I will double check Xen and drbd0.7 tunning. I have read some xen wikis and documentations and nothing, I asked on IRC (freenode) and they said me that have nothing to do. Anyway I will look a little more. <br><br>Thank you one more time.
<br><br><br><div><span class="gmail_quote">On 7/10/06, <b class="gmail_sendername">Lars Ellenberg</b> <<a href="mailto:Lars.Ellenberg@linbit.com">Lars.Ellenberg@linbit.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
/ 2006-07-06 13:59:15 -0300<br>\ Igor Morgado:<br>> Lars..<br>><br>> My environment "needs" of drbd8. Because live migration works flawlessly with<br>> pri/pri resources. Using sec/pri I need to do a big trip to achieve this.
<br>><br>> sleep the vm<br>> put local disk as secondary<br>> copy the vm state to remote server<br>> put remote disk as primary<br>> load the vm state.<br>><br>> This procedure takes 20-30 seconds to complish. I can even keep the session
<br>> (because tcp/ip timeout)<br>><br>> With pri/pri I do the following:<br>> put remote disk as primary<br>> start xen live migration<br>> put local disk as secondary<br>><br>> The procedure takes 1-3 seconds, and I have only 1 second of delay in session
<br>> (most of users cannot even notice the migration).<br><br>are you sure that the latest xen does not behave better with drbd-0.7?<br>I think there have been some adjustments to xen as to when exactly in<br>the migration process it needs the "shared" block device.
<br><br>> My question is:<br>><br>> Will be any compatibility with drbd7 and 8? there is a way to migrate drbd7<br>> metadata to 8 without data loss?<br><br>you will be able to migrate drbd 0.7 -> drbd 8 without data loss,
<br>but probably you'd need a downtime. the drbdmeta command is able to<br>convert meta data of different versions. but currently drbd8 and drbd0.7<br>don't understand each other on the wire, so you cannot do roling<br>upgrades. we did some preparations for a compatibility layer within the
<br>drbd communications, but we did not implement it at all (yet).<br><br>--<br>: Lars Ellenberg Tel +43-1-8178292-0 :<br>: LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :
<br>: Schoenbrunner Str. 244, A-1120 Vienna/Europe <a href="http://www.linbit.com">http://www.linbit.com</a> :<br>__<br>please use the "List-Reply" function of your email client.<br>_______________________________________________
<br>drbd-user mailing list<br><a href="mailto:drbd-user@lists.linbit.com">drbd-user@lists.linbit.com</a><br><a href="http://lists.linbit.com/mailman/listinfo/drbd-user">http://lists.linbit.com/mailman/listinfo/drbd-user</a>
<br></blockquote></div><br>