some simple nfs-benchmarks on 5.4 RC2

[Claus Guttesen]

> You could use the atabeast to do two raid 5's, then use vinum to stripe those two.

I actually thought of that a while ago (unrelated to this). I read the
vinum-page in the handbook, assume this is still valid. I recall a
discussion regarding it's (re)naming to gvinum, but don't see any
mention of it so gvinum is no longer used I guess.

Are there any performance-issues doing striping by FreeBSD. I actually
have two unused LUN's, each with two 2 TB volumes, so I can stripe the
first volume in the first LUN with the first volume in the second LUN
and the second volume etc. so I distribute the load on as many disks
as possible.

As far as I know a vinum-volume don't have the same 2 TB
sizelimitation as disklabel and newfs has, but will I be able to
newfs? The handbook refers to newfs -v when making a new fs, but I
can't find -v in man newfs, man 8 vinum says:

Just run newfs(8).  Use the -v option to state that the device is not
divided into partitions...

The example uses the -U (enable softupdates) parameter instead:

# newfs -U /dev/vinum/mirror

regards
Claus