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Re: [libvirt-users] CPU Model detection with virsh capabilities
by Jiri Denemark 13 Sep '11

13 Sep '11

On Mon, Sep 12, 2011 at 16:33:53 +0200, Olivier BONHOMME wrote: > Hello, > > Thanks for your answer. My virsh capabilities is the following : > > <cpu> > <arch>x86_64</arch> > <model>pentium3</model> > <vendor>Intel</vendor> > <topology sockets='1' cores='4' threads='1'/> > <feature name='lahf_lm'/> > <feature name='lm'/> > <feature name='syscall'/> > <feature name='sse4.1'/> > <feature name='dca'/> > <feature name='xtpr'/> > <feature name='cx16'/> > <feature name='ssse3'/> > <feature name='tm2'/> > <feature name='est'/> > <feature name='vmx'/> > <feature name='ds_cpl'/> > <feature name='monitor'/> > <feature name='pni'/> > <feature name='pbe'/> > <feature name='tm'/> > <feature name='ht'/> > <feature name='ss'/> > <feature name='sse2'/> > <feature name='acpi'/> > <feature name='ds'/> > <feature name='clflush'/> > <feature name='apic'/> > </cpu> > > About what you say, I totally agree. It's just I am very surprised that > an Intel Xeon E5430 is detected just as a pentium3 That's because your CPU doesn't support nx feature, which is included in all models better than pentium3. Jirka

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Re: [libvirt-users] [libvirt] how did libvirt manage Virtual Network?
by Laine Stump 10 Sep '11

10 Sep '11

(This seems more appropriate for the libvirt-users mailing list) On 09/08/2011 10:16 PM, Wayne Xia wrote: > Working at the network management, I am a bit confused about the > VLAN model in libvirt. > > in the xml definition, there is a section as following: > > <devices> > <interface type='network'> > <source network='default'/> > </interface> > ... > <interface type='network'> > <source network='default' portgroup='engineering'/> > <target dev='vnet7'/> > <mac address="00:11:22:33:44:55"/> > <virtualport type='802.1Qbg'> > <parameters managerid='11' typeid='1193047' typeidversion='2' > instanceid='09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f'/> > </virtualport> > > </interface> > </devices> > > > What is the really meaning of its related parameters of > "virtualport"? I want to discover informations such as VLAN id, > the switch type( software switch or hardware switch), connecting > relationship, but from the xml I can only found "managerid". I am not > sure how to map these xml information to those I needed, could I > consider managerid as VLAN id, and a portgroup as a specified VLAN group? > By the way to use virtualport, what components should I install on > Linux? <virtualport> is used only when configuring guests that connect directly to a VEPA or VNLINK (i.e. 802.1Q) capable switch. Unless you have one of these switches, you will not use it. If you do have one of these switches, you will also have information included with them that explains the meaning of the virtualport parameters and how they are used (they're opaque to libvirt - it just passes them on to the switch without assigning any meaning to them). portgroup is a tag used to select certain bits of config out of <portgroup> sections in the <network> definition being used for the interface. Currently the things that can be configured in the <portgroup> sections are 1) <bandwidth> info, and 2) <virtualport> parameters. Again, it has nothing to do with VLAN groups. <portgroup> is very new, btw - it has only been in libvirt since 0.9.4, so if you're using an older version don't expect it to do anything. Down to the real basic question of which VLAN a particular guest is using - that can either be determined by the guest itself, or if the guest has no VLAN id setting, it could be determined by the switch/bridge the guest is connected to; in other words, wherever it is done, it's outside of libvirt (well, I guess if your platform has support for the iface-* commands, you could define a bridge that uses a vlan interface as its connection to the physical network - then traffic from any guest connected to that bridge would end up going onto the physical network with the given vlan id).

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Re: [libvirt-users] Graphical framebuffers confuse, XML format about spice
by Laine Stump 10 Sep '11

10 Sep '11

(please reply to the list rather than personal mail) On 09/08/2011 11:23 PM, huachao yao wrote: > > > 2011/9/9 Laine Stump <laine(a)laine.org <mailto:laine@laine.org>> > > On 09/07/2011 11:03 PM, huachao yao wrote: > > Hello, i want to start a guest OS in the server, and use spice > to achieve graphical interaction with the guest OS. But when > i config the XML file, i was confuse by spice . > The graphic node is : > <graphics type='spice' port='5990' ><listen type='address' > address='127.0.0.1'/></graphics> > > but is has such error as below : > libvir: QEMU error : internal error process exited while > connecting to monitor: qemu-spice: -spice > port=5990,addr=127.0.0.1,disable-ticketing: Invalid parameter > 'addr' > parse error: port=5990,addr=127.0.0.1,disable-ticketing > > > Apparently your "qemu-spice" binary supports the -spice option, > but doesn't support the addr option. That seems very strange. What > is the origin of "qemu-spice", and what version does it display? > > The qemu-spice version is : > version 0.13.50 (qemu-kvm-devel), copy-right 2003-2008 > and the host OS is Fedora 13 , x86_64 > I think that "qemu-spice" binary supports the -spice option, but > doesn't support the addr option." is a good reason to explain to > problem. But how can i get the latest qemu-spice ? > It is suit fedora 13? Where did the original "qemu-spice" come from? That's not an official Fedora13 package, and in later versions of Fedora, spice support is included in the standard qemu-kvm package. It sounds like you either built qemu + a spice patch from source, or found a prebuilt package like that somewhere. I've only used the spice support that is integrated into the qemu-kvm package of Fedora 14 and RHEL (the qemu-kvm in Fedora 13 is too old to have spice support, and Fedora 13 is now officially out of support mode) I would do one of these things: 1) try getting a source tarball for a more recent qemu-kvm release and build/install that on your F13 machine. 2) upgrade to F14 or F15 (if you upgrade to F14, add the virt-preview repo to your yum configuration (just copy http://repos.fedorapeople.org/repos/jforbes/virt-preview/fedora-virt-previe… into /etc/yum.repos.d) 3) Decide that you maybe don't *really* need spice support, but that the VNC-based guest displays are adequate for your needs - this will work with the stock qemu-kvm on F13 and is just fine for most uses.

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[libvirt-users] IPs of VMs on KVM
by PREETHI RAMESH 09 Sep '11

09 Sep '11

How can I find the IPs of the VMs using libvirt function? As of now, I'm thinking of using Nmap to get the MAC address and the ARP it to get the IP. Can someone please help me out?

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[libvirt-users] CPU Model detection with virsh capabilities
by Olivier BONHOMME 09 Sep '11

09 Sep '11

Hello everybody, I am a new user discovering libvirt with KVM software. During my first VM creation, I saw an issue with virsh that I can't understand. I wanted to emulate another CPU than the classical qemu32 using virsh. So I used the virsh capabilites command to detect how is detected my CPU host which is an Intel Xeon E5410 and my problem is that this CPU is detected only with the cpumodel "pentium3". But if use the kvm -cpu ? command, it returns me the following capabilities : $ kvm -cpu ? x86 qemu64 x86 phenom x86 core2duo x86 kvm64 x86 qemu32 x86 coreduo x86 486 x86 pentium x86 pentium2 x86 pentium3 x86 athlon x86 n270 Moreover, if i decide to use the pentium3 cpumodel for my KVM VM, the CentOS freeze during its loading. My libvirt and kvm are the following on a Debian Squeeeze : $ virsh version Compiled against library: libvir 0.8.3 Using library: libvir 0.8.3 Using API: QEMU 0.8.3 Running hypervisor: QEMU 0.12.5 Does anybody already had the same issue or am I doing anything wrong ? Thanks for your answers Regards, Olivier BONHOMME

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[libvirt-users] Graphical framebuffers confuse, XML format about spice
by huachao yao 09 Sep '11

09 Sep '11

Hello, i want to start a guest OS in the server, and use spice to achieve graphical interaction with the guest OS. But when i config the XML file, i was confuse by spice . The graphic node is : <graphics type='spice' port='5990' ><listen type='address' address='127.0.0.1'/></graphics> but is has such error as below : libvir: QEMU error : internal error process exited while connecting to monitor: qemu-spice: -spice port=5990,addr=127.0.0.1,disable-ticketing: Invalid parameter 'addr' parse error: port=5990,addr=127.0.0.1,disable-ticketing What is the meaning of <listen type='address' address='*****'/>, If the localhost IP is A and the spice-server IP is B. what should i set the listen type ? to start the Domain and to achieve graphical interaction with the guest OS.

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[libvirt-users] Libvirt xen snapshot support?
by Joshua Harlow 08 Sep '11

08 Sep '11

Hi all, I was wondering if there was support for xen (not xenserver/xcp) for snapshotting. I have seen various sites that say it doesn't (using domainsnapshot) but I wanted to verify with the source. Thanks. Josh

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[libvirt-users] Libvirt vm migration with xen 4.1.1
by Rogério Vinhal Nunes 08 Sep '11

08 Sep '11

Hello, I am trying to migrate a virtual machine between two xen 4.1.1 hosts using libvirt, but as I use this command: virsh migrate --live vm102 xen+ssh://10.0.254.8 The following error happens: error: POST operation failed: xend_post: error from xen daemon: (xend.err "can't connect: [Errno -2] Name or service not known") The live migration works fine using "xm --live migrate vm102 10.0.254.8", so everything is correctly set up. Am I doing something wrong? Xen = 4.1.1 Ubuntu = 10.04 virsh version = Using library: libvir 0.8.8 Using API: Xen 3.0.1 Running hypervisor: Xen 4.1.0

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[libvirt-users] How to dedicate a NIC for VM traffic without assigning it an IP
by Albert Chin 07 Sep '11

07 Sep '11

I am testing out a new server with RHEL6 running KVM. We have a few NICs on the server, one of which we would like to dedicate to network traffic to/from the virtual guests. Is it possible to do this without assigning an IP address to the NIC? We're currently doing something like this with Vmware Server, HP's HPVM for HP-UX/IA, and IBM's PowerVM for AIX. -- albert chin (china(a)thewrittenword.com)

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[libvirt-users] Libvirt migration with Xen 4.1.1
by Rogério Vinhal Nunes 07 Sep '11

07 Sep '11

Hello, I am trying to migrate a virtual machine between two xen 4.1.1 hosts using libvirt, but as I use this command: virsh migrate --live vm102 xen+ssh://10.0.254.8 The following error happens: error: POST operation failed: xend_post: error from xen daemon: (xend.err "can't connect: [Errno -2] Name or service not known") The live migration works fine using "xm --live migrate vm102 10.0.254.8", so everything is correctly set up. Am I doing something wrong? Xen = 4.1.1 Ubuntu = 10.04 virsh version = Using library: libvir 0.8.8 Using API: Xen 3.0.1 Running hypervisor: Xen 4.1.0

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[libvirt-users] vlan and libvirt
by Vidon Guillaume 06 Sep '11

06 Sep '11

Hi, I have to deploy some Ubuntu machines via pxe/dhcp/tftp/preseed/puppet on a vlan. the switches are configured to add vlan tag to the traffic to/from those machines. To test new configuration, i tried to configure a domain alike it was connected by a port of a managed switch configured in general mode where untag id is not 1. Anybody have already done this ? Can i use openvswitch to do this ? Thank you GV

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[libvirt-users] RAID1 over IP?
by David Ehle 05 Sep '11

05 Sep '11

I asksed about this in November last year but got on response. Anyone have any ideas now? Does anyone here have any experience with using KVM/libvirt with RAID1 over IP/DRBD or other HA solution? I'm trying to figure out the hardware configuration I would need to be able to survive a failure or planned shutdown of any one unit in a virtualization cluster. KVM/libvirt makes moving running VM's from one host to another a no brainer, but I'm trying to figure out the right way to be able to take a the storage backend for maintenance without disrupting the VMs. Right now I'm thinking something like KVM + libvirt + heartbeat/corosync + pacemaker + DBRM on Ubuntu 10.04 with 3 or 4 nodes - 2 hosts, 2 storage, or 1 host, 1 host + storage, 1 storage. Any thoughts? Thanks!

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[libvirt-users] Char dev error
by Jatin Kumar 04 Sep '11

04 Sep '11

Hello, I have been trying to migrate a guest from one host to another. But it is showing this error: virsh --connect qemu+ssh://root@host1/system migrate --live --undefinesource testvm3 qemu+ssh://root@host2/system tcp://host2:48160 error: operation failed: failed to retrieve chardev info in qemu with 'info chardev' I have tried this command from the host1 also but it shows the same error. Another thing i would like to ask is the that whats the use of migrateuri in migrate command ? -- Jatin Kumar

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[libvirt-users] ssh connection problem
by zahra tavakoli 03 Sep '11

03 Sep '11

Hello, I have a problem in remote connection to libvirt deamon. when I add the ssh connection in virt-manager, this error message appears: server closed connection: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/connection.py", line 1022, in _try_open None], flags) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 107, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirtError: server closed connection: Please let me know what the problem is. Thanks.

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[libvirt-users] New with Libvirt and having problems.
by Kevins Thoughts 31 Aug '11

31 Aug '11

Hi all. I've been playing around with KVM for a bit now and have several virtual machines up and running. Having passed what I considered "first look" stage, I'm ready to start using libvirt as a manager. For reference, pre-libvirt, I have started this VM with: /kvm -net nic,model=virtio -net tap,ifname=tap5,script=no -drive file=test1.img,if=virtio,boot=on -curses -no-reboot -m 1g -smp 2/ I have a test environment I like to play with, and created the initial domain XML using virt-install: /virt-install --name "Test" --ram 1024 --vcpus=2 --cpu host --description "Test VM" --import --file test1.img --os-type=linux --os-variant=virtio26 --network bridge=br0,model=virtio --graphics=none --autostart --prompt/ When I look in /var/log/libvirt/qemu/Test.log I see the VM is started with the command (edited down to the relevant parts): //usr/bin/qemu-kvm -S -m 1024 -smp 2 -name Test,process=qemu:Test -nographics -boot c -drive file=/kvms/test1.img,if=none,boot=on /This has two problems: 1) The "-S" is keeping the system from booting 2) the "if=none" needs to be "if=virtio" I've confirmed both by changing -nographics to -curses and watching what happens. For #1, its a big fat nothing (no surprise since -S turns off the CPUs), for #2 grub loads and the kernel boots, but my /dev/vda3 isn't found so "init" can't start. I'm anticipating a 3rd problem: I don't see where to specify that I want the VM to use "tap5" of my bridged network. Can some kind soul please let me know what I need to change in the domain XML file to fix these issues? Thanks, Kevin ps. I've post this to my blog at http://www.kevinsthoughts.com/2011/08/kvm-management-libvirt/ if anyone would prefer to answer there.

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[libvirt-users] conflict disk error
by Paras pradhan 31 Aug '11

31 Aug '11

Hi, In one of my nodes I am getting libvirt error. -- ERROR Unknown failure Traceback (most recent call last): File "/usr/sbin/virt-install", line 895, in ? main() File "/usr/sbin/virt-install", line 677, in main options.sparse, options.nodisks, guest, ishvm, conn) File "/usr/sbin/virt-install", line 239, in get_disks is_file_path), disk, size) File "/usr/sbin/virt-install", line 239, in <lambda> is_file_path), disk, size) File "/usr/sbin/virt-install", line 202, in get_disk d = cli.disk_prompt(None, kwargs) File "/usr/lib/python2.4/site-packages/virtinst/cli.py", line 277, in disk_prompt if dev.is_conflict_disk(conn) is True: File "/usr/lib/python2.4/site-packages/virtinst/VirtualDisk.py", line 890, in is_conflict_disk xml = vm.XMLDesc(0) File "/usr/lib64/python2.4/site-packages/libvirt.py", line 247, in XMLDesc if ret is None: raise libvirtError ('virDomainGetXMLDesc() failed', dom=self) libvirtError: Unknown failure -- command used: virt-install --nographics --paravirt --name dora --ram 2048 --file /dora.img --file-size 153 --location nfs://mydom:/distributions/redhat60/x86_64/ -x "ks=http://mydom/ks/redhat60-dora.ks ip=x.x.x.x netmask=255.255.255.0 dns=x.x.x.x gateway=x.x.x.x" -b xenbr0 Ideas? Thanks Paras.

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Re: [libvirt-users] New with Libvirt and having problems.
by Kevins Thoughts 30 Aug '11

30 Aug '11

> > Ah I never gave KVM or virtualization a try in Gentoo. None of my > servers have X though using X11 forwarding still works. In CentOS the > package is xorg-x11-xauth , looks like it may be x11-apps/xauth in > Gentoo. No X anywhere in my environment <smile>. Somehow I normally manage! > > Does "virsh iface-list" show tap5? Actually that command errors out: /virsh # iface-list error: Failed to list active interfaces error: this function is not supported by the connection driver: virConnectNumOfInterfaces/ > > For the disk, this is what I have for my virtio disks... > > <disk type='file' device='disk'> > <driver name='qemu' type='qcow2'/> > <source file='/vmstore/images/domain0001.qcow2'/> > *<target dev='vdb' bus='virtio'/>* > <address type='pci' domain='0x0000' bus='0x00' slot='0x06' > function='0x0'/> > </disk> My XML had the type wrong, setting it to raw. Alas, I still see the invoked KVM being passed: /-drive file=/kvms/test1.img,if=none,id=drive-virtio-disk0,boot=on,format=qcow2 / The "if=none" is the problem, it needs to be "if=virtio". KVM is also still being passed the "-S" flag as its first parameter, so the CPUs are not starting. > > Also maybe add something like this to your virt-install line... > > "--disk path=test1.img,device=disk,bus=virtio" At this point, I'm just editing the XML, its easier. Once I get one working, I can tweak for the others. Virt-install at least got me started. Kevin

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[libvirt-users] Fwd: Re: New with Libvirt and having problems.
by Kevins Thoughts 30 Aug '11

30 Aug '11

On 8/29/2011 10:29 PM, Trey Dockendorf wrote: > Have you looked into using virt-manager? When I started using KVM I > found that new VM provisioning was much simpler with that interface. Alas, Virtmanager doesn't seem to be a supported program under Gentoo - the distribution I use. If its X-based, it wouldn't work anyhow - I'm strictly a command line shop. > > Once you've created your domain with "virt-install" you can make > changes using virsh. > > virsh -c qemu:///system edit Test > > That will allow you to directly edit the domain. > > In the virt-install line you used "bridge=br0" , maybe replace that > with "bridge=tap5". If that doesn't do it, once your editing the XML > you can try something like the following... I'm familiar with virsh edit and have used it to probe around a bit. Actually tried the "bridge=tap5" a few days ago and get the message: /ERROR internal error Failed to add tap interface to bridge. tap5 is not a bridge device/ > > <interface type='bridge'> > <mac address='52:54:00:4d:74:c7'/> > <source bridge='tap5'/> > <model type='virtio'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' > function='0x0'/> > </interface> > > That was created using virt-manager, so you probably need to use what > virt-install created for your mac address and address. Gave that a shot, attempting to create a new domain with "br0" replaced by "tap5" and got the same error message: /error: internal error Failed to add tap interface to bridge. tap5 is not a bridge device/ > > Is your init failing on /dev/vda3 and then kernel panic? If so it's > likely your guest OS doesn't have the necessary kernel modules loaded. > Depending on your distro it will vary, but using CentOS 6 I've found > they are automatically loaded. This is what's loaded in CentOS 6 Well, yes and no. Its failing with a kernel panic because KVM is being started with if=none instead of if=virtio. If I manually change it, it works fine. Just need to know where to update that in the domain XML file. For what its worth, the image runs 100% fine with started manually with: /kvm -net nic,model=virtio -net tap,ifname=tap5,script=no -drive file=test1.img,if=virtio,boot=on -curses -no-reboot -m 2g -smp 2/ So I know the image is good. > > # lsmod | grep virtio > virtio_blk 5087 5 > virtio_pci 6733 0 > virtio_ring 7169 2 virtio_blk,virtio_pci > virtio 4824 2 virtio_blk,virtio_pci > > Try changing the disk to ide , and then verifying your system is able > to load the virtio modules. > > Also , once you have your XML the way you like, if your going to stick > with command line look at using virsh though I highly recommend > virt-manager. > > I'm still very new to KVM myself, so hopefully that was of some use > > - Trey Thanks!

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[libvirt-users] VMs do not start randomically during host boot
by Josir Cardoso Gomes 30 Aug '11

30 Aug '11

Hi Folks, Host: Ubuntu 10.04 64bits 3 Guests with Ubuntu 10.04 64bits Every monday, when I turn the host on, some guests starts automatically and others don´t. Every week libvirt "elects" a different guest and don´t start it. If I start it manually, it boot fine. Looking at /var/log/libvirtd, it only show the log of the guests that boot. Not a tip of the sleepy guests servers. Could somebody give me a glue on how to find the problem ? Thanks in advance, Josir.

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[libvirt-users] hello, I 've deployed libvirt, and it is OK to use kvm.But when I use virtualbox, I can not attach a device to a domain
by bin liu 30 Aug '11

30 Aug '11

hello,I 've deployed libvirt, and it is OK to use kvm.But when I use virtualbox,I can not attach a device to a domain. It reports the error that can't get device from device.xml here is my xml file for device(device.xml): <disk type='block'> <driver name='phy'/> <source dev="/home/lb/iscsitest/vdisk.img"/> <target dev='sdb' bus='usb'/> </disk> and the xml file for the vm: <domain type='vbox'> <name>winxp_3D</name> <uuid>d2542bf2-3d56-41fa-a048-4f9a7ed3cf4a</uuid> <memory>787456</memory> <currentMemory>787456</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64'>hvm</type> <boot dev='fd'/> <boot dev='cdrom'/> <boot dev='hd'/> </os> <features> <acpi/> </features> <clock offset='localtime'/> <on_poweroff>destroy</on_poweroff> <on_reboot>destroy</on_reboot> <on_crash>destroy</on_crash> <devices> <disk type='file' device='disk'> <source file='/root/VirtualBox VMs/winxp_3D/winxp_3D.vdi'/> <target dev='hda' bus='ide'/> </disk> <interface type='bridge'> <mac address='08:00:27:6f:c6:4f'/> <source bridge='tap0'/> <model type='Am79C973'/> </interface> <input type='mouse' bus='ps2'/> <graphics type='desktop' display=':0.0'/> <sound model='ac97'/> <video> <model type='vbox' vram='32768' heads='1'> <acceleration accel3d='yes' accel2d='yes'/> </model> </video> </devices> </domain>

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[libvirt-users] Help!
by huachao yao 30 Aug '11

30 Aug '11

Buddy, I am a noob in libvirt develop. When I want to create a domain by using virDomainDefineXML and displays a window on the host desktop. But when I add the line " <graphics type='sdl' display=':0.0'/>" into the config xml file, the error as below will happen. libvir: QEMU error : internal error process exited while connecting to monitor: Could not initialize SDL(No available video device) - exiting when I delete " <graphics type='sdl' display=':0.0'/>",I can create the domain normally. Who can help me?! The config xml file is as below: <domain type='qemu'> <name>qemu_ubuntu_01</name> <memory>219200</memory> <currentMemory>219200</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64' machine='pc'>hvm</type> <boot dev='hd'/> <boot dev='cdrom'/> </os> <devices> <emulator>/usr/bin/qemu</emulator> <disk type='file' device='cdrom'> <source file='/root/Downloads/ubuntu-11.04-desktop-amd64.iso'/> <target dev='hdc' bus='ide'/> <readonly/> </disk> <disk type='file' device='disk'> <source file='/var/lib/libvirt/images/winXP.img'/> <driver name='qemu' type='raw'/> <target dev='hda'/> </disk> <video> <model type='cirrus' vram='9216' heads='1'> <acceleration accel3d='yes'/> </model> </video> <interface type='bridge'> <mac address='52:54:00:d8:65:c9'/> <source bridge='virbr0'/> </interface> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='10' listen='127.0.0.1'/> <graphics type='sdl' display=':0.0'/> </devices> </domain>

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[libvirt-users] Xenapi - Domain Console opening & System info
by sharmila radha krishnan 29 Aug '11

29 Aug '11

Hi All,   I would like to know how to open a console of a running domain using libvirt. Looking at the code, seems that there is no support available currently. Any workarounds for this? Also how do I get the System info(Like system tot memory use/Disk info/cpu info,network info etc through libvirt. Are there any palns to support this in the future release?   Also, how to I add a new API to libvirt?   Thanks, Sharmila

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[libvirt-users] Reg: Workaround to use pivot_root while using "rootfs" for "/" ?
by Alphonse Hansel Anthony 27 Aug '11

27 Aug '11

Hi All, I am trying to start a lxc container using libvirt and I am facing an issue due to pivot_root. The return code from the system call “pivot_root” is EINVAL (Invalid arguments). I isolated the issue to this specific condition check within the system call. This is an code snippet from fs/namespace.c::pivot_root * error = -EINVAL; if (root.mnt->mnt_root != root.dentry) goto out2; /* not a mountpoint */ if (root.mnt->mnt_parent == root.mnt) << this represents a circular mount reference goto out2; /* not attached */ if (new.mnt->mnt_root != new.dentry) goto out2; /* not a mountpoint */ if (new.mnt->mnt_parent == new.mnt) goto out2; /* not attached */ * This issue occurs for me, since I am using fstype "rootfs" as "/" and all binaries are mounted ISO's for execution within "/". Based on information from the below links, I have realized, that pivot_root is not possible for the above case.* **https://lkml.org/lkml/2005/10/8/17 https://bugzilla.kernel.org/show_bug.cgi?id=4857 * I would like to know , if my observations are correct and is there any workaround to overcome this issue? Any help in this regard would be useful. -Alphonse

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[libvirt-users] (no subject)
by lingjiao.lc 26 Aug '11

26 Aug '11

Hi, I’ve used the libvirt and sheepdog, they are so great! But I have one question about libvirt and sheepdog. As we know, I can use this command to create a sheepdog image, #qemu-img create –f raw sheepdog:fedora15.img 40G but how can I create a pool and volume for sheepdog with the xml of libvirt ? ________________________________ This email (including any attachments) is confidential and may be legally privileged. If you received this email in error, please delete it immediately and do not copy it or use it for any purpose or disclose its contents to any other person. Thank you. 本电邮(包括任何附件)可能含有机密资料并受法律保护。如您不是正确的收件人，请您立即删除本邮件。请不要将本电邮进行复制并用作任何其他用途、或透露本邮件之内容。谢谢。

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[libvirt-users] libvirt ruby binding with vmware
by Ohad Levy 25 Aug '11

25 Aug '11

Hi, I've been trying to use the ruby libvirt binding with vmware esx on F15, however it doesnt seems to work, I get: Libvirt::ConnectionError: Call to virConnectOpen failed: Cannot access CA certificate '/etc/pki/CA/cacert.pem': No such file or directory I've using the same uri with virsh and it works. it seems like somehow the no_verify is not passed, or we are back to old libvirt error messages :) any idea? thanks, Ohad

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