From: Stuart Anderson <sba@srl.caltech.edu>
Subject: nfs bindresvport: Address already in use
Date: Sun, 30 Jan 2005 23:43:53 +0000 (UTC)
Message-ID: <slrncvqs9p.evp.sba@localhost.localdomain>
To: mlist-nfs-valinux@nntp-server.caltech.edu
Sender: nfs-admin@lists.sourceforge.net
Errors-To: nfs-admin@lists.sourceforge.net


I get the following error on the a Linux (FC3) client machine when I issue
more than 53 NFS mount requests in less than ~1 minute:

Jan 30 10:40:22 beowulf automount[22882]: >> nfs bindresvport:
	Address already in use
Jan 30 10:40:22 beowulf automount[22882]: mount(nfs): nfs:
	mount failure node54:/usr1 on /data/node54
Jan 30 10:40:22 beowulf automount[22882]: failed to mount /data/node54

If I wait ~1 minute, I can mount another set of ~50 filesystems.
The NFS servers are also running FC3.

I repeatedly get this problem whether I manually issue the mount requests
with /bin/mount or use the automounter.

I have 290 Beowulf clusters nodes that operate as NFS servers and applications
that are trying to mount these too fast and failing.

I tried running autofs-4.1.4_beta1 to rule out RedHat patches, but that
did not help.

I do not have this problem on RH9 or Solaris 9 clients.

How do I increase the rate of allowed NFS mounts?

Thanks.


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