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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Is it possible that a developer could comment on the mechanics of the online migration algorithm so that I know where to troubleshoot next?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I did create a rudimentary test in Debian which would write alternate patterns of data while I migrated VMs back and forth. Between each pattern it will test the file to verify that it contains everything it should. This all seems to work fine and the problem isn’t reproducible. Could the problem be OS-specific? I’m not a developer but I would guess that the migration algorithm would be lower-level than this?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Is it possible that the corruption could affect Windows machines while they’re under load and while they’re being migrated? It seems like it’s a factor of those three things. I don’t think it’s purely load as they do receive much higher load when e.g. at 03:00 all Windows virtual machines are subject to new updates. This doesn’t cause a problem; it only seems to be if I move a disk while it’s busy. Everything will tick along fine and the moment I have another corrupt VM I ask myself “what happened last?” and the answer is “I moved it” or “I changed file type”.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Any ideas?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Chris<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> pve-user [mailto:pve-user-bounces@pve.proxmox.com] <b>On Behalf Of </b>Chris Murray<br><b>Sent:</b> 05 November 2014 22:34<br><b>To:</b> Yannis Milios; pve-user@pve.proxmox.com<br><b>Subject:</b> Re: [PVE-User] NTFS/Windows Server corruption after successful livestorage migration<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Yannis,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I can try that, but what is it expected that either result will prove?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If the VM is corrupt, what will that prove? What is the likely cause of the problem?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If the VM is not corrupt, what will that prove?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Chris<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Yannis Milios [<a href="mailto:yannis.milios@gmail.com">mailto:yannis.milios@gmail.com</a>] <br><b>Sent:</b> 05 November 2014 20:44<br><b>To:</b> <a href="mailto:pve-user@pve.proxmox.com">pve-user@pve.proxmox.com</a>; Chris Murray<br><b>Subject:</b> Re: [PVE-User] NTFS/Windows Server corruption after successful live storage migration<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p>hello,<o:p></o:p></p><p>Never tried online storage migration but what happens if you do the following:<o:p></o:p></p><p>1. create a windows vm in raw format, on local disk storage(not nfs mount).<o:p></o:p></p><p>2. Start installing updates on windows and initiate online storage migration to the nfs mount in qcow2 format.<o:p></o:p></p><p>Do you experience the same issue?<o:p></o:p></p><p>referance: <a href="https://pve.proxmox.com/wiki/Storage_Migration">https://pve.proxmox.com/wiki/Storage_Migration</a><o:p></o:p></p><div class=MsoNormal align=center style='text-align:center'><hr size=1 width="100%" noshade style='color:#A0A0A0' align=center></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>No virus found in this message.<br>Checked by AVG - <a href="http://www.avg.com">www.avg.com</a><br>Version: 2015.0.5315 / Virus Database: 4189/8510 - Release Date: 11/04/14<o:p></o:p></p><div class=MsoNormal align=center style='text-align:center'><hr size=1 width="100%" noshade style='color:gray' align=center></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>No virus found in this message.<br>Checked by AVG - <a href="http://www.avg.com">www.avg.com</a><br>Version: 2015.0.5315 / Virus Database: 4189/8510 - Release Date: 11/04/14<o:p></o:p></p></div></body></html>