soft partition mirroring error 3012 "necessary rounding"

i would like to mirror two disks.

so I following these instructions:

(<a href="http://sysunconfig.net/unixtips/soft-partitions.html" target="_blank">http://sysunconfig.net/unixtips/soft-partitions.html</a&g t;)

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Mirroring Soft Partitions

Once you have created soft partitions, what can you do with them? Well, one thing to do is to create mirrors out of them. Unfortunately, even though a soft partition is a metadevice, they cannot serve directly as a submirror. For example:

# metainit d10 -p c1t11d0s4 100m

d10: Soft Partition is setup

# metainit d20 -m d10

metainit: hostname: d10: invalid unit

Instead, you must first take the soft partition and create a simple concat/stripe out of it. For example:

# metainit d10 -p c1t0d0s0 100m

d10: Soft Partition is setup

# metainit d20 1 1 d10

d20: Concat/Stripe is setup

# metainit d30 -m d20

d30: Mirror is setup

# metainit d11 -p c2t0d0s0 100m

d11: Soft Partition is setup

# metainit d21 1 1 d11

d21: Concat/Stripe is setup

# metattach d30 d21

d30: submirror d21 is attached

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why does creating soft partition failed ?

regards ole

at 2007-7-5 17:54:13 >