adding new logical volume to an existing lun

[Tom_HPUX]

how do you add a new logical volume on the same lun that has no free space. example:

have 2 logical volume: lvol1, lvol2.
there is no free space on lvol1, but 4-gb free space on lvol2.

how to create a new lvol3 with 3-gb that used lun on lvol1. thanks

[Rajeev Shukla]

you can create a new lvol3 with lvcreate command
lvcreate -L 3000 -n lvol3 /dev/vg???
But unfortunately you can not attach it or span it to lvol1. What you could do is identify a directory that is large or is growing and mount this lvol3 on that diretcory and move the data across.
First create a filesystem on lvol3 and mount it on a temporary directory, then move the data from the diretcory to it and unmount and mount it as the original directory.
But i hope its not the lvol1 on root VG (vg00) coz this for that this is not the right way.

[Jeeshan]

just do the lvol creation steps u did earlier

#lvcreate -L 3000 -n lvol3 /dev/

[Asif Sharif]

http://docs.hp.com/en/B3921-90010/lvcreate.1M.html

[Robert Salter]

You can't, there is no space.

You should be looking at the vg and seeing if there's any free space there. If you have a lvol that has available space you could reduce the size of the lvol, but be aware, the space could come from anywhere in the lun that the lvol resides on and possibly wipe out some data.

If there's free space available in another vg, use that to create your lvol3. Why does it have to be on the same lun as lvol1?

[Torsten.]

"how to create a new lvol3 with 3-gb that used lun on lvol1"

Do you really want to create a new lvol3
or
do you want to increase lvol1?

[Tom_HPUX]

thanks all for the reply... Current allocation of the lvol::

lvol1 - disk_01 No Free Space
lvol2 - disk_02 has 3 gb free
lvol3 - disk_03 has 3 gb free

objective to create a new logical volume on disk_01

thanks for any advise

[Jeeshan]

so now assign points. :-)

[Torsten.]

Still not clear.

objective to create a new logical volume on disk_01 - no free space left.

How about extending lvol1 to disk_03???

[Tom_HPUX]

Like Torsten mentioned,does anyone has the step-by-step on lvextend vol1 to disk3?


thanks

[Robert Salter]

You can try looking here;
http://docs.hp.com/en/B2355-90950/ch06s02.html#bficeaha

[Robert Salter]

OR you could do a man on lvextend

[Torsten.]

Let's start by posting a vgdisplay -v for this VG.

[Tom_HPUX]

thanks all. I have found my solution

[Torsten.]

You are welcome.

Did you already read this?

http://forums12.itrc.hp.com/service/forums/helptips.do?#33