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unclug - Re: [unclug] Unstable RedHat 9 machine

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  • From: James Jordan <jwjordan AT bme.unc.edu>
  • To: unclug AT lists.ibiblio.org
  • Subject: Re: [unclug] Unstable RedHat 9 machine
  • Date: Thu, 10 Jun 2004 12:39:55 -0400

Unfortunately, I am using NFS to mount /var/spool/mail among other directories. I don't see a way that I could disable NFS without breaking many services (Sendmail and Amanda being the two most important). Following your lead, I checked out Google groups and read the suggestions. I tried running tcpdump on the ports listed by "rpcinfo -p" looking for errors, but I've yet to see any. At the suggestion of Ben Aycock in OIS, I wrote a little Perl script to keep a minute-by-minute log of the output of "ps auxw" which clears every hour. Hopefully this'll give me a better idea of what is happening when the system crashes next (I'm sure I won't have to wait long!). James Jordan wrote:

I have an unstable RedHat 9 machine acting as my department's primary mail server and DNS server. Obviously, having this machine crash on a *weekly* basis is unacceptable, and I'm at my wits end trying to figure this one out. I notice that while no log shows any kinds of errors (that I can find that is), the console occasionally shows this error: "svc: short len 2, dropping request". Suffice it to say, I have no idea what this means, and Google didn't help. Does anyone have any idea where I should start, or something specific to look for? I can say that all this instability seems to have started (though I can be 100% sure) with the replacement of the hard drive after a HD failure. However, I have run hdparm with numerous options trying to rule out hardware problems, and I haven't seen any errors thus far. I am running the latest kernel before RedHat moved to EL. Thanks for any light you can shed on this!



Looking through Google Groups I see some folks mentioning this exact error as an issue with NFS. Are you running any NFS services?

Jeff



--
James Jordan
Systems Administrator
UNC Chapel Hill Dept. of Biomedical Engineering
919-966-8077
jwjordan AT bme.unc.edu





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