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xen-devel
[Xen-devel] Re: xen-blkfront: Don't send closing notification to backend
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To: |
Konrad Rzeszutek Wilk <konrad.wilk@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: |
Joe Jin <joe.jin@xxxxxxxxxx> |
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Date: |
Mon, 11 Jul 2011 15:53:24 +0800 |
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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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Mon, 11 Jul 2011 00:54:44 -0700 |
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<4E16AE55.50500@xxxxxxxxxx> <20110708160414.GA30120@xxxxxxxxxxxx> <4E17A01F.8060505@xxxxxxxxxx> <20110709131153.GA25916@xxxxxxxxxxxx> |
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Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc15 Lightning/1.0b3pre OracleBeehiveExtension/1.0.0.2-OracleInternal ObetStats/CATLAF_1292475699435-498544290 Thunderbird/3.1.10 |
On 07/09/11 21:11, Konrad Rzeszutek Wilk wrote:
>>>> 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).
My guest using linux-3.0 the latest kernel, backend based 2.6.32 kernel.
Without the patch, xm block-detach timeout and umount hang, with the patch xm
block-detach
timeout but umount works fine.
Thanks,
Joe
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