Extending a Volume Group and striping new Luns

[Michael Callaghan]

I have the syntax for striping luns within a volume group using lvcreate on HPUX 11i.

I have created a volume group and have logical volumes striped across luns within that volume group.

The question is, if I extend the above volume group with new luns, can I specify, when creating new logical volumes only stripe on the new luns.

[Fred Ruffet · Accepted solution]

What you can do is to create a zero-sized lv and specify your new PVs when extending your LV to the wanted size.

Regards,

Fred

[Victor BERRIDGE]

Hi Michael,
My 2 cents...
I would go straight away in creating a new VG for the new luns you want to stripe before things get confusing, I generally choose the vgname to remind on what the LVM lie on (except vg00...) so I know s4vg03 is for stripes on 4pv s2vg04, stripes on 2 disks,r5vg02 is (our standard)raid5 ...
Like that the day you are short of space in a vg, you know already how many PV youo are to add...

All the best
Victor

[Michael Callaghan]

So what is the syntax:

lvcreate -n [lvol_name] -i [number of luns] -I 64 vg_name

lvextend -L [Size] vol_grp_name DISK DISK DISK etc

Have you ever tryed this yourself ???

[Michael Callaghan]

Thanks Victor, great minds think alike but
other than going through the new vg solution thought their might be another way
Cheers
Michael

[Michael Callaghan]

Thanks Fred

Tried those two syntaxs in my reply and it worked

Cheers

Michael

[Michael Callaghan]

As per my reply to fred