[OpenIndiana-discuss] zfs replace controller

[Mark]

On 16/11/2011 11:07 p.m., Matt Connolly wrote:
> Hi,
>
> I've just upgraded my SATA card from a Si3114 which only used the pci-ide driver to a Si3124 which uses the si3124 driver (and is recognised as sata by `cfgadm` etc).
>
> I was hoping that I could replace the card and have oi magically find the partitions on the same drives connected to my new controller.
>
> My setup has two pools:
>
> rpool - mirrored x 3, boot
> zpool - raidz x3 for data
>
> Once I got my machine to booting, getting "zpool" across was easy. Simply `zpool export zpool` then `zpool import zpool`, and hey presto, all works.
>
> The boot "rpool" was a bit trickier though.
>
> I thought I could do this:
>
> root at vault:/# /sbin/zpool replace rpool c4d1s0 c5t3d0s0
> invalid vdev specification
> use '-f' to override the following errors:
> /dev/dsk/c5t3d0s0 is part of active ZFS pool rpool. Please see zpool(1M).
> root at vault:/# /sbin/zpool replace -f rpool c4d1s0 c5t3d0s0
> invalid vdev specification
> the following errors must be manually repaired:
> /dev/dsk/c5t3d0s0 is part of active ZFS pool rpool. Please see zpool(1M).
> root at vault:/#
>
> But I could only get the other drives on the mirror pool by doing a `zpool detach` followed by `zpool attach` which wants to resilver the entire drive.
>
> Is this the only way to migrate a boot pool drive from one controller to another? Or can it be "moved" (replaced) without requiring the resilver?
>
>

In my experience, the boot (rpool) mirror will always break.

I don't usually export the boot device, only any other zpools.
I have moved between supported sata and sas controllers as well.

Mark.