On 04/13/2013 06:01 PM, Stuart Henderson wrote:
On 2013/04/14 01:27, Stuart Henderson wrote:
On 2013/04/13 16:50, Raymond Lillard wrote:
I have 4 140GB drives and want to configure sd0 & sd1 as root-on-softraid
I have done this in the past with amd64 machines, but this is not working
for me on this machine.
This is only supported in certain bootloaders, I believe only amd64/i386 at
present.
Ah sorry I was confusing boot-from-softraid (which it looks like sparc64
can do) with root-on-softraid (which I still believe is just amd64/i386)..
I believe you have the cases reversed. Isn't what I trying to do
root-on-softraid?
I am booting from the "sd0a" partition which is a normal 4.2BSD type partition,
yet my root is on device sd4 (softraid) partition "a" (4.2BSD).
Getting back to this...
http://brycv.com/blog/2012/openbsd-sparc64-and-root-on-softraid/
The only difference between what he has done and what I am trying to
do is different machines, v120 vs v240 and four disks instead of two.
First problem is:
When I boot in step 3, all four disks appear in the roll call as expected
in dmesg, but when I try the command "disklabel sd3", rsd3 is not found.
Why ??? This seems like a bug to me.
The device nodes are normally created in the installer when needed,
I think this is to save inodes on the ramdisk.
1: I zero the first 10MB of all four disks with dd
2: I power cycle the box and boot form a cdrom snapshot from April 10
3: I use disklabel check that all disks have only C partitions
I'm not sure offhand where softraid metadata are stored to suggest
how much needs blanking, but obviously this must be further into the
disk than the partition table, you probably just need to go a bit
further with blanking. When I'm doing this I normally don't specify
a count and just hit ^C after a few seconds...not exactly scientific
but works for me.
Man page softraid(4) gives an example that indicates zero'ing the
first megabyte is sufficient.
