topic NFS problem in Operating System - HP-UX

NFS problem

Ramesh_27 — Mon, 21 Jun 2004 13:24:52 GMT

When i try to unmount from my HP-UX server i get these error messages. Can anyone throw some light on the same.

#umount prodsis2:/bigftp/flashemd
nfs umount: bindresvport: t_errno = 8
nfs umount: inform_server: Couldn't bind to a reserved port, rtn = -1

hawaii:/prodsis2/bigftp: umount prodsis2:/sis/data/prod/hostwkst/reman
nfs umount: bindresvport: t_errno = 8
nfs umount: inform_server: Couldn't bind to a reserved port, rtn = -1

Re: NFS problem

Navin Bhat_2 — Mon, 21 Jun 2004 13:33:55 GMT

Could you please post the contents of nsswitch.conf?

Re: NFS problem

RAC_1 — Mon, 21 Jun 2004 13:38:00 GMT

/sbin/init.d/nfs.client stop
/sbin/init.d/nfs.client start

then try unmount it.

Anil

Re: NFS problem

Todd Whitcher — Tue, 22 Jun 2004 07:16:54 GMT

Hello,

The root of this issue appears to be the lack of available ports. umount needs to temporarily use a port in the reserved range (512- 1023) when doing the umount.

There is a known problem when using NIS as your primary name resolution resource.

Reserved ports are kept open by NIS until the calling process exits (typically
telnetd, rlogind, etc). A manual NFS mount or umount will request a port only for the
duration of the mount/umount process and then exit. Unfortunately this fails if no
ports are available. This can be seen with lsof

lsof -i UDP:512-1023 /* shows all ports 512 - 1023 in use */

Workaround: Do not use NIS as your primary / first policy for hosts: in nsswitch.conf.

You DNS or /etc/hosts would need to be able to resolve your NFS hosts.

This is resolved in HPUX 11.23

I'm not certain if this is your issue, but if it is test the workaround.

Hope this helps,

Todd