On Mon, 26 May 2014 21:57:15 +0200 George Duffield
<forumscollective@xxxxxxxxx> wrote:
> >> - Can it be renamed to md0?
> >
> > Sure.
> > If this is being assembled by the initrd, then either the initrd must set the
> > hostname to "fileserver" before mdadm gets to assemble the array, or the
> > initrd must contain an /etc/mdadm.conf which lists "/dev/md0" has having the
> > UUID of this array.
> >
> > NeilBrown
> >
>
> I'm learning a few things the hard way here e.g. I had saved my
> mdadm.conf to a file in the home folder of the default user so I could
> reference it later if needs be - no flash, no file. Next time email
> it to myself.
>
> If I were to run sudo update-initramfs -u would that restore things or
> pretty much make md127 permanent.
I can't see. Each distro has their own 'initramfs' building code.
What I would probably do is:
- run update-initramfs
mkdir /tmp/i; cd /tmp/i; zcat /boot/initramfs | cpio -idv
# note, filename might be wrong
- inspect /tmp/i/etc/mdadm.conf and fstab etc etc and make sure
"/dev/md0" is used and "/dev/md127" isn't.
- make changes as necessary
- find | cpio -oc | gzip --best > /boot/initramfs.test
then figure a way to boot from /boot/initramfs.test
>
> In the event update-initramfs -u is not the way to go, it there an
> example of a good mdadm.conf floating about that I can reference to
> make the necessary changes?
It is really worth making the effort to read the man page and understand how
to make your own /etc/mdadm.conf
mdadm -Ds
is a good start, but should be examined and edited to make sure it matches
your requirements.
All you really need is:
ARRAY /dev/md0 UUID=whatever:xxxxxxx......
That is it.
NeilBrown
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