Dell PowerVault ML6000 Dell PowerVault ML6000 SCSI Reference Guide - Page 59
Read Keys Response, the PERSISTENT RESERVE OUT command. - service guide
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Read Keys Response The response for a Read Keys service action is shown the following table. Table 46 Read Keys Response Byte Bit 7 6 5 4 3 2 1 0 0 Generation 3 4 Additional Length (n-7) 7 Reservation Key List 8 First Reservation Key 15 . . . n-7 Last Reservation Key n 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. PowerVault ML6000 SCSI Reference Guide 49