[ClusterLabs] corosync 2.4 CPG config change callback

Jan Friesse jfriesse at redhat.com
Tue Apr 24 12:38:55 EDT 2018


> Hi Honza
> On 4/6/18 10:59 AM, Jan Friesse wrote:
>> Thomas Lamprecht napsal(a):
>>> Am 03/09/2018 um 05:26 PM schrieb Jan Friesse:
>>>> I've tested it too and yes, you are 100% right. Bug is there and it's
>>>> pretty easy to reproduce when node with lowest nodeid is paused. It's
>>>> slightly harder when node with higher nodeid is paused.
>>> Do you were able to make some progress on this issue?
>> Ya, kind of. Sadly I had to work on different problem, but I'm expecting to sent patch next week.
> I guess the different problems where the ones related to the issued CVEs :)


Also I've spent quite a lot of the time thinking about best possible 
solution. CPG is quite old, it was full of weird bugs and risk of 
breakage is very high.

Anyway, I've decided to not to try hack what is apparently broken and 
just go for risky but proper solution (= needs a LOT more testing, but 
so far looks good).

Patch is in PR (needle): https://github.com/corosync/corosync/pull/347


>>> We'd really like a fix for this, so if there's anything I can do to help
>>> just hit me up. :)
>> Testing would be welcomed.
> Have you anything we could test already?
> Our freeze for our next release is in sight, so it would be really great
> if we had an upstream accepted resolution for this issue until then.
> cheers,
> Thomas

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