Date: Wed, 15 Feb 2012 19:19:21 +0200 From: Daniel Shahaf <d.s@daniel.shahaf.name> To: Joshua Isom <jrisom@gmail.com> Cc: infrastructure-private@apache.org, freebsd-questions@freebsd.org Subject: Re: zroot won't mount after 9.0-RC2 -> 9.0-RELEASE upgrade Message-ID: <20120215171921.GA14142@daniel3.local> In-Reply-To: <4F3BD894.1070302@gmail.com> References: <20120214044816.GA18161@daniel3.local> <20120215003110.GA32543@daniel3.local> <4F3BD894.1070302@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Okay. I tried booting from the 9.0-RELEASE cd into a shell and replacing /boot/zfs/zpool.cache on with the one generated by the CD's kernel. (I did that by running 'zpool import -R -o cachefile=/tmp/...' and then copying zpool.cache over that of the live system, in a manner similar to <http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE>.) That didn't seem to have any effect: the 9.0-RC2 kernel can still boot, and the 9.0-RELEASE kernel still fails to boot, with the same error. FTR, here are the old/new zpool.cache files: % ls -al /boot/zfs/zp* -rw-r--r-- 1 root wheel 2308 Feb 15 16:43 /boot/zfs/zpool.cache -rw-r--r-- 1 root wheel 2052 Feb 15 16:41 /boot/zfs/zpool.cache.20120215rc2 Re George's suggestion -- I noticed a "Can't re-use a leaf (geom_gpart_gpt)!" error, in case it's relevant. I have also tried running: for i in 0 1 2 3 4 5; do gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 mfid$i done from the RC2 environment. RC2 still boots; the 9.0-RELEASE /boot/testkernel still doesn't. Thanks for the suggestsions. Joshua Isom wrote on Wed, Feb 15, 2012 at 10:08:52 -0600: > On 2/14/2012 6:31 PM, Daniel Shahaf wrote: > >One of our amd64 servers runs 9.0-RC2 (releng/9.0@r228325) with a zfs root. > > > >It fails to boot the 9.0-RELEASE (releng/9.0@r229305) GENERIC kernel > >(self compiled) with a mountfrom error: > > > > http://people.apache.org/~danielsh/infra/loki-20120215-mountfrom.png > > mountfrom> zfs:zroot > > Trying to mount root from zfs:zroot []... > > Mounting from zfs:zroot failed with error 2. > > > >We've tried to upgrade the zpool format 15->28; the symptoms are > >unchanged. (The zroot fs is at version 4.) > > > >Why does 9.0-RC2 boot while 9.0-RELEASE (as /boot/testkernel) doesn't? > >What can do to boot 9.0-RELEASE from our zfs root filesystem? > > > >Thanks. > > > > Try booting a fixit CD/USB and mounting the zfs pool. It looks like > your pool is set up like mine. If it mounts, the way zfs mounts > everything, you'll overlay your fixit file system with your zroot. > It'll make it annoying to fix, especially dealing with zpool.cache. > If it mounts, make a copy of the cache file. > > I switched from a zpool with two disks to a zmirror, with a third > disk to help hold data. It wasn't fun, but it can be done. One > problem I had was getting zpool.cache to work properly on reboot. I > had to do the overlay mount, and I think I killed the power to > prevent zfs from removing the file. I'd suspect a zpool.cache > problem. ZFS doesn't think your zroot was mounted so doesn't try to > mount it even though the bootloader finds the kernel. > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20120215171921.GA14142>