From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#19491: /etc/mtab give wrong entries for early-mounted items.
Date: Sun, 04 Jan 2015 17:04:58 +0100
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To: =?UTF-8?Q?=E5=AE=8B=E6=96=87=E6=AD=A6?= <iyzsong@gmail.com>
Cc: 19491@debbugs.gnu.org

=E5=AE=8B=E6=96=87=E6=AD=A6 <iyzsong@gmail.com> skribis:

> Ludovic Court=C3=A8s <ludo@gnu.org> writes:
>
>> =E5=AE=8B=E6=96=87=E6=AD=A6 <iyzsong@gmail.com> skribis:
>>
>>> Notably, I have:
>>>   /dev/sda1 /root ext4 rw,relatime,data=3Dordered 0 0
>>>   none /root//dev devtmpfs rw 0 0
>>>
>>> Which should be:
>>>   /dev/sda1 / ...
>>>   none /dev ...
>>>
>>> Why not make /etc/mtab a symlink to /proc/self/mounts?
>>
>> This sounds appealing, but it seems that libmount in util-linux will
>> insist to update /etc/mtab.
>>
>> Do you have evidence that it could cope with it?
> Not sure, but I think libmount should just work fine.
>
> util-linux support this since 2.19:
>   https://www.kernel.org/pub/linux/utils/util-linux/v2.19/v2.19-ReleaseNo=
tes
>
> Debian make this default at 2011:
>   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D494001

OK, it sounds like it=E2=80=99s safe, then.  :-)

Would you like to propose a patch?  There are changes to make around
linux-boot.scm, and also in (guix build syscalls) the #:update-mtab?
argument should default to #f.

Thanks,
Ludo=E2=80=99.