LVM on top of software RAID?

[Jason L Tibbitts III <tibbs math uh edu>]

I'm trying to kickstart some machines using LVM on top of software
RAID volumes, but anaconda is crashing in various ways and I'm
wondering whether or not it's even possible.

Here's the relevant portion of my kickstart file; sda and sdb are
1.1TB apiece and are separate 3ware RAID arrays that I'm trying to
stripe across.  I guess the issue is whether you can do "raid pv.0"
and then "volgroup blah pv.0", since "raid" is documented as taking a
mount point and LVM is not mentioned in that context.

part /boot --size 128 --ondisk=sda
part /boot2 --size 128 --ondisk=sdb
part swap --size 2048 --ondisk=sda
part swap --size 2048 --ondisk=sdb
 
part raid.00 --size=1000000 --ondisk=sda
part raid.01 --size=1000000 --ondisk=sdb
 
part raid.10 --size=1 --grow --ondisk=sda
part raid.11 --size=1 --grow --ondisk=sdb
 
raid pv.0 --level=0 --device=md0 raid.00 raid.01
raid pv.1 --level=0 --device=md1 raid.10 raid.11
 
volgroup nas pv.0
volgroup sys pv.1
 
logvol /      --vgname=sys --name=root  --size=1024
logvol /usr   --vgname=sys --name=usr   --size=4096
logvol /var   --vgname=sys --name=var   --size=4096
logvol /tmp   --vgname=sys --name=tmp   --size=8192
logvol /cache --vgname=sys --name=cache --size=4069

Also, is there any way to specify the PS size when creating a volume
group?  I know you can do it when setting things up manually.

 - J<