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/features/changetimerecorder | |
| 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/features/changetimerecorder')
| -rw-r--r-- | xlators/features/changetimerecorder/src/changetimerecorder.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/xlators/features/changetimerecorder/src/changetimerecorder.c b/xlators/features/changetimerecorder/src/changetimerecorder.c index 4e4ea851a86..ffc4625626b 100644 --- a/xlators/features/changetimerecorder/src/changetimerecorder.c +++ b/xlators/features/changetimerecorder/src/changetimerecorder.c @@ -16,6 +16,7 @@ #include "syscall.h" #include "changetimerecorder.h" +#include "tier-ctr-interface.h" /*******************************inode forget***********************************/ @@ -1726,14 +1727,21 @@ ctr_db_query (xlator_t *this, goto out; } if (!ipc_ctr_params->is_promote) { - if (ipc_ctr_params->write_freq_threshold == 0 && - ipc_ctr_params->read_freq_threshold == 0) { + if (ipc_ctr_params->emergency_demote) { + /* emergency demotion mode */ + ret = find_all (conn_node, + ctr_db_query_callback, + (void *)&query_cbk_args, + ipc_ctr_params->query_limit); + } else { + if (ipc_ctr_params->write_freq_threshold == 0 && + ipc_ctr_params->read_freq_threshold == 0) { ret = find_unchanged_for_time ( conn_node, ctr_db_query_callback, (void *)&query_cbk_args, &ipc_ctr_params->time_stamp); - } else { + } else { ret = find_unchanged_for_time_freq ( conn_node, ctr_db_query_callback, @@ -1742,6 +1750,7 @@ ctr_db_query (xlator_t *this, ipc_ctr_params->write_freq_threshold, ipc_ctr_params->read_freq_threshold, _gf_false); + } } } else { if (ipc_ctr_params->write_freq_threshold == 0 && |