Re: ext4 fails on ext2 filesystems

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Hi Theodore,

Theodore Tso schrieb am Sat 17. Jan, 21:38 (-0500):
> On Sun, Jan 18, 2009 at 02:35:16AM +0100, Jörg Sommer wrote:
> > 
> > But when remounting the filesystem read/write and changing a file, the
> > changes are written to the filesystem, but it's remounted readonly
> > immediatly. I've set the mount option remount-ro.
> > 
> > [  203.082300] EXT4 FS on hda3, no journal
> > [  205.746713] EXT4-fs error (device hda3): ext4_free_data: circular indirect block detected, inode=165056, block=184476
> > 
> 
> Can you do me a favor?  Can you run debugfs /dev/hda3, and then run
> the debugfs command: "stat <165056>"?  

I've reproduced the error, because I've ran a fsck in the meantime:

% dmesg |tail G -F EXT
[24648.457402] EXT4 FS on hda3, no journal
[25253.227881] EXT4-fs error (device hda3): ext4_free_data: circular indirect block detected, inode=165056, block=184476

# debugfs /dev/hda3 <<<$'stat <165056>\ntestb 184476\nquit'
debugfs 1.41.3 (12-Oct-2008)
debugfs:  stat <165056>
Inode: 165056   Type: regular    Mode:  0644   Flags: 0x0
Generation: 2419652156    Version: 0x00000000:00000001
User:     0   Group:     0   Size: 0
File ACL: 0    Directory ACL: 0
Links: 0   Blockcount: 0
Fragment:  Address: 0    Number: 0    Size: 0
 ctime: 0x4972fd07:7463285e -- Sun Jan 18 10:57:27 2009
 atime: 0x4972fd06:acc79ebb -- Sun Jan 18 10:57:26 2009
 mtime: 0x4972fd07:7463285e -- Sun Jan 18 10:57:27 2009
crtime: 0x06fd7249:acc79ebb -- Wed Sep 19 08:52:41 1973
dtime: 0x4972fd07 -- Sun Jan 18 10:57:27 2009
Size of extra inode fields: 28
BLOCKS:

debugfs:  testb 184476
Block 184476 not in use
debugfs:  quit

Bye, Jörg.
-- 
Treffen sich zwei Funktionen.
Sagt die eine: „Verschwinde oder ich differenzier' dich!“
Erwidert die andere: „Ätsch, ich bin exponentiell!“

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