<div dir="ltr"><div><div><div>Hi,<br><br></div> 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.<br><br></div> I see both pools:<br> cloud:~ # cinder get-pools <br><br>+----------+---------------------------------------------+<br>| Property | Value |<br>+----------+---------------------------------------------+<br>| name | cloudvolume@iscsi-cloudvolume#iscsi |<br>+----------+---------------------------------------------+<br>+----------+---------------------------------------+<br>| Property | Value |<br>+----------+---------------------------------------+<br>| name | rbdvolume@rbd-cephvolume#rbd |<br>+----------+---------------------------------------+<br><br></div>running:<br><div><div> #cinder migrate <vol_id> rbdvolume@rbd-cephvolume#rbd<div><div> I see this error in cinder-schedule.log<br><br> 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@rbd-cephvolume#rbd<br><br></div><div>Then I checked using retype instead of migrate for different backend types (iscsi and rbd):<br><br>#cinder retype <vol_id> rbd<br><br></div><div>show this log:<br><br>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.<br><br></div><div>using --migration-policy on-demand flag there is no error in scheduler log, but there is no migration either.<br><br></div><div>Any Idea?<br><br></div><div>Regards, I<br></div><div>-- <br><div class="gmail_signature"><div dir="ltr">############################################################################<br>Iban Cabrillo Bartolome<br>Instituto de Fisica de Cantabria (IFCA)<br>Santander, Spain<br>Tel: +34942200969<div>PGP PUBLIC KEY: <a href="http://pgp.mit.edu/pks/lookup?op=get&search=0xD9DF0B3D6C8C08AC" target="_blank">http://pgp.mit.edu/pks/lookup?op=get&search=0xD9DF0B3D6C8C08AC</a><br>############################################################################<br><span style="color:rgb(255,255,204)">Bertrand Russell:</span><br style="color:rgb(255,255,204)"><i style="color:rgb(255,255,204)">"El problema con el mundo es que los estúpidos están seguros de todo y los inteligentes están llenos de dudas</i><span style="color:rgb(255,255,204)">"</span><br></div></div></div>
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