From: Christoph Hellwig <hch@infradead.org>
To: Eric Sandeen <sandeen@sandeen.net>
Cc: Christoph Hellwig <hch@infradead.org>,
Takashi Sato <t-sato@yk.jp.nec.com>,
Ric Wheeler <rwheeler@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Oleg Nesterov <oleg@tv-sign.ru>,
linux-fsdevel@vger.kernel.org, dm-devel@redhat.com,
viro@ZenIV.linux.org.uk, linux-ext4@vger.kernel.org,
xfs@oss.sgi.com, axboe@kernel.dk, mtk.manpages@googlemail.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] Add timeout feature
Date: Mon, 29 Sep 2008 10:37:49 -0400 [thread overview]
Message-ID: <20080929143749.GA13286@infradead.org> (raw)
In-Reply-To: <48E0E7D4.1090409@sandeen.net>
On Mon, Sep 29, 2008 at 09:36:04AM -0500, Eric Sandeen wrote:
> Christoph Hellwig wrote:
> > On Fri, Sep 26, 2008 at 05:52:35PM +0900, Takashi Sato wrote:
> >> I think that your concern is that the freezer cannot recognize the occurrence
> >> of a timeout and it continues the backup process and the backup data is
> >> corrupted finally.
> >
> > What timeout should happen? the freeze ioctl must not return until the
> > filesystem is a clean state and all writes are blocked.
>
> The suggestion was that *UN*freeze would return ETIMEDOUT if the
> filesystem had already unfrozen itself, I think. That way you know that
> the snapshot you just took is worthless, at least.
But why would the filesystem every unfreeze itself? That defeats the
whole point of freezing it.
next prev parent reply other threads:[~2008-09-29 14:37 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-08 11:53 [PATCH 3/3] Add timeout feature Takashi Sato
2008-09-08 17:11 ` Christoph Hellwig
2008-09-25 21:06 ` Ric Wheeler
2008-09-26 8:52 ` Takashi Sato
2008-09-26 10:58 ` Ric Wheeler
2008-09-29 11:11 ` Takashi Sato
2008-09-26 12:35 ` Valdis.Kletnieks
2008-09-29 14:13 ` Christoph Hellwig
2008-09-29 14:36 ` Eric Sandeen
2008-09-29 14:37 ` Christoph Hellwig [this message]
2008-09-29 14:45 ` Eric Sandeen
2008-09-29 22:08 ` jim owens
2008-10-05 10:00 ` Pavel Machek
2008-10-09 10:12 ` Takashi Sato
2008-10-09 10:18 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2008-08-18 12:28 Takashi Sato
2008-08-21 20:20 ` Andrew Morton
2008-08-22 18:16 ` Christoph Hellwig
2008-08-24 17:03 ` Oleg Nesterov
2008-08-29 9:39 ` Takashi Sato
2008-07-22 9:36 Takashi Sato
2008-06-30 12:24 Takashi Sato
2008-07-01 8:10 ` Christoph Hellwig
2008-07-07 11:07 ` Pavel Machek
2008-07-08 23:10 ` Dave Chinner
2008-07-08 23:20 ` Pavel Machek
[not found] ` <20080708232031.GE18195@elf.ucw.cz>
2008-07-09 0:52 ` Dave Chinner
2008-07-09 1:09 ` Theodore Tso
[not found] ` <20080709010922.GE9957@mit.edu>
2008-07-09 4:21 ` Brad Boyer
2008-07-09 6:13 ` Miklos Szeredi
2008-07-09 6:16 ` Christoph Hellwig
2008-07-09 6:22 ` Miklos Szeredi
2008-07-09 6:41 ` Arjan van de Ven
2008-07-09 6:48 ` Miklos Szeredi
2008-07-09 6:55 ` Arjan van de Ven
2008-07-09 7:08 ` Miklos Szeredi
2008-07-09 20:48 ` Pavel Machek
2008-07-09 7:13 ` Dave Chinner
2008-07-09 11:09 ` Theodore Tso
2008-07-09 11:49 ` Dave Chinner
[not found] ` <20080709114958.GV11558@disturbed>
2008-07-09 12:24 ` Theodore Tso
[not found] ` <20080709122401.GK9957@mit.edu>
2008-07-09 12:59 ` Olaf Frączyk
2008-07-09 13:57 ` Arjan van de Ven
2008-07-09 13:55 ` Arjan van de Ven
2008-07-09 13:58 ` jim owens
2008-07-09 14:13 ` jim owens
2008-07-13 12:06 ` Pavel Machek
2008-07-13 17:15 ` jim owens
2008-07-14 6:36 ` Pavel Machek
2008-07-14 13:17 ` jim owens
2008-07-14 13:12 ` Takashi Sato
2008-07-14 14:04 ` jim owens
2008-07-09 13:53 ` Arjan van de Ven
2008-07-09 6:59 ` Dave Chinner
2008-07-09 7:13 ` Miklos Szeredi
2008-07-09 7:33 ` Dave Chinner
2008-07-09 8:11 ` Miklos Szeredi
2008-07-09 11:15 ` Dave Chinner
2008-07-09 20:44 ` Pavel Machek
2008-06-24 7:00 Takashi Sato
2008-06-24 22:09 ` Andrew Morton
2008-06-27 11:33 ` Takashi Sato
2008-06-27 18:57 ` Andrew Morton
2008-06-29 23:13 ` Takashi Sato
2008-06-30 0:01 ` Andrew Morton
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