Monitoring controller status – Apple Xsan 1.4 User Manual
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Chapter 5
Managing Metadata Controllers
To upgrade controller software without interruption:
1
Switch all volumes to a standby controller.
Go to the primary controller, open Terminal, and type:
$ sudo cvadmin -e ”fail volume“
where
volume
is the name of an Xsan volume.
To see a list of volumes hosted by the controller, type:
$ sudo cvadmin -e select
To see which controller is hosting a volume, open Xsan Admin, select the volume, and
click Overview.
2
When all volumes are being hosted by the standby controller, upgrade the software on
the primary controller.
3
When you are finished upgrading the primary controller, use the methods in step 1 to
switch control of active volumes back to the primary controller.
Now you can upgrade the standby controller.
Monitoring Controller Status
For information about checking or reporting the status of a controller, see these topics:
 “Viewing a Controller’s CPU and Network Utilization” on page 136
 “Setting Up Status Notifications” on page 138
 “Checking the Status of File System Processes” on page 139