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[libvirt-users] Fwd problem with libvirt
by rakshith h p 23 Jan '13

23 Jan '13

---------- Forwarded message ---------- From: "rakshith h p" <hpr3929(a)gmail.com> Date: 22 Jan 2013 22:10 Subject: problem with libvirt To: <berrange(a)redhat.com> Cc: HI, i'm rakshith from bangalore. I'm using libvirt in one of my work. I have a problem in using it.So i would request your guidance. I have a controller which uses libvirt to establish the connection to the managed nodes. After the connection is successful, if the network goes down, the control will indefinitely wait inside the libvirt mod functions. It will come out only after the network is back and required data is obtained. In this case i need to add time out and get the control back once the data is not available and throw an exception. Can u please tell if there is any way i can do it.Thanks in advance -- Thanks and regards Rakshith H P Mobile - +919844303929

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[libvirt-users] Question about blkiotune.device_weight
by hzguanqiang 22 Jan '13

22 Jan '13

Hi, Hu Tao I noticed that in your patch about blkiotune.device_weight, You set the device blkio weight value between 100 and 1000. But from the kernel document, I see that the blkio weight can be set from 10 to 1000. Why do you limit the weight minimum to 100 rather than 10 ? Looking forward your explanation, thanks! -------------- Best regards! GuanQiang 2013-01-18

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[libvirt-users] error on startup
by Bryan D. Payne 22 Jan '13

22 Jan '13

I'm running libvirt 1.0.1 and qemu 1.3. I see the following error of libvirtd startup: 2013-01-19 04:51:06.183+0000: 1459: error : virCommandWait:2287 : internal error Child process (LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/ /usr/bin/kvm -help) unexpected exit status 1 This is indeed what the return code seems to be for that command. This this just a version issue with libvirt and qemu or ?? root@host:~# kvm -help usage: qemu-x86_64 [options] program [arguments...] Linux CPU emulator (compiled for x86_64 emulation) Options and associated environment variables: Argument Env-variable Description -h print this help -g port QEMU_GDB wait gdb connection to 'port' -L path QEMU_LD_PREFIX set the elf interpreter prefix to 'path' -s size QEMU_STACK_SIZE set the stack size to 'size' bytes -cpu model QEMU_CPU select CPU (-cpu help for list) -E var=value QEMU_SET_ENV sets targets environment variable (see below) -U var QEMU_UNSET_ENV unsets targets environment variable (see below) -0 argv0 QEMU_ARGV0 forces target process argv[0] to be 'argv0' -r uname QEMU_UNAME set qemu uname release string to 'uname' -B address QEMU_GUEST_BASE set guest_base address to 'address' -R size QEMU_RESERVED_VA reserve 'size' bytes for guest virtual address space -d options QEMU_LOG activate log -D logfile QEMU_LOG_FILENAME override default logfile location -p pagesize QEMU_PAGESIZE set the host page size to 'pagesize' -singlestep QEMU_SINGLESTEP run in singlestep mode -strace QEMU_STRACE log system calls -version QEMU_VERSION display version information and exit Defaults: QEMU_LD_PREFIX = /usr/gnemul/qemu-x86_64 QEMU_STACK_SIZE = 8388608 byte QEMU_LOG = /tmp/qemu.log You can use -E and -U options or the QEMU_SET_ENV and QEMU_UNSET_ENV environment variables to set and unset environment variables for the target process. It is possible to provide several variables by separating them by commas in getsubopt(3) style. Additionally it is possible to provide the -E and -U options multiple times. The following lines are equivalent: -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG -E var1=val2,var2=val2 -U LD_PRELOAD,LD_DEBUG QEMU_SET_ENV=var1=val2,var2=val2 QEMU_UNSET_ENV=LD_PRELOAD,LD_DEBUG Note that if you provide several changes to a single variable the last change will stay in effect. root@host:~# echo $? 1 Thanks, -bryan

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[libvirt-users] Cannot get eth0 to work on libvirt-lxc
by Marco Monteiro 19 Jan '13

19 Jan '13

I'm trying to get an Archlinux guest running on a Archlinux host. Everything works except ethernet. When I boot the host, --- # dmesg |tail [ 8.265493] Bridge firewalling registered [ 8.514547] IPv6: ADDRCONF(NETDEV_UP): virbr0: link is not ready [ 8.645303] ip6_tables: (C) 2000-2006 Netfilter Core Team --- Then I do --- # virsh -c lxc:/// start gitolite Domain gitolite started # dmesg |tail [ 348.793398] device veth0 entered promiscuous mode [ 348.793553] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 348.997973] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 348.997998] virbr0: topology change detected, propagating [ 348.998001] virbr0: port 1(veth0) entered forwarding state [ 348.998008] virbr0: port 1(veth0) entered forwarding state [ 348.998017] IPv6: ADDRCONF(NETDEV_CHANGE): virbr0: link becomes ready [ 349.784174] EXT4-fs (xvdg): re-mounted. Opts: (null) --- Then I enter the guest and do --- # ip link 5: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000 link/ether 02:00:00:00:00:17 brd ff:ff:ff:ff:ff:ff 7: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 --- So, eth0 exists. Now, still in the guest: --- # systemctl start dhcpcd@eth0 A dependency job for dhcpcd(a)eth0.service failed. See 'journalctl -xn' for details. # journalctl -xn -- Logs begin at Sat 2013-01-19 10:50:45 UTC, end at Sat 2013-01-19 10:56:26 UTC Jan 19 10:54:48 gitolite sudo[38]: pam_unix(sudo:session): session opened for us Jan 19 10:54:48 gitolite systemd[1]: Expecting device sys-subsystem-net-devices- -- Subject: Unit sys-subsystem-net-devices-eth0.device has begun with start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- Documentation: http://www.freedesktop.org/wiki/Software/systemd/catalog/7d495 -- -- Unit sys-subsystem-net-devices-eth0.device has begun starting up. Jan 19 10:56:18 gitolite systemd[1]: Job sys-subsystem-net-devices-eth0.device/s Jan 19 10:56:18 gitolite systemd[1]: Timed out waiting for device sys-subsystem- -- Subject: Unit sys-subsystem-net-devices-eth0.device has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- Documentation: http://www.freedesktop.org/wiki/Software/systemd/catalog/be02c -- -- Unit sys-subsystem-net-devices-eth0.device has failed. -- -- The result is timeout. Jan 19 10:56:18 gitolite systemd[1]: Dependency failed for dhcpcd on eth0. -- Subject: Unit dhcpcd(a)eth0.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- Documentation: http://www.freedesktop.org/wiki/Software/systemd/catalog/be02c -- -- Unit dhcpcd(a)eth0.service has failed. -- -- The result is dependency. --- At this point, nothing new in dmesg. Even though ip link should a eth0 device, the sys-subsystem-net-devices-eth0.device has failed? I don't understand this. This is libvirt 1.0.1 in linux 2.6.11. I tried with both systemd 197 and (thinking that recent changes with device naming could be the problem) with 196. It didn't work on either. The domain configuration is: --- <domain type='lxc'> <name>gitolite</name> <uuid>3122bf1d-11bb-0dd8-be64-7e352b3f8694</uuid> <memory unit='KiB'>262144</memory> <currentMemory unit='KiB'>262144</currentMemory> <vcpu placement='static'>1</vcpu> <os> <type arch='x86_64'>exe</type> <init>/sbin/init</init> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/lib/libvirt/libvirt_lxc</emulator> <filesystem type='mount' accessmode='passthrough'> <source dir='/mnt/gitolite'/> <target dir='/'/> </filesystem> <interface type='network'> <mac address='02:00:00:00:00:17'/> <source network='default'/> </interface> <console type='pty'> <target type='lxc' port='0'/> </console> </devices> </domain> --- I also tried using bridged networking configuration but I see the same problem. What could be causing this? Any ideas? Thanks, Marco

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[libvirt-users] Problems with VM networking on Ubuntu Quantal
by Dale Amon 18 Jan '13

18 Jan '13

I have shifted some VM's to a new server running Quantal and have had a world of trouble. The first one was caused by issues with an apparently compiled in path in their apparmor version which forced VM pools to be in /srv or similar rather than where I wanted them. For now this was not a big issue, and thankfully the server where it would be a big time problem (there are individual drives per major customer or user) is Debian. But... I still have issues. The networking has changed considerably and although I can get my VM running, I cannot reach it. The new quantal machines give you something like this: br0 Link encap:Ethernet HWaddr **** inet addr:10.0.0.xx Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: *****/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 p6p1 Link encap:Ethernet HWaddr **** UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 virbr0 Link encap:Ethernet HWaddr **** inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 vnet0 Link encap:Ethernet HWaddr fe:54:00:84:3c:4f inet6 addr: fe80::fc54:ff:fe84:3c4f/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 The VM machine has a static ip on the same network, ie 10.0.0.x. It worked fine on the old server but is not reachable (and cannot connect outward). Forwarding is turned on: cat /proc/sys/net/ipv4/ip_forward 1 The VM has eth0 Link encap:Ethernet HWaddr **** inet addr:10.0.0.xx Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: *****/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 An attempt to ping from the VM to anything outside gives a "Destination host unreachable" message. It has been a long time since I set the old machine up, so I may well have forgotten some step.

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[libvirt-users] how to know one domain is defined or not
by lei yang 18 Jan '13

18 Jan '13

Hi experts I want to write a script to determine one domain named "vm1" is defined or not, if defined, I will undefine it. The question is how could I know it define or not ? Lei

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[libvirt-users] Libvirt node is not getting booted through network with KVM too
by Varun Bhatnagar 18 Jan '13

18 Jan '13

Hi, Sorry for putting the images. Posting this question again. I am trying to boot my node through network with the following configuration (even with KVM it is not getting booted): < domain type='kvm'> < name>Node-2-3</name> < os> < type>hvm</type> < boot dev='network'/> < boot dev='hd'/> < /os> < memory>654321</memory> < vcpu>1</vcpu> < interface type='internal'> < source name='test1'/> < model type='am79c970a'/> < mac address='20:00:00:0F:03:01'/> < /interface> < interface type='internal'> < source name='test2'/> < model type='am79c970a'/> < mac address='20:00:00:0F:03:02'/> < /interface>  < interface type='bridge'> < source bridge='vboxtap0'/> < mac address='20:00:00:0F:03:03'/> < model type='am79c973'/> < /interface> < /domain> But I am getting an error message saying: Fatal: Could not read from the boot medium! System halted. Even my network setting is not getting reflected in the Virtualbox. Can you suggest me what is wrong with this configuration. I think to boot a node from network we need to define a boot server but where shall I add that, I am confused.... Any help will be appreciated. Thanks in advance. Regards, Varun =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you

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[libvirt-users] firewalld, no dhcp and virsh
by Paul Wouters 18 Jan '13

18 Jan '13

On all of the networks I create, I really don't want libvirt/KVM/virt-manager to do any kind of DHCP. I'm currently using xml files to feed into libvirt via virsh, for example: <network> <name>192_0_1</name> <bridge name='swan01' stp='on' delay='0' /> <mac address='12:00:00:16:16:BA'/> <ip address='192.0.1.127' netmask='255.255.255.0'> </ip> </network> Running this through virsh net-define gives no errors, and virt-manager shows: DHCP Start: disabled DHCP End: disabled But any attempt at starting the network causes: Error starting network '192_0_1': failed to add iptables rule to allow DHCP requests from 'swan01' Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 96, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/asyncjob.py", line 117, in tmpcb callback(*args, **kwargs) File "/usr/share/virt-manager/virtManager/network.py", line 82, in start self.net.create() File "/usr/lib64/python2.7/site-packages/libvirt.py", line 2049, in create if ret == -1: raise libvirtError ('virNetworkCreate() failed', net=self) libvirtError: failed to add iptables rule to allow DHCP requests from 'swan01' I narrowed this down to the fact that firewalld was not running. So I guess there are two bugs: 1) when not specifying dhcp ranges in the xml, it should _not_ try to poke DHCP holes. 2) when firewalld is not running, it should perhaps log a warning, but not abort the network start. Paul

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[libvirt-users] Libvirt daemon is not getting started
by Varun Bhatnagar 17 Jan '13

17 Jan '13

Hi, Earlier I was having libvirt-0.7.5 but now I have installed 0.9.8 version of libvirt now. I am trying to start libvirt daemon using the command below but daemon it is not getting started and the PID file is not getting created. Tried /usr/loval/sbin/libvirtd -d option too. In that case I am not getting any error but PID file is not getting created in this case too. /usr/local/sbin/libvirtd 2013-01-16 16:43:53.399+0000: 4070: info : libvirt version: 0.9.8 2013-01-16 16:43:53.399+0000: 4070: error : virCommandWait:2192 : internal error Child process (/usr/sbin/iptables --table mangle --delete POSTROUTING --out-interface virbr0 --protocol udp --destination-port 68 --jump CHECKSUM --checksum-fill) status unexpected: exit status 2 2013-01-16 16:43:53.406+0000: 4070: error : virCommandWait:2192 : internal error Child process (/usr/sbin/iptables --table mangle --insert POSTROUTING --out-interface virbr0 --protocol udp --destination-port 68 --jump CHECKSUM --checksum-fill) status unexpected: exit status 2 2013-01-16 16:43:53.406+0000: 4070: warning : networkAddGeneralIptablesRules:1259 : Could not add rule to fixup DHCP response checksums on network 'default'. 2013-01-16 16:43:53.406+0000: 4070: warning : networkAddGeneralIptablesRules:1260 : May need to update iptables package & kernel to support CHECKSUM rule. 2013-01-16 16:43:54.704+0000: 4070: error : umlStartup:471 : cannot initialize inotify 2013-01-16 16:43:54.704+0000: 4070: error : virStateInitialize:854 : Initialization of UML state driver failed 2013-01-16 16:43:54.704+0000: 4070: error : daemonRunStateInit:1157 : Driver state initialization failed and I am also trying to connect to VMPlayer with the following URL but it is giving the following error message: virsh # connect vmplayer:///session error: Failed to connect to the hypervisor error: Failed to connect socket to '/usr/local/var/run/libvirt/libvirt-sock': No such file or directory Is this because of the daemon, as it is not getting started or because of some other reason? Can anybody suggest any solution for this. I am stuck from past few days and not able to find solution. Any help will be appreciated. Thanks in advance. Regards, Varun =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you

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[libvirt-users] LibVirt CPU problem
by Michael Beham 16 Jan '13

16 Jan '13

Hi, I´m testing to start a KVM-VM with different CPU settings and I get an weird error when I use the parameter: <cpu mode='host-model'> !! I have a AMD Opteron 4280 CPU, but in the VM, proc/cpuinfo shows me, that I´m using Intel core2duo cpu model T7700 and in the flag-line of proc/cpu the system is listing the svm-flag of AMD?!?! If I use <cpu mode='host-passthrough'> I get the right CPU-model listed in the VM! Anyone an idea why I get the wrong information with host-model? BTW some further information about used versions: LibVirt version is 0.9.12 qemu-kvm 1.0 Kernel 3.3.2 Cheers, Mike

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