2013/5/15 Matt Burgess <matt...@linuxfromscratch.org>:
> On Tue, 2013-05-14 at 13:59 -0500, Bruce Dubbs wrote:
>> 1. The latest git commit in util-linux now has a fix for umount not
>> remounting the root fs read only with a 'umount -a -r' command.
>>
>> I'm not sure if we should fix that in LFS or just wait until the next
>> release of util-linux. We do have a workaround in place in the mountfs
>> script, and it's a pretty minor issue right now. My inclination is to wait.
>
> I'd be inclined to wait as well. From the discussion I saw, the issue
> itself was fairly minor, and as you say has already been addressed.
>
>> 2. Also, I did a test of setting /etc/mtab as a symlink to /proc/mounts
>> and it seems to work properly although the output of 'mount' is a bit
>> more verbose. My objection of 'mount' not specifying the device for the
>> rootfs is fixed. I think this is done by reading the root= option on
>> the kernel command line, so it may not work exactly right in all cases.
>> For instance, it may not work if an initramfs is used and the root fs
>> is specified by uuid or label.
>
> I have a feeling it'll still work if an initramfs is used. See the
> thread at
> http://comments.gmane.org/gmane.linux.utilities.util-linux-ng/6718
> where, half-way down Kay Sievers shows util-linux behaving correctly on
> an initramfs-based system.
>
>> In any case, should we change the /etc/mtab entry to a symlink?
>
> It'd make the systemd branch merge slightly easier, as we already have
> it as a symlink over there :-)
>
> Seriously though, I think it should be a symlink. A number of
> advantages of doing so are at
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494001 and whilst I
> don't think the majority are applicable to a base LFS system, if any of
> our users want to use features such as disk quotas, or user namespaces,
> then it'd be nice if this simple issue didn't get in their way.
>
> Regards,
>
> Matt.
>
Since we use symlink now, /etc/init.d/mountfs need to be changed.
These should be deleted.
- log_info_msg "Recording existing mounts in /etc/mtab..."
- > /etc/mtab
-
- mount -f / || failed=1
- mount -f /proc || failed=1
- mount -f /sys || failed=1
- mount -f /run || failed=1
- mount -f /dev || failed=1
- (exit ${failed})
- evaluate_retval
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