Cisco Headend System Release 2.7 Installation Guide
Chapter 2 DNCS Pre-Upgrade Procedures
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Examine Mirrored Devices
Introduction
Before you disable the disk mirroring functions of the Enterprise 450 or the Sun Fire
880 DNCS in preparation of an upgrade, you should examine the status of the
mirrored drives on your system. All the disk mirroring functions must be working
normally before proceeding with the upgrade.
880 DNCS in preparation of an upgrade, you should examine the status of the
mirrored drives on your system. All the disk mirroring functions must be working
normally before proceeding with the upgrade.
CAUTION:
If the disk mirroring functions of the DNCS are not working properly before
the upgrade, you may not be able to easily recover from a failed upgrade.
the upgrade, you may not be able to easily recover from a failed upgrade.
Examining the Mirrored Devices
Follow these instructions to examine the status of the mirrored drives on your
Enterprise 450 or the Sun Fire 880 DNCS.
1 If necessary, open an xterm window on the DNCS.
2 Type metastat | more and then press Enter. The system displays the status of
Enterprise 450 or the Sun Fire 880 DNCS.
1 If necessary, open an xterm window on the DNCS.
2 Type metastat | more and then press Enter. The system displays the status of
all of the metadevices on the DNCS.
Note: Press the Spacebar, if necessary, to page through all of the output.
Note: Press the Spacebar, if necessary, to page through all of the output.
3 Check the conditions of the following two items and then answer the question in
step 4.
The designation ok appears in the State column next to each metadevice.
No Hot Spare indicates In Use.
4 Are both of the conditions listed in step 3 “true”?
If yes (to both conditions listed in step 3), go to Verify DBDS Stability (on
page 21).
page 21).
If no (to either or both conditions listed in step 3), call Cisco Services for help
in resolving these issues with the metadevices.
in resolving these issues with the metadevices.