[Samba] Recommended CTDB release for new installation

[Orlando Richards]

Hi folks,

We're building a new CTDB cluster - any recommendation on what version 
of CTDB is the most "production" at the moment? We're currently on 
1.2.66 on our currently in-service clusters.

Cheers,
Orlando

 > -------- Original Message --------
 > Subject: [Samba] [Announce] CTDB 2.4 available for download
 > Date: Fri, 23 Aug 2013 14:11:29 +1000
 > From: Amitay Isaacs <amitay at gmail.com>
 > To: Samba Technical <samba-technical at lists.samba.org>,
 > "samba at lists.samba.org" <samba at lists.samba.org>
 >
 > Changes in CTDB 2.4
 > ===================
 >
 > User-visible changes
 > --------------------
 >
 > * A missing network interface now causes monitoring to fail and the
 >    node to become unhealthy.
 >
 > * Changed ctdb command's default control timeout from 3s to 10s.
 >
 > * debug-hung-script.sh now includes the output of "ctdb scriptstatus"
 >    to provide more information.
 >
 > Important bug fixes
 > -------------------
 >
 > * Starting CTDB daemon by running ctdbd directly should not remove
 >    existing unix socket unconditionally.
 >
 > * ctdbd once again successfully kills client processes on releasing
 >    public IPs.  It was checking for them as tracked child processes
 >    and not finding them, so wasn't killing them.
 >
 > * ctdbd_wrapper now exports CTDB_SOCKET so that child processes of
 >    ctdbd (such as uses of ctdb in eventscripts) use the correct socket.
 >
 > * Always use Jenkins hash when creating volatile databases.  There
 >    were a few places where TDBs would be attached with the wrong flags.
 >
 > * Vacuuming code fixes in CTDB 2.2 introduced bugs in the new code
 >    which led to header corruption for empty records.  This resulted
 >    in inconsistent headers on two nodes and a request for such a record
 >    keeps bouncing between nodes indefinitely and logs "High hopcount"
 >    messages in the log. This also caused performance degradation.
 >
 > * ctdbd was losing log messages at shutdown because they weren't being
 >    given time to flush.  ctdbd now sleeps for a second during shutdown
 >    to allow time to flush log messages.
 >
 > * Improved socket handling introduced in CTDB 2.2 caused ctdbd to
 >    process a large number of packets available on single FD before
 >    polling other FDs.  Use fixed size queue buffers to allow fair
 >    scheduling across multiple FDs.
 >
 > Important internal changes
 > --------------------------
 >
 > * A node that fails to take/release multiple IPs will only incur a
 >    single banning credit.  This makes a brief failure less likely to
 >    cause node to be banned.
 >
 > * ctdb killtcp has been changed to read connections from stdin and
 >    10.interface now uses this feature to improve the time taken to kill
 >    connections.
 >
 > * Improvements to hot records statistics in ctdb dbstatistics.
 >
 > * Recovery daemon now assembles up-to-date node flags information
 >    from remote nodes before checking if any flags are inconsistent and
 >    forcing a recovery.
 >
 > * ctdbd no longer creates multiple lock sub-processes for the same
 >    key.  This reduces the number of lock sub-processes substantially.
 >
 > * Changed the nfsd RPC check failure policy to failover quickly
 >    instead of trying to repair a node first by restarting NFS.  Such
 >    restarts would often hang if the cause of the RPC check failure was
 >    the cluster filesystem or storage.
 >
 > * Logging improvements relating to high hopcounts and sticky records.
 >
 > * Make sure lower level tdb messages are logged correctly.
 >
 > * CTDB commands disable/enable/stop/continue are now resilient to
 >    individual control failures and retry in case of failures.
 >
 >
 > 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.
 >
 >
 >
 >


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