ZFS pool corrupted on upgrade of -current (probably sata renaming)

[Freddie Cash]

On Tue, Jul 14, 2009 at 8:44 PM, Randy Bush <randy at psg.com> wrote:

> > # glabel label disk01 /dev/ad4
> > # glabel label disk02 /dev/ad6
> > # glabel label disk03 /dev/ad8
> > # zpool create pool raidz1 label/disk01 label/disk02 label/disk03
> >
> > After that, you can shuffle the drives around in the system, and the pool
> > will continue to work correctly.
>
> ooooooo!  i wish i had understood that when i built a large set of
> mirrored raid.
>
> any way to hack it ex post facto?
>

Yep.  It's as simple as:

  * label all the drives using glabel, while they're still attached to the
pool
  * use "zpool replace pool ad4 label/disk01" to replace 1 drive
  * wait for it to resilver
  * use "zpool replace pool ad6 label/disk02" to replace the next drive
  * repeat the resilver and replace until all the devices are replaced

This is what I did to one of our servers.  Works quite nicely.

There's no need to detach anything.
-- 
Freddie Cash
fjwcash at gmail.com