[Linux-cluster] clvmd hangs on startup

Jeff Sturm jeff.sturm at eprize.com
Tue Mar 8 19:02:35 UTC 2011

> -----Original Message-----
> From: linux-cluster-bounces at redhat.com
[mailto:linux-cluster-bounces at redhat.com]
> On Behalf Of Valeriu Mutu
> Sent: Tuesday, March 08, 2011 12:12 PM
> I think the problem is solved. I was using a 9000bytes MTU on the Xen
> machines' iSCSI interface. Switching back to 1500bytes MTU caused the
clvmd to start
> working.

That'll do it.  Jumbo frames with Xen are a little tricky, so it's
easiest to stick with MTU 1500, as you have done.  (If you really want
jumbo frames, change the MTU on the dom0 vif interfaces to match, and if
you use bridging, ditto for the bridge device and real interfaces.)

I suspect if your "dd" test had used a block size like 4096, rather than
1024, it would have similarly failed.


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