[Linux-cluster] Freeze with cmirror and cLVM

nagius at astek.fr nagius at astek.fr
Mon Dec 19 16:06:13 UTC 2011

Hello all,

We've got a problem using a mirrored and clustered LV within a 5 nodes  

Everything is fine, except when a node leave the cluster, with  
cman_tool leave, /etc/init/d/cman stop, electric poweroff or whatever.
In this case the storage just freeze on the others nodes, during 20  
seconds, until openais take into account the configuration change.

We can see this during the freeze in /var/log/messages :

 openais[3136]: [TOTEM] The token was lost in the OPERATIONAL state.
 kernel: device-mapper: dm-log-clustered: [1lXq0Alc] Request timed  
out: [DM_CLOG_MARK_REGION/405288] - retrying
 openais[3136]: [TOTEM] entering OPERATIONAL state.

I'm running lastest 5.7, with :
 - kernel-xen-2.6.18-274.12.1,
 - cman-2.0.115-85,
 - lvm2-cluster-2.02.84-6
 - cmirror-1.1.39-10
 - kmod-cmirror-xen-0.1.22-3

Is this a normal behavior ?

Thanks for help
Nicolas AGIUS

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