[ClusterLabs] [Cluster-devel] DLM connection channel switch take too long time (> 5mins)

Gang He ghe at suse.com
Thu Mar 8 21:03:19 EST 2018

Hello David,

If sctp implementation did not fix this problem, there is any workaround for a two-rings cluster?
Could we use TCP protocol in DLM under a two-rings cluster to by-pass connection channel switch issue?


>>  I use active rrp_mode in corosync.conf and reboot the cluster to let the 
> configuration effective.
>> But, the about 5 mins hang in new_lockspace() function is still here.
> The last time I tested connection failures with sctp was several years
> ago, but I recall seeing similar problems.  I had hoped that some of the
> sctp changes might have helped, but perhaps they didn't.
> Dave

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