Creating a 1MB extent volume group

[Donald C Nelson]

I have a customer who needs to create a four-17gb disk volume groups of 1MB extents. I have never create a 1mb extend on a VG before so when I use the command:

vgcreate -s 1 /dev/vg00 /dev/dsk/c?t?d? /dev/dsk/c?t?d?

...Creating volume group vg01...
vgcreate: Volume group "/dev/vg01" could not be created:
VGRA for the disk is too big for the specified parameters. Increase the
extent size or decrease max_PVs/max_LVs and try again.

I can't increase the extent sizes nor decrease the max_PV's/max LV's. Is there a way that I can increase the max number of physical extents (-e) in the command.

[James R. Ferguson · Accepted solution]

Hi Donald:

Something has to yield. There's a nice table in chapter-16 of the Software Recovery Handbook which shows various values for 'pe_size' and 'max_pv' choices.

http://www2.itrc.hp.com/service/iv/docDisplay.do?docId=prodITRC/DE_SW_UX_swrec_EN_01_E/LVM.pdf

You haven't offered the reasons for your constraints nor all of their values.

Regards!

...JRF...

[Donald C Nelson]

James, this documentation is what I needed.

Thanks