Hello Mark,

yes, you're right. One of my customers used it because his application
changes file attributes without any influence to the file content (it
was a video cms) and the GPFS/HSM environment would not work correct
without this option.

So, you have to decide for yourself.

Greetings

Rolf Meyer

Mark Stapleton schrieb:
> Perhaps. But what happens when you restore files without the latest ACLs? 
> They're set for a reason, and to not restore the entire file's contents 
> strikes me as rather worthless.
> 
> --
> Mark Stapleton
> System engineer, CDW
> 
> 
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf 
> Of Rolf Meyer
> Sent: Monday, February 16, 2009 3:16 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] Backup of ownership and ACLs
> 
> Hello
> 
> I think, there's an option called SKIPACLUPDATCHECK, which can be used
> to prevent incr backups just because of changing ACL-infos.
> 
> Give it a try.
> 
> Rolf Meyer
> Storage Consultant
> PROFI Engineering Systems AGAlexander Födisch schrieb:
>> 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?
> 
> 
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