Bug 1205806 – QCOW2 virtual size can bypass disk size checks for a flavor

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Bug 1205806 - QCOW2 virtual size can bypass disk size checks for a flavor

Summary:	QCOW2 virtual size can bypass disk size checks for a flavor

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat OpenStack
Classification:	Red Hat
Component:	openstack-nova (Show other bugs)
Sub Component:
Version:	5.0 (RHEL 6)
Hardware:	Unspecified Unspecified

Priority	high Severity high
Target Milestone:	z4
Target Release:	5.0 (RHEL 6)
Assigned To:	Pádraig Brady
QA Contact:	Prasanth Anbalagan
Docs Contact:

URL:
Whiteboard:
Keywords:	Triaged, ZStream

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2015-03-25 12:19 EDT by Pádraig Brady
Modified:	2016-01-04 09:43 EST (History)
CC List:	15 users (show)

See Also:
Fixed In Version:	openstack-nova-2014.1.4-2.el6ost openstack-nova-2014.1.4-2.el7ost
Doc Type:	Bug Fix
Doc Text:	Previously, the Compute service used incorrect size checks against the QCOW2 virtual size, which meant that the root-disk size for a flavor was not honored. With this fix, size checks have been reinstated, and instances are again restricted to the root-disk size of a flavor.
Story Points:	---
Clone Of:
Clones:	1205808 (view as bug list)
Environment:
Last Closed:	2015-04-16 10:36:27 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
OpenStack gerrit	167658	None	None	None	Never
Red Hat Product Errata	RHSA-2015:0843	normal	SHIPPED_LIVE	Important: openstack-nova security, bug fix, and enhancement update	2015-04-16 14:27:45 EDT

Groups: None (edit)

Description Pádraig Brady 2015-03-25 12:19:11 EDT

Introduced with the changes for bug 1062022 (RHOS 5 A3)

Comment 3 Prasanth Anbalagan 2015-04-07 09:33:28 EDT

Verified on the following version, Booting an instance from a QCOW2 image,
which has virtual_size bigger than one allowed by the given flavor
throws error message.

Version
========

[root@rhos-compute-node-02 ~(keystone_admin)]# yum list installed | grep openstack-nova
openstack-nova-api.noarch        2014.1.4-3.el6ost       @rhelosp-5.0-el6-puddle
openstack-nova-cert.noarch       2014.1.4-3.el6ost       @rhelosp-5.0-el6-puddle
openstack-nova-common.noarch     2014.1.4-3.el6ost       @rhelosp-5.0-el6-puddle
openstack-nova-compute.noarch    2014.1.4-3.el6ost       @rhelosp-5.0-el6-puddle
openstack-nova-conductor.noarch  2014.1.4-3.el6ost       @rhelosp-5.0-el6-puddle
openstack-nova-console.noarch    2014.1.4-3.el6ost       @rhelosp-5.0-el6-puddle
openstack-nova-novncproxy.noarch 2014.1.4-3.el6ost       @rhelosp-5.0-el6-puddle
openstack-nova-scheduler.noarch  2014.1.4-3.el6ost       @rhelosp-5.0-el6-puddle

Logs
=====

[root@rhos-compute-node-02 ~(keystone_admin)]# glance  image-create --name centos6 --disk-format qcow2 --container-format bare --file CentOS-6-x86_64-GenericCloud-20141129_01.qcow2 --is-public True
+------------------+--------------------------------------+
| Property         | Value                                |
+------------------+--------------------------------------+
| checksum         | 62ac2565e3527377860361f57639f334     |
| container_format | bare                                 |
| created_at       | 2015-04-07T13:15:53                  |
| deleted          | False                                |
| deleted_at       | None                                 |
| disk_format      | qcow2                                |
| id               | f7a89493-b343-4dbf-922f-87bbc6016611 |
| is_public        | True                                 |
| min_disk         | 0                                    |
| min_ram          | 0                                    |
| name             | centos6                              |
| owner            | 18c43b5677e14fa28d02ae6d23a0b527     |
| protected        | False                                |
| size             | 1151533056                           |
| status           | active                               |
| updated_at       | 2015-04-07T13:16:00                  |
| virtual_size     | None                                 |
+------------------+--------------------------------------+
[root@rhos-compute-node-02 ~(keystone_admin)]# glance image-list
+--------------------------------------+---------+-------------+------------------+------------+--------+
| ID                                   | Name    | Disk Format | Container Format | Size       | Status |
+--------------------------------------+---------+-------------+------------------+------------+--------+
| f7a89493-b343-4dbf-922f-87bbc6016611 | centos6 | qcow2       | bare             | 1151533056 | active |
| 976a4fc6-02eb-4ac7-abaf-4e69da8be222 | cirros  | qcow2       | bare             | 13147648   | active |
+--------------------------------------+---------+-------------+------------------+------------+--------+
[root@rhos-compute-node-02 ~(keystone_admin)]# nova image-list
+--------------------------------------+---------+--------+--------+
| ID                                   | Name    | Status | Server |
+--------------------------------------+---------+--------+--------+
| f7a89493-b343-4dbf-922f-87bbc6016611 | centos6 | ACTIVE |        |
| 976a4fc6-02eb-4ac7-abaf-4e69da8be222 | cirros  | ACTIVE |        |
+--------------------------------------+---------+--------+--------+
[root@rhos-compute-node-02 ~(keystone_admin)]# nova flavor-list
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| ID | Name      | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
| 1  | m1.tiny   | 512       | 1    | 0         |      | 1     | 1.0         | True      |
| 2  | m1.small  | 2048      | 20   | 0         |      | 1     | 1.0         | True      |
| 3  | m1.medium | 4096      | 40   | 0         |      | 2     | 1.0         | True      |
| 4  | m1.large  | 8192      | 80   | 0         |      | 4     | 1.0         | True      |
| 5  | m1.xlarge | 16384     | 160  | 0         |      | 8     | 1.0         | True      |
+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
[root@rhos-compute-node-02 ~(keystone_admin)]# nova boot --flavor 1 --image f7a89493-b343-4dbf-922f-87bbc6016611 test_1205806
ERROR: Flavor's disk is too small for requested image. (HTTP 400) (Request-ID: req-507f25c5-253b-4523-a6a4-17ceb376b03c)

Comment 5 errata-xmlrpc 2015-04-16 10:36:27 EDT

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.

https://rhn.redhat.com/errata/RHSA-2015-0843.html

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