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Re: [Qemu-devel] [PATCH v4 00/27] block: Lock images when opening

From: Richard W.M. Jones
Subject: Re: [Qemu-devel] [PATCH v4 00/27] block: Lock images when opening
Date: Tue, 10 May 2016 09:43:04 +0100
User-agent: Mutt/1.5.20 (2009-12-10)

On Tue, May 10, 2016 at 09:14:26AM +0100, Richard W.M. Jones wrote:
> However I didn't test the write-shareable case (the libvirt
> <shareable/> flag which should map to a shared lock -- is that right Dan?).

To Dan (mainly): I think setting the <shareable/> flag in libvirt only
sets cache=unsafe on the qemu drive (it may have other effects for
virtlockd).  Should there be an extra qemu drive flag to communicate
that the drive is write-shareable?


Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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