Date: Mon, 09 Feb 2015 07:40:39 +0000 From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-stable@freebsd.org Subject: Re: FreeBSD ZFS with Boot Environments (Was: 10.1-RELEASE: bsdinstall on zfs: /var and /usr on zroot/ROOT/default) Message-ID: <54D86477.8000709@FreeBSD.org> In-Reply-To: <4483B8DB-D7C6-4337-A264-8125003CB7BD@gromit.dlib.vt.edu> References: <20150208113656.GE3395@lan.sigsys.de> <alpine.BSF.2.00.1502082341020.83088@gw-old.x-art.ru> <20150208232623.GA5255@lan.sigsys.de> <54D7F529.4030103@quip.cz> <4483B8DB-D7C6-4337-A264-8125003CB7BD@gromit.dlib.vt.edu>
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On 08/02/2015 23:59, Paul Mather wrote:
> See, also, the sysutils/beadm port for how to create and use boot
> environments under FreeBSD.
beadm is great. I keep meaning to contribute a 'beadm chroot BOOTENV'
verb, which would mount the BE, mount a devfs filesystem inside it and
chroot to the BE -- and then undo all that once you exit from the BE.
Some day...
> I don't know if the bsdinstall ZFS partitioning option is compatible
> with sysutils/beadm boot environments, but, from what I've seen in
> this thread, it looks like it is.
I find the bsdinstall layout is /close/ to what I like to use for a
setup with Boot Environments, but needs some tweaking.
* Use /home as a separate ZFS directly rather than symlinking from
/usr/home (It's not clear to me why this isn't the default.
Everything treats home directories as '/home/username' and with
ZFS there's no need to make .../home a child of /usr because of
partitioning or space usage considerations.)
* Create an overlay /var (ie. with canmount=3Dno) to act as a mount
point for /var/log, /var/tmp, /var/crash *outside* the boot
environments.
* Ditto with /usr or /usr/local for some special use directory
heirarchies under /usr -- eg. /usr/local/pgsql for Postgresql
servers.
Otherwise the BE consists of all of /, /usr and /var.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil.
PGP: http://www.infracaninophile.co.uk/pgpkey
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