Re: System problems - some progress

On Thu, 2011-03-24 at 15:15 -0500, Paul Hartman wrote:
> On Thu, Mar 24, 2011 at 1:16 PM, Lindsay Haisley <[email protected]> wrote:
> > The root of this problem is that on the old kernel, there are both
> > a /dev/hda1 and a /dev/sda1.  The former is a partition on an old PATA
> > drive, while the latter is a proper component of md0, but when
> > everything becomes /dev/sdNx, there's an obvious conflict and the RAID
> > subsystem is getting confused and is obviously not seeing it's sda1.
> 
> Possible alternative is to disable raid autodetection and define the
> arrays by UUID in /etc/mdadm.conf so hopefully the device names become
> irrelevant at that point.

This is a good idea.  I can turn off RAID autodetection in the kernel
config and spec RAID1 instead, since the root fs isn't on a RAID array.

I've found a number of references to putting UUIDs in ARRAY lines
in /etc/mdadm.conf to define the UUID of an array, but none yet to using
UUID specs in DEVICE lines, all of which I've found so far in the online
literature use /dev/xxxx specs.  Before I take this step I'm going to
find a more kernel-specific list and ask if this would be appropriate.
I've tripped on RAID array errors before at the expense of days of work
to reconstitute systems and their data.  I want to make sure this is
kosher before I go there.

Thanks! 

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