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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>Dear libvirt experts</span>，<span lang=EN-US style='font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US style='font-family:"Times New Roman",serif'>I have add some patch as follow.this two patch add buffer size to avoid to produce “nl_recv returned with error:No buffer space available”<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-family:"Times New Roman",serif'><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-family:"Times New Roman",serif'>libvirt-nodedev-Increase-the-netlink-socket-buffer-size-to-t.patch<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-family:"Times New Roman",serif'><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US style='font-family:"Times New Roman",serif'>libvirt-util-increase-libnl-buffer-size.patch<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>but as I set some configuration in /etc/libvirt/libvitd.conf as follows<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'># Logging level: 4 errors, 3 warnings, 2 information, 1 debug<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>log_level =2<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'># Multiple outputs can be defined, they just need to be separated by spaces.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'># e.g. to log all warnings and errors to syslog under the libvirtd ident:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>log_outputs="2:syslog:libvirtd"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>when I input “udevadm trigger” command<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>[root@localhost ~]# vi /etc/libvirt/libvirtd.conf<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>[root@localhost ~]# systemctl restart libvirtd<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>[root@localhost ~]# udevadm trigger<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>[root@localhost ~]# udevadm trigger<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>[root@localhost ~]# udevadm trigger<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>[root@localhost ~]#<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>then will produce “nl_recv returned with error:No buffer space available”<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>[root@localhost ~]# tail -f /var/log/messages | grep buffer<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>Sep 2 22:44:00 localhost libvirtd: 4004: error : virNetlinkEventCallback:699 : nl_recv returned with error: No buffer space available<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>Sep 2 23:11:33 localhost libvirtd: 4004: error : virNetlinkEventCallback:699 : nl_recv returned with error: No buffer space available<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>Sep 2 23:11:45 localhost libvirtd: 4004: error : virNetlinkEventCallback:699 : nl_recv returned with error: No buffer space available<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>So my question is:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>When input “udevadm trigger” in terminal, if setting log_level and log_outputs="2:syslog:libvirtd",how to avoid to produce “error virNetlinkEventCallback:699 : nl_recv returned with error: No buffer space available” log information?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>I am looking forward to your reply.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><div class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='font-family:"Times New Roman",serif'><hr size=3 width="100%" align=center></span></div><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>Best Regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>Jidong Xia<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Times New Roman",serif'>China Mobile (Suzhou) Software Technology Company.cloud computing product department<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Times New Roman",serif;color:black;background:white'>Tel: (+86) 18896726087</span><span lang=EN-US style='font-family:"Times New Roman",serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Times New Roman",serif;color:black;background:white'>E-Mail</span><span style='font-size:10.0pt;font-family:"微软雅黑",sans-serif;color:black;background:white'>：</span><span lang=EN-US style='font-size:10.0pt;font-family:"Times New Roman",serif;color:black;background:white'><a href="mailto:xiajidong@cmss.chinamobile.com">xiajidong@cmss.chinamobile.com</a></span><span lang=EN-US style='font-family:"Times New Roman",serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>