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authorJoseph Fernandes <josferna@redhat.com>2015-11-08 15:33:15 +0530
committerDan Lambright <dlambrig@redhat.com>2015-11-15 13:47:48 -0800
commitd4aaa00d77d7a10748a1ca9af82265ad9ac42598 (patch)
tree28c701f3e83fdda8c05b2434e18f24a691c91b23 /xlators/mgmt/glusterd/src
parent4af4c1acc7b77d70af1b09964c7cbddb5c797214 (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/glusterd/src')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volume-set.c16
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 ccf4b38..e3110b06 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",