Cisco Headend System Release 2.7 Installation Guide
Examine Mirrored Devices
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Examine Mirrored Devices
Before you disable the disk mirroring functions 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.
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.
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.
Examining the Mirrored Devices
Complete the following steps to examine the status of the mirrored drives on your
DNCS.
1 If necessary, open an xterm window on the DNCS.
2 Type the following command and press Enter. The system displays the status of
DNCS.
1 If necessary, open an xterm window on the DNCS.
2 Type the following command and press Enter. The system displays the status of
all of the metadevices on the DNCS.
metastat -c
Note: Press the Spacebar, if necessary, to page through all of the output.
3 Check for any devices that the system reports that need maintenance.
4 Do any devices need maintenance?
4 Do any devices need maintenance?
If yes, call Cisco Services for help in resolving these issues with the
metadevices.
metadevices.
If no, go to the next procedure in this chapter.