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-rw-r--r--xlators/mgmt/glusterd/src/glusterd-mgmt.c1899
1 files changed, 1899 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-mgmt.c b/xlators/mgmt/glusterd/src/glusterd-mgmt.c
new file mode 100644
index 0000000..5295f88
--- /dev/null
+++ b/xlators/mgmt/glusterd/src/glusterd-mgmt.c
@@ -0,0 +1,1899 @@
+/*
+ Copyright (c) 2013-2014 Red Hat, Inc. <http://www.redhat.com>
+ 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.
+*/
+/* rpc related syncops */
+#include "rpc-clnt.h"
+#include "protocol-common.h"
+#include "xdr-generic.h"
+#include "glusterd1-xdr.h"
+#include "glusterd-syncop.h"
+
+#include "glusterd.h"
+#include "glusterd-utils.h"
+#include "glusterd-locks.h"
+#include "glusterd-mgmt.h"
+#include "glusterd-op-sm.h"
+
+extern struct rpc_clnt_program gd_mgmt_v3_prog;
+
+
+static void
+gd_mgmt_v3_collate_errors (struct syncargs *args, int op_ret, int op_errno,
+ char *op_errstr, int op_code,
+ glusterd_peerinfo_t *peerinfo, u_char *uuid)
+{
+ char *peer_str = NULL;
+ char err_str[PATH_MAX] = "Please check log file for details.";
+ char op_err[PATH_MAX] = "";
+ int32_t len = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (args);
+ GF_ASSERT (uuid);
+
+ if (op_ret) {
+ args->op_ret = op_ret;
+ args->op_errno = op_errno;
+
+ if (peerinfo)
+ peer_str = peerinfo->hostname;
+ else
+ peer_str = uuid_utoa (uuid);
+
+ if (op_errstr && strcmp (op_errstr, "")) {
+ len = snprintf (err_str, sizeof(err_str) - 1,
+ "Error: %s", op_errstr);
+ err_str[len] = '\0';
+ }
+
+ switch (op_code) {
+ case GLUSTERD_MGMT_V3_LOCK:
+ {
+ len = snprintf (op_err, sizeof(op_err) - 1,
+ "Locking failed "
+ "on %s. %s", peer_str, err_str);
+ break;
+ }
+ case GLUSTERD_MGMT_V3_PRE_VALIDATE:
+ {
+ len = snprintf (op_err, sizeof(op_err) - 1,
+ "Pre Validation failed "
+ "on %s. %s", peer_str, err_str);
+ break;
+ }
+ case GLUSTERD_MGMT_V3_BRICK_OP:
+ {
+ len = snprintf (op_err, sizeof(op_err) - 1,
+ "Brick ops failed "
+ "on %s. %s", peer_str, err_str);
+ break;
+ }
+ case GLUSTERD_MGMT_V3_COMMIT:
+ {
+ len = snprintf (op_err, sizeof(op_err) - 1,
+ "Commit failed on %s. %s",
+ peer_str, err_str);
+ break;
+ }
+ case GLUSTERD_MGMT_V3_POST_VALIDATE:
+ {
+ len = snprintf (op_err, sizeof(op_err) - 1,
+ "Post Validation failed "
+ "on %s. %s", peer_str, err_str);
+ break;
+ }
+ case GLUSTERD_MGMT_V3_UNLOCK:
+ {
+ len = snprintf (op_err, sizeof(op_err) - 1,
+ "Unlocking failed "
+ "on %s. %s", peer_str, err_str);
+ break;
+ }
+ }
+ op_err[len] = '\0';
+
+ if (args->errstr) {
+ len = snprintf (err_str, sizeof(err_str) - 1,
+ "%s\n%s", args->errstr,
+ op_err);
+ GF_FREE (args->errstr);
+ args->errstr = NULL;
+ } else
+ len = snprintf (err_str, sizeof(err_str) - 1,
+ "%s", op_err);
+ err_str[len] = '\0';
+
+ gf_log (this->name, GF_LOG_ERROR, "%s", op_err);
+ args->errstr = gf_strdup (err_str);
+ }
+
+ return;
+}
+
+int32_t
+gd_mgmt_v3_pre_validate_fn (glusterd_op_t op, dict_t *dict,
+ char **op_errstr, dict_t *rsp_dict)
+{
+ int32_t ret = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (dict);
+ GF_ASSERT (op_errstr);
+ GF_ASSERT (rsp_dict);
+
+ switch (op) {
+ case GD_OP_SNAP:
+ ret = glusterd_snapshot_prevalidate (dict, op_errstr,
+ rsp_dict);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "Snapshot Prevalidate Failed");
+ goto out;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+
+ ret = 0;
+out:
+ gf_log (this->name, GF_LOG_DEBUG, "OP = %d. Returning %d", op, ret);
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_brick_op_fn (glusterd_op_t op, dict_t *dict,
+ char **op_errstr, dict_t *rsp_dict)
+{
+ int32_t ret = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (dict);
+ GF_ASSERT (op_errstr);
+ GF_ASSERT (rsp_dict);
+
+ switch (op) {
+ case GD_OP_SNAP:
+ {
+ ret = glusterd_snapshot_brickop (dict, op_errstr, rsp_dict);
+ if (ret) {
+ gf_log (this->name, GF_LOG_WARNING, "snapshot brickop "
+ "failed");
+ goto out;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ ret = 0;
+out:
+ gf_log (this->name, GF_LOG_TRACE, "OP = %d. Returning %d", op, ret);
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_commit_fn (glusterd_op_t op, dict_t *dict,
+ char **op_errstr, dict_t *rsp_dict)
+{
+ int32_t ret = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (dict);
+ GF_ASSERT (op_errstr);
+ GF_ASSERT (rsp_dict);
+
+ switch (op) {
+ case GD_OP_SNAP:
+ {
+ ret = glusterd_snapshot (dict, op_errstr, rsp_dict);
+ if (ret) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "Snapshot Commit Failed");
+ goto out;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ ret = 0;
+out:
+ gf_log (this->name, GF_LOG_DEBUG, "OP = %d. Returning %d", op, ret);
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_post_validate_fn (glusterd_op_t op, int32_t op_ret, dict_t *dict,
+ char **op_errstr, dict_t *rsp_dict)
+{
+ int32_t ret = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (dict);
+ GF_ASSERT (op_errstr);
+ GF_ASSERT (rsp_dict);
+
+ switch (op) {
+ case GD_OP_SNAP:
+ {
+ ret = glusterd_snapshot_postvalidate (dict, op_ret,
+ op_errstr,
+ rsp_dict);
+ if (ret) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "postvalidate operation failed");
+ goto out;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ ret = 0;
+
+out:
+ gf_log (this->name, GF_LOG_TRACE, "OP = %d. Returning %d", op, ret);
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_lock_cbk_fn (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ int32_t ret = -1;
+ struct syncargs *args = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ gd1_mgmt_v3_lock_rsp rsp = {{0},};
+ call_frame_t *frame = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (myframe);
+
+ /* Even though the lock command has failed, while collating the errors
+ (gd_mgmt_v3_collate_errors), args->op_ret and args->op_errno will be
+ used. @args is obtained from frame->local. So before checking the
+ status of the request and going out if its a failure, args should be
+ set to frame->local. Otherwise, while collating args will be NULL.
+ This applies to other phases such as prevalidate, brickop, commit and
+ postvalidate also.
+ */
+ frame = myframe;
+ args = frame->local;
+ peerinfo = frame->cookie;
+ frame->local = NULL;
+ frame->cookie = NULL;
+
+ if (-1 == req->rpc_status) {
+ op_errno = ENOTCONN;
+ goto out;
+ }
+
+ if (!iov) {
+ gf_log (this->name, GF_LOG_ERROR, "iov is NULL");
+ op_errno = EINVAL;
+ goto out;
+ }
+
+ ret = xdr_to_generic (*iov, &rsp,
+ (xdrproc_t)xdr_gd1_mgmt_v3_lock_rsp);
+ if (ret < 0)
+ goto out;
+
+ uuid_copy (args->uuid, rsp.uuid);
+
+ op_ret = rsp.op_ret;
+ op_errno = rsp.op_errno;
+
+out:
+ gd_mgmt_v3_collate_errors (args, op_ret, op_errno, NULL,
+ GLUSTERD_MGMT_V3_LOCK,
+ peerinfo, rsp.uuid);
+ if (rsp.dict.dict_val)
+ free (rsp.dict.dict_val);
+ STACK_DESTROY (frame->root);
+ synctask_barrier_wake(args);
+ return 0;
+}
+
+int32_t
+gd_mgmt_v3_lock_cbk (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ return glusterd_big_locked_cbk (req, iov, count, myframe,
+ gd_mgmt_v3_lock_cbk_fn);
+}
+
+int
+gd_mgmt_v3_lock (glusterd_op_t op, dict_t *op_ctx,
+ glusterd_peerinfo_t *peerinfo,
+ struct syncargs *args, uuid_t my_uuid,
+ uuid_t recv_uuid)
+{
+ gd1_mgmt_v3_lock_req req = {{0},};
+ glusterd_conf_t *conf = THIS->private;
+ int32_t ret = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (op_ctx);
+ GF_ASSERT (peerinfo);
+ GF_ASSERT (args);
+
+ ret = dict_allocate_and_serialize (op_ctx,
+ &req.dict.dict_val,
+ &req.dict.dict_len);
+ if (ret)
+ goto out;
+
+ uuid_copy (req.uuid, my_uuid);
+ req.op = op;
+ synclock_unlock (&conf->big_lock);
+ ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, peerinfo,
+ &gd_mgmt_v3_prog,
+ GLUSTERD_MGMT_V3_LOCK,
+ gd_mgmt_v3_lock_cbk,
+ (xdrproc_t) xdr_gd1_mgmt_v3_lock_req);
+ synclock_lock (&conf->big_lock);
+out:
+ GF_FREE (req.dict.dict_val);
+ gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);
+ return ret;
+}
+
+int
+glusterd_mgmt_v3_initiate_lockdown (glusterd_conf_t *conf, glusterd_op_t op,
+ dict_t *dict, char **op_errstr, int npeers,
+ gf_boolean_t *is_acquired)
+{
+ char *volname = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ int32_t ret = -1;
+ int32_t peer_cnt = 0;
+ struct syncargs args = {0};
+ struct list_head *peers = NULL;
+ uuid_t peer_uuid = {0};
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (conf);
+ GF_ASSERT (dict);
+ GF_ASSERT (op_errstr);
+ GF_ASSERT (is_acquired);
+
+ peers = &conf->xaction_peers;
+
+ /* Trying to acquire multiple mgmt_v3 locks on local node */
+ ret = glusterd_multiple_mgmt_v3_lock (dict, MY_UUID);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to acquire mgmt_v3 locks on localhost");
+ goto out;
+ }
+
+ *is_acquired = _gf_true;
+
+ if (!npeers) {
+ ret = 0;
+ goto out;
+ }
+
+ /* Sending mgmt_v3 lock req to other nodes in the cluster */
+ gd_syncargs_init (&args, NULL);
+ synctask_barrier_init((&args));
+ peer_cnt = 0;
+ list_for_each_entry (peerinfo, peers, op_peers_list) {
+ gd_mgmt_v3_lock (op, dict, peerinfo, &args,
+ MY_UUID, peer_uuid);
+ peer_cnt++;
+ }
+ gd_synctask_barrier_wait((&args), peer_cnt);
+
+ if (args.errstr)
+ *op_errstr = gf_strdup (args.errstr);
+
+ ret = args.op_ret;
+
+ gf_log (this->name, GF_LOG_DEBUG, "Sent lock op req for %s "
+ "to %d peers. Returning %d", gd_op_list[op], peer_cnt, ret);
+out:
+ if (ret) {
+ if (*op_errstr)
+ gf_log (this->name, GF_LOG_ERROR, "%s",
+ *op_errstr);
+
+ if (volname)
+ ret = gf_asprintf (op_errstr,
+ "Another transaction is in progress "
+ "for %s. Please try again after "
+ "sometime.", volname);
+ else
+ ret = gf_asprintf (op_errstr,
+ "Another transaction is in progress "
+ "Please try again after sometime.");
+
+ if (ret == -1)
+ *op_errstr = NULL;
+
+ ret = -1;
+ }
+
+ return ret;
+}
+
+int
+glusterd_pre_validate_aggr_rsp_dict (glusterd_op_t op,
+ dict_t *aggr, dict_t *rsp)
+{
+ int32_t ret = 0;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (aggr);
+ GF_ASSERT (rsp);
+
+ switch (op) {
+ case GD_OP_SNAP:
+ ret = glusterd_snap_pre_validate_use_rsp_dict (aggr, rsp);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to aggregate prevalidate "
+ "response dictionaries.");
+ goto out;
+ }
+ break;
+ default:
+ ret = -1;
+ gf_log (this->name, GF_LOG_ERROR, "Invalid op (%s)",
+ gd_op_list[op]);
+
+ break;
+ }
+out:
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_pre_validate_cbk_fn (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ int32_t ret = -1;
+ struct syncargs *args = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ gd1_mgmt_v3_pre_val_rsp rsp = {{0},};
+ call_frame_t *frame = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = -1;
+ dict_t *rsp_dict = NULL;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (myframe);
+
+ frame = myframe;
+ args = frame->local;
+ peerinfo = frame->cookie;
+ frame->local = NULL;
+ frame->cookie = NULL;
+
+ if (-1 == req->rpc_status) {
+ op_errno = ENOTCONN;
+ goto out;
+ }
+
+ if (!iov) {
+ gf_log (this->name, GF_LOG_ERROR, "iov is NULL");
+ op_errno = EINVAL;
+ }
+
+ ret = xdr_to_generic (*iov, &rsp,
+ (xdrproc_t)xdr_gd1_mgmt_v3_pre_val_rsp);
+ if (ret < 0)
+ goto out;
+
+ if (rsp.dict.dict_len) {
+ /* Unserialize the dictionary */
+ rsp_dict = dict_new ();
+
+ ret = dict_unserialize (rsp.dict.dict_val,
+ rsp.dict.dict_len,
+ &rsp_dict);
+ if (ret < 0) {
+ free (rsp.dict.dict_val);
+ goto out;
+ } else {
+ rsp_dict->extra_stdfree = rsp.dict.dict_val;
+ }
+ }
+
+ uuid_copy (args->uuid, rsp.uuid);
+ pthread_mutex_lock (&args->lock_dict);
+ {
+ ret = glusterd_pre_validate_aggr_rsp_dict (rsp.op, args->dict,
+ rsp_dict);
+ }
+ pthread_mutex_unlock (&args->lock_dict);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "%s",
+ "Failed to aggregate response from "
+ " node/brick");
+ if (!rsp.op_ret)
+ op_ret = ret;
+ else {
+ op_ret = rsp.op_ret;
+ op_errno = rsp.op_errno;
+ }
+ } else {
+ op_ret = rsp.op_ret;
+ op_errno = rsp.op_errno;
+ }
+
+out:
+ if (rsp_dict)
+ dict_unref (rsp_dict);
+
+ gd_mgmt_v3_collate_errors (args, op_ret, op_errno, NULL,
+ GLUSTERD_MGMT_V3_PRE_VALIDATE,
+ peerinfo, rsp.uuid);
+
+ if (rsp.op_errstr)
+ free (rsp.op_errstr);
+
+ STACK_DESTROY (frame->root);
+ synctask_barrier_wake(args);
+ return 0;
+}
+
+int32_t
+gd_mgmt_v3_pre_validate_cbk (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ return glusterd_big_locked_cbk (req, iov, count, myframe,
+ gd_mgmt_v3_pre_validate_cbk_fn);
+}
+
+int
+gd_mgmt_v3_pre_validate_req (glusterd_op_t op, dict_t *op_ctx,
+ glusterd_peerinfo_t *peerinfo,
+ struct syncargs *args, uuid_t my_uuid,
+ uuid_t recv_uuid)
+{
+ int32_t ret = -1;
+ gd1_mgmt_v3_pre_val_req req = {{0},};
+ glusterd_conf_t *conf = THIS->private;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (op_ctx);
+ GF_ASSERT (peerinfo);
+ GF_ASSERT (args);
+
+ ret = dict_allocate_and_serialize (op_ctx,
+ &req.dict.dict_val,
+ &req.dict.dict_len);
+ if (ret)
+ goto out;
+
+ uuid_copy (req.uuid, my_uuid);
+ req.op = op;
+ synclock_unlock (&conf->big_lock);
+ ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, peerinfo,
+ &gd_mgmt_v3_prog,
+ GLUSTERD_MGMT_V3_PRE_VALIDATE,
+ gd_mgmt_v3_pre_validate_cbk,
+ (xdrproc_t) xdr_gd1_mgmt_v3_pre_val_req);
+ synclock_lock (&conf->big_lock);
+out:
+ GF_FREE (req.dict.dict_val);
+ gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);
+ return ret;
+}
+
+int
+glusterd_mgmt_v3_pre_validate (glusterd_conf_t *conf, glusterd_op_t op,
+ dict_t *req_dict, char **op_errstr, int npeers)
+{
+ int32_t ret = -1;
+ int32_t peer_cnt = 0;
+ dict_t *rsp_dict = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ struct syncargs args = {0};
+ struct list_head *peers = NULL;
+ uuid_t peer_uuid = {0};
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (conf);
+ GF_ASSERT (req_dict);
+ GF_ASSERT (op_errstr);
+
+ peers = &conf->xaction_peers;
+
+ rsp_dict = dict_new ();
+ if (!rsp_dict) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to create response dictionary");
+ goto out;
+ }
+
+ /* Pre Validation on local node */
+ ret = gd_mgmt_v3_pre_validate_fn (op, req_dict, op_errstr,
+ rsp_dict);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Pre Validation failed for "
+ "operation %s on local node",
+ gd_op_list[op]);
+
+ if (*op_errstr == NULL) {
+ ret = gf_asprintf (op_errstr,
+ "Pre-validation failed "
+ "on localhost. Please "
+ "check log file for details");
+ if (ret == -1)
+ *op_errstr = NULL;
+
+ ret = -1;
+ }
+ goto out;
+ }
+
+ ret = glusterd_pre_validate_aggr_rsp_dict (op, req_dict,
+ rsp_dict);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "%s",
+ "Failed to aggregate response from "
+ " node/brick");
+ goto out;
+ }
+
+ dict_unref (rsp_dict);
+ rsp_dict = NULL;
+
+ if (!npeers) {
+ ret = 0;
+ goto out;
+ }
+
+ /* Sending Pre Validation req to other nodes in the cluster */
+ gd_syncargs_init (&args, req_dict);
+ synctask_barrier_init((&args));
+ peer_cnt = 0;
+ list_for_each_entry (peerinfo, peers, op_peers_list) {
+ gd_mgmt_v3_pre_validate_req (op, req_dict, peerinfo, &args,
+ MY_UUID, peer_uuid);
+ peer_cnt++;
+ }
+ gd_synctask_barrier_wait((&args), peer_cnt);
+
+ if (args.op_ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Pre Validation failed on peers");
+
+ if (args.errstr)
+ *op_errstr = gf_strdup (args.errstr);
+ }
+
+ ret = args.op_ret;
+
+ gf_log (this->name, GF_LOG_DEBUG, "Sent pre valaidation req for %s "
+ "to %d peers. Returning %d", gd_op_list[op], peer_cnt, ret);
+out:
+ return ret;
+}
+
+int
+glusterd_mgmt_v3_build_payload (dict_t **req, char **op_errstr, dict_t *dict,
+ glusterd_op_t op)
+{
+ int32_t ret = -1;
+ dict_t *req_dict = NULL;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (op_errstr);
+ GF_ASSERT (dict);
+
+ req_dict = dict_new ();
+ if (!req_dict)
+ goto out;
+
+ switch (op) {
+ case GD_OP_SNAP:
+ dict_copy (dict, req_dict);
+ break;
+ default:
+ break;
+ }
+
+ *req = req_dict;
+ ret = 0;
+out:
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_brick_op_cbk_fn (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ int32_t ret = -1;
+ struct syncargs *args = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ gd1_mgmt_v3_brick_op_rsp rsp = {{0},};
+ call_frame_t *frame = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (myframe);
+
+ frame = myframe;
+ args = frame->local;
+ peerinfo = frame->cookie;
+ frame->local = NULL;
+ frame->cookie = NULL;
+
+ /* If the operation failed, then iov can be NULL. So better check the
+ status of the operation and then worry about iov (if the status of
+ the command is success)
+ */
+ if (-1 == req->rpc_status) {
+ op_errno = ENOTCONN;
+ goto out;
+ }
+
+ if (!iov) {
+ gf_log (this->name, GF_LOG_ERROR, "iov is NULL");
+ op_errno = EINVAL;
+ goto out;
+ }
+
+ ret = xdr_to_generic (*iov, &rsp,
+ (xdrproc_t)xdr_gd1_mgmt_v3_brick_op_rsp);
+ if (ret < 0)
+ goto out;
+
+ uuid_copy (args->uuid, rsp.uuid);
+
+ op_ret = rsp.op_ret;
+ op_errno = rsp.op_errno;
+
+out:
+ gd_mgmt_v3_collate_errors (args, op_ret, op_errno, NULL,
+ GLUSTERD_MGMT_V3_BRICK_OP,
+ peerinfo, rsp.uuid);
+
+ if (rsp.op_errstr)
+ free (rsp.op_errstr);
+
+ if (rsp.dict.dict_val)
+ free (rsp.dict.dict_val);
+
+ STACK_DESTROY (frame->root);
+ synctask_barrier_wake(args);
+ return 0;
+}
+
+int32_t
+gd_mgmt_v3_brick_op_cbk (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ return glusterd_big_locked_cbk (req, iov, count, myframe,
+ gd_mgmt_v3_brick_op_cbk_fn);
+}
+
+int
+gd_mgmt_v3_brick_op_req (glusterd_op_t op, dict_t *op_ctx,
+ glusterd_peerinfo_t *peerinfo,
+ struct syncargs *args, uuid_t my_uuid,
+ uuid_t recv_uuid)
+{
+ int32_t ret = -1;
+ gd1_mgmt_v3_brick_op_req req = {{0},};
+ glusterd_conf_t *conf = THIS->private;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (op_ctx);
+ GF_ASSERT (peerinfo);
+ GF_ASSERT (args);
+
+ ret = dict_allocate_and_serialize (op_ctx,
+ &req.dict.dict_val,
+ &req.dict.dict_len);
+ if (ret)
+ goto out;
+
+ uuid_copy (req.uuid, my_uuid);
+ req.op = op;
+ synclock_unlock (&conf->big_lock);
+ ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, peerinfo,
+ &gd_mgmt_v3_prog,
+ GLUSTERD_MGMT_V3_BRICK_OP,
+ gd_mgmt_v3_brick_op_cbk,
+ (xdrproc_t) xdr_gd1_mgmt_v3_brick_op_req);
+ synclock_lock (&conf->big_lock);
+out:
+ GF_FREE (req.dict.dict_val);
+ gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);
+ return ret;
+}
+
+int
+glusterd_mgmt_v3_brick_op (glusterd_conf_t *conf, glusterd_op_t op,
+ dict_t *req_dict, char **op_errstr, int npeers)
+{
+ int32_t ret = -1;
+ int32_t peer_cnt = 0;
+ dict_t *rsp_dict = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ struct syncargs args = {0};
+ struct list_head *peers = NULL;
+ uuid_t peer_uuid = {0};
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (conf);
+ GF_ASSERT (req_dict);
+ GF_ASSERT (op_errstr);
+
+ peers = &conf->xaction_peers;
+
+ rsp_dict = dict_new ();
+ if (!rsp_dict) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to create response dictionary");
+ goto out;
+ }
+
+ /* Perform brick op on local node */
+ ret = gd_mgmt_v3_brick_op_fn (op, req_dict, op_errstr,
+ rsp_dict);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Brick ops failed for "
+ "operation %s on local node",
+ gd_op_list[op]);
+
+ if (*op_errstr == NULL) {
+ ret = gf_asprintf (op_errstr,
+ "Brick ops failed "
+ "on localhost. Please "
+ "check log file for details");
+ if (ret == -1)
+ *op_errstr = NULL;
+
+ ret = -1;
+ }
+ goto out;
+ }
+
+ dict_unref (rsp_dict);
+ rsp_dict = NULL;
+
+ if (!npeers) {
+ ret = 0;
+ goto out;
+ }
+
+ /* Sending brick op req to other nodes in the cluster */
+ gd_syncargs_init (&args, NULL);
+ synctask_barrier_init((&args));
+ peer_cnt = 0;
+ list_for_each_entry (peerinfo, peers, op_peers_list) {
+ gd_mgmt_v3_brick_op_req (op, req_dict, peerinfo, &args,
+ MY_UUID, peer_uuid);
+ peer_cnt++;
+ }
+ gd_synctask_barrier_wait((&args), peer_cnt);
+
+ if (args.op_ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Brick ops failed on peers");
+
+ if (args.errstr)
+ *op_errstr = gf_strdup (args.errstr);
+ }
+
+ ret = args.op_ret;
+
+ gf_log (this->name, GF_LOG_DEBUG, "Sent brick op req for %s "
+ "to %d peers. Returning %d", gd_op_list[op], peer_cnt, ret);
+out:
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_commit_cbk_fn (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ int32_t ret = -1;
+ struct syncargs *args = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ gd1_mgmt_v3_commit_rsp rsp = {{0},};
+ call_frame_t *frame = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = -1;
+ dict_t *rsp_dict = NULL;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (myframe);
+
+ frame = myframe;
+ args = frame->local;
+ peerinfo = frame->cookie;
+ frame->local = NULL;
+ frame->cookie = NULL;
+
+ if (-1 == req->rpc_status) {
+ op_errno = ENOTCONN;
+ goto out;
+ }
+
+ if (!iov) {
+ gf_log (this->name, GF_LOG_ERROR, "iov is NULL");
+ op_errno = EINVAL;
+ goto out;
+ }
+
+ ret = xdr_to_generic (*iov, &rsp,
+ (xdrproc_t)xdr_gd1_mgmt_v3_commit_rsp);
+ if (ret < 0)
+ goto out;
+
+ if (rsp.dict.dict_len) {
+ /* Unserialize the dictionary */
+ rsp_dict = dict_new ();
+
+ ret = dict_unserialize (rsp.dict.dict_val,
+ rsp.dict.dict_len,
+ &rsp_dict);
+ if (ret < 0) {
+ free (rsp.dict.dict_val);
+ goto out;
+ } else {
+ rsp_dict->extra_stdfree = rsp.dict.dict_val;
+ }
+ }
+
+ uuid_copy (args->uuid, rsp.uuid);
+ pthread_mutex_lock (&args->lock_dict);
+ {
+ ret = glusterd_syncop_aggr_rsp_dict (rsp.op, args->dict,
+ rsp_dict);
+ }
+ pthread_mutex_unlock (&args->lock_dict);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "%s",
+ "Failed to aggregate response from "
+ " node/brick");
+ if (!rsp.op_ret)
+ op_ret = ret;
+ else {
+ op_ret = rsp.op_ret;
+ op_errno = rsp.op_errno;
+ }
+ } else {
+ op_ret = rsp.op_ret;
+ op_errno = rsp.op_errno;
+ }
+
+out:
+ if (rsp_dict)
+ dict_unref (rsp_dict);
+
+ gd_mgmt_v3_collate_errors (args, op_ret, op_errno, NULL,
+ GLUSTERD_MGMT_V3_COMMIT,
+ peerinfo, rsp.uuid);
+
+ STACK_DESTROY (frame->root);
+ synctask_barrier_wake(args);
+ return 0;
+}
+
+int32_t
+gd_mgmt_v3_commit_cbk (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ return glusterd_big_locked_cbk (req, iov, count, myframe,
+ gd_mgmt_v3_commit_cbk_fn);
+}
+
+int
+gd_mgmt_v3_commit_req (glusterd_op_t op, dict_t *op_ctx,
+ glusterd_peerinfo_t *peerinfo,
+ struct syncargs *args, uuid_t my_uuid,
+ uuid_t recv_uuid)
+{
+ int32_t ret = -1;
+ gd1_mgmt_v3_commit_req req = {{0},};
+ glusterd_conf_t *conf = THIS->private;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (op_ctx);
+ GF_ASSERT (peerinfo);
+ GF_ASSERT (args);
+
+ ret = dict_allocate_and_serialize (op_ctx,
+ &req.dict.dict_val,
+ &req.dict.dict_len);
+ if (ret)
+ goto out;
+
+ uuid_copy (req.uuid, my_uuid);
+ req.op = op;
+ synclock_unlock (&conf->big_lock);
+ ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, peerinfo,
+ &gd_mgmt_v3_prog,
+ GLUSTERD_MGMT_V3_COMMIT,
+ gd_mgmt_v3_commit_cbk,
+ (xdrproc_t) xdr_gd1_mgmt_v3_commit_req);
+ synclock_lock (&conf->big_lock);
+out:
+ GF_FREE (req.dict.dict_val);
+ gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);
+ return ret;
+}
+
+int
+glusterd_mgmt_v3_commit (glusterd_conf_t *conf, glusterd_op_t op,
+ dict_t *op_ctx, dict_t *req_dict,
+ char **op_errstr, int npeers)
+{
+ int32_t ret = -1;
+ int32_t peer_cnt = 0;
+ dict_t *rsp_dict = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ struct syncargs args = {0};
+ struct list_head *peers = NULL;
+ uuid_t peer_uuid = {0};
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (conf);
+ GF_ASSERT (op_ctx);
+ GF_ASSERT (req_dict);
+ GF_ASSERT (op_errstr);
+
+ peers = &conf->xaction_peers;
+
+ rsp_dict = dict_new ();
+ if (!rsp_dict) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to create response dictionary");
+ goto out;
+ }
+
+ /* Commit on local node */
+ ret = gd_mgmt_v3_commit_fn (op, req_dict, op_errstr,
+ rsp_dict);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Commit failed for "
+ "operation %s on local node",
+ gd_op_list[op]);
+
+ if (*op_errstr == NULL) {
+ ret = gf_asprintf (op_errstr,
+ "Commit failed "
+ "on localhost. Please "
+ "check log file for details.");
+ if (ret == -1)
+ *op_errstr = NULL;
+
+ ret = -1;
+ }
+ goto out;
+ }
+
+ ret = glusterd_syncop_aggr_rsp_dict (op, op_ctx,
+ rsp_dict);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "%s",
+ "Failed to aggregate response from "
+ " node/brick");
+ goto out;
+ }
+
+ dict_unref (rsp_dict);
+ rsp_dict = NULL;
+
+ if (!npeers) {
+ ret = 0;
+ goto out;
+ }
+
+ /* Sending commit req to other nodes in the cluster */
+ gd_syncargs_init (&args, op_ctx);
+ synctask_barrier_init((&args));
+ peer_cnt = 0;
+ list_for_each_entry (peerinfo, peers, op_peers_list) {
+ gd_mgmt_v3_commit_req (op, req_dict, peerinfo, &args,
+ MY_UUID, peer_uuid);
+ peer_cnt++;
+ }
+ gd_synctask_barrier_wait((&args), peer_cnt);
+
+ if (args.op_ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Commit failed on peers");
+
+ if (args.errstr)
+ *op_errstr = gf_strdup (args.errstr);
+ }
+
+ ret = args.op_ret;
+
+ gf_log (this->name, GF_LOG_DEBUG, "Sent commit req for %s to %d "
+ "peers. Returning %d", gd_op_list[op], peer_cnt, ret);
+out:
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_post_validate_cbk_fn (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ int32_t ret = -1;
+ struct syncargs *args = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ gd1_mgmt_v3_post_val_rsp rsp = {{0},};
+ call_frame_t *frame = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (myframe);
+
+ frame = myframe;
+ args = frame->local;
+ peerinfo = frame->cookie;
+ frame->local = NULL;
+ frame->cookie = NULL;
+
+ if (-1 == req->rpc_status) {
+ op_errno = ENOTCONN;
+ goto out;
+ }
+
+ if (!iov) {
+ gf_log (this->name, GF_LOG_ERROR, "iov is NULL");
+ op_errno = EINVAL;
+ goto out;
+ }
+
+ ret = xdr_to_generic (*iov, &rsp,
+ (xdrproc_t)xdr_gd1_mgmt_v3_post_val_rsp);
+ if (ret < 0)
+ goto out;
+
+ uuid_copy (args->uuid, rsp.uuid);
+
+ op_ret = rsp.op_ret;
+ op_errno = rsp.op_errno;
+
+out:
+ gd_mgmt_v3_collate_errors (args, op_ret, op_errno, NULL,
+ GLUSTERD_MGMT_V3_POST_VALIDATE,
+ peerinfo, rsp.uuid);
+ if (rsp.op_errstr)
+ free (rsp.op_errstr);
+
+ if (rsp.dict.dict_val)
+ free (rsp.dict.dict_val);
+ STACK_DESTROY (frame->root);
+ synctask_barrier_wake(args);
+ return 0;
+}
+
+int32_t
+gd_mgmt_v3_post_validate_cbk (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ return glusterd_big_locked_cbk (req, iov, count, myframe,
+ gd_mgmt_v3_post_validate_cbk_fn);
+}
+
+int
+gd_mgmt_v3_post_validate_req (glusterd_op_t op, int32_t op_ret, dict_t *op_ctx,
+ glusterd_peerinfo_t *peerinfo,
+ struct syncargs *args, uuid_t my_uuid,
+ uuid_t recv_uuid)
+{
+ int32_t ret = -1;
+ gd1_mgmt_v3_post_val_req req = {{0},};
+ glusterd_conf_t *conf = THIS->private;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (op_ctx);
+ GF_ASSERT (peerinfo);
+ GF_ASSERT (args);
+
+ ret = dict_allocate_and_serialize (op_ctx,
+ &req.dict.dict_val,
+ &req.dict.dict_len);
+ if (ret)
+ goto out;
+
+ uuid_copy (req.uuid, my_uuid);
+ req.op = op;
+ req.op_ret = op_ret;
+ synclock_unlock (&conf->big_lock);
+ ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, peerinfo,
+ &gd_mgmt_v3_prog,
+ GLUSTERD_MGMT_V3_POST_VALIDATE,
+ gd_mgmt_v3_post_validate_cbk,
+ (xdrproc_t) xdr_gd1_mgmt_v3_post_val_req);
+ synclock_lock (&conf->big_lock);
+out:
+ GF_FREE (req.dict.dict_val);
+ gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);
+ return ret;
+}
+
+int
+glusterd_mgmt_v3_post_validate (glusterd_conf_t *conf, glusterd_op_t op,
+ int32_t op_ret, dict_t *dict, dict_t *req_dict,
+ char **op_errstr, int npeers)
+{
+ int32_t ret = -1;
+ int32_t peer_cnt = 0;
+ dict_t *rsp_dict = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ struct syncargs args = {0};
+ struct list_head *peers = NULL;
+ uuid_t peer_uuid = {0};
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (conf);
+ GF_ASSERT (dict);
+ GF_ASSERT (req_dict);
+ GF_ASSERT (op_errstr);
+
+ peers = &conf->xaction_peers;
+ GF_ASSERT (peers);
+
+ rsp_dict = dict_new ();
+ if (!rsp_dict) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to create response dictionary");
+ goto out;
+ }
+
+ /* Copy the contents of dict like missed snaps info to req_dict */
+ dict_copy (dict, req_dict);
+
+ /* Post Validation on local node */
+ ret = gd_mgmt_v3_post_validate_fn (op, op_ret, req_dict, op_errstr,
+ rsp_dict);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Post Validation failed for "
+ "operation %s on local node",
+ gd_op_list[op]);
+
+ if (*op_errstr == NULL) {
+ ret = gf_asprintf (op_errstr,
+ "Post-validation failed "
+ "on localhost. Please check "
+ "log file for details");
+ if (ret == -1)
+ *op_errstr = NULL;
+
+ ret = -1;
+ }
+ goto out;
+ }
+
+ dict_unref (rsp_dict);
+ rsp_dict = NULL;
+
+ if (!npeers) {
+ ret = 0;
+ goto out;
+ }
+
+ /* Sending Post Validation req to other nodes in the cluster */
+ gd_syncargs_init (&args, req_dict);
+ synctask_barrier_init((&args));
+ peer_cnt = 0;
+ list_for_each_entry (peerinfo, peers, op_peers_list) {
+ gd_mgmt_v3_post_validate_req (op, op_ret, req_dict, peerinfo,
+ &args, MY_UUID, peer_uuid);
+ peer_cnt++;
+ }
+ gd_synctask_barrier_wait((&args), peer_cnt);
+
+ if (args.op_ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Post Validation failed on peers");
+
+ if (args.errstr)
+ *op_errstr = gf_strdup (args.errstr);
+ }
+
+ ret = args.op_ret;
+
+ gf_log (this->name, GF_LOG_DEBUG, "Sent post valaidation req for %s "
+ "to %d peers. Returning %d", gd_op_list[op], peer_cnt, ret);
+out:
+ return ret;
+}
+
+int32_t
+gd_mgmt_v3_unlock_cbk_fn (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ int32_t ret = -1;
+ struct syncargs *args = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ gd1_mgmt_v3_unlock_rsp rsp = {{0},};
+ call_frame_t *frame = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (myframe);
+
+ frame = myframe;
+ args = frame->local;
+ peerinfo = frame->cookie;
+ frame->local = NULL;
+ frame->cookie = NULL;
+
+ if (-1 == req->rpc_status) {
+ op_errno = ENOTCONN;
+ goto out;
+ }
+
+ if (!iov) {
+ gf_log (this->name, GF_LOG_ERROR, "iov is NULL");
+ op_errno = EINVAL;
+ goto out;
+ }
+
+ ret = xdr_to_generic (*iov, &rsp,
+ (xdrproc_t)xdr_gd1_mgmt_v3_unlock_rsp);
+ if (ret < 0)
+ goto out;
+
+ uuid_copy (args->uuid, rsp.uuid);
+
+ op_ret = rsp.op_ret;
+ op_errno = rsp.op_errno;
+
+out:
+ gd_mgmt_v3_collate_errors (args, op_ret, op_errno, NULL,
+ GLUSTERD_MGMT_V3_UNLOCK,
+ peerinfo, rsp.uuid);
+ if (rsp.dict.dict_val)
+ free (rsp.dict.dict_val);
+ STACK_DESTROY (frame->root);
+ synctask_barrier_wake(args);
+ return 0;
+}
+
+int32_t
+gd_mgmt_v3_unlock_cbk (struct rpc_req *req, struct iovec *iov,
+ int count, void *myframe)
+{
+ return glusterd_big_locked_cbk (req, iov, count, myframe,
+ gd_mgmt_v3_unlock_cbk_fn);
+}
+
+int
+gd_mgmt_v3_unlock (glusterd_op_t op, dict_t *op_ctx,
+ glusterd_peerinfo_t *peerinfo,
+ struct syncargs *args, uuid_t my_uuid,
+ uuid_t recv_uuid)
+{
+ int32_t ret = -1;
+ gd1_mgmt_v3_unlock_req req = {{0},};
+ glusterd_conf_t *conf = THIS->private;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (op_ctx);
+ GF_ASSERT (peerinfo);
+ GF_ASSERT (args);
+
+ ret = dict_allocate_and_serialize (op_ctx,
+ &req.dict.dict_val,
+ &req.dict.dict_len);
+ if (ret)
+ goto out;
+
+ uuid_copy (req.uuid, my_uuid);
+ req.op = op;
+ synclock_unlock (&conf->big_lock);
+ ret = gd_syncop_submit_request (peerinfo->rpc, &req, args, peerinfo,
+ &gd_mgmt_v3_prog,
+ GLUSTERD_MGMT_V3_UNLOCK,
+ gd_mgmt_v3_unlock_cbk,
+ (xdrproc_t) xdr_gd1_mgmt_v3_unlock_req);
+ synclock_lock (&conf->big_lock);
+out:
+ GF_FREE (req.dict.dict_val);
+ gf_log (this->name, GF_LOG_TRACE, "Returning %d", ret);
+ return ret;
+}
+
+int
+glusterd_mgmt_v3_release_peer_locks (glusterd_conf_t *conf, glusterd_op_t op,
+ dict_t *dict, int32_t op_ret,
+ char **op_errstr, int npeers,
+ gf_boolean_t is_acquired)
+{
+ int32_t ret = -1;
+ int32_t peer_cnt = 0;
+ uuid_t peer_uuid = {0};
+ xlator_t *this = NULL;
+ glusterd_peerinfo_t *peerinfo = NULL;
+ struct syncargs args = {0};
+ struct list_head *peers = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (conf);
+ GF_ASSERT (dict);
+ GF_ASSERT (op_errstr);
+
+ peers = &conf->xaction_peers;
+
+ /* If the lock has not been held during this
+ * transaction, do not send unlock requests */
+ if (!is_acquired)
+ goto out;
+
+ if (!npeers) {
+ ret = 0;
+ goto out;
+ }
+
+ /* Sending mgmt_v3 unlock req to other nodes in the cluster */
+ gd_syncargs_init (&args, NULL);
+ synctask_barrier_init((&args));
+ peer_cnt = 0;
+ list_for_each_entry (peerinfo, peers, op_peers_list) {
+ gd_mgmt_v3_unlock (op, dict, peerinfo, &args,
+ MY_UUID, peer_uuid);
+ peer_cnt++;
+ }
+ gd_synctask_barrier_wait((&args), peer_cnt);
+
+ if (args.op_ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Unlock failed on peers");
+
+ if (!op_ret && args.errstr)
+ *op_errstr = gf_strdup (args.errstr);
+ }
+
+ ret = args.op_ret;
+
+ gf_log (this->name, GF_LOG_DEBUG, "Sent unlock op req for %s "
+ "to %d peers. Returning %d", gd_op_list[op], peer_cnt, ret);
+
+out:
+ return ret;
+}
+
+int32_t
+glusterd_mgmt_v3_initiate_all_phases (rpcsvc_request_t *req, glusterd_op_t op,
+ dict_t *dict)
+{
+ int32_t ret = -1;
+ int32_t op_ret = -1;
+ int32_t npeers = 0;
+ dict_t *req_dict = NULL;
+ dict_t *tmp_dict = NULL;
+ glusterd_conf_t *conf = NULL;
+ char *op_errstr = NULL;
+ xlator_t *this = NULL;
+ gf_boolean_t is_acquired = _gf_false;
+ uuid_t *originator_uuid = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (dict);
+ conf = this->private;
+ GF_ASSERT (conf);
+
+ /* Save the MY_UUID as the originator_uuid. This originator_uuid
+ * will be used by is_origin_glusterd() to determine if a node
+ * is the originator node for a command. */
+ originator_uuid = GF_CALLOC (1, sizeof(uuid_t),
+ gf_common_mt_uuid_t);
+ if (!originator_uuid) {
+ ret = -1;
+ goto out;
+ }
+
+ uuid_copy (*originator_uuid, MY_UUID);
+ ret = dict_set_bin (dict, "originator_uuid",
+ originator_uuid, sizeof (uuid_t));
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to set originator_uuid.");
+ goto out;
+ }
+
+ /* Marking the operation as complete synctasked */
+ ret = dict_set_int32 (dict, "is_synctasked", _gf_true);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to set synctasked flag.");
+ goto out;
+ }
+
+ /* Use a copy at local unlock as cli response will be sent before
+ * the unlock and the volname in the dict might be removed */
+ tmp_dict = dict_new();
+ if (!tmp_dict) {
+ gf_log (this->name, GF_LOG_ERROR, "Unable to create dict");
+ goto out;
+ }
+ dict_copy (dict, tmp_dict);
+
+ /* BUILD PEERS LIST */
+ INIT_LIST_HEAD (&conf->xaction_peers);
+ npeers = gd_build_peers_list (&conf->peers, &conf->xaction_peers, op);
+
+ /* LOCKDOWN PHASE - Acquire mgmt_v3 locks */
+ ret = glusterd_mgmt_v3_initiate_lockdown (conf, op, dict, &op_errstr,
+ npeers, &is_acquired);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "mgmt_v3 lockdown failed.");
+ goto out;
+ }
+
+ /* BUILD PAYLOAD */
+ ret = glusterd_mgmt_v3_build_payload (&req_dict, &op_errstr, dict, op);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, LOGSTR_BUILD_PAYLOAD,
+ gd_op_list[op]);
+ if (op_errstr == NULL)
+ gf_asprintf (&op_errstr, OPERRSTR_BUILD_PAYLOAD);
+ goto out;
+ }
+
+ /* PRE-COMMIT VALIDATE PHASE */
+ ret = glusterd_mgmt_v3_pre_validate (conf, op, req_dict,
+ &op_errstr, npeers);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Pre Validation Failed");
+ goto out;
+ }
+
+ /* COMMIT OP PHASE */
+ ret = glusterd_mgmt_v3_commit (conf, op, dict, req_dict,
+ &op_errstr, npeers);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Commit Op Failed");
+ goto out;
+ }
+
+ /* POST-COMMIT VALIDATE PHASE */
+ /* As of now, post_validate is not handling any other
+ commands other than snapshot. So as of now, I am
+ sending 0 (op_ret as 0).
+ */
+ ret = glusterd_mgmt_v3_post_validate (conf, op, 0, dict, req_dict,
+ &op_errstr, npeers);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Post Validation Failed");
+ goto out;
+ }
+
+ ret = 0;
+out:
+ op_ret = ret;
+ /* UNLOCK PHASE FOR PEERS*/
+ (void) glusterd_mgmt_v3_release_peer_locks (conf, op, dict,
+ op_ret, &op_errstr,
+ npeers, is_acquired);
+
+ /* LOCAL VOLUME(S) UNLOCK */
+ if (is_acquired) {
+ /* Trying to release multiple mgmt_v3 locks */
+ ret = glusterd_multiple_mgmt_v3_unlock (tmp_dict, MY_UUID);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to release mgmt_v3 locks on localhost");
+ op_ret = ret;
+ }
+ }
+
+ /* SEND CLI RESPONSE */
+ glusterd_op_send_cli_response (op, op_ret, 0, req, dict, op_errstr);
+
+ if (req_dict)
+ dict_unref (req_dict);
+
+ if (tmp_dict)
+ dict_unref (tmp_dict);
+
+ if (op_errstr) {
+ GF_FREE (op_errstr);
+ op_errstr = NULL;
+ }
+
+ return 0;
+}
+
+int32_t
+glusterd_mgmt_v3_initiate_snap_phases (rpcsvc_request_t *req, glusterd_op_t op,
+ dict_t *dict)
+{
+ int32_t ret = -1;
+ int32_t op_ret = -1;
+ int32_t npeers = 0;
+ dict_t *req_dict = NULL;
+ dict_t *tmp_dict = NULL;
+ glusterd_conf_t *conf = NULL;
+ char *op_errstr = NULL;
+ xlator_t *this = NULL;
+ gf_boolean_t is_acquired = _gf_false;
+ uuid_t *originator_uuid = NULL;
+ gf_boolean_t success = _gf_false;
+ char *tmp_errstr = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (req);
+ GF_ASSERT (dict);
+ conf = this->private;
+ GF_ASSERT (conf);
+
+ /* Save the MY_UUID as the originator_uuid. This originator_uuid
+ * will be used by is_origin_glusterd() to determine if a node
+ * is the originator node for a command. */
+ originator_uuid = GF_CALLOC (1, sizeof(uuid_t),
+ gf_common_mt_uuid_t);
+ if (!originator_uuid) {
+ ret = -1;
+ goto out;
+ }
+
+ uuid_copy (*originator_uuid, MY_UUID);
+ ret = dict_set_bin (dict, "originator_uuid",
+ originator_uuid, sizeof (uuid_t));
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to set originator_uuid.");
+ goto out;
+ }
+
+ /* Marking the operation as complete synctasked */
+ ret = dict_set_int32 (dict, "is_synctasked", _gf_true);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to set synctasked flag.");
+ goto out;
+ }
+
+ /* Use a copy at local unlock as cli response will be sent before
+ * the unlock and the volname in the dict might be removed */
+ tmp_dict = dict_new();
+ if (!tmp_dict) {
+ gf_log (this->name, GF_LOG_ERROR, "Unable to create dict");
+ goto out;
+ }
+ dict_copy (dict, tmp_dict);
+
+ /* BUILD PEERS LIST */
+ INIT_LIST_HEAD (&conf->xaction_peers);
+ npeers = gd_build_peers_list (&conf->peers, &conf->xaction_peers, op);
+
+ /* LOCKDOWN PHASE - Acquire mgmt_v3 locks */
+ ret = glusterd_mgmt_v3_initiate_lockdown (conf, op, dict, &op_errstr,
+ npeers, &is_acquired);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "mgmt_v3 lockdown failed.");
+ goto out;
+ }
+
+ /* BUILD PAYLOAD */
+ ret = glusterd_mgmt_v3_build_payload (&req_dict, &op_errstr, dict, op);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, LOGSTR_BUILD_PAYLOAD,
+ gd_op_list[op]);
+ if (op_errstr == NULL)
+ gf_asprintf (&op_errstr, OPERRSTR_BUILD_PAYLOAD);
+ goto out;
+ }
+
+ /* PRE-COMMIT VALIDATE PHASE */
+ ret = glusterd_mgmt_v3_pre_validate (conf, op, req_dict,
+ &op_errstr, npeers);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Pre Validation Failed");
+ goto out;
+ }
+
+ /* BRICK OP PHASE for initiating barrier*/
+ ret = dict_set_int32 (req_dict, "barrier", 1);
+ if (ret)
+ goto out;
+ ret = glusterd_mgmt_v3_brick_op (conf, op, req_dict,
+ &op_errstr, npeers);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Brick Ops Failed");
+ goto unbarrier;
+ }
+
+ /* COMMIT OP PHASE */
+ /* TODO: As of now, the plan is to do quorum check before sending the
+ commit fop and if the quorum succeeds, then commit is sent to all
+ the other glusterds.
+ snap create functionality now creates the in memory and on disk
+ objects for the snapshot (marking them as incomplete), takes the lvm
+ snapshot and then updates the status of the in memory and on disk
+ snap objects as complete. Suppose one of the glusterds goes down
+ after taking the lvm snapshot, but before updating the snap object,
+ then treat it as a snapshot create failure and trigger cleanup.
+ i.e the number of commit responses received by the originator
+ glusterd shold be the same as the number of peers it has sent the
+ request to (i.e npeers variable). If not, then originator glusterd
+ will initiate cleanup in post-validate fop.
+ Question: What if one of the other glusterds goes down as explained
+ above and along with it the originator glusterd also goes down?
+ Who will initiate the cleanup?
+ */
+ ret = glusterd_mgmt_v3_commit (conf, op, dict, req_dict,
+ &op_errstr, npeers);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Commit Op Failed");
+ /* If the main op fails, we should save the error string.
+ Because, op_errstr will be used for unbarrier and
+ unlock ops also. We might lose the actual error that
+ caused the failure.
+ */
+ tmp_errstr = op_errstr;
+ op_errstr = NULL;
+ goto unbarrier;
+ }
+
+ success = _gf_true;
+unbarrier:
+ /* BRICK OP PHASE for removing the barrier*/
+ ret = dict_set_int32 (req_dict, "barrier", 0);
+ if (ret)
+ goto out;
+ ret = glusterd_mgmt_v3_brick_op (conf, op, req_dict,
+ &op_errstr, npeers);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Brick Ops Failed");
+ goto out;
+ }
+
+ ret = 0;
+
+out:
+ op_ret = ret;
+
+ if (success == _gf_false)
+ op_ret = -1;
+
+ /* POST-COMMIT VALIDATE PHASE */
+ ret = glusterd_mgmt_v3_post_validate (conf, op, op_ret, dict, req_dict,
+ &op_errstr, npeers);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Post Validation Failed");
+ op_ret = -1;
+ }
+
+ /* UNLOCK PHASE FOR PEERS*/
+ (void) glusterd_mgmt_v3_release_peer_locks (conf, op, dict,
+ op_ret, &op_errstr,
+ npeers, is_acquired);
+
+ /* If the commit op (snapshot taking) failed, then the error is stored
+ in tmp_errstr and unbarrier is called. Suppose, if unbarrier also
+ fails, then the error happened in unbarrier is logged and freed.
+ The error happened in commit op, which is stored in tmp_errstr
+ is sent to cli.
+ */
+ if (tmp_errstr) {
+ if (op_errstr) {
+ gf_log (this->name, GF_LOG_ERROR, "unbarrier brick op"
+ "failed with the error %s", op_errstr);
+ GF_FREE (op_errstr);
+ op_errstr = NULL;
+ }
+ op_errstr = tmp_errstr;
+ }
+
+ /* LOCAL VOLUME(S) UNLOCK */
+ if (is_acquired) {
+ /* Trying to release multiple mgmt_v3 locks */
+ ret = glusterd_multiple_mgmt_v3_unlock (tmp_dict, MY_UUID);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Failed to release mgmt_v3 locks on localhost");
+ op_ret = ret;
+ }
+ }
+
+ /* SEND CLI RESPONSE */
+ glusterd_op_send_cli_response (op, op_ret, 0, req, dict, op_errstr);
+
+ if (req_dict)
+ dict_unref (req_dict);
+
+ if (tmp_dict)
+ dict_unref (tmp_dict);
+
+ if (op_errstr) {
+ GF_FREE (op_errstr);
+ op_errstr = NULL;
+ }
+
+ return 0;
+}