Root concatenation and raid1

From: wheakory@isu.edu
Date: Sun Jul 09 2006 - 20:07:35 EDT


Here's my question if possible. I have a disk (on a Sun v440) that has
a layout of
/ 8gb
/var 54gb
swap 4gb

Now I have 3 other disks that are not being used that are the same size
as the one being used.

I want to concatenate 1 disk with the same existing partitions so thatit
would double the space which I can use "prtvtoc" to accomplish the same
disk layout. The new file systems would then be doubled as below:
 / 16 gb
/var 108 gb
swap 8gb
 
Then I want to concatenate the other two disks with the identical layout
has the active disks and use these as a mirror to the active disks. Can
this be done? I hope I'm making sense. I didn't know if you can
concatenate root if its a mounted partition without going into single
user mode.

Here's what I did so far

# metadb -a -f -c3 c1t0d0s7 c1t1d0s7 c1t2d0s7 c1t3d0s7

# metainit -f d1 1 2 /dev/dsk/c1t0d0s0 /dev/dsk/c1t1d0s0
d1: Concat/Stripe is setup

# metainit -f d2 1 2 /dev/dsk/c1t2d0s0 /dev/dsk/c1t3d0s0
d2: Concat/Stripe is setup

# metainit d0 -m d1
d0: Mirror is setup

# metaroot d0
metaroot: Stripe d1 has more than 1 slice

What does it mean by "d1 has more than 1 slice"?

--
Kory Wheatley
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