Re: [gentoo-user] Run command after root mounted ro?

[Florian Philipp]

Am 10.08.2011 03:04, schrieb Daniel Frey:
> On 01/-10/37 11:59, Florian Philipp wrote:
>> Remounting root read-only is done by an init script called mount-ro
>> which is started in runlevel shutdown. Try to add a custom init script
>> to your /etc/init.d directory with the following content:
>>
>> #!/sbin/runscript
>> depend()
>> {
>>  after mount-ro
>> }
>> start()
>> {
>>  ebegin 'Shutting down mdadm'
>>  mdadm --wait-clean --scan
>>  eend $?
>> }
>>
>> Add it to the runlevel with `rc-update add <your-script> shutdown` and
>> don't forget to mark it executable.
>>
>> Disclaimer: I've not tried this (obviously) and if the script eats your
>> dog and wreaks your system, it is entirely your fault ;)
>
>
> Thanks, I tried this out, and while it does run after mounting ro, it
> just hangs. I've noticed that it's supposed to be monitoring
> /proc/mdstat but it was (presumably) unmounted long ago.
>
> I guess I have to do some more experimenting.
>
> Dan
>
>
>

Try remounting proc in your new init script. You have to advice mount to
not try adding it to /etc/mtab since that would obviously fail.
mount --no-mtab -t proc proc /proc

Hope this helps,
Florian Philipp