[Bug 1837054] Re: Only volume-backed servers are allowed for flavors with zero disk.

Takashi NATSUME natsume.takashi at lab.ntt.co.jp
Fri Jul 19 09:16:56 UTC 2019


Related changes were as follows:

Add policy rule to block image-backed servers with 0 root disk flavor
https://review.opendev.org/#/c/561284/

Default zero disk flavor to RULE_ADMIN_API in Stein
https://review.opendev.org/#/c/603910/


The default rule of "os_compute_api:servers:create:zero_disk_flavor" has been changed to "rule:admin_api" since stein.
But "rule:admin_or_owner" can be set for it in the nova policy file.

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https://bugs.launchpad.net/bugs/1837054

Title:
  Only volume-backed servers are allowed for flavors with zero disk.

Status in OpenStack Compute (nova):
  New
Status in nova package in Ubuntu:
  New

Bug description:
  Hello,

  we upgraded to latest OpenStack release from queens to stein. After
  the upgrade we expect some problem with resize of instances. We use
  only volume-backed instances based on cinder-ceph. If we want to
  resize the instance we encounter: Only volume-backed servers are
  allowed for flavors with zero disk. (HTTP 403)

  All our Flavors have 0 disk and the resize worked in queens. Do we
  miss something here?

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