Date: Sun, 03 Oct 2021 22:23:33 +0000 From: "Daniel Lysfjord" <lysfjord.daniel@smokepit.net> To: freebsd-questions@freebsd.org Subject: Re: zfs q regarding backup strategy Message-ID: <9066d6906ef93ef4155016792cbe3ce4@smokepit.net> In-Reply-To: <59ae4222-360c-afbe-4657-0a44d0d46d81@holgerdanske.com> References: <59ae4222-360c-afbe-4657-0a44d0d46d81@holgerdanske.com> <YVZM1HnPuwIUQpah@ceres.zyxst.net> <ba54a415-da45-e662-73fe-65702c4131e2@holgerdanske.com> <YVcXsF5NFq2abE%2B7@ceres.zyxst.net> <20211001222816.a36e9acbd4e8829aed3afb68@sohara.org> <809e4f3b-9e59-eb53-5b7d-0bcf7e401cd5@holgerdanske.com> <20211002115440.85c4342a49fe6e4573c37dd0@sohara.org> <daf9ba49-82a3-670c-f59c-745e0c315f18@holgerdanske.com> <20211002205504.9d81ee94caa231ee9b008d6a@sohara.org> <69954781-9e3c-ba96-5f1e-9b4043ecf56c@holgerdanske.com> <20211003063353.7415d12917f0e514d433ae1c@sohara.org> <f5bd4ea5-1bcd-9dc7-6898-9c6f236679ae@holgerdanske.com> <20211003102037.7da16f00d478fc1e8d15c443@sohara.org>
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"David Christensen" <dpchrist@holgerdanske.com> skrev 3. oktober 2021 kl.= 21:14: > On 10/3/21 02:20, Steve O'Hara-Smith wrote: >=20 >>=20On Sun, 3 Oct 2021 01:36:51 -0700 David Christensen wrote: >>=20 >>=20The easy option is to have the archive server boot from UFS so that >> it can do things before ZFS starts up. >=20 >=20I ran into the bootpool/ zroot issue when I built a FreeBSD root-on-Z= FS USB flash drive for > maintenance purposes. I saw a few choices: >=20 >=201. Install with UFS, as you suggest. I have done this in the past and= it works. But, ZFS is a > killer feature. I want root-on-ZFS on all of my bootable devices; inclu= ding maintenance USB flash > drives. >=20 >=202. Rename bootpool and zroot on the USB flash drive. I now set a uniq= ue root pool name during > installation, but have not tried renaming bootpool. >=20 >=203. Use the FreeBSD installer USB stick rescue/ live shell. I do this = when I need to get inside an > offline FreeBSD disk. >=20 >=204. Use my Debian maintenance USB flash drive (MBR, ext4). This, plus = an external USB HDD, is how I > take/ restore/ clone OS disk images. Unfortunately, I do not see Debian= packages for GELI or UFS. I > have not tested ZFS compatability between Debian and FreeBSD. >=20 >>>=20Do you have any idea if and what hooks are available during system = boot >>> and ZFS setup? >>=20 >>=20The easiest thing is to use the rc script dependency mechanism to >> do things before zfs gets going. >=20 >=20That sounds like a possibility. >=20 >>=20KISS and UFS[1] I think. >=20 >=20+1 >=20 >=20David I run my backups from a FreeBSD server to a Debian server via SSH and zfs= send | zfs receive. As long as you have the same features enabled on bot= h sides, it works just fine.
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