* MD RAID1 deadlock on failed disk
@ 2010-10-26 22:32 Hubert Tonneau
0 siblings, 0 replies; 3+ messages in thread
From: Hubert Tonneau @ 2010-10-26 22:32 UTC (permalink / raw)
To: linux-raid
Hi,
The configuration is:
Perc H200 controler configured with no RAID (mpt2sas driver),
2 SATA disks (sda and sdb),
Linux MD Sofware RAID1 (md0),
stock Linux 2.6.35.7 kernel.
I hotunplug the second (sdb) disk, and the result is:
. as expected, I can read sda device,
. as expected, any read to sdb device fails,
. unexpectedly, and read to md0 never returns.
No oops or thing like that in the kernel log.
I did not try the same with other kernel releases.
Regards,
Hubert Tonneau
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: MD RAID1 deadlock on failed disk
2010-10-27 0:18 MD RAID1 deadlock on failed disk Hubert Tonneau
@ 2010-10-26 23:56 ` Neil Brown
0 siblings, 0 replies; 3+ messages in thread
From: Neil Brown @ 2010-10-26 23:56 UTC (permalink / raw)
To: Hubert Tonneau; +Cc: linux-raid
On Wed, 27 Oct 2010 00:18:25 GMT
Hubert Tonneau <hubert.tonneau@fullpliant.org> wrote:
> 2.6.32.24 kernel worked fine.
Is this repeatable.
i.e. every time you pull a device on a 2.6.35.7 kernel it hangs?
If you can reproduce it, could you
echo t > /proc/sysrq-trigger
and post the output that is written to the kernel log.
Thanks,
NeilBrown
>
> Hubert Tonneau wrote:
> >
> > Hi,
> >
> > The configuration is:
> > Perc H200 controler configured with no RAID (mpt2sas driver),
> > 2 SATA disks (sda and sdb),
> > Linux MD Sofware RAID1 (md0),
> > stock Linux 2.6.35.7 kernel.
> >
> > I hotunplug the second (sdb) disk, and the result is:
> > . as expected, I can read sda device,
> > . as expected, any read to sdb device fails,
> > . unexpectedly, and read to md0 never returns.
> >
> > No oops or thing like that in the kernel log.
> > I did not try the same with other kernel releases.
> >
> > Regards,
> > Hubert Tonneau
>
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: MD RAID1 deadlock on failed disk
@ 2010-10-27 0:18 Hubert Tonneau
2010-10-26 23:56 ` Neil Brown
0 siblings, 1 reply; 3+ messages in thread
From: Hubert Tonneau @ 2010-10-27 0:18 UTC (permalink / raw)
To: linux-raid
2.6.32.24 kernel worked fine.
Hubert Tonneau wrote:
>
> Hi,
>
> The configuration is:
> Perc H200 controler configured with no RAID (mpt2sas driver),
> 2 SATA disks (sda and sdb),
> Linux MD Sofware RAID1 (md0),
> stock Linux 2.6.35.7 kernel.
>
> I hotunplug the second (sdb) disk, and the result is:
> . as expected, I can read sda device,
> . as expected, any read to sdb device fails,
> . unexpectedly, and read to md0 never returns.
>
> No oops or thing like that in the kernel log.
> I did not try the same with other kernel releases.
>
> Regards,
> Hubert Tonneau
^ permalink raw reply [flat|nested] 3+ messages in thread
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