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Hi Domi,

You are referring to Cinder, so I'm assuming that you are doing a boot from volume instead of using a local disk. In that case the flavor does not apply to the size of the volume. The Cinder volume VHD(X) gets resized to the requested volume size, which in turn is attached to the Nova VM.

What is not clear is the 2.3 GB size. Volume sizes are multiples of 1GB, so the VHDX size should be e.g. 3GB. Are you sure that the reported size does not refer to the partition inside the VHDX and not the VHDX itself?

Hi Domi,

You are referring to Cinder, so I'm assuming that you are doing a boot from volume instead of using a local disk. In that case the flavor does not apply to the size of the volume. The Cinder volume VHD(X) gets resized to the requested volume size, which in turn is attached to the Nova VM.

What is not clear is the 2.3 GB size. Volume sizes are multiples of 1GB, so the VHDX size should be e.g. 3GB. Are you sure that the reported size does not refer to the partition inside the VHDX and not the VHDX itself?

update

The master branch is not affected, while on Liberty, the recently added Cinder caching patch introduced a minor regression that affected resizing. The fix is trivial and has been committed to 7.0.0 / 7.0.1 release branches: https://github.com/cloudbase/cinder/commit/fbb9cf6f1eff12b410b1878c14125f1d674b53dd

Thanks for signaling this issue,

Alessandro