After updating the boot environment switched to "opensolaris-4" in the GRUB menu. Starting this configuration yields in a sudden restart right after the first bits were initialized.
I switched back to "opensolaris-1", the last working environment. After issuing "zfs list" I saw that there is a vast list of zfs pools. And /opt has three mountpoints. NAME USED AVAIL REFER MOUNTPOINT rpool 6.13G 139G 57K /rpool rpool at install 18.5K - 55K - rpool/ROOT 5.99G 139G 18K /rpool/ROOT rpool/ROOT at install 0 - 18K - rpool/ROOT/opensolaris 54.6M 139G 2.23G legacy rpool/ROOT/opensolaris-1 11.0M 139G 3.08G legacy rpool/ROOT/opensolaris-1/opt 0 139G 1.04G /opt rpool/ROOT/opensolaris-2 3.77M 139G 3.08G /tmp/tmpBufk1y rpool/ROOT/opensolaris-2/opt 0 139G 1.04G /tmp/tmpBufk1y/opt rpool/ROOT/opensolaris-3 89.5K 139G 3.08G /tmp/tmpqh_E3C rpool/ROOT/opensolaris-3/opt 0 139G 1.04G /tmp/tmpqh_E3C/opt rpool/ROOT/opensolaris-4 5.92G 139G 3.32G legacy rpool/ROOT/opensolaris-4 at install 4.96M - 2.22G - rpool/ROOT/opensolaris-4 at static:-:2008-06-05-12:24:01 5.82M - 2.23G - rpool/ROOT/opensolaris-4 at static:-:2008-06-09-14:27:04 0 - 3.08G - rpool/ROOT/opensolaris-4 at static:-:2008-06-09-15:06:25 0 - 3.08G - rpool/ROOT/opensolaris-4 at static:-:2008-06-10-06:44:22 4.39M - 3.08G - rpool/ROOT/opensolaris-4/opt 1.04G 139G 1.04G /opt rpool/ROOT/opensolaris-4/opt at install 0 - 3.60M - rpool/ROOT/opensolaris-4/opt at static:-:2008-06-05-12:24:01 0 - 3.60M - rpool/ROOT/opensolaris-4/opt at static:-:2008-06-09-14:27:04 0 - 1.04G - rpool/ROOT/opensolaris-4/opt at static:-:2008-06-09-15:06:25 0 - 1.04G - rpool/ROOT/opensolaris-4/opt at static:-:2008-06-10-06:44:22 0 - 1.04G - rpool/ROOT/opensolaris/opt 0 139G 3.60M /opt rpool/export 145M 139G 19K /export rpool/export at install 15K - 19K - rpool/export/home 145M 139G 145M /export/home rpool/export/home at install 19K - 21K - # zfs mount rpool/ROOT/opensolaris-1 / rpool/ROOT/opensolaris-1/opt /opt rpool/export /export rpool/export/home /export/home rpool /rpool rpool/ROOT /rpool/ROOT I would like to get a clean state. So it would be nice if someone could tell me which "rpool/*" entries could be deleted and how to update the GRUB entries. Roman.
