206 Alphabetical list of commands
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
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
Min. role
monitor
Syntax
show volume-reservations
all|
volumes
Parameters
all|
volumes
Specifies all volumes, or a comma-separated list of the names or serial numbers of specific volumes.
A name that includes a space must be enclosed in double quotes
Output
Name
The name of the volume.
Serial Number
The serial number of the volume.
Volume Reserved
•
Free
: The volume is not reserved.
•
Reserved
: The volume has been reserved by a host.
Host ID
The host WWPN node name.
Port
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.
•
Exclusive Access - Registrants Only
: Certain access (read, write) commands are
only allowed for registered hosts. There is a single reservation holder.
•
Write Exclusive - All Registrants
: Write commands are only allowed for registered
hosts. There is a single reservation holder.
•
Exclusive Access - All Registrants
: Certain access (read, write) commands are only
allowed for registered hosts. There is a single reservation holder.
•
Undefined
: The volume has no persistent reservations.
Example
Show reservations for all volumes.
# show volume-reservations all
Show reservations for volume
v2
.
# show volume-reservations v2
Summary of Contents for AssuredSAN 6004
Page 11: ...Document conventions and symbols 11 TIP Provides helpful hints and shortcuts...
Page 114: ...114 Alphabetical list of commands See also set cli parameters show protocols...
Page 139: ...show controller statistics 139 See also reset all statistics reset controller statistics...
Page 162: ...162 Alphabetical list of commands See also show power supplies...
