Added release notes for 3.12.1

Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com>

mkdocs.yml

@@ -104,6 +104,7 @@ pages:
   - Upgrade to 3.12: Upgrade-Guide/upgrade_to_3.12.md
 - Release Notes:
   - index: release-notes/index.md
+  - 3.12.1: release-notes/3.12.0.md
   - 3.12.0: release-notes/3.12.0.md
   - 3.11.3: release-notes/3.11.3.md
   - 3.11.2: release-notes/3.11.2.md

release-notes/3.12.1.md

@@ -0,0 +1,34 @@
+# Release notes for Gluster 3.12.1
+
+This is a bugfix release. The [Release Notes for 3.12.0](3.12.0.md),
+     [3.12.1](3.12.1.md) contain a listing of all the new features that
+     were added and bugs fixed in the GlusterFS 3.12 stable release.
+
+## Major changes, features and limitations addressed in this release
+     No Major changes
+
+## 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 (Bug #1465123) has a fix with this
+  release. As further testing is still in progress, the issue is retained as
+  a major issue.
+    - Status of this bug can be tracked here, #1465123
+
+## Bugs addressed
+
+     A total of 12 patches have been merged, addressing 11 bugs
+
+- [#1486538](https://bugzilla.redhat.com/1486538): [geo-rep+qr]: Crashes observed at slave from qr_lookup_sbk during rename/hardlink/rebalance
+- [#1486557](https://bugzilla.redhat.com/1486557): Log entry of files skipped/failed during rebalance operation
+- [#1487033](https://bugzilla.redhat.com/1487033): rpc: client_t and related objects leaked due to incorrect ref counts
+- [#1487319](https://bugzilla.redhat.com/1487319): afr: check op_ret value in __afr_selfheal_name_impunge
+- [#1488119](https://bugzilla.redhat.com/1488119): scripts: mount.glusterfs contains non-portable bashisms
+- [#1488168](https://bugzilla.redhat.com/1488168): Launch metadata heal in discover code path.
+- [#1488387](https://bugzilla.redhat.com/1488387): gluster-blockd process crashed and core generated
+- [#1488718](https://bugzilla.redhat.com/1488718): [RHHI] cannot boot vms created from template when disk format = qcow2
+- [#1489260](https://bugzilla.redhat.com/1489260): Crash in dht_check_and_open_fd_on_subvol_task()
+- [#1489296](https://bugzilla.redhat.com/1489296): glusterfsd (brick) process crashed
+- [#1489511](https://bugzilla.redhat.com/1489511): return ENOSYS for 'non readable' FOPs

release-notes/index.md

@@ -4,6 +4,7 @@ Release Notes
 ###GlusterFS 3.12 release notes
 
 - [3.12.0](./3.12.0.md)
+- [3.12.1](./3.12.1.md)
 
 ###GlusterFS 3.11 release notes