diff options
| author | Joseph Fernandes <josferna@redhat.com> | 2015-11-08 15:33:15 +0530 |
|---|---|---|
| committer | Dan Lambright <dlambrig@redhat.com> | 2015-11-15 13:47:48 -0800 |
| commit | d4aaa00d77d7a10748a1ca9af82265ad9ac42598 (patch) | |
| tree | 28c701f3e83fdda8c05b2434e18f24a691c91b23 /xlators/mgmt | |
| parent | 4af4c1acc7b77d70af1b09964c7cbddb5c797214 (diff) | |
tier/ctr: Providing option to record or ignore metadata heat
Currently we heat up a file for both data and metadata write.
Here we provide a ctr xlator option called "ctr-record-metadata-heat"
were the admin can decide on recording metadata heat i.e heatup a
file on metadata writes or not.
Metadata data operation are
a. setattr: explicit changing of atime/mtime using utimes,
changing of posix permissions of the file
b. rename: Renaming a file,
c. unlink, link: adding or deleting hardlinks
d. xattrs: setting or removal of xattrs.
NOTE: atime, mtime and ctime change through writev, readv, truncate, mknod
and create will not be considered here as these fops are data and primary
metadata fops.
Defaultly "ctr-record-metadata-heat" is off. Admin can
switch it on using gluster volume set command.
Change-Id: I91157509255dd5cb429cda2b6d4f64582e155e7b
BUG: 1279166
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Reviewed-on: http://review.gluster.org/12540
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Tested-by: Dan Lambright <dlambrig@redhat.com>
Diffstat (limited to 'xlators/mgmt')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-volume-set.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-set.c b/xlators/mgmt/glusterd/src/glusterd-volume-set.c index ccf4b380ffb..e3110b060fe 100644 --- a/xlators/mgmt/glusterd/src/glusterd-volume-set.c +++ b/xlators/mgmt/glusterd/src/glusterd-volume-set.c @@ -2116,6 +2116,22 @@ struct volopt_map_entry glusterd_volopt_map[] = { "of writes (or reads) to a given file are needed " "before triggering migration." }, + { .key = "features.ctr-record-metadata-heat", + .voltype = "features/changetimerecorder", + .value = "off", + .option = "ctr-record-metadata-heat", + .op_version = GD_OP_VERSION_3_7_0, + /* Purposefully commenting the description so that this option remains + * hidden from the users as this is more of a developer option as of + * now. + * .description = "Its a Change Time Recorder Xlator option to " + * "enable recording write heat on metadata of the file. " + "The default is disabled. " + "Metadata is inode atttributes like atime, mtime," + " permissions etc and " + "extended attributes of a file ." + * */ + }, { .key = "features.ctr_link_consistency", .voltype = "features/changetimerecorder", .value = "off", |