OpenStack Nova Compute Charm

  1. Bug #1896617
  2. Comment #18

Comment 18 for bug 1896617

Revision history for this message
Corey Bryant (corey.bryant) wrote : Re: Creation of image (or live snapshot) from the existing VM fails if libvirt-image-backend is configured to qcow2 starting from Ussuri

This is not related (it's been there since 2015) but the o+x can be explained by nova/virt/libvirt/driver.py:

 2384 with utils.tempdir(dir=snapshot_directory) as tmpdir:
 2385 try:
 2386 out_path = os.path.join(tmpdir, snapshot_name)
 2387 if live_snapshot:
 2388 # NOTE(xqueralt): libvirt needs o+x in the tempdir
 2389 os.chmod(tmpdir, 0o701)
 2390 self._live_snapshot(context, instance, guest,
 2391 disk_path, out_path, source_format,
 2392 image_format, instance.image_meta)
 2393 else:
 2394 root_disk.snapshot_extract(out_path, image_format)
 2395 LOG.info("Snapshot extracted, beginning image upload",
 2396 instance=instance)