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Peter,
You might want to try badblocks in NON-DESTRUCTIVE (read) mode from a rescue disk just to verify that the disk is not going bad. Just because fsck doesn't show any errors doesn't mean there isn't a problem.
A successful babblocks read-mode test it not a guarentee either. I've had disks that passed the read-mode, but failed the destructive write mode test. However if your disk is having problems that are manifesting as a system lock then the read-mode will probably catch it.
If you do use the badblocks program backup your data. One bad flag and you data is toast!
- -Weave
P.S. badblocks is usually located in /sbin and is part of the e2fsprogs RPM on Redhat 9.
Peter Long wrote: | Yikes, I hope that is not it! I don't see any errors reported by fsck | either. I have a spare PCI IDE controler I could try instead of the | onboard one. | | I recently installed APCUPSD to monitor my APS Back-UPS ES. I wonder if | it could be messing with the APC stuff causing the disks to be powered | down. How would I check if that is that case... | | -- | Peter Long | | Jon Carnes wrote: | |> I second Jason's theory. I've run into that exact problem before with |> boxes having disk problems. |> |> When booting, does the fsck show any bad sectors or problems that it |> can't fix? |> |> Jon |> |> On Wed, 2004-01-28 at 21:51, Jason Tower wrote: |> |>> it sounds like a problem with either the hard drive or the disk |>> controller. anything that accesses the disk is hanging. unlike |>> logins, mail, ssh, etc, routing and iptables don't generally require |>> disk access once they're loaded into memory so they aren't failing. |>> |>> of course, that's just my opinion, i could be wrong. |>> |>> jason |>> |>> On Wednesday 28 January 2004 21:38, Peter Long wrote: |>> |>>> Hi all, |>>> |>>> I have been experiencing an intermittent problem with my trusty Linux |>>> box. Unfortunately I can't figure out the cause. The machine is |>>> running RedHat 8.0 and is a PII 350 with 384MB of RAM. It also has |>>> more then enough RAM. The box serves as my gateway to the Internet. |>>> It has two NICs and I am running IP Tables on it. I also use it as my |>>> mail server. |>>> |>>> The symptoms of the problem are that every now and then it seems to |>>> "lock up". By that I mean that I cannot login at the console, neither |>>> via X or tty. The funny thing is that it still works fine as a |>>> router. My internal machines can still send traffic through it after |>>> it has locked up. At first I thought it was a problem with PAM since |>>> it locked up when I tried to login. Incidently IMAP from remote |>>> machines would also stop working as well as new SSH connections. |>>> Named also stops responding. I tried testing my theory that it was a |>>> PAM problem by leaving one tty console logged in after rebooting the |>>> system. However when the problem re-occurred I discovered that I |>>> could not do an 'ps' at the bash prompt. So it seems that you cannot |>>> launch new processes either. |>>> |>>> There are no funny errors in the logs to indicate what the problem |>>> could be. Actually it seems to stop writing to the log entirely. I |>>> usually get an entry in the 'messages' log every 30 minutes from |>>> iptables for BOOTP traffic that is dropped. These stop occurring. |>>> |>>> It does not seem to be a disk space or ram problem. I have gig free |>>> and 230MB of the 384MB is unused. |>>> |>>> Any clues or tips would be greatly appreciated. |>>> |>>> -- |>>> Peter Long |> |> |> | | | -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org
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