How can I change the size of the rootvg physical partition from 4 to
32. I am adding a 32GB drive to rootvg and it is rejected because of
to many PP's. I need to get it down to 1016. When I use the command
chvg -t 32 rootvg it claims it is invalid. Any help would be
appriciated. I am trying to get my system back from a crash.

john.wilwert@wgint.com (John) wrote in message news:<1c20c7b9.0409220501.16deccc@posting.google.c om>...
> How can I change the size of the rootvg physical partition from 4 to
> 32. I am adding a 32GB drive to rootvg and it is rejected because of
> to many PP's. I need to get it down to 1016. When I use the command
> chvg -t 32 rootvg it claims it is invalid. Any help would be
> appriciated. I am trying to get my system back from a crash.

For a normal volume group (without the -B option) the maximum size of
-t is 16. For a 32Gb disk, you need to set PP size to 64 Mb, as you
seem to have a 2Gb disk already, you need to use chvg -t 5

Steve

john.wilwert@wgint.com (John) wrote in message news:<1c20c7b9.0409220501.16deccc@posting.google.c om>...
> How can I change the size of the rootvg physical partition from 4 to
> 32. I am adding a 32GB drive to rootvg and it is rejected because of
> to many PP's. I need to get it down to 1016. When I use the command
> chvg -t 32 rootvg it claims it is invalid. Any help would be
> appriciated. I am trying to get my system back from a crash.

You can't change the PP size once a VG is created.

If you run a 'chvg -t 4' or 'chvg -t 8', then you should be able to
get the bigger disk installed into rootvg. The '-t' flag is a
'factor' and is used to multiply the max number of PPs allowed per
disk, but it also decreases the max number of disks allowed in the
volume group.

A factor of 4 will give 4064 PPs per PV, which would give you room for
a 16GB disk. A factor of 8 will give 8128 PPs per disk, which is room
for a 32GB disk.

So, try 'chvg -t 8 rootvg' and then you should be able to add your
bigger disk.

BV

Do a man on chvg - you will see the t flag refers to a factor value - you
probably want to enter something like (chvg -t 8 vgname). This will allow 8
x 1016 PP per physical Volume.

The other way is to do a mksysb restore to the new disk. This will give you
32MB PP size.

"John" <john.wilwert@wgint.com> wrote in message
news:1c20c7b9.0409220501.16deccc@posting.google.co m...
> How can I change the size of the rootvg physical partition from 4 to
> 32. I am adding a 32GB drive to rootvg and it is rejected because of
> to many PP's. I need to get it down to 1016. When I use the command
> chvg -t 32 rootvg it claims it is invalid. Any help would be
> appriciated. I am trying to get my system back from a crash.