Re: CentOS 4.4 Strange hang on a poweredge 2900.

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Brent wrote:
first I would try the Nic Card. If for some reason that doesn't work I it
wouldn't hurt to try the 64 bit version if the nic card doesn' work.

I believe there is physical limit of 4 gigs on a 32 bit system. So you may
want to consider going 64 anyways for this server.

If none of this fixes it you got a bad MB or CPU and time for Dell to
replace it.
At this point, I've tried swapping the NIC's, it doesn't seem to change the behavior.

I'm currently downloading the iso images for 4.4-ia64 just to see if that helps, but I'm
not necessarily getting a warm and fuzzy that's going to do anything for me.

I also found that the system couldn't seem to find my almost 1TB raid partition label when I rebooted, ( I have one partition that's egregiously larger than the rest), and it choked, forcing me into a repair shell. After mounting the rest of the partitions by label, I ended up changing them all to reference the actual device instead of
bothering with the labels in /etc/fstab, and everything came up normally.

A straight 4GB of ram right on the limit shouldn't be an issue, for more, allegedly you can use the kernel-hugemem.i686 kernel if you exceed that, but for 4GB, I should
be fine with the regular 2.6.9-42.0.3.EL-smp-i686 I'm running.

I'm not precisely certain, but it seems to me that this might be an issue with the storage component more than anything else. Anybody have any anecdotal data with stripe/block sizing on the Dell boxes and it's possible effects on performance? I still don't see any issues from the console, but I'm taking a stab in the dark here, since the only differences between two machines I have sitting in front of me is that one's a dual Celeron PE1950 with less storage and SATA drives (same amount of RAM, recognized fine by the 2.6.9-42.0.3.EL-smp-i686 kernel) and the other is a dual Xeon, same ram, a lot
more storage, and SAS instead of SATA drives on a beefier raid controller.

Other than that, there are probably all kinds of detailed differences a bunch of the other tiny, usually (relatively) insignificant pieces of hardware that I usually don't run into running
various i386/686 *nix operating systems.

Peter


--
Peter Serwe <peter at infostreet dot com>
http://www.infostreet.com

"The only true sports are bullfighting, mountain climbing and auto racing." -Earnest Hemingway

"Because everything else requires only one ball." -Unknown

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