[Pacemaker] ignoring transitional memberships

Andrew Beekhof andrew at beekhof.net
Fri Feb 26 10:57:01 UTC 2010


Please send emails just once thankyou.

On Thu, Feb 25, 2010 at 6:32 PM, Alan Jones <falancluster at gmail.com> wrote:
> It appears from the code in lib/ais/plugin.c:pcmk_peer_update() that
> Pacemaker ignores
> transitional membership updates from Corosync.  It is my understanding that
> this information
> tells you which members have maintained synchronized state during
> transitions.  For example,
> view AB on both A and B followed by B alone on B followed by ABC on A would
> be proceeded
> by a transitional membership to exclude B on A to let A know that B is no
> longer in sync.  Is it
> safe to ignore these messages?

Not only safe but essential, otherwise B would kill A for no reason.
Transitional memberships are just corosync's way of saying "i;m still
working, but this is what I have so far".

> How is the CIB replicated?

Thats not related to the above question is it?




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