[CentOS] File system goes read-only once in a while

Fri Aug 1 16:15:06 UTC 2008
Toby Bluhm <tkb at midwestinstruments.com>

Mufit Eribol wrote:
> Ralph Angenendt wrote:
>> touch /forcefsck
>> and reboot. This will cause all filesystems to be checked with fsck
>> after the reboot.
> I did it several times. Unfortunately, it couldn't fix the problem. 

Does it say the fsck is a success or fails?

> I still get the following errors and the system goes "read only" after a 
> couple of minutes.
> EXT3-fs warning (device dm-0): ext3_clear_journal_err: Filesystem error 
> recorded from previous mount: IO failure
> EXT3-fs warning (device dm-0): ext3_clear_journal_err: Marking fs in 
> need of filesystem check.
> EXT3-fs warning: mounting fs with errors, running e2fsck is recommended
> EXT3 FS on dm-0, internal journal
> EXT3-fs: recovery complete.
> EXT3-fs: mounted filesystem with ordered data mode.
> It seem formatting the /mnt/raid is the way to go. However, i have to 
> move /mnt/raid/var to /var first. / is on another hard disk and there is 
> space available. there are lots of programs use var lively. How can I 
> move /mnt/raid/var to /var.

Boot the rescue disk. Mount the partitions someplace. Dump /old_var to 
/new_var. Of course, if the /old_var fs is somewhat trash, /new_var 
won't be much better.

I'd be wary of hardware problems with raid controller, cables, or disks. 
That "IO failure" in your logs isn't what you want to see during fs 

Toby Bluhm
Alltech Medical Systems America, Inc.