>
> Secondly, given a device that is part of an array, is there a way to
> figure out all the other components if you are using the 1.2 superblock?
> uuid=`mdadm -Eb $DEV | sed -ne 's/.* \(UUID=[^ ]*\).*/\1/p'` mdadm -Esv | grep -B1 $uuid | grep devices=
Yes, but wouldn't this only tell me about the devices that are currently in the system
and but not *all* the devices that make up the array? For example:
* say a RAID is composed of /dev/sata[1-4]
* If I use the "-ESv" option with all devices installed (they are hotplugged) then
it will list "devices=/dev/sata3,/dev/sata4,/dev/sata1,/dev/sata2"
* However, say I pull /dev/sata2 and repeat the command, all I will see is:
"devices=/dev/sata3,/dev/sata4,/dev/sata1"
What I am trying to do is determine if all the devices are present in the system
before I attempt to startup the RAID. I know I can use "--no-degraded" to get the
similiar behaviour but I'd like to be able to determine component list outside of
this mechanism.
>The information you get with 0.90 is the names the devices had last time the array was assembled, which might
>still be correct, or might not. Unreliable information can be worse than no information.
Thanks for the clarification and I couldn't agree more about the unreliable information
statement. :)
Thank you very much for your time!
Cheers,
don
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