Re: Good practices with bectl

Hi Paul,

Really nice! I will test it soon.

Cheers

Paul Mather <paul@gromit.dlib.vt.edu> escreveu no dia quarta, 21/09/2022
à(s) 00:17:

> On Sep 20, 2022, at 6:19 PM, Alan Somers <asomers@freebsd.org> wrote:
>
> > On Tue, Sep 20, 2022 at 4:14 PM Nuno Teixeira <eduardo@freebsd.org>
> wrote:
> >>
> >> Hello to all,
> >>
> >> I will use becl for the first time for current upgrades.
> >> Just to check that I'm thinking correctly:
> >>
> >> Create a test environment for upgrade:
> >>> bectl create -r test (should I use '-r'?)
> >> Activate test:
> >>> bectl activate test
> >>> reboot
> >> ...
> >>> upgrade OS on test
> >>> reboot
> >> ...
> >> if a problem happens, reboot default from BE loader
> >> ---
> >> if everything fine destroy default and rename test to default
> >>> bectl destroy -o default
> >>> bectl rename test default
> >> repeat on next upgrade
> >>
> >> Don't know if a faster way exists with chroot or bectl jail...
> >>
> >> Any hints appreciated.
> >>
> >> Thanks,
> >> --
> >> Nuno Teixeira
> >> FreeBSD Committer (ports)
> >
> > I don't think you need to use "-r".  Also, you're forgetting one of
> > the best things about boot environments: you can upgrade them even
> > when not booted into them.  That's faster than upgrading the running
> > BE.  Here is the procedure I use:
> >
> > RELEASE=Whatever
> > sudo bectl create ${RELEASE}
> > sudo bectl mount ${RELEASE}
> > BASEDIR=/tmp/be_mount.XXXX    # Use mount point returned by bectl mount
> > sudo freebsd-update -b ${BASEDIR} -d ${BASEDIR}/var/db/freebsd-update
> > upgrade -r ${RELEASE}
> > sudo freebsd-update -b ${BASEDIR} -d ${BASEDIR}/var/db/freebsd-update
> install
> > # Ignore admonitions to reboot, since we're using a boot environment
> > sudo freebsd-update -b ${BASEDIR} -d ${BASEDIR}/var/db/freebsd-update
> install
> > sudo bectl activate ${RELEASE}
> > sudo reboot
> >
> > This general procedure works just as well if you're upgrading from
> source, too.
> >
> > sudo make DESTDIR=${BASEDIR} installworld
> > sudo mergemaster -m $PWD -D $BASEDIR -U
>
>
> There's even a handy tool in /usr/src/tools/build that can be used as a
> wrapper to install a SRC build into a new boot environment.  It's
> /usr/src/tools/build/beinstall.sh (see man beinstall(8) for details).  It
> will create a new boot environment from a source build, run etcupdate and
> so forth, and even mark the new boot environment as the one to be active on
> reboot.  All you need to do is reboot.  I've been using it for source
> upgrades for a while now without problems.  The best thing, for me, is it
> cuts out all that time doing "make installworld" and etcupdate in single
> user mode, thus minimising downtime.
>
> Cheers,
>
> Paul.
>
>
>

-- 
Nuno Teixeira
FreeBSD Committer (ports)