1 02/12/85  add_vol, av
 2 
 3 Syntax as a command:  av pv_name drive_name
 4 
 5 
 6 Function:  tells the system that a physical volume is on a disk drive.
 7 The system then reads and checks the volume label.  This command can be
 8 used in ring 1 or ring 4.
 9 
10 
11 Arguments:
12 pv_name
13    is the name of a physical volume.
14 drive_name
15    has the form <subsys>_<nn>, e.g., dska_02, or it may be -all to
16    cause the system to read and check the labels of all assumed
17    physical volumes.
18 
19 
20 Notes:  The registration file for volume_name is consulted to find out
21 the logical volume name and to validate the label.  The volume label is
22 read and checked.  If the label is correct the drive is left in the
23 known state.
24 
25 If an add_lv command for the logical volume containing this physical
26 volume has been previously issued, and if this add_vol command
27 completes the logical volume, the logical volume is accepted for paging
28 and a message is printed.