diff options
| author | Krutika Dhananjay <kdhananj@redhat.com> | 2014-05-21 17:47:03 +0530 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2014-06-02 03:56:46 -0700 |
| commit | db022ef7ecca77cbecbcc4c046b6d3aafd2cb86f (patch) | |
| tree | 0abb9a8bfb99ef814d1f994a60826d2a1c63b64c /xlators/cluster | |
| parent | 0d26de1b0a4a0fbf7e33dab8bc46c38c179e8645 (diff) | |
cluster/dht: Fix min-free-disk calculations when quota-deem-statfs is on
PROBLEM:
As part of file creation, DHT sends a statfs call to all of its
sub-volumes and expects in return the local space consumption and
availability on each one of them. This information is used by DHT to
ensure that atleast min-free-disk amount of space is left on each
sub-volume in the event that there ARE other sub-volumes with more
space available.
But when quota-deem-statfs is enabled, quota xlator on every brick
unwinds the statfs call with volume-wide consumption of disk space.
This leads to miscalculation in min-free-disk algo, thereby misleading
DHT at some point, into thinking all sub-volumes have equal available
space, in which case DHT keeps sending new file creates to subvol-0,
causing it to become 100% full at some point although there ARE other
subvols with ample space available.
FIX:
The fix is to make quota_statfs() behave as if quota xlator weren't
enabled, thereby making every brick return only its local consumption
and disk space availability.
Change-Id: I211371a1eddb220037bd36a128973938ea8124c2
BUG: 1099890
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/7845
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/cluster')
| -rw-r--r-- | xlators/cluster/dht/src/dht-diskusage.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/xlators/cluster/dht/src/dht-diskusage.c b/xlators/cluster/dht/src/dht-diskusage.c index fe3955ecbb7..d035aca2665 100644 --- a/xlators/cluster/dht/src/dht-diskusage.c +++ b/xlators/cluster/dht/src/dht-diskusage.c @@ -135,6 +135,7 @@ int dht_get_du_info (call_frame_t *frame, xlator_t *this, loc_t *loc) { int i = 0; + int ret = -1; dht_conf_t *conf = NULL; call_frame_t *statfs_frame = NULL; dht_local_t *statfs_local = NULL; @@ -164,12 +165,25 @@ dht_get_du_info (call_frame_t *frame, xlator_t *this, loc_t *loc) goto err; } + statfs_local->params = dict_new (); + if (!statfs_local->params) + goto err; + + ret = dict_set_int8 (statfs_local->params, + GF_INTERNAL_IGNORE_DEEM_STATFS, 1); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to set " + GF_INTERNAL_IGNORE_DEEM_STATFS" in dict"); + goto err; + } + statfs_local->call_cnt = conf->subvolume_cnt; for (i = 0; i < conf->subvolume_cnt; i++) { STACK_WIND (statfs_frame, dht_du_info_cbk, conf->subvolumes[i], conf->subvolumes[i]->fops->statfs, - &tmp_loc, NULL); + &tmp_loc, statfs_local->params); } conf->last_stat_fetch.tv_sec = tv.tv_sec; |