On 5/13/2012 6:43 AM, Wayne Blaszczyk wrote:
> On 13/05/12 20:13, Andrew Benton wrote:
>> On Sun, 13 May 2012 06:58:57 +0100
>> Wayne Blaszczyk<wblas...@bigpond.net.au> wrote:
>>
>>> Hi All,
>>> I've recently updated my main workstation to LFS 7.1 (From LFS 6.7), and
>>> noticed one of my auto build scripts is now failing.
>>> I've tracked it down to the following command.
>>> mount -vt tmpfs shm $LFS/dev/shm
>>> It seems to me that this command is mounting onto /run/shm rather than
>>> /mnt/lfs/dev/shm due to /mnt/lfs/dev/shm being a symlink to /run/shm.
>> Why is /mnt/lfs/dev/shm a symlink to /run/shm? The instructions for
>> mounting the virtual filesystems are:
>> mkdir -v $LFS/{dev,proc,sys}
>> mknod -m 600 $LFS/dev/console c 5 1
>> mknod -m 666 $LFS/dev/null c 1 3
>> mount -v --bind /dev $LFS/dev
>> mount -vt devpts devpts $LFS/dev/pts
>> mount -vt tmpfs shm $LFS/dev/shm
>> mount -vt proc proc $LFS/proc
>> mount -vt sysfs sysfs $LFS/sys
>> http://www.linuxfromscratch.org/lfs/view/development/chapter06/kernfs.html
>>
>>> Further more, when entering chroot environment, /dev/shm is now pointing
>>> to a no existent /run/shm.
>>> Am I'm doing something wrong or is this a bug?
>> You're doing something weird. My guess is the
>> mount -v --bind /dev $LFS/dev step. It's mounting the /dev from your
>> host system on /mnt/lfs/dev. If /dev/shm on your host system is a
>> symlink pointing at /run/shm then that's what it will look like
>> in /mnt/lfs/dev too.
>>
>> Andy
> Yes, on my host system (which is LFS 7.1), /dev/shm is a symlink
> pointing to /run/shm. This is what the mountvirtfs start script creates
> during boot up. This is why I'm questioning if this is a bug?
> Wayne.
>
The book doesn't use auto scripts for anything. Any problems encountered
using auto scripts that you wrote would point to something you need to
change to accommodate the host system and building LFS.
So no, it isn't a bug in the book.
Elly
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