problem trying to lvextend a FS part of a strict VG

[Prashant Zanwar_4 · Accepted solution]

You are having distributed policy. You have to turn off the distributed allocation policy and then extend your LV.
lvchange -D n

Do lvextend and then again turn on distributed policy. It requires PVG strict policy.

Hope above helps
Prashant

[Sundar_7]

As I noted, allocation policy for the LV is distributed.

I believe these are the following new PVs you have added to the volume group

PV Name /dev/dsk/c57t11d0
PV Name /dev/dsk/c69t11d0 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c69t11d1
PV Name /dev/dsk/c57t11d1 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c63t11d2
PV Name /dev/dsk/c75t11d2 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c75t11d3
PV Name /dev/dsk/c63t11d3 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c57t11d4
PV Name /dev/dsk/c69t11d4 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c69t11d5
PV Name /dev/dsk/c57t11d5 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c63t11d6
PV Name /dev/dsk/c75t11d6 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c75t11d7
PV Name /dev/dsk/c63t11d7 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c57t12d0
PV Name /dev/dsk/c69t12d0 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On

PV Name /dev/dsk/c69t12d1
PV Name /dev/dsk/c57t12d1 Alternate Link
PV Status available
Total PE 3472
Free PE 3472
Autoswitch On


As could be seen in the lvdisplay, LV is distributed across 4 PVs. Now to be able to increase the LV, you must add 4 PVs to the PVG group PVG1.

# vi /etc/lvmpvg
PVG name pvg1

PV Name /dev/dsk/c57t2d0
PV Name /dev/dsk/c69t2d1
PV Name /dev/dsk/c63t2d2
PV Name /dev/dsk/c75t2d3
PV Name /dev/dsk/c57t11d0
PV Name /dev/dsk/c63t11d6
PV Name /dev/dsk/c75t11d6 PV Name /dev/dsk/c75t11d7
PV Name /dev/dsk/c63t11d7 PV Name /dev/dsk/c57t12d0
PV Name /dev/dsk/c69t12d0 PV Name /dev/dsk/c69t12d1
PV Name /dev/dsk/c57t12d1

Now try lvextend

Also remember, you should not add the primary link to one PVG and the alternate link of the same PV to a different PVG. That is not going to confuse LVM but will defintely confuse you :-)

[Prashant Zanwar_4]

you can also use while changing back to distributed policy lvchange -D f
Thanks
Prashant

[Mark Harshman_1]

ok...but i dont really want to add 4 more disks to each PVG. I dont want to increase it that much. So.. if i turn off distributed allocation, then extend the LV, then turn distributed allocation back on, can i do that so i only have to add one PV? thanks to all.

[Prashant Zanwar_4]

You can do it. Dont allow any writes that time. You may just unmount the file system this time.

Thanks
Prashant

[Prashant Zanwar_4]

I would further suggest keep backup also.

Thanks
Prashant

[Prashant Zanwar_4]

Did you do it any further.

And please do not forget to assign points :-)

Take your time...whenever done just remember to post summary..

Thanks
Prashant

[Mark Harshman_1]

i took the easy way out and just created a new mountpoint and PVG. thanks to all.