[Bacula-devel] Linux LVM aware getdiskinfo

[Frank S. <fe...@us...>]

After a few hours of hacking and one LVM bug, I've created a version of
getdiskinfo that is capable of generating restore scripts to recreate an LVM
configuration.  This version will create several additional scripts:

create-pv
	This will run pvcreate on any partitions that were a PV in an existing
	volume group.

create-vg
	This will recreate the volume groups with the same PV collection and
	extent size.

create-lv
	This will recreate the logical volumes.

format.<volume group>
	This will mk{swap,e2fs,jfs} each logical volume.

This worked against the handfull of systems I was able to test on, but there
are at least two caveats:

 - I was only able to test on LVM2, not any LVM1 systems

 - Any recursive LVM stuff (ie, using an LV as a PV) will almost certainly fail

Most of our servers use LVM heavily, so this is an important feature for us.
Fedora Core (and presumably RedHat) also default to using LVM, so I'm sure
we're not the only ones who could benefit.

Please let me know of any problems or potential enhancements you see to my
changes.

If this works well for everyone, any chance it could be included in some future
version of bacula-rescue?

-- 
Frank Sweetser fs at wpi.edu  |  For every problem, there is a solution that
WPI Network Engineer          |  is simple, elegant, and wrong. - HL Mencken
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