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/mgmt/glusterd/src/glusterd-volume-set.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/mgmt/glusterd/src/glusterd-volume-set.c')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-volume-set.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-set.c b/xlators/mgmt/glusterd/src/glusterd-volume-set.c index 0c67135db3f..931f99ba5af 100644 --- a/xlators/mgmt/glusterd/src/glusterd-volume-set.c +++ b/xlators/mgmt/glusterd/src/glusterd-volume-set.c @@ -462,7 +462,8 @@ validate_tier (glusterd_volinfo_t *volinfo, dict_t *dict, char *key, strstr (key, "tier-max-files") || strstr (key, "tier-demote-frequency") || strstr (key, "tier-hot-compact-frequency") || - strstr (key, "tier-cold-compact-frequency")) { + strstr (key, "tier-cold-compact-frequency") || + strstr (key, "tier-query-limit")) { if (origin_val < 1) { snprintf (errstr, sizeof (errstr), "%s is not a " " compatible value. %s expects a positive " @@ -2739,6 +2740,18 @@ struct volopt_map_entry glusterd_volopt_map[] = { .description = "The maximum number of files that may be migrated" " in any direction in a given cycle by a single node." }, + { .key = "cluster.tier-query-limit", + .voltype = "cluster/tier", + .option = "tier-query-limit", + .value = "100", + .op_version = GD_OP_VERSION_3_9_0, + .flags = OPT_FLAG_CLIENT_OPT, + .validate_fn = validate_tier, + .type = NO_DOC, + .description = "The maximum number of files that may be migrated " + "during an emergency demote. An emergency condition " + "is flagged when writes breach the hi-watermark." + }, { .key = "cluster.tier-compact", .voltype = "cluster/tier", .option = "tier-compact", |