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From: Kumar Gala <galak@kernel.crashing.org>
To: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.20 kernel hang with USB drive and vfat doing ftruncate
Date: Mon, 19 Feb 2007 16:27:03 -0600 [thread overview]
Message-ID: <3D8A0565-36F9-4216-839E-4B4815E9AC78@kernel.crashing.org> (raw)
In-Reply-To: <87ejolkcyt.fsf@duaron.myhome.or.jp>
On Feb 19, 2007, at 4:19 PM, OGAWA Hirofumi wrote:
> Kumar Gala <galak@kernel.crashing.org> writes:
>
>>>> I usually run the following twice to get the hang state:
>>>>
>>>> time ./trunc_test bar 100000000 &
>>>> time ./trunc_test baz 100000000 &
>>>>
>>>> I was wondering if anyone had any suggestions on what to poke at
>>>> next
>>>> to try and figure out what is going on.
>>>
>>> Can you check /sys/block/xxx/stat or something to make sure there is
>>> no outstanding IO request?
>>>
>>> It seems to be no response from the lower layer...
>>
>> Once the system locks up I dont have any ability to do anything.
>
> Ah, doesn't sysrq also work? If sysrq work, it can use to see IO
> request state with a patch.
Yeah, got sysrq working today. If you can point me at the patch I
happy to apply it and get data.
- k
next prev parent reply other threads:[~2007-02-19 22:28 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-16 19:54 Kumar Gala
2007-02-18 16:10 ` OGAWA Hirofumi
2007-02-19 21:58 ` Kumar Gala
2007-02-19 22:19 ` OGAWA Hirofumi
2007-02-19 22:27 ` Kumar Gala [this message]
2007-02-20 17:20 ` OGAWA Hirofumi
2007-02-19 22:06 ` Kumar Gala
2007-02-21 20:18 ` OGAWA Hirofumi
2007-02-21 20:57 ` Andrew Morton
2007-02-21 21:22 ` [linux-usb-devel] " Alan Stern
2007-02-21 21:31 ` Andrew Morton
2007-02-21 21:50 ` Alan Stern
2007-02-21 22:54 ` Andrew Morton
2007-02-22 7:40 ` Kumar Gala
2007-02-22 18:20 ` Kumar Gala
2007-02-22 21:57 ` Andrew Morton
[not found] <fa.bxsB54F+7+006rE+o/VWUj5keQk@ifi.uio.no>
2007-02-16 23:10 ` Robert Hancock
2007-02-17 5:05 ` Kumar Gala
[not found] ` <fa.zK5W70l1vhk1YNxuwxFwZ8t1uIs@ifi.uio.no>
[not found] ` <fa.qFxa41A3LU3cQ19L+5DTEFMtCEY@ifi.uio.no>
2007-02-20 5:28 ` Robert Hancock
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