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From: Peter Braam <Peter.Braam@Sun.COM>
To: lustre-devel@lists.lustre.org
Subject: [Lustre-devel] How store HSM metadata in MDT ?
Date: Sat, 05 Jul 2008 21:20:53 -0600	[thread overview]
Message-ID: <C4959635.4DA1%peter.braam@sun.com> (raw)
In-Reply-To: <20080705165025.GI6239@webber.adilger.int>




On 7/5/08 10:50 AM, "Andreas Dilger" <adilger@sun.com> wrote:

> What manages removal of the older copies in HPSS?  If HPSS can purge older
> files based on policy (leaving at least the most recent copy always), then
> it would be possible to defer the backup policy to HPSS and Lustre would
> only ever need to reference a single offline file.  Any queries for listing
> older versions of the file would be passed on from Lustre to HPSS in that
> case.
> 

The point is that there is a proposal here to have multiple pointers PER
INODE - that is not a good idea.

Regardless of what policies are in place and where they are managed, they
should not affect every inode with a new pointer for every backup object of
that inode.

Peter



> Cheers, Andreas
> --
> Andreas Dilger
> Sr. Staff Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
> 
> _______________________________________________
> Lustre-devel mailing list
> Lustre-devel at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-devel

  reply	other threads:[~2008-07-06  3:20 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-03 11:43 [Lustre-devel] How store HSM metadata in MDT ? Aurelien Degremont
2008-07-03 21:10 ` Peter Braam
2008-07-04 14:37   ` Aurelien Degremont
2008-07-05 16:50     ` Andreas Dilger
2008-07-06  3:20       ` Peter Braam [this message]
2008-07-06  3:24     ` Peter Braam
2008-07-06 19:24       ` Lee Ward
2008-07-06 22:53         ` Peter Braam
2008-07-08 12:06           ` Rick Matthews
2008-07-08  8:52         ` Aurelien Degremont
2008-07-08 17:41           ` Peter Braam
2008-07-09 13:25             ` Aurelien Degremont
2008-07-09 13:49               ` Peter Braam
2008-07-11 14:32                 ` Jacques-Charles Lafoucriere
2008-07-11 22:03                   ` Peter Braam
2008-07-11 14:37                 ` Jacques-Charles Lafoucriere
2008-07-11 22:12                   ` Peter Braam
2008-07-11 14:31       ` Jacques-Charles Lafoucriere
2008-07-11 21:57         ` Peter Braam
2008-07-16 10:26           ` Jacques-Charles Lafoucriere
2008-07-16 19:00             ` Peter Braam

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