Persistent Reservation Type Codes - Fujitsu MAP3147 Scsi Logical Interface Specifications

Code Name
0h Reserved
1h Write Reads Shared:
Exclusive
Writes Exclusive:
2h Reserved
3h Exclusive Reads Exclusive:
Access
Writes Exclusive:
4h Reserved
5h Write Reads Shared:
Exclusive-
Writes Exclusive:
Registrants
Only
6h Exclusive Reads Exclusive:
Access-
Registrants
Only
Writes Exclusive:
C141-E167
Table 3.2 Persistent reservation type codes
Any initiator can execute read commands
Except by an initiator holding a persistent reservation, a write
command executed by any initiator causes a reservation
conflict.
A read command executed by any initiator except an initiator
holding a persistent reservation causes a reservation conflict.
A write command executed by any initiator except an initiator
holding a persistent reservation causes a reservation conflict.
Any initiator can execute read commands
A write command executed by any initiator whose reservation
key is not registered using the Register service action causes a
reservation conflict.
A read command executed by any initiator whose reservation
key is not registered using the Register service action causes a
reservation conflict.
A write command executed by any initiator whose reservation
key is not registered using the Register service action causes a
reservation conflict.
3.1 Control/Sense Commands
Description
55
3 -