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From: Arjan van de Ven <arjan@linux.intel.com>
To: Ric Wheeler <ric@emc.com>
Cc: Valerie Henson <val_henson@linux.intel.com>,
	linux-fsdevel@vger.kernel.org
Subject: Re: topics for the file system mini-summit
Date: Sat, 03 Jun 2006 16:13:29 +0200	[thread overview]
Message-ID: <44819909.5020801@linux.intel.com> (raw)
In-Reply-To: <44819398.4030603@emc.com>

Ric Wheeler wrote:
>>
> Any thoughts about what the right semantics are for properly doing a 
> forced unmount and how whether it is doable near term (as opposed to the 
> more strategic/long term issues laid out in this thread) ?

I would like to ask you take one step back; in the past when I have seen
people want "forced unmount" they wanted instead somethings else that they
thought (at that point incorrectly) forced unmount would solve.

there's a few things an unmount does
1) detach from the namespace (tree)
2) shut down the filesystem to
2a) allow someone else to mount/fsck/etc it
2b) finish stuff up and put it in a known state (clean)
3) shut down IO to a fs for another node to take over
    (which is what the "incorrectly" is about technically)



  reply	other threads:[~2006-06-03 14:13 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-25 21:44 topics for the file system mini-summit Ric Wheeler
2006-05-26 16:48 ` Andreas Dilger
2006-05-27  0:49   ` Ric Wheeler
2006-05-27 14:18     ` Andreas Dilger
2006-05-28  1:44       ` Ric Wheeler
2006-05-29  0:11 ` Matthew Wilcox
2006-05-29  2:07   ` Ric Wheeler
2006-05-29 16:09     ` Andreas Dilger
2006-05-29 19:29       ` Ric Wheeler
2006-05-30  6:14         ` Andreas Dilger
2006-06-07 10:10       ` Stephen C. Tweedie
2006-06-07 14:03         ` Andi Kleen
2006-06-07 18:55         ` Andreas Dilger
2006-06-01  2:19 ` Valerie Henson
2006-06-01  2:42   ` Matthew Wilcox
2006-06-01  3:24     ` Valerie Henson
2006-06-01 12:45       ` Matthew Wilcox
2006-06-01 12:53         ` Arjan van de Ven
2006-06-01 20:06         ` Russell Cattelan
2006-06-02 11:27         ` Nathan Scott
2006-06-01  5:36   ` Andreas Dilger
2006-06-03 13:50   ` Ric Wheeler
2006-06-03 14:13     ` Arjan van de Ven [this message]
2006-06-03 15:07       ` Ric Wheeler

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