linux-kernel - Re: EXT4 corruption on Linus latest tree.

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Message-ID: <20130227165621.GA8834@redhat.com>
Date:	Wed, 27 Feb 2013 11:56:21 -0500
From:	Dave Jones <davej@...hat.com>
To:	"Theodore Ts'o" <tytso@....edu>, Borislav Petkov <bp@...en8.de>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-ext4@...r.kernel.org
Subject: Re: EXT4 corruption on Linus latest tree.

On Wed, Feb 27, 2013 at 11:44:17AM -0500, Theodore Ts'o wrote:
 > On Wed, Feb 27, 2013 at 11:04:46AM -0500, Dave Jones wrote:
 > >  > > EXT4-fs error (device sdb1): htree_dirblock_to_tree:919: inode #172235804: block 152052301: comm ls: bad entry in directory: rec_len is smaller than minimal - offset=0(0), inode=0, rec_len=0, name_len=0
 > > 
 > > Yeah, looks similar.  The missing files/dirs reappeared when I
 > > booted an older kernel, so it looks like the corruption doesn't
 > > hit the disk.  Fsck (1.42.5) didn't find anything either.
 > 
 > I suspect I see the problem...   can you send me the results of 
 > 
 >   debugfs -R "stat <172235804>" /dev/sdb1
 > 
 > to confirm?

debugfs 1.42.5 (29-Jul-2012)
Inode: 172235804   Type: directory    Mode:  0775   Flags: 0x80000
Generation: 1174354732    Version: 0x00000000:00000055
User:  1000   Group:  1000   Size: 4096
File ACL: 0    Directory ACL: 0
Links: 24   Blockcount: 8
Fragment:  Address: 0    Number: 0    Size: 0
 ctime: 0x512d0fdc:71fe3000 -- Tue Feb 26 14:41:16 2013
 atime: 0x512d106e:5a143300 -- Tue Feb 26 14:43:42 2013
 mtime: 0x512d0fdc:71fe3000 -- Tue Feb 26 14:41:16 2013
crtime: 0x50e76c35:1d69aad8 -- Fri Jan  4 18:56:37 2013
Size of extra inode fields: 28
Extended attributes stored in inode body: 
  selinux = "unconfined_u:object_r:file_t:s0\000" (32)
EXTENTS:
(0):688923213


That took about 2 minutes to run btw, expected ?

	Dave


 
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