RAID/Root Update

[Matthew Carpenter]

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If you expand the RAID disk, you manage two separate LVM systems and
then have to sync the md0, and have many of them (md1, md2, md3, md4)...

If you put LVs on md0, the RAID drive space is treated appropriately as
a physical drive.  You're basically offering up the md0 to the LVM gods
to do with as they please, or making the md0 simply raw drive space,
mirrored, leaving only one LVM system to maintain.  This is appropriate
IMO.  The abstraction of the md0 makes sense to put at the very base of
your drive handling.  With LVM on it, the md0 space doesn't need to
change much to be retasked/reapportioned.  Plus, this is how the article
reads.   ;p

A. Khattri wrote:
| On Wed, 9 Feb 2005, David Bandel wrote:
|
|
|>sure you're not going about that backwards?  Shouldn't you do LVM
|>_then_ create the MD devices on top?  Seems if you create LVM on top
|>of RAID you'd loose the ability to expand the raid disks.
|
|
| Isn't that the whole point of using LVM?
|
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- --
Matthew Carpenter
matt at eisgr.com                          http://www.eisgr.com/

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