Bug 5077

Summary:	unexpected "DT_GETPAGE: dtree page corrupt" errors
Product:	File System	Reporter:	Max Alekseyev (relf)
Component:	JFS	Assignee:	Dave Kleikamp (shaggy)
Status:	RESOLVED PATCH_ALREADY_AVAILABLE
Severity:	high
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.12	Subsystem:
Regression:	---	Bisected commit-id:

Description Max Alekseyev 2005-08-16 16:19:13 UTC

Distribution: debian-amd64

I'm using JFS quite intensively and it happens that once in 2-3 weeks of uptime
the following error appears:
ERROR: (device hdb1): DT_GETPAGE: dtree page corrupt

Sometimes it is possible to fix the error "on-fly" with fsck.jfs (that found
some files cross-linked though), but sometimes attempt to use the volume fixed
with fsck.jfs causes more severe problem described in bug 4894 that forces
emergency reboot of the system.

Of course, there is no reason for the errors to appear. My system is doing just
regular file I/O operations, nothing harmful.

Comment 1 Dave Kleikamp 2005-08-17 12:16:33 UTC

Is this the same filesystem as in bug #5073?  If it is a case-insensitive
filesystem, I'm wondering if that bug may be the cause of the problems.  Having
bogus dentries in the dcache may possibly lead to some confusion.  I'd like to
know if I should follow that theory, or whether I could rule it out.  Of course,
if it happens again after applying the patch for 5073, I can rule it out as well.

Comment 2 Max Alekseyev 2005-08-18 15:13:18 UTC

Yes, it the same filesystem as in bug 5073. But I've caught bug 5073 just by
chance, so I could not say from my experience that the bug 5073 and the current
bug are related. 
Anyway I'm using a patched JFS driver now and we will see if it change anything.

Comment 3 Dave Kleikamp 2005-08-31 09:50:14 UTC

I'm going to assume this is fixed with bug 5073.  Please reopen it if you see it
again.