Date: Sun, 3 Oct 2021 12:13:32 -0700 From: David Christensen <dpchrist@holgerdanske.com> To: Steve O'Hara-Smith <steve@sohara.org> Cc: freebsd-questions@freebsd.org Subject: Re: zfs q regarding backup strategy Message-ID: <59ae4222-360c-afbe-4657-0a44d0d46d81@holgerdanske.com> In-Reply-To: <20211003102037.7da16f00d478fc1e8d15c443@sohara.org> References: <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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On 10/3/21 02:20, Steve O'Hara-Smith wrote: > On Sun, 3 Oct 2021 01:36:51 -0700 David Christensen wrote: > The easy option is to have the archive server boot from UFS so that > it can do things before ZFS starts up. I ran into the bootpool/ zroot issue when I built a FreeBSD root-on-ZFS USB flash drive for maintenance purposes. I saw a few choices: 1. 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; including maintenance USB flash drives. 2. Rename bootpool and zroot on the USB flash drive. I now set a unique root pool name during installation, but have not tried renaming bootpool. 3. Use the FreeBSD installer USB stick rescue/ live shell. I do this when I need to get inside an offline FreeBSD disk. 4. 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. >> Do you have any idea if and what hooks are available during system boot >> and ZFS setup? > > The easiest thing is to use the rc script dependency mechanism to > do things before zfs gets going. That sounds like a possibility. > KISS and UFS[1] I think. +1 David
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