Re: 2.4.35 SMP: ext3_readdir: bad entry in directory #323888: rec_len is smaller than minimal

From: Jan Kara
Date: Tue Sep 18 2007 - 11:12:20 EST


Hello,

> I got a bunch of these into dmesg:
>
> EXT3-fs error (device sd(8,2)): ext3_readdir: bad entry in directory #323880: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0
> EXT3-fs error (device sd(8,2)): ext3_readdir: bad entry in directory #323888: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0
> EXT3-fs error (device sd(8,2)): ext3_readdir: bad entry in directory #323882: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0
>
> The kernel is 2.4.35 SMP, dual-processor. The scsi driver is Fusion MPT SCSI
> Host driver 2.05.16.
>
> The device is /dev/sda2, root fs.
>
> One line per each directory had dropped into dmesg each night (I think
> during updatedb) before I noticed.
Interesting. Can you look (using debugfs) on the content of the
/usr/share/doc/ directory? It seems like parts of it have been zeroed
out...

> The directories in question have not been written to for ages:
>
> >debugfs /dev/sda2
> debugfs: ncheck 323888
> Inode Pathname
> 323888 /usr/share/doc/logcheck-1.1.1
> debugfs: ncheck 323882
> Inode Pathname
> 323882 /usr/share/doc/dev86-0.15.5
> debugfs: ncheck 323880
> Inode Pathname
> 323880 /usr/share/doc/mod_put-1.3
>
> The hardware _should_ be solid, although I can never 100% sure rule out disk
> level corruption.

Honza
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