fdisk tells you this:

Disk /dev/vda: 171.8GB

Your problem is that this disk has two small partitions: vda2 is a 7GB physical volume containing the root logical volume, and vda1 the 1GB boot partition. The rest of vda is free.

I don't know whether it is Nova or your image that determines how the disk is partitioned. There might be ways to influence the partitioning at instance launch time, but if so I don't know how.

To use the remaining space on your running instance, you could either create another physical volume or increase the size of vda2 and use pvresize to adapt the physical volume size.

Here is somebody with the same problem. Googling for openstack instance disk partition gives you more such results.

Your disk is correct, you need cloud-init (or your action) to resize partions.

Afaik: Assuming your using a cloud-enabled version of linux, the diskconfig should be done by cloud init on first boot.

https://cloudinit.readthedocs.io/en/l...

one other issue... is that if you try to be "helpful" and setup the storage partitions as mount points then the access rights are incorrect for the volumes to be written. Check the R/W group for the area you are storing the volumes in.

Also check(you may need the correct repos, or slightly different commands):

1.sudo yum install cloud-init 2.sudo yum install cloud-utils-growpart