For what its worth it seems Red Hat ES 4 is unaffected. The test script works as expected on RHES4 with lvm2-2.02.06-6.0.RHEL4, kernel 2.6.9-42.EL.
-- LVM Snapshot removal causes intermittent kernel panic https://launchpad.net/bugs/71567 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs