That's excellent information Richard.
I have just exported the faulted pool (the disks aren't attached), but
what you are suggesting is verified by looking at the cache as it is -
I can see this information for my rpool mirror disks.
One other note - I see that using the old prtvtoc | fmthard trick to
create my 2nd mirror disk for the rpool created a generic label, and
it looks like zdb only stores the disk label:
# format
AVAILABLE DISK SELECTIONS:
0. c4t0d0 <ATA-ST3250310NS-SN04 cyl 30398 alt 2 hd 255 sec 63>
/p...@0,0/pci15d9,1...@5/d...@0,0
1. c4t1d0 <DEFAULT cyl 30398 alt 2 hd 255 sec 63>
/p...@0,0/pci15d9,1...@5/d...@1,0
# zdb
...
children[0]
type='disk'
id=0
guid=9660743866801172401
path='/dev/dsk/c4t0d0s0'
devid='id1,s...@f00439638498493aa00037d740001/a'
phys_path='/p...@0,0/pci15d9,1...@5/d...@0,0:a'
whole_disk=0
DTL=101
children[1]
type='disk'
id=1
guid=5364095963942871931
path='/dev/dsk/c4t1d0s0'
devid='id1,s...@ast3250310ns=____________9sf06bc8/a'
phys_path='/p...@0,0/pci15d9,1...@5/d...@1,0:a'
whole_disk=0
DTL=99
Cfgadm, however, returns the full serial number and model number for
each disk. So I think storing the information cfgadm collects in
zpool.cache would be preferable to reading disk labels.
On Sat, Mar 14, 2009 at 12:47 PM, Richard Elling
<richard.ell...@gmail.com> wrote:
> Toby Thain wrote:
>>
>> On 14-Mar-09, at 12:09 PM, Blake wrote:
>>
>>> I just thought of an enhancement to zfs that would be very helpful in
>>> disaster recovery situations - having zfs cache device serial/model
>>> numbers - the information we see in cfgadm -v.
>>
>> +1 I haven't needed this but it sounds very sensible. I can imagine it
>> could help a lot in some drive replacement situations.
>
> What do your devids look like? Mine are something like:
> devid='id1,s...@sata_____st3500320as_________________9qm3fwft/g'
>
> Where ST3500320AS is the model number and 9QM3FWFT is the serial
> number. These are stored verbatim in the zpool.cache.
> -- richard
>
>
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