sin/samba-mirror
1
0
Fork 0
mirror of https://github.com/samba-team/samba.git synced 2024-12-22 13:34:15 +03:00
Code

WHATSNEW: Documentation CTDB changes for v4.4

Browse Source 
Signed-off-by: Martin Schwenke <martin@meltin.net>
Signed-off-by: Amitay Isaacs <amitay@gmail.com>

Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Mon Jan 25 16:47:54 CET 2016 on sn-devel-144
This commit is contained in:
Martin Schwenke 2016-01-25 20:29:35 +11:00 committed by Amitay Isaacs
parent b7da062cba
commit 1bf7905065
1 changed files with 55 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
WHATSNEW.txt
View File

@ -44,12 +44,60 @@ smb.conf changes
CTDB changes
------------
* CTDB now uses a newly implemented parallel database recovery scheme
that avoids deadlocks with smbd.
In certain circumstances CTDB and smbd could deadlock. The new
recovery implementation avoid this. It also provides improved
recovery performance.
* All files are now installed into and referred to by the paths
configured at build time. Therefore, CTDB will now work properly
when installed into the default location at /usr/local.
* Public CTDB header files are no longer installed, since Samba and
CTDB are built from within the same source tree.
* CTDB_DBDIR can now be set to tmpfs[:<tmpfs-options>]
This will cause volatile TDBs to be located in a tmpfs. This can
help to avoid performance problems associated with contention on the
disk where volatile TDBs are usually stored. See ctdbd.conf(5) for
more details.
* Configuration variable CTDB_NATGW_SLAVE_ONLY is no longer used.
Instead, nodes should be annotated with the "slave-only" option in
the CTDB NAT gateway nodes file. This file must be consistent
across nodes in a NAT gateway group. See ctdbd.conf(5) for more
details.
* New event script 05.system allows various system resources to be
monitored
This can be helpful for explaining poor performance or unexpected
behaviour. New configuration variables are
CTDB_MONITOR_FILESYSTEM_USAGE, CTDB_MONITOR_MEMORY_USAGE and
CTDB_MONITOR_SWAP_USAGE. Default values cause warnings to be
logged. See the SYSTEM RESOURCE MONITORING CONFIGURATION in
ctdbd.conf(5) for more information.
The memory, swap and filesystem usage monitoring previously found in
00.ctdb and 40.fs_use is no longer available. Therefore,
configuration variables CTDB_CHECK_FS_USE, CTDB_MONITOR_FREE_MEMORY,
CTDB_MONITOR_FREE_MEMORY_WARN and CTDB_CHECK_SWAP_IS_NOT_USED are
now ignored.
* The 62.cnfs eventscript has been removed. To get a similar effect
just do something like this:
mmaddcallback ctdb-disable-on-quorumLoss \
--command /usr/bin/ctdb \
--event quorumLoss --parms "disable"
mmaddcallback ctdb-enable-on-quorumReached \
--command /usr/bin/ctdb \
--event quorumReached --parms "enable"
* The CTDB tunable parameter EventScriptTimeoutCount has been renamed
to MonitorTimeoutCount
@ -58,6 +106,13 @@ CTDB changes
Configurations containing CTDB_SET_EventScriptTimeoutCount=<n> will
cause CTDB to fail at startup. Useful messages will be logged.
* The commandline option "-n all" to CTDB tool has been removed.
The option was not uniformly implemented for all the commands.
Instead of command "ctdb ip -n all", use "ctdb ip all".
* All CTDB current manual pages are now correctly installed
KNOWN ISSUES
============