F10: something broken with lvm

[Gerry Reno]

We just upgraded a number of machines to F10 and after a few weeks I've 
noticed something wrong with lvm.  Some of our inhouse scripts are 
breaking that deal with lvm.  When I look at /etc/fstab and mount I see 
entries what used to look like:
/dev/VolGroup00/LogVol01 /                      ext3    defaults        1 1
getting changed to this:
/dev/dm-3   /                     ext3   defaults      1 1



Where does this '/dev/dm-3' device come from?  I don't find it 
referenced in any of the lvm tool outputs.  Whatever caused this change 
to happen please revert this back to just listing lv's in normal lvm 
parlance please.  These mysterious changes are breaking things and are a 
complete nuisance.  How do we go about undoing these changes and how do 
we prevent this from happening again?


Regards,
Gerry