Re: [PATCH v2 0/4] add --preboot argument to mdadm/mdmon

[Jes Sorensen <Jes.Sorensen@redhat.com>]

On 01/23/12 17:52, Doug Ledford wrote:
>> Kay suggested --preroot on irc - would that do the job? I think that is
>> > a bit better than --offroot.
> I'd say preroot is better than preboot for sure.  I think I still like
> offroot more than preroot though.  We *are* running off root (from the
> initramfs, and we are modifying our argv[0] to signal to systemd that we
> are doing exactly this).  We *are* keeping our files off of root (in
> /run/mdadm versus /var/run/mdadm).  And we are intending to live both
> before root (preroot) and also after root (postroot).  So, I find
> preroot to be better than preboot, but still not as accurate as offroot.
>  Offroot fairly accurately captures what we are doing (although it
> doesn't speak to the expected life span of the action, nor does it speak
> to the fact that we stay off root only if we are invoked from what will
> become the non-root fs, so some sort of check to make sure we are
> actually in an initrd/initramfs of sorts might be nice, but I'm not sure
> how that would play with things like USB live images where you might
> actually want to use the option on a non-initrd environment), where as
> both preboot and preroot speak as to when it is used, but not what it
> does nor the expected life span of the action.

Ok, I guess it depends a bit on how one thinks of it, ie. whether
thinking in the context of how it was launched or the system state. I am
not really biased one way or another, I mostly care about the
functionality, so I am going to wait until tomorrow and see what other
input we get and what Neil has to say.

Once we have a consensus, I'll cook up a v3 of the patches to match that.

Cheers,
Jes