diff options
| author | Milind Changire <mchangir@redhat.com> | 2016-10-15 10:49:19 +0530 |
|---|---|---|
| committer | Dan Lambright <dlambrig@redhat.com> | 2016-10-19 12:51:48 -0700 |
| commit | 460016428cf27484c333227f534c2e2f73a37fb1 (patch) | |
| tree | 321a1bb0517f622a134b3ab0634d6fea842fdb06 /xlators/cluster/dht/src/dht-shared.c | |
| parent | 20d2b36f3acc2f27527b7913d2ad939848395aeb (diff) | |
cluster/tier: handle fast demotions
Demote files on priority if hi-watermark has been breached and continue
to demote until the watermark drops below hi-watermark.
Monitor watermark more frequently.
Trigger demotion as soon as hi-watermark is breached.
Add cluster.tier-emergency-demote-query-limit option to limit number
of files returned from the database query for every iteration of
tier_migrate_using_query_file(). If watermark hasn't dropped below
hi-watermark during the first iteration, the next iteration will be
triggered approximately 1 second after tier_demote() returns to the
main tiering loop.
Update changetimerecorder xlator to handle query for emergency demote
mode.
Add tier-ctr-interface.h:
Move tier and ctr interface specific macros and struct definition from
libglusterfs/src/gfdb/gfdb_data_store.h to new header
libglusterfs/src/tier-ctr-interface.h
Change-Id: If56af78c6c81d37529b9b6e65ae606ba5c99a811
BUG: 1366648
Signed-off-by: Milind Changire <mchangir@redhat.com>
Reviewed-on: http://review.gluster.org/15158
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Diffstat (limited to 'xlators/cluster/dht/src/dht-shared.c')
| -rw-r--r-- | xlators/cluster/dht/src/dht-shared.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/xlators/cluster/dht/src/dht-shared.c b/xlators/cluster/dht/src/dht-shared.c index f410f71b5a6..46bf461cf63 100644 --- a/xlators/cluster/dht/src/dht-shared.c +++ b/xlators/cluster/dht/src/dht-shared.c @@ -1064,6 +1064,10 @@ struct volume_options options[] = { .type = GF_OPTION_TYPE_INT, .default_value = "10000", }, + { .key = {"tier-query-limit"}, + .type = GF_OPTION_TYPE_INT, + .default_value = "100", + }, /* switch option */ { .key = {"pattern.switch.case"}, .type = GF_OPTION_TYPE_ANY |