Date: Sun, 10 Mar 2013 13:36:55 -0700 From: Cody Ritts <cr@caltel.com> To: freebsd-fs@freebsd.org Subject: Re: Aligning MBR for ZFS boot help Message-ID: <513CEEE7.8090400@caltel.com> In-Reply-To: <alpine.BSF.2.00.1303101349540.7637@wonkity.com> References: <513C1629.50501@caltel.com> <alpine.BSF.2.00.1303101006490.5989@wonkity.com> <513CD9AB.5080903@caltel.com> <alpine.BSF.2.00.1303101326530.7218@wonkity.com> <513CE369.4030303@caltel.com> <alpine.BSF.2.00.1303101349540.7637@wonkity.com>
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I have never seen ANY reference to installing the /boot/zfsboot with gpart. And if you look at how that ZFS boot code is installed, it is not like any of the other boot codes that gpart does install. I dont even know how you would construct the syntax. the bootcode arguments seem to be GPT and MBR specific, and mutually exclusive. https://wiki.freebsd.org/RootOnZFS/ZFSBootPartition#A_Installing_FreeBSD_to_the_ZFS_filesystem I know that if I leave either of those dd commands out when installing, the system will not boot. If I leave out the ada0s1 boot code, the system just hangs after mbr is run. If I leave out the ada0s1a boot code, I get an error. (I dont remember what) Ultimately, I am aligned and running so I am happy enough. 32MB is an acceptable loss. I am burnt out on struggling with the bootloader. I have been doing it in various ways for DAYS now trying to just figure out ZFS boot at all. There are a lot of broken (or old?) ZFS boot howtos that made the process more difficult than it should be for me because I wasnt luck enough to stumble onto the "correct" articles right off the bat. I do everything the hard way :) Thanks Cody On 3/10/13 12:51 PM, Warren Block wrote: > On Sun, 10 Mar 2013, Cody Ritts wrote: > >> Yeah, just for clarity: >> >>> root@lightning# gpart show da0s1 >>> => 0 39068064 da0s1 BSD (18G) >>> 0 32 - free - (16k) >>> 32 39067648 1 freebsd-zfs (18G) >>> 39067680 384 - free - (192k) >> >> and >> >>> dd if=/boot/zfsboot of=/dev/da0s1 count=1 >>> dd if=/boot/zfsboot of=/dev/da0s1a skip=1 seek=1024 >> >> will not boot. > > But is that putting zfsboot in the right place? Try installing zfsboot > with gpart. >
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