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Bug 1047863

Summary: Openstack-Nova: Unpause instance after host reboot fails
Product: Red Hat OpenStack Reporter: Tzach Shefi <tshefi>
Component: openstack-novaAssignee: Xavier Queralt <xqueralt>
Status: CLOSED ERRATA QA Contact: Gabriel Szasz <gszasz>
Severity: high Docs Contact:
Priority: medium    
Version: 4.0CC: ajeain, breeler, dallan, ndipanov, sradvan, vpopovic, yeylon
Target Milestone: z2Keywords: Triaged, ZStream
Target Release: 4.0   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: openstack-nova-2013.2.1-4.el6ost Doc Type: Bug Fix
Doc Text:
Previously, rebooting a host caused all its instances to stop and change to the SHUTDOWN power state. The unpause action was only allowed on instances with PAUSED power state. As a consequence, it was impossible to unpause/start/reboot an instance that had been paused before the reboot. As it makes no sense to unpause an instance once it has been stopped, a check has been added in a periodic task that will fix the state and stop instances that are in SHUTDOWN/CRASHED power state but are still in the PAUSED state. As a result users can now start those instances again, preventing them from being stuck in an inconsistent state.
 Story Points: ---
Clone Of: Environment:
RHEL RHOS Havana
Last Closed: 2014-03-04 19:04:46 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
compute.log try to unpuase after reboot none

Description Tzach Shefi 2014-01-02 12:10:32 UTC 
Created attachment 844520 [details]
compute.log try to unpuase after reboot

Description of problem:
Unpauseing an instance fails if host has rebooted. 

Version-Release number of selected component (if applicable):
RHEL: release 6.5 (Santiago)
RHOS: Havana
openstack-nova-api-2013.2.1-1.el6ost.noarch
openstack-nova-compute-2013.2.1-1.el6ost.noarch
openstack-nova-scheduler-2013.2.1-1.el6ost.noarch
openstack-nova-common-2013.2.1-1.el6ost.noarch
openstack-nova-console-2013.2.1-1.el6ost.noarch
openstack-nova-conductor-2013.2.1-1.el6ost.noarch
openstack-nova-novncproxy-2013.2.1-1.el6ost.noarch
openstack-nova-cert-2013.2.1-1.el6ost.noarch

How reproducible:
Every time 

Steps to Reproduce:
1. Boot an instance 
2. Pause that instance
3. Reboot host
4. Unpause instance  

Actual results:
can't unpause instance stuck in status paused, power state - shutdown

Expected results:
Instance should unpause, return to running state

Additional info:

virsh list -all --managed-save 
ID is missing from paused instance "-" (pausecirros), state -> shut off.

[root@orange-vdse ~(keystone_admin)]# virsh list --all --managed-save
 Id    Name                           State
----------------------------------------------------
 1     instance-00000003              running
 2     instance-00000002              running
 -     instance-00000001              shut off

[root@orange-vdse ~(keystone_admin)]# nova list  (notice nova status paused)
+--------------------------------------+---------------+--------+------------+-------------+-----------------+
| ID                                   | Name          | Status | Task State | Power State | Networks        |
+--------------------------------------+---------------+--------+------------+-------------+-----------------+
| ebe310c2-d715-45e5-83b6-32717af1ac90 | cirros        | ACTIVE | None       | Running     | net=192.168.1.4 |
| 3ef89feb-414f-4524-b806-f14044efdb14 | pausecirros   | PAUSED | None       | Shutdown    | net=192.168.1.5 |
| 8bcae041-2f92-4ae2-a2c2-ee59b067ac76 | suspendcirros | ACTIVE | None       | Running     | net=192.168.1.2 |
+--------------------------------------+---------------+--------+------------+-------------+-----------------+


Testing without rebooting host, ID/state ("1"/paused) instance (cirros) are ok and it unpauses ok.

[root@orange-vdse ~(keystone_admin)]# virsh list --all --managed-save
 Id    Name                           State
----------------------------------------------------
 1     instance-00000003              paused
 2     instance-00000002              running
 -     instance-00000001              shut off
+--------------------------------------+---------------+--------+------------+-------------+-----------------+
| ID                                   | Name          | Status | Task State | Power State | Networks        |
+--------------------------------------+---------------+--------+------------+-------------+-----------------+
| ebe310c2-d715-45e5-83b6-32717af1ac90 | cirros        | PAUSED | None       | Paused      | net=192.168.1.4 |
| 3ef89feb-414f-4524-b806-f14044efdb14 | pausecirros   | PAUSED | None       | Shutdown    | net=192.168.1.5 |
| 8bcae041-2f92-4ae2-a2c2-ee59b067ac76 | suspendcirros | ACTIVE | None       | Running     | net=192.168.1.2 |
+--------------------------------------+---------------+--------+------------+-------------+-----------------+
Comment 5 errata-xmlrpc 2014-03-04 19:04:46 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2014-0231.html