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Bug 122385 - IDE disk corruptor in 2.6.x kernels
IDE disk corruptor in 2.6.x kernels
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
All Linux
high Severity high
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
Blocks: FC2Blocker
  Show dependency treegraph
Reported: 2004-05-03 18:05 EDT by Alan Cox
Modified: 2007-11-30 17:10 EST (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-05-09 20:26:05 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Alan Cox 2004-05-03 18:05:59 EDT
IDE in 2.4 issues cache flush and drive suspend on shutdown. IDE in
2.6 does it on suspend but not on shutdown it seems. 

The following appears to demonstrate the problem.

Set up init to randomly twiddle a load files, then mount -o ro /
then reboot.

Run for a day

Stop and fsck it

Not only is the corruption slow and insidious the re-ordering of I/O
seems to mean ext3 thinks the disk is clean many of the times. Only
the fsck shows the mess.

Bartlomiej concurs
" I need to re-add notify_reboot which somebody (who was that stupid?)
removed in 2.5."

and suspects he too is seeing it on a Hitachi 80G disk.
Comment 1 Warren Togami 2004-05-03 21:53:52 EDT
I have seen this happen to me too.
Comment 2 Barry K. Nathan 2004-05-09 19:46:23 EDT
I've seen it too, but to me (in my testing) it seems fixed in 356.
Comment 3 Warren Togami 2004-05-09 20:26:05 EDT
Yes, the recent 35X kernels had patches for IDE cache flushing during
shutdown/reboot.  Arjan should we close this?

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