ADSM-L

[ADSM-L] Backup of ownership and ACLs

2009-02-16 00:46:37
Subject: [ADSM-L] Backup of ownership and ACLs
From: Alexander Födisch <foedisch AT EVA.MPG DOT DE>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Mon, 16 Feb 2009 06:45:57 +0100
Hi all,

if we change the ownership (chmod/chgrp) or the ACLs of files/folders on our 
GPFS-filesystem, all affected
data will be backed up again from TSM because the ctime was changed - same 
behaviour on a XFS filesystem.
We often have to change recursively the ACLs of a 15TB-folder and so this 15TB 
are backup up nearly daily...
I understand the necessity of backing up metadata as ownership or ACLs :) But 
is there an other possibility?

Can we backup just the metadata of changed files instead of all the data? 
Depends this on the filesystem?


Thanks,
Alex