On Fri, 28 Jul 2006, Kreiter, Chuck wrote:
> The problem was the lack of a partition on the drive.  I manually
> partitioned each one and was able to create the LVM.

Please specify,  Chuck,  if you were using  /dev/dasdx1  or tried
just the  /dev/dasdx  form of the device name.  The latter should work
withOUT requiring a partition table.   It will,  however,  require
that the disk be blocked.  Format each disk from CMS to get the
4K blocks you'll need.

Of course,  if you use the  "1"  device filename,
then you're talking about  "partition one"  for which you
will need a partition table.

Now ... if you need an IBM label,  then you have to use either
LDL or CDL.  Non-partitioned disks will usually wipe out an IBM label
as many of the filesystems get too close to the start of their space
(partitioned or not).  So when they're in a non-partitioned volume,
they step-on your IBM labels.

If z/VM is in the mix,  then you may very well not need IBM labels
on the disks,  since your Linux disks often will not start at
physical cylinder zero.  And if you don't need IBM labels,
then you don't need a partition table unless there are
other reasons for having Linux slice-up the disks.

-- R;

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