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authorShyam <srangana@redhat.com>2017-05-25 17:14:03 -0400
committerShyamsundar Ranganathan <srangana@redhat.com>2017-05-26 16:35:26 +0000
commit3efadd83dc4367268e3af71e3fad82634bcd786d (patch)
treeeb198eeb5e6399a6ddda700e2627a348f52d389d /doc
parent1191365294f40c35de452db6f2ebd8606a999324 (diff)
doc: Updated release notes for several features/changes in 3.11.0
Updates #61, Updates #156 Fixes #166, Fixes #167 Change-Id: I031bf944493b959d44c97fb0ddf7c1b80e53bdda Signed-off-by: Shyam <srangana@redhat.com> Reviewed-on: https://review.gluster.org/17390 CentOS-regression: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org>
Diffstat (limited to 'doc')
-rw-r--r--doc/release-notes/3.11.0.md48
1 files changed, 45 insertions, 3 deletions
diff --git a/doc/release-notes/3.11.0.md b/doc/release-notes/3.11.0.md
index 07bc2e3ee21..8f88ed62a3b 100644
--- a/doc/release-notes/3.11.0.md
+++ b/doc/release-notes/3.11.0.md
@@ -43,9 +43,16 @@ None
### Several memory leaks are fixed in gfapi during graph switches
*Notes for users:*
+Gluster API (or gfapi), has had a few memory leak issues arising specifically
+during changes to volume graphs (volume topology or options). A few of these are
+addressed in this release, and more work towards ironing out the pending leaks
+are in the works across the next few releases.
+
*Limitations:*
+None
*Known Issues:*
+None
### get-state CLI is enhanced to provide client and brick capacity related information
*Notes for users:*
@@ -103,16 +110,44 @@ None
### Feature for metadata-caching/small file performance is production ready
*Notes for users:*
+Over the course of releases several fixes and enhancements have been made to
+the mdcache xlator, to improve performance of small file workloads. As a
+result, with this release we are announcing this feature to be production ready.
+
+In order to improve the performance of directory operations of Gluster volumes,
+the maximum metadata (stat, xattr) caching time on the client side is increased
+to 10 minutes, without compromising on the consistency of the cache. Significant
+performance improvements can be achieved in the following workloads on FUSE and
+SMB access, by enabling metadata caching:
+
+- Listing of directories (recursive)
+- Creating files
+- Deleting files
+- Renaming files
+
+To enable metadata caching execute the following commands:
+```bash
+# gluster volume set group metadata-cache
+# gluster volume set network.inode-lru-limit <n>
+```
+\<n\>, is set to 50000 by default. It should be increased if the number of
+concurrently accessed files in the volume is very high. Increasing this number
+increases the memory footprint of the brick processes.
+
*Limitations:*
+None
*Known Issues:*
+None
-### "Parallel Readdir" feature is production ready
+### "Parallel Readdir" feature introduced in 3.10.0 is production ready
*Notes for users:*
-*Limitations:*
+This feature was introduced in 3.10 and was experimental in nature. Over the
+course of 3.10 minor releases and 3.11.0 release, this feature has been
+stabilized and is ready for use in production environments.
-*Known Issues:*
+For further release notes refer: [3.10.0 release notes](https://github.com/gluster/glusterfs/blob/release-3.10/doc/release-notes/3.10.0.md)
### Object versioning is enabled only if bitrot is enabled
*Notes for users:*
@@ -152,9 +187,16 @@ None.
### Improved adoption of standard refcounting functions across the code
*Notes for users:*
+This change does not impact users, it is an internal code cleanup activity
+that ensures that we ref count in a standard manner, thus avoiding unwanted
+bugs due to different implementations of the same.
+
*Limitations:*
+None
*Known Issues:*
+This standardization started with this release and is expected to continue
+across releases.
### Performance improvements to rebalance have been made
*Notes for users:*