A couple of things...
Novell NSS volumes require that EVMS (the Enterprise Volume Management
System - similar to LVM in concept, but much different from a design
standpoint) be used to manage the entire disk - so LVM really isn't an
option.
I believe you are going about the process backwards Brian. You'll need
to configure the disk to use EVMS, and then use the EVMS MD region
plug-ins to configure RAID.
The key here is that EVMS needs to manage the physical volumes - it
actually expects to manage the *entire* physical volume(s).
I haven't actually gone through this process myself - setting up RAID
under EVMS - but I do know it's a supported function, and I've done lots
of other nifty things with EVMS.
If I have time early next year I can try to play around with it and
maybe give you some more feedback - it would be useful for me to be more
familiar with anyways.
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Chander Ganesan
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Pat Regan wrote:
Ken Mink wrote:
It took me a bit to work out exactly how. Before removing one of the md
physical volumes, who'd have to pvmove all the physical extents to the new
physical volume(the new md device). Once all the PEs were moved to the new
larger volumes, who'd be free lvextend to use more space.
You are correct, you would have to use pvmove to clear out the original
md devices before removing them. I didn't think to mention that :(.
This would work. For the largest md device size there must be that much free
on the disks.
Somebody probably knows a better strategy than just slicing it up into
equal size pieces. You can probably somehow take advantage of the fact
that the new md devices will always be a bigger than the old ones :).
Pat
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