Date: Thu, 31 Dec 2009 14:12:33 -0800 From: George Hartzell <hartzell@alerce.com> To: Eric <eric@mikestammer.com> Cc: freebsd-stable@freebsd.org, hartzell@alerce.com Subject: Re: ZFS and disappearing glabels Message-ID: <19261.8657.603888.598018@gargle.gargle.HOWL> In-Reply-To: <4B3D15BB.2080808@mikestammer.com> References: <19261.3612.150477.365986@gargle.gargle.HOWL> <4B3D15BB.2080808@mikestammer.com>
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Eric writes: > On 12/31/2009 1:48 PM, George Hartzell wrote: > > > > I've set up a system as described here. > > > > http://wiki.freebsd.org/RootOnZFS/ZFSBootPartition > > > > Using the 8.0 Release DVD and then csup'ing to RELENG_8 and > > rebuilding. > > > > I set it up with a single drive, the only change that I made was that > > after creating ad10s1a I glabeled it as disk0, then added > > /dev/label/disk0 to the pool. > > > > That worked great. > > > > Then I added a second larger drive, giving it an MBR, a bsd label, and > > an s1a partition that I glabeled as disk1. I attached that to the > > pool and it resilvered happily. > > > > However, when I rebooted I found that the pool now consists of > > label/disk0 and ad12s1a. I detached ad12s1a, relabeled it as disk1, > > and attached disk1 to the pool again. It resilvered fine. Running > > strings on /boot/zfs/zpool.cache shows /dev/label/disk0 and > > /dev/label/disk1. > > > > But, when I reboot I find I'm back to label/disk0 and ad12s1a. At > > this point strings on zpool.cache lists /dev/label/disk0 and ad12s1a. > > > > I'd like to have the device independence of using labels, and am also > > worried about problems caused by the different "disk" sizes (since the > > glabeled partition is 512 bytes smaller). > > > > Any ideas what's going wrong? > > > > Thanks, > > > > > i ran into the same issues. every reboot i would have to fight to > relabel the drive (on 7.2). I upgraded to 8 and used GPT for everything > (and ZFS on root) and i have not had any issues. I would recommend going > that route. You can still label the drives with labels. > > This is the docs I followed: > > http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/Mirror > > Works great! I'm running something like that on another machine, but can't on this one. The gory details include the fact that this is a mac pro. It's EFI firmware only does magic bios emulation if it sees an MBR formatted disk and so setting things up via GPT won't work for me. I did try it using the link that you pointed to above and it wouldn't boot. Tried it via the apple's firmware "choose a boot disk by holding down the option key" trick and via rEFIt. g.
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