Expand the original disk or add a second vdisk from Infrastructure client.
If you want to perform a grow w/o reboot you have to add a second disk THEN TAKE A SNAPSHOT!!!

then from on the vm either create an additional partition on the free space. The partition type is 8e

cfdisk /dev/sda

# for example if the new partition is /dev/sda3

# create logical disk /dev/sda3

# make disk visible to linux

partprobe
pvcreate /dev/sda3

if you are running a newer kernel you can issue this command to male linux re-read the disk geometry:

echo "1" > /sys/class/scsi_device/<device>/device/rescan

or assign the whole new disk to lvm assuming it's /dev/sdb

apt-get install scsitools
rescan-scsi-bus.sh
cfdisk /dev/sdb

### for example if the new partition is /dev/sda3

 pvcreate /dev/sdb

now you have to extend the volgroup. use lvdisplay to see which is the name of the group, in this example it's base

lvdisplay 
--- Logical volume ---
LV Name                /dev/base/root
VG Name                base
LV UUID                8cL9Qd-ksIn-1Ve2-94ym-gTrW-8jet-91tnah
LV Write Access        read/write
LV Status              available
# open                 1
LV Size                5.00 GB
Current LE             1280
Segments               1
Allocation             inherit
Read ahead sectors     0
Block device           254:0
 
--- Logical volume ---
LV Name                /dev/base/tmp
VG Name                base
LV UUID                mEnEXY-UtOf-P439-MDpg-BlT3-n8hI-Q6KIfm
LV Write Access        read/write
LV Status              available
# open                 1
LV Size                1.00 GB
Current LE             256
Segments               1
Allocation             inherit
Read ahead sectors     0
Block device           254:1
 
--- Logical volume ---
LV Name                /dev/base/swap
VG Name                base
LV UUID                fm2A23-FPb3-itQa-Fvf2-QQmj-giwI-j8FZAf
LV Write Access        read/write
LV Status              available
# open                 2
LV Size                2.00 GB
Current LE             512
Segments               1
Allocation             inherit
Read ahead sectors     0
Block device           254:2
 
--- Logical volume ---
LV Name                /dev/base/data
VG Name                base
LV UUID                GZKUbb-hZn2-igXN-3dxj-TNz9-1C15-I8u8MR
LV Write Access        read/write
LV Status              available
# open                 1
LV Size                1.52 GB
Current LE             389
Segments               1
Allocation             inherit
Read ahead sectors     0
Block device           254:3

and we assume the new partition is /dev/sda3

vgextend base /dev/sda3

check with pvscan if the extend was successfull

pvscan

Now we extend the “data” partition to 11.5 GB. See man lvextend for other options
11.5 G is the NEW total size of the disk we want to extend!

lvextend -L 11.5G  /dev/base/data

Extend with 20G

lvextend -L +20G  /dev/base/data 

now we have to grow the filesystem /data

 xfs_growfs /data

swapoff /dev/base/swap lvextend -L 3.9G /dev/base/swap mkswap /dev/base/swap swapon /dev/base/swap free

Check if filesystems are ok, and only then release the snapshot

For ext2/ext3

resize2fs /dev/base/data