CLI Guide

The name of the volume.
Serial Number
The serial number of the volume.
Examples Show volume names and serial numbers.
# show volume-names
Base types
volume-names
status
See also
show maps
show volumes
show volume-reservations
Description
Shows persistent reservations for all or specified volumes. The persistent group reservations (PGR)
mechanism enables application clients on multiple hosts to control access to a storage volume, and limits
access by other hosts.
Each host must be registered with the storage system in order to establish a persistent reservation for a
volume, thereby becoming a reservation holder.
If the system gets into an abnormal state and you need to remove all registrations and reservations for
specified volumes to return them to a “clean” state, you can use the release volume command. This
command must be used with care, as described in its help.
For more information about persistent reservations, see the SPC-3 specification at http://www.t10.org/.
Minimum role monitor
Syntax
show volume-reservations
[all|volumes]
Output
Properties are described in alphabetical order.
Host ID
For an FC initiator, its WWPN. For a SAS initiator, its WWPN. For an iSCSI initiator, its node name (typically
the IQN).
Key
The reservation key, shown as a hexadecimal value.
Name
The name of the volume.
PGR Generation
The generation of the volume reservation, shown as a hexadecimal value.
Ports
The controller host-port identifiers.
Reservation Type
• Write Exclusive: Write commands are only allowed for a single reservation holder.
• Exclusive Access: Certain access (read, write) commands are only allowed for a single reservation
holder.
• Write Exclusive - Registrants Only: Write commands are only allowed for registered hosts. There is
a single reservation holder.
Alphabetical list of commands
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