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Date: Sat, 10 Oct 2009 05:26:18 +0200
From: Maxim Levitsky <maximlevitsky@...il.com>
To: linux-kernel <linux-kernel@...r.kernel.org>
Cc: linux-pm <linux-pm@...ts.linux-foundation.org>
Subject: ext4 filesystem corruption
I have more information on that issue.
First of all this isn't related to s2ram/disk.
Second, this happened here again 3 times.
Now kernel complains loudly about access to freed inode.
After a reboot fsck tells the following:
- Some directory entries point to freed inodes,
Which means these files are gone, but I never deleted some of them
- Some inodes have shared blocks
- Some orpahaned inodes found
- Free block counts/bitmaps corrupted.
That all happens without any s2ram/disk cycle.
However, yet an unusual situation did happen today.
I had installed an update to mountall ubuntu package, and it hosed all
boot process.
I had to reboot many times, and once did hold the power button for 4
seconds.
I also used often the SYSRQ+U/SYSRQ+B tool.
On the contrary, I did several s2disk cycles, and one did fail, but
there was no corruption.
I must say that until now, I had never seen any ext3/ext4 corruption,
even though there were many many crashes, power failures, forced
reboots, etc...
Best regards,
Maxim Levitsky
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