On Sat, Oct 22, 2011 at 12:36 AM, Paul Kraus <p...@kraus-haus.org> wrote:
> Recently someone posted to this list of that _exact_ situation, they loaded > an OS to a pair of drives while a pair of different drives containing an OS > were still attached. The zpool on the first pair ended up not being able to > be imported, and were corrupted. I can post more info when I am back in the > office on Monday. See the thread started on Tue, Aug 2, 2011 at 12:23 PM with a Subject of "[zfs-discuss] Wrong rpool used after reinstall!", the followups, and at least one additional related thread. While I agree that you _should_ be able to have multiple unrelated boot environments on hard drives at once, it seems prudent to me to NOT do such. I assume you _can_ manage multiple ZFS based boot environments using Live Upgrade (or whatever has replaced it in 11). NOTE that I have not done such (managed multiple ZFS boot environments with Live Upgrade), but I ASSUME you can. I suspect that the "root" of this potential problem is in the ZFS boot code and the use of the same zpool name for multiple zpools at once. By having the boot loader use the zpool directly you get the benefit of having the redundancy of ZFS much earlier in the boot process (the only thing that appears to load off of a single drive is the boot loader, everything from there on loads from the mirrored zpool, at least on my NCP 3 system, my first foray into ZFS root). The danger is that if there are multiple zpools with the same (required) name, then the boot loader may become confused, especially if drives get physically moved around. -- {--------1---------2---------3---------4---------5---------6---------7---------} Paul Kraus -> Senior Systems Architect, Garnet River ( http://www.garnetriver.com/ ) -> Sound Coordinator, Schenectady Light Opera Company ( http://www.sloctheater.org/ ) -> Technical Advisor, RPI Players _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss