z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

df
Options
Space Free
Total amount of space available in file system for the creation of new files
by unprivileged users.
Space Reserved
Space reserved by the system which is not normally available to a user.
Total Space
Includes space used, space free, and space reserved.
df measures space in units of 512-byte disk sectors. You can specify a particular
file system by naming any filename on that file system. If you do not give an
argument, df reports space for all mounted file systems known to the system, in the
following format:
v File system root
v File system name
v Space available and total space
The total space reported is the space in the already allocated extents (primary
and any already allocated secondary extents) of the data set that holds this file
system. Therefore, the total space may increase as new extents are allocated.
v Number of free files (inodes).
This number is only meaningful for file systems created using DFSMS 1.3.0 and
later. For file systems created with earlier versions of DFSMS, this number will
always be 4 294 967 295.
v File system status
Tips: For zFS file systems, the df command might not provide sufficient information
to indicate whether a file system is running out of space. For complete information
about zFS space usage, use the zfsadm aggrinfo -long command. See z/OS
Distributed File Service System z File System Administration for more information.
–k Uses 1024-byte (1KB) units instead of the default 512-byte units when
reporting space information.
–P Lists complete information on space used, in the following order:
v File system name
v Total space
v Space used
v Space free
v Percentage of space used
v File system root
–S Display SMF accounting fields.
–t Display total allocated file slots, in addition to the total number of free files
that are already displayed.
–v Lists more detailed information on the file system status.
v File system root
v File system name
v Space available and total space
v Number of free files (inodes)
v File system status
v File system type, mode bits and device number
v File system mount parm data
234 z/OS V1R9.0 UNIX System Services Command Reference