diff options
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-rebalance.c')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-rebalance.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-rebalance.c b/xlators/mgmt/glusterd/src/glusterd-rebalance.c index f2e7338a80e..dac36d4bf1f 100644 --- a/xlators/mgmt/glusterd/src/glusterd-rebalance.c +++ b/xlators/mgmt/glusterd/src/glusterd-rebalance.c @@ -554,6 +554,26 @@ glusterd_op_stage_rebalance (dict_t *dict, char **op_errstr) switch (cmd) { case GF_DEFRAG_CMD_START: case GF_DEFRAG_CMD_START_LAYOUT_FIX: + /* Check if the connected clients are all of version + * glusterfs-3.6 and higher. This is needed to prevent some data + * loss issues that could occur when older clients are connected + * when rebalance is run. This check can be bypassed by using + * 'force' + */ + ret = glusterd_check_client_op_version_support + (volname, GD_OP_VERSION_3_6_0, NULL); + if (ret) { + ret = gf_asprintf (op_errstr, "Volume %s has one or " + "more connected clients of a version" + " lower than GlusterFS-v3.6.0. " + "Starting rebalance in this state " + "could lead to data loss.\nPlease " + "disconnect those clients before " + "attempting this command again.", + volname); + goto out; + } + case GF_DEFRAG_CMD_START_FORCE: if (is_origin_glusterd (dict)) { op_ctx = glusterd_op_get_ctx (); |