topic Re: Change PV Link path in Operating System - HP-UX

Change PV Link path

j773303 — Wed, 18 Oct 2006 01:13:11 GMT

--- Volume groups ---
VG Name /dev/vg11

--- Physical volumes ---
PV Name /dev/dsk/c19t0d2
PV Name /dev/dsk/c13t0d2 Alternate Link
PV Name /dev/dsk/c18t0d2 Alternate Link
PV Name /dev/dsk/c15t0d2 Alternate Link
PV Status available
Total PE 6945
Free PE 0
Autoswitch On

Hi expert,
Please see the above VG11 info. Is it possible chagne the PV Link path as below?

Thanks.

PV Name /dev/dsk/c13t0d2
PV Name /dev/dsk/c19t0d2 Alternate Link
PV Name /dev/dsk/c18t0d2 Alternate Link
PV Name /dev/dsk/c15t0d2 Alternate Link
PV Status available
Total PE 5208
Free PE 0
Autoswitch On

Re: Change PV Link path

Yang Qin_1 — Wed, 18 Oct 2006 01:31:58 GMT

You can use vgreduce and vgextend to reorganize Alternate links.

vgreduce /dev/vg11 /dev/dsk/c19t0d2
vgextend /dev/vg11 /dev/dsk/c19t0d2

and vg11 will become to:
PV Name /dev/dsk/c13t0d2
PV Name /dev/dsk/c18t0d2 Alternate Link
PV Name /dev/dsk/c15t0d2 Alternate Link
PV Name /dev/dsk/c19t0d2 Alternate Link

One thing I don't understand is that why you expect the "Total PE" will be reduced from 6945 to 5208?

Yang

Re: Change PV Link path

j773303 — Wed, 18 Oct 2006 01:46:31 GMT

Sorry the typing error . Total PE 6945

Re: Change PV Link path

Rajeev Shukla — Wed, 18 Oct 2006 01:51:11 GMT

Yes either you can do vgreduce and then vgextend or try this single command
pvchange -s /dev/dsk/c13t0d2
this will set the /dev/dsk/c13t0d2 as the primary disk