On 02/25/2013 10:00 am, bw wrote:
That was my understanding, too, but the instructions on the wiki say
there's no need to copy the cache file. In fact, there is no cache
file to copy, since the pool is created with
zpool create -o altroot=/mnt -O canmount=off zroot mirror
/dev/gpt/g0zfs /dev/gpt/g1zfs
No cache file. The wiki article was changed recently to eliminate
that part, the message on the wiki is: "Fix so that the default
instructions does not install data directly to the zroot pool.
Simplify instructions regarding cache files, they are no longer
needed. Fixes and cleanups."
Either the instructions are wrong, or something in my script is. I
assume it's my script.
The instructions noted above are now INCORRECT for 9.0 (I have not
tried this with 9.1 yet) as you MUST manually put the zpool.cache file
in place for it to work correctly (I tried a couple different
variations when I first setup my systems a few months ago and learned
this the hard way :-) I have *lost* of experience with ZFS under
Solaris 10 but am relatively new (about a year) to FreeBSD.
I tried it on 9.1, failed to specify.
There is a change coming down through the stable or current channel,
that doesn't require the zpool.cache file. But I don't believe that it
has made it's to any of the releases. I haven't been able to track down
the original message yet, but here is some of the relevant text from a
reply on the freebsd-stable mailing list, the subject of the thread is
"[HEADSUP] zfs root pool mounting", if you chose to search for it on
your own.
on 28/11/2012 20:35 Andriy Gapon said the following:
Recently some changes were made to how a root pool is opened for
root filesystem
mounting. Previously the root pool had to be present in
zpool.cache. Now it is
automatically discovered by probing available GEOM providers.
The new scheme is believed to be more flexible. For example, it
allows to prepare
a new root pool at one system, then export it and then boot from it
on a new
system without doing any extra/magical steps with zpool.cache. It
could also be
convenient after zpool split and in some other situations.
The change was introduced via multiple commits, the latest relevant
revision in
head is r243502. The changes are partially MFC-ed, the remaining
parts are
scheduled to be MFC-ed soon.
--
Thanks,
Dean E. Weimer
http://www.dweimer.net/
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