thanks for the help folks esp. Mikee who had experienced a similar problem and provided a concise solution
basically, after an excruciating download of the sxce_b94.iso, I was able to boot from the dvd, "zpool import -f rpool". this gave me failures to mount x4 "unable to create mount point". so i was kinda worried about the loss of the whole file system, but scrubbed and it was ok and "zfs list" showed all teh requisite zfs directories. so finally, I gathered up some courage and "installgrub /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c2d0s0" seemed to write out what I assume is a new MBR. tried to also installgrub on the other disk in the mirror c3d0 and failed over several permuations"cannot open/stat /dev/rdsk/c3d0s2" was the error msg. however a reboot from dsk/c2dos0 gave me a healthy and unchanged grub stage2 menu and functioning system again . whew Although I cannot prove causality here, I still think that the zpool upgrade ver.10 -> ver.11 borked the MBR. indeed, probably the stage2 sectors, i guess. I also seem to also only have single MBR between the two disks in the mirror. is this normal? This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
