Mirror

[Marco_163]

I still learn how to configure and unconfigure mirror in HP-UX 11.11.
After last mirror configuration, during boot from alternate disk a received message:

Boot
:Exec format failed:
Exec format error

ISL>


I guess I made mistake during unconfiguration mirror, because I only use lvreduce command.
Than I had reduced the mirror by
lvreduce and vgreduce and next configured mirror again with no erorror.
But now, I can boot system from primary disk.
Lvlnboot and lvdisplay command show mw that mirrot is configured but something went wrong because I coudn't boot system from the altenate disk.
What I should to do to solve the problem?

# lvlnboot -v
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c1t15d0 (0/0/1/1.15.0) -- Boot Disk
/dev/dsk/c3t15d0 (0/0/2/1.15.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c1t15d0
/dev/dsk/c3t15d0
Root: lvol3 on: /dev/dsk/c1t15d0
/dev/dsk/c3t15d0
Swap: lvol2 on: /dev/dsk/c1t15d0
/dev/dsk/c3t15d0
Dump: lvol2 on: /dev/dsk/c1t15d0, 0


# lvdisplay /dev/vg00/lvol1 | grep Mirror
Mirror copies 1
# lvdisplay /dev/vg00/lvol2 | grep Mirror
Mirror copies
# lvdisplay /dev/vg00/lvol3 | grep Mirror
Mirror copies 1
# lvdisplay /dev/vg00/lvol4 | grep Mirror
Mirror copies 1
# lvdisplay /dev/vg00/lvol5 | grep Mirror
Mirror copies 1
# lvdisplay /dev/vg00/lvol6 | grep Mirror
Mirror copies 1
# lvdisplay /dev/vg00/lvol7 | grep Mirror
Mirror copies 1
# lvdisplay /dev/vg00/lvol8 | grep Mirror
Mirror copies 1

[Sunil Sharma_1]

Have you done
pvcreate -B and
mkboot

see more information on man mkboot and man pvcreate


Sunil

[Shaikh Imran]

Hi,
I think you forgot
#lvlnboot -R
i.e. now your other disk is mirrored but
it's not a proper boot disk.
Compare :
#lifls /dev/rdsk/c1t15d0
#lifls /dev/rdsk/c3t15d0

And at last try mirroring according to this
doc:

Regards,

[Bernhard Mueller]

Marco,

you definitely forgot to run mkboot after the pvcreate -B command.

lifls /dev/rdsk/xyz would have told you "not a LIF volume"

instead it should list:
ISL AUTO HPUX PAD LABEL

Regards,
Bernhard

[Victor Fridyev]

Hi,

Try to use the attched script. You can see all needed operations. Also you can remove thre additional disk from vg00 and run the script.
HTH

[Geoff Wild]

Here's what I follow to mirror root - you will have to start over - remove the mirrors for all the lv's in vg00...

Say /dev/dsk/c0t6d0 is the root disk and /dev/dsk/c3t6d0 is the disk you want to make a mirror of.

1. Create a bootable LVM disk to be used for the mirror.
pvcreate -B /dev/rdsk/c3t6d0
2. Add this disk to the current root volume group.
vgextend /dev/vg00 /dev/dsk/c3t6d0
3. Make the new disk a boot disk.
mkboot -l /dev/rdsk/c3t6d0
4. Copy the correct AUTO file into the new LIF area.
mkboot -a "hpux -lq (;0)/vmunix" /dev/rdsk/c3t6d0
5. Mirror the boot, root and primary swap logical volumes to the new
bootable disk. Ensure that all devices in vg00, such as /usr, /swap,
etc., are mirrored.
The following is an example of mirroring the boot logical volume:
lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c3t6d0
The following is an example of mirroring the primary swap logical
volume:
lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c3t6d0
The following is an example of mirroring the root logical volume:
lvextend -m 1 /dev/vg00/lvol3 /dev/dsk/c3t6d0
6. Update the boot information contained in the BDRA for the mirror
copies of boot, primary swap and root.
/usr/sbin/lvlnboot -b /dev/vg00/lvol1
/usr/sbin/lvlnboot -s /dev/vg00/lvol2
/usr/sbin/lvlnboot -r /dev/vg00/lvol3
7. Check if the BDRA is correct.
/usr/sbin/lvlnboot -R /dev/vg00
8. Verify that the mirrors were properly created.
lvlnboot -v /dev/vg00
The output of this command is shown in a display like the following:
Boot Definitions for Volume Group /dev/vg00:
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c0t6d0 (1/0/0/3/0.6.0) -- Boot Disk
/dev/dsk/c3t6d0 (1/0/1/0/0/1/1.6.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Root: lvol3 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Swap: lvol2 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Dump: lvol2 on: /dev/dsk/c0t6d0, 0

vgdisplay -v vg00

Then lvextend for all other lvols:

lvextend -m 1 /dev/vg00/lvol4 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol5 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol6 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol7 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol8 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol9 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol10 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol11 /dev/dsk/c3t6d0



Rgds...Geoff