Bug 122385

Summary:	IDE disk corruptor in 2.6.x kernels
Product:	[Fedora] Fedora	Reporter:	Alan Cox <alan>
Component:	kernel	Assignee:	Arjan van de Ven <arjanv>
Status:	CLOSED RAWHIDE	QA Contact:	Brian Brock <bbrock>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	barryn, mitr, pawsa, wtogami
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-05-10 00:26:05 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	114961

Description Alan Cox 2004-05-03 22:05:59 UTC

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 2004-05-04 01:53:52 UTC

I have seen this happen to me too.

Comment 2 Barry K. Nathan 2004-05-09 23:46:23 UTC

I've seen it too, but to me (in my testing) it seems fixed in 356.

Comment 3 Warren Togami 2004-05-10 00:26:05 UTC

Yes, the recent 35X kernels had patches for IDE cache flushing during
shutdown/reboot.  Arjan should we close this?