Revisize-qemu-img.md

How to resize VM

first Shut down the virtual machine

virsh shudown image.qcow2

then Resize the image with

qemu-img resize image.qcow2 +SIZE

then Start the virtaul machine

virsh start image.qcow2

open vm console and log in

virsh console image.qcow2

Collect some details again about our current partitioning

• df -h
• fdisk -l

Unmont the part

• umount /dev/sda1
• fdisk /dev/sda
• fsck -n /dev/vda2

Type m to get a list of all commands:

Command (m for help): m
Command action
   a   toggle a bootable flag
   b   edit bsd disklabel
   c   toggle the dos compatibility flag
   d   delete a partition
   l   list known partition types
   m   print this menu
   n   add a new partition
   o   create a new empty DOS partition table
   p   print the partition table
   q   quit without saving changes
   s   create a new empty Sun disklabel
   t   change a partition's system id
   u   change display/entry units
   v   verify the partition table
   w   write table to disk and exit
   x   extra functionality (experts only)

print the partition table p

Now we delete partition d follow by part number

Next we create a new one n It was a primary partition before, so we choose p, and again it is our partition.

If the original part had the bootable flag, so we must add it to our new a

Now let's write our new partition table and exit fdisk w

and reboot

then

• e2fsck -f /dev/vda2
• resize2fs /dev/vda2
• fsck -n /dev/vda2
• tune2fs -j /dev/vda2
• reboot

and voila

• df -h
• fdisk -l
• fdisk -s /dev/vda1