[Voyage-linux] aufs: Sync to flash with our reboot ?

[Mike O'Connor]

Hi Punky

For me to be able to use the new Voyage I need to be able to save
changes with out a reboot.

I'd spent some time looking at this issue and had decided that something
like what your talking about was going to be needed.

I want to move the list of aufs directories in to a /etc/defaul file as
this will survive as upgrade.

Mike


Kim-man 'Punky' TSE wrote:
> Hi Mike,
>
> Currently it is not support, at least not the same way you can do like
> 0.5.2.  There are some problem on it once 0.6 is now using aufs.
>
> The /var/log you see in 0.6 is an aufs filesystem, which is mounted
> using two branches.  At the bottom the read-only /var/log and at the
> top a tmpfs /lib/init/rw/var/log.  All changes goes to
> /lib/init/rw/var/log.
>
> The problem is since there are running process are using files in
> /var/log, so you cannot unmount or remount /var/log after sync
> operations.
>
> I am exploring a way to have a new options that all writes will go to
> a standalone tmpfs using mount --bind options, so that when setup
> /var/log
>
> 1. mount /var/log to elsewhere say, /ro/var/log
> 2. copy /ro/var/log to /lib/init/rw/var/log
> 3. mount --bind /lib/init/rw/var/log /var/log
> 4. then you can do sync from /var/log to /ro/var/log periodically.
> 5. Before reboot, sync /var/log to /ro/var/log.
>
> Regards,
> Punky
>
>
> Mike O'Connor wrote:
>> Hi All
>>
>> Any ideas about how I might be able to sync the aufs to flash with our a
>> reboot ?
>>
>> Mike
>>
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>> Voyage-linux at list.voyage.hk
>> http://list.voyage.hk/mailman/listinfo/voyage-linux
>>   
>
>