How do you unmount logical volume?
To remove an inactive logical volume, use the lvremove command. If the logical volume is currently mounted, unmount the volume before removing it. In addition, in a clustered environment you must deactivate a logical volume before it can be removed.
How do I remove physical volume in Linux?
Use “vgreduce” command to remove the physical volume from the Volume group. Now your physical volume has been removed from the existing volume group.
What does unmount the selected volume mean?
Unmounting a disk makes it inaccessible by the computer. In Mac OS X, select the disk on the desktop and either drag the disk to the trash (which changes to an Eject icon), or select “File→Eject” from the Finder’s menu bar. Once a removable disk has been unmounted, it can safely be disconnected from the computer.
How to unmount logical volume with active LVM?
(In some cases useful info about processes that use the device is found by lsof (8) or fuser (1)) You probably can’t properly do it.. umount -l /opt will probably let you unmount /opt without also /opt/mongo, but that will mess up the /opt/mongo mount rather than leave it alone.
How can I reduce the size of my LVM partition?
Warning about the currently most voted answer : To NOT destroy your fresh default installation with LVM option (14.04 Trusty Tahr), 1) read the whole page, 2) delete swap 3) and probably modify the command for “Reduce the size of the logical volume” like this: I strongly recommend system-config-lvm.
How to shrink logical volumes in Ubuntu LVM?
See How to shrink Ubuntu LVM logical and physical volumes? for help on that situation. You can shrink/extend a logical volume very easily with a GUI tool: system-config-lvm. Because system-config-lvm does not come pre-installed, once booted from a live-cd, you have to install it:
Which is version of GParted supports resizing LVM physical volumes?
Only the latest version of Gparted (0.14) supports resizing LVM physical volumes. The version that ships with Ubuntu 12.10 or 13.04 does not support it. If the volume group associated with the LVM physical volume does not have enough unallocated space, you’ll need to make some by shrinking a logical volume.