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HP-UX Reference > Ddf_vxfs(1M)HP-UX 11i Version 2: December 2007 Update |
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NAMEdf_vxfs: df — report number of free disk blocks on a VxFS file system DESCRIPTIONdf prints the number of free blocks and free inodes in VxFS file systems or directories based on the counts kept in the super-blocks. VxFS dynamically allocates inodes from a pool of free blocks. The number of free inodes and blocks reported by df is an estimate based on the number of free 8K or larger extents and the current ratio of allocated inodes to allocated blocks. (Extents smaller than 8K may not be usable for all types of allocation, so df does not count free blocks in extents smaller than 8K.) Allocating additional blocks may therefore decrease the count of free inodes and vice versa. If the operand to df is a special device name, the file system can be an unmounted or mounted file system (for example, /dev/dsk/c0t1d0). If you specify a directoryname, df displays information for the file system at that mount point. If neither special nor directory is specified, the free space on all of the mounted file systems is printed. Optionsdf recognizes the following options:
There are a number of options that specify output formats, some combinations of which are incompatible. If an incompatible combination is specified, one of the options will override the other(s). EXAMPLESReport the number of free disk blocks for all mounted file systems: df Report the number of free extents of each size, for all mounted VxFS file systems: df -F vxfs -o s Report the number of free files for all mounted VxFS file systems: df -F vxfs -e Report the total allocated block figures and the number of free blocks, for all mounted file systems: df -t Report the total allocated block figures and the number of free blocks, for the file system mounted as /usr:
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