Write once on NFS file system Post: 302708729

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Operating Systems AIX Write once on NFS file system Post 302708729 by bakunin on Tuesday 2nd of October 2012 05:55:21 AM

10-02-2012

Registered User

Quote:

Originally Posted by Beginner123

Because our departments get the space for Free .

You are free to decide whatever you want, but be warned: this is a very, very, bad reason to base a decision on in all things technical.

Quote:

Could any one please suggest, how to make the (/xshare) file system an write once ,while owner group users of this share can read the contents. If I could solve that I can close this request.

There is definitely, positively no such thing: either one is allowed to write or not. If one is allowed to write he is permanently entitled to do so, if one is forbidden the non-entitlement is also permanent.

You could write a script which checks the directory in question and, if files are in it, mounts it read-only, otherwise it mounts read-write. Then put a cron job in place so that the directory gets unmounted/remounted once a day (or more often, whatever you deem feasible).

This will be as close as possible to "write once", but you will have to understand that your original requirement is not possible as such, any solution will be a better or worse compromise between what you want and what is possible.

I hope this helps.

bakunin

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LEARN ABOUT MINIX

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)