Re: "big" machines running Debian?
Lennart Sorensen wrote:
> On Sat, Feb 28, 2009 at 10:14:15AM +0100, Goswin von Brederlow wrote:
>> Hot-spare devices work just fine (see below).
>>
>> What doesn't exists afaik are global hot spares. E.g. 7 disks, two 3
>> disk raid5 and one spare disk for whatever raid fails first. You would
>> have to script that yourself.
>
> Any idea what the "spare groups" mentioned in the mdadm documentation are?
>
> I would have guessed it was something to do the global spare thing.
>
I haven't tested shared hot spares myself but this article (among quite
a few other hits from google: shared hot spare) indicates that it is
quite possible with mdadm running in daemon mode:
http://www.redhat.com/magazine/021jul06/departments/tips_tricks/
...and it appears Len was completely right about the spare-group keyword.
Cheers, Jonas
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