increase size LVDISK (VM Guest)

[Eli Daniel]

Hi,
i have increase size in the virtual machine for vgecc.
these disk asigned in the vgecc were assigned lvdisk in the VM host.
to change the size of vg in the guest VM guest I have the server down?

[Suraj K Sankari]

Hi,
>>to change the size of vg in the guest VM guest I have the server down?

If you have online JFS then reboot is not required

Suraj

[Eli Daniel]

how cant know?

[Eli Daniel]

Operation System 11.23 Itanium 64 bits

[Torsten.]

I have never done this before, but I assume if your guests are using 11.23 or an early 11.31 you need to do an vgmodify (on guest) to make LVM aware of the new size.

[Steven E. Protter]

Shalom,

hpvm version decides the outcome of this question.

Clearly life will be easier for you if you can boot the guests.

vgmodify functionality is added to 11.23 as a patch. It is built into 11.31

SEP

[Eli Daniel]

the system operation support JFS

In the case modify lvdisk:

VMhost
lvextend -L 400 /dev/vg01/lvol4

VMguest
lvextend 400 /dev/vg01/lvol4
fsadm -F -vxfs -b 400M /usr/app1/data1

the run command wiht vgmguest up.

these is true?

[TwoProc]

Re: your last question:

It's great that you've got Online JFS, therefore:

1) If you're on HPUX 11.3, then yes, that looks right.
2) If you're on HPUX 11.2, then you'll need to vgmodify first, then your commands.
3) If you're on HPUX 11.1, then no, you can't do this. You need to add new LUNS, not make existing LUNS larger.

Lastly, test this all out on a test server first, before changing production vm hosts and machines.

[Eli Daniel]

Hi John,
2) If you're on HPUX 11.2, then you'll need to vgmodify first, then your commands.

vgmodify in the Host or Vm Guest?

[Torsten.]

If you increase an LVOL on the host provided to the guest, you need to run vgmodify on the guest.

[Eli Daniel]

argument which I use for the VM Guest vgmodify?

[Eli Daniel]

Hi Torsten
I dont understand vgmodify in the VM host and VM guest?

I need to know how to increase or add a new disk to VM guest?
example:
Vm host
vgapp1 assigned LV disk to Vm Guest.

Vm host:
i need add 1 disk to vgapp1 and expand LV disk Vm guest.

Vm hosts:
vgextend /dev/vgapp1 /dev/dsk/c1t4d0
lvextend -L xxx /dev/vgapp1/lvapp1

Vm Guest:
lvextend -L xxx /dev/vg1/lv1

This is correct??

[Torsten. · Accepted solution]

If you extend the lvol on the host, you need to use vgmodify on the guest to make it aware of the increased virtual disk. Then you can use lvextend there.

[Eli Daniel]

torsten, sorry again, but as vgmodify use on the guest? syntax or option to use?

[Eli Daniel]

Thanks Torsten

[Torsten.]

For those who need a manual, search for the PDF titled:

"Using the vgmodify command to perform LVM Volume Group Dynamic LUN Expansion (DLE) and Contraction (DLC)"