From: Daniel Drake <dsd@laptop.org>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: Remount root RO after the root dentry drops from the namespace
Date: Wed, 18 Nov 2009 15:18:34 +0000 [thread overview]
Message-ID: <1258557514.23957.10.camel@localhost.localdomain> (raw)
In-Reply-To: <E1NAk7D-0005Sl-QI@pomaz-ex.szeredi.hu>
On Wed, 2009-11-18 at 13:58 +0100, Miklos Szeredi wrote:
> I see some confusion here, there's no "path/to/realroot", the bind
> mount didn't actually do anything to the namespace, it just made
> "/versions/run/1" (which will later become "/") a mountpoint.
Ah yes, I misunderstood.
This bind-mounting trick actually allows for a simplification to the
whole procedure I listed earlier. Everything is working now.
We previously added support to util-linux-ng's switch_root utility to
execute that procedure for the case when the target root is not a mount
point. I'll submit a patch to revert that and instead note this trick in
the manpage.
Thanks for your help!
Daniel
prev parent reply other threads:[~2009-11-18 15:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-18 11:12 Remount root RO after the root dentry drops from the namespace Daniel Drake
2009-11-18 11:50 ` Miklos Szeredi
2009-11-18 12:38 ` Daniel Drake
2009-11-18 12:58 ` Miklos Szeredi
2009-11-18 14:52 ` Karel Zak
2009-11-18 15:28 ` Miklos Szeredi
2009-11-18 17:08 ` Karel Zak
2009-11-18 17:38 ` Miklos Szeredi
2009-11-18 15:18 ` Daniel Drake [this message]
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