An instance RBD snapshots don't work

[Denis Kostryukov]

When I try to create a snapshot from an instance it creates standard snapshot instead of RBD snapshot.
I get the following error in nova-compute.log:

2017-06-01 18:54:21.501 5940 INFO nova.compute.manager [req-7603f0a8-1178-466c-9b5e-903c7ff7bbcb ec0ffcafc20244029d090e7e98aa0461 9b05738c81444d5e8ba74669c058f53a - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] instance snapshotting
2017-06-01 18:54:21.746 5940 INFO nova.compute.manager [req-5bb61737-13af-4c66-af8f-7072b6611d71 - - - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] VM Paused (Lifecycle Event)
2017-06-01 18:54:22.287 5940 INFO nova.compute.manager [req-5bb61737-13af-4c66-af8f-7072b6611d71 - - - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] During sync_power_state the instance has a pending task (image_snapshot). Skip.
2017-06-01 18:54:23.287 5940 INFO nova.virt.libvirt.driver [req-7603f0a8-1178-466c-9b5e-903c7ff7bbcb ec0ffcafc20244029d090e7e98aa0461 9b05738c81444d5e8ba74669c058f53a - - -] [instance: a5eeeaf7-7d0b-
4348-b84f-f009d57703b9] Beginning cold snapshot process

2017-06-01 18:54:28.283 5940 WARNING nova.virt.libvirt.driver [req-7603f0a8-1178-466c-9b5e-903c7ff7bbcb ec0ffcafc20244029d090e7e98aa0461 9b05738c81444d5e8ba74669c058f53a - - -] Performing standard snapshot because direct snapshot failed: no write permission on storage pool images

2017-06-01 18:54:31.380 5940 INFO nova.compute.manager [req-5bb61737-13af-4c66-af8f-7072b6611d71 - - - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] VM Started (Lifecycle Event)
2017-06-01 18:54:32.080 5940 INFO nova.virt.libvirt.driver [req-7603f0a8-1178-466c-9b5e-903c7ff7bbcb ec0ffcafc20244029d090e7e98aa0461 9b05738c81444d5e8ba74669c058f53a - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] Snapshot extracted, beginning image upload
2017-06-01 18:54:32.157 5940 INFO nova.compute.manager [req-5bb61737-13af-4c66-af8f-7072b6611d71 - - - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] During sync_power_state the instance has a pending task (image_pending_upload). Skip.
2017-06-01 18:54:32.158 5940 INFO nova.compute.manager [req-5bb61737-13af-4c66-af8f-7072b6611d71 - - - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] VM Resumed (Lifecycle Event)
2017-06-01 18:54:32.340 5940 INFO nova.compute.manager [req-5bb61737-13af-4c66-af8f-7072b6611d71 - - - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] During sync_power_state the instance has a pending task (image_uploading). Skip.
2017-06-01 18:54:35.973 5940 INFO nova.virt.libvirt.driver [req-7603f0a8-1178-466c-9b5e-903c7ff7bbcb ec0ffcafc20244029d090e7e98aa0461 9b05738c81444d5e8ba74669c058f53a - - -] [instance: a5eeeaf7-7d0b-4348-b84f-f009d57703b9] Snapshot image upload complete

MOS 9.0 Mitaka

Possible related issues:
https://bugs.launchpad.net/openstack-manuals/+bug/1538244
https://disqus.com/home/discussion/sebastienhan/openstack_nova_snapshots_on_ceph_rbd_sebastien_han/#comment-3025636092

[Max Yatsenko (myatsenko)]

The problem was reproduced only on 'clean' MOS9.0 environment, when an environment was deployed with all MU - the issue was not reproduced.

In upstream similar problem was solved by this patch:
https://review.openstack.org/#/c/407410/

This one was backported to fuel-infra:
https://review.fuel-infra.org/gitweb?p=openstack/fuel-library.git;a=commit;h=7cb1801e005472fe4dc33fd45bdfd639d352b5b4
https://review.fuel-infra.org/gitweb?p=openstack/fuel-library.git;a=commit;h=d891b4fd30677acb112e7e6b26e36e5c267028cf

[Denis Kostryukov (dkostryukov)]

After upgrade an existing environment to 9.2 the error still persists.
The error has gone after reset and redeploy the environment.

[Max Yatsenko (myatsenko)]

~dkostryukov
As for MOS9.2 with MUs this problem is not confirmed - can you please provide your steps to reproduce upgrade to 9.2? Its needed/helpfull for further issue investigation/solving.

[Denis Kostryukov (dkostryukov)]

I just followed these procedures

https://docs.mirantis.com/openstack/fuel/fuel-9.2/release-notes/update-product/update-master-9-2.html
https://docs.mirantis.com/openstack/fuel/fuel-9.2/release-notes/update-product/update-env-9-2.html (excluding step 12)

[Fuel Devops McRobotson (fuel-devops-robot)]

Fix proposed to branch: 9.0/mitaka
Change author: Max Yatsenko <email address hidden>
Review: https://review.fuel-infra.org/36018

[Fuel Devops McRobotson (fuel-devops-robot)]

Reviewed: https://review.fuel-infra.org/36018
Submitter: Pkgs Jenkins <email address hidden>
Branch: 9.0/mitaka

Commit: 0dba9f2f3787b00782e7ea14904d4e38192b746d
Author: Max Yatsenko <email address hidden>
Date: Fri Jul 21 09:50:15 2017

Add write permission for ceph 'image' pool

It adds write permission for ceph 'image' pool
if it is missing.

Change-Id: Ifefbc5fedc3bba89de8ea103cb8e6f25cab71f4e
Closes-Bug: #1695061

[Vladimir Jigulin (vjigulin)]

Verified on 9.2 mu3-proposed

With proposed:
No warnings in logs
RBD snapshot instead of standard