[Samba] [Announce] CTDB 2.5 available for download

[Amitay Isaacs]

Changes in CTDB 2.5
===================

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

* The default location of the ctdbd socket is now:

    /var/run/ctdb/ctdbd.socket

  If you currently set CTDB_SOCKET in configuration then unsetting it
  will probably do what you want.

* The default location of CTDB TDB databases is now:

    /var/lib/ctdb

  If you only set CTDB_DBDIR (to the old default of /var/ctdb) then
  you probably want to move your databases to /var/lib/ctdb, drop your
  setting of CTDB_DBDIR and just use the default.

  To maintain the database files in /var/ctdb you will need to set
  CTDB_DBDIR, CTDB_DBDIR_PERSISTENT and CTDB_DBDIR_STATE, since all of
  these have moved.

* Use of CTDB_OPTIONS to set ctdbd command-line options is no longer
  supported.  Please use individual configuration variables instead.

* Obsolete tunables VacuumDefaultInterval, VacuumMinInterval and
  VacuumMaxInterval have been removed.  Setting them had no effect but
  if you now try to set them in a configuration files via CTDB_SET_X=Y
  then CTDB will not start.

* Much improved manual pages.  Added new manpages ctdb(7),
  ctdbd.conf(5), ctdb-tunables(7).  Still some work to do.

* Most CTDB-specific configuration can now be set in
  /etc/ctdb/ctdbd.conf.

  This avoids cluttering distribution-specific configuration files,
  such as /etc/sysconfig/ctdb.  It also means that we can say: see
  ctdbd.conf(5) for more details.  :-)

* Configuration variable NFS_SERVER_MODE is deprecated and has been
  replaced by CTDB_NFS_SERVER_MODE.  See ctdbd.conf(5) for more
  details.

* "ctdb reloadips" is much improved and should be used for reloading
  the public IP configuration.

  This commands attempts to yield much more predictable IP allocations
  than using sequences of delip and addip commands.  See ctdb(1) for
  details.

* Ability to pass comma-separated string to ctdb(1) tool commands via
  the -n option is now documented and works for most commands.  See
  ctdb(1) for details.

* "ctdb rebalancenode" is now a debugging command and should not be
  used in normal operation.  See ctdb(1) for details.

* "ctdb ban 0" is now invalid.

  This was documented as causing a permanent ban.  However, this was
  not implemented and caused an "unban" instead.  To avoid confusion,
  0 is now an invalid ban duration.  To administratively "ban" a node
  use "ctdb stop" instead.

* The systemd configuration now puts the PID file in /run/ctdb (rather
  than /run/ctdbd) for consistency with the initscript and other uses
  of /var/run/ctdb.

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

* Traverse regression fixed.

* The default recovery method for persistent databases has been
  changed to use database sequence numbers instead of doing
  record-by-record recovery (using record sequence numbers).  This
  fixes issues including registry corruption.

* Banned nodes are no longer told to run the "ipreallocated" event
  during a takeover run, when in fallback mode with nodes that don't
  support the IPREALLOCATED control.

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

* Persistent transactions are now compatible with Samba and work
  reliably.

* The recovery master role has been made more stable by resetting the
  priority time each time a node becomes inactive.  This means that
  nodes that are active for a long time are more likely to retain the
  recovery master role.

* The incomplete libctdb library has been removed.

* Test suite now starts ctdbd with the --sloppy-start option to speed
  up startup.  However, this should not be done in production.


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.