meanwhile, creating snapshots without the "-pr" option (read/write) seems to still work.
lvcreate --snapshot --size 1G --name test-snap /dev/NVM/test but this does not: # lvcreate -pr --snapshot --size 1G --name test-snap /dev/NVM/test NVM-test-real: Name: NVM-test-real which vanishes only after the original volume (NVM/test) is removed, or after a reboot. Roman
