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* Configuration variable NFS_SERVER_MODE is deprecated and has been
replaced by CTDB_NFS_SERVER_MODE.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.
