From owner-freebsd-hackers@freebsd.org Fri Jan 15 15:02:27 2016 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BEC04A84F3E for ; Fri, 15 Jan 2016 15:02:27 +0000 (UTC) (envelope-from karl@denninger.net) Received: from mail.denninger.net (wsip-70-169-168-7.pn.at.cox.net [70.169.168.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 6B46F1B0B for ; Fri, 15 Jan 2016 15:02:27 +0000 (UTC) (envelope-from karl@denninger.net) Received: from [192.168.1.40] (Karl-Desktop.Denninger.net [192.168.1.40]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.denninger.net (Postfix) with ESMTPSA id AEDBD22BB99 for ; Fri, 15 Jan 2016 08:52:56 -0600 (CST) Subject: Re: EFI/ZFS Update: successful tests, need more complex vdevs To: freebsd-hackers@freebsd.org References: <9418E44F-114E-4ABA-A32D-416297BCDA9F@metricspace.net> <56985C6A.6040209@multiplay.co.uk> <569900CD.2040003@metricspace.net> <569906A1.8040700@multiplay.co.uk> From: Karl Denninger Message-ID: <569907B2.4070700@denninger.net> Date: Fri, 15 Jan 2016 08:52:34 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: <569906A1.8040700@multiplay.co.uk> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-512; boundary="------------ms040907010807050003010503" X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Jan 2016 15:02:27 -0000 This is a cryptographically signed message in MIME format. --------------ms040907010807050003010503 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable THAT's useful around here :-) On 1/15/2016 08:48, Steven Hartland wrote: > ZFS Boot Environments (BE) support was also wired up to Beastie last > night by Allan for those interested in that :) > > On 15/01/2016 14:42, krad wrote: >> Thanks this is useful information. I did have a look at the way pc >> bsd was using grub to boot rootonzfs systems, and they used the >> Kfreebsd options. This looked kind of handy as you might have been >> able to specify the zfs file system to boot off. This would be a real >> boost the boot environments as you could easily choose which one to >> boot into, making upgrade recovery far easier. >> >> Presumably the freebsd@ part in your setup refers to the zfs file >> system? In which case you could have multiple menu entries with >> different file systems specified, this is assuming the grub config is >> on the efi disk though? >> >> I'm also curious how this would his work when the are multiple pools >> on the same disk for some reason. >> >> >> >> On 15 January 2016 at 14:23, Eric McCorkle > > wrote: >> >> On 01/15/16 06:51, Renato Botelho wrote: >> >> On Jan 15, 2016, at 00:41, Steven Hartland >> >= >> wrote: >> >> Just wanted to let everyone know that I just finished >> committing these changes to the tree. >> >> Huge thanks to Eric's for his work on this, as well as >> everyone else who contributed. >> >> I've set the target for MFC of 2 weeks, so I hope to be >> able to get this into stable/10 before the 10.3 slush, so >> if you're interested in this change please test a head >> build > r294068 ASAP. >> >> >> Great work, thanks! >> >> Is there a way to move a installed ZFS system to EFI? >> >> >> (Refer to Steven's guide for the simple case where you can create >> an EFI partition) >> >> >> =3D=3D Using GRUB =3D=3D >> >> GRUB can be used with loader.efi on a ZFS system (I use this >> myself, as I have a Gentoo install in the same ZFS volume) >> >> Make sure you install GRUB with EFI support (the ports collection >> will handle this). The grub port comes with a script that >> auto-detects filesystems and sets up a grub.cfg in /boot/grub/. >> However, that script won't properly detect ZFS partitions, so >> you'll need to add it manually. The entry is simple. >> >> I have a zfs volume called "data", which has the freebsd system >> root on the filesystem data/freebsd. The GRUB entry then is: >> >> menuentry "FreeBSD" { >> search.fs_label data ZFS_PART >> chainloader ($ZFS_PART)/freebsd@/boot/loader.efi >> } >> >> The first line searches for the volume "data" and binds its device= >> to the variable ZFS_PART. The second specifies that the chained >> bootloader is under the filesystem "freebsd" (the @ at the end of >> the name denotes a filesystem, not a path), with the path >> /boot/loader.efi >> >> >> =3D=3D Disks without enough space to make the GPT or EFI partition= =3D=3D >> >> If you have a ZFS filesystem on an MBR disk, or on a GPT disk >> without enough space to create a workable EFI partition, you can >> use one of ZFS's lesser-known features: zfs send/recv. >> >> ZFS send and recv allow an entire filesystem to be serialized out >> to a stream, and then read back in. You can use this to dump the >> entire filesystem out to a removable storage or an NFS mount. =20 >> Then, use an install disk or memstick and repartition your drive, >> using zfs recv to recreate the filesystem. >> >> >> =3D=3D On a Mac =3D=3D >> >> (Note: this is based on research that is several years old at this= >> point. Also, I never actually field tested this myself.) >> >> Macs are wierd, due to their non-standard EFI. The Mac EFI >> implementation looks for an HFS+ partition, and loads the >> "blessed" file as the EFI bootloader (this is a special >> filesystem-level metadata unique to HFS+ filesystems). >> >> In order to do an EFI boot on a mac, you'd need some way of >> manufacturing an HFS+ partition containing only your bootloader, >> with that file being "blessed". The easiest way to do this would >> be to use a Mac OS install to create an empty HFS+ filesystem, add= >> your boot loader, then use a shell command to "bless" it (this >> command exists, but I don't remember what it is offhand). It also= >> wouldn't be too hard to write a tool to create an HFS+ image from >> a file (I have a half-written implementation of that lying around >> somewhere). >> >> Also note that Macs expect a 200MB EFI partition (which isn't >> actually used for anything), and I've heard reports of the >> firmware flaking out if it's not there. >> >> I believe there are also GRUB and rEFIt options for Mac, if you >> don't want to go to these lengths. >> >> _______________________________________________ >> freebsd-hackers@freebsd.org >> mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-hackers >> To unsubscribe, send any mail to >> "freebsd-hackers-unsubscribe@freebsd.org >> " >> >> > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to > "freebsd-hackers-unsubscribe@freebsd.org" --=20 Karl Denninger karl@denninger.net /The Market Ticker/ /[S/MIME encrypted email preferred]/ --------------ms040907010807050003010503 Content-Type: application/pkcs7-signature; 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