Booting from ZFS RaidZ
paul at fletchermoorland.co.uk
Fri May 29 17:18:42 UTC 2009
Doug Rabson wrote:
> On 27 May 2009, at 20:55, Paul Wootton wrote:
>> Doug Rabson wrote:
>>> On 27 May 2009, at 16:38, Paul Wootton wrote:
>>>> 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 paul at demophon:/usr/obj/usr/src/sys/DEMOPHON
>>> 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
>> 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
> How frustrating. Can you give me some idea on your ZFS pool
> configuration. Also, if you can dig out the symbol table for
> /boot/loader (it should be lurking somewhere in your /usr/obj tree as
> loader.sym), it would be interesting to see where it crashed (i.e.
> whats the closest symbol to the value of EIP above).
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Erm, Opps.... Im an idiot....
I went back over my steps and realised the I had forgotten to do a "make
distrib-dirs" and "make distribution"
Now it boots the kernel but I can not get it to mount the root filing
I have got a few more thinks to try before I throw my hands in the air,
but unfortunately that will not be until after the weekend (the BSD is
my main PC at work)
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