Veritas Storage Foundation 5.1 SP1 Advanced Features Administrator"s Guide (5900-1503, April 2011)

# mkfs -F vxfs -o version=8 /dev/vx/rdsk/dg/vol3
version 8 layout
104857600 sectors, 52428800 blocks of size 1024, log size 65536 blocks
rcq size 4096 blocks
largefiles supported
# mount -F vxfs /dev/vx/dsk/dg/vol3 /mnt
# df -k /mnt
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/vx/dsk/dg1/vol3 52428800 83590 49073642 1% /mnt
# /opt/VRTS/bin/fsadm -S shared /mnt
Mountpoint Size(KB) Available(KB) Used(KB) Logical_Size(KB) Shared
/mnt 52428800 49073642 83590 83590 0%
# du -sk /mnt
0 /mnt
# dd if=/dev/zero of=/mnt/foo bs=1024 count=10
10+0 records in
10+0 records out
10240 bytes (10 kB) copied, 0.018901 seconds, 542 kB/s
# vxfilesnap /mnt/foo /mnt/foo.snap
# df -k /mnt
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/vx/dsk/dg1/vol3 52428800 83600 49073632 1% /mnt
# /opt/VRTS/bin/fsadm -S shared /mnt
Mountpoint Size(KB) Available(KB) Used(KB) Logical_Size(KB) Shared
/mnt 52428800 49073632 83600 83610 0%
# du -sk /mnt
20 /mnt
Administering FileSnaps
Comparison of the logical size output of the fsadm -S shared, du, and df commands
300