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 /libglusterfs/src/gfdb/gfdb_data_store_types.h | |
| 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 'libglusterfs/src/gfdb/gfdb_data_store_types.h')
| -rw-r--r-- | libglusterfs/src/gfdb/gfdb_data_store_types.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libglusterfs/src/gfdb/gfdb_data_store_types.h b/libglusterfs/src/gfdb/gfdb_data_store_types.h index d0c96370eb8..02b7aa0fd33 100644 --- a/libglusterfs/src/gfdb/gfdb_data_store_types.h +++ b/libglusterfs/src/gfdb/gfdb_data_store_types.h @@ -366,12 +366,18 @@ typedef int * for every record found * _query_cbk_args : Custom argument passed for the call back * function query_callback + * query_limit : 0 - list all files + * positive value - add the LIMIT clause to + * the SQL query to limit the number of records + * returned + * * Returns : if successful return 0 or * -ve value in case of failure*/ typedef int (*gfdb_find_all_t)(void *db_conn, gf_query_callback_t query_callback, - void *_cbk_args); + void *_cbk_args, + int query_limit); |