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
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Resizing a File System
You can extend or shrink mounted VxFS file systems using the fsadm command. Use the extendfs command
to extend the size of an unmounted file system. A file system using the Version 4 disk layout can be up to two
terabytes in size. A file system using the Version 5 disk layout can be up to 32 terabytes in size. The size to which a
Version 5disk layout filesystem can beincreased depends on thefile system blocksize. See the following manual
pages for more information about resizing file systems:
extendfs (1M)
fsadm_vxfs (1M)
How to Extend a File System Using fsadm
If a VxFS file system is not large enough, you can increase its size. The size of the file system is specified in
units of 1024-byte blocks (or sectors).
NOTE If a file system is full, busy, or too fragmented, the resize operation may fail.
To extend a VxFS file system, use the syntax:
fsadm [-F vxfs] [-b newsize ] [-r rawdev ] mount_point
If a file system is full, busy, or too fragmented, the resize operation may fail.
NOTE The device must have enough space to contain the larger file system. See the format (1M)
manual page or the VERITAS Volume Manager Administrator’s Guide for more information.
Example
To extend the VxFS file system mounted on /ext to 22528 sectors, enter:
# fsadm -F vxfs -b 22528 /ext
vxfs The file system type.
newsize The size (in sectors) to which the file system will increase.
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.