Lucent Technologies 585-210-940 User Manual
Maintaining Mirrored Systems
CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Using the alternate boot device
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3
Maintaining Mirrored Systems
3
This chapter contains procedures you are likely to need to
maintain a disk-mirrored system, including replacing disk
drives, recovering from disk failures, and using the olds scripts.
maintain a disk-mirrored system, including replacing disk
drives, recovering from disk failures, and using the olds scripts.
Using the alternate boot device
3
When you set up your mirrored system, you created an alternate boot
device named
device named
bootdevice2.
The alternate boot device is a fail-safe device. If for some reason you are
unable to boot from the primary boot disk—a corrupted boot disk, for
example—you can tell the system to boot from the alternate device until
further notice.
unable to boot from the primary boot disk—a corrupted boot disk, for
example—you can tell the system to boot from the alternate device until
further notice.
You do that by entering one of the following commands, depending upon
whether you are at the boot prompt or in root:
whether you are at the boot prompt or in root:
_________________________________________________________________
ok
setenv
boot-device
bootdevice2
#
eeprom
boot-device=bootdevice2
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To reset the boot device to the primary disk, enter one of the following
commands, again depending upon whether you are at the boot prompt or
in root:
commands, again depending upon whether you are at the boot prompt or
in root:
_________________________________________________________________
ok
setenv
boot-device
disk
#
eeprom
boot-device=disk
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