Changing Pdisk and Hdisk Numbers
Pdisk and hdisk numbers are assigned automatically when the using system is
configured. To help in system administration, it is sometimes useful to change these
numbers. If you want to change the numbers, use the following procedure:
1. Find the pdisk or hdisk number that you want to change, and select a new (unused)
name.
2. Give the command:
lsdev -Cl [disknumber] -Fconnwhere
where
[disknumber]
is the pdisk or hdisk number (for example, pdisk0) that you
want to change.
The command returns a ConnectionLocation number (for example,
004AC5119E000D).
3. Make a note of this number; you will need it later in this procedure.
4. Give the command:
lsdev -Cl [disknumber] -Ftype
where
[disknumber]
is the pdisk or hdisk number (for example, pdisk0) that you
want to change.
The command returns the device Type for the disk.
5. Make a note of this device type; you will need it later in this procedure.
6. Remove the existing pdisk or hdisk number from the configuration. Give the
command:
rmdev -l [disknumber] -d
where
[disknumber]
is the pdisk or hdisk number (for example, pdisk0) that you
want to remove.
7. Give the command:
mkdev -pssar -t [Type] -c [Class] -s ssar -w [ConnectionLocation] -l [NewDiskName]
where:
[Type]
is the disk type that you noted in step 5.
[Class]
is pdisk for a pdisk, or disk for an hdisk.
[ConnectionLocation]
is the number that you noted in step 3.
[NewDiskName]
is the pdisk or hdisk number (for example, pdisk0) that you want
for the disk.
For example:
mkdev -p ssar -t scsd -c pdisk -s ssar -w 004AC5119E000D -l pdisk50
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