Bug 201650 – directory corruption in Linux 2.6.17 with xfs

Bug 201650 - directory corruption in Linux 2.6.17 with xfs

Summary:	directory corruption in Linux 2.6.17 with xfs

Status:	CLOSED ERRATA

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	kernel (Show other bugs)
Sub Component:
Version:	5
Hardware:	All Linux

Priority	medium Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Eric Sandeen
QA Contact:	Brian Brock
Docs Contact:

URL:	http://oss.sgi.com/projects/xfs/faq.h...
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2006-08-07 18:49 EDT by Thomas Antony
Modified:	2007-11-30 17:11 EST (History)
CC List:	2 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2006-08-11 02:18:07 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Linux Kernel	6757	None	None	None	Never

Groups: None (edit)

Description Thomas Antony 2006-08-07 18:49:10 EDT

Description of problem:
The linux kernel 2.6.17 can cause directory corruption with xfs formatted
partitions.
In the Linux kernel 2.6.17 release a subtle bug was accidentally introduced into
the XFS directory code by some "sparse" endian annotations. This bug was
sufficiently uncommon (it only affects a certain type of format change, in Node
or B-Tree format directories, and only in certain situations).

Version-Release number of selected component (if applicable):
kernel-2.6.17-*


How reproducible:
update the kernel to a 2.6.17 version and have a xfs partiton formatted with xfs
and mounted r/w.

Steps to Reproduce:
1. format a partition with xfs
2. update to a 2.6.17 kernel
3. mount it r/w and do crreate/modifiy some data
  
Actual results:
directory corruption and data loss

Expected results:
a stable filesystem

Additional info:
http://oss.sgi.com/projects/xfs/faq.html#dir2

Comment 1 Dave Jones 2006-08-08 15:01:11 EDT

This should be fixed in the 2.6.17.8 based update currently in updates-testing
(due to move to final today/tomorrow) I think.  Eric ?

Comment 2 Eric Sandeen 2006-08-08 15:39:04 EDT

This should have been fixed in 2.6.17.7 actually.

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.17.7

grep for "XFS: corruption fix"

Also, xfsprogs v 2.8.10 will be needed to repair the damage...

Comment 3 Thomas Antony 2006-08-10 04:21:23 EDT

I have created a bug entry against xfsprogs, but did not get a response from
Jeff Garzik yet.
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=201654

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