For testing purposes I've tried to extend my logical volume by attaching one more Physical Volume (USB drive). Making the USB drive part from the logical volume with the following steps:
- Created partition from the device
- Created Physical Volume from the new partition
- Attached the Physical Volume to the already configured Volume Group
- And finally extending the Logical Volume
My question is how to unmount and remove the USB drive without losing any data on the already existing Logical Volume?