doc : release-notes for GlusterFS-3.12.4v3.12.4

Change-Id: Ib48b2ae64a3cf90b44c3a80ffcda6204f152ae40
BUG: 1519095
Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com>

1 files changed, 30 insertions, 0 deletions

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+# Release notes for Gluster 3.12.4
+
+This is a bugfix release. The release notes for [3.12.0](3.12.0.md), [3.12.1](3.12.1.md),
+[3.12.2](3.12.2.md), [3.12.3](3.12.3.md), [3.12.4](3.12.4.md) contain a listing of all
+the new features that were added and bugs fixed in the GlusterFS 3.12 stable release.
+
+## Major issues
+1. Expanding a gluster volume that is sharded may cause file corruption
+    - Sharded volumes are typically used for VM images, if such volumes are
+  expanded or possibly contracted (i.e add/remove bricks and rebalance) there
+  are reports of VM images getting corrupted.
+    - The last known cause for corruption #1465123 is still pending, and not yet
+    part of this release.
+
+## Bugs addressed
+
+     A total of 13 patches have been merged, addressing 12 bugs
+
+- [#1478411](https://bugzilla.redhat.com/1478411): Directory listings on fuse mount are very slow due to small number of getdents() entries
+- [#1511782](https://bugzilla.redhat.com/1511782): In Replica volume 2*2 when quorum is set, after glusterd restart nfs server is coming up instead of self-heal daemon
+- [#1512432](https://bugzilla.redhat.com/1512432): Test bug-1483058-replace-brick-quorum-validation.t fails inconsistently
+- [#1513258](https://bugzilla.redhat.com/1513258): NetBSD port
+- [#1514380](https://bugzilla.redhat.com/1514380): default timeout of 5min not honored for analyzing split-brain files post setfattr replica.split-brain-heal-finalize
+- [#1514420](https://bugzilla.redhat.com/1514420): gluster volume splitbrain info needs to display output of each brick in a stream fashion instead of buffering and dumping at the end
+- [#1515042](https://bugzilla.redhat.com/1515042): bug-1247563.t is failing on master
+- [#1516691](https://bugzilla.redhat.com/1516691): Rebalance fails on NetBSD because fallocate is not implemented
+- [#1517689](https://bugzilla.redhat.com/1517689): Memory leak in locks xlator
+- [#1518061](https://bugzilla.redhat.com/1518061): Remove 'summary' option from 'gluster vol heal..' CLI
+- [#1523048](https://bugzilla.redhat.com/1523048): glusterd consuming high memory
+- [#1523455](https://bugzilla.redhat.com/1523455): Store allocated objects in the mem_acct