Specifications

Chapter 4 System Software Installation and Configuration 4-5
4.3.1 Volume Labeling
At the end of the LUN creation process, format (1M) is called to label the LUN with
a volume label. If the LUN creation process is interrupted or the LUN is created via
the serial port, a valid Solaris label may not exist on the LUN. In this case, just label
the LUN manually using the format (1M) command.
4.4 Ghost LUNs and Ghost Devices
The following sample procedure corrects a configuration with a LUN that has a
drive defined at location [15,15] (not valid). The drive is an Optimal drive/LUN, and
the device appears as an extra Global Hot Spare (GHS).
Caution – Only trained and experienced Sun personnel should access the serial
port. You should have a copy of the latest Debug Guide. There are certain commands
that can destroy customer data or configuration information. No warning messages
appear if a potentially damaging command has been executed.
Note – This serial port procedure should be performed from the controller that
owns the LUN or a reboot will be necessary. Perform a ghsList for information
about the hot spare. You must extract the dev pointer information for use in
subsequent steps. Make a note of the output from ghsList.
You must obtain the devnum of the ghost drive. Use vdShow <LUN#>, where
<LUN#> is the LUN that contains the extra disk. You will se one of the devnums
from this LUN in the devnums of the list of GHSs.
1. Perform a ghsList for information about the hot spare.
You must extract the dev pointer information for use in subsequent steps. Make
note of the output from ghsList.
Information about two hot spares appears:
■ dev pointer=0x2b5348c is the address of the first Ghost Hot Spare, under
GHS 0.
Make a note of it.
-> ghsList