I'm trying to re-size the file system on a Centos 7 vm because I made the vm too small to even do a yum update. I already have done some configurations to the virtual machine and it would be pain to do it all over again, so I've been trying to re-size the virtual machine using virt-resize
On the host machine when I run qemu-img info tkk.qcow2 I get the following information
image: tkk.qcow2
file format: qcow2
virtual size: 17G (18253611008 bytes)
disk size: 2.5G
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: true
The virtual size used to be smaller but I used qemu-img resize tkk.qcow2 +10G Then I created a backup of the original file tkk.qcow2 with cp tkk.qcow2 tkk-orig.qcow2 and then I ran
virt-resize –expand /dev/sda2 tkk-orig.qcow2 tkk.qcow2 to increase it's size. When I rerun qemu-img info tkk.qcow2 it shows that the Virtual Size has increase by whatever value I added on top of the previous value, but the Disk Size doesn't and I still can't do yum update due to too little space I would like to add at least 5GB more to this minimal vm.
The output of
virt-filesystems --long -h --all -a tkk.qcow2
/dev/sda1 filesystem xfs - - 15G -
/dev/centos_tkk/root filesystem xfs - - 1.3G -
/dev/centos_tkk/swap filesystem swap - - 204M -
/dev/centos_tkk/root lv - - - 1.3G /dev/centos_tkk
/dev/centos_tkk/swap lv - - - 204M /dev/centos_tkk
/dev/centos_tkk vg - - - 1.5G /dev/sda2
/dev/sda2 pv - - - 1.5G -
/dev/sda1 partition - - 83 15G /dev/sda
/dev/sda2 partition - - 8e 1.5G /dev/sda
/dev/sda device - - - 17G -
I have been following these steps on this blog https://fatmin.com/2016/12/20/how-to-resize-a-qcow2-image-and-filesystem-with-virt-resize/
