Uses fsadm command.

  • fsadm -F vxfs -D /dirname - reports directory fragmentation
  • fsadm -F vxfs -E /dirname - reports extents fragmentation

Extending a mounted File System

 1. Use lvextend to extend the logical volume
 2. fsadm -F vxfs -b number /mountpoint
    where number is the number of Megabytes x 1024. e.g. to increase a
    filesystem to 100Mb , the number will be 102400 .

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