... create the logical volumes within them:# lvcreate name medialv size 400G# lvcreate name backuplv size 50G# lvcreate name sharelv size 10GWithout LVM, you might allocate all available disk ... LVM user tools are part of the lvm2 package. Note that you may see tools for LVM-1 as well (perhaps named lvm-user). It doesn't hurt to have both installed, but make sure you have the LVM-2 ... volumes, use the lvdisplay command.Now you have several nicely named logical volumes at your disposal:/dev/datavg/backuplv (also /dev/mapper/datavg-backuplv)/dev/datavg/medialv (also /dev/mapper/datavg-medialv)/dev/datavg/sharelv...