Removal of mirror vdevs is planned _eventually_, but last I spoke to
Matt about it it wasn't a super high priority. 

If getting rid of the
mirror vdev is important to you, you should probably be scheming on how
to make a backup/destroy/recreate happen. 

Especially since you appear
to have set those SSDs to ashift=9. That absolutely _murders_ the
performance of Samsung 850s. I've seen properly-ashifted _rust_ drives
outperform Samsungs on ashift=9. 

On 2018-05-05 11:44, [email protected]
wrote: 

> I have a pool that broke years ago by mistakingly adding a
disk without redundancy as a top level vdev. 
> 
> It looks like this:
> config: 
> 
> NAME STATE READ WRITE CKSUM 
> store ONLINE 0 0 0 
>
raidz2-0 ONLINE 0 0 0 
> gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
>
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/ST3000VN0001-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/ST3KNM0025-REDACTED----REDACTED-ZFS ONLINE 0 0 0 
gpt/WD30EFRX-S/N-REDACTED-ZFS ONLINE 0 0 0 
gpt/ST3000VN000-REDACTED-ZFS ONLINE 0 0 0 
> mirror-2 ONLINE 0 0 0 
>
gpt/SSD850Pro-S/N----REDACTED-FailZFS ONLINE 0 0 0 block size: 512B
configured, 4096B native 
> gpt/SSD850Pro-S/N===-REDACTED-FailZFS ONLINE
0 0 0 block size: 512B configured, 4096B native 
gpt/SSD850Pro-S/N===-REDACTED-FailZFS ONLINE 0 0 0 block size: 512B
configured, 4096B native 
> 
> errors: No known data errors 
> 
> Full
of hope, I upgraded the FreeBSD only to hit the wall: 
> # zpool remove
store mirror-2 
> cannot remove mirror-2: invalid config; all top-level
vdevs must have the same sector size and not be raidz. 
> 
> The
question is: will I ever be able to fix this, or should I look into
backup/destroy/create? 
> 
> Hopefully this is the right place for such
question. Thank you. 
> / openzfs-developer [1] / Permalink [2] Delivery
options [3]

 

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