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From: Andrew Moran <amoran@forsythia.net>
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Date: Sun, 13 Mar 2011 08:40:54 -0700
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Subject: Upgrading FreeBSd when using a zfs-only installation?
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Hallo,

I switched my system over to using a ZFS on root setup in 8.1.     I =
want to upgrade it to 8.2.  =20

Is there any changes to the =
buildworld/buildkernel/installworld/installkernel/mergemaster routine?   =
=20

The only thing I found via google was this:  =
http://forum.nginx.org/read.php?23,178896,179074     And he does a =
"mount -u ./" and a "zfs mount -a" but it's not clear to me why he's =
doing that.

--Andy