"Steal" Space From Another Filesystem

"Steal" Space From Another Filesystem

To move disk space from one filesystem on a disk to another filesystem on the same disk, you must back up your existing data on both filesystems, run the fx command to repartition the disk, then remake both filesystems with the mkfs command. This method has serious drawbacks. It is a great deal of work and has certain risks. For example, to increase the size of a filesystem, you must remove space from other filesystems. You must be sure that when you are finished changing the size of your filesystems, your old data still fits on all the new, smaller filesystems. Also, resizing your filesystems may at best be a stop-gap measure until you can acquire additional disk space.

Repartitioning is documented in "Repartitioning a Disk With fx" in Chapter 2. For additional solutions when the filesystem is the Root filesystem, see "Running Out of Space in the Root Filesystem" in Chapter 5.