diff options
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-snapshot.c')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-snapshot.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-snapshot.c b/xlators/mgmt/glusterd/src/glusterd-snapshot.c index 0c92acb1803..6c97d45962d 100644 --- a/xlators/mgmt/glusterd/src/glusterd-snapshot.c +++ b/xlators/mgmt/glusterd/src/glusterd-snapshot.c @@ -919,6 +919,76 @@ out: return ret; } +/* + * This function validates the particulat snapshot with respect to the current + * cluster. If the snapshot has ganesha enabled, and the cluster is not a nfs + * ganesha cluster, we fail the validation. Other scenarios where either the + * snapshot does not have ganesha enabled or it has and the cluster is a nfs + * ganesha cluster, we pass the validation + * + * @param snap snap object of the snapshot to be validated + * @return Negative value on Failure and 0 in success + */ +int32_t +glusterd_snapshot_validate_ganesha_conf (glusterd_snap_t *snap, + char **op_errstr, + uint32_t *op_errno) +{ + int ret = -1; + glusterd_volinfo_t *snap_vol = NULL; + xlator_t *this = NULL; + + this = THIS; + GF_VALIDATE_OR_GOTO ("snapshot", this, out); + GF_VALIDATE_OR_GOTO (this->name, snap, out); + GF_VALIDATE_OR_GOTO (this->name, op_errstr, out); + GF_VALIDATE_OR_GOTO (this->name, op_errno, out); + + snap_vol = list_entry (snap->volumes.next, + glusterd_volinfo_t, vol_list); + + GF_VALIDATE_OR_GOTO (this->name, snap_vol, out); + + /* + * Check if the snapshot has ganesha enabled * + */ + if (glusterd_check_ganesha_export(snap_vol) == _gf_false) { + /* + * If the snapshot has not been exported via ganesha * + * then we can proceed. * + */ + ret = 0; + goto out; + } + + /* + * At this point we are certain that the snapshot has been exported * + * via ganesha. So we check if the cluster is a nfs-ganesha cluster * + * If it a nfs-ganesha cluster, then we proceed. Else we fail. * + */ + if (glusterd_is_ganesha_cluster() != _gf_true) { + ret = gf_asprintf (op_errstr, "Snapshot(%s) has a " + "nfs-ganesha export conf file. " + "cluster.enable-shared-storage and " + "nfs-ganesha should be enabled " + "before restoring this snapshot.", + snap->snapname); + *op_errno = EG_NOGANESHA; + if (ret < 0) { + goto out; + } + + gf_msg (this->name, GF_LOG_ERROR, EINVAL, + GD_MSG_NFS_GANESHA_DISABLED, "%s", *op_errstr); + ret = -1; + goto out; + } + + ret = 0; +out: + return ret; +} + /* This function is called before actual restore is taken place. This function * will validate whether the snapshot volumes are ready to be restored or not. * @@ -989,6 +1059,15 @@ glusterd_snapshot_restore_prevalidate (dict_t *dict, char **op_errstr, goto out; } + ret = glusterd_snapshot_validate_ganesha_conf (snap, op_errstr, + op_errno); + if (ret) { + gf_msg (this->name, GF_LOG_ERROR, 0, + GD_MSG_SNAPSHOT_OP_FAILED, + "ganesha conf validation failed."); + goto out; + } + ret = dict_set_str (rsp_dict, "snapname", snapname); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, @@ -8847,6 +8926,7 @@ glusterd_snapshot_revert_partial_restored_vol (glusterd_volinfo_t *volinfo) int ret = 0; char pathname [PATH_MAX] = {0,}; char trash_path[PATH_MAX] = {0,}; + glusterd_brickinfo_t *brickinfo = NULL; glusterd_volinfo_t *reverted_vol = NULL; glusterd_volinfo_t *snap_vol = NULL; glusterd_volinfo_t *tmp_vol = NULL; @@ -8901,6 +8981,38 @@ glusterd_snapshot_revert_partial_restored_vol (glusterd_volinfo_t *volinfo) snapvol_list) { cds_list_add_tail (&snap_vol->snapvol_list, &reverted_vol->snap_volumes); + + cds_list_for_each_entry (brickinfo, &snap_vol->bricks, + brick_list) { + /* + * If the brick is not of this peer, or snapshot is * + * missed for the brick don't restore the xattr for it * + */ + if ((!gf_uuid_compare (brickinfo->uuid, MY_UUID)) && + (brickinfo->snap_status != -1)) { + /* + * We need to restore volume id of all snap * + * bricks to volume id of the snap volume. * + */ + ret = sys_lsetxattr (brickinfo->path, + GF_XATTR_VOL_ID_KEY, + snap_vol->volume_id, + sizeof (snap_vol->volume_id), + XATTR_REPLACE); + if (ret == -1) { + gf_msg (this->name, GF_LOG_ERROR, 0, + GD_MSG_SETXATTR_FAIL, + "Failed to set extended " + "attribute %s on %s. " + "Reason: %s, snap: %s", + GF_XATTR_VOL_ID_KEY, + brickinfo->path, + strerror (errno), + snap_vol->volname); + goto out; + } + } + } } /* Since we retrieved the volinfo from store now we don't |