[Cluster-devel] [PATCH 2/3] dlm_controld: full check for member changes
lhh at redhat.com
Wed Sep 28 20:30:17 UTC 2011
On 09/28/2011 12:37 PM, David Teigland wrote:
> cman members are queried in response to a callback,
> and members sometimes leave and rejoin between queries
> (e.g. when they leave and rejoin before corosync
> detects they left.)
> This means that simply checking if a node is a member
> in consecutive queries sometimes misses events. We
> need to compare the incarnation numbers of members
> from consecutive queries to avoid this.
I was confused initially by the static ringid seq since its contents are
only used in the statechange() function, but it's consistent with other
variables and is useful for debugging, so ACK.
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