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Release notes for Gluster 3.12.1

This is a bugfix release. The Release Notes for 3.12.0, 3.12.1 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: [geo-rep+qr]: Crashes observed at slave from qr_lookup_sbk during rename/hardlink/rebalance
  • #1486557: Log entry of files skipped/failed during rebalance operation
  • #1487033: rpc: client_t and related objects leaked due to incorrect ref counts
  • #1487319: afr: check op_ret value in __afr_selfheal_name_impunge
  • #1488119: scripts: mount.glusterfs contains non-portable bashisms
  • #1488168: Launch metadata heal in discover code path.
  • #1488387: gluster-blockd process crashed and core generated
  • #1488718: [RHHI] cannot boot vms created from template when disk format = qcow2
  • #1489260: Crash in dht_check_and_open_fd_on_subvol_task()
  • #1489296: glusterfsd (brick) process crashed
  • #1489511: return ENOSYS for 'non readable' FOPs