From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Valdis.Kletnieks@vt.edu
Cc: porte64@free.fr, linux-kernel@vger.kernel.org
Subject: Re: read-only partitions: does the policy apply to all metadata ?
Date: Tue, 10 Mar 2009 17:34:37 +0000 [thread overview]
Message-ID: <20090310173437.2a8114b2@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <29610.1236705759@turing-police.cc.vt.edu>
On Tue, 10 Mar 2009 13:22:39 -0400
Valdis.Kletnieks@vt.edu wrote:
> On Tue, 10 Mar 2009 17:26:44 BST, porte64@free.fr said:
> > When a partition is mounted as read-only, does the kernel
> > really prevent ANY byte to be written to it, including
> > any metadata ?
>
> It's very hard to come up with a workable way to do a true read-only
> mount of a journaled filesystem such as ext3 - what do you do if there's
> anything in the journal that needs to be replayed?
Replay it to a snapshot backed by the r/o fs ...
next prev parent reply other threads:[~2009-03-10 17:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-10 16:26 porte64
2009-03-10 17:22 ` Valdis.Kletnieks
2009-03-10 17:34 ` Alan Cox [this message]
2009-03-10 18:08 ` Valdis.Kletnieks
2009-03-15 21:17 ` Pavel Machek
2009-03-10 23:33 ` Robert Hancock
2009-03-12 8:55 ` porte64
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