tunefstab man page on HP-UX

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tunefstab(4)							  tunefstab(4)

       tunefstab - VxFS file system tuning parameters table

       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 com‐
       ments 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. Sepa‐
       rate 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

       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:


       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:

       Default			     file.

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


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