From e99cb60af1e153efd616014da6a54d2f95c119d1 Mon Sep 17 00:00:00 2001 From: Raghavendra Bhat Date: Wed, 4 Jan 2012 00:08:14 +0530 Subject: glusterd: provide option to take statedump of the nfs server Currently the cli command for taking statedump is for glusterfs servers only. Statedump of nfs server cannot be taken. With this patch if one gives nfs as an option to the statedump command, then the nfs-server's statedump is taken. Change-Id: I4ef7a68e608da4aa2f17541d7b42cd78ce2624b6 BUG: 771587 Signed-off-by: Raghavendra Bhat Reviewed-on: http://review.gluster.com/2579 Tested-by: Gluster Build System Reviewed-by: Amar Tumballi Reviewed-by: Vijay Bellur --- xlators/mgmt/glusterd/src/glusterd-op-sm.c | 2 +- xlators/mgmt/glusterd/src/glusterd-utils.c | 104 ++++++++++++++++++++++-- xlators/mgmt/glusterd/src/glusterd-utils.h | 5 +- xlators/mgmt/glusterd/src/glusterd-volume-ops.c | 16 +++- xlators/mgmt/glusterd/src/glusterd.h | 10 ++- 5 files changed, 124 insertions(+), 13 deletions(-) (limited to 'xlators') diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.c b/xlators/mgmt/glusterd/src/glusterd-op-sm.c index 38d73b1f7..f24cb9b13 100644 --- a/xlators/mgmt/glusterd/src/glusterd-op-sm.c +++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.c @@ -2459,7 +2459,7 @@ glusterd_op_commit_perform (glusterd_op_t op, dict_t *dict, char **op_errstr, break; case GD_OP_STATEDUMP_VOLUME: - ret = glusterd_op_statedump_volume (dict); + ret = glusterd_op_statedump_volume (dict, op_errstr); break; default: diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c index efc7069d8..c0462d9c7 100644 --- a/xlators/mgmt/glusterd/src/glusterd-utils.c +++ b/xlators/mgmt/glusterd/src/glusterd-utils.c @@ -4532,13 +4532,15 @@ int glusterd_set_dump_options (char *dumpoptions_path, char *options, int option_cnt) { - int ret = -1; + int ret = 0; char *dup_options = NULL; char *option = NULL; char *tmpptr = NULL; FILE *fp = NULL; + int nfs_cnt = 0; - if (0 == option_cnt) { + if (0 == option_cnt || + (option_cnt == 1 && (!strcmp (options, "nfs ")))) { ret = 0; goto out; } @@ -4553,6 +4555,16 @@ glusterd_set_dump_options (char *dumpoptions_path, char *options, dup_options); option = strtok_r (dup_options, " ", &tmpptr); while (option) { + if (!strcmp (option, "nfs")) { + if (nfs_cnt > 0) { + unlink (dumpoptions_path); + ret = 0; + goto out; + } + nfs_cnt++; + option = strtok_r (NULL, " ", &tmpptr); + continue; + } fprintf (fp, "%s=yes\n", option); option = strtok_r (NULL, " ", &tmpptr); } @@ -4560,13 +4572,15 @@ glusterd_set_dump_options (char *dumpoptions_path, char *options, out: if (fp) fclose (fp); + if (dup_options) + GF_FREE (dup_options); return ret; } int glusterd_brick_statedump (glusterd_volinfo_t *volinfo, glusterd_brickinfo_t *brickinfo, - char *options, int option_cnt) + char *options, int option_cnt, char **op_errstr) { int ret = -1; xlator_t *this = NULL; @@ -4618,8 +4632,13 @@ glusterd_brick_statedump (glusterd_volinfo_t *volinfo, snprintf (dumpoptions_path, sizeof (dumpoptions_path), "/tmp/glusterdump.%d.options", pid); - glusterd_set_dump_options (dumpoptions_path, options, option_cnt); - + ret = glusterd_set_dump_options (dumpoptions_path, options, option_cnt); + if (ret < 0) { + gf_log ("", GF_LOG_ERROR, "error while parsing the statedump " + "options"); + ret = -1; + goto out; + } gf_log ("", GF_LOG_INFO, "Performing statedump on brick with pid %d", pid); @@ -4627,12 +4646,87 @@ glusterd_brick_statedump (glusterd_volinfo_t *volinfo, kill (pid, SIGUSR1); sleep (1); + ret = 0; +out: unlink (dumpoptions_path); + if (pidfile) + fclose (pidfile); + return ret; +} + +int +glusterd_nfs_statedump (char *options, int option_cnt, char **op_errstr) +{ + int ret = -1; + xlator_t *this = NULL; + glusterd_conf_t *conf = NULL; + char pidfile_path[PATH_MAX] = {0,}; + char path[PATH_MAX] = {0,}; + FILE *pidfile = NULL; + pid_t pid = -1; + char dumpoptions_path[PATH_MAX] = {0,}; + char *option = NULL; + char *tmpptr = NULL; + char *dup_options = NULL; + char msg[256] = {0,}; + + this = THIS; + GF_ASSERT (this); + conf = this->private; + GF_ASSERT (conf); + + dup_options = gf_strdup (options); + option = strtok_r (dup_options, " ", &tmpptr); + if (strcmp (option, "nfs")) { + snprintf (msg, sizeof (msg), "for nfs statedump, options should" + " be after the key nfs"); + *op_errstr = gf_strdup (msg); + ret = -1; + goto out; + } + + GLUSTERD_GET_NFS_DIR (path, conf); + GLUSTERD_GET_NFS_PIDFILE (pidfile_path, path); + + pidfile = fopen (pidfile_path, "r"); + if (!pidfile) { + gf_log ("", GF_LOG_ERROR, "Unable to open pidfile: %s", + pidfile_path); + ret = -1; + goto out; + } + + ret = fscanf (pidfile, "%d", &pid); + if (ret <= 0) { + gf_log ("", GF_LOG_ERROR, "Unable to get pid of brick process"); + ret = -1; + goto out; + } + + snprintf (dumpoptions_path, sizeof (dumpoptions_path), + "/tmp/glusterdump.%d.options", pid); + ret = glusterd_set_dump_options (dumpoptions_path, options, option_cnt); + if (ret < 0) { + gf_log ("", GF_LOG_ERROR, "error while parsing the statedump " + "options"); + ret = -1; + goto out; + } + + gf_log ("", GF_LOG_INFO, "Performing statedump on nfs server with " + "pid %d", pid); + + kill (pid, SIGUSR1); + + sleep (1); ret = 0; out: if (pidfile) fclose (pidfile); + unlink (dumpoptions_path); + if (dup_options) + GF_FREE (dup_options); return ret; } diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.h b/xlators/mgmt/glusterd/src/glusterd-utils.h index 13ac02601..ba1b8f678 100644 --- a/xlators/mgmt/glusterd/src/glusterd-utils.h +++ b/xlators/mgmt/glusterd/src/glusterd-utils.h @@ -372,8 +372,9 @@ glusterd_is_fuse_available (); int glusterd_brick_statedump (glusterd_volinfo_t *volinfo, glusterd_brickinfo_t *brickinfo, - char *options, int option_cnt); - + char *options, int option_cnt, char **op_errstr); +int +glusterd_nfs_statedump (char *options, int option_cnt, char **op_errstr); gf_boolean_t glusterd_is_volume_replicate (glusterd_volinfo_t *volinfo); gf_boolean_t diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-ops.c b/xlators/mgmt/glusterd/src/glusterd-volume-ops.c index e3971a276..1389f78f9 100644 --- a/xlators/mgmt/glusterd/src/glusterd-volume-ops.c +++ b/xlators/mgmt/glusterd/src/glusterd-volume-ops.c @@ -1383,7 +1383,7 @@ glusterd_op_heal_volume (dict_t *dict, char **op_errstr) } int -glusterd_op_statedump_volume (dict_t *dict) +glusterd_op_statedump_volume (dict_t *dict, char **op_errstr) { int ret = 0; char *volname = NULL; @@ -1401,11 +1401,19 @@ glusterd_op_statedump_volume (dict_t *dict) if (ret) goto out; gf_log ("", GF_LOG_DEBUG, "Performing statedump on volume %s", volname); - list_for_each_entry (brickinfo, &volinfo->bricks, brick_list) { - ret = glusterd_brick_statedump (volinfo, brickinfo, options, - option_cnt); + if (strstr (options, "nfs") != NULL) { + ret = glusterd_nfs_statedump (options, option_cnt, op_errstr); if (ret) goto out; + } else { + list_for_each_entry (brickinfo, &volinfo->bricks, + brick_list) { + ret = glusterd_brick_statedump (volinfo, brickinfo, + options, option_cnt, + op_errstr); + if (ret) + goto out; + } } out: diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h index 7cd34a008..fe2402ec2 100644 --- a/xlators/mgmt/glusterd/src/glusterd.h +++ b/xlators/mgmt/glusterd/src/glusterd.h @@ -284,6 +284,9 @@ typedef ssize_t (*gd_serialize_t) (struct iovec outmsg, void *args); GLUSTERD_VOLUME_DIR_PREFIX, volinfo->volname, \ GLUSTERD_BRICK_INFO_DIR); +#define GLUSTERD_GET_NFS_DIR(path, priv) \ + snprintf (path, PATH_MAX, "%s/nfs", priv->workdir); + #define GLUSTERD_REMOVE_SLASH_FROM_PATH(path,string) do { \ int i = 0; \ for (i = 1; i < strlen (path); i++) { \ @@ -300,6 +303,11 @@ typedef ssize_t (*gd_serialize_t) (struct iovec outmsg, void *args); volpath, hostname, exp_path); \ } +#define GLUSTERD_GET_NFS_PIDFILE(pidfile,nfspath) { \ + snprintf (pidfile, PATH_MAX, "%s/run/nfs.pid", \ + nfspath); \ + } + #define GLUSTERD_STACK_DESTROY(frame) do {\ frame->local = NULL; \ STACK_DESTROY (frame->root);\ @@ -565,7 +573,7 @@ int glusterd_op_stage_rebalance (dict_t *dict, char **op_errstr); int glusterd_op_rebalance (dict_t *dict, char **op_errstr, dict_t *rsp_dict); int glusterd_op_stage_statedump_volume (dict_t *dict, char **op_errstr); -int glusterd_op_statedump_volume (dict_t *dict); +int glusterd_op_statedump_volume (dict_t *dict, char **op_errstr); /* misc */ void glusterd_do_replace_brick (void *data); -- cgit