HP j6700, Service Handbook

Page: 20 / 152

20 Chapter 1
Product Information
Front Panel Components
Step 2
• Reduce any logical volumes that have mirror copies on the faulty disk so that they no
longer mirror onto that disk (note the
-A n
option). This will take a several minutes.
lvreduce -m 0 -A n < LV name> /dev/dsk/<hard drive>
(for 1-way mirroring)
For example:
lvreduce -m 0 -A n /dev/vg00/stand /dev/dsk/c2t5d0
lvreduce -m 0 -A n /dev/vg00/swap /dev/dsk/c2t5d0
lvreduce -m 0 -A n /dev/vg00/ /dev/dsk/c2t5d0
The number of logical volumes that this step needs is variable. For instance, on a mirror
of a
root disk you should have at least three logical volumes: /stand (is
lvol1),
/
swap
(is
lvol2),
and
/
(is
lvol3)
. Note that if your
root
mirror disk dies,
you need to do the following:
— Follow the procedure in the section “Initial System Loader (ISL) Environment” in
the chapter “Boot Console Handler” in this document. At the Main Menu prompt
boot from the good disk.
— Type
y
at the
Interact with ISL
prompt and press
Enter
.
— Type this command at the ISL prompt and press
Enter
:
hpux -lq
The
-lq
option stands for loss of quorum. Once this procedure has been completed the
system will boot.
Step 3
• Replace the faulty disk.
• Do an
ioscan
on the replaced disk to insure that it is accessible and also as a double
check that it is a proper replacement.
For example:
ioscan /dev/dsk/c2t5d0
Step 4
• Restore the LVM configuration/headers onto the replaced disk from your backup of the
LVM configuration:
vgcfgrestore -n < volume group name> /dev/rdsk/cxtxdx
where x is the logical unit number of the disk that has been replaced.
For example:
vgcfgrestore -n /dev/vg00 /dev/rdsk/c2t5d0