User's Guide

Table Of Contents
50 SCSI Commands
Persistent Reserve In Response
Response data is returned depending on the requested service action.
Read Keys Response
The response for a Read Keys service action is shown the following table.
Generation – This field is a 32-bit counter that is incremented every time a PERSISTENT RESERVE OUT
command requests a Register, a Register and Ignore Existing Key, a Clear, a Preempt, or a Preempt and
Abort service action. This counter is not maintained across power cycles.
Additional Length – This field indicates the length in bytes of the Reservation Key List.
Reservation Key List – This is a list of all the 8-byte reservation keys that have been registered through
the PERSISTENT RESERVE OUT command.
Table 46 Read Keys Response
Bit
Byte
76543210
0
:
3
Generation
4
:
7
Additional Length (n-7)
Reservation Key List
8
:
15
First Reservation Key
:
n-7
:
n
Last Reservation Key