[Bug 1219658] Re: Wrong image size using rbd backend for libvirt

[Rafael David Tinoco]

** Description changed:

  [Impact]
  
-   * [2cebfd2] libvirt: convert cpu features attribute from list to 
-                        a set (LP: #1267191)
-   	
- 	cpu features list which is being sent to libvirt,
- 	when creating a domain or calling compareCPU, must contain only
- 	unique entries. Multiple issues arise when we are updating the
- 	features attribute in LibvirtConfigCPU class (for example during
- 	migration).
- 	
-   * [b86a0e5] Fixes rdb backend image size (LP: #1219658) -> THIS!
+   * [2cebfd2] libvirt: convert cpu features attribute from list to
+                        a set (LP: #1267191)
  
- 	The original fix for bug 1219658 introduced a factor of 1024 error
- 	in the resulting rbd image size -> real urgent to be fixed.
+  cpu features list which is being sent to libvirt,
+  when creating a domain or calling compareCPU, must contain only
+  unique entries. Multiple issues arise when we are updating the
+  features attribute in LibvirtConfigCPU class (for example during
+  migration).
+ 
+   * [b86a0e5] Fixes rdb backend image size (LP: #1219658) -> THIS!
+ 
+  The original fix for bug 1219658 introduced a factor of 1024 error
+  in the resulting rbd image size -> real urgent to be fixed.
  
  [Test Case]
+  
+  LP: #1267191
+  * systemctl restart openstack-nova-compute
+    Observe /var/log/nova/compute.log
  
-  * To be provided soon. 
-    Tests indicate fix is running in a big production without any problem.
+  LP: #1219658
+  * Testing this fix implies only in having rdb backend.
  
  [Regression Potential]
  
-  * To be provided soon.
+  * Tests indicate fix is running in a big production without any
+ problem.
+ 
+  LP: #1267191
+  * A regression would continue to cause nova not to start (as is happening
+    today with this bug under described conditions).
+ 
+  LP: #1219658
+  * RDB backend could stop working (keeping the bug will eventualy cause 
+    an outage for those who use rdb backend)
  
  [Other Info]
  
  For rbd image backend for libvirt, the root partition will use the image
  size not 'disk' size. It lack of resize root volume in the codes.

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https://bugs.launchpad.net/bugs/1219658

Title:
  Wrong image size using rbd backend for libvirt

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