VERITAS File System 3.5 (HP OnlineJFS/JFS 3.5) Administrator's Guide (August 2003)

Appendix A
VERITAS File System Quick Reference
Resizing a File System
85
How to Reorganize a File System
You can reorganize (or compact) a fragmented file system using fsadm, even while the file system is mounted.
This may help shrink a file system that could not previously be decreased.
NOTE If a file system is full or busy, the reorg operation may fail.
To reorganize a VxFS file system, use the syntax:
fsadm [-F vxfs] [-e] [-d] [-E] [-D] [-r rawdev ] mount_point
Example
To reorganize the VxFS file system mounted at /ext, enter:
# fsadm -F vxfs -EeDd /ext
vxfs The file system type
-d Reorders directory entries to put subdirectory entries first,
then all other entries in decreasing order of time of last access.
Also compacts directories to remove free space.
-D Reports on directory fragmentation.
-e Minimizes file system fragmentation. Files are reorganized to
have the minimum number of extents.
-E Reports on extent fragmentation.
mount_point The file system’s mount point.
-r rawdev Specifies the path name of the raw device if there is no entry in
/etc/fstab and fsadm cannot determine the raw device.