8.16. Resizing a Logical Volume
One of the most powerful features of LVM is its ability to enlarge or reduce existing logical volumes, even if they contain a filesystem. Webmin, however, only supports the resizing of ext2, ext3, reiserfs and jfs filesystems at the moment—logical volumes formatted with other filesystem types (such as xfs) cannot be resized without losing data. You must also unmount a logical volume before resizing it, and then remount afterwards—there is no way to resize a filesystem that is currently in use.
As would be expected, a logical volume can only be enlarged by the amount of free space in its volume group. When shrinking a logical volume containing a supported filesystem, its size cannot be reduced to less than the space ...
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