topic Recurring NFS troubles in Operating System - HP-UX

Recurring NFS troubles

Walter Maul — Wed, 27 Sep 2000 19:20:24 GMT

Hi all! I've got a K460 running 10.20. This problem only seems to affect PC users. (All PC users are using a product from FTP Software called Interdrive) Periodically, they are not able to map drives to the NFS server. Other UNIX/Linux hosts are able to mount NFS drives perfectly.

The error the PC clients typically get is:

"Could not connection to BLAH BLAH BLAH. Semaphore timeout period has expired."

Usually stopping and restarting NFS services on the NFS server is sufficient to fix this problem. However, not today. The first time I disabled NFS services...all the daemons went away except for pcnfsd. It remained, and was finally killed by a kill -9. Then I started NFS services again, and now the users get the message:

"The specified server cannot complete the requested task."

My nfsconf file looks like this:

NFS_CLIENT=1
NFS_SERVER=1
NUM_NFSD=12
NUM_NFSIOD=12
PCNFS_SERVER=1
LOCKD_OPTIONS=""
STATD_OPTIONS=""
MOUNTD_OPTIONS=""
AUTOMOUNT=1
AUTO_MASTER="/etc/auto_master"
AUTO_OPTIONS="-f $AUTO_MASTER"
START_MOUNTD=1

Any thoughts? All comments and help is appreciated.

Re: Recurring NFS troubles

Alex Glennie — Thu, 28 Sep 2000 06:52:22 GMT

Are the pc clients opening connections to mountd to do EXPORT but never tearing them down perhaps ?
This sounds like a bug we have seen wrt Onnet S/W ...same vendor or subset of interdrive S/W ?

How many users at a time ?

may be worth increasing maxfiles & nfile ?

whats output from :
rpcinfo -p look for 100005 1 tcp ??? mountd
then :
netstat -an | grep ??? = ? more than 60 ?

my advice is speak to interdrive i think this is a known bug wrt their S/W

Re: Recurring NFS troubles

Alex Glennie — Thu, 28 Sep 2000 06:53:23 GMT

Sorry I don't now how to fix your latest error ... but hopefully we've tracked down the recurring nfs issue

Re: Recurring NFS troubles

Jim Adamson — Thu, 28 Sep 2000 08:02:09 GMT

Have you considered using Samba to share directories to PCs. Its free and works great on 10.20.

Re: Recurring NFS troubles

Walter Maul — Thu, 19 Oct 2000 23:39:36 GMT

I have looked into it further with the NFS client software, and the problem does not seem to stem from it. (After I got the error, I was still able to NFS mount a filesystem from another 10.20 server on my LAN.) That being said, I'm going to try and adjust the semaphore settings in the kernel parameters. If that doesn't work, I'm buying a gun! =P