE_NOT_FOUND, "%s", errmsg); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } if (gsync_status_byfd (pfd) == -1) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GSYNCD_ERROR, "gsyncd b/w %s & %s is not running", master, slave); /* monitor gsyncd already dead */ goto out; } if (pfd < 0) goto out; /* Prepare to update status file*/ ret = dict_get_str (dict, "statefile", &statefile); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Pause/Resume Failed: Unable to fetch statefile path"); goto out; } ret = glusterd_gsync_read_frm_status (statefile, monitor_status, sizeof (monitor_status)); if (ret <= 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STAT_FILE_READ_FAILED, "Pause/Resume Failed: " "Unable to read status file for %s(master)" " %s(slave)", master, slave); goto out; } ret = read (pfd, buf, 1024); if (ret > 0) { pid = strtol (buf, NULL, 10); if (is_pause) { ret = kill (-pid, SIGSTOP); if (ret) { gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_PID_KILL_FAIL, "Failed" " to pause gsyncd. Error: %s", strerror (errno)); goto out; } /*On pause force, if status is already paused do not update status again*/ if (strstr (monitor_status, "Paused")) goto out; ret = glusterd_create_status_file ( master, slave, slave_host, slave_vol, "Paused"); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_UPDATE_STATEFILE_FAILED, "Unable to update state_file." " Error : %s", strerror (errno)); /* If status cannot be updated resume back */ if (kill (-pid, SIGCONT)) { snprintf (errmsg, sizeof(errmsg), "Pause successful but could " "not update status file. " "Please use 'resume force' to" " resume back and retry pause" " to reflect in status"); gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_PID_KILL_FAIL, "Resume back Failed. Error:" "%s", strerror (errno)); *op_errstr = gf_strdup (errmsg); } goto out; } } else { ret = glusterd_create_status_file (master, slave, slave_host, slave_vol, "Started"); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_UPDATE_STATEFILE_FAILED, "Resume Failed: Unable to update " "state_file. Error : %s", strerror (errno)); goto out; } ret = kill (-pid, SIGCONT); if (ret) { gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_PID_KILL_FAIL, "Resumed Failed: Unable to send" " SIGCONT. Error: %s", strerror (errno)); /* Process can't be resumed, update status * back to paused. */ ret = glusterd_create_status_file (master, slave, slave_host, slave_vol, monitor_status); if (ret) { snprintf (errmsg, sizeof(errmsg), "Resume failed!!! Status " "inconsistent. Please use " "'resume force' to resume and" " reach consistent state"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STATUS_UPDATE_FAILED, "Updating status back to paused" " Failed. Error: %s", strerror (errno)); *op_errstr = gf_strdup (errmsg); } goto out; } } } ret = 0; out: sys_close (pfd); return ret; } static int stop_gsync (char *master, char *slave, char **msg, char *conf_path, char **op_errstr, gf_boolean_t is_force) { int32_t ret = 0; int pfd = -1; pid_t pid = 0; char pidfile[PATH_MAX] = {0,}; char errmsg[PATH_MAX] = ""; char buf[1024] = {0,}; int i = 0; gf_boolean_t is_template_in_use = _gf_false; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (this->private); pfd = gsyncd_getpidfile (master, slave, pidfile, conf_path, &is_template_in_use); if (pfd == -2) { snprintf (errmsg, sizeof(errmsg) - 1, "pid-file entry mising in config file and " "template config file."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_PIDFILE_NOT_FOUND, "%s", errmsg); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } if (gsync_status_byfd (pfd) == -1 && !is_force) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GSYNCD_ERROR, "gsyncd b/w %s & %s is not running", master, slave); /* monitor gsyncd already dead */ goto out; } if (pfd < 0) goto out; ret = read (pfd, buf, 1024); if (ret > 0) { pid = strtol (buf, NULL, 10); ret = kill (-pid, SIGTERM); if (ret && !is_force) { gf_msg (this->name, GF_LOG_WARNING, errno, GD_MSG_PID_KILL_FAIL, "failed to kill gsyncd"); goto out; } for (i = 0; i < 20; i++) { if (gsync_status_byfd (pfd) == -1) { /* monitor gsyncd is dead but worker may * still be alive, give some more time * before SIGKILL (hack) */ usleep (50000); break; } usleep (50000); } kill (-pid, SIGKILL); unlink (pidfile); } ret = 0; out: sys_close (pfd); return ret; } /* * glusterd_gsync_op_already_set: * This funcion checks whether the op_value is same as in the * gsyncd.conf file. * * RETURN VALUE: * 0 : op_value matches the conf file. * 1 : op_value does not matches the conf file or op_param not * found in conf file. * -1 : error */ int glusterd_gsync_op_already_set (char* master, char* slave, char* conf_path, char* op_name, char* op_value) { dict_t *confd = NULL; char *op_val_buf = NULL; int32_t op_val_conf = 0; int32_t op_val_cli = 0; int32_t ret = -1; gf_boolean_t is_bool = _gf_true; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); confd = dict_new (); if (!confd) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_CREATE_FAIL, "Not able to create dict."); return -1; } ret = glusterd_gsync_get_config (master, slave, conf_path, confd); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GET_CONFIG_INFO_FAILED, "Unable to get configuration data for %s(master), " "%s(slave)", master, slave); goto out; } ret = dict_get_param (confd, op_name, &op_val_buf); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get op_value for %s(master), %s(slave). " "Please check gsync config file.", master, slave); ret = 1; goto out; } gf_msg_debug (this->name, 0, "val_cli:%s val_conf:%s", op_value, op_val_buf); if (!strcmp(op_val_buf,"true") || !strcmp(op_val_buf,"1") || !strcmp(op_val_buf,"yes")) { op_val_conf = 1; } else if(!strcmp(op_val_buf,"false") || !strcmp(op_val_buf,"0") || !strcmp(op_val_buf,"no")) { op_val_conf = 0; } else { is_bool = _gf_false; } if (is_bool) { if (!strcmp(op_value,"true") || !strcmp(op_value,"1") || !strcmp(op_value,"yes")) { op_val_cli = 1; } else { op_val_cli = 0; } if ( op_val_cli == op_val_conf ) { ret = 0; goto out; } } else { if (!strcmp(op_val_buf,op_value)) { ret = 0; goto out; } } ret = 1; out: dict_unref(confd); return ret; } static int glusterd_gsync_configure (glusterd_volinfo_t *volinfo, char *slave, char *path_list, dict_t *dict, dict_t *resp_dict, char **op_errstr) { int32_t ret = -1; char *op_name = NULL; char *op_value = NULL; runner_t runner = {0,}; glusterd_conf_t *priv = NULL; char *subop = NULL; char *master = NULL; char *conf_path = NULL; char *slave_host = NULL; char *slave_vol = NULL; struct stat stbuf = {0, }; gf_boolean_t restart_required = _gf_true; char **resopt = NULL; gf_boolean_t op_already_set = _gf_false; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (slave); GF_ASSERT (op_errstr); GF_ASSERT (dict); GF_ASSERT (resp_dict); ret = dict_get_str (dict, "subop", &subop); if (ret != 0) goto out; if (strcmp (subop, "get") == 0 || strcmp (subop, "get-all") == 0) { /* deferred to cli */ gf_msg_debug (this->name, 0, "Returning 0"); return 0; } ret = dict_get_str (dict, "op_name", &op_name); if (ret != 0) goto out; if (strtail (subop, "set")) { ret = dict_get_str (dict, "op_value", &op_value); if (ret != 0) goto out; } if (THIS) priv = THIS->private; if (priv == NULL) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GLUSTERD_PRIV_NOT_FOUND, "priv of glusterd not present"); *op_errstr = gf_strdup ("glusterd defunct"); goto out; } ret = dict_get_str (dict, "conf_path", &conf_path); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch conf file path."); goto out; } master = ""; runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gsyncd", "-c", NULL); runner_argprintf (&runner, "%s", conf_path); runner_argprintf (&runner, "--iprefix=%s", DATADIR); if (volinfo) { master = volinfo->volname; runner_argprintf (&runner, ":%s", master); } runner_add_arg (&runner, slave); runner_argprintf (&runner, "--config-%s", subop); runner_add_arg (&runner, op_name); if (op_value) runner_add_arg (&runner, op_value); if ( strcmp(op_name,"checkpoint") != 0 && strtail (subop, "set")) { ret = glusterd_gsync_op_already_set(master,slave,conf_path, op_name,op_value); if (ret == -1) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_GSYNCD_OP_SET_FAILED, "glusterd_gsync_op_already_set failed."); gf_asprintf (op_errstr, GEOREP" config-%s failed for " "%s %s", subop, master, slave); goto out; } if (ret == 0) { gf_msg_debug (this->name, 0, "op_value is already set"); op_already_set = _gf_true; goto out; } } synclock_unlock (&priv->big_lock); ret = runner_run (&runner); synclock_lock (&priv->big_lock); if (ret) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_GSYNCD_ERROR, "gsyncd failed to %s %s option for " "%s %s peers", subop, op_name, master, slave); gf_asprintf (op_errstr, GEOREP" config-%s failed for %s %s", subop, master, slave); goto out; } if ((!strcmp (op_name, "state_file")) && (op_value)) { ret = lstat (op_value, &stbuf); if (ret) { ret = dict_get_str (dict, "slave_host", &slave_host); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch slave host."); goto out; } ret = dict_get_str (dict, "slave_vol", &slave_vol); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch slave volume name."); goto out; } ret = glusterd_create_status_file (volinfo->volname, slave, slave_host, slave_vol, "Switching Status " "File"); if (ret || lstat (op_value, &stbuf)) { gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_FILE_OP_FAILED, "Unable to " "create %s. Error : %s", op_value, strerror (errno)); ret = -1; goto out; } } } ret = 0; gf_asprintf (op_errstr, "config-%s successful", subop); out: if (!ret && volinfo && !op_already_set) { for (resopt = gsync_no_restart_opts; *resopt; resopt++) { restart_required = _gf_true; if (!strcmp ((*resopt), op_name)){ restart_required = _gf_false; break; } } if (restart_required) { ret = glusterd_check_restart_gsync_session (volinfo, slave, resp_dict, path_list, conf_path, 0); if (ret) *op_errstr = gf_strdup ("internal error"); } } gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_gsync_read_frm_status (char *path, char *buf, size_t blen) { int ret = 0; int status_fd = -1; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (path); GF_ASSERT (buf); status_fd = open (path, O_RDONLY); if (status_fd == -1) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_FILE_OP_FAILED, "Unable to read gsyncd status file"); return -1; } ret = read (status_fd, buf, blen - 1); if (ret > 0) { size_t len = strnlen (buf, ret); /* Ensure there is a NUL byte and that it's not the first. */ if (len == 0 || len == blen - 1) { ret = -1; } else { char *p = buf + len - 1; while (isspace (*p)) *p-- = '\0'; } } else if (ret < 0) gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GSYNCD_ERROR, "Status file of gsyncd is corrupt"); close (status_fd); return ret; } static int dict_get_param (dict_t *dict, char *key, char **param) { char *dk = NULL; char *s = NULL; char x = '\0'; int ret = 0; if (dict_get_str (dict, key, param) == 0) return 0; dk = gf_strdup (key); if (!key) return -1; s = strpbrk (dk, "-_"); if (!s) { ret = -1; goto out; } x = (*s == '-') ? '_' : '-'; *s++ = x; while ((s = strpbrk (s, "-_"))) *s++ = x; ret = dict_get_str (dict, dk, param); out: GF_FREE (dk); return ret; } int glusterd_fetch_values_from_config (char *master, char *slave, char *confpath, dict_t *confd, char **statefile, char **georep_session_wrkng_dir, char **socketfile) { int ret = 0; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); ret = glusterd_gsync_get_config (master, slave, confpath, confd); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GET_CONFIG_INFO_FAILED, "Unable to get configuration data for %s(master), " "%s(slave)", master, slave); goto out; } if (statefile) { ret = dict_get_param (confd, "state_file", statefile); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get state_file's name " "for %s(master), %s(slave). " "Please check gsync config file.", master, slave); goto out; } } if (georep_session_wrkng_dir) { ret = dict_get_param (confd, "georep_session_working_dir", georep_session_wrkng_dir); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get geo-rep session's " "working directory name for %s(master), " "%s(slave). Please check gsync config file.", master, slave); goto out; } } if (socketfile) { ret = dict_get_param (confd, "state_socket_unencoded", socketfile); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get socket file's name " "for %s(master), %s(slave). " "Please check gsync config file.", master, slave); goto out; } } ret = 0; out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_read_status_file (glusterd_volinfo_t *volinfo, char *slave, char *conf_path, dict_t *dict, char *node) { char brick_state_file[PATH_MAX] = ""; char brick_path[PATH_MAX] = ""; char temp_conf_path[PATH_MAX] = ""; char *working_conf_path = NULL; char *georep_session_wrkng_dir = NULL; char *master = NULL; char tmp[1024] = ""; char sts_val_name[1024] = ""; char monitor_status[NAME_MAX] = ""; char *statefile = NULL; char *socketfile = NULL; dict_t *confd = NULL; char *slavekey = NULL; char *slaveentry = NULL; char *slaveuser = NULL; char *saveptr = NULL; char *temp = NULL; char *temp_inp = NULL; char *brick_host_uuid = NULL; int brick_host_uuid_length = 0; int gsync_count = 0; int i = 0; int ret = 0; glusterd_brickinfo_t *brickinfo = NULL; gf_gsync_status_t *sts_val = NULL; gf_boolean_t is_template_in_use = _gf_false; glusterd_conf_t *priv = NULL; struct stat stbuf = {0,}; dict_t *statusd = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (this->private); GF_ASSERT (volinfo); GF_ASSERT (conf_path); master = volinfo->volname; confd = dict_new (); if (!confd) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_CREATE_FAIL, "Not able to create dict."); return -1; } priv = THIS->private; snprintf (temp_conf_path, sizeof(temp_conf_path) - 1, "%s/"GSYNC_CONF_TEMPLATE, priv->workdir); ret = lstat (conf_path, &stbuf); if (!ret) { gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_CONFIG_INFO, "Using passed config template(%s).", conf_path); working_conf_path = conf_path; } else { gf_msg (this->name, GF_LOG_WARNING, ENOENT, GD_MSG_FILE_OP_FAILED, "Config file (%s) missing. Looking for template " "config file (%s)", conf_path, temp_conf_path); ret = lstat (temp_conf_path, &stbuf); if (ret) { gf_msg (this->name, GF_LOG_ERROR, ENOENT, GD_MSG_FILE_OP_FAILED, "Template " "config file (%s) missing.", temp_conf_path); goto out; } gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_DEFAULT_TEMP_CONFIG, "Using default config template(%s).", temp_conf_path); working_conf_path = temp_conf_path; is_template_in_use = _gf_true; } fetch_data: ret = glusterd_fetch_values_from_config (master, slave, working_conf_path, confd, &statefile, &georep_session_wrkng_dir, &socketfile); if (ret) { if (is_template_in_use == _gf_false) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_FETCH_CONFIG_VAL_FAILED, "Unable to fetch config values " "for %s(master), %s(slave). " "Trying default config template", master, slave); working_conf_path = temp_conf_path; is_template_in_use = _gf_true; goto fetch_data; } else { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_FETCH_CONFIG_VAL_FAILED, "Unable to " "fetch config values for %s(master), " "%s(slave)", master, slave); goto out; } } ret = glusterd_gsync_read_frm_status (statefile, monitor_status, sizeof (monitor_status)); if (ret <= 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STAT_FILE_READ_FAILED, "Unable to read the status file for %s(master), " "%s(slave) statefile: %s", master, slave, statefile); strncpy (monitor_status, "defunct", sizeof (monitor_status)); } ret = dict_get_int32 (dict, "gsync-count", &gsync_count); if (ret) gsync_count = 0; cds_list_for_each_entry (brickinfo, &volinfo->bricks, brick_list) { if (gf_uuid_compare (brickinfo->uuid, MY_UUID)) continue; sts_val = GF_CALLOC (1, sizeof(gf_gsync_status_t), gf_common_mt_gsync_status_t); if (!sts_val) { gf_msg (this->name, GF_LOG_ERROR, ENOMEM, GD_MSG_NO_MEMORY, "Out Of Memory"); goto out; } /* Slave Key */ ret = glusterd_get_slave (volinfo, slave, &slavekey); if (ret < 0) { GF_FREE (sts_val); goto out; } memcpy (sts_val->slavekey, slavekey, strlen(slavekey)); sts_val->slavekey[strlen(slavekey)] = '\0'; /* Master Volume */ memcpy (sts_val->master, master, strlen(master)); sts_val->master[strlen(master)] = '\0'; /* Master Brick Node */ memcpy (sts_val->node, brickinfo->hostname, strlen(brickinfo->hostname)); sts_val->node[strlen(brickinfo->hostname)] = '\0'; /* Master Brick Path */ memcpy (sts_val->brick, brickinfo->path, strlen(brickinfo->path)); sts_val->brick[strlen(brickinfo->path)] = '\0'; /* Brick Host UUID */ brick_host_uuid = uuid_utoa(brickinfo->uuid); brick_host_uuid_length = strlen (brick_host_uuid); memcpy (sts_val->brick_host_uuid, brick_host_uuid, brick_host_uuid_length); sts_val->brick_host_uuid[brick_host_uuid_length] = '\0'; /* Slave */ memcpy (sts_val->slave, slave, strlen(slave)); sts_val->slave[strlen(slave)] = '\0'; snprintf (sts_val->slave_node, sizeof(sts_val->slave_node), "N/A"); snprintf (sts_val->worker_status, sizeof(sts_val->worker_status), "N/A"); snprintf (sts_val->crawl_status, sizeof(sts_val->crawl_status), "N/A"); snprintf (sts_val->last_synced, sizeof(sts_val->last_synced), "N/A"); snprintf (sts_val->last_synced_utc, sizeof(sts_val->last_synced_utc), "N/A"); snprintf (sts_val->entry, sizeof(sts_val->entry), "N/A"); snprintf (sts_val->data, sizeof(sts_val->data), "N/A"); snprintf (sts_val->meta, sizeof(sts_val->meta), "N/A"); snprintf (sts_val->failures, sizeof(sts_val->failures), "N/A"); snprintf (sts_val->checkpoint_time, sizeof(sts_val->checkpoint_time), "N/A"); snprintf (sts_val->checkpoint_time_utc, sizeof(sts_val->checkpoint_time_utc), "N/A"); snprintf (sts_val->checkpoint_completed, sizeof(sts_val->checkpoint_completed), "N/A"); snprintf (sts_val->checkpoint_completion_time, sizeof(sts_val->checkpoint_completion_time), "N/A"); snprintf (sts_val->checkpoint_completion_time_utc, sizeof(sts_val->checkpoint_completion_time_utc), "N/A"); /* Get all the other values from Gsyncd */ ret = glusterd_gsync_get_status (master, slave, conf_path, brickinfo->path, sts_val); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GET_STATUS_DATA_FAIL, "Unable to get status data " "for %s(master), %s(slave), %s(brick)", master, slave, brickinfo->path); ret = -1; goto out; } if (is_template_in_use) { snprintf (sts_val->worker_status, sizeof(sts_val->worker_status), "Config Corrupted"); } ret = dict_get_str (volinfo->gsync_slaves, slavekey, &slaveentry); if (ret < 0) { GF_FREE (sts_val); goto out; } memcpy (sts_val->session_slave, slaveentry, strlen(slaveentry)); sts_val->session_slave[strlen(slaveentry)] = '\0'; temp_inp = gf_strdup(slaveentry); if (!temp_inp) goto out; if (strstr(temp_inp, "@") == NULL) { slaveuser = "root"; } else { temp = strtok_r(temp_inp, "//", &saveptr); temp = strtok_r(NULL, "/", &saveptr); slaveuser = strtok_r(temp, "@", &saveptr); } memcpy (sts_val->slave_user, slaveuser, strlen(slaveuser)); sts_val->slave_user[strlen(slaveuser)] = '\0'; snprintf (sts_val_name, sizeof (sts_val_name), "status_value%d", gsync_count); ret = dict_set_bin (dict, sts_val_name, sts_val, sizeof(gf_gsync_status_t)); if (ret) { GF_FREE (sts_val); goto out; } gsync_count++; sts_val = NULL; } ret = dict_set_int32 (dict, "gsync-count", gsync_count); if (ret) goto out; out: GF_FREE (temp_inp); dict_unref (confd); return 0; } int glusterd_check_restart_gsync_session (glusterd_volinfo_t *volinfo, char *slave, dict_t *resp_dict, char *path_list, char *conf_path, gf_boolean_t is_force) { int ret = 0; glusterd_conf_t *priv = NULL; char *status_msg = NULL; gf_boolean_t is_running = _gf_false; char *op_errstr = NULL; char *key = NULL; xlator_t *this = NULL; GF_ASSERT (volinfo); GF_ASSERT (slave); this = THIS; GF_ASSERT (this); priv = this->private; GF_ASSERT (priv); key = slave; ret = glusterd_check_gsync_running_local (volinfo->volname, slave, conf_path, &is_running); if (!ret && (_gf_true != is_running)) /* gsynd not running, nothing to do */ goto out; ret = stop_gsync (volinfo->volname, slave, &status_msg, conf_path, &op_errstr, is_force); if (ret == 0 && status_msg) ret = dict_set_str (resp_dict, "gsync-status", status_msg); if (ret == 0) { dict_del (volinfo->gsync_active_slaves, key); ret = glusterd_start_gsync (volinfo, slave, path_list, conf_path, uuid_utoa(MY_UUID), NULL, _gf_false); if (!ret) { /* Add slave to the dict indicating geo-rep session is * running.*/ ret = dict_set_dynstr_with_alloc ( volinfo->gsync_active_slaves, key, "running"); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to set" " key:%s value:running in dict. But " "the config succeeded.", key); goto out; } } } out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } static int32_t glusterd_marker_changelog_create_volfile (glusterd_volinfo_t *volinfo) { int32_t ret = 0; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); ret = glusterd_create_volfiles_and_notify_services (volinfo); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_VOLFILE_CREATE_FAIL, "Unable to create volfile for setting of marker " "while '"GEOREP" start'"); ret = -1; goto out; } ret = glusterd_store_volinfo (volinfo, GLUSTERD_VOLINFO_VER_AC_INCREMENT); if (ret) goto out; if (GLUSTERD_STATUS_STARTED == volinfo->status) ret = glusterd_svcs_manager (volinfo); ret = 0; out: return ret; } static int glusterd_set_gsync_knob (glusterd_volinfo_t *volinfo, char *key, int *vc) { int ret = -1; int conf_enabled = _gf_false; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (this->private); conf_enabled = glusterd_volinfo_get_boolean (volinfo, key); if (conf_enabled == -1) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GET_KEY_FAILED, "failed to get key %s from volinfo", key); goto out; } ret = 0; if (conf_enabled == _gf_false) { *vc = 1; ret = glusterd_gsync_volinfo_dict_set (volinfo, key, "on"); } out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } static int glusterd_set_gsync_confs (glusterd_volinfo_t *volinfo) { int ret = -1; int volfile_changed = 0; ret = glusterd_set_gsync_knob (volinfo, VKEY_MARKER_XTIME, &volfile_changed); if (ret) goto out; /** * enable ignore-pid-check blindly as it could be needed for * cascading setups. */ ret = glusterd_set_gsync_knob (volinfo, VKEY_MARKER_XTIME_FORCE, &volfile_changed); if (ret) goto out; ret = glusterd_set_gsync_knob (volinfo, VKEY_CHANGELOG, &volfile_changed); if (ret) goto out; if (volfile_changed) ret = glusterd_marker_changelog_create_volfile (volinfo); out: return ret; } static int glusterd_get_gsync_status_mst_slv (glusterd_volinfo_t *volinfo, char *slave, char *conf_path, dict_t *rsp_dict, char *node) { char *statefile = NULL; uuid_t uuid = {0, }; glusterd_conf_t *priv = NULL; int ret = 0; gf_boolean_t is_template_in_use = _gf_false; struct stat stbuf = {0, }; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (volinfo); GF_ASSERT (slave); GF_ASSERT (this->private); priv = this->private; ret = glusterd_gsync_get_uuid (slave, volinfo, uuid); if (ret) { gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_SESSION_INACTIVE, "geo-replication status %s %s : session is not " "active", volinfo->volname, slave); ret = glusterd_get_statefile_name (volinfo, slave, conf_path, &statefile, &is_template_in_use); if (ret) { if (!strstr(slave, "::")) gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_SLAVE_URL_INVALID, "%s is not a valid slave url.", slave); else gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_GET_STATEFILE_NAME_FAILED, "Unable to get statefile's name"); ret = 0; goto out; } ret = lstat (statefile, &stbuf); if (ret) { gf_msg (this->name, GF_LOG_INFO, ENOENT, GD_MSG_FILE_OP_FAILED, "%s statefile not present.", statefile); ret = 0; goto out; } } ret = glusterd_read_status_file (volinfo, slave, conf_path, rsp_dict, node); out: if (statefile) GF_FREE (statefile); gf_msg_debug (this->name, 0, "Returning with %d", ret); return ret; } static int glusterd_get_gsync_status_mst (glusterd_volinfo_t *volinfo, dict_t *rsp_dict, char *node) { glusterd_gsync_status_temp_t param = {0, }; GF_ASSERT (volinfo); param.rsp_dict = rsp_dict; param.volinfo = volinfo; param.node = node; dict_foreach (volinfo->gsync_slaves, _get_status_mst_slv, ¶m); return 0; } static int glusterd_get_gsync_status_all (dict_t *rsp_dict, char *node) { int32_t ret = 0; glusterd_conf_t *priv = NULL; glusterd_volinfo_t *volinfo = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); priv = this->private; GF_ASSERT (priv); cds_list_for_each_entry (volinfo, &priv->volumes, vol_list) { ret = glusterd_get_gsync_status_mst (volinfo, rsp_dict, node); if (ret) goto out; } out: gf_msg_debug (this->name, 0, "Returning with %d", ret); return ret; } static int glusterd_get_gsync_status (dict_t *dict, char **op_errstr, dict_t *rsp_dict) { char *slave = NULL; char *volname = NULL; char *conf_path = NULL; char errmsg[PATH_MAX] = {0, }; gf_boolean_t exists = _gf_false; glusterd_volinfo_t *volinfo = NULL; int ret = 0; char my_hostname[256] = {0,}; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); ret = gethostname(my_hostname, 256); if (ret) { /* stick to N/A */ (void) strcpy (my_hostname, "N/A"); } ret = dict_get_str (dict, "master", &volname); if (ret < 0){ ret = glusterd_get_gsync_status_all (rsp_dict, my_hostname); goto out; } exists = glusterd_check_volume_exists (volname); ret = glusterd_volinfo_find (volname, &volinfo); if ((ret) || (!exists)) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_VOL_NOT_FOUND, "volume name does not exist"); snprintf (errmsg, sizeof(errmsg), "Volume name %s does not" " exist", volname); *op_errstr = gf_strdup (errmsg); ret = -1; goto out; } ret = dict_get_str (dict, "slave", &slave); if (ret < 0) { ret = glusterd_get_gsync_status_mst (volinfo, rsp_dict, my_hostname); goto out; } ret = dict_get_str (dict, "conf_path", &conf_path); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch conf file path."); goto out; } ret = glusterd_get_gsync_status_mst_slv (volinfo, slave, conf_path, rsp_dict, my_hostname); out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } static int glusterd_gsync_delete (glusterd_volinfo_t *volinfo, char *slave, char *slave_host, char *slave_vol, char *path_list, dict_t *dict, dict_t *resp_dict, char **op_errstr) { int32_t ret = -1; runner_t runner = {0,}; glusterd_conf_t *priv = NULL; char *master = NULL; char *gl_workdir = NULL; char geo_rep_dir[PATH_MAX] = ""; char *conf_path = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (slave); GF_ASSERT (slave_host); GF_ASSERT (slave_vol); GF_ASSERT (op_errstr); GF_ASSERT (dict); GF_ASSERT (resp_dict); if (THIS) priv = THIS->private; if (priv == NULL) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GLUSTERD_PRIV_NOT_FOUND, "priv of glusterd not present"); *op_errstr = gf_strdup ("glusterd defunct"); goto out; } ret = dict_get_str (dict, "conf_path", &conf_path); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch conf file path."); goto out; } gl_workdir = priv->workdir; master = ""; runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gsyncd", "--delete", "-c", NULL); runner_argprintf (&runner, "%s", conf_path); runner_argprintf (&runner, "--iprefix=%s", DATADIR); if (volinfo) { master = volinfo->volname; runner_argprintf (&runner, ":%s", master); } runner_add_arg (&runner, slave); runner_redir (&runner, STDOUT_FILENO, RUN_PIPE); synclock_unlock (&priv->big_lock); ret = runner_run (&runner); synclock_lock (&priv->big_lock); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SESSION_DEL_FAILED, "gsyncd failed to delete session info for %s and " "%s peers", master, slave); gf_asprintf (op_errstr, "gsyncd failed to " "delete session info for %s and %s peers", master, slave); goto out; } ret = snprintf (geo_rep_dir, sizeof(geo_rep_dir) - 1, "%s/"GEOREP"/%s_%s_%s", gl_workdir, volinfo->volname, slave_host, slave_vol); geo_rep_dir[ret] = '\0'; ret = rmdir (geo_rep_dir); if (ret) { if (errno == ENOENT) gf_msg_debug (this->name, 0, "Geo Rep Dir(%s) Not Present.", geo_rep_dir); else { gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_DIR_OP_FAILED, "Unable to delete Geo Rep Dir(%s). Error: %s", geo_rep_dir, strerror (errno)); goto out; } } ret = 0; gf_asprintf (op_errstr, "delete successful"); out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_op_sys_exec (dict_t *dict, char **op_errstr, dict_t *rsp_dict) { char buf[PATH_MAX] = ""; char cmd_arg_name[PATH_MAX] = ""; char output_name[PATH_MAX] = ""; char errmsg[PATH_MAX] = ""; char *ptr = NULL; char *bufp = NULL; char *command = NULL; char **cmd_args = NULL; int ret = -1; int i = -1; int cmd_args_count = 0; int output_count = 0; glusterd_conf_t *priv = NULL; runner_t runner = {0,}; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); GF_ASSERT (dict); GF_ASSERT (op_errstr); GF_ASSERT (rsp_dict); if (THIS) priv = THIS->private; if (priv == NULL) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GLUSTERD_PRIV_NOT_FOUND, "priv of glusterd not present"); *op_errstr = gf_strdup ("glusterd defunct"); goto out; } ret = dict_get_str (dict, "command", &command); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get command from dict"); goto out; } ret = dict_get_int32 (dict, "cmd_args_count", &cmd_args_count); if (ret) gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_DICT_GET_FAILED, "No cmd_args_count"); if (cmd_args_count) { cmd_args = GF_CALLOC (cmd_args_count, sizeof (char*), gf_common_mt_char); if (!cmd_args) { gf_msg (this->name, GF_LOG_ERROR, ENOMEM, GD_MSG_NO_MEMORY, "Unable to calloc. Errno = %s", strerror(errno)); goto out; } for (i=1; i <= cmd_args_count; i++) { memset (cmd_arg_name, '\0', sizeof(cmd_arg_name)); snprintf (cmd_arg_name, sizeof(cmd_arg_name), "cmd_arg_%d", i); ret = dict_get_str (dict, cmd_arg_name, &cmd_args[i-1]); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to get" " %s in dict", cmd_arg_name); goto out; } } } runinit (&runner); runner_argprintf (&runner, GSYNCD_PREFIX"/peer_%s", command); for (i=0; i < cmd_args_count; i++) runner_add_arg (&runner, cmd_args[i]); runner_redir (&runner, STDOUT_FILENO, RUN_PIPE); synclock_unlock (&priv->big_lock); ret = runner_start (&runner); if (ret == -1) { snprintf (errmsg, sizeof (errmsg), "Unable to " "execute command. Error : %s", strerror (errno)); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_CMD_EXEC_FAIL, "%s", errmsg); ret = -1; synclock_lock (&priv->big_lock); goto out; } do { ptr = fgets(buf, sizeof(buf), runner_chio (&runner, STDOUT_FILENO)); if (ptr) { ret = dict_get_int32 (rsp_dict, "output_count", &output_count); if (ret) output_count = 1; else output_count++; memset (output_name, '\0', sizeof (output_name)); snprintf (output_name, sizeof (output_name), "output_%d", output_count); if (buf[strlen(buf) - 1] == '\n') buf[strlen(buf) - 1] = '\0'; bufp = gf_strdup (buf); if (!bufp) gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STRDUP_FAILED, "gf_strdup failed."); ret = dict_set_dynstr (rsp_dict, output_name, bufp); if (ret) { GF_FREE (bufp); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "output set " "failed."); } ret = dict_set_int32 (rsp_dict, "output_count", output_count); if (ret) gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "output_count " "set failed."); } } while (ptr); ret = runner_end (&runner); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to " "end. Error : %s", strerror (errno)); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_UNABLE_TO_END, "%s", errmsg); ret = -1; synclock_lock (&priv->big_lock); goto out; } synclock_lock (&priv->big_lock); ret = 0; out: if (cmd_args) { GF_FREE (cmd_args); cmd_args = NULL; } gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_op_copy_file (dict_t *dict, char **op_errstr) { char abs_filename[PATH_MAX] = ""; char errmsg[PATH_MAX] = ""; char *filename = NULL; char *host_uuid = NULL; char uuid_str [64] = {0}; char *contents = NULL; char buf[1024] = ""; int ret = -1; int fd = -1; int bytes_writen = 0; int bytes_read = 0; int contents_size = -1; int file_mode = -1; glusterd_conf_t *priv = NULL; struct stat stbuf = {0,}; gf_boolean_t free_contents = _gf_true; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); if (THIS) priv = THIS->private; if (priv == NULL) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GLUSTERD_PRIV_NOT_FOUND, "priv of glusterd not present"); *op_errstr = gf_strdup ("glusterd defunct"); goto out; } ret = dict_get_str (dict, "host-uuid", &host_uuid); if (ret < 0) goto out; ret = dict_get_str (dict, "source", &filename); if (ret < 0) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch filename from dict."); *op_errstr = gf_strdup ("command unsuccessful"); goto out; } snprintf (abs_filename, sizeof(abs_filename), "%s/%s", priv->workdir, filename); uuid_utoa_r (MY_UUID, uuid_str); if (!strcmp (uuid_str, host_uuid)) { ret = lstat (abs_filename, &stbuf); if (ret) { snprintf (errmsg, sizeof (errmsg), "Source file" " does not exist in %s", priv->workdir); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, ENOENT, GD_MSG_FILE_OP_FAILED, "%s", errmsg); goto out; } contents = GF_CALLOC(1, stbuf.st_size+1, gf_common_mt_char); if (!contents) { snprintf (errmsg, sizeof (errmsg), "Unable to allocate memory"); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, ENOMEM, GD_MSG_NO_MEMORY, "%s", errmsg); ret = -1; goto out; } fd = open (abs_filename, O_RDONLY); if (fd < 0) { snprintf (errmsg, sizeof (errmsg), "Unable to open %s", abs_filename); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_FILE_OP_FAILED, "%s", errmsg); ret = -1; goto out; } do { ret = read (fd, buf, sizeof(buf)); if (ret > 0) { memcpy (contents+bytes_read, buf, ret); bytes_read += ret; memset (buf, '\0', sizeof(buf)); } } while (ret > 0); if (bytes_read != stbuf.st_size) { snprintf (errmsg, sizeof (errmsg), "Unable to read all " "the data from %s", abs_filename); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_READ_ERROR, "%s", errmsg); ret = -1; goto out; } ret = dict_set_int32 (dict, "contents_size", stbuf.st_size); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to set" " contents size in dict."); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "%s", errmsg); goto out; } ret = dict_set_int32 (dict, "file_mode", (int32_t)stbuf.st_mode); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to set" " file mode in dict."); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "%s", errmsg); goto out; } ret = dict_set_bin (dict, "common_pem_contents", contents, stbuf.st_size); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to set" " pem contents in dict."); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "%s", errmsg); goto out; } free_contents = _gf_false; } else { free_contents = _gf_false; ret = dict_get_bin (dict, "common_pem_contents", (void **) &contents); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to get" " pem contents in dict."); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); goto out; } ret = dict_get_int32 (dict, "contents_size", &contents_size); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to set" " contents size in dict."); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); goto out; } ret = dict_get_int32 (dict, "file_mode", &file_mode); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to get" " file mode in dict."); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); goto out; } fd = open (abs_filename, O_WRONLY | O_TRUNC | O_CREAT, 0600); if (fd < 0) { snprintf (errmsg, sizeof (errmsg), "Unable to open %s", abs_filename); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_FILE_OP_FAILED, "%s", errmsg); ret = -1; goto out; } bytes_writen = write (fd, contents, contents_size); if (bytes_writen != contents_size) { snprintf (errmsg, sizeof (errmsg), "Failed to write" " to %s", abs_filename); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_FILE_OP_FAILED, "%s", errmsg); ret = -1; goto out; } fchmod (fd, file_mode); } ret = 0; out: if (fd != -1) close (fd); if (free_contents) GF_FREE(contents); gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_op_gsync_set (dict_t *dict, char **op_errstr, dict_t *rsp_dict) { int32_t ret = -1; int32_t type = -1; char *host_uuid = NULL; char *slave = NULL; char *slave_url = NULL; char *slave_vol = NULL; char *slave_host = NULL; char *volname = NULL; char *path_list = NULL; glusterd_volinfo_t *volinfo = NULL; glusterd_conf_t *priv = NULL; gf_boolean_t is_force = _gf_false; char *status_msg = NULL; gf_boolean_t is_running = _gf_false; char *conf_path = NULL; char errmsg[PATH_MAX] = ""; char *key = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); priv = this->private; GF_ASSERT (priv); GF_ASSERT (dict); GF_ASSERT (op_errstr); GF_ASSERT (rsp_dict); ret = dict_get_int32 (dict, "type", &type); if (ret < 0) goto out; ret = dict_get_str (dict, "host-uuid", &host_uuid); if (ret < 0) goto out; if (type == GF_GSYNC_OPTION_TYPE_STATUS) { ret = glusterd_get_gsync_status (dict, op_errstr, rsp_dict); goto out; } ret = dict_get_str (dict, "slave", &slave); if (ret < 0) goto out; key = slave; ret = dict_get_str (dict, "slave_url", &slave_url); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch slave url."); goto out; } ret = dict_get_str (dict, "slave_host", &slave_host); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch slave hostname."); goto out; } ret = dict_get_str (dict, "slave_vol", &slave_vol); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch slave volume name."); goto out; } ret = dict_get_str (dict, "conf_path", &conf_path); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch conf file path."); goto out; } if (dict_get_str (dict, "master", &volname) == 0) { ret = glusterd_volinfo_find (volname, &volinfo); if (ret) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_DICT_GET_FAILED, "Volinfo for" " %s (master) not found", volname); goto out; } ret = glusterd_get_local_brickpaths (volinfo, &path_list); } if (type == GF_GSYNC_OPTION_TYPE_CONFIG) { ret = glusterd_gsync_configure (volinfo, slave, path_list, dict, rsp_dict, op_errstr); if (!ret) { ret = dict_set_str (rsp_dict, "conf_path", conf_path); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to store conf_file_path."); goto out; } } goto out; } if (type == GF_GSYNC_OPTION_TYPE_DELETE) { ret = glusterd_remove_slave_in_info(volinfo, slave, op_errstr); if (ret && !is_force && path_list) goto out; ret = glusterd_gsync_delete (volinfo, slave, slave_host, slave_vol, path_list, dict, rsp_dict, op_errstr); goto out; } if (!volinfo) { ret = -1; goto out; } is_force = dict_get_str_boolean (dict, "force", _gf_false); if (type == GF_GSYNC_OPTION_TYPE_START) { /* Add slave to the dict indicating geo-rep session is running*/ ret = dict_set_dynstr_with_alloc (volinfo->gsync_active_slaves, key, "running"); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to set key:%s" " value:running in the dict", key); goto out; } ret = glusterd_start_gsync (volinfo, slave, path_list, conf_path, host_uuid, op_errstr, _gf_false); /* Delete added slave in the dict if start fails*/ if (ret) dict_del (volinfo->gsync_active_slaves, key); } if (type == GF_GSYNC_OPTION_TYPE_STOP || type == GF_GSYNC_OPTION_TYPE_PAUSE || type == GF_GSYNC_OPTION_TYPE_RESUME) { ret = glusterd_check_gsync_running_local (volinfo->volname, slave, conf_path, &is_running); if (!ret && !is_force && path_list && (_gf_true != is_running)) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_GSYNCD_OP_SET_FAILED, GEOREP" is not " "set up for %s(master) and %s(slave)", volname, slave); *op_errstr = strdup (GEOREP" is not set up"); goto out; } if (type == GF_GSYNC_OPTION_TYPE_PAUSE) { ret = gd_pause_or_resume_gsync (dict, volname, slave, slave_host, slave_vol, conf_path, op_errstr, _gf_true); if (ret) gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_PAUSE_FAILED, GEOREP" Pause Failed"); else dict_del (volinfo->gsync_active_slaves, key); } else if (type == GF_GSYNC_OPTION_TYPE_RESUME) { /* Add slave to the dict indicating geo-rep session is * running*/ ret = dict_set_dynstr_with_alloc ( volinfo->gsync_active_slaves, key, "running"); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to set " "key:%s value:running in dict", key); goto out; } ret = gd_pause_or_resume_gsync (dict, volname, slave, slave_host, slave_vol, conf_path, op_errstr, _gf_false); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_RESUME_FAILED, GEOREP" Resume Failed"); dict_del (volinfo->gsync_active_slaves, key); } } else { ret = stop_gsync (volname, slave, &status_msg, conf_path, op_errstr, is_force); if (ret == 0 && status_msg) ret = dict_set_str (rsp_dict, "gsync-status", status_msg); if (!ret) { ret = glusterd_create_status_file ( volinfo->volname, slave, slave_host, slave_vol,"Stopped"); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_UPDATE_STATEFILE_FAILED, "Unable to update state_file. " "Error : %s", strerror (errno)); } dict_del (volinfo->gsync_active_slaves, key); } } } out: if (path_list) { GF_FREE (path_list); path_list = NULL; } gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_get_slave_details_confpath (glusterd_volinfo_t *volinfo, dict_t *dict, char **slave_url, char **slave_host, char **slave_vol, char **conf_path, char **op_errstr) { int ret = -1; char confpath[PATH_MAX] = ""; glusterd_conf_t *priv = NULL; char *slave = NULL; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); priv = this->private; GF_ASSERT (priv); ret = dict_get_str (dict, "slave", &slave); if (ret || !slave) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "Unable to fetch slave from dict"); ret = -1; goto out; } ret = glusterd_get_slave_info (slave, slave_url, slave_host, slave_vol, op_errstr); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_FETCH_ERROR, "Unable to fetch slave details."); ret = -1; goto out; } ret = dict_set_str (dict, "slave_url", *slave_url); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to store slave IP."); goto out; } ret = dict_set_str (dict, "slave_host", *slave_host); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to store slave hostname"); goto out; } ret = dict_set_str (dict, "slave_vol", *slave_vol); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to store slave volume name."); goto out; } ret = snprintf (confpath, sizeof(confpath) - 1, "%s/"GEOREP"/%s_%s_%s/gsyncd.conf", priv->workdir, volinfo->volname, *slave_host, *slave_vol); confpath[ret] = '\0'; *conf_path = gf_strdup (confpath); if (!(*conf_path)) { gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_STRDUP_FAILED, "Unable to gf_strdup. Error: %s", strerror (errno)); ret = -1; goto out; } ret = dict_set_str (dict, "conf_path", *conf_path); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Unable to store conf_path"); goto out; } out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_get_slave_info (char *slave, char **slave_url, char **hostname, char **slave_vol, char **op_errstr) { char *tmp = NULL; char *save_ptr = NULL; char **linearr = NULL; int32_t ret = -1; char errmsg[PATH_MAX] = ""; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); ret = glusterd_urltransform_single (slave, "normalize", &linearr); if (ret == -1) { ret = snprintf (errmsg, sizeof(errmsg) - 1, "Invalid Url: %s", slave); errmsg[ret] = '\0'; *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_NORMALIZE_URL_FAIL, "Failed to normalize url"); goto out; } tmp = strtok_r (linearr[0], "/", &save_ptr); tmp = strtok_r (NULL, "/", &save_ptr); slave = strtok_r (tmp, ":", &save_ptr); if (slave) { ret = glusterd_geo_rep_parse_slave (slave, hostname, op_errstr); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_URL_INVALID, "Invalid slave url: %s", *op_errstr); goto out; } gf_msg_debug (this->name, 0, "Hostname : %s", *hostname); *slave_url = gf_strdup (slave); if (!*slave_url) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STRDUP_FAILED, "Failed to gf_strdup"); ret = -1; goto out; } gf_msg_debug (this->name, 0, "Slave URL : %s", *slave_url); ret = 0; } else { gf_msg (this->name, GF_LOG_ERROR, EINVAL, GD_MSG_INVALID_ENTRY, "Invalid slave name"); goto out; } slave = strtok_r (NULL, ":", &save_ptr); if (slave) { *slave_vol = gf_strdup (slave); if (!*slave_vol) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STRDUP_FAILED, "Failed to gf_strdup"); ret = -1; GF_FREE (*slave_url); goto out; } gf_msg_debug (this->name, 0, "Slave Vol : %s", *slave_vol); ret = 0; } else { gf_msg (this->name, GF_LOG_ERROR, EINVAL, GD_MSG_INVALID_ENTRY, "Invalid slave name"); goto out; } out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } static void runinit_gsyncd_setrx (runner_t *runner, char *conf_path) { runinit (runner); runner_add_args (runner, GSYNCD_PREFIX"/gsyncd", "-c", NULL); runner_argprintf (runner, "%s", conf_path); runner_add_arg (runner, "--config-set-rx"); } static int glusterd_check_gsync_present (int *valid_state) { char buff[PATH_MAX] = {0, }; runner_t runner = {0,}; char *ptr = NULL; int ret = 0; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); runinit (&runner); runner_add_args (&runner, GSYNCD_PREFIX"/gsyncd", "--version", NULL); runner_redir (&runner, STDOUT_FILENO, RUN_PIPE); ret = runner_start (&runner); if (ret == -1) { if (errno == ENOENT) { gf_msg ("glusterd", GF_LOG_INFO, ENOENT, GD_MSG_MODULE_NOT_INSTALLED, GEOREP" module " "not installed in the system"); *valid_state = 0; } else { gf_msg ("glusterd", GF_LOG_ERROR, 0, GD_MSG_MODULE_ERROR, GEOREP" module not working as desired"); *valid_state = -1; } goto out; } ptr = fgets(buff, sizeof(buff), runner_chio (&runner, STDOUT_FILENO)); if (ptr) { if (!strstr (buff, "gsyncd")) { ret = -1; gf_msg ("glusterd", GF_LOG_ERROR, 0, GD_MSG_MODULE_ERROR, GEOREP" module not working as desired"); *valid_state = -1; goto out; } } else { ret = -1; gf_msg ("glusterd", GF_LOG_ERROR, 0, GD_MSG_MODULE_ERROR, GEOREP" module not working as desired"); *valid_state = -1; goto out; } ret = 0; out: runner_end (&runner); gf_msg_debug ("glusterd", 0, "Returning %d", ret); return ret; } static int create_conf_file (glusterd_conf_t *conf, char *conf_path) #define RUN_GSYNCD_CMD do { \ ret = runner_run_reuse (&runner); \ if (ret == -1) { \ runner_log (&runner, "glusterd", GF_LOG_ERROR, "command failed"); \ runner_end (&runner); \ goto out; \ } \ runner_end (&runner); \ } while (0) { int ret = 0; runner_t runner = {0,}; char georepdir[PATH_MAX] = {0,}; int valid_state = 0; valid_state = -1; ret = glusterd_check_gsync_present (&valid_state); if (-1 == ret) { ret = valid_state; goto out; } ret = snprintf (georepdir, sizeof(georepdir) - 1, "%s/"GEOREP, conf->workdir); georepdir[ret] = '\0'; /************ * master pre-configuration ************/ /* remote-gsyncd */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "remote-gsyncd", GSYNCD_PREFIX"/gsyncd", ".", ".", NULL); RUN_GSYNCD_CMD; runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "remote-gsyncd", "/nonexistent/gsyncd", ".", "^ssh:", NULL); RUN_GSYNCD_CMD; /* gluster-command-dir */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "gluster-command-dir", SBIN_DIR"/", ".", ".", NULL); RUN_GSYNCD_CMD; /* gluster-params */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "gluster-params", "aux-gfid-mount acl", ".", ".", NULL); RUN_GSYNCD_CMD; /* ssh-command */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_arg (&runner, "ssh-command"); runner_argprintf (&runner, "ssh -oPasswordAuthentication=no " "-oStrictHostKeyChecking=no " "-i %s/secret.pem", georepdir); runner_add_args (&runner, ".", ".", NULL); RUN_GSYNCD_CMD; /* ssh-command tar */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_arg (&runner, "ssh-command-tar"); runner_argprintf (&runner, "ssh -oPasswordAuthentication=no " "-oStrictHostKeyChecking=no " "-i %s/tar_ssh.pem", georepdir); runner_add_args (&runner, ".", ".", NULL); RUN_GSYNCD_CMD; /* pid-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_arg (&runner, "pid-file"); runner_argprintf (&runner, "%s/${mastervol}_${remotehost}_${slavevol}/monitor.pid", georepdir); runner_add_args (&runner, ".", ".", NULL); RUN_GSYNCD_CMD; /* geo-rep-working-dir */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_arg (&runner, "georep-session-working-dir"); runner_argprintf (&runner, "%s/${mastervol}_${remotehost}_${slavevol}/", georepdir); runner_add_args (&runner, ".", ".", NULL); RUN_GSYNCD_CMD; /* state-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_arg (&runner, "state-file"); runner_argprintf (&runner, "%s/${mastervol}_${remotehost}_${slavevol}/monitor.status", georepdir); runner_add_args (&runner, ".", ".", NULL); RUN_GSYNCD_CMD; /* state-detail-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_arg (&runner, "state-detail-file"); runner_argprintf (&runner, "%s/${mastervol}_${remotehost}_${slavevol}/${eSlave}-detail.status", georepdir); runner_add_args (&runner, ".", ".", NULL); RUN_GSYNCD_CMD; /* state-socket */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_arg (&runner, "state-socket-unencoded"); runner_argprintf (&runner, "%s/${mastervol}_${remotehost}_${slavevol}/${eSlave}.socket", georepdir); runner_add_args (&runner, ".", ".", NULL); RUN_GSYNCD_CMD; /* socketdir */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "socketdir", GLUSTERD_SOCK_DIR, ".", ".", NULL); RUN_GSYNCD_CMD; /* log-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "log-file", DEFAULT_LOG_FILE_DIRECTORY"/"GEOREP"/${mastervol}/${eSlave}.log", ".", ".", NULL); RUN_GSYNCD_CMD; /* changelog-log-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "changelog-log-file", DEFAULT_LOG_FILE_DIRECTORY"/"GEOREP"/${mastervol}/${eSlave}${local_id}-changes.log", ".", ".", NULL); RUN_GSYNCD_CMD; /* gluster-log-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "gluster-log-file", DEFAULT_LOG_FILE_DIRECTORY"/"GEOREP"/${mastervol}/${eSlave}${local_id}.gluster.log", ".", ".", NULL); RUN_GSYNCD_CMD; /* ignore-deletes */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "ignore-deletes", "false", ".", ".", NULL); RUN_GSYNCD_CMD; /* special-sync-mode */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "special-sync-mode", "partial", ".", ".", NULL); RUN_GSYNCD_CMD; /* change-detector == changelog */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args(&runner, "change-detector", "changelog", ".", ".", NULL); RUN_GSYNCD_CMD; runinit_gsyncd_setrx (&runner, conf_path); runner_add_arg(&runner, "working-dir"); runner_argprintf(&runner, "%s/${mastervol}/${eSlave}", DEFAULT_GLUSTERFSD_MISC_DIRETORY); runner_add_args (&runner, ".", ".", NULL); RUN_GSYNCD_CMD; /************ * slave pre-configuration ************/ /* gluster-command-dir */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "gluster-command-dir", SBIN_DIR"/", ".", NULL); RUN_GSYNCD_CMD; /* gluster-params */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "gluster-params", "aux-gfid-mount acl", ".", NULL); RUN_GSYNCD_CMD; /* log-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "log-file", DEFAULT_LOG_FILE_DIRECTORY"/"GEOREP"-slaves/${session_owner}:${eSlave}.log", ".", NULL); RUN_GSYNCD_CMD; /* MountBroker log-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "log-file-mbr", DEFAULT_LOG_FILE_DIRECTORY"/"GEOREP"-slaves/mbr/${session_owner}:${eSlave}.log", ".", NULL); RUN_GSYNCD_CMD; /* gluster-log-file */ runinit_gsyncd_setrx (&runner, conf_path); runner_add_args (&runner, "gluster-log-file", DEFAULT_LOG_FILE_DIRECTORY"/"GEOREP"-slaves/${session_owner}:${eSlave}.gluster.log", ".", NULL); RUN_GSYNCD_CMD; out: return ret ? -1 : 0; } static int glusterd_create_essential_dir_files (glusterd_volinfo_t *volinfo, dict_t *dict, char *slave, char *slave_host, char *slave_vol, char **op_errstr) { int ret = -1; char *conf_path = NULL; char *statefile = NULL; char buf[PATH_MAX] = ""; char errmsg[PATH_MAX] = ""; glusterd_conf_t *conf = NULL; struct stat stbuf = {0,}; xlator_t *this = NULL; this = THIS; GF_ASSERT (this); conf = this->private; ret = dict_get_str (dict, "conf_path", &conf_path); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to fetch conf file path."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); goto out; } ret = dict_get_str (dict, "statefile", &statefile); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to fetch statefile path."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); goto out; } ret = snprintf (buf, sizeof(buf) - 1, "%s/"GEOREP"/%s_%s_%s", conf->workdir, volinfo->volname, slave_host, slave_vol); buf[ret] = '\0'; ret = mkdir_p (buf, 0777, _gf_true); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to create %s" ". Error : %s", buf, strerror (errno)); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_DIR_OP_FAILED, "%s", errmsg); goto out; } ret = snprintf (buf, PATH_MAX, DEFAULT_LOG_FILE_DIRECTORY"/"GEOREP"/%s", volinfo->volname); buf[ret] = '\0'; ret = mkdir_p (buf, 0777, _gf_true); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to create %s" ". Error : %s", buf, strerror (errno)); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_DIR_OP_FAILED, "%s", errmsg); goto out; } ret = lstat (conf_path, &stbuf); if (!ret) { gf_msg_debug (this->name, 0, "Session already running." " Not creating config file again."); } else { ret = create_conf_file (conf, conf_path); if (ret || lstat (conf_path, &stbuf)) { snprintf (errmsg, sizeof (errmsg), "Failed to create" " config file(%s).", conf_path); gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_FILE_OP_FAILED, "%s", errmsg); goto out; } } ret = lstat (statefile, &stbuf); if (!ret) { gf_msg_debug (this->name, 0, "Session already running." " Not creating status file again."); goto out; } else { ret = glusterd_create_status_file (volinfo->volname, slave, slave_host, slave_vol, "Created"); if (ret || lstat (statefile, &stbuf)) { snprintf (errmsg, sizeof (errmsg), "Unable to create %s" ". Error : %s", statefile, strerror (errno)); *op_errstr = gf_strdup (errmsg); gf_msg (this->name, GF_LOG_ERROR, errno, GD_MSG_FILE_OP_FAILED, "%s", errmsg); ret = -1; goto out; } } out: gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; } int glusterd_op_gsync_create (dict_t *dict, char **op_errstr, dict_t *rsp_dict) { char common_pem_file[PATH_MAX] = ""; char errmsg[PATH_MAX] = {0,}; char hooks_args[PATH_MAX] = ""; char uuid_str [64] = ""; char *host_uuid = NULL; char *slave_url = NULL; char *slave_url_buf = NULL; char *slave_user = NULL; char *slave_ip = NULL; char *save_ptr = NULL; char *slave_host = NULL; char *slave_vol = NULL; char *arg_buf = NULL; char *volname = NULL; char *slave = NULL; int32_t ret = -1; int32_t is_pem_push = -1; int32_t ssh_port = 22; gf_boolean_t is_force = -1; glusterd_conf_t *conf = NULL; glusterd_volinfo_t *volinfo = NULL; xlator_t *this = NULL; char old_working_dir[PATH_MAX] = {0}; char new_working_dir[PATH_MAX] = {0}; char *slave_info = NULL; char slave_url_info[SLAVE_URL_INFO_MAX] = {0}; char *slave_voluuid = NULL; char *old_slavehost = NULL; gf_boolean_t is_existing_session = _gf_false; this = THIS; GF_ASSERT (this); conf = this->private; GF_ASSERT (conf); GF_ASSERT (dict); GF_ASSERT (op_errstr); ret = glusterd_op_gsync_args_get (dict, op_errstr, &volname, &slave, &host_uuid); if (ret) goto out; snprintf (common_pem_file, sizeof(common_pem_file), "%s"GLUSTERD_COMMON_PEM_PUB_FILE, conf->workdir); ret = glusterd_volinfo_find (volname, &volinfo); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_VOL_NOT_FOUND, "Volinfo for %s (master) not found", volname); goto out; } ret = dict_get_str (dict, "slave_vol", &slave_vol); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to fetch slave volume name."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); goto out; } ret = dict_get_str (dict, "slave_url", &slave_url); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to fetch slave IP."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); ret = -1; goto out; } /* Fetch the slave_user and slave_ip from the slave_url. * If the slave_user is not present. Use "root" */ if (strstr(slave_url, "@")) { slave_url_buf = gf_strdup (slave_url); if (!slave_url_buf) { ret = -1; goto out; } slave_user = strtok_r (slave_url, "@", &save_ptr); slave_ip = strtok_r (NULL, "@", &save_ptr); } else { slave_user = "root"; slave_ip = slave_url; } if (!slave_user || !slave_ip) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVE_URL_INVALID, "Invalid slave url."); ret = -1; goto out; } ret = dict_get_str (dict, "slave_host", &slave_host); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to fetch slave host"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); ret = -1; goto out; } ret = dict_get_int32 (dict, "ssh_port", &ssh_port); if (ret < 0 && ret != -ENOENT) { snprintf (errmsg, sizeof (errmsg), "Fetching ssh_port failed"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); ret = -1; goto out; } is_force = dict_get_str_boolean (dict, "force", _gf_false); uuid_utoa_r (MY_UUID, uuid_str); if (!strcmp (uuid_str, host_uuid)) { ret = dict_get_int32 (dict, "push_pem", &is_pem_push); if (!ret && is_pem_push) { gf_msg_debug (this->name, 0, "Trying to setup" " pem files in slave"); is_pem_push = 1; } else is_pem_push = 0; snprintf(hooks_args, sizeof(hooks_args), "is_push_pem=%d,pub_file=%s,slave_user=%s,slave_ip=%s," "slave_vol=%s,ssh_port=%d", is_pem_push, common_pem_file, slave_user, slave_ip, slave_vol, ssh_port); } else snprintf(hooks_args, sizeof(hooks_args), "This argument will stop the hooks script"); arg_buf = gf_strdup (hooks_args); if (!arg_buf) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_STRDUP_FAILED, "Failed to gf_strdup"); if (is_force) { ret = 0; goto create_essentials; } ret = -1; goto out; } ret = dict_set_str (dict, "hooks_args", arg_buf); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_SET_FAILED, "Failed to set hooks_args in dict."); if (is_force) { ret = 0; goto create_essentials; } goto out; } create_essentials: /* Fetch slave volume uuid, to get stored in volume info. */ ret = dict_get_str (dict, "slave_voluuid", &slave_voluuid); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to fetch slave volume uuid from dict"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); ret = -1; goto out; } is_existing_session = dict_get_str_boolean (dict, "existing_session", _gf_false); if (is_existing_session) { ret = dict_get_str (dict, "old_slavehost", &old_slavehost); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to fetch old_slavehost"); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_DICT_GET_FAILED, "%s", errmsg); ret = -1; goto out; } /* Rename existing geo-rep session with new Slave Host */ ret = snprintf (old_working_dir, sizeof (old_working_dir) - 1, "%s/"GEOREP"/%s_%s_%s", conf->workdir, volinfo->volname, old_slavehost, slave_vol); ret = snprintf (new_working_dir, sizeof (new_working_dir) - 1, "%s/"GEOREP"/%s_%s_%s", conf->workdir, volinfo->volname, slave_host, slave_vol); ret = sys_rename (old_working_dir, new_working_dir); if (!ret) { gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_FORCE_CREATE_SESSION, "rename of old working dir %s to " "new working dir %s is done! ", old_working_dir, new_working_dir); } else { if (errno == ENOENT) { /* log error, but proceed with directory * creation below */ gf_msg_debug (this->name, 0, "old_working_dir(%s) " "not present.", old_working_dir); } else { snprintf (errmsg, sizeof (errmsg), "rename of old working dir %s to " "new working dir %s failed! Error: %s", old_working_dir, new_working_dir, strerror (errno)); gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_FORCE_CREATE_SESSION, "rename of old working dir %s to " "new working dir %s failed! Error: %s!", old_working_dir, new_working_dir, strerror (errno)); ret = -1; goto out; } } } ret = glusterd_create_essential_dir_files (volinfo, dict, slave, slave_host, slave_vol, op_errstr); if (ret) goto out; ret = glusterd_store_slave_in_info (volinfo, slave, host_uuid, slave_voluuid, op_errstr, is_force); if (ret) { snprintf (errmsg, sizeof (errmsg), "Unable to store" " slave info."); gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_SLAVEINFO_STORE_ERROR, "%s", errmsg); goto out; } /* Enable marker and changelog */ ret = glusterd_set_gsync_confs (volinfo); if (ret != 0) { gf_msg (this->name, GF_LOG_WARNING, 0, GD_MSG_MARKER_START_FAIL, "marker/changelog" " start failed"); snprintf (errmsg, sizeof (errmsg), "Index initialization failed"); ret = -1; goto out; } out: if (ret && errmsg[0] != '\0') { gf_msg (this->name, GF_LOG_ERROR, 0, GD_MSG_GSYNCD_ERROR, "%s", errmsg); *op_errstr = gf_strdup (errmsg); } GF_FREE (slave_url_buf); gf_msg_debug (this->name, 0, "Returning %d", ret); return ret; }