HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Troubleshooting Guide (EK-G80TS-SA. C01, March 2005)

Utilities and Exercisers
77HSG60 and HSG80 Array Controller and Array Controller Software Troubleshooting Guide
Figure 10: SHOW RESERVATION Sample Output (HP Tru64 UNIX)
CLEAR RESERVATION command
The CLEAR RESERVATION command is a unit-level only command. Use it to
release a reservation to a connection that no longer exists but is not cleared by the
host bus adapter (HBA) or host third-party process logout (TPRLO) on that
connection. You can also use the command if the unit needs to be presented to a
different host, other than the one taking the reservation or holding a persistent
reservation out on it.
FMU> CLEAR RESERVATION <unit>
Note: Use the CLEAR DEVICE _ERRORS unit command with caution. Changing
or clearing reservations or persistent reservations allows any host to access a unit if the
host has a connection link to the unit.
FMU> Show Reservation
Unit D1 has a persistent reservation.
Host[0] TDRUM00 : R
Host[1] SHENG03 : R W
Host[2] SHENG02 : R W
Host[3] TDRUM02 : R
Host[4] SHENG01 : R W
Host[6] SHENG00 : R W
Unit D1 is registered by Host[1] SHENG03 with key 0x3523000000000010.
Unit D1 is registered by Host[2] SHENG02 with key 0x3523000000000010.
Unit D1 is registered by Host[4] SHENG01 with key 0x3523000000000010.
Unit D1 is registered by Host[6] SHENG00 with key 0x3523000000000010.
Unit D103 has a persistent reservation.
Host[0] TDRUM00 : R W
Host[1] SHENG03 : R
Host[2] SHENG02 : R
Host[3] TDRUM02 : R W
Host[4] SHENG01 : R
Host[6] SHENG00 : R
Unit D103 is registered by Host[0] TDRUM00 with key 0x0000000000010002.
Unit D103 is registered by Host[3] TDRUM02 with key 0x0000000000010002.