<html><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px"><div>Hello John, <br></div><div dir="ltr" id="yui_3_16_0_1_1425312238526_17094">Thanks for all your valuable inputs. <br></div><div id="yui_3_16_0_1_1425312238526_17096" dir="ltr">I had missed these configuration. Hope these configs mentioned below will be useful for others who are trying out live migration. <br></div><div id="yui_3_16_0_1_1425312238526_17098" dir="ltr"><br></div><div id="yui_3_16_0_1_1425312238526_18020" dir="ltr">1. force_config_drive = none , otherwise it was giving error. <br></div><div id="yui_3_16_0_1_1425312238526_12509" dir="ltr">2. allow_migrate_to_same_host = False<br style="" class="">allow_resize_to_same_host = False<br style="" class=""></div><div id="yui_3_16_0_1_1425312238526_12510" dir="ltr"><br></div><div id="yui_3_16_0_1_1425312238526_18021" dir="ltr">3. set proper cpu mode as below <br></div><div id="yui_3_16_0_1_1425312238526_18022" dir="ltr">cpu_mode = custom<br style="" class="">cpu_model = Nehalem<br style="" class="">virt_type = kvm<br style="" class=""></div><div id="yui_3_16_0_1_1425312238526_18023" dir="ltr"><br></div><div id="yui_3_16_0_1_1425312238526_18024" dir="ltr">Now I am able to make normal migration working fine, from one host to another. <br></div><div id="yui_3_16_0_1_1425312238526_17080" dir="ltr"><br></div><div id="yui_3_16_0_1_1425312238526_17078" dir="ltr">When I try with live migration with block-migration, its failing for not getting proper host key verification ,, <br></div><div id="yui_3_16_0_1_1425312238526_17076" dir="ltr">I am looking into it. I have shared keys proper I am able to ssh to-fro host nodes using passwordless ssh. <br></div><div id="yui_3_16_0_1_1425312238526_20851" dir="ltr">no clue right now. <br></div><div id="yui_3_16_0_1_1425312238526_17084" dir="ltr"><br></div><div id="yui_3_16_0_1_1425312238526_17086" dir="ltr">error log <br></div><div id="yui_3_16_0_1_1425312238526_17088" dir="ltr">------------------</div><div id="yui_3_16_0_1_1425312238526_18950" dir="ltr">[[01;31mLive Migration fa ilure: operation failed: Failed to connect to remote libvirt URI qemu+ssh://stack@celestial8/</div><div id="yui_3_16_0_1_1425312238526_19014" style="" class="" dir="ltr"><wbr style="" class="">system: Cannot recv data: Host key verifica tion failed.: Connection reset by peer^[[00m<br style="" class=""><br style="" class=""><br style="" class=""> on thread notification^[[00m ^[[00;33mfrom (pid=8953) thread_finished /opt/stack/nova/nova/virt/<wbr style="" class="">libvirt/driver.py:5638^[[00m<br style="" class="">270370 Traceback (most recent call last):<br style="" class="">270371 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/eventlet/hubs/<wbr style="" class="">hub.py", line 457, in fire_timers<br style="" class="">270372 timer()<br style="" class="">270373 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/eventlet/hubs/<wbr style="" class="">timer.py", line 58, in __call__<br style="" class="">270374 cb(*args, **kw)<br style="" class="">270375 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/eventlet/event.<wbr style="" class="">py", line 168, in _do_send<br style="" class="">270376 waiter.switch(result)<br style="" class="">270377 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/eventlet/<wbr style="" class="">greenthread.py", line 214, in main<br style="" class="">270378 result = function(*args, **kwargs)<br style="" class="">270379 File "/opt/stack/nova/nova/virt/<wbr style="" class="">libvirt/driver.py", line 5435, in _live_migration_operation<br style="" class="">270380 instance=instance)<br style="" class="">270381 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/oslo_utils/<wbr style="" class="">excutils.py", line 82, in __exit__<br style="" class="">270382 six.reraise(self.type_, self.value, self.tb)<br style="" class="">270383 File "/opt/stack/nova/nova/virt/<wbr style="" class="">libvirt/driver.py", line 5404, in _live_migration_operation<br style="" class="">270384 CONF.libvirt.live_migration_<wbr style="" class="">bandwidth)<br style="" class="">270385 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/eventlet/tpool.<wbr style="" class="">py", line 183, in doit<br style="" class="">270386 result = proxy_call(self._autowrap, f, *args, **kwargs)<br style="" class="">270387 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/eventlet/tpool.<wbr style="" class="">py", line 141, in proxy_call<br style="" class="">270388 rv = execute(f, *args, **kwargs)<br style="" class="">270389 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/eventlet/tpool.<wbr style="" class="">py", line 122, in execute<br style="" class="">270390 six.reraise(c, e, tb)<br style="" class="">270391 File "/usr/local/lib/python2.7/<wbr style="" class="">dist-packages/eventlet/tpool.<wbr style="" class="">py", line 80, in tworker<br style="" class="">270392 rv = meth(*args, **kwargs)<br style="" class="">270393 File "/usr/lib/python2.7/dist-<wbr style="" class="">packages/libvirt.py", line 1582, in migrateToURI2<br style="" class="">270394 if ret == -1: raise libvirtError ('virDomainMigrateToURI2() failed', dom=self)<br style="" class="">270395 libvirtError: operation failed: Failed to connect to remote libvirt URI qemu+ssh://stack@celestial8/<wbr style="" class="">system: Cannot recv data: Host key v erification failed.: Connection reset by peer<br style="" class=""><div id="yui_3_16_0_1_1425312238526_19015">@ <wbr style="" class=""> <wbr style="" class=""> <br></div><div id="yui_3_16_0_1_1425312238526_19016">-----</div><div id="yui_3_16_0_1_1425312238526_22275"><br></div></div><div id="yui_3_16_0_1_1425312238526_18952" dir="ltr"><br></div><div id="yui_3_16_0_1_1425312238526_9766"><span></span></div><div id="yui_3_16_0_1_1425312238526_9740"> </div><div id="yui_3_16_0_1_1425312238526_9728"><div id="yui_3_16_0_1_1425312238526_9727">
<br>Regards
<br>Neelu</div></div> <div class="qtdSeparateBR"><br><br></div><div style="display: block;" class="yahoo_quoted"> <div style="font-family: Helvetica Neue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;"> <div dir="ltr"> <font face="Arial" size="2"> On Friday, 27 February 2015 8:09 PM, somshekar kadam <som_kadam@yahoo.co.in> wrote:<br> </font> </div> <br><br> <div class="y_msg_container"><div id="yiv8916032312"><div><div style="color:#000;background-color:#fff;font-family:Helvetica Neue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;">Have done the same configs as mentioned in above thread links for libvirt and nova.conf. <br clear="none"><div><span></span></div><div id="yiv8916032312yui_3_16_0_1_1425020392503_80610"> </div><div id="yiv8916032312yui_3_16_0_1_1425020392503_81925"><div id="yiv8916032312yui_3_16_0_1_1425020392503_81924">
<br clear="none">Regards
<br clear="none">Neelu</div></div> <div class="yiv8916032312qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv8916032312yahoo_quoted" style="display:block;"> <div style="font-family:Helvetica Neue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;"> <div class="yiv8916032312yqt9000026392" id="yiv8916032312yqtfd03473"><div dir="ltr"> <font face="Arial" size="2"> On Friday, 27 February 2015 8:07 PM, somshekar kadam <som_kadam@yahoo.co.in> wrote:<br clear="none"> </font> </div> <br clear="none"><br clear="none"> <div class="yiv8916032312y_msg_container"><div id="yiv8916032312"><div><div style="color:#000;background-color:#fff;font-family:Helvetica Neue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;"><div class="yiv8916032312" id="yiv8916032312yui_3_16_0_1_1425020392503_68109" style=""><div class="yiv8916032312" style=""><div class="yiv8916032312" style="">John, your patch is in the mainline now. I have tested it. Not sure what is the thing I am missing<br class="yiv8916032312" style="" clear="none"></div><div>I have specified cpu model none and even tried setting cpu mode custom also and model kvm64. <br clear="none"></div><div><br clear="none"></div><div dir="ltr">I am getting below error on live migration. <br clear="none"></div><br class="yiv8916032312" style="" clear="none"></div>error log<br class="yiv8916032312" style="" clear="none">----<br class="yiv8916032312" style="" clear="none">Remote error: libvirtError Requested operation is not valid: no CPU model
specified [u’Traceback (most recent call last):\n’, u’
File
“/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py”,
line 142, in _dispatch_and_reply\n executo<br class="yiv8916032312" style="" clear="none">
Code<br class="yiv8916032312" style="" clear="none">
500<br class="yiv8916032312" style="" clear="none">
Details<br class="yiv8916032312" style="" clear="none">
File “/opt/stack/nova/nova/conductor/manager.py”, line 606, in
_live_migrate block_migration, disk_over_commit) File
“/opt/stack/nova/nova/conductor/tasks/live_migrate.py”, line
194, in execute return task.execute() File
“/opt/stack/nova/nova/conductor/tasks/live_migrate.py”, line 62,
in execute self._check_requested_destination() File
“/opt/stack/nova/nova/conductor/tasks/live_migrate.py”, line
100, in _check_requested_destination
self._call_livem_checks_on_host(self.destination) File
“/opt/stack/nova/nova/conductor/tasks/live_migrate.py”, line
142, in _call_livem_checks_on_host destination, self.block_migration,
self.disk_over_commit) File
“/opt/stack/nova/nova/compute/rpcapi.py”, line 391, in
check_can_live_migrate_destination disk_over_commit=disk_over_commit) File
“/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/client.py”,
line 156, in call retry=self.retry) File
“/usr/local/lib/python2.7/dist-packages/oslo_messaging/transport.py”,
line 90, in _send timeout=timeout, retry=retry) File
“/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py”,
line 417, in send retry=retry) File
“/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py”,
line 408, in _send raise result<br class="yiv8916032312" style="" clear="none">
Created<br class="yiv8916032312" style="" clear="none">--------------------<br class="yiv8916032312" style="" clear="none"><br class="yiv8916032312" style="" clear="none"></div>debug log <br class="yiv8916032312" style="" clear="none">---------------<br class="yiv8916032312" style="" clear="none">DEBUG (shell:803) Live migration of instance 477e8963-aadf-4dc7-b26f-<div class="yiv8916032312" dir="ltr" id="yiv8916032312yui_3_16_0_1_1425020392503_68110" style=""> f6e9332dd33b to host celestial5 failed (HTTP 500) (Request-ID: req-7973edbc-8844-41c5-926a- 9f5e7cee62f2)<br class="yiv8916032312" style="" clear="none">Traceback (most recent call last):<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ shell.py", line 800, in main<br class="yiv8916032312" style="" clear="none"> OpenStackComputeShell().main( argv)<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ shell.py", line 730, in main<br class="yiv8916032312" style="" clear="none"> args.func(self.cs, args)<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/v1_1/ shell.py", line 3001, in do_live_migration<br class="yiv8916032312" style="" clear="none"> args.disk_over_commit)<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/v1_1/ servers.py", line 344, in live_migrate<br class="yiv8916032312" style="" clear="none"> disk_over_commit)<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/v1_1/ servers.py", line 1124, in live_migrate<br class="yiv8916032312" style="" clear="none"> 'disk_over_commit': disk_over_commit})<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/v1_1/ servers.py", line 1240, in _action<br class="yiv8916032312" style="" clear="none"> return self.api.client.post(url, body=body)<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ client.py", line 490, in post<br class="yiv8916032312" style="" clear="none"> return self._cs_request(url, 'POST', **kwargs)<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ client.py", line 465, in _cs_request<br class="yiv8916032312" style="" clear="none"> resp, body = self._time_request(url, method, **kwargs)<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ client.py", line 439, in _time_request<br class="yiv8916032312" style="" clear="none"> resp, body = self.request(url, method, **kwargs)<br class="yiv8916032312" style="" clear="none"> File "/usr/local/lib/python2.7/ dist-packages/novaclient/ client.py", line 433, in request<br class="yiv8916032312" style="" clear="none"> raise exceptions.from_response(resp, body, url, method)<br class="yiv8916032312" style="" clear="none">ClientException: Live migration of instance 477e8963-aadf-4dc7-b26f- f6e9332dd33b to host celestial5 failed (HTTP 500) (Request-ID: req-7973edbc-8844-41c5-926a- 9f5e7cee62f2)<br class="yiv8916032312" style="" clear="none">ERROR (ClientException): Live migration of instance 477e8963-aadf-4dc7-b26f- f6e9332dd33b to host celestial5 failed (HTTP 500) (Request-ID: req-7973edbc-8844-41c5-926a- 9f5e7cee62f2)<br class="yiv8916032312" style="" clear="none">----------------------<br class="yiv8916032312" style="" clear="none"></div><br class="yiv8916032312" style="" clear="none"><div id="yiv8916032312yui_3_16_0_1_1425020392503_75197"><span></span>Regards
<br clear="none"></div><div id="yiv8916032312yui_3_16_0_1_1425020392503_68020">Neelu</div> <div class="yiv8916032312qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv8916032312yqt8097918142" id="yiv8916032312yqt12140"><div class="yiv8916032312yahoo_quoted" style="display:block;"> <div style="font-family:Helvetica Neue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px;"> <div dir="ltr"> <font face="Arial" size="2"> On Thursday, 26 February 2015 8:21 PM, John Griffith <john.griffith@solidfire.com> wrote:<br clear="none"> </font> </div> <br clear="none"><br clear="none"> <div class="yiv8916032312y_msg_container"><div id="yiv8916032312"><div><div dir="ltr"><div class="yiv8916032312gmail_default" style="font-family:monospace, monospace;"><br clear="none"></div><div class="yiv8916032312gmail_extra"><br clear="none"><div class="yiv8916032312gmail_quote">On Thu, Feb 26, 2015 at 7:07 AM, somshekar kadam <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:som_kadam@yahoo.co.in" target="_blank" href="mailto:som_kadam@yahoo.co.in">som_kadam@yahoo.co.in</a>></span> wrote:<br clear="none"><blockquote class="yiv8916032312gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex;"><div class="yiv8916032312yqt9789273494" id="yiv8916032312yqt26749"><div><div style="color:rgb(0,0,0);font-family:'Helvetica Neue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;font-size:16px;background-color:rgb(255,255,255);"><div>First of all thanks for quick reply. <br clear="none"></div><div dir="ltr">Documentation does not mention much about <span><strong>Volume-backed live migration. <br clear="none"></strong></span></div><div dir="ltr"><span><strong>Is it tested, I mean supported and working. <br clear="none"></strong></span></div><div dir="ltr"><span><strong>I will try </strong></span><span><strong>Block live migration as no storage is required. <br clear="none"></strong></span></div><div><span></span></div><div> </div><div><div>
<br clear="none">Regards
<br clear="none">Neelu</div></div><span class="yiv8916032312"> </span><div><br clear="none"><br clear="none"></div><div style="display:block;"> <div style="font-family:'Helvetica Neue-Light', 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;font-size:16px;"> <div style="font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;font-size:16px;"> <div dir="ltr"> <font face="Arial"> On Thursday, 26 February 2015 7:13 PM, Robert van Leeuwen <<a rel="nofollow" shape="rect" ymailto="mailto:Robert.vanLeeuwen@spilgames.com" target="_blank" href="mailto:Robert.vanLeeuwen@spilgames.com">Robert.vanLeeuwen@spilgames.com</a>> wrote:<br clear="none"> </font> </div> <br clear="none"><br clear="none"> <div><div>> Is the Live Migration of VMs even without shared storage supported in Openstack now.<br clear="none">> If yes is there any document for the same.</div><br clear="none"><br clear="none">Wel, depends on what you call "supported".<br clear="none">Yes, it is possible. <br clear="none">Will it always work? Probably not until you look at the bugs below.<br clear="none">They have been fixed recently but they might not be merged with the version you are running: <br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="https://bugs.launchpad.net/nova/+bug/1270825">https://bugs.launchpad.net/nova/+bug/1270825</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="https://bugs.launchpad.net/nova/+bug/1082414">https://bugs.launchpad.net/nova/+bug/1082414</a><br clear="none"><br clear="none">There might be more issues but I hit the ones mentioned above.<br clear="none">Have a look at the docs to configure it:<br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://docs.openstack.org/admin-guide-cloud/content/section_configuring-compute-migrations.html">http://docs.openstack.org/admin-guide-cloud/content/section_configuring-compute-migrations.html</a><br clear="none"><br clear="none">Cheers,<br clear="none">Robert van Leeuwen<div><br clear="none"><br clear="none"><br clear="none"><br clear="none"> <br clear="none"><br clear="none"><br clear="none"><br clear="none"><br clear="none"><br clear="none"><br clear="none"><br clear="none"><br clear="none"><br clear="none"><br clear="none"></div><br clear="none"><br clear="none"></div> </div> </div> </div> </div></div></div><br clear="none">_______________________________________________<br clear="none">
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<br clear="none"></blockquote></div><br clear="none"></div><div class="yiv8916032312gmail_extra"><div class="yiv8916032312gmail_default" style="font-family:monospace, monospace;">It's dated and getting the patches backported has proven to take forever, but I did a write up and testing on this a while back [1]. Should still be accurate.</div><div class="yiv8916032312gmail_default" style="font-family:monospace, monospace;"><br clear="none"></div><div class="yiv8916032312gmail_default" style="font-family:monospace, monospace;">Thanks,</div><div class="yiv8916032312gmail_default" style="font-family:monospace, monospace;">John</div><div class="yiv8916032312gmail_default" style="font-family:monospace, monospace;"><br clear="none"></div><div class="yiv8916032312gmail_default" style="font-family:monospace, monospace;">[1]: <a rel="nofollow" shape="rect" target="_blank" href="https://griffithscorner.wordpress.com/2014/12/08/openstack-live-migration-with-cinder-backed-instances/">https://griffithscorner.wordpress.com/2014/12/08/openstack-live-migration-with-cinder-backed-instances/</a></div></div></div></div></div><br clear="none"><br clear="none"></div> </div> </div> </div></div> </div></div></div><br clear="none"><br clear="none"></div> </div></div><div class="yiv8916032312yqt9000026392" id="yiv8916032312yqtfd89965"> </div></div><div class="yiv8916032312yqt9000026392" id="yiv8916032312yqtfd02262"> </div></div><div class="yiv8916032312yqt9000026392" id="yiv8916032312yqtfd74555"> </div></div></div></div><br><br></div> </div> </div> </div> </div></body></html>