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disksup(3erl)			     Erlang Module Definition			    disksup(3erl)

NAME
       disksup - A Disk Supervisor Process

DESCRIPTION
       disksup	is  a process which supervises the available disk space in the system. It is part
       of the OS_Mon application, see os_mon(7) . Available for Unix and Windows.

       Periodically checks the disks. For each disk or partition which uses more than  a  certain
       amount of the available space, the alarm {{disk_almost_full, MountedOn}, []} is set.

	 On Unix :
	   All (locally) mounted disks are checked, including the swap disk if it is present.

	 On WIN32 :
	   All logical drives of type "FIXED_DISK" are checked.

       Alarms  are reported to the SASL alarm handler, see alarm_handler(3erl) . To set an alarm,
       alarm_handler:set_alarm(Alarm) is called where Alarm is the alarm specified above.

       The alarms are cleared automatically when the alarm cause is no longer valid.

CONFIGURATION
       The following configuration parameters can be used to change the default values	for  time
       interval and threshold:

	 disk_space_check_interval = int()>0 :
	   The	time  interval,  in minutes, for the periodic disk space check. The default is 30
	   minutes.

	 disk_almost_full_threshold = float() :
	   The threshold, as percentage of total disk space, for how much disk	can  be  utilized
	   before the disk_almost_full alarm is set. The default is 0.80 (80%).

       See config(5) for information about how to change the value of configuration parameters.

EXPORTS
       get_disk_data() -> [DiskData]

	      Types  DiskData = {Id, KByte, Capacity}
		     Id = string()
		     KByte = int()
		     Capacity = int()

	      Returns  the  result  of	the latest disk check. Id is a string that identifies the
	      disk or partition. KByte is the total size of the  disk  or  partition  in  kbytes.
	      Capacity is the percentage of disk space used.

	      The function is asynchronous in the sense that it does not invoke a disk check, but
	      returns the latest available value.

	      Returns [{"none",0,0}] if disksup is not available.

       get_check_interval() -> MS

	      Types  MS = int()

	      Returns the time interval, in milliseconds, for the periodic disk space check.

       set_check_interval(Minutes) -> ok

	      Types  Minutes = int()>=1

	      Changes the time interval, given in minutes, for the periodic disk space check.

	      The change will take effect after the next disk space  check  and  is  non-persist.
	      That  is,  in  case  of  a process restart, this value is forgotten and the default
	      value will be used. See Configuration above.

       get_almost_full_threshold() -> Percent

	      Types  Percent = int()

	      Returns the threshold, in percent, for disk space utilization.

       set_almost_full_threshold(Float) -> ok

	      Types  Float = float(), 0=<Float=<1

	      Changes the threshold, given as a float, for disk space utilization.

	      The change will take effect during the next disk space check  and  is  non-persist.
	      That  is,  in  case  of  a process restart, this value is forgotten and the default
	      value will be used. See Configuration above.

SEE ALSO
       alarm_handler(3erl) , os_mon(3erl)

Ericsson AB				   os_mon 2.2.5 			    disksup(3erl)
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