Just to finish documenting the recovery from the corruption:
I was able to fully restore the root logvol and then I rebooted the
system. The system came up fine without having to make any special
adjustments to LVM metadata. It figured it out. The only thing I
noticed was a blizzard of SELinux avc denials. So I ran a relabel and
that seemed to cure those. I did a 'cat /etc/lvm/backup/VolGroup00' and
took a look at what was in there. It was in the state that included the
snapshot0 and my snapshot logvol. I then did a vgdisplay -v and LVM
rewrote the meta backup and when I checked it again the snapshot0 and my
snapshot were gone. So the system appears to be recovered and working
again.
Gerry
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