num sector(s) in last cylinder group unallocated

Hi Sunmanagers,

Environment:

Sun Sparc Solaris 8 Generic_108528-29 on an E250
Infortrend EonStor 1.4TB RAID 5, U320 SCSI host connection

When I go to "newfs" the filesystems, I'm getting

Warning: num sector(s) in last cylinder group unallocated

As with my other question: I've searched and searched, and can find
nothing more than what "man mkfs_ufs" offers, by way of explanation:

User parameters and disk geometry conflict; some
disk space is lost. A possible cause is the speci-
fied size being smaller than the partition size.

"format" insisted my slice allocations be an even multiple of some
rather large-ish number. (Over 3000, IIRC.) It would *seem* mkfs_ufs
needs them to be a different multiple. I imagine there is some magic
size, that is a multiple of both (least common denominator kind of a
thing?). The question is: How do you figure out what mkfs_ufs wants?

The numbers aren't huge, a couple sectors in one filesystem, a dozen or
14 in another, but it'd be nice to know the answer.

TIA,
Jim
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