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SubjectRe: Ext4 corruption that will not go away
Date
On Sunday 30 August 2009 10:24:56 Nick Dokos wrote:
> > Hi,
> >
> > I am running 2.6.31-rc8+ and have ext4 corruption that will not go away.
> >
> > My root fs is ext4 on sdb3. I have moved the directory with corruption into lost+found and booted to a rescuse
> > system (arch linux) and run fsck.ext4 on the filesystem, which then reports its clean... Booting back into my
> > gentoo system and attempting to remove the xx directory from lost+found gives:
> >
> > [ 172.408799] EXT4-fs error (device sdb3): ext4_ext_check_inode: bad header/extent in inode #706801: invalid magic - magic 0, entries 0, max 0(0), depth 0(0)
> > [ 172.429410] EXT4-fs error (device sdb3): ext4_ext_check_inode: bad header/extent in inode #706801: invalid magic - magic 0, entries 0, max 0(0), depth 0(0)
> > [ 172.449920] EXT4-fs error (device sdb3): ext4_ext_check_inode: bad header/extent in inode #706801: invalid magic - magic 0, entries 0, max 0(0), depth 0(0)
> >
> > The above is repeatable.
> >
> > How can I _really_ clean this fs? What info is needed to help the process?
> >
>
> The first two pieces of information needed would be the version of e2fsprogs
> that you are running (e2fsck -V) and the stat of inode 706801:
>
> debugfs -R 'stat <706801>' /dev/sdb3
>

e2fsck 1.41.9 (22-Aug-2009)
Using EXT2FS Library version 1.41.9, 22-Aug-2009

Inode: 706801 Type: regular Mode: 0644 Flags: 0x80000
Generation: 28075061 Version: 0x00000000:00000001
User: 0 Group: 0 Size: 1442
File ACL: 0 Directory ACL: 0
Links: 1 Blockcount: 0
Fragment: Address: 0 Number: 0 Size: 0
ctime: 0x4a8beb6a:a8c2e6e4 -- Wed Aug 19 08:09:14 2009
atime: 0x4a8beb6a:00000000 -- Wed Aug 19 08:09:14 2009
mtime: 0x4a8b17d9:00000000 -- Tue Aug 18 17:06:33 2009
crtime: 0x4a8beb6a:9e456724 -- Wed Aug 19 08:09:14 2009
Size of extra inode fields: 28
EXTENTS:
and of 76804 which also has a problem

Inode: 706804 Type: regular Mode: 0644 Flags: 0x80000
Generation: 4140131203 Version: 0x00000000:00000001
User: 1000 Group: 100 Size: 523
File ACL: 0 Directory ACL: 0
Links: 1 Blockcount: 0
Fragment: Address: 0 Number: 0 Size: 0
ctime: 0x4a95c957:348db0b8 -- Wed Aug 26 19:46:31 2009
atime: 0x4a991f2b:cf3a606c -- Sat Aug 29 08:29:31 2009
mtime: 0x4a95c957:348db0b8 -- Wed Aug 26 19:46:31 2009
crtime: 0x4a95c957:348db0b8 -- Wed Aug 26 19:46:31 2009
Size of extra inode fields: 28
EXTENTS:
Hope this helps
Ed


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