Re: [SLUG] FS errors

From: Eben King (eben01@verizon.net)
Date: Tue Jul 18 2006 - 16:40:16 EDT


On Tue, 18 Jul 2006, Ian C. Blenke wrote:

> Eben King wrote:
>
>> What could cause this?
>>
>> root@pc:/# /etc/init.d/sysklogd stop
>> * Stopping system log daemon...
>> /etc/init.d/sysklogd: line 71: /sbin/start-stop-daemon: cannot execute
>> binary file
>> [fail]
>>
>> root@pc:/# stat /sbin/start-stop-daemon
>> File: `/sbin/start-stop-daemon'
>> Size: 18520 Blocks: 40 IO Block: 4096 regular file
>> Device: 1602h/5634d Inode: 226463 Links: 1
>> Access: (0755/-rwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
>> Access: 2006-07-18 13:53:39.000000000 -0400
>> Modify: 2005-09-24 13:39:30.000000000 -0400
>> Change: 2006-01-30 17:45:06.000000000 -0500
>>
>> root@pc:/# lsattr /sbin/start-stop-daemon
>> ----------------- /sbin/start-stop-daemon
>>
>> root@pc:/#
>
>
> What do the following commands show:
>
> # file /sbin/start-stop-daemon
> # ldd /sbin/start-stop-daemon
>
> Also check to see if the file is full of nulls.
>
> # od -x /sbin/start-stop-daemon

Well it corrected itself in the mean time so any checks now would be
meaningless, but I'll be sure to check those if this happens again.

> If you see nothing but 0000's, the file has been zeroed out. We usually see
> this when file is open for writing when a system running XFS is powered off
> abruptly. Hooray for metadata journaled filesystems (where the actual data
> isn't journalled).

I'm not running XFS. Should I be? Is ext3 OK for a not-heavily-used
machine?

eben@pc:~$ mount
/dev/hdc2 on / type ext3 (rw,errors=remount-ro)
...

TTBOMK, all shutdown have been orderly and intentional.

FTR, those tests now produce:

eben@pc:~$ file /sbin/start-stop-daemon
/sbin/start-stop-daemon: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.0, dynamically linked (uses shared libs), stripped

eben@pc:~$ ldd /sbin/start-stop-daemon
         linux-gate.so.1 => (0xffffe000)
         libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7e62000)
         /lib/ld-linux.so.2 (0xb7f9e000)

-- 
-eben      QebWenE01R@vTerYizUonI.nOetP      http://royalty.no-ip.org:81
GEMINI:  Your birthday party will be ruined once again by your explosive
flatulence. Your love life will run into trouble when your fiancee hurls
a javelin through your chest.  -- Weird Al, _Your Horoscope for Today_
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