[ClusterLabs] Antw: [EXT] Corosync 3.1.1 is available at corosync.org!

[Jan Friesse]

Ulrich,

>>>> Jan Friesse <jfriesse at redhat.com> schrieb am 31.03.2021 um 15:16 in
> Nachricht
> <8f611847-e341-b51b-49c9-fd9ef29fbbf9 at redhat.com>:
>> I am pleased to announce the latest maintenance release of Corosync
>> 3.1.1 available immediately from GitHub release section at
>> https://github.com/corosync/corosync/releases or our website at
>> http://build.clusterlabs.org/corosync/releases/.
>>
>> This release contains important bug fixes and also a few new features:
>>
>>    - Added a new API to get extended node/link information which is now
>> used by corosync-cfgtool (especially when the new -n parameter is used).
>> See corosync-cfgtool(8) for more information.
> 
> This makes me wonder: "Good old ping" had always been able to display the
> delay between request and response.
> As the message delay (token round-trip time)is also critical in corosync, I
> wonder why the current delay cannot be displayed by corosync-cfgtool for
> example. My expectation is that the delay will go up significantly when load

There is latency stored in stats map (corosync-cmapctl -m stats) so I 
can image to display that in the corosync-cfgtool output.

> increases, and maybe manual "re-tuning" could be done before the infamous
> "retransmit timeout" kicks in.

Yup (actually ideally automatic but that's long term task).

Honza

> 
>>
>>    - The API for cfg tracking was fixed so it now working again. This API
>> was removed during the Corosync 2 development cycle and it means that
>> shutdown tracking (using cfg_try_shutdown()) had stopped working.
>>
>> Now it is back, so an application may register to receive a callback
>> when corosync is stopped cleanly (using corosync-cfgtool -H) and can
>> also prohibit corosync from stopping.
>>
>> There is a new --force option (which is now the default in the systemd
>> unit file/init script) which will always cause Corosync to shut down.
>>
>> This feature is going to be used by an as-yet unreleased Pacemaker
>> version (currently in the master branch) to veto corosync shutdown.
>>
>> Complete changelog for 3.1.1:
>>
>>       Christine Caulfield (4):
>>             cfg: New API to get extended node/link infomation
>>             cfg: Reinstate cfg tracking
>>             test: Add testcfg to exercise some cfg functions
>>             main: Close race condition when moving to statedir
>>
>>       Dan Streetman (2):
>>             main: Check memlock rlimit
>>             totemknet: retry knet_handle_new if it fails
>>
>>       Fabio M. Di Nitto (5):
>>             pkgconfig: export LOGDIR in corosync.pc
>>             configure: detect and init pkg-config with macro
>>             configure: drop dead code
>>             configure: move exec_prefix sanitize
>>             configure: drop unnecessary check and define
>>
>>       Ferenc Wágner (1):
>>             The ring id file needn't be executable
>>
>>       Jan Friesse (4):
>>             spec: Add isa version of corosync-devel provides
>>             totemknet: Check both cipher and hash for crypto
>>             cfg: Improve nodestatusget versioning
>>             init: Use corosync-cfgtool for shutdown
>>
>>       Johannes Krupp (1):
>>             totemconfig: fix integer underflow and logic bug
>>
>>       liangxin1300 (1):
>>             totemconfig: change udp netmtu value as a constant
>>
>>
>> Upgrade is highly recommended.
>>
>> Thanks/congratulations to all people that contributed to achieve this
>> great milestone.
>>
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> 
> 
> 
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