Device Reservations
30 SL500: Interface Reference Manual • July 2008 Revision: F • 96122
Device Reservations
The library supports the Reserve/Release management method and the Persistent
Reservations management method. These methods are defined in the ANSI SCSI-3
Primary Commands (SPC-3) standard. For the reservation restrictions placed on:
■ The Reserve/Release management method, see TABLE 3-6.
■ The Persistent Reservations management method, see TABLE 3-7.
Conflict Command will not be performed and the library will terminate
the command with Reservation Conflict status.
Allowed Command will be allowed to execute to normal completion.
TABLE 3-6 Reserve/Release Management Method
Command Action when Reserved by a different Initiator
Initialize Element (07h) Conflict
Initialize Element with Range (37h) Conflict
Inquiry (12h) Allowed
Log Sense (4Dh) Allowed
Mode Select (15h/55h) Conflict
Mode Sense (1Ah/5Ah) Conflict
Report LUNS (A0h) Allowed
Move Medium (A5h) Conflict
Persistent Reserve In (5Eh) Conflict
Persistent Reserve Out (5Fh) Conflict
Position to Element (2Bh) Conflict
Prevent/Allow Removal (1Eh) Prevent = 0, allowed
Prevent = 1, conflict
Read Element Status (B8h) Conflict, unless the CurData bit is 1 (see note)
Release Unit (17h/57h) Allowed, the reservation is not released.
Request Sense (03h) Allowed
Request Volume Element Address (B5) Conflict
Reserve Unit (16h/56h) Conflict
Send Diagnostic (1Dh) Conflict
Send Volume Tag (B6h) Conflict
Test Unit Ready (00h) Conflict
Write Buffer (3Bh) Conflict
Note: Currently, the CurData bit had not been fully implemented.
To Next Page
Loading...
Need help?
General
