[OpenIndiana-discuss] removing a disk after a replace

[Clement BRIZARD]

ok, so the resilvered just finished, I then did a remove that didn't 
work. The detach however worked perfectly.

Thank you very much

Le 07/11/2013 10:51, Peter Tribble a écrit :
> On Thu, Nov 7, 2013 at 9:31 AM, Laurent Blume <laurent+oi at elanor.org> wrote:
>
>> On 07/11/13 10:21, Peter Tribble wrote:
>>
>>> No, detach is the appropriate option here. It's a little whacky,
>>> but you're operating on the replacing vdev which is essentially a
>>> mirror and you want to detach one component of it.
>>>
>> Really? And that works using nas as the pool name? Or do you tell it to
>> use that replacing vdev? I've not seen that use so far. When replacing a
>> disk that has been removed already, I don't see how that's a mirror, since
>> the new disk must be reconstructed from the rest of the raidz, not from the
>> removed disk. I find it confusing as hell, and redundant with the use of
>> replace.
>>
> Yes, really. And on the pool, it will find the appropriate device and vdev
> on its own. Normally, you don't need to do this, because zfs should
> detach the replaced drive without intervention as soon as the resilver
> finishes. But often it doesn't, and you have to manually detach the
> replaced drive.
>
> Note that I said essentially a mirror - it should contain identical data
> to the old drive (modulo the fact that data has been modified since),
> it's not going to be a real mirror obviously. It's not redundant with
> replace, because replace initiates a resilver. As for remove vs detach,
> the way I think about this is that remove works at the pool level,
> whereas detach works at the vdev level, although given that they do
> work at different layers I can't really see why they need to have
> different names.
>