LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.20 kernel hang with USB drive and vfat doing ftruncate
Date: Tue, 20 Feb 2007 07:19:06 +0900	[thread overview]
Message-ID: <87ejolkcyt.fsf@duaron.myhome.or.jp> (raw)
In-Reply-To: <04C493C2-1D8D-41B7-955A-F5C5B08023BB@kernel.crashing.org> (Kumar Gala's message of "Mon\, 19 Feb 2007 15\:58\:53 -0600")

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.
-- 
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

  reply	other threads:[~2007-02-19 22:19 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 [this message]
2007-02-19 22:27       ` Kumar Gala
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87ejolkcyt.fsf@duaron.myhome.or.jp \
    --to=hirofumi@mail.parknet.co.jp \
    --cc=galak@kernel.crashing.org \
    --cc=linux-kernel@vger.kernel.org \
    --subject='Re: 2.6.20 kernel hang with USB drive and vfat doing ftruncate' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).