how to resize qcow2 image and its inside filesystem?

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install

sudo yum install libguestfs-tools qemu-img

resize qcow2

$qemu-img resize linux.qcow2 50G
$qemu-img info linux.qcow2 
image: linux.qcow2
file format: qcow2
virtual size: 50G (53687091200 bytes)
disk size: 2.9G

resize fs

cp linux.qcow2 linux-orig.qcow2
virt-resize –expand /dev/sda1 linux-orig.qcow2 linux.qcow2

转载于:https://my.oschina.net/u/2475751/blog/3056047