Cisco Headend Digital Broadband Delivery System 用户指南
Chapter 9 Detach and Attach Submirrors with the mirrState Utility
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Run the mirrState Utility
Select one of the following options when you run the mirrState utility:
To disable the disk mirroring functions, go to Detaching Mirrored Disks (on
page 74).
page 74).
To re-enable the disk mirroring functions, go to Re-Attaching Mirrored Disks
(on page 75).
(on page 75).
To obtain the version number of the mirrState utility currently loaded onto the
DNCS, go to Determining the Version Number of the mirrState Utility (on page
75).
DNCS, go to Determining the Version Number of the mirrState Utility (on page
75).
Important: The mirrState utility is restricted for use on the Sun Enterprise 450, Sun
Fire V445, V880, or V890 DNCS, only. If the mirrState utility is run on a DNCS using
another platform (for instance, a Sun Enterprise 250), the system will display a
message stating that no metadatabases are found and the utility will exit.
Fire V445, V880, or V890 DNCS, only. If the mirrState utility is run on a DNCS using
another platform (for instance, a Sun Enterprise 250), the system will display a
message stating that no metadatabases are found and the utility will exit.
Detaching Mirrored Disks
Follow these instructions to detach the mirrored disks on the Sun Enterprise 450,
Sun Fire V445, V880, or V890 DNCS.
1 Has the output of the check_metadevices utility revealed any errors associated
Sun Fire V445, V880, or V890 DNCS.
1 Has the output of the check_metadevices utility revealed any errors associated
with the metadevices on your system?
If yes, correct those errors before proceeding any further.
Important: The metadevices on your system must be working correctly
before you can detach mirrored disks.
Important: The metadevices on your system must be working correctly
before you can detach mirrored disks.
If no, go to step 2.
2 Complete the following steps to log on to the xterm window as root user.
a Type su - and press Enter. The password prompt appears.
b Type the root password and press Enter.
b Type the root password and press Enter.
3 Type mirrState.ksh -d and then press Enter. The system displays the following
message:
WARNING!!
Proceeding beyond this point will DETACH all Controller 2 submirrors.
Are you certain you want to proceed?
WARNING!!
Proceeding beyond this point will DETACH all Controller 2 submirrors.
Are you certain you want to proceed?
4 Type y and then press Enter. The system disables the disk mirroring functions on
the DNCS.
5 Type exit and then press Enter. You log out as root user in the xterm window.
6 Perform your maintenance operations on the DNCS and then go to Re-Attaching
6 Perform your maintenance operations on the DNCS and then go to Re-Attaching
Mirrored Disks (on page 75).