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Hi,

 looking at cinder.conf

# Default volume type to use (string value)
default_volume_type=rbd

[rbd-cephvolume]
volume_backend_name=rbd
volume_driver = cinder.volume.drivers.rbd.RBDDriver
rbd_pool = volumes
rbd_ceph_conf = /etc/ceph/ceph.conf
rbd_flatten_volume_from_snapshot = false
rbd_max_clone_depth = 5
rbd_store_chunk_size = 4
rados_connect_timeout = -1
glance_api_version = 2

regards, I

2016-05-04 15:13 GMT+02:00 Avishay Traeger <avishay at stratoscale.com>:

> How is the volume's volume-type defined?
>
> On Wed, May 4, 2016 at 1:20 PM, Iban Cabrillo <cabrillo at ifca.unican.es>
> wrote:
>
>> Hi,
>>
>>    I am trying to move block storage between servers with different
>> storage types, one using iscsi and the other rbd, individually they work
>> fine. nova version is 2:12.0.2-0ubuntu1~cloud0. Of course I have checked
>> with attached and detached blocks for these tests.
>>
>>   I see both pools:
>>   cloud:~ # cinder get-pools
>>
>> +----------+---------------------------------------------+
>> | Property |                    Value                    |
>> +----------+---------------------------------------------+
>> |   name   | cloudvolume at iscsi-cloudvolume#iscsi |
>> +----------+---------------------------------------------+
>> +----------+---------------------------------------+
>> | Property |                 Value                 |
>> +----------+---------------------------------------+
>> |   name   | rbdvolume at rbd-cephvolume#rbd |
>> +----------+---------------------------------------+
>>
>> running:
>>  #cinder migrate <vol_id>  rbdvolume at rbd-cephvolume#rbd
>>   I see this error in cinder-schedule.log
>>
>>   2016-05-04 10:32:18.397 28665 ERROR cinder.scheduler.manager
>> [req-609fb633-6c1d-419b-a0d7-193d10a0732a 6e57d91da967475b887ef485ca4db611
>> 276c19f252d24f0ebe0aa9ff39307f56 - - -] Failed to
>> schedule_migrate_volume_to_host: No valid host was found. Cannot place
>> volume cc23af33-586c-4e0d-b248-127aef26acfd on rbdvolume at rbd-cephvolume
>> #rbd
>>
>> Then I checked using retype instead of migrate for different backend
>> types (iscsi and rbd):
>>
>> #cinder retype <vol_id> rbd
>>
>> show this log:
>>
>> 2016-05-04 10:45:04.506 28665 ERROR cinder.scheduler.manager
>> [req-5c7066bf-6fb7-484c-9c95-25cd9508f381 6e57d91da967475b887ef485ca4db611
>> 276c19f252d24f0ebe0aa9ff39307f56 - - -] Could not find a host for volume
>> cc23af33-586c-4e0d-b248-127aef26acfd with type
>> cc8705d5-98cb-4071-bd63-7440a5f95138.
>>
>> using  --migration-policy on-demand flag there is no error in scheduler
>> log, but there is no migration either.
>>
>> Any Idea?
>>
>> Regards, I
>> --
>>
>> ############################################################################
>> Iban Cabrillo Bartolome
>> Instituto de Fisica de Cantabria (IFCA)
>> Santander, Spain
>> Tel: +34942200969
>> PGP PUBLIC KEY:
>> http://pgp.mit.edu/pks/lookup?op=get&search=0xD9DF0B3D6C8C08AC
>>
>> ############################################################################
>> Bertrand Russell:
>> *"El problema con el mundo es que los estúpidos están seguros de todo y
>> los inteligentes están llenos de dudas*"
>>
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>>
>
>
> --
> *Avishay Traeger, PhD*
> *System Architect*
>
> Mobile: +972 54 447 1475
> E-mail: avishay at stratoscale.com
>
>
>
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>



-- 
############################################################################
Iban Cabrillo Bartolome
Instituto de Fisica de Cantabria (IFCA)
Santander, Spain
Tel: +34942200969
PGP PUBLIC KEY:
http://pgp.mit.edu/pks/lookup?op=get&search=0xD9DF0B3D6C8C08AC
############################################################################
Bertrand Russell:
*"El problema con el mundo es que los estúpidos están seguros de todo y los
inteligentes están llenos de dudas*"
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