ZFSROOT / Custom Kernels [or upgrades]

[krad]

2009/11/30 Philip M. Gollucci <pgollucci at p6m7g8.com>

> Hi All,
>
> 1)
> I followed this wiki link to setup our server [sigyn.apache.org]
> (Dell r710 with 4 disks mfid[0123] as raidz2)
> http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/RAIDZ2
>
> Rebooted all was well.
>
> 2) off on another 'build' box [loki.apache.org], I had compiled
> release/8.0.0 userland+kernel [with LOADER_ZFS_SUPPORT=yes].
> Whats the ETA for MFC from trunk->stable/8 for
> http://svn.freebsd.org/viewvc/base?view=revision&revision=199714
>
> ** FWIW, loki is working nicely on 8.0-RELEASE geom+zfs.
>
> 3) I nfs mounted /usr/src, and /usr/obj on sigyn from loki.
> $ cd /usr/src
> $ sudo make installkernel KERNCONF=SIGYN
>
> It fails to mount from zfs:zroot upon reboot. Via great hoops and magic
> I got back into the fixit on remote console. I didn't see a loader.old
> or a zfsboot. So I repeated the steps in wiki to install zfsboot.
> Rebooted, same diff.
>
> Jumped backed to fixit and reverted the kernel to a stock GENERIC that
> worked the 1st time.  Same error again.
> cd /boot
> $ mv kernel kernel.cust
> $ mv kernel.old kernel
>
> So assuming you are lucky enough to get a zfsroot system.  Is there an
> actual upgrade path ? Am I missing something stupid ?
>
> Any help greatly appreciated.
>
> I have a few days to play with this machine before we forgoe zfsroot and
> drop back to geom gmirror.
>
> I'm at a datacenter for $work on Monday/Tuesday so I'll be spare over
> tonight.
>
>
>
>
>
>
> --
> ------------------------------------------------------------------------
> 1024D/DB9B8C1C B90B FBC3 A3A1 C71A 8E70  3F8C 75B8 8FFB DB9B 8C1C
> Philip M. Gollucci (pgollucci at p6m7g8.com) c: 703.336.9354
> VP Apache Infrastructure; Member, Apache Software Foundation
> Committer,                        FreeBSD Foundation
> Sr. System Admin,                 Ridecharge Inc.
> Consultant,                       P6M7G8 Inc.
>
> Work like you don't need the money,
> love like you'll never get hurt,
> and dance like nobody's watching.
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if you want to install the loader make sure you do a 'cd /usr/src/sys/boot/;
make install'

also never export the zpool before you reboot as this will clear it from the
zpool.cache file and it wont boot proply