[Linux-cluster] Preventing clvmd timeouts

Digimer linux at alteeve.com
Thu Jan 26 13:55:45 UTC 2012

On 01/26/2012 08:45 AM, Devrim GÜNDÜZ wrote:
> Hi,
> This is RHEL 6.2, where all packages are up2date.
> For a simple 2-node cluster, clvmd cannot start, because it cannot scan
> clustered LVs -- if one of the nodes are down. It simply hangs in the
> vgscan phase.
> Is that the expected behaviour? If not, what is the recommended way to
> get rid of this?
> Regards,

I am guessing that you do not have fencing configured and/or tested.
When a node is lost, fenced calls DLM which then blocks locking until a
fence call succeeds. Without fencing, this will hang all things using
DLM, including clustered LVM.

E-Mail:              digimer at alteeve.com
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