diff options
author | Joseph Fernandes <josferna@redhat.com> | 2015-09-11 09:36:06 -0400 |
---|---|---|
committer | Dan Lambright <dlambrig@redhat.com> | 2015-09-11 13:46:50 -0700 |
commit | 1d02d4bd9b5f7d730ab08961c17ef58204c8e8fd (patch) | |
tree | b37cf8fffe901013185e8011ea32b680640871d1 /libglusterfs/src/gfdb/gfdb_sqlite3.h | |
parent | 46674c5d5caaa183f8ee99efb64ef268eded91ab (diff) |
tier/ctr: Solving DB Lock issue due to write contention from db connections
This is a backport of 12031.
> Problem: The DB on the brick is been accessed by CTR, for write and
> tier migrator, for read and write. The write from tier migrator is reseting
> the heat counters after a cycle. Since we are using sqlite, two connections
> trying to write would cause a db lock contention. As a result CTR used to fail
> to update the db.
> Solution: Using the same db connection of CTR for reseting the heat counters.
> 1) Introducted a new IPC FOP for CTR
> 2) After the query do a ipc syncop to the underlying client xlator associated
> to the brick.
> 3) CTR in brick will catch the IPC FOP and cleat the heat counters.
> Change-Id: I53306bfc08dcdba479deb4ccc154896521336150
> BUG: 1260730
> Signed-off-by: Joseph Fernandes <josferna@redhat.com>
> Reviewed-on: http://review.gluster.org/12031
> Tested-by: NetBSD Build System <jenkins@build.gluster.org>
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
Signed-off-by: Dan Lambright <dlambrig@redhat.com>
Conflicts:
xlators/cluster/dht/src/tier.c
Change-Id: I88aa289cdf21e216b42c3d8ccfb4e7e828b43772
BUG: 1262341
Reviewed-on: http://review.gluster.org/12161
Reviewed-by: Joseph Fernandes
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: Dan Lambright <dlambrig@redhat.com>
Diffstat (limited to 'libglusterfs/src/gfdb/gfdb_sqlite3.h')
-rw-r--r-- | libglusterfs/src/gfdb/gfdb_sqlite3.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libglusterfs/src/gfdb/gfdb_sqlite3.h b/libglusterfs/src/gfdb/gfdb_sqlite3.h index 4c9489fbb7c..34235e07241 100644 --- a/libglusterfs/src/gfdb/gfdb_sqlite3.h +++ b/libglusterfs/src/gfdb/gfdb_sqlite3.h @@ -284,6 +284,8 @@ int gf_sqlite3_find_recently_changed_files_freq (void *db_conn, int read_freq_cnt, gf_boolean_t clear_counters); +int gf_sqlite3_clear_files_heat (void *db_conn); + void gf_sqlite3_fill_db_operations (gfdb_db_operations_t *gfdb_db_ops); #endif |