I'm having problems figuring out how to configure ZFS root under the new ZFS 
boot system. I'm not interested in ZFS boot, only in ZFS root.

My system consists of  two 4-disk raidz arrays configured as a single pool. The 
disks have EFI labels and are not bootable. The computer boots off an USB 
dongle that has a UFS partition to hold the kernels and boot_archives of 
several solaris versions (trail of upgrades=)).

I've been trying to upgrade to snv66 and I've been using a single disk ZFS pool 
(not the whole 8-disk pool, more about that in another post). I installed snv66 
in Parallels and ufsdumped the filesystem to the one disk pool. The one disk 
pool also has a snv55b install that I can boot into.

I tried to configure the snv66 like in the older ZFS root system, but I don't 
seem to be able to make it work. The kernel and boot_archive are located in 
/snv66 directory on the USB stick. Apparently the kernel defined in the grub 
kernel line is not the kernel that is loaded. I had to copy the /snv66 
directory to the root dataset so that the kernel could load itself(?) from 
there (and not from the location defined by the kernel line). (Sounds like a 
bug to me.) This is not a problem with the one disk environment but will 
apparently be a problem when the root is moved to the 8-disk pool. (I'm not 
sure if the new ZFS boot's single disk pools only -limitation still applies at 
this point.)

After that the kernel just panics and floods the screen with text for some 
hundred milliseconds before rebooting so I don't know what the next problem is 
as I don't have serial console or dump device.

Possible reasons that come to mind:
1) The install/dump from Parallels is not good and is causing the problems
2) There is some configuration gotcha with the new system I'm not aware of
3) Build 66 bugs and panics whenever it sees zfsroot (like build 59 did)

Any ideas?

- Jesse Hallio
 
 
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