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From: Eric Barton <eeb@sun.com>
To: lustre-devel@lists.lustre.org
Subject: [Lustre-devel] Lustre HSM HLD draft
Date: Tue, 12 Feb 2008 11:04:15 +0000	[thread overview]
Message-ID: <026801c86d67$01a0beb0$0281a8c0@ebpc> (raw)
In-Reply-To: <20080212035557.GP3029@webber.adilger.int>

Hi,

Sorry if these questions duplicates previous debate.

Have I understood correctly that the design allows individual objects
within a lustre file (i.e. stripes?) to be purged independently?

If so why is this needed?

I would have thought that when you purge a file, you need only record
the purged extent as an attribute of the whole lustre file and punch
its stripes to free the space.  Am I missing a use case?

-- 

        Cheers,
                Eric

  reply	other threads:[~2008-02-12 11:04 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-07 10:52 [Lustre-devel] Lustre HSM HLD draft DEGREMONT Aurelien
2008-02-08 21:18 ` Nathaniel Rutman
2008-02-11 14:59   ` Aurelien Degremont
2008-02-11 20:33     ` Nathaniel Rutman
2008-02-12  3:55       ` Andreas Dilger
2008-02-12 11:04         ` Eric Barton [this message]
2008-02-12 15:25           ` Aurelien Degremont
2008-02-12 17:23             ` Andreas Dilger
2008-02-12 19:43               ` Eric Barton
2008-02-12 23:24               ` Nathaniel Rutman
2008-02-18 21:51 ` Canon, Richard Shane
2008-02-19 17:13   ` Aurelien Degremont
2008-02-25 22:44   ` Peter J Braam
2008-02-21 15:26 ` Aurelien Degremont
2008-02-25 22:38   ` Peter J Braam
2008-02-27 16:51     ` Aurelien Degremont
2008-02-29  4:30       ` Peter Braam
  -- strict thread matches above, loose matches on Subject: below --
2008-02-07 16:19 Rick Matthews
2008-02-08  0:03 ` JC.LAFOUCRIERE at CEA.FR
2008-02-08 11:52   ` Rick Matthews
2008-02-08 15:55 ` Aurelien Degremont
2008-02-11 18:18   ` Andreas Dilger
2008-02-11 19:38     ` Peter Braam
2008-02-11 21:11     ` Ricardo M. Correia
2008-02-11 21:39       ` Andreas Dilger
2008-02-11 22:07         ` Ricardo M. Correia
2008-02-11 22:32           ` Nathaniel Rutman
2008-02-11 22:46             ` Rick Matthews
2008-02-12 15:41               ` Aurelien Degremont
2008-02-12  0:25             ` Ricardo M. Correia

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