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Full Discussion: problem with NFS daemon?????
Operating Systems AIX problem with NFS daemon????? Post 91481 by bakunin on Friday 2nd of December 2005 12:35:35 PM
Old 12-02-2005
In AIX NFS - like many other daemons - is handled via a "super-daemon" called "System Resource Controller". Many daemons (in SRC teminology "subsystems" and "subservers") are relying on this mechanism.

They have to be registered, then can be listed (lssrc), (re-)started (startsrc, refresh) and stopped (stopsrc) either one by one or - as they are organized in groups - groupwise.

"nfs" is a group of such subsystems and a running nfs should look similar to the following:

Code:
# lssrc -g nfs
Subsystem         Group            PID          Status 
 biod             nfs              307374       active
 nfsd             nfs              397322       active
 rpc.mountd       nfs              299080       active
 rpc.statd        nfs              372738       active
 rpc.lockd        nfs              381142       active

First, try restart your NFS system, in this case not by restarting it but by shutting it down and starting it up anew:

Code:
stopsrc -g nfs

If this fails for some processes the notoriously somewhat unstable (desperately wanting to describe it in accurate terms which, alas, would be NC-21) NFS system of AIX has managed to fail for another time. Reboot the machine.

If this is successful start it up again:

Code:
startsrc -g nfs

Next part of the debugging would be the file /etc/exports. DO NOT rely on SMITty to edit this file, better do it yourself. Consult your AIX manual on how to do it. Basically it should look like:

Code:
/usr/sys/inst.images -ro,access=machine1
/my/dir

The directory /usr/sys/inst.images is exported readonly to only machine machine1, the directory /my/dir is exported for all to use in read/write.

After altering this file put its directives into use by issuing

Code:
# exportfs -va

then control the result by
Code:
# showmount -e


After this try mounting it on the remote machine.

Hope this helps.

bakunin
 

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LEARN ABOUT OSX

mount.nfs

MOUNT.NFS(8)						      System Manager's Manual						      MOUNT.NFS(8)

NAME

       mount.nfs, mount.nfs4 - mount a Network File System

SYNOPSIS

       mount.nfs remotetarget dir [-rvVwfnsh ] [-o options]

DESCRIPTION

       mount.nfs is a part of nfs(5) utilities package, which provides NFS client functionality.

       mount.nfs  is  meant to be used by the mount(8) command for mounting NFS shares. This subcommand, however, can also be used as a standalone
       command with limited functionality.

       remotetarget is a server share usually in the form of servername:/path/to/share.  dir is the directory on which the file system	is  to	be
       mounted.

       Under  Linux  2.6.32  and  later  kernel  versions, mount.nfs can mount all NFS file system versions.  Under earlier Linux kernel versions,
       mount.nfs4 must be used for mounting NFSv4 file systems while mount.nfs must be used for NFSv3 and v2.

OPTIONS

       -r     Mount file system readonly.

       -v     Be verbose.

       -V     Print version.

       -w     Mount file system read-write.

       -f     Fake mount. Don't actually call the mount system call.

       -n     Do not update /etc/mtab.	By default, an entry is created in /etc/mtab for every mounted file system. Use this option to skip making
	      an entry.

       -s     Tolerate sloppy mount options rather than fail.

       -h     Print help message.

       nfsoptions
	      Refer to nfs(5) or mount(8) manual pages.

NOTE

       For further information please refer nfs(5) and mount(8) manual pages.

FILES

       /etc/fstab	 file system table

       /etc/mtab	 table of mounted file systems

SEE ALSO

       nfs(5), mount(8),

AUTHOR

       Amit Gud <agud@redhat.com>

								    5 Jun 2006							      MOUNT.NFS(8)
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