diff options
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-snapshot.c')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-snapshot.c | 333 |
1 files changed, 293 insertions, 40 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-snapshot.c b/xlators/mgmt/glusterd/src/glusterd-snapshot.c index 9c64fe2d61a..73723422bc7 100644 --- a/xlators/mgmt/glusterd/src/glusterd-snapshot.c +++ b/xlators/mgmt/glusterd/src/glusterd-snapshot.c @@ -2854,16 +2854,6 @@ glusterd_handle_snapshot_status (rpcsvc_request_t *req, glusterd_op_t op, } } - /* Volume lock is not necessary for snapshot status, hence - * turning it off - */ - ret = dict_set_int8 (dict, "hold_vol_locks", 0); - if (ret) { - gf_log (this->name, GF_LOG_ERROR, "Setting volume lock " - "flag failed"); - goto out; - } - ret = glusterd_mgmt_v3_initiate_snap_phases (req, op, dict); if (ret) { gf_log (this->name, GF_LOG_ERROR, "Failed to initiate " @@ -3751,35 +3741,13 @@ glusterd_do_snap_vol (glusterd_volinfo_t *origin_vol, glusterd_snap_t *snap, goto out; } - list_for_each_entry (brickinfo, &snap_vol->bricks, brick_list) { - if (uuid_compare (brickinfo->uuid, MY_UUID)) - continue; + /*Starting the snap volume without GF_CLI_FLAG_OP_FORCE option*/ + ret = glusterd_start_volume (snap_vol, 0); - if (brickinfo->snap_status == -1) { - gf_log (this->name, GF_LOG_INFO, - "not starting snap brick %s:%s for " - "for the snap %s (volume: %s)", - brickinfo->hostname, brickinfo->path, - snap->snapname, origin_vol->volname); - continue; - } - - ret = glusterd_brick_start (snap_vol, brickinfo, _gf_true); - if (ret) { - gf_log (this->name, GF_LOG_WARNING, "starting the " - "brick %s:%s for the snap %s (volume: %s) " - "failed", brickinfo->hostname, brickinfo->path, - snap->snapname, origin_vol->volname); - goto out; - } - } - - snap_vol->status = GLUSTERD_STATUS_STARTED; - ret = glusterd_store_volinfo (snap_vol, - GLUSTERD_VOLINFO_VER_AC_INCREMENT); if (ret) { gf_log (this->name, GF_LOG_ERROR, - "Failed to store snap volinfo"); + "Failed to activate snap volume %s of the snap %s", + snap_vol->volname, snap->snapname); goto out; } @@ -3794,6 +3762,105 @@ out: return snap_vol; } +/*This is the prevalidate function for both activate and deactive of snap + * For Activate operation pass is_op_activate as _gf_true + * For Deactivate operation pass is_op_activate as _gf_false + * */ +int +glusterd_snapshot_activate_deactivate_prevalidate (dict_t *dict, + char **op_errstr, dict_t *rsp_dict, gf_boolean_t is_op_activate) +{ + int32_t ret = -1; + char *snapname = NULL; + xlator_t *this = NULL; + glusterd_snap_t *snap = NULL; + glusterd_volinfo_t *snap_volinfo = NULL; + char err_str[PATH_MAX] = ""; + gf_loglevel_t loglevel = GF_LOG_ERROR; + glusterd_volume_status volume_status = GLUSTERD_STATUS_STOPPED; + int flags = 0; + + this = THIS; + + if (!dict || !op_errstr) { + gf_log (this->name, GF_LOG_ERROR, "input parameters NULL"); + goto out; + } + + ret = dict_get_str (dict, "snapname", &snapname); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Getting the snap name " + "failed"); + goto out; + } + + snap = glusterd_find_snap_by_name (snapname); + if (!snap) { + snprintf (err_str, sizeof (err_str), "Snap %s does not exist.", + snapname); + ret = -1; + goto out; + } + + /*If its activation of snap then fetch the flags*/ + if (is_op_activate) { + ret = dict_get_int32 (dict, "flags", &flags); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Unable to get flags"); + goto out; + } + } + + /* TODO : As of now there is only volume in snapshot. + * Change this when multiple volume snapshot is introduced + */ + snap_volinfo = list_entry (snap->volumes.next, glusterd_volinfo_t, + vol_list); + if (!snap_volinfo) { + gf_log (this->name, GF_LOG_ERROR, + "Unable to fetch snap_volinfo"); + ret = -1; + goto out; + } + + /*TODO: When multiple snapvolume are involved a cummulative + * logic is required to tell whether is snapshot is + * started/partially started/stopped*/ + if (is_op_activate) { + volume_status = GLUSTERD_STATUS_STARTED; + } + + if (snap_volinfo->status == volume_status) { + if (is_op_activate) { + /* if flag is to GF_CLI_FLAG_OP_FORCE + * try to start the snap volume, even + * if the volume_status is GLUSTERD_STATUS_STARTED. + * By doing so we try to bring + * back the brick processes that are down*/ + if (!(flags & GF_CLI_FLAG_OP_FORCE)) { + snprintf (err_str, sizeof (err_str), + "Snap %s is already activated.", snapname); + ret = -1; + } + } else { + snprintf (err_str, sizeof (err_str), + "Snap %s is already deactivated.", snapname); + ret = -1; + } + goto out; + } + ret = 0; +out: + + if (ret && err_str[0] != '\0') { + gf_log (this->name, loglevel, "%s", err_str); + *op_errstr = gf_strdup (err_str); + } + + return ret; +} + /* This is a snapshot remove handler function. This function will be * executed in the originator node. This function is responsible for * calling mgmt v3 framework to do the actual remove on all the bricks @@ -4009,6 +4076,134 @@ out: } int32_t +glusterd_snapshot_activate_commit (dict_t *dict, char **op_errstr, + dict_t *rsp_dict) +{ + int32_t ret = -1; + char *snapname = NULL; + glusterd_snap_t *snap = NULL; + glusterd_volinfo_t *snap_volinfo = NULL; + xlator_t *this = NULL; + int flags = 0; + + this = THIS; + GF_ASSERT (this); + GF_ASSERT (dict); + GF_ASSERT (rsp_dict); + GF_ASSERT (op_errstr); + + if (!dict || !op_errstr) { + gf_log (this->name, GF_LOG_ERROR, "input parameters NULL"); + goto out; + } + + ret = dict_get_str (dict, "snapname", &snapname); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Getting the snap name " + "failed"); + goto out; + } + + ret = dict_get_int32 (dict, "flags", &flags); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Unable to get flags"); + goto out; + } + + snap = glusterd_find_snap_by_name (snapname); + if (!snap) { + gf_log (this->name, GF_LOG_ERROR, "Snap %s does not exist", + snapname); + ret = -1; + goto out; + } + + /* TODO : As of now there is only volume in snapshot. + * Change this when multiple volume snapshot is introduced + */ + snap_volinfo = list_entry (snap->volumes.next, glusterd_volinfo_t, + vol_list); + if (!snap_volinfo) { + gf_log (this->name, GF_LOG_ERROR, + "Unable to fetch snap_volinfo"); + ret = -1; + goto out; + } + + ret = glusterd_start_volume (snap_volinfo, flags); + + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to activate snap volume %s of the snap %s", + snap_volinfo->volname, snap->snapname); + goto out; + } + ret = 0; +out: + return ret; +} + +int32_t +glusterd_snapshot_deactivate_commit (dict_t *dict, char **op_errstr, + dict_t *rsp_dict) +{ + int32_t ret = -1; + char *snapname = NULL; + glusterd_snap_t *snap = NULL; + glusterd_volinfo_t *snap_volinfo = NULL; + xlator_t *this = NULL; + + this = THIS; + GF_ASSERT (this); + GF_ASSERT (dict); + GF_ASSERT (rsp_dict); + GF_ASSERT (op_errstr); + + if (!dict || !op_errstr) { + gf_log (this->name, GF_LOG_ERROR, "input parameters NULL"); + goto out; + } + + ret = dict_get_str (dict, "snapname", &snapname); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Getting the snap name " + "failed"); + goto out; + } + + snap = glusterd_find_snap_by_name (snapname); + if (!snap) { + gf_log (this->name, GF_LOG_ERROR, "Snap %s does not exist", + snapname); + ret = -1; + goto out; + } + + /* TODO : As of now there is only volume in snapshot. + * Change this when multiple volume snapshot is introduced + */ + snap_volinfo = list_entry (snap->volumes.next, glusterd_volinfo_t, + vol_list); + if (!snap_volinfo) { + gf_log (this->name, GF_LOG_ERROR, + "Unable to fetch snap_volinfo"); + ret = -1; + goto out; + } + + ret = glusterd_stop_volume (snap_volinfo); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to deactivate" + "snap %s", snapname); + goto out; + } + + ret = 0; +out: + return ret; +} + +int32_t glusterd_snapshot_remove_commit (dict_t *dict, char **op_errstr, dict_t *rsp_dict) { @@ -5220,6 +5415,27 @@ glusterd_snapshot (dict_t *dict, char **op_errstr, dict_t *rsp_dict) } break; + case GF_SNAP_OPTION_TYPE_ACTIVATE: + ret = glusterd_snapshot_activate_commit (dict, op_errstr, + rsp_dict); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, "Failed to " + "activate snapshot"); + goto out; + } + + break; + + case GF_SNAP_OPTION_TYPE_DEACTIVATE: + ret = glusterd_snapshot_deactivate_commit (dict, op_errstr, + rsp_dict); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, "Failed to " + "deactivate snapshot"); + goto out; + } + + break; case GF_SNAP_OPTION_TYPE_STATUS: ret = glusterd_snapshot_status_commit (dict, op_errstr, @@ -5395,6 +5611,25 @@ glusterd_snapshot_prevalidate (dict_t *dict, char **op_errstr, goto out; } break; + + case GF_SNAP_OPTION_TYPE_ACTIVATE: + ret = glusterd_snapshot_activate_deactivate_prevalidate (dict, + op_errstr, rsp_dict, _gf_true); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, "Snapshot activate " + "validation failed"); + goto out; + } + break; + case GF_SNAP_OPTION_TYPE_DEACTIVATE: + ret = glusterd_snapshot_activate_deactivate_prevalidate (dict, + op_errstr, rsp_dict, _gf_false); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "Snapshot deactivate validation failed"); + goto out; + } + break; case GF_SNAP_OPTION_TYPE_DELETE: ret = glusterd_snapshot_remove_prevalidate (dict, op_errstr, rsp_dict); @@ -5457,7 +5692,6 @@ glusterd_snapshot_postvalidate (dict_t *dict, int32_t op_ret, char **op_errstr, goto out; } break; - case GF_SNAP_OPTION_TYPE_DELETE: case GF_SNAP_OPTION_TYPE_RESTORE: ret = glusterd_snapshot_update_snaps_post_validate (dict, @@ -5469,7 +5703,12 @@ glusterd_snapshot_postvalidate (dict_t *dict, int32_t op_ret, char **op_errstr, goto out; } break; - + case GF_SNAP_OPTION_TYPE_ACTIVATE: + case GF_SNAP_OPTION_TYPE_DEACTIVATE: + /*Nothing to be done. But want to + * avoid the default case warning*/ + ret = 0; + break; default: gf_log (this->name, GF_LOG_WARNING, "invalid snap command"); goto out; @@ -5603,8 +5842,22 @@ glusterd_handle_snapshot_fn (rpcsvc_request_t *req) "failed: %s", err_str); } break; - case GF_SNAP_OPTION_TYPE_START: - case GF_SNAP_OPTION_TYPE_STOP: + case GF_SNAP_OPTION_TYPE_ACTIVATE: + ret = glusterd_mgmt_v3_initiate_snap_phases (req, cli_op, + dict); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "Snapshot activate failed: %s", err_str); + } + break; + case GF_SNAP_OPTION_TYPE_DEACTIVATE: + ret = glusterd_mgmt_v3_initiate_snap_phases (req, cli_op, + dict); + if (ret) { + gf_log (this->name, GF_LOG_WARNING, + "Snapshot deactivate failed: %s", err_str); + } + break; case GF_SNAP_OPTION_TYPE_STATUS: ret = glusterd_handle_snapshot_status (req, cli_op, dict, err_str, |