On Wed, Jun 06, 2007 at 04:24:31PM +0200, Peter Rabbitson wrote:

So I was asking if the component _number_, which is unique to a specific 
device regardless of the assembly mechanism, can be reported in case of a 
failure.

So you need to write an event-handling script and pass it to mdadm
(--program). In the script you can walk sysfs and/or call the
appropriate helper programs to extract all the information you need and
format it in the way you want. For example, if you want the slot number
of a failed disk, you can get it from /sys/block/$2/md/dev-$3/slot
(according to the manpage, not tested).

Gabor

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     MTA SZTAKI Computer and Automation Research Institute
                Hungarian Academy of Sciences
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