ZFS: Can't find pool by guid

[Julian Elischer]

On 28/4/18 8:46 pm, Willem Jan Withagen wrote:
> Hi,
>
> I upgraded a server from 10.4 to 11.1 and now al of a sudden the 
> server complains about:
>     ZFS: Can't find pool by guid
> And I end up in the boot prompt:
>
> lsdev gives disk0 withe on p1 the partion that the zroot is/was.
>
> This is an active server, so redoing install and stuf is nog going 
> to be real workable....
>
> So how do I get this to boot?
>
> Thanx,
> --WjW
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did you try

   zpool import -d /dev

(when booted from memstick)