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Re: Booting from ZFS RaidZ Paul Wootton Wed May 27 13:01:08 2009

Doug Rabson wrote:

On 27 May 2009, at 16:38, Paul Wootton wrote:

Hi,

With the recent changes allowing RaidZ boot, I thought I would finally drop my mirror pack and go RaidZ.

The only problem I now have is
demophon# zpool set bootfs=DemoPool/root DemoPool
cannot set property for 'DemoPool': operation not supported on this type of pool

Is this still a work in progress, or do I have something a-miss?

I am using current as of today
"demophon# uname -a
FreeBSD demophon 8.0-CURRENT FreeBSD 8.0-CURRENT #17: Wed May 27 13:18:06 BST 2009 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/DEMOPHON amd64"

This is a limitation which I will remove as soon as I have a little time to work on it. Basically, Solaris can only boot from simple structures such as mirrors and collections of mirrors. The code enforces this by stopping you from setting the bootfs property if the pool configuration is too complex for the Solaris boot code. I will simply remove this limitation for FreeBSD since we can now boot from any pool configuration.

In the meantime, you can still boot if you put your root filesystem files in the root of the pool. Not ideal I know but I'll try to fix it properly soon.


This does seem to work correctly for me as I get a BTX crash (see below)

Verifying DMI Poll Data .............
\
FreeBSD/i386 boot
Default:DemoPool:/boot/kernel/kernel
boot:
|
int=00000000  err=00000000  elf=00010083  eip=00192adf
eax=00192e02a  ebx=df5610ed  ecx=d485b986  edx=00000000
esi=00000040  edi=000935d0  ebp=0009339c  esp=00000000
cs=0008 ds=0010 es=0010 fs-0010 gs=0010 ss=0010
cs:eip=c5 e4 00 66 0f 73 dc 02-ff e4 b8 8d 8d bc f2 2a
 e9 ba e6 f4 2a 8a d8 24-df 86 c4 be 00 2b e9 8b
ss:esp=16 e8 00 f0 16 e8 00 f0-c3 e2 00 f0 16 e8 00 f0
 16 e8 00 f0 54 ff 00 f0-b8 6e 00 f0 16 e8 00 f0
BTX halted





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