On Tue, 8 Feb 2000, Paul Crossman wrote:
> I've been getting some strange disk/filesystem errors on one of my
> systems today that just do no make any sense to me.
>
> The system is running RH 6.0, and here's a few lines of the syslog.
>
> Feb 8 20:28:21 barney kernel: EXT2-fs warning (device sd(8,53)):
> ext2_free_blocks: bit already cleared for block 36519
> Feb 8 20:28:21 barney kernel: EXT2-fs warning (device sd(8,53)):
> ext2_free_blocks: bit already cleared for block 36521
> Feb 8 20:28:21 barney kernel: EXT2-fs warning (device sd(8,53)):
> ext2_free_blocks: bit already cleared for block 36523
> Feb 8 20:28:21 barney kernel: EXT2-fs warning (device sd(8,53)):
> ext2_free_blocks: bit already cleared for block 36526
> Feb 8 20:28:21 barney kernel: EXT2-fs warning (device sd(8,53)):
> ext2_free_blocks: bit already cleared for block 36534
> Feb 8 20:28:21 barney kernel: EXT2-fs warning (device sd(8,53)):
> ext2_free_blocks: bit already cleared for block 36534
> Feb 8 20:28:21 barney kernel: EXT2-fs warning (device sd(8,53)):
> ext2_free_blocks: bit already cleared for block 36737
>
> First of all, what does this mean??? Second, what is "sd(8,53)?
> Obviously I'm getting some kind of warning on one of my SCSI drives.
> I'd like to know how to tell which one. 8,53 makes no sense. I don't
> have a drive that's ID #8, and ID 53, well, we all know that's not
> possible at this point except for fibrechannel disks, and I don't have
> those.
>
> Is there someone out there that has seen this kind of stuff before?
I've seen it before, though it was a free years ago. I would test your RAM
and make sure it is good (look for a utility like memtest86). I think what
happens is the filesystem cache gets corrupted in RAM and these errrors
start popping up. If you run fsck it should be able to fix all the errors.
As to which drive it is, the problem is really which filesystem. How many
filesystems do you have? I'd boot single user and check the RAM, then
force an fsck on all the filesystems, that should point out which one is
the problem. A backup would be a good thing to get before doing too much.
Good Luck,
Bill Carlson
------------
Systems Programmer [EMAIL PROTECTED] | Opinions are mine,
Virtual Hospital http://www.vh.org/ | not my employer's.
University of Iowa Hospitals and Clinics |
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