BTX errors on Intel SR1200 following gvinum ?crash

[David Adam]

It looks like the problems I experienced below were due to creating a 
vinum volume starting at offset 0, instead of offset 16, thus overwriting 
the bootloader. I realise this is documented - apologies for the noise.

Thanks,

David Adam
zanchey at ucc.gu.uwa.edu.au

On Tue, 1 Jul 2008, David Adam wrote:
> I have a reasonably old (P3-class) Intel SR1200 which has three SCSI 
> drives installed. I've installed FreeBSD 7.0-RELEASE over NFS onto the 
> first drive.
> 
> While configuring gvinum, I issued the following commands:
> 
> ---
> blade# gvinum
> gvinum -> list
> 1 drive:
> D r0                    State: down     /dev/da0s1b     A: 32677/32677 MB 
> (100%)
> 
> 0 volumes:
> 
> 0 plexes:
> 
> 0 subdisks:
> gvinum -> rm r0
> ---
> 
> At this point, my SSH session to the machine stopped responding and 
> eventually timed out. I presume it rebooted; I didn't get to the console
> in time, and this was all that was displayed:
> 
> int=00000006 err=00000000 efl=00010246 eip=0000275c
> eax=00091300 ebx=00000000 ecx=00000000 edx=00000000
> esi=00000004 edi=00003dd4 ebp=00000000 esp=000903fc
> cs=002b  ds=0033  es=0033  fs=0033  gs=0033 ss=0033
> cs:eip=f0 49 08 28 00 82 07 28-00 00 00 00 00 00 00
>        00 00 00 00 00 00 00 00-00 00 00 00 00 00 00
> ss:esp=29 20 00 00 00 00 00 00-00 00 00 00 00 00 00
>        00 00 00 00 00 00 00 00-00 00 00 00 00 00 00
> BTX halted
> 
> This error persists on reboot. I have tried using sysinstall to rewrite 
> the MBR (with /boot/mbr-style booting).
> 
> The partition table looks like this:
> ---
> blade# bsdlabel da0s1
> # /dev/da0s1:
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   a:  4194304 66924544    4.2BSD        0     0     0
>   b: 66924544        0     vinum
>   c: 71119692        0    unused        0     0         # "raw" part, don't edit
> ---
> 
> Some web searching of the various values has turned up no information 
> that I can understand; where should I go from here?
> 
> The FreeBSD installer disc1 boots ok on this machine, as did the 
> 7.0-RELEASE install until the gvinum crash. Getting a dmesg out of the 
> machine is proving to be a little challenging but if required I will 
> provide this tomorrow.
> 
> Please keep me in the reply chain; I am not subscribed to -questions.
> 
> Thanks,
> 
> David Adam
> zanchey at ucc.gu.uwa.edu.au