Readonly root filesystem

Readonly root filesystem

[Alexander Perepelica]

Hello!
I try to make my root filesystem read only. I need this to create
power failsafe linux for headless router. I want use unionfs where
write layer would tmpfs (or always recreate small partition) and root
filesystem within read only layer. I try to do this how in debian make
fsprotect (but in opensuse 13.1 i can't find aufs, so use unionfs).
And question is anybody do such things?
I can make root filesystem ro with rootflags=ro, but where I must add
hook to create another layers pre-mount, mount or switch_root?
Regards,
Alexander Perepelica

Re: Readonly root filesystem

[Vasiliy Tolstov]

2014-08-04 12:08 GMT+04:00 Alexander Perepelica <perepelica.alex-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
> Hello!
> I try to make my root filesystem read only. I need this to create
> power failsafe linux for headless router. I want use unionfs where
> write layer would tmpfs (or always recreate small partition) and root
> filesystem within read only layer. I try to do this how in debian make
> fsprotect (but in opensuse 13.1 i can't find aufs, so use unionfs).
> And question is anybody do such things?
> I can make root filesystem ro with rootflags=ro, but where I must add
> hook to create another layers pre-mount, mount or switch_root?
> Regards,
> Alexander Perepelica


Please see github patches for aufs and overlayfs support.

-- 
Vasiliy Tolstov,
e-mail: v.tolstov-+9FY0jupvH6HXe+LvDLADg@public.gmane.org
jabber: vase-+9FY0jupvH6HXe+LvDLADg@public.gmane.org

Re: Readonly root filesystem

[Alexander Perepelica]

Sorry, but can you provide some links for this?
Thank you!

2014-08-04 13:59 GMT+03:00 Vasiliy Tolstov <v.tolstov-+9FY0jupvH6HXe+LvDLADg@public.gmane.org>:
> 2014-08-04 12:08 GMT+04:00 Alexander Perepelica <perepelica.alex-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>> Hello!
>> I try to make my root filesystem read only. I need this to create
>> power failsafe linux for headless router. I want use unionfs where
>> write layer would tmpfs (or always recreate small partition) and root
>> filesystem within read only layer. I try to do this how in debian make
>> fsprotect (but in opensuse 13.1 i can't find aufs, so use unionfs).
>> And question is anybody do such things?
>> I can make root filesystem ro with rootflags=ro, but where I must add
>> hook to create another layers pre-mount, mount or switch_root?
>> Regards,
>> Alexander Perepelica
>
>
> Please see github patches for aufs and overlayfs support.
>
> --
> Vasiliy Tolstov,
> e-mail: v.tolstov-+9FY0jupvH6HXe+LvDLADg@public.gmane.org
> jabber: vase-+9FY0jupvH6HXe+LvDLADg@public.gmane.org

Re: Readonly root filesystem

[Vasiliy Tolstov]

2014-08-04 15:48 GMT+04:00 Alexander Perepelica <perepelica.alex-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
> Sorry, but can you provide some links for this?
> Thank you!


https://github.com/haraldh/dracut/pull/4
https://github.com/haraldh/dracut/pull/20  but i mess request with my
another work and patch not clean.

-- 
Vasiliy Tolstov,
e-mail: v.tolstov-+9FY0jupvH6HXe+LvDLADg@public.gmane.org
jabber: vase-+9FY0jupvH6HXe+LvDLADg@public.gmane.org