> BTW, to save time, I really want more than 8 partitions
> because: I want to export them separately, I want each

isn't quota a simpler solution. and dump with incremental backup.

anyway it's still 8 partition problem.

> partition to fit on a single DLT tape, and I want to
> limit the amount of space allowed to the functions I've
> assigned to specific partitions.
>
> I realize I could use two raid devices (8 partitions
> apiece) but I just spent a bit of time writing a set
> of scripts to do stuff like monitor the system for a
> failure and auto-switch to a hot spare as well as
> simplifying bad drive replacement and I'd rather not
> re-do them to deal with two raid devices on the same
> set of hard drives.
>
> So, is this a real limitation or am I missing
> something obvious?

on my system MAKEDEV raid0 did:
brw-r-----  1 root  operator  18,      0 May 31 09:00 raid0a
brw-r-----  1 root  operator  18,      1 May 31 09:00 raid0b
brw-r-----  1 root  operator  18,      2 May 31 09:00 raid0c
brw-r-----  1 root  operator  18,      3 May 31 09:00 raid0d
brw-r-----  1 root  operator  18,      4 May 31 09:00 raid0e
brw-r-----  1 root  operator  18,      5 May 31 09:00 raid0f
brw-r-----  1 root  operator  18,      6 May 31 09:00 raid0g
brw-r-----  1 root  operator  18,      7 May 31 09:00 raid0h
brw-r-----  1 root  operator  18, 524288 May 31 09:00 raid0i
brw-r-----  1 root  operator  18, 524289 May 31 09:00 raid0j
brw-r-----  1 root  operator  18, 524290 May 31 09:00 raid0k
brw-r-----  1 root  operator  18, 524291 May 31 09:00 raid0l
brw-r-----  1 root  operator  18, 524292 May 31 09:00 raid0m
brw-r-----  1 root  operator  18, 524293 May 31 09:00 raid0n
brw-r-----  1 root  operator  18, 524294 May 31 09:00 raid0o
brw-r-----  1 root  operator  18, 524295 May 31 09:00 raid0p

it is possible you must rerun
./MAKEDEV raid0