Device mount by label fails with mirrored logical volume or multipath device after device-name change in RHEL 5.6 or earlier

Solution Unverified - Updated 2011-10-07T15:12:14+00:00 -

Issue

When using mount by label on mirrored Logical Volumes, if the LVM metadata changes (in this case a vgrename, but many other permutations exist including volume creates/destroys) mount by label fails attempting to mount an LVM mirror leg instead of the mirror parent with the error:
```
mount: /dev/mapper/vg-lv_mimage_0 already already mounted or /mount/point busy
```

The device listed is one of the mirror legs, rather than the actual logical volume.

Mounting a filesystem via label fails when the device is a multipath map or contains more than one path to the same device

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