Public bug reported: How to reproduce it:
Two images, one of them with with hw_disk_bus=scsi and hw_scsi_model =virtio-scsi properties: $ glance image-show 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 +------------------+--------------------------------------+ | Property | Value | +------------------+--------------------------------------+ | checksum | 79b4436412283bb63c2cba4ac796bcd9 | | container_format | bare | | created_at | 2017-02-24T08:45:48Z | | disk_format | qcow2 | | id | 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 | | min_disk | 0 | | min_ram | 0 | | name | cirros-0.3.4-i386-disk | | owner | 277132bf94b040f0842bd66d71a0d574 | | protected | False | | size | 12506112 | | status | active | | tags | [] | | updated_at | 2017-02-24T08:45:52Z | | virtual_size | None | | visibility | public | +------------------+--------------------------------------+ $ glance image-show 8ce9540e-a802-4e39-a1b4-20cbff14ec18 +------------------+--------------------------------------+ | Property | Value | +------------------+--------------------------------------+ | checksum | 79b4436412283bb63c2cba4ac796bcd9 | | container_format | bare | | created_at | 2017-02-24T09:07:44Z | | disk_format | qcow2 | | hw_disk_bus | scsi | | hw_scsi_model | virtio-scsi | | id | 8ce9540e-a802-4e39-a1b4-20cbff14ec18 | | min_disk | 0 | | min_ram | 0 | | name | cirros-scsi | | owner | bd560276f6bd48219ddcd7c9fb245ec1 | | protected | False | | size | 12506112 | | status | active | | tags | [] | | updated_at | 2017-02-24T09:07:45Z | | virtual_size | None | | visibility | shared | +------------------+--------------------------------------+ $ nova boot --flavor m1.small --image 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 vm1 $ virsh dumpxml instance-00000003 | grep '.*target.*bus' <target dev='vda' bus='virtio'/> $ nova rebuild vm1 cirros-scsi $ nova show vm1 | grep image | image | cirros-scsi (8ce9540e-a802-4e39-a1b4-20cbff14ec18) $ virsh dumpxml instance-00000003 | grep '.*target.*bus' <target dev='vda' bus='virtio'/> The problem is that despite property hw_disk_bus set on cirros-scsi (8ce9540e-a802-4e39-a1b4-20cbff14ec18), 'virtio' (and vda) is not replaced in the instance's XML file. The expected result IMO should be like a normal boot from this image: $ nova boot --flavor m1.small --image 8ce9540e-a802-4e39-a1b4-20cbff14ec18 vm2 $ virsh dumpxml instance-00000004 | grep '.*target.*bus' <target dev='sda' bus='scsi'/> ** Affects: nova Importance: Undecided Status: New ** Tags: image rebuild scsi ** Description changed: How to reproduce it: Two images, one of them with with hw_disk_bus=scsi and hw_scsi_model =virtio-scsi properties: - $ glance image-show 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 + $ glance image-show 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 +------------------+--------------------------------------+ | Property | Value | +------------------+--------------------------------------+ | checksum | 79b4436412283bb63c2cba4ac796bcd9 | | container_format | bare | | created_at | 2017-02-24T08:45:48Z | | disk_format | qcow2 | | id | 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 | | min_disk | 0 | | min_ram | 0 | | name | cirros-0.3.4-i386-disk | | owner | 277132bf94b040f0842bd66d71a0d574 | | protected | False | | size | 12506112 | | status | active | | tags | [] | | updated_at | 2017-02-24T08:45:52Z | | virtual_size | None | | visibility | public | +------------------+--------------------------------------+ $ glance image-show 8ce9540e-a802-4e39-a1b4-20cbff14ec18 +------------------+--------------------------------------+ | Property | Value | +------------------+--------------------------------------+ | checksum | 79b4436412283bb63c2cba4ac796bcd9 | | container_format | bare | | created_at | 2017-02-24T09:07:44Z | | disk_format | qcow2 | | hw_disk_bus | scsi | | hw_scsi_model | virtio-scsi | | id | 8ce9540e-a802-4e39-a1b4-20cbff14ec18 | | min_disk | 0 | | min_ram | 0 | | name | cirros-scsi | | owner | bd560276f6bd48219ddcd7c9fb245ec1 | | protected | False | | size | 12506112 | | status | active | | tags | [] | | updated_at | 2017-02-24T09:07:45Z | | virtual_size | None | | visibility | shared | +------------------+--------------------------------------+ - $ nova boot --flavor m1.small --image 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 vm1 $ virsh dumpxml instance-00000003 | grep '.*target.*bus' - <target dev='vda' bus='virtio'/> + <target dev='vda' bus='virtio'/> - $ nova rebuild vm1 cirros-scsi - $ stack@devstack-adam:~/devstack$ nova show vm1 | grep image + $ nova rebuild vm1 cirros-scsi + $ nova show vm1 | grep image | image | cirros-scsi (8ce9540e-a802-4e39-a1b4-20cbff14ec18) $ virsh dumpxml instance-00000003 | grep '.*target.*bus' - <target dev='vda' bus='virtio'/> + <target dev='vda' bus='virtio'/> The problem is that despite property hw_disk_bus set on cirros-scsi (8ce9540e-a802-4e39-a1b4-20cbff14ec18), 'virtio' (and vda) is not replaced in the instance's XML file. The expected result IMO should be like a normal boot from this image: $ nova boot --flavor m1.small --image 8ce9540e-a802-4e39-a1b4-20cbff14ec18 vm2 $ virsh dumpxml instance-00000004 | grep '.*target.*bus' - <target dev='sda' bus='scsi'/> + <target dev='sda' bus='scsi'/> -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1667667 Title: Rebuilding instance ignores image's property hw_disk_bus Status in OpenStack Compute (nova): New Bug description: How to reproduce it: Two images, one of them with with hw_disk_bus=scsi and hw_scsi_model =virtio-scsi properties: $ glance image-show 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 +------------------+--------------------------------------+ | Property | Value | +------------------+--------------------------------------+ | checksum | 79b4436412283bb63c2cba4ac796bcd9 | | container_format | bare | | created_at | 2017-02-24T08:45:48Z | | disk_format | qcow2 | | id | 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 | | min_disk | 0 | | min_ram | 0 | | name | cirros-0.3.4-i386-disk | | owner | 277132bf94b040f0842bd66d71a0d574 | | protected | False | | size | 12506112 | | status | active | | tags | [] | | updated_at | 2017-02-24T08:45:52Z | | virtual_size | None | | visibility | public | +------------------+--------------------------------------+ $ glance image-show 8ce9540e-a802-4e39-a1b4-20cbff14ec18 +------------------+--------------------------------------+ | Property | Value | +------------------+--------------------------------------+ | checksum | 79b4436412283bb63c2cba4ac796bcd9 | | container_format | bare | | created_at | 2017-02-24T09:07:44Z | | disk_format | qcow2 | | hw_disk_bus | scsi | | hw_scsi_model | virtio-scsi | | id | 8ce9540e-a802-4e39-a1b4-20cbff14ec18 | | min_disk | 0 | | min_ram | 0 | | name | cirros-scsi | | owner | bd560276f6bd48219ddcd7c9fb245ec1 | | protected | False | | size | 12506112 | | status | active | | tags | [] | | updated_at | 2017-02-24T09:07:45Z | | virtual_size | None | | visibility | shared | +------------------+--------------------------------------+ $ nova boot --flavor m1.small --image 48888bbf-ddbf-4ede-a30f-b5b4a8e68876 vm1 $ virsh dumpxml instance-00000003 | grep '.*target.*bus' <target dev='vda' bus='virtio'/> $ nova rebuild vm1 cirros-scsi $ nova show vm1 | grep image | image | cirros-scsi (8ce9540e-a802-4e39-a1b4-20cbff14ec18) $ virsh dumpxml instance-00000003 | grep '.*target.*bus' <target dev='vda' bus='virtio'/> The problem is that despite property hw_disk_bus set on cirros-scsi (8ce9540e-a802-4e39-a1b4-20cbff14ec18), 'virtio' (and vda) is not replaced in the instance's XML file. The expected result IMO should be like a normal boot from this image: $ nova boot --flavor m1.small --image 8ce9540e-a802-4e39-a1b4-20cbff14ec18 vm2 $ virsh dumpxml instance-00000004 | grep '.*target.*bus' <target dev='sda' bus='scsi'/> To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1667667/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp