Enlarge KVM based linux guest

[blackjack]

I have proxmox 1.9 and running 4 VMs(iso -linux server 11.10). I want to enlarge one VM, since it is out of storage now. my images are qcow2 format.

VMhost1:~# vgdisplay

--- Volume group ---
  VG Name               pve
  System ID             
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  44
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                4
  Open LV               4
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               930.52 GB
  PE Size               4.00 MB
  Total PE              238212
  Alloc PE / Size       169283 / 661.26 GB
  Free  PE / Size       68929 / 269.25 GB
  VG UUID               nwiDYA-XyVw-IaCK-lRod-EB8g-ubO5-Y6GFh0

VMhost1:~# fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          66      524288   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              66       60801   487859712   8e  Linux LVM

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1          66      524288   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sdb2              66       60801   487859712   8e  Linux LVM

VMhost1:~# df -h

Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/pve-root   95G  1.1G   89G   2% /
tmpfs                 2.0G     0  2.0G   0% /lib/init/rw
udev                   10M  716K  9.4M   7% /dev
tmpfs                 2.0G     0  2.0G   0% /dev/shm
/dev/mapper/pve-data  356G   29G  327G   9% /var/lib/vz
/dev/sdb1             504M   35M  445M   8% /boot
/dev/mapper/pve-storage
                      197G   42G  145G  23% /storage

I have used following command to enlarge my image from 10GB to 15GB.

VMhost1:/var/lib/vz/images/103# qemu-img resize vm-disk-ide0.qcow2 +5GB
Image resized.
VMhost1:/var/lib/vz/images/103# qemu-img info vm-disk-ide0.qcow2
image: vm-disk-ide0.qcow2
file format: qcow2
virtual size: 15G (16106127360 bytes)
disk size: 9.6G
cluster_size: 4096

Then I used Gparted to grow the guest VM space with unalocated space.


Please give me a elaborated solution of what to do next....