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Re: [Qemu-devel] [PATCH 00/22] dataplane: use QEMU block layer


From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH 00/22] dataplane: use QEMU block layer
Date: Tue, 6 May 2014 15:30:21 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Mon, May 05, 2014 at 02:46:09PM +0200, Christian Borntraeger wrote:
> On 05/05/14 14:05, Stefan Hajnoczi wrote:
> > On Mon, May 05, 2014 at 11:17:44AM +0200, Christian Borntraeger wrote:
> >> On 01/05/14 16:54, Stefan Hajnoczi wrote:
> >>> This patch series switches virtio-blk data-plane from a custom Linux AIO
> >>> request queue to the QEMU block layer.  The previous "raw files only"
> >>> limitation is lifted.  All image formats and protocols can now be used 
> >>> with
> >>> virtio-blk data-plane.
> >>
> >> Nice. Is there a git branch somewhere, so that we can test this on s390?
> > 
> > Hi Christian,
> > I'm getting to work on v2 but you can grab this v1 series from git in
> > the meantime:
> > 
> > https://github.com/stefanha/qemu.git bdrv_set_aio_context
> > 
> > Stefan
> > 
> 
> In general the main path seems to work fine.
> 
> With lots of devices (one qcow2, 23 raw scsi disks)
> I get a hang on shutdown. kvm_stat claims that nothing is going on any more, 
> but somehow threads are stuck in ppoll.

Thanks for the debugging info and testing the fix on IRC.

I will include it in the next revision.

Stefan



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