[Announce] CTDB 2.3 available for download

[Amitay Isaacs]

Changes in CTDB 2.3
===================

User-visible changes
--------------------

* 2 new configuration variables for 60.nfs eventscript:

  - CTDB_MONITOR_NFS_THREAD_COUNT
  - CTDB_NFS_DUMP_STUCK_THREADS

  See ctdb.sysconfig for details.

* Removed DeadlockTimeout tunable.  To enable debug of locking issues set

   CTDB_DEBUG_LOCKS=/etc/ctdb/debug_locks.sh

* In overall statistics and database statistics, lock buckets have been
  updated to use following timings:

   < 1ms, < 10ms, < 100ms, < 1s, < 2s, < 4s, < 8s, < 16s, < 32s, < 64s, >=
64s

* Initscript is now simplified with most CTDB-specific functionality
  split out to ctdbd_wrapper, which is used to start and stop ctdbd.

* Add systemd support.

* CTDB subprocesses are now given informative names to allow them to
  be easily distinguished when using programs like "top" or "perf".

Important bug fixes
-------------------

* ctdb tool should not exit from a retry loop if a control times out
  (e.g. under high load).  This simple fix will stop an exit from the
  retry loop on any error.

* When updating flags on all nodes, use the correct updated flags.  This
  should avoid wrong flag change messages in the logs.

* The recovery daemon will not ban other nodes if the current node
  is banned.

* ctdb dbstatistics command now correctly outputs database statistics.

* Fixed a panic with overlapping shutdowns (regression in 2.2).

* Fixed 60.ganesha "monitor" event (regression in 2.2).

* Fixed a buffer overflow in the "reloadips" implementation.

* Fixed segmentation faults in ping_pong (called with incorrect
  argument) and test binaries (called when ctdbd not running).

Important internal changes
--------------------------

* The recovery daemon on stopped or banned node will stop participating in
any
  cluster activity.

* Improve cluster wide database traverse by sending the records directly
from
  traverse child process to requesting node.

* TDB checking and dropping of all IPs moved from initscript to "init"
  event in 00.ctdb.

* To avoid "rogue IPs" the release IP callback now fails if the
  released IP is still present on an interface.


Reporting bugs & Development Discussion
===============================


Please discuss this release on the samba-technical mailing list or by
joining the #ctdb IRC channel on irc.freenode.net.

All bug reports should be filed under CTDB product in the project's
Bugzilla database (https://bugzilla.samba.org/).


Download Details
=============

The source code can be downloaded from:

      http://ftp.samba.org/pub/ctdb/

Git repository

       git://git.samba.org/ctdb.git
       http://git.samba.org/?p=ctdb.git;a=summary  (Git via web)

CTDB documentation

        https://ctdb.samba.org/


Amitay.