topic Re: vgextend gives file too large? in Operating System - HP-UX

vgextend gives file too large?

Mark Hoensheid — Fri, 14 Mar 2003 15:22:03 GMT

I'm trying to get my mirroring setup and when I go to vgextend my vg01 to the target disk is get the following:

vgextend /dev/vg01 $COOK
vgextend: Couldn't install the physical volume "/dev/dsk/c2t2d0".
File too large

Only one logical volume with a size of 30GB on vg01. Both disks are identical in size?

Any ideas from the pro's?

Re: vgextend gives file too large?

Pete Randall — Fri, 14 Mar 2003 15:27:22 GMT

I guess I have to ask what $COOK is set to.

Pete

Re: vgextend gives file too large?

Mark Hoensheid — Fri, 14 Mar 2003 15:30:31 GMT

RAW=/dev/rdsk/c2t2d0
COOK=/dev/dsk/c2t2d0

Less typing....

Re: vgextend gives file too large?

Pete Randall — Fri, 14 Mar 2003 15:33:09 GMT

That certainly seems OK. Can you post a vgdisplay -v output?

Pete

Re: vgextend gives file too large?

Thierry Poels_1 — Fri, 14 Mar 2003 15:33:35 GMT

Hi,

I suppose $COOK = /dev/dsk/c2t2d0

A little voice tells me you need some patches. So which HPUX version, and how "recently" has it been patched?

regards,
Thierry.

Re: vgextend gives file too large?

S.K. Chan — Fri, 14 Mar 2003 15:35:27 GMT

I believe this has something to do with the size of your extent (default 4MB). In a large volume group you would see this problem even during the creation (did you not ?) because you need to increase the PE size from a default 4MB to a larger value (-s option in vgcreate).

Re: vgextend gives file too large?

Pete Randall — Fri, 14 Mar 2003 15:36:00 GMT

There's some "file too large" info in this thread, have a look:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x566d0fe6d0f7d61190050090279cd0f9,00.html

Pete

Re: vgextend gives file too large?

James R. Ferguson — Fri, 14 Mar 2003 15:36:22 GMT

Hi Mark:

Do a 'pvdisplay' for both disks. Make sure that the 'PE Size' is the same.

Regards!

...JRF...

Re: vgextend gives file too large?

Mark Hoensheid — Fri, 14 Mar 2003 15:39:00 GMT

Re: vgextend gives file too large?

Mark Hoensheid — Fri, 14 Mar 2003 15:41:53 GMT

Running HPUX 11i with December 2002 patch bundles

Re: vgextend gives file too large?

James R. Ferguson — Fri, 14 Mar 2003 15:46:01 GMT

Hi (again):

I'd still like to see a '*pv*display' for /dev/dsk/c2t2d0 and /dev/dsk/c2t0d0. Is the report PE Size smaller for c2t2d0 ?

Regards!

...JRF...

Re: vgextend gives file too large?

Pete Randall — Fri, 14 Mar 2003 15:48:01 GMT

From reading that other thread I pointed you to, it sounds like your PE size might be too small to accomodate the LVM structures.

Pete

Re: vgextend gives file too large?

Mark Hoensheid — Fri, 14 Mar 2003 15:54:37 GMT

pvdisplay /dev/dsk/c2t0d0
--- Physical volumes ---
PV Name /dev/dsk/c2t0d0
VG Name /dev/vg01
PV Status available
Allocatable yes
VGDA 2
Cur LV 1
PE Size (Mbytes) 4
Total PE 8681
Free PE 1181
Allocated PE 7500
Stale PE 0
IO Timeout (Seconds) default
Autoswitch On

NEW DISK
pvdisplay /dev/dsk/c2t2d0
pvdisplay: Couldn't find the volume group to which
physical volume "/dev/dsk/c2t2d0" belongs.
pvdisplay: Cannot display physical volume "/dev/dsk/c2t2d0"

When I created the pv is used:
pvcreate -f -B $RAW and is said is was created successfully with no warning or errors?

Re: vgextend gives file too large?

Patrick Wallek — Fri, 14 Mar 2003 16:16:51 GMT

I don't think this will make a difference, but since this is vg01 and this drive is not a boot drive, you don't need the '-B' option to pvcreate. The '-B' tells it to make the disk bootable.

Try just doing a

# pvcreate -f /dev/rdsk/c2t2d0

then vgextend and see what happens.

Re: vgextend gives file too large?

Pete Randall — Fri, 14 Mar 2003 16:17:24 GMT

According to

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&admit=-682735245+1047658241436+28353475&docId=200000062909773

you can calculate the PE size required thusly:

2*(30 + MAX_PE)/1024

In your case that comes out to a PE size of just over 8MB. I think you need to recreate the VG with a PE size of 16.

Pete

Re: vgextend gives file too large?

Thierry Poels_1 — Fri, 14 Mar 2003 17:20:36 GMT

Sorry, still doesn't sound right. A 30GB drive should not require a PE-size of 16.