I have attached all the logs (/var/log/dmesg, /var/log/libvirtd.log, /var/log/messages, /var/log/syslog, /var/log/boot.log and info about loaded modules /proc/modules) regarding scenatios1,2,3 (please see the README file for simple explanation what is there). By the way, I have installed only dnsmasq-bin (and not dnsmasq). Have a nice day 2011/6/8 <libvirt-users-request at redhat.com>> Send libvirt-users mailing list submissions to > libvirt-users at redhat.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.redhat.com/mailman/listinfo/libvirt-users > or, via email, send a message with subject or body 'help' to > libvirt-users-request at redhat.com > > You can reach the person managing the list at > libvirt-users-owner at redhat.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of libvirt-users digest..." > > > Today's Topics: > > 1. Re: libvirt-users Digest, Vol 18, Issue 7(libvirt-bin MOSTLY > fails to create default virtual network) (m m) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 8 Jun 2011 08:28:19 -0500 > From: m m <bk.praca at gmail.com> > To: libvirt-users at redhat.com > Subject: Re: [libvirt-users] libvirt-users Digest, Vol 18, Issue > 7(libvirt-bin MOSTLY fails to create default virtual network) > Message-ID: <BANLkTikt49i78OJfzBgufoesv3C-Pjrdjw at mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > I have attached all the logs (/var/log/dmesg, /var/log/libvirtd.log, > /var/log/messages, /var/log/syslog, /var/log/boot.log and info about loaded > modules /proc/modules) regarding scenatios1,2,3 (please see the README file > for simple explanation what is there). By the way, I have installed only > dnsmasq-bin (and not dnsmasq). > Have a nice day > > 2011/6/6 <libvirt-users-request at redhat.com> > > > Send libvirt-users mailing list submissions to > > libvirt-users at redhat.com > > > > To subscribe or unsubscribe via the World Wide Web, visit > > https://www.redhat.com/mailman/listinfo/libvirt-users > > or, via email, send a message with subject or body 'help' to > > libvirt-users-request at redhat.com > > > > You can reach the person managing the list at > > libvirt-users-owner at redhat.com > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of libvirt-users digest..." > > > > > > Today's Topics: > > > > 1. libvirt-bin MOSTLY fails to create default virtual network (m > > m) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Mon, 6 Jun 2011 14:24:04 -0500 > > From: m m <bk.praca at gmail.com> > > To: libvirt-users at redhat.com > > Subject: [libvirt-users] libvirt-bin MOSTLY fails to create default > > virtual network > > Message-ID: <BANLkTinrE80HURSwJUUv28_v9HB9mRxNNw at mail.gmail.com> > > Content-Type: text/plain; charset="iso-8859-1" > > > > I have observed 3 scenarios after I reboot the host with 2 guests (which > > are > > supposed to autostart after boot/reboot of the host): > > 1. Default network is created but I can not ping guests. Gests don't have > > assigned IP address or they both have IP address 192.168.122.100. > > 2. Default network is not created. > > 3. Default netork is properly created and everything works fine. > > In each case guests are started and they work properly. Cases 1. and 2. > > happen a lot more often then case 3. > > > > My solutions: > > - When I restart libvirt-bin then everything is fine. > > - When I set 'sleep 40' in 'pre-start' section of > > /etc/init/libvirt-bin.conf > > and modify 'start on' section in the following way: > > > > start on (runlevel [2345] and net-device-up IFACE=br0) > > > > then everything works fine. > > > > > > However, none of the above solutions indeed solves the problem. Please, > let > > me know if there is solution to this problem or what are your suggestions > > regarding this issue. > > > > **** > > HOST$ uname -a > > Linux ras 2.6.32-32-server #62-Ubuntu SMP Wed Apr 20 22:07:43 UTC 2011 > > x86_64 GNU/Linux > > > > GUEST1 and GUEST2 > > $ uname -a > > Linux server1-desktop 2.6.32-32-generic #62-Ubuntu SMP Wed Apr 20 > 21:54:21 > > UTC 2011 i686 GNU/Linux > > > > HOST$ libvirtd --version > > libvirtd (libvirt) 0.7.5 > > > > My idea was that some kernel modules sometimes are loaded before > > libvirt-bin > > starts, and sometimes libvirt-bin starts earlier, or in the middle of > > loading of these modules, that is why 3 scenarios can be observed. > > That is why I have added: > > cp /proc/modules /home/wsadmin2/modules1 > > cp /proc/modules /home/wsadmin2/modules2 > > to 'pre-start' and 'post-start' parts respectively of > > /etc/init/libvirt-bin.conf. > > > > Of course, beween execution of > > - pre-start part > > - exec /usr/sbin/libvirtd -d > > - post-start part > > other kernel modules can be loaded, so we can not be sure which > additional > > modules in file 'modules2' were indeed loaded before libvirtd was > actually > > started. > > > > Here are my observations: > > Scenatio 1. > > 33 (fixed) modules were logged - call them BASE MODULES. > > > > Scenatio 2. > > Beside BASE MODULES + the following modules were loaded: > > > > > iptable_filter 1841 0 - Live 0xffffffffa007c000 > > > ip_tables 18201 1 iptable_filter, Live 0xffffffffa0172000 > > > x_tables 22361 1 ip_tables, Live 0xffffffffa0164000 > > > > Scenatio 3. > > Beside BASE MODULES + the following modules were loaded: > > > > $ diff modules1 modules2 > > 1c1,6 > > < iptable_filter 1841 0 - Live 0xffffffffa008b000 > > --- > > > xt_state 1490 14 - Live 0xffffffffa01ab000 > > > xt_tcpudp 2667 12 - Live 0xffffffffa01a5000 > > > nf_conntrack_ipv4 12742 14 - Live 0xffffffffa019b000 > > > nf_conntrack 73326 2 xt_state,nf_conntrack_ipv4, Live > 0xffffffffa017d000 > > > nf_defrag_ipv4 1481 1 nf_conntrack_ipv4, Live 0xffffffffa0177000 > > > iptable_filter 1841 1 - Live 0xffffffffa008b000 > > 3c8 > > < x_tables 22361 1 ip_tables, Live 0xffffffffa0162000 > > --- > > > x_tables 22361 3 xt_state,xt_tcpudp,ip_tables, Live 0xffffffffa0162000 > > > > Other observations: > > Scenatio 1. > > No errors in libvirtd.log > > Scenario 2. > > > > 10:06:06.980: error : networkAddIptablesRules:750 : failed to add > iptables > > rule to allow DHCP requests from 'virbr0': Invalid argument > > (...) > > 10:06:08.630: error : qemudNetworkIfaceConnect:1445 : Failed to add tap > > interface to bridge 'virbr0': No such device > > 10:06:08.630: error : qemuAutostartDomain:584 : Failed to autostart VM > > 'cluster_server1': Failed to add tap interface to bridge 'virbr0': No > such > > device > > > > 10:06:08.921: info : qemudDispatchSignalEvent:390 : Received unexpected > > signal 17 > > 10:06:08.927: debug : virExecWithHook:617 : LC_ALL=C /usr/bin/kvm -help > > 10:06:08.938: info : qemudDispatchSignalEvent:390 : Received unexpected > > signal 17 > > 10:06:09.000: error : qemudNetworkIfaceConnect:1445 : Failed to add tap > > interface to bridge 'virbr0': No such device > > 10:06:09.000: error : qemuAutostartDomain:584 : Failed to autostart VM > > 'cluster_server2': Failed to add tap interface to bridge 'virbr0': No > such > > device > > (...) > > Scenatio 3. > > No errors in libvirtd.log > > > > > > I didn't see any valuable logs in /var/log/boot.log, /var/log/messages, > > /var/log/syslog. Please let me know if you want to see them anyway or > have > > any suggestions right away. > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3/attachment.html > > > > > -------------- next part -------------- > > A non-text attachment was scrubbed... > > Name: scenario1 > > Type: application/octet-stream > > Size: 19317 bytes > > Desc: not available > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3/attachment.obj > > > > > -------------- next part -------------- > > A non-text attachment was scrubbed... > > Name: scenario2 > > Type: application/octet-stream > > Size: 8294 bytes > > Desc: not available > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3/attachment-0001.obj > > > > > -------------- next part -------------- > > A non-text attachment was scrubbed... > > Name: scenario3 > > Type: application/octet-stream > > Size: 2366 bytes > > Desc: not available > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3/attachment-0002.obj > > > > > -------------- next part -------------- > > A non-text attachment was scrubbed... > > Name: libvirt-bin.conf > > Type: application/octet-stream > > Size: 924 bytes > > Desc: not available > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3/attachment-0003.obj > > > > > > > ------------------------------ > > > > _______________________________________________ > > libvirt-users mailing list > > libvirt-users at redhat.com > > https://www.redhat.com/mailman/listinfo/libvirt-users > > > > End of libvirt-users Digest, Vol 18, Issue 7 > > ******************************************** > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://www.redhat.com/archives/libvirt-users/attachments/20110608/625b332f/attachment.html > > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: LucidClusterStack.rar > Type: application/rar > Size: 4473008 bytes > Desc: not available > URL: < > https://www.redhat.com/archives/libvirt-users/attachments/20110608/625b332f/attachment.bin > > > > ------------------------------ > > _______________________________________________ > libvirt-users mailing list > libvirt-users at redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users > > End of libvirt-users Digest, Vol 18, Issue 11 > ********************************************* >-------------- next part -------------- An HTML attachment was scrubbed... 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Chris Lalancette
2011-Jun-10 13:30 UTC
[libvirt-users] libvirt-users Digest, Vol 18, Issue 11
On 06/09/11 - 07:11:22PM, m m wrote:> I have attached all the logs (/var/log/dmesg, /var/log/libvirtd.log, > /var/log/messages, /var/log/syslog, /var/log/boot.log and info about loaded > modules /proc/modules) regarding scenatios1,2,3 (please see the README file > for simple explanation what is there). By the way, I have installed only > dnsmasq-bin (and not dnsmasq). > Have a nice dayPlease stop sending 6MB attachments out to the list; every person subscribed to the list has to download them. If you need to send someone a lot of information, upload it to a website somewhere and just send a link in email. Thanks, -- Chris Lalancette