Ok. What worked for me was booting with the live CD and doing: pfexec zpool import -f rpool reboot
After that I was able to boot with AHCI enabled. The performance issues I was seeing are now also gone. I am getting around 100 to 110 MB/s during a scrub. Scrubs are completing in 20 minutes for 1TB of data rather than 1.2 hours. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss