Using an HP DL 360 G5 with an HP smart array P400i controller. Created 2 mirrored (hardware) RAID volumes. I installed Solaris onto a ZFS partition during setup onto one of the mirrored volumes. Used the second mirrored volume to create another ZFS pool. I patched the OS, rebooted, then ran zpool upgrade followed by zfs upgrade and rebooted again. This time, the boot partition was gone and I was left at the open grub prompt. I reinstalled the OS, patched, rebooted, and ran zpool upgrade and rebooted fine. I was able to import the other zfs pool (on the second mirrored volume) ? now that one is running zfs v4 and the root partition is running zfs v3, but I?m reluctant to try and upgrade zfs again.... 1. Is this a supported hardware/software configuration? 2. Has anybody seen this before? I found this: http://blogs.sun.com/pomah/entry/zpool_upgrade_broke_grub Don'' t know if it''s related or not... -- This message posted from opensolaris.org