Re: xen-blkfront: Don't send closing notification to backend inblkfront_closing()

From: Konrad Rzeszutek Wilk
Date: Sat Jul 09 2011 - 09:12:17 EST


> >> 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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