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Re: [Qemu-block] [PATCH v2 10/11] blockdev: Block device IO during block
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From: |
Fam Zheng |
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Subject: |
Re: [Qemu-block] [PATCH v2 10/11] blockdev: Block device IO during blockdev-backup transaction |
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Date: |
Wed, 13 May 2015 23:34:31 +0800 |
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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 :)
Fam
[Qemu-block] [PATCH v2 11/11] block: Block "device IO" during bdrv_drain and bdrv_drain_all, Fam Zheng, 2015/05/13
- Re: [Qemu-block] [PATCH v2 11/11] block: Block "device IO" during bdrv_drain and bdrv_drain_all, Paolo Bonzini, 2015/05/13
- Re: [Qemu-block] [PATCH v2 11/11] block: Block "device IO" during bdrv_drain and bdrv_drain_all, Fam Zheng, 2015/05/13
- Re: [Qemu-block] [PATCH v2 11/11] block: Block "device IO" during bdrv_drain and bdrv_drain_all, Paolo Bonzini, 2015/05/13
- Re: [Qemu-block] [PATCH v2 11/11] block: Block "device IO" during bdrv_drain and bdrv_drain_all, Fam Zheng, 2015/05/13
- Re: [Qemu-block] [PATCH v2 11/11] block: Block "device IO" during bdrv_drain and bdrv_drain_all, Paolo Bonzini, 2015/05/13
- Re: [Qemu-block] [Qemu-devel] [PATCH v2 11/11] block: Block "device IO" during bdrv_drain and bdrv_drain_all, Fam Zheng, 2015/05/13