LVM Issue

[Ernesto Rincon]

Hi:

We have configured a file system of 2 Tb size (/dev/vg01/lvol1). We need to extend it to a final size of 6.5 Tb. The respective volume group will be extended with 76 disks of 60 Gb each. My question is: with the configuration of the volume group (included in the attachment) can we will extend the file system to 6.5 Tb final size? O we need to recreate the volume group with other specifications?
Somebody can help me?
Thanks

[IT_2007 · Accepted solution]

You won't be able to do it based on your PE size 64MB because it comes to logical volume size

/dev/vg01/lvol1 = 65535 X 64MB = 4194240MB = 4.1TB max.

See more information in the link:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1065778

[Bill Hassell]

It depends also on your version of HP-UX and your filesystem version. This will give you the maximum sizes:

http://www.docs.hp.com/en/5971-2383/5971-2383.pdf

Now, *IF* your VxFS filesystem has been converted to version 5, you can have a filesystem up to 32Tb. *BUT* only with VxVM 3.5 only (not LVM) and OnLineJFS license for greater than 2 TB file system. The HP-UX 11i V2 (B.11.23) September 2004 release is required to use file systems greater than 16 TB. Otherwise, 2 Tb is the LVM limit.

Note also that to increase the PE size from 64 to the max of 256, you'll have to rebuild the entire volume group (destroys all vg0 volumes).

[Ernesto Rincon]

Thanks a lot IT & Bill, your comments were very usefull.

Regards.