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

[Rafael David Tinoco]

** Description changed:

  [Impact]
  
   * The original fix for bug 1219658 introduced a factor of 1024 error
   in the resulting rbd image size. Big impact.
  
  [Test Case]
  
-  * To be provided.
+  * To have icehouse openstack using rbd image backend for libvirt:
+  
+ Images seem to be 1024 larger than expected.
+ 
+ For example (comment #3):
+ 
+ # rbd -p images info ae9d23f0-b5a0-4d92-a15d-b3f23d276c72_disk rbd image 'ae9d23f0-b5a0-4d92-a15d-b3f23d276c72_disk':
+         size 20480 GB in 5242880 objects
+         order 22 (4096 kB objects)
+         block_name_prefix: rbd_data.1cac92ae8944a
+         format: 2
+         features: layering
+ 
+ when the expect size should be 20 GB.
  
  [Regression Potential]
  
   * Fix is running in a big production without any problem.
  
   * 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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