The workaround suggested in comment #19 only works if nova-compute is
configured to use "rbd" as the libvirt-image-backend.
On a CIS-hardened deployment with the default backend ("qcow2"), tempest
passes the two resize_ tests, however, as a side-effect, tempest fails
both tests under the
tempest.api.compute.images.test_images_oneserver.ImagesOneServerTestJSON
test group. Errors seen are exactly as described in this issue:
https://bugs.launchpad.net/charm-nova-compute/+bug/1896617 and there are
no workarounds for that issue on yoga.
I've tried adding/changing/removing user-group settings for
nova/kvm/libvirt-qemu, but none of those resolve it because libvirtd-
qemu doesn't have access to the the snapshots directory within nova.
If libvirt-image-backend is unset or set to "qemu", the only workaround
to get tempest to pass both resize image and the image snapshot test
groups is to loosen the unmask to 022 as suggested in
https://bugs.launchpad.net/charm-nova-compute/+bug/1967956/comments/17.
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https://bugs.launchpad.net/bugs/1967956
Title:
Permission denied when trying to resize images
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