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Top Forums UNIX for Dummies Questions & Answers ACL (POSIX and NFSv4) Support over NFS shared drives on different Unix platforms Post 302707535 by bstring on Friday 28th of September 2012 09:35:09 PM
Old 09-28-2012
ACL (POSIX and NFSv4) Support over NFS shared drives on different Unix platforms

Hello, I have a question regarding ACLs and their availability across different Unix platforms via NFS share.

If I have an AIX/FreeBSD/Solaris/HP-UX client that has an nfs share from a different system mounted on it, will the ACLs on the nfs share be processed properly?

My guess is that as long as the both systems can support ACLs, then they will be processed properly, but I do not know if POSIX ACLs can be read properly if the two systems are different operating systems.

EDIT:
Quote:
By default, if the file system being exported by an NFS server supports ACLs and the NFS client can read ACLs, ACLs are utilized by the client system.
This quote from this site says that the ACLs should be read if the two filesystems both support ACLs. I just wasn't sure if that applied to all of AIX/FreeBSD/Solaris/HP-UX

Also I have the same question, but with NFSv4 ACLs. From what I understand, Solaris ZFS and AIX jfs2 with extended attributes both support nfsv4 ACLs. If I mount one system's filesystem on the other, will the nfs4 acls be present on the second machine?

Last edited by bstring; 09-28-2012 at 10:46 PM..
 

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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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