VG00 Alternate boot disk creation

[Sawant]

Dear Experts,

I have new hp-ux 11.23 machine and I want to create alternate boot disk. Please help.

Below ate the basic pv details for primary & alternate disks:

Alt:
--- Physical volumes ---
PV Name /dev/dsk/c2t6d0
VG Name /dev/vg00
PV Status available
Allocatable yes
VGDA 2
Cur LV 0
PE Size (Mbytes) 32
Total PE 4374
Free PE 4374
Allocated PE 0
Stale PE 0
IO Timeout (Seconds) default
Autoswitch On
Proactive Polling On

Pri:

PV Name /dev/dsk/c0t6d0
VG Name /dev/vg00
PV Status available
Allocatable yes
VGDA 2
Cur LV 10
PE Size (Mbytes) 32
Total PE 4374
Free PE 1340
Allocated PE 3034
Stale PE 0
IO Timeout (Seconds) default
Autoswitch On
Proactive Polling On

[Torsten.]

See the appendix here:

When_Good_Disks_Go_Bad_WP
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01911837/c01911837.pdf



Looks like you have a RISC based system.

[Sawant]

tnx for your early response. But still facing difficulty while creating vg00 alternate root disk.

Please share the steps for mirroring alternate root disk although server is up from primary disk and is running fine now.

[Torsten.]

Should I copy and paste the steps from the document???

[Torsten.]

Appendix D: Procedures
This section contains details on some of the procedures described earlier.

Mirroring the Root Volume on PA-RISC Servers



page 52

[點燃]

Root mirroring for PA-RISC

1. Initialize the disk and add it to vg00:
# pvcreate [-f] -B /dev/rdsk/cxtydz
# vgextend vg00 /dev/dsk/cxtydz

2. Mirror the LVs using lvextend:
# lvextend â m 1 /dev/vg00/lvolX /dev/dsk/cxtydz
If you want to use a shell loop to extend automatically, use e.g.:
# for lvol in lvol1 lvol2 ... lvol8 (specify any LV you need to mirror)
> do
> lvextend -m 1 /dev/vg00/$lvol /dev/dsk/cxtydz

3. Configure LIF/BDRA
Write LIF header and LIF files (ISL, AUTO, HPUX, LABEL):
# mkboot -l /dev/rdsk/cXtXdX
# lifls â l /dev/rdsk/cXtXdX (to ckeck it)

Write content of AUTO File: (if autoboot is desired)
# mkboot -a hpux /dev/rdsk/cXtXdX (autoboot with qurom enforced)
# mkboot -a â hpux â lqâ /dev/rdsk/cXtXdX (autoboot without qurom enforced)
# lifcp /dev/rdsk/cXtXdX:AUTO - (to ckeck it)

Write content of LABEL file, i.e set root, boot, swap and dump device:
# lvlnboot -r /dev//lvol3
# lvlnboot -b /dev//lvol1
# lvlnboot -s /dev//lvol2
# lvlnboot -d /dev//lvol2
# lvlnboot â v (to ckeck it)

4. Specify the mirror disk as alternate boot path in stable storage:
# setboot â a

5. Add the new mirror boot device to /stand/bootconf, e.g.:
l /dev/dsk/c0t6d0 (original boot device)
l /dev/dsk/cxtydz (new mirror boot device

Rgds!

[點燃]

Check out this attachment. Some text are not clear in the previous reply.

[Torsten.]

>> But still facing difficulty while creating vg00 alternate root disk.

What kind of problems?

The steps are now 3 times posted to this thread.

[Sawant]

Hi All,

Please find the error after giving lventend:

#pvcreate -f -B /dev/rdsk/c2t6d0
pvcreate: The physical volume "/dev/dsk/c2t6d0" is already recorded in the "/etc /lvmtab" file.
#vgextend vg00 /dev/dsk/c2t6d0
vgextend: The physical volume "/dev/dsk/c2t6d0" is already recorded in the "/etc /lvmtab" file.
#lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c2t6d0
Usage: lvextend
[-A Autobackup]
{-l LogicalExtentsNumber |
-L LogicalVolumeSize}
LogicalVolumePath [ PhysicalVolumePath... | PhysicalVolumeGroupName... ]
"m": Illegal option.

[Torsten.]

You don't have the mirror/UX product installed!

Depending on your OS version you need to buy it.

[Sawant]

Tnx for good response.