Date: Tue, 24 Mar 2015 11:55:09 +0000 From: Arthur Chance <freebsd@qeng-ho.org> To: Jason Birch <jbirch@jbirch.net>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Fwd: Possible (or smart) to put freebsd-boot on USB stick for root-on-ZFS? Message-ID: <5511509D.6070708@qeng-ho.org> In-Reply-To: <CAA=KUhsDHNFfyoPY0706juUXnERij8bKbQMAsNosCZjEikP_YQ@mail.gmail.com> References: <CAA=KUhvYfhJ9i_CU6Lhni0EB03zjPMBpBHOHLJ92THVs2owZxw@mail.gmail.com> <CAOgwaMtJpBboseqb295fr1Fdtw09dqFLqG5BVS4rWHPd_h2f7A@mail.gmail.com> <20150324092914.ed0ebb7f.freebsd@edvax.de> <CAOgwaMtW4RyPD1Y8U7W4JDic6PJm82Am8a%2B2P3J92i9rP4e=VQ@mail.gmail.com> <CAA=KUhvUb5-yrpvJ6QnFcvCWxv3BxbpdqFtUT8x=Tu5qJrV4zQ@mail.gmail.com> <CAA=KUhsDHNFfyoPY0706juUXnERij8bKbQMAsNosCZjEikP_YQ@mail.gmail.com>
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On 24/03/2015 09:08, Jason Birch wrote: > On Tue, Mar 24, 2015 at 7:56 PM, Mehmet Erol Sanliturk > <m.e.sanliturk@gmail.com> wrote: >> On Tue, Mar 24, 2015 at 1:29 AM, Polytropon <freebsd@edvax.de> wrote: >>> On Tue, 24 Mar 2015 00:49:46 -0700, Mehmet Erol Sanliturk wrote: > > While I appreciate the discussion this has generated, it's not quite > related to the questions I had around the freebsd-boot partition alone > being on some removable media, and I'd like to try and steer the > discussion back in that direction for my benefit (obviously ;)) and > for the benefit of anyone trawling the lists looking for a similar > answer. > > For the record, this will be for a reasonably large ZFS file server, > and so having things like the home directories live on the larger ZFS > volume (and not the mirrored SSDs) is something I'll probably be > doing. However, it's more about the partitioning and device > arrangement once the machine has booted, and that's not quite what I'm > having difficulties understanding. > > I will, of course, be trying these things out myself on the weekend. > But I'm also hoping for some experiences from those who have tried, or > who know the innards of freebsd-boot enough to know without trying, > such a set up. Sounds like you might want to take a look at the FreeNAS web site, as that's the sort of thing it does. I've not used it myself, but when configuring a new file server I picked up various ideas from the forums there, and one thing I noted in passing was that FreeNAS is often run from a memory stick, leaving the main disks entirely free for data pools. I.e. both the boot partition and / are on the memstick. You don't need all of the root partition to boot the kernel, just /boot, but I don't know whether the gpt*boot programs require /boot to be on the same drive as they are on. I suspect it's highly likely as the boot programs are usually fairly simple. This would mean you'd need two partitions on the memstick, for the boot code and /boot, and suitable entries in /boot/loader.conf > Thanks, and sorry for being a downer, Quite understandable. Discussions here are often enlightening, or at least amusing, to the general reader, but if you want a specific question answered they can be infuriating. BT,DT. -- Those who do not learn from computing history are doomed to GOTO 1
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