glabel and real disk IDs

[Marcel Moolenaar]

On Jul 9, 2009, at 1:01 PM, Pawel Jakub Dawidek wrote:

>
>> The purpose of this would be to have a unique disk ID without  
>> explicitly
>> setting a label (e.g. as is commonly advised for ZFS and drive  
>> swapping).
>
> I guess you advice that? There is no such need when it comes to ZFS.  
> ZFS
> can find his components just fine without using their names. Disk IDs
> were added for ZFS in the past, but now they serve no purpose, I'd
> prefer to remove them altogether or just leave them for informational
> purpose as they exist now.

Just as an FYI:

I see ZFS getting confused when disks are shuffled around.
The confusion is the result of having device paths stored
in the ZFS label match the device name of some other vdev
that part of the same pool.

Replacing a device with itself doesn't help, because ZFS
complains that the vdev is part of an active pool in that
case. It seems that only labels will work here...

-- 
Marcel Moolenaar
xcllnt at mac.com