Read Keys Parameters-Field Descriptions; Read Reservations Parameters-Data Format - Maxtor ATLAS 10K III Product Manual

SCSI Description
T a b l e 5 - 1 1 1 Read Keys Parameters-Field Descriptions
& C V C ( K G N F
The value in this field is a 32-bit counter in the device server that is incremented
each time a PERSISTENT RESERVATION OUT command requests a Register, Clear,
Pre-empt, or Pre-empt and Clear operation. Note that PERSISTENT RESERVATION
IN commands do not increment the counter, nor do PERSISTENT RESERVATION
OUT commands that perform a Reserve or Release service action, or by a PERSIS-
TENT RESERVATION OUT command that is not done due to an error or a reservation
Generation conflict. The value in the Generation field is set to 0 as part of the power on or reset
processes.
The value in the Generation field allows the application client that examines the value
to verify that the configuration of the initiators attached to a logical unit has not been
modified by another application client without any notification of the application cli-
ent doing the examination.
This field contains the count of the number of bytes that are in the Reservation Key
Additional list (bytes 8 –
Length key list regardless of the value prescribed by the Allocation Length field in the com-
mand's CDB.
Each of the Reservation Keys appear as items in a list as bytes 8 through
entry reflects an 8-byte reservation key registered with the device server via the PER-
Reservation
SISTENT RESERVATION OUT, Reserve, Pre-empt, Pre-empt and Clear, or Register
Keys
service actions. Each key can be examined by the application client for correlation
with a set of initiators and SCSI ports
The data format and field descriptions for the Read Reservations Parameters are
described in Table 5-112 and Table 5-113 respectively.
T a b l e 5 - 1 1 2 Read Reservations Parameters-Data Format
$ K V
$ [ V G
(MSB)
0 - 3
(MSB)
4 - 7
(MSB)
8 -
2
5-90 Maxtor Atlas 10K III
) . Note that this field contains the number of bytes in the reservation
2
  
(See Figure 5-53 / Table 5-55 for detail of a Descriptor Field)(LSB)
& G U E T K R V K Q P
 
Generation
Additional Length ( – 7)
2
Reservation Descriptors
. Each
2
  
(LSB)
(LSB)