I can see that a single Logical volume can be mounted on two different file systems -- now can someone explain to me the pros and cons of this? Why doesn't Linux throw up error when this happens?
Ex:
/dev/mapper/vgEP0-lvol12
9.9G 9.2G 243M 98% /LSMW
/dev/mapper/vgEP0-lvol12
9.9G 9.2G 243M 98% /oracle/EP0/oraflash
In Linux a device can be mounted multiple times.
From mount(2) man page
Since Linux 2.4 a single file system can be visible at multiple mount
points, and multiple mounts can be stacked on the same mount point.