Re: [gentoo-user] Re: [OT] Moving system from "single-disk" to RAID-1 configuration

[Mike Williams <mike@gaima.co.uk>]

On Tuesday 25 October 2005 06:01, Francesco Talamona wrote:
> > DEVICE partitions
> > ARRAY /dev/md0 uuid=8ef83d67:79b230ba:6cc967c3:208b9224
>
> AFAIK fd partition type is mandatory. Anyway is good to know that I can
> avoid explicit node names in config files.

I'm not sure it's mandatory, but there really is no reason not to do so.

> > I have a SATA card that doesn't have in kernel drivers, so I have to
> > load a module, which naturally means the kernel can't autostart all
> > my arrays, but mdadm can without me having to tell it any device
> > nodes.
>
> How can you prevent it to start in degraded mode?

I don't have the raid drivers compiled into the kernel :)
I have 3 arrays, 2 of which have more devices on the SATA card than the array 
can loose. mdadm would warn me by email if it detected any array in degraded 
mode anyway.

I'm not sure what problem you had that meant you could only create a degraded 
array. But if you boot from a gentoo livecd you can create a mirror from an 
existing disk *without* losing any data, or needing to backup. If you specify 
the disk/partition with the data on it you want to keep *first* to mdadm, 
that data will get replicated to the others.

-- 
Mike Williams
-- 
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