<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-IE>Hi All,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-IE>I would really appreciate some guidance on migrate volume(storage-assisted volume migration). I have a multi backend environment where each volume type has a volume_backend_name extra spec. When I do a migrate to move my volume from one backend(host) to another it fails saying there are no hosts available. On tracing the issue I see the volume_backend_name is the problem. The value of volume_backend_name will always be different from source to target, but openstack blocks the operation from proceeding because of this difference. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-IE><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-IE>From the logs…<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-IE>2014-06-04 07:35:03.696 30454 INFO cinder.openstack.common.scheduler.filters.capabilities_filter [req-bebd425b-36bc-43df-9372-b38b803869ec None] extra_spec requirement 'VMAX_FC_SILVER' does not match 'VMAX_FC_GOLD'<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-IE><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-IE>Thank you in advance<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-IE>Helen<o:p></o:p></span></p></div></body></html>