On Mon, Nov 9, 2009 at 8:43 AM, Jon Nelson
<jnelson-linux-raid@xxxxxxxxxxx> wrote:
> I tried to create a raid thusly:
> mdadm --create /dev/md3 --level=10 --layout=f2 --metadata=ddf
> --raid-devices=2 --assume-clean /dev/sdc1 missing
> and while I got a non-zero exit code (1), I did not get an error
> message or any other indication of failure.
>
> The misfeature is that I expected some sort of message.
Yes, there should be a message that points out that the external
metadata formats ('ddf' and 'imsm') require a container to be created
first and then raid volumes are carved out of that container. The
mdmon man page has a little blurb on containers. The 'missing' option
is currently not supported for creating containers so you would need
to modify this to something like:
mdadm --create /dev/md/ddf -e ddf /dev/sdc /dev/sdX -n 2
mdadm --create /dev/md/volume0 /dev/md/ddf --level=10 --layout=f2
--
Dan
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