Re: [PATCH] virtio-blk: fallback to draining the queue if barrier ops are not supported

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On Wed, Oct 14, 2009 at 7:03 AM, Avi Kivity <avi@xxxxxxxxxx> wrote:
> Early implementations of virtio devices did not support barrier operations,
> but did commit the data to disk.  In such cases, drain the queue to emulate
> barrier operations.

would this help on the (i think common) situation with XFS on a
virtio-enabled VM, using LVM-backed storage; where LVM just loses
barriers.

-- 
Javier
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