xinglp wrote:
> 2014/1/17 Bruce Dubbs <bruce.du...@gmail.com>:
>> xinglp wrote:
>>> 2014/1/17 Bruce Dubbs <bruce.du...@gmail.com>:
>>>> Armin K. wrote:
>>>>> On 01/17/2014 05:03 AM, Bruce Dubbs wrote:
>>>>>> Moving to -dev.
>>> Or use "mount -o bind /run $LFS/run", which is better?
>>
>> I haven't finished testing yet as I'm also working on a util-linux
>> integration with udev problem, but why would we want to bind mount /run?
>> The only place /run is used in the book is for the tests in
>> util-linux. Mounting a tmpfs is fairly painless. I don't think a bind
>> mount would be appropriate because of the potential of interfering with
>> the host system.
>
> We also bind /dev to $LFS/dev, and mounting {devpts,sysfs.procfs} to
> $LFS/xxx is same as bind.
> Use "mount -o bind xxx" make the the guest similar to host system, but
> as you say, may interfer the host system.
> I was use bind when I build blfs without reboot into it.
I use:
$ cat ~/mount-virt.sh
#!/bin/bash
function mountbind
{
if ! mountpoint $LFS/$1 >/dev/null; then
$SUDO mount --bind /$1 $LFS/$1
echo $LFS/$1 mounted
else
echo $LFS/$1 already mounted
fi
}
function mounttype
{
if ! mountpoint $LFS/$1 >/dev/null; then
$SUDO mount -t $2 $3 $4 $5 $LFS/$1
echo $LFS/$1 mounted
else
echo $LFS/$1 already mounted
fi
}
if [ $EUID -ne 0 ]; then
SUDO=sudo
else
SUDO=""
fi
if [ x$LFS == x ]; then
echo "LFS not set"
exit 1
fi
mountbind dev
mounttype dev/pts devpts devpts -o gid=5,mode=620
mounttype proc proc proc
mounttype sys sysfs sysfs
mounttype run tmpfs shm
mountbind /usr/src
########
I also have umount-virt.sh.
> Since /run is special than others, it may be changed by guest system
> while building.
Correct.
> We should use tmpfs, but do the same work as bootscript do.
> http://www.linuxfromscratch.org/lfs/view/development/scripts/apds04.html
>
> mkdir -p /run/var /run/lock /run/shm
> chmod 1777 /run/shm
In LFS, the only process that uses /run at all is the tests for
util-linux. Otherwise it wouldn't be needed to do anything to run, at
least for LFS.
-- Bruce
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