linux-ext4 - [Bug 14354] Bad corruption with 2.6.32-rc1 and upwards

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Message-Id: <200910152340.n9FNemvs030841@demeter.kernel.org>
Date:	Thu, 15 Oct 2009 23:40:48 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 14354] Bad corruption with 2.6.32-rc1 and upwards

http://bugzilla.kernel.org/show_bug.cgi?id=14354

--- Comment #58 from Theodore Tso <tytso@....edu>  2009-10-15 23:40:47 ---
Alexey, where you doing anything in particular when you did the "echo c >
/proc/sysrq-trigger"?  Does it reproduce for you every single time?  

I did ("echo c > /proc/sysrq-trigger") while running a "make -j4" in an
e2fsprogs source tree, and after the reboot, both on the root logical volume
(where I have a ccache directory on an SSD drive) and my build logical volume
(where I have an e2fsprogs source and build tree) were just fine after
rebooting.

As I said, I'm having a devil of a time reproducing this.  I've tried power
failures (removing the battery and pulling the power cord) while the build was
taking place, suspending the system and then forcing a cold restart, suspending
the system and then pulling the power, using "echo c >  /proc/sysrq-trigger",
etc.   After each time, I've used e2croncheck to verify the sanity of my ssd
root partition, and (in case the problem is the ext4 journal replay), mounting
and then unmounting /kbuild, and then running e2fsck -f /dev/closure/kbuild.

In all cases, I've not had any file system inconsistencies.  (using 2.6.32-rc1,
2.6.32-rc3, and most recently, 2.6.32-rc4). I really need some help reproducing
this!

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