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From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 08 Dec 2009 09:48:50 +0100
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Subject: [Qemu-devel] Re: [PATCH VERSION 2] Disk image shared and exclusive
	locks.
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To: qemu-devel@nongnu.org

On 12/07/2009 04:06 PM, Anthony Liguori wrote:
> For GPFS-like shared filesystems (:-P) we would always use lock=off.  It
> wouldn't protect us from a non-cluster aware writer.

Management tools can always do this the right way---even with 
partition-grained locking if needed.

Paolo