DPAV_CHK_ALI

Querying existing alias devices and their I/O activity

DPAV_CHK_ALI? lists existing alias devices and displays their I/O activity (average I/Os per second). The I/O activity relates only to the home system. In VM mode, additional I/Os could be active on other guest systems.

DPAV_CHK_ALI?                                                                                                                                     

DPAV_CHK_ALI?mask

 

mask	Complete or masked specification of a mnemonic device name. The following specifications are possible:
	*	All alias devices are listed.
	n*	All alias devices whose names begin with n are listed.
	nm*	All alias devices whose names begin with nm are listed.
	nml*	All alias devices whose names begin with nml are listed.
	nmlo	The alias device with the name nmlo is listed.

Example

 UNIT NAME  | FREQUENCY % 
-----------+------------
3803       |     100
 

Querying existing alias devices and their I/O activity

Check to see whether alias devices exist on controller 3800:

DPAV_CHK_ALI?38*

Output:

 UNIT NAME  | I/O PER SEC 
-----------+------------
380A       |        0
380B       |        0
380C       |        0
380D       |        0
380E       |        0
380F       |        0
3804       |        0
3805       |        0
3806       |        0
3807       |     2569
3808       |        0
3809       |        0 

2569 I/Os per second are active on alias device 3807; the remaining alias devices show no I/O activity on the home system.

 

 UNIT NAME  | FREQUENCY % 
-----------+------------
           |