Hi,

I attached a patch to enhance the LVM agent with the capability to set a tag on 
the VG (set_hosttag = true) in conjunction with a volume_list filter this can 
prevent to activate a VG on multiple host. Unfortunately active VGs will stay 
active in case of unclean operation.
The tag is always the hostname.
Some configuration hints can be found here: 
http://sources.redhat.com/cluster/wiki/LVMFailover

Cheers,
Ulf
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Attachment: LVM.patch
Description: Binary data

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