tunefstab(4)						     Kernel Interfaces Manual						      tunefstab(4)

NAME

       tunefstab - VxFS file system tuning parameters table

DESCRIPTION

       The  file contains tuning parameters for VxFS file systems.  sets the tuning parameters for mounted file systems by processing command line
       options or by reading parameters in the file.

       Each entry in is a line of fields in one of the following formats:

	      block-device	     tunefs-options
	      system-default	     tunefs-options

       block-device is the name of the device on which the file system is mounted.  If there is more than one line that specifies  options  for  a
       device, each line is processed and the options are set in order.

       In  place  of block-device, system-default specifies tunables for each device to process.  If there is an entry for both a block-device and
       system-default, the system-default value takes precedence.

       Lines in that start with the pound (#) character are treated as comments and ignored.

       The tunefs-options correspond to the tunable parameters that and set on the file system.  Each option in this list is  a  name=value  pair.
       Separate the options by commas, with no spaces or tabs between the options and commas.

       See the vxtunefs(1M) manual page for a description of the supported options.

EXAMPLES

       If  you	have a four column striped volume, with a stripe unit size of 128 kilobytes per disk, set the and parameters 128 and four, respec-
       tively.	You can do this in two ways:

       or:

       To set the discovered direct I/O size lower so that it is always lower than the default, add the following line to the file:

FILES

       Default			     file.

SEE ALSO

       mkfs_vxfs(1M), mount(1M), vxtunefs(1M).

																      tunefstab(4)