208 Fabric OS Administrator’s Guide
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Validating a firmware download
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d. Enter the haShow command to confirm that the HA state is in sync.
Stop! If you have completed step 11, then you have committed the firmware on both CPs and
you have completed the firmware download procedure.
12. Restore the firmware on the standby CP.
In the current Backbone session for the standby CP, enter the firmwareRestore command. The
standby CP reboots and the current Backbone session ends. Both partitions have the same
Fabric OS after several minutes.
13. Perform haFailover on the active CP.
a. In the current Backbone session for the active CP, enter the haShow command to verify
that HA synchronization is complete. It takes a minute or two for the standby CP to reboot
and synchronize with the active CP.
b. Enter the haFailover command. The active CP reboots and the current Backbone session
ends. The Backbone is now running the original firmware.
14. Restore firmware on the “new” standby CP.
a. Wait one minute and connect to the Backbone on the new standby CP, which is the old
active CP.
b. Enter the firmwareRestore command. The standby CP reboots and the current Backbone
session ends. Both partitions have the same Fabric OS after several minutes.
c. Wait five minutes and log in to the Backbone. Enter the firmwareShow command and
verify that all partitions have the original firmware.
If an AP blade is present: Blade partitions always contain the same version of the firmware
on both partitions (it does not keep two copies). The firmware is stored on the blade’s
compact flash card and is always synchronized with the active CP’s firmware. Thus, if you
restore the active CP firmware, the blade firmware is automatically downloaded
(auto-leveled) to become consistent with the new CP firmware (the blade firmware is
basically restored).
Your system is now restored to the original partitions on both CPs. Make sure that servers using the
fabric can access their storage devices.
If you want to upgrade a Backbone with only one CP in it, follow the procedures in “Test and restore
firmware on switches” on page 204. Note, however, that upgrading a Backbone with only one CP is
disruptive to switch traffic.
Validating a firmware download
Validate the firmware download by running the following commands: firmwareShow,
firmwareDownloadStatus, nsShow, nsAllShow, and fabricShow.
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