[OpenIndiana-discuss] ZFS pool slow as molasses

[Chris Mosetick]

If it's not too late already, my suggestion at this point is to go back to
ide mode in the bios, boot the machine and rsync your data to another
physical machine through the network, then do a clean install of openindiana
with your bios set to ahci mode, create new pools, then rsync your data back
to the new pools.  Time consuming, yes.  But virtually guaranteed to work.

It would seem that this machine would have worked better with ahci mode when
you first installed opensolaris on it back in the day.  This is a lesson for
everyone to check their bios settings thoroughly before installing a new
operating system.