Open Stack

I am using openstack latest victoria release on ubuntu 20.04. The instance
is launched from horizon and storage types are created.



>From UI,

boot source is: IMAGE

Create New Volume: Yes

Size: 5



Below is the output that I have set default volume type in cinder.conf



root at storage:/etc/cinder# grep default_volume_type cinder.conf

default_volume_type = lvm_backed



However from openstack cli I have created a volume from image in
lvm_backend storage type and booted a instance from it. It goes successful.



I haven't set any property in image. Below is the image output.



+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

| Field            |
Value



                                                                     |

+------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

| checksum         |
ab8436743c2a55b25615afa265631584



                                         |

| container_format |
bare

                                         |

| created_at       |
2020-12-17T08:58:56Z



             |

| disk_format      | qcow2




                                                        |

| file             |
/v2/images/1024317b-0db6-418c-bc39-de9b61d8ce59/file


                                                        |

| id               |
1024317b-0db6-418c-bc39-de9b61d8ce59
                                                        |

| min_disk         |
0


                            |

| min_ram          |
0




|

| name             |
Ubuntu2004-Official


|

| owner            |
890eb2b7d1b8488aa88de7c34d08817a



                                           |

| properties       | os_distro='ubuntu20.04', os_hash_algo='sha512',
os_hash_value='e8c8eb68bfca0aa3f165750d7b913f51cf7ded73e6f51f4c59d08b8788ad4e570f04e92318fd52ffea396ee55e2771d3def475c5b52992c6b43eb591d2a288e2',
os_hidden='False', owner_specified.openstack.md5='',
owner_specified.openstack.object='images/Ubuntu2004-Official',
owner_specified.openstack.sha256='' |

| protected        |
False



               |

| schema           |
/v2/schemas/image

               |

| size             |
547815424


                                                          |

| status           | active




                              |

| tags
|


                              |

| updated_at       |
2021-02-09T06:29:57Z




  |

| virtual_size     |
2361393152


  |

| visibility       |
public



                                             |
Look like horizon is prefering __DEFAULT__ storage type while creating an
instance from cinder backed volume.

On Thu, 18 Feb 2021, 18:47 Rajat Dhasmana, <rdhasman at redhat.com> wrote:

> Hi Malik,
>
> I would like to know which openstack release is used.
>
> On Thu, Feb 18, 2021 at 4:41 PM Malik Obaid <malikobaidadil at gmail.com>
> wrote:
>
>> Hi,
>>
>> I am creating nova instance with cinder backed iscsi storage. I have
>> created multiple storage types. But my launched instance from image use
>> storage type __DEFAULT__ for flavor's root volume.
>>
>
> Is the instance launched via horizon or CLI and if CLI which command is
> used?
>
>
>> I have changed default_volume_type to mystoragetype in cinder.conf but
>> instances root volume still goes in __DEFAULT__ storage type.
>>
>
> This should not happen since default_volume_type has a higher preference
> than the __DEFAULT__ type
>
>
>> However new volume creation in mystoragetype is successful.
>>
>> Need help, how can I set instance root volume storage type during its
>> deployment ?
>>
>
> My guess is that the image used has ``*cinder_img_volume_type*`` property
> set to __DEFAULT__ else there is no way cinder prefers __DEFAULT__ type
> over any other in this case.
> Also if you're using victoria release and no volume is using the
> __DEFAULT__ type then you can delete it as well.
>
>
>> Regards,
>>
>> Malik Obaid
>>
>
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