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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>Kernel 5.9 and 6.4 (2.6.32-358) has proper built in support for Hyper-V<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>All you need to do is:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>Boot into the old kernel<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>Remove the old Hyper-V components as follows:<o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt'><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:72.0pt'><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>Execute the following steps in the bash shell.<o:p></o:p></span></i></p><p class=MsoNormal style='margin-left:72.0pt'><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>1. First, execute:<o:p></o:p></span></i></p><p class=MsoNormal style='margin-left:72.0pt'><b><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>rpm –qa | grep microsoft<o:p></o:p></span></i></b></p><p class=MsoNormal style='margin-left:108.0pt'><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>Example:<o:p></o:p></span></i></p><p class=MsoNormal style='margin-left:108.0pt'><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>On a RHEL 5.8 system, you will see the following:<o:p></o:p></span></i></p><p class=MsoNormal style='margin-left:108.0pt'><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'># rpm –qa | grep microsoft<o:p></o:p></span></i></p><p class=MsoNormal style='margin-left:108.0pt'><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>kmod-microsoft-hyper-v-3.4-1.20120727<o:p></o:p></span></i></p><p class=MsoNormal style='margin-left:108.0pt'><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>microsoft-hyper-v-3.4.20120727<o:p></o:p></span></i></p><p class=MsoNormal style='margin-left:72.0pt'><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>2. Next, execute:<o:p></o:p></span></i></p><p class=MsoNormal style='margin-left:72.0pt'><b><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>rpm –e microsoft-hyper-v-</span></i></b><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'><version string from step 1> <b>kmod-microsoft-hyper-v-</b><version string from step 1><o:p></o:p></span></i></p><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'><o:p> </o:p></span></i></b></p><p class=MsoNormal><b><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'> </span></i></b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>Then reboot into the new kernel 2.6.32-358<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>You can then add a NON-LEGACY network card and have a much faster network stack. Give the new card the same Virtual MAC as the old card and there are no config changes needed either</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D;mso-fareast-language:EN-US'><o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D'>Jason Ozin<o:p></o:p></span></b></p></div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#0D0D0D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> blueonyx-bounces@mail.blueonyx.it [mailto:blueonyx-bounces@mail.blueonyx.it] <b>On Behalf Of </b>blueonyx@larsi.de<br><b>Sent:</b> 29 March 2013 16:52<br><b>To:</b> blueonyx@blueonyx.it<br><b>Subject:</b> [BlueOnyx:12643] Urgent Hyper-V problem - please help :-)<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>Hello,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>I did a yum update on a customers server and after that there is no network connection.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>I read all the issues with hyper-v and sometime ago Michael noticed a problem with irqbalancing on this server. But this time "service irqbalancing stop" did not change anything.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>All solutions point me to boot an older kernel, but I can't do this. Everytime I boot the machine, it allways go to the last kernel and changing the grub.conf only results in a broken server, which won't boot anymore.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>Does anyone has an idea for me? I can boot the server in kernel 2.6.32-279.5.1.el6.i686.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>Thanks in advance.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'>Lars.<o:p></o:p></span></p></div></div></body></html>