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Re: [Qemu-devel] [PATCH v2 10/11] blockdev: Block device IO during block

From: Fam Zheng
Subject: Re: [Qemu-devel] [PATCH v2 10/11] blockdev: Block device IO during blockdev-backup transaction
Date: Wed, 13 May 2015 23:34:31 +0800
User-agent: Mutt/1.5.23 (2014-03-12)

On Wed, 05/13 17:08, Paolo Bonzini wrote:
> On 13/05/2015 16:55, Fam Zheng wrote:
> > In your idea, who will block PAUSE, and why?
> For example, blockdev-backup/drive-backup can block PAUSE on the target.
>  But maybe they only need to add an op blocker notifier, and use it to
> block device I/O on the source and drain it.  So your idea is safe.  Good!

Yes, sounds right.

> Another idea was to block PAUSE in virtio-scsi until it's fixed.

I prefer to follow up another series to fix virtio-scsi, if my idea works :)


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