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df_vxfs(1m) [hpux man page]

df_vxfs(1M)															       df_vxfs(1M)

NAME

       df_vxfs: df - report number of free disk blocks on a VxFS file system

SYNOPSIS

       [special|directory]...

DESCRIPTION

       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 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 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 is a special device name, the file system can be an unmounted or mounted file system  (for  example,  If  you	specify  a
       directoryname, 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.

   Options
       recognizes the following options:

	      Report only the number of kilobytes free.

	      Report the number of files free.

	      Report only an actual count of the blocks in the free list
			     (free inodes are not reported).  When this option is specified, reports on raw devices.

	      Specify the file system type

	      Report the entire
			     statvfs(2) structure.

	      Report the total number of inodes, the number of free inodes, number of used inodes
			     and the percentage of inodes in use.

	      Report the allocation in kilobytes.

	      Report on local file systems only.

	      Report the file system name.  If invoked with no other options this
			     option prints a list of mounted file system types.

	      Print the number of free extents of each size.
			     Free extents are always an integral power of two in length, ranging from a minimum of one block to the maximum extent
			     size supported by the file system.

	      Report the total allocated block figures and the number of free blocks.

	      Report the percentage of blocks used, the number of blocks used and the number
			     of blocks free. This option cannot be used with other options.

	      Echo the completed command line, but performs no other action.
			     The  command  line  is  generated by incorporating the user-specified options and other information derived from This
			     option allows the user to verify the command line.

       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).

   Operands
       recognizes the following operands:

	      directory      Name of the mount point from which the VxFS file system is accessed.

	      special	     Device name, which contains a mounted or unmounted VxFS file system.

EXAMPLES

       Report the number of free disk blocks for all mounted file systems:

       Report the number of free extents of each size, for all mounted VxFS file systems:

       Report the number of free files for all mounted VxFS file systems:

       Report the total allocated block figures and the number of free blocks, for all mounted file systems:

       Report the total allocated block figures and the number of free blocks, for the file system mounted as

FILES

       File-system devices.
       File-system devices.
       Static information about the file systems.
       mounted-file-system table.

SEE ALSO

       du(1), df(1M), fsck_vxfs(1M), statvfs(2), fs_vxfs(4), mnttab(4).

STANDARDS CONFORMANCE

       : SVID2, XPG2, XPG3

																       df_vxfs(1M)

Check Out this Related Man Page

fscat_vxfs(1M)															    fscat_vxfs(1M)

NAME

       fscat_vxfs: fscat - cat a VxFS file system

SYNOPSIS

       output-file] offset] length] block_size] special

DESCRIPTION

       provides an interface to a VxFS snapshot file system, similar to that provided by invoked on the block or character special file of regular
       VxFS file systems.  works when executed on the special device of any VxFS file system.

       On most VxFS file systems, the block or character special file for the file system provides access to a raw image of  the  file	system	to
       back  up  the  file system to tape.  On a snapshot file system, access to the corresponding block or character special file provides little
       useful information.  provides a stream of bytes representing the file system snapshot.  This datastream is written by default  to  standard
       output,	although  the  output-file  option can be used to specify another destination.	The datastream on standard output can be processed
       several ways, such as in a pipeline, or written to a tape.

       By default, the output is a stream of bytes that starts at the beginning of the file system and continues to the last byte.  On a  snapshot
       file  system, data is read from the file system using special ioctls on the mount point.  On other VxFS file systems, data is read from the
       specified special file.	Unless otherwise specified, data is written to standard output.

       All numbers entered as option arguments can have as a prefix to indicate octal, or as a prefix  to  indicate  hexadecimal.   A  or  can	be
       appended  to  indicate  the  value  is  in  512-byte  blocks, a or to indicate the value is in kilobytes, an or to indicate the value is in
       megabytes, or a or to indicate the value is in gigabytes.  An appended letter can be separated from the number by a space,  in  which  case
       the letter and number should be enclosed in a set of quotes. For example:

       All numbers entered as options must be in multiples of 512 bytes.  For example, a value of 5713 as an offset is rejected.

   Options
       recognizes the following options:

       Specify the output block size, in bytes.
		      block_size must be less than or equal to 1 megabyte.

       Specify the VxFS file system type.

       Specify an output file in which to write the datastream.

       Specify the transfer length, in bytes.
		      A length of includes the remainder of the file system after the specified offset.

       Specify the starting offset in bytes.

   Operands
       recognizes the following operand:

	      special	     Name of the special device from which the VxFS file system is accessed.

   Notes
       Snapshot file systems are only available with the HP OnLineJFS product.

       A snapshot file system cannot be written to.

       A snapshot file system exists only as long as it is mounted; once unmounted, the special file no longer contains a snapshot file system.

       When  is  run  on a mounted VxFS snapshot, the content of free blocks (that is, blocks not allocated to any file or metadata) is undefined.
       The content of free blocks can change after additional data is written to the primary file system, but blocks associated with files  always
       display the content they had when the snapshot was created.

       does not work with Storage Checkpoints.

SEE ALSO

       dd(1), fs_vxfs(4), vxfsio(7).

																    fscat_vxfs(1M)
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