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SubjectRe: 2.6.20-rc3-mm1: umount reiser4 FS stuck in D state
On Sat, Jan 06 2007, Laurent Riffard wrote:
> Le 05.01.2007 07:02, Andrew Morton a écrit :
> >Temporarily at
> >
> >http://userweb.kernel.org/~akpm/2.6.20-rc3-mm1/
> >
> >will appear later at
> >
> >ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20-rc3/2.6.20-rc3-mm1/
>
> Hello,
>
> got this with 2.6.20-rc3-mm1:
>
> =======================
> SysRq : Show Blocked State
>
> free sibling
> task PC stack pid father child younger older
> umount D C013135E 6044 1168 1150 (NOTLB)
> de591ae4 00000086 de591abc c013135e dff979c8 c012a6fe 00000046
> 00000007 dfd94ac0 128d3000 00000026 00000000 dfd94bcc dff979c8
> de591ae4 dffda038 00000002 dff979c0 dff979bc dff979c8 de591b10
> c012d600 dff979f8 00000000 Call Trace:
> [<c012d600>] synchronize_qrcu+0x70/0x8c
> [<c01bede4>] __make_request+0x4c/0x29b
> [<c01bd24b>] generic_make_request+0x1b0/0x1de
> [<c01bf354>] submit_bio+0xda/0xe2

That's certainly a barrier related hang. Since raid and XFS both hang as
well, it might be the same problem. I'll get it fixed up, don't expect
anything before monday though.

--
Jens Axboe

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