On Wed, March 16, 2011 2:36 pm, Randal L. Schwartz wrote: > > Randal> SOMEONE here knows. Please help. > > So, nobody knows? > > Most of the other answers were about a source-code upgrade, not a binary > upgrade.
I thought Matthew Seamans' answer sounded pretty definitive: > A system update via freebsd-update or otherwise won't touch whatever > bootblocks you have installed. So if you have already installed > gptzfsboot and your system already boots ZFS v12 then it will continue to > boot ZFS v12 without your touching anything to do with boot blocks. > > However, with the 8.1 -> 8.2 upgrade, you get (inter-alia) ZFS v13 > support (I think it's v13 -- all my personal kit is running the stable/8 > v28 patchset...) plus equivalent zpool version bump. The 8.1 bootblocks > don't understand ZFS v13. If you wish to update the on-disk formats of > your ZFS stuff: 'zpool upgrade -a' or 'zfs upgrade -a' then you *will* > need to reinstall the gptzfsboot boot-blocks. > > You don't have to update the ZFS formats, but you'll miss out on various > performance and bug-fixes if you don't. > > Given that the gptzfsboot boot blocks are backwards compatible to older > ZFS versions, highly recommended to update the boot blocks even if you > aren't intending to upgrade the ZFS bits just yet. Just as an > anti-foot-shooting measure. By that: You don't _have_ to do anything. But it is probably a good idea. Daniel T. Staal --------------------------------------------------------------- This email copyright the author. Unless otherwise noted, you are expressly allowed to retransmit, quote, or otherwise use the contents for non-commercial purposes. This copyright will expire 5 years after the author's death, or in 30 years, whichever is longer, unless such a period is in excess of local copyright law. --------------------------------------------------------------- _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"