Open Stack

On Thu, Feb 18, 2021 at 8:51 PM Malik Obaid <malikobaidadil at gmail.com>
wrote:

> 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.
>

That looks like the logical conclusion. I'm not very familiar with horizon
code but they seem to be hardcoding the __DEFAULT__ type somewhere which
will break if anyone deletes that type. Looks like a bug in [horizon]


>
> 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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