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xen-devel
[Xen-devel] Re: xen-blkfront: Don't send closing notification to backend
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To: |
Joe Jin <joe.jin@xxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: xen-blkfront: Don't send closing notification to backend in blkfront_closing() |
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From: |
Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> |
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Date: |
Sat, 9 Jul 2011 09:11:53 -0400 |
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Cc: |
Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Ian Campbell <ian.campbell@xxxxxxxxxx>, Kurt C Hackel <KURT.HACKEL@xxxxxxxxxx>, Greg Marsden <greg.marsden@xxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, annie.li@xxxxxxxxxx, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Jens Axboe <jaxboe@xxxxxxxxxxxx>, Daniel Stodden <daniel.stodden@xxxxxxxxxx> |
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Delivery-date: |
Sat, 09 Jul 2011 06:13:08 -0700 |
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Mutt/1.5.21 (2010-09-15) |
> >> 5. umount the partition/disk in guest, command hung. exactly at here, any
> >> IO request to the partition/disk will hang.
> >
> > I get that with the patch and without it:
> >
> > sh-4.1#
> > sh-4.1# [ 519.814048] block xvda: device/vbd/51712 was hot-unplugged, 1
> > stale handles
> >
> > sh-4.1# df -h
> > Filesystem Size Used Avail Use% Mounted on
> > none 490M 120K 490M 1% /dev
> > none 490M 131M 359M 27%
> > /lib/modules/3.0.0-rc6-00052-g3edce4b-dirty
> > shm 10M 0 10M 0% /dev/shm
> > var_tmp 10M 0 10M 0% /var/tmp
> > /dev/xvda 20G 173M 19G 1% /test
> > sh-4.1# umount /test
> >
> > Any ideas?
>
> This caused by backend kthread stopped, any IO request to the real device
> will hang, that
> is the patch intend to resolving.
I get this hang with the patch (and without). Is there a corresponding patch to
the backend?
(The backend is the same exact version as DomU - 3.0-rc6 + #stable/for-jens).
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