From: Karel Zak <kzak@redhat.com>
To: Phillip Susi <psusi@ubuntu.com>
Cc: util-linux@vger.kernel.org
Subject: Re: Remount failure without fstab or mtab
Date: Thu, 18 Dec 2014 10:52:22 +0100 [thread overview]
Message-ID: <20141218095222.GD19904@x2.net.home> (raw)
In-Reply-To: <5491A048.3070103@ubuntu.com>
On Wed, Dec 17, 2014 at 10:24:56AM -0500, Phillip Susi wrote:
> I have a bug report in debian about "mount -o remount,rw /" failing
> because /etc/fstab does not contain an entry for the root fs, and
> /proc is not mounted ( booting with init=/bin/bash for recovery ).
> I'm not sure whether this is really a bug or not so I thought I'd ask.
This is bug, kernel does not require <source> for MS_REMOUNT, so the
current mount(8) behavior is too restrictive.
For standard use-case we want to read mtab (/proc/self/mountinfo) to
gather all mount options for the mount syscall, but this behavior
should be optional.
Fixed by commit 01966ce852ac6c46e7e35a8e4f981dea88620ff8,
Karel
--
Karel Zak <kzak@redhat.com>
http://karelzak.blogspot.com
prev parent reply other threads:[~2014-12-18 9:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-17 15:24 Remount failure without fstab or mtab Phillip Susi
2014-12-17 23:02 ` Dale R. Worley
2014-12-18 9:52 ` Karel Zak [this message]
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