* Re: btrfs caused kernel oops warning
[not found] <1284691538.30133.9.camel@sli10-conroe.sh.intel.com>
@ 2010-09-22 12:13 ` Chris Mason
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From: Chris Mason @ 2010-09-22 12:13 UTC (permalink / raw)
To: Shaohua Li; +Cc: Linux Btrfs, Chen, Tim C
On Fri, Sep 17, 2010 at 10:45:38AM +0800, Shaohua Li wrote:
> Chris,
> we are seeing kernel warning from time to time when doing btrfs test.
> That issue is hard to trigger, but it sometimes pop up. we saw this in
> both fio and ffsb test in several kernel version. Below is an example.
> do you have idea about it? we are glad to test patches/do debug if you
> can share some ideas.
Interesting. We're backing up behind the ordered operations mutex, but
I don't see the stack trace from the process currently holding it.
Could you please do a sysrq-w and record the results? We need to see
who we are stuck on.
My guess is we're stuck waiting for IO, but the traces will say for
sure.
-chris
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