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Re: [Linux-cluster] Can't get past Segmentation Faults



I'm wondering if that didn't start this whole thing off...

If you want to test it, get all your volumes created, shutdown one machine, disable it's FC ports and restart it. Was clvmd barfing because of this? Could it see some, but not all of the devices.

Would the fix have been as simple as simply reenabling the ports to all the machines? I don't know...

I can't imagine your storage being trashed by the FC network. Even if the logical volume headers were destroyed, they can be brought back by vgcfgrestore. That would just leave the file systems. They have journaling. So assuming some rouge process didn't mess with the disk, they should be able to recover just fine as long as the storage (CLVM volumes) are visible.

 brassow

On Jan 24, 2007, at 1:29 PM, isplist logicore net wrote:

Good point and that was indeed an issue. Some of the ports WERE blocked. All
have since been cleared.

Mike


On Wed, 24 Jan 2007 13:28:28 -0600, Jonathan E Brassow wrote:
I would ensure that when the fencing occurred, that it didn't fence off

the devices on the brocade switch. I would log into the brocade switch
and ensure that all nodes are properly connected (and their ports are
not disabled).

brassow

On Jan 24, 2007, at 11:39 AM, isplist logicore net wrote:

On Wed, 24 Jan 2007 11:15:28 -0600, Jonathan E Brassow wrote:
are you using fibre channel fencing in your cluster?

Yes, Brocade switches with Xyratex chassis.

Mike


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