ZFS and reordering drives

[Baldur Gislason]

It is indeed.
root at enigma:~# smartctl -a /dev/ad4 | grep Capa
User Capacity:    1,000,204,886,016 bytes
root at enigma:~# smartctl -a /dev/ad6 | grep Capa
User Capacity:    1,000,204,886,016 bytes
root at enigma:~# smartctl -a /dev/ad16 | grep Capa
User Capacity:    1,000,203,804,160 bytes
root at enigma:~# smartctl -a /dev/ad20 | grep Capa
User Capacity:    1,000,204,886,016 bytes

The problematic drive now seems to have 1MB less capacity than the rest.
I uploaded the output from smartctl -a for all the drives to http://foo.is/~baldur/brokenzfs
They're all identical drives, bought at the same time and the same place.
root at enigma:~# smartctl -a /dev/ad4 | grep WD
Device Model:     WDC WD10EADS-00L5B1
Serial Number:    WD-WCAU48443245
root at enigma:~# smartctl -a /dev/ad6 | grep WD
Device Model:     WDC WD10EADS-00L5B1
Serial Number:    WD-WCAU48472608
root at enigma:~# smartctl -a /dev/ad16 | grep WD
Device Model:     WDC WD10EADS-00L5B1
Serial Number:    WD-WCAU48509212
root at enigma:~# smartctl -a /dev/ad20 | grep WD
Device Model:     WDC WD10EADS-00L5B1
Serial Number:    WD-WCAU48410170

The fact that it has shrunk in size explains why the labels at the end of the drive got lost.

Baldur

On Sat, Dec 05, 2009 at 02:21:09PM -0500, Rich wrote:
> That's quite fascinating.
> 
> What are the details on the drives?
> 
> [relatedly, use smartctl to tell you if there are any unrecoverable
> sectors? It may have shrunk the visible drive size, though I find that
> unlikely.]
> 
> - Rich