Date: Sun, 4 Jun 2017 23:33:14 +0200 From: Polytropon <freebsd@edvax.de> To: tyler@tysdomain.com Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: various questions about booting and recovery Message-ID: <20170604233314.508eff47.freebsd@edvax.de> In-Reply-To: <f0356112-4331-2dbe-845f-66bedcb203a0@tysdomain.com> References: <f0356112-4331-2dbe-845f-66bedcb203a0@tysdomain.com>
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On Sun, 4 Jun 2017 13:02:59 -0400, Littlefield, Tyler wrote: > My biggest problem is that I always end up somehow breaking things and > then need to get eyeballs (I'm totally blind) to help me > recover/reinstall. Both systems are using zfs. I've tried to figure out > the multiboot environment, but not having much luck. I can force my > systme to reboot, but I'm curious if there's an easy way to set up > multiboot environments so I can boot configurations to test. If so, are > there some clear instructions somewhere on how to do so? Given that you're already using ZFS, Boot Environments (BEs) seems to be what you are looking for. There is a tool to easily do the "housekeeping", like creating snapshots, editing the boot attribues, and switching what to boot: beadm. Here are a few resources that will help you discover BEs: Manual page for beadm: https://www.freebsd.org/cgi/man.cgi?beadm HOWTO for beadm: https://github.com/vermaden/beadm/blob/master/HOWTO.htm How To Use beadm to Upgrade FreeBSD installed in a ZFS Boot Environment, with minimal downtime: https://www.dweimer.net/?Content=03~help_files&Page=02~beadm_and_FreeBSD_on_ZFS > Finally, can I have it boot to an environment once and if it reboots > swap back to the old one? Yes, that's the exact purpose of ZFS+BEs in a nutshell. ;-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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