July 2011 - Users - libvirt List Archives

[libvirt-users] converting save/dump output into physical memory image
by Andrew Tappert 04 Jun '12

04 Jun '12

A lot of people in the security community, myself included, are interested in memory forensics these days. Virtualization is a natural fit with memory forensics because it allows one to get access to a guest's memory without having to introduce any extra software into the guest or otherwise interfere with it. Incident responders are particularly interested in getting memory dumps from systems they're investigating. Virsh has "save" and "dump" commands for storing the state of a guest to a file on disk, but memory of KVM guests doesn't get saved in the "standard" input format for memory forensics tools, which is a raw physical memory image. (This is what you'd get via the classical "dd /dev/mem" approach or the contemporary equivalent using the crash driver; and VMware Server and Workstation produce .vmem files, which are such raw physical memory images, when a guest is paused or snapshotted.) In order to analyze the memory of Libvirt/KVM guests with my Linux memory forensics software, Second Look, I've created a tool for converting Libvirt-QEMU-save files (output of virsh save command) or QEMU-savevm files (output of virsh dump command) to raw physical memory images. I've got a basic working capability, though I'm still tracking down some problems with a guest allocated 8GB RAM--not all the memory seems to be present in the save or dump file. And I haven't tested very extensively yet, version support is limited to what I myself am currently running, etc. I'd like to know if this is a capability that others are interested in. Is this something that would be of interest to the Libvirt project if I were to contribute the code, or to the KVM project, or do you think it best exists as a separate project? I've also got a proof-of-concept tool for converting hibernate images to raw physical memory images. Perhaps a collection of tools for converting various memory dump formats would be a good project. Anyone else interested in this kind of stuff? As an author of commercial memory forensics software I've got a vested interest in availability of good memory acquisition capabilities. But there are a number of people working on FOSS Linux memory analysis tools, too... Andrew

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Re: [libvirt-users] ruby-libvirt 0.4.0
by Chris Lalancette 09 Nov '11

09 Nov '11

On 07/29/11 - 09:34:17AM, David M. Barlieb wrote: > Hi, I'm fairly new to using libvirt. I have RHEL6 servers running KVM > virtual environment. As I understand it, libvirt provides the tools to > the KVM environment so that I can create domains or virtual guests. So, > that being said, what does this ruby-libvirt provide me or enhance given > my current setup. > > > > I'll understabnd if this is a little rudimentary but I really do not > know who or where else to ask these types of question. I get quite a bit > of email from the libvirt-users groups about libvirt and really have no > idea if I can or should put any of these into my current setup, or if I > should be asking RedHat this. > > > > I certainly wouldn't mind testing and contributing to these effort to > enhance the libvirt tools and KVM hypervisor but think I need a better > understanding of exactly how libvirt and KVM interact and what the > enhancements bring to the table. In the future it is usually best to keep one of the lists on an email; that way, if I'm away or not responding, someone else can help you. I've added libvirt-users to this response. In any case, you have the right idea. Libvirt is a control plane for various different virtualization solutions. Arguably the most popular virtualization solution that libvirt can control is KVM, but it can also manage Xen, VMware ESX, LXC (linux containers), UML, etc. Libvirt provides both tools (like virsh and libvirtd) and APIs for interacting with virtual machines. The APIs are things like virDomainShutdown(), virDomainReboot(), etc. The ruby-libvirt package is a thin wrapper around these APIs, so that you can use this functionality from ruby programs. That is, you would be able to do something like: dom.reboot dom.shutdown from your ruby programs. There are also bindings for other languages such as python, php, and perl. There is a lot more information at http://libvirt.org, and there is more information specifically about the ruby bindings at http://libvirt.org/ruby -- Chris Lalancette

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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] Using libvirt with a preexisting network infrastructure
by Vegard Vesterheim 04 Aug '11

04 Aug '11

I have a server running Ubuntu natty (libvirt 0.8.8) with separate ethernet interfaces. I have created an unnumbered bridge for each interface, these are connected to an already established network infrastructure, with preexisting DHCP and DNS services. I would like to handle *establishment* of these bridges outside libvirt (via /etc/network/interfaces), but still have them defined as networks within libvirt. So, libvirt shall not *configure* the bridges, just be aware of their existence and connect each VM to its configured bridge. This way I can use virt-manager/libvirt to connect my virtual hosts to the correct network. The libvirt commands net-start, net-destroy would become no-ops. It seems that libvirt is geared towards handling all network configuration itself, but I do not need help from libvirt for establishing the bridges, DHCP and DNS. I know that I can edit the <interface> element in the VM XML-files after creation, to assign a virtual host to a bridge, like this: <interface type='bridge'> <source bridge='br22'/> .... </interface> This works, but I would like to do this with libvirt mechanisms. Is this possible? - Vegard V -

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[libvirt-users] Custom storage pools/volumes
by Mohammed Naser 04 Aug '11

04 Aug '11

Hello everyone, We're currently working with using libvirt as an abstract API to make our dealings with other hypervisors far easier and faster, however, we have our own storage API that connects/disconnects and makes LUNs available over iSCSI with iSER. We would have loved to use a storage pool however our system implements a one target per LUN/VDI, therefore, we'd have to create a pool for each server. We really would like to utilize the virStorageVolDownload / virStorageVolUpload API calls, however, it seems that those would only work if the storage volume is within a pool. Is there a way we could possibly define a storage volume without a pool or will we have to create a storage pool for each individual volume? Thank you, Mohammed Naser http://vexxhost.com

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[libvirt-users] UID/GID for qemu & kvm
by Jeff 29 Jul '11

29 Jul '11

We use AD infrastructure for user/group management, and GID 107 is already in use. Can I create an AD entry for the kvm and qemu groups with different GIDs, as well as the qemu user/UID? From looking at the libvirt package, it appears it does a getent to see if these exist and, if not, creates them locally, so I assume adding them to AD is ok - and that the GID/UID specified in the package isn't explicitly necessary. Just looking for verification. - Jeff

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[libvirt-users] ANNOUNCE: ruby-libvirt 0.4.0
by Chris Lalancette 29 Jul '11

29 Jul '11

All, I'm pleased to announce the release of ruby-libvirt 0.4.0. ruby-libvirt is a ruby wrapper around the libvirt API. Version 0.4.0 brings new APIs, more documentation, and bugfixes: * Updated Domain class, implementing dom.memory_parameters=, dom.memory_parameters, dom.updated?, dom.migrate2, dom.migrate_to_uri2, dom.migrate_set_max_speed, dom.qemu_monitor_command, dom.blkio_parameters, dom.blkio_parameters=, dom.state, dom.open_console, dom.screenshot, and dom.inject_nmi * Implementation of the Stream class, which covers the libvirt virStream APIs * Add the ability to build against non-system libvirt libraries * Updated Error object, which now includes the libvirt code, component and level of the error, as well as all of the error constants from libvirt.h * Updated Connect class, implementing conn.sys_info, conn.stream, conn.interface_change_begin, conn.interface_change_commit, and conn.interface_change_rollback * Updated StorageVol class, implementing vol.download and vol.upload * Various bugfixes Version 0.4.0 is available from http://libvirt.org/ruby: Tarball: http://libvirt.org/ruby/download/ruby-libvirt-0.4.0.tgz Gem: http://libvirt.org/ruby/download/ruby-libvirt-0.4.0.gem It is also available from rubygems.org; to get the latest version, run: $ gem install ruby-libvirt As usual, if you run into questions, problems, or bugs, please feel free to mail me (clalance(a)redhat.com) and/or the libvirt mailing list. -- Chris Lalancette

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[libvirt-users] management tools for kvm
by David M. Barlieb 29 Jul '11

29 Jul '11

I have been installing kvm guests on a number of hosts and have been managing them through a single virt manager on one of the hosts. I am looking for a tool that will allow me to manage them from a windows workstation, possibly using a web interface. Everything I've looked at and read about seems to require a linux workstation to install on, like oVirt or ConVirt. I am looking for a product that can run on a windows workstation using either firefox or ie. dave

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[libvirt-users] Seg fault in 0.9.4-rc1
by Whit Blauvelt 28 Jul '11

28 Jul '11

Hi, Using virt-manager, asking to migrate a kvm domain from the same box virt-manager is running on to another consistently results in libvirtd faulting on the local box. Migration in the other direction, from the second box to the box virt-manager is on, works fine. A libvirtd log made with debug=1 is at http://transpect.com/debug/libvirtd_segfault.log It was doing the same thing with a recent 0.9.3 git version too. This is with virt-manager 0.9.0. Whit

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[libvirt-users] qemu:///session vs qemu:///system
by Peter Thomassen 28 Jul '11

28 Jul '11

Hi, I am running several QEMU VMs on a host machine. There's different persons being responsible for different VMs. I would like to find a way to allow everybody to manage just the VMs they are assigned to (i.e. insert some ISO file, stop the machine and so on) without allowing them to disturb the other VMs. Also, I would like to allow these persons to set up new VMs (there's plenty of unallocated storage) without having to ask me (root) to do it for them, but without allowing them to delete other VMs. (Just setting user rights on the filesystem is not enough, as I use LVM volumes which are not assigned to a user in the typical sense, are they?) I know that most of this could probably be achieved by using qemu:///session instead of qemu:///system. However, I read that there's networking issue in this case (which issues precisely?), and I am also not sure if there's other disadvantages like less efficient handling in some situations by the kernel, or whatever. Is anybody there who could clarify this for me? Thank you, Peter

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[libvirt-users] small webGUI?
by Stefan G. Weichinger 28 Jul '11

28 Jul '11

Greetings, at a customer we run a single VM for a specific application. Unfortunately this VM does not start automatically with the host although I checked the relevant box within virtual machine manager. I assume upgrading libvirt might help (we run 0.8.7-r1 right now, gentoo linux). Aside from that it would be good to have a simple WebGUI for the users to let them press START just in case. They run Windows on their machines so I can't give them VMM ... Could you point me at the most simple GUI to do that? I'd prefer something very lightweight without too much requirements (for example I'd like to avoid installing mysql for that ;-) ). Thank you, Stefan

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[libvirt-users] with current libvirt git virsh expects vbox, refuses kvm define
by Whit Blauvelt 28 Jul '11

28 Jul '11

Okay, just installed libvirt from today's git on two Ubuntu systems. The first one went fine (except for continuation of the problem that virsh and virt-manager cannot connect to 0.8.3 systems that's been there in the 0.9.x libvirts) ... but on the second, after install, "virsh list --all" presents nothing. And: # virsh define tu1004.xml error: Failed to define domain from tu1004.xml error: internal error unexpected domain type kvm, expecting vbox These are _exactly_ the same xml files as are still working on the first system. And in both cases the new libvirt was built with defaults. Long ago the second system did have VirtualBox on it, so that may have been found while it was setting up config, but that's no good reason for KVM to fail here, right? Must be a thing with the git. Ran the 0.9.3 release built on this system previously without this problem. Whit

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Re: [libvirt-users] VirtualBox headless
by Guilherme Santos 27 Jul '11

27 Jul '11

My objective is also to run headless virtual machines through libvirt library. I am using an Ubuntu 10.04 distro and libvirt 0.9.2. Before asking you guys about it, I searched on the web and found this: Hi, > > thanks for your hint. > > I read the lines in the documentation, but unfortunately editing the xml > > within virsh lead to the errors. > > The Solution to a headless domain was to edit the XML file from bash and > then > > #virsh: define <domainname.xml> > > to reload the new values for the graphics type of the machine. > > Obvioulsy something went wrong when editing "live".... > > Regards, > Christian > > Am 24.06.2010 18:27, schrieb Jean-Baptiste Rouault: > > Hi, > > > > Something like this should work, as can be seen in the > > > documentation here : http://libvirt.org/formatdomain.html#elementsGraphics > > > > <drivers> > > <graphics type='rdp' autoport='yes' /> > > > </drivers> > > > > Regards, > > > > Jean-Baptiste > > > > > >> Hello, > >> > >> I'm trying to use the VirtualBox/vbox driver together with libvirt 0.8.1 > >> on a Ubuntu Lucid Machine, VirtualBox Release 3.1. > > >> > >> The goal is to run the virtual machines headless and to connect using RDP. > >> > >> When starting a virtual domain using 'virsh start <domainname>' the GUI > >> of VirtualBox will pop up and I see no option to prevent this. If X is > > >> not running, the virsh command will terminate with 'unknown failure'. > >> > >> I've found some hints on inclusion of the headless statement in the > >> 'graphics' part of the XML definition file, but when I tree to adopt > > >> this, the editing of the file will crash. > >> > >> Has anyone achieved to manage VBox machines with libvirt on a headless > >> server ? > >> > >> Thanks in advance for some hints or experiences with this issue, > > >> Christian > >> > > Unfortunately this isn't working for me. Following is my XML configuration: <domain type='vbox'> <name>THEDOMAIN</name> <uuid>33f6e188-1479-46f4-9d90-4d5a2d3a30f2</uuid> <memory>393216</memory> <currentMemory>393216</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686'>hvm</type> <boot dev='hd'/> <boot dev='cdrom'/> </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='/local/vbox-shared.vdi' /> <target dev='hda' bus='ide'/> </disk> <disk type='file' device='cdrom'> <source file='/local/ubuntu-11.04-desktop-i386.iso' /> <target dev='hdc' bus='ide'/> </disk> <interface type='user'> <mac address='08:00:27:9a:d0:63'/> <model type='Am79C973'/> </interface> <input type='mouse' bus='ps2'/> <graphics type='rdp' autoport='yes' /> <video> <model type='vbox' vram='12' heads='1'> <acceleration accel3d='no' accel2d='no'/> </model> </video> </devices> </domain> When I run command *virsh start THEDOMAIN* it is popping up the following error message: *OpenRemoteSession/LaunchVMProcess failed, domain can't be started* As it wasn't working I also tried other options, but unfortunately, using all other graphic type options (except for 'spice', which I didn't try) the GUI is launched. I don't think I'll be needing a RDP connection, neither anything similar to that, except if these are necessary to basic management of the vm through virsh (start, stop, reboot, create and revert snapshots). Isn't there one simple way to run a virtual machine domain headless without vnc, spice or rdp servers? If not, which could be going wrong in my xml configuration? To help understanding of my desired behavior, what I need is to do through virsh what can be done using *VBoxManage startvm THEDOMAIN --headless* or *VBoxHeadless startvm THEDOMAIN*, because will use other hypervisors in the future, so it is a critical thing to me. Thanks in advance for the help, Guilherme Santos

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[libvirt-users] Wanted: method for qemu hook script to know if called for migration
by Whit Blauvelt 27 Jul '11

27 Jul '11

Hi, "Before a QEMU guest is started, the qemu hook script is called" (http://libvirt.org/hooks.html) In writing a simple bash script to prevent a VM on shared storage from being started on one host if it's already running on another, it's easy enough to check if virsh on the other host reports the particular VM as "shut off" there, and go ahead if that's the case. What's I'm having trouble coming up with is a simple method to allow a migration from the second system over to the first with that script in place. As the doc says, /etc/libvirt/hooks/qemu is "Executed when a QEMU guest is started, stopped, or migrated," so when it's simply being started, it makes sense to be sure it's not already running on the second system, and prevent the start if it's not. Works fine for me. But when a migration is requested, the script is called in the same way as when it's being started. What I need is a way, from within the script, to tell whether it's a migration context, so that then the start will be allowed, despite the VM's already being running on the second system. Any ideas how to do that? Unfortunately what's passed to the script directly is just "[vmname] start begin -" in both cases. And I don't see that a separate migrate process shows up in the process tables until after getting beyond the qemu hook script. As a feature suggestion, it would be nice if that fourth input variable, currently "-", was something like "migrate" in this instance. Thanks, Whit

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[libvirt-users] python-libvirt for 0.9.3 leaking file descriptors
by Igor Serebryany 26 Jul '11

26 Jul '11

i've reported this issue before, so i guess this is a regression. looks like the python bindings for 0.9.3 are leaking file descriptors: root@cloud1:~# python Python 2.6.6 (r266:84292, Dec 26 2010, 22:31:48) [GCC 4.4.5] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> libvirt.getVersion() 9003 >>> def openclose(): ... c = libvirt.open('qemu:///system') ... c.close() ... >>> import os >>> os.system('lsof -p %d | wc -l' % os.getpid()) 37 >>> openclose() >>> os.system('lsof -p %d | wc -l' % os.getpid()) 40 >>> openclose() >>> os.system('lsof -p %d | wc -l' % os.getpid()) 43 every time I open and close a connection to libvirt, i loose 3 file descriptors. these are a socket and two fifo pipes. i'm using the -3 build on debian sid. can someone test this on a fedora machine? curious if this is something inside libvirt or a problem with the build... thanks, --igor

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[libvirt-users] insert ISO into a KVM guest
by Jeff 26 Jul '11

26 Jul '11

There's got to be a simple way to attach an ISO to a KVM guest. I just haven't yet discovered it. I've tried adding the following stanza to my guest XML file, under the <devices> stanza and starting the guest: <disk type='file' device='cdrom'> <driver name='qemu' type='raw' /> <source file='/etc/libvirt/qemu/isos/kvm1.iso' /> <target dev='hda' bus='ide' /> <readonly /> </disk> But I get the following: error: Failed to start domain rhel6guest error: internal error process exited while connecting to monitor: char device redirected to /dev/pts/3 qemu: could not open disk image /etc/libvirt/qemu/isos/kvm1.iso: Permission denied A perms issue should be easy to address one would think, but I've tried every possible combination of perms changes including 777. Changed ownership from root to qemu:qemu (though I'm running as root). I'm not running SELinux. Anyone have any insights on how to mount a simple ISO into a KVM guest? Both at build time AND while the guest is running? Thanks Jeff

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[libvirt-users] Ping not working after a migration
by Adnan Pasic 26 Jul '11

26 Jul '11

Hello guys, maybe you can help me with following issue. I have created a little cloud with a host and two worker nodes using opennebula. The setup went successfully until now, I am able to create VM's and move them via normal and live migration. Another (possibly) important information is that I configured my virtual bridge on both worker nodes like this: auto br0 iface br0 inet static address 192.168.0.[2|3] netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 #gateway 192.168.0.1 bridge_ports eth0 bridge_stp on bridge_maxwait 0 The command "brctl show" gives me following things back: bridge name bridge id STP enabled interfaces br0 8000.003005c34278 yes eth0 vnet0 (<- only appears on node with running VM) virbr0 8000.000000000000 yes According to thelibvirt wiki this setting is good as is. However, the issue I'm having is that when I create a VM and assign a static IP to it, which looks like e.g. 192.168.0.5, I firstly am able to ping this VM from both worker nodes, and also when I perform a live migration the ping stops for a few seconds (until the nodes realize the new route to this VM) and then starts pinging normally again. However, when I perform a normal migration the ping doesn't recover anymore, but answers repeatedly with: Destination Host Unreachable Do you know what could be the problem? Where is the difference between a normal and live migration and how can the ping after live migrating still work, but after a normal migration not? Thanks a lot! Regards, Adnan

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[libvirt-users] Split a qcow2-image?
by Stefan G. Weichinger 26 Jul '11

26 Jul '11

Hello, I converted a W2003-Server to a vmdk-image, I didn't think too much back then ... Now I have 2 windows-drives C: and E: inside one vmdk-image-file, which was converted to qcow2. I have installed drivers and stuff into that VM already and would like to avoid to start over again with the vmdk-file -> Is there a way to split that one qcow2 into 2 separate files, one for each windows-harddisk? or plan B: can I possibly enlarge the part of C: inside that qcow2? I use qemu-kvm on gentoo linux, and libvirt-0.9.3-r1. I would appreciate any help on this topic! Thanks Stefan

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[libvirt-users] Need help for Qemu-KVM
by kp chetan 25 Jul '11

25 Jul '11

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[libvirt-users] VM creation using libvirtd for the qemu-KVM hypervisor
by bala suru 25 Jul '11

25 Jul '11

Hi, I have some basic doubt at the VM creation using libvirtd for the qemu-KVM hypervisor . I need to create a VM which can read the data uart/file and store/send to other VM .. How to create this kind of VM and how to write the data in/out of the VM .. I need suggestion to do this . regards Bala

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Re: [libvirt-users] Is libvirt supported on Citrix Xenserver?
by sharmila radha krishnan 21 Jul '11

21 Jul '11

Hi,  I was finally able to connect to the xenapi hypervisor.  However, once I connect to virsh and give a 'quit' command I get  "* glibc detected *** virsh: double free or corruption (fasttop):". Please find below the actual memory dump.   Note: I have disabled the SSL certificate verification in xenapi_driver.c by setting curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0) & curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0).     [root@sharmila libvirt-0.9.2]# virsh -c "xenapi://localhost" Enter username for localhost: root Enter root's password for localhost: Welcome to virsh, the virtualization interactive terminal.    Type:  'help' for help with commands        'quit' to quit    virsh # list --all  Id Name                 State ----------------------------------   0 Control domain on host: sharmila running   - Control domain on host: sharmila running   - XenServer SDK 5.6.100-47101p import shut off    virsh # quit    *** glibc detected *** virsh: double free or corruption (fasttop): 0x09fcc370 *** ======= Backtrace: ========= /lib/libc.so.6[0xb6fc56c5] /lib/libc.so.6(cfree+0x59)[0xb6fc5b09] /usr/local/lib/libvirt.so.0(virFree+0x42)[0xb760d712] /usr/local/lib/libvirt.so.0[0xb777031d] /usr/local/lib/libvirt.so.0[0xb776ec10] /usr/local/lib/libvirt.so.0[0xb7676017] /usr/local/lib/libvirt.so.0(virUnrefConnect+0x128)[0xb7677888] /usr/local/lib/libvirt.so.0(virConnectClose+0xda)[0xb769ad4a] virsh[0x8065c73] virsh[0x806672f] /lib/libc.so.6(__libc_start_main+0xdc)[0xb6f71e9c] virsh[0x804e0f1] ======= Memory map: ======== 08048000-08079000 r-xp 00000000 08:01 378273     /usr/local/bin/virsh 08079000-0807a000 rw-p 00031000 08:01 378273     /usr/local/bin/virsh 09fa1000-0a060000 rw-p 00000000 00:00 0          [heap] b6b61000-b6b6c000 r-xp 00000000 08:01 182153     /lib/libgcc_s-4.1.2-20080825.so.1 b6b6c000-b6b6d000 rw-p 0000a000 08:01 182153     /lib/libgcc_s-4.1.2-20080825.so.1 b6b6d000-b6b77000 r-xp 00000000 08:01 181027     /lib/libnss_files-2.5.so b6b77000-b6b78000 r--p 00009000 08:01 181027     /lib/libnss_files-2.5.so b6b78000-b6b79000 rw-p 0000a000 08:01 181027     /lib/libnss_files-2.5.so b6b81000-b6b83000 rw-p 00000000 00:00 0 b6b83000-b6d83000 r--p 00000000 08:01 447132     /usr/lib/locale/locale-archive b6d83000-b6d86000 rw-p 00000000 00:00 0 b6d86000-b6d88000 r-xp 00000000 08:01 180820     /lib/libkeyutils-1.2.so b6d88000-b6d89000 rw-p 00001000 08:01 180820     /lib/libkeyutils-1.2.so b6d89000-b6d91000 r-xp 00000000 08:01 377484     /usr/lib/libkrb5support.so.0.1 b6d91000-b6d92000 rw-p 00007000 08:01 377484     /usr/lib/libkrb5support.so.0.1 b6d92000-b6d99000 r-xp 00000000 08:01 182148     /lib/librt-2.5.so b6d99000-b6d9a000 r--p 00007000 08:01 182148     /lib/librt-2.5.so b6d9a000-b6d9b000 rw-p 00008000 08:01 182148     /lib/librt-2.5.so b6d9b000-b6dab000 r-xp 00000000 08:01 180816     /lib/libresolv-2.5.so b6dab000-b6dac000 r--p 0000f000 08:01 180816     /lib/libresolv-2.5.so b6dac000-b6dad000 rw-p 00010000 08:01 180816     /lib/libresolv-2.5.so b6dad000-b6daf000 rw-p 00000000 00:00 0 b6daf000-b6ddf000 r-xp 00000000 08:01 378111     /usr/lib/libidn.so.11.5.19 b6ddf000-b6de0000 rw-p 0002f000 08:01 378111     /usr/lib/libidn.so.11.5.19 b6de0000-b6de1000 rw-p 00000000 00:00 0 b6de1000-b6de3000 r-xp 00000000 08:01 180823     /lib/libcom_err.so.2.1 b6de3000-b6de4000 rw-p 00001000 08:01 180823     /lib/libcom_err.so.2.1 b6de4000-b6e0a000 r-xp 00000000 08:01 378185     /usr/lib/libk5crypto.so.3.1 b6e0a000-b6e0b000 rw-p 00025000 08:01 378185     /usr/lib/libk5crypto.so.3.1 b6e0b000-b6e9f000 r-xp 00000000 08:01 378198     /usr/lib/libkrb5.so.3.3 b6e9f000-b6ea2000 rw-p 00093000 08:01 378198     /usr/lib/libkrb5.so.3.3 b6ea2000-b6ece000 r-xp 00000000 08:01 378160     /usr/lib/libgssapi_krb5.so.2.2 b6ece000-b6ecf000 rw-p 0002c000 08:01 378160     /usr/lib/libgssapi_krb5.so.2.2 b6ecf000-b6ed2000 r-xp 00000000 08:01 377492     /usr/lib/libgpg-error.so.0.3.0 b6ed2000-b6ed3000 rw-p 00002000 08:01 377492     /usr/lib/libgpg-error.so.0.3.0 b6ed3000-b6ed4000 rw-p 00000000 00:00 0 b6ed4000-b6f0f000 r-xp 00000000 08:01 182149     /lib/libsepol.so.1 b6f0f000-b6f10000 rw-p 0003b000 08:01 182149     /lib/libsepol.so.1 b6f10000-b6f1a000 rw-p 00000000 00:00 0 b6f1a000-b6f5a000 r-xp 00000000 08:01 378242     /usr/local/lib/libcurl.so.4.1.0 b6f5a000-b6f5b000 rw-p 00040000 08:01 378242     /usr/local/lib/libcurl.so.4.1.0 b6f5b000-b6f5c000 rw-p 00000000 00:00 0 b6f5c000-b70af000 r-xp 00000000 08:01 180994     /lib/libc-2.5.so b70af000-b70b1000 r--p 00153000 08:01 180994     /lib/libc-2.5.so b70b1000-b70b2000 rw-p 00155000 08:01 180994     /lib/libc-2.5.so b70b2000-b70b5000 rw-p 00000000 00:00 0 b70b5000-b70b8000 r-xp 00000000 08:01 180979     /lib/libdl-2.5.so b70b8000-b70b9000 r--p 00002000 08:01 180979     /lib/libdl-2.5.so b70b9000-b70ba000 rw-p 00003000 08:01 180979     /lib/libdl-2.5.so b70ba000-b70e1000 r-xp 00000000 08:01 182017     /lib/libm-2.5.so b70e1000-b70e2000 r--p 00026000 08:01 182017     /lib/libm-2.5.so b70e2000-b70e3000 rw-p 00027000 08:01 182017     /lib/libm-2.5.so b70e3000-b70e4000 rw-p 00000000 00:00 0 b70e4000-b70f6000 r-xp 00000000 08:01 378165     /usr/lib/libz.so.1.2.3 b70f6000-b70f7000 rw-p 00011000 08:01 378165     /usr/lib/libz.so.1.2.3 b70f7000-b7223000 r-xp 00000000 08:01 378174     /usr/lib/libxml2.so.2.6.26 b7223000-b7228000 rw-p 0012c000 08:01 378174     /usr/lib/libxml2.so.2.6.26 b7228000-b7229000 rw-p 00000000 00:00 0 b7229000-b723e000 r-xp 00000000 08:01 181033     /lib/libpthread-2.5.so b723e000-b723f000 r--p 00015000 08:01 181033     /lib/libpthread-2.5.so b723f000-b7240000 rw-p 00016000 08:01 181033     /lib/libpthread-2.5.so b7240000-b7242000 rw-p 00000000 00:00 0 b7242000-b7258000 r-xp 00000000 08:01 181005     /lib/libselinux.so.1 b7258000-b725a000 rw-p 00015000 08:01 181005     /lib/libselinux.so.1 b725a000-b7389000 r-xp 00000000 08:01 182129     /lib/libcrypto.so.0.9.8e b7389000-b739c000 rw-p 0012e000 08:01 182129     /lib/libcrypto.so.0.9.8e b739c000-b73a0000 rw-p 00000000 00:00 0 b73a0000-b73e4000 r-xp 00000000 08:01 180822     /lib/libssl.so.0.9.8e b73e4000-b73e8000 rw-p 00043000 08:01 180822     /lib/libssl.so.0.9.8e b73e8000-b7419000 r-xp 00000000 08:01 383239     /usr/lib/libcurl.so.3.0.0 b7419000-b741a000 rw-p 00031000 08:01 383239     /usr/lib/libcurl.so.3.0.0 b741a000-b741b000 rw-p 00000000 00:00 0 b741b000-b747b000 r-xp 00000000 08:01 378267     /usr/lib/libxenserver.so.1.3 b747b000-b747f000 rw-p 00060000 08:01 378267     /usr/lib/libxenserver.so.1.3 b747f000-b74a3000 r-xp 00000000 08:01 383129     /usr/lib/libssh2.so.1.0.1 b74a3000-b74a4000 rw-p 00024000 08:01 383129     /usr/lib/libssh2.so.1.0.1 b74a4000-b74a8000 r-xp 00000000 08:01 376977     /usr/lib/libxenstore.so.3.0.0 b74a8000-b74a9000 rw-p 00003000 08:01 376977     /usr/lib/libxenstore.so.3.0.0 b74a9000-b74ac000 rw-p 00000000 00:00 0 b74ac000-b752a000 r-xp 00000000 08:01 378181     /usr/lib/libgcrypt.so.11.5.2 b752a000-b752d000 rw-p 0007d000 08:01 378181     /usr/lib/libgcrypt.so.11.5.2 b752d000-b75a6000 r-xp 00000000 08:01 380857     /usr/lib/libgnutls.so.13.0.6 b75a6000-b75ac000 rw-p 00078000 08:01 380857     /usr/lib/libgnutls.so.13.0.6 b75ac000-b75ad000 rw-p 00000000 00:00 0 b75ad000-b75cc000 r-xp 00000000 08:01 180978     /lib/libdevmapper.so.1.02 b75cc000-b75ce000 rw-p 0001e000 08:01 180978     /lib/libdevmapper.so.1.02 b75cf000-b75d6000 r--s 00000000 08:01 412913     /usr/lib/gconv/gconv-modules.cache b75d6000-b75d7000 r-xp 00000000 08:01 377141     /usr/local/lib/libvirt-qemu.so.0.9.2 b75d7000-b75d8000 rw-p 00000000 08:01 377141     /usr/local/lib/libvirt-qemu.so.0.9.2Aborted    Moreover, Iam not able to start any VMs uisng xencenter after i have started using virsh. It says,  Error: Starting VM 'XenServer SDK 5.6.100-47101p import' - Internal error: another frontend device is already connected to this domain (frontend (domid=0 | kind=vbd | devid=51712); backend (domid=0 | kind=vbd | devid=51712)). Even a reboot of the machine didnt help.   Any pointers on the above 2 issues would be of great help.   Thanks in Advance!   Regards, Sharmila   From: "G Naresh Kumar"naresh.gadepalli(a)gmail.com Sent: Sat, 16 Jul 2011 16:55:16 +0530 To: Matthias Bolte matthias.bolte(a)googlemail.com Cc: libvirt-users(a)redhat.com Subject: Re: [libvirt-users] Is libvirt supported on Citrix Xenserver?   Hi Matthias, > Sorry for the confusion.It was an edited one & hence thetypo. Below is the actual output: # virsh -c xenapi://<myip> Enter username for <myip>: root Enter root's password for <myip>: error: authentication failed: (null) I was not able to get anything in the Xen logs. Somehowfigured out to print the Xen error using the patch given at the link http://osdir.com/ml/libvir- list/2011-06/msg00298.html. It prints"TRANSPORT_FAULT". Any pointers to this error would be much appreciated. Iam also trying to debugthis issue. As per your suggestion, I had used make rpm. But it requires xen-devel pacakge,which I was not able to get for Xen 3.4.2. Is there any way where I canuse the source package and build & install the library without using'make rpm' ? Thanks for all the help. > Regards Naresh > On Thu, Jul 14, 2011 at 7:07 PM, Matthias Bolte <matthias.bolte(a)googlemail.com> wrote: > 2011/7/14 G Naresh Kumar <naresh.gadepalli(a)gmail.com>: >> Hi Maththias, > > Thanks for the help. I finally was able to compile/install libvirt on >> xenserver. >> >> I tried compiling the libvirt 0.9.2 with xen api support. Was able to >> install it successfully. When I tried giving the virsh command, I got an >> ‘authentication failed’ error as shown below. >> >> # virsh -c xenapi://<my local ip> >> Enter username for <mylocalip>: root > >Here you entered root > >> Enter intel123's password for <my local ip>: > >but here it asks for intel123's, that's unexpected. Did you edit this >one before mailing it, or is there really this mismatch? > >> error: authentication failed: (null) > >Outputting (null) here is actually a bug. The only way this can happen >is when the login attempt fails but the XenServer doesn't provide an >error message. Maybe have a look at the XenServer logs to see if it >says something about a failed login attempt. > >> I also tried connecting to the local machine as below, >> >> virsh -c "xenapi:///" >> error: authentication failed: Server name not in URI >> error: failed to connect to the hypervisor > >The XenAPI driver expects a server name. xenapi:/// _could_ be treated >as xenapi://localhost, but it's not implemented that way. > >> Also I am trying to install ruby-libvirt on xenserver, which looks like >> requires libvirt-devel package to be installed. How do I build it from the >> libvirt 0.9.2 source package. > >Running 'make rpm' should build an libvirt-devel RPM package for you. > >> Thanks, >> >> Naresh >> >> On Wed, Jun 15, 2011 at 8:19 PM, Matthias Bolte >> <matthias.bolte(a)googlemail.com> wrote: >>> >>> 2011/6/15 G Naresh Kumar <naresh.gadepalli(a)gmail.com>: >>> > Hi Maththias, >>> > >>> > Thanks a lot for your response!. >>> > >>> > Is there a specific version of libvirt from which xenserver support is >>> > added? I am getting the below error >>> > >>> > "error: invalid argument in libvirt was built without the 'xenapi' >>> > driver" >>> >>> The means that your libvirt version is new enough and contains the >>> XenAPI driver but that it was disabled on configure time, probably >>> because the build server didn't have libxenserver installed and >>> libvirt's configure script automatically disabled the driver because >>> of a missing dependency. >>> >>> > I have installed libvirt from citrix yum repo. >>> >>> Then Citrix build libvirt without XenAPI support. As a long term >>> solution you could report to whom ever is responsible for that repo >>> and request to enabled XenAPI support in that libvirt package. As a >>> short term solution you could build libvirt from source yourself and >>> make sure to get the XenAPI driver enabled. >>> >>> > I am using Xenserver 5.5 with libvirt 0.8.2 and it does not seem to be >>> > working. >>> >>> According to http://libvirt.org/hvsupport.html and the error message >>> 0.8.2 is new enough. >>> >>> Matthias >>> >>> > Thanks, >>> > >>> > Naresh >>> > >>> > On Jun 15, 2011 7:03 PM, "Matthias Bolte" >>> > <matthias.bolte(a)googlemail.com> >>> > wrote: >>> >> 2011/6/15 G Naresh Kumar <naresh.gadepalli(a)gmail.com>: >>> >>> Hi, >>> >>> Is libvirt supported on Citrix Xenserver. I have been searching for >>> >>> the >>> >>> same >>> >>> with little/no luck. >>> >>> If supported, can you point to some links/documents which can help me >>> >>> try >>> >>> out the same. >>> >>> Thanks, >>> >>> Naresh >>> >> >>> >> libvirt can use XenAPI via libxenserver [1]. That should allow you to >>> >> use libvirt with a Citrix XenServer. You can use virsh like this >>> >> assuming you have a libxenserver enabled libvirt: >>> >> >>> >> virsh -c xenapi://my-xen-server >>> >> >>> >> But it's true, there is no documentation about this on the libvirt >>> >> website >>> >> yet. >>> >> >>> >> [1] http://community.citrix.com/display/xs/Download+SDKs >>> >> >>> >> -- >>> >> Matthias Bolte >>> >> http://photron.blogspot.com >>> > >> -- >> I was an atheist till I realized I am GOD >> > >-- > Matthias Bolte >http://photron.blogspot.com > >   >-- >I was an atheist till I realized I am GOD >_______________________________________________ >libvirt-users mailing list >libvirt-users(a)redhat.com >https://www.redhat.com/mailman/listinfo/libvirt-users

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[libvirt-users] Is libvirt supported on Citrix Xenserver?
by G Naresh Kumar 21 Jul '11

21 Jul '11

Hi, Is libvirt supported on Citrix Xenserver. I have been searching for the same with little/no luck. If supported, can you point to some links/documents which can help me try out the same. Thanks, Naresh

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[libvirt-users] problem w/ libvirt-0.8.2-15.el5 and CentOS
by Jim Glennon 20 Jul '11

20 Jul '11

I am running the Eucalyptus 2.0 cloud computing platform on an up-to-date CentOS 5 using the xen hypervisor. While attempting to attach a volume successfully created using jclouds with eucalyptus to a running VM instance, I encountered the following error: libvirt: Requested operation is not valid: Xm driver only supports modifying persistent config (code=55) i also tried attaching manually (i.e. euca-atttach-volume) and experienced the same failure. i found this discussion which mentions a possible libvirt/xen problem: https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=662908 however it does not appear that the fix is available for public consumption (at least i couldn't find it). from the Eucalyptus nc.log: [Tue Jul 19 22:16:47 2011][005714][EUCAINFO ] doAttachVolume() invoked (id=i-4DA80924 vol=vol-59CF0630 remote=/dev/etherd/e0.12 local=/dev/sda2) [Tue Jul 19 22:16:48 2011][005714][EUCAERROR ] libvirt: Requested operation is not valid: Xm driver only supports modifying persistent config (code=55) [Tue Jul 19 22:16:48 2011][005714][EUCAERROR ] AttachVolume() failed (err=-1) XML= [Tue Jul 19 22:16:48 2011][005714][EUCAERROR ] ERROR: doAttachVolume() failed error=1

1 0

[libvirt-users] Migrate failed
by zhang xintao 20 Jul '11

20 Jul '11

Dear All； I try to migrate a kvm guset os from Host A to Host B,but failed ================================================ Host OS : Ubuntu 11.04 server Using libvirt 0.8.8 Using API:QEMU 0.8.8 Running hypervisor:QEMU 0.14.0 =============================================== virsh migrate --live winxp quem+ssh://192.168.10.3/system root(a)192.168.10.3's password: error:operation failed:migration to 'tcp:Host B:49156' failed:migration failed =============================================== read libvirt.org FAQ,add --tunnelled FLAG ================================ virsh migrate --live --tunnelled winxp qume+ssh://192.168.10.3/system root(a)192.168.10.'s password: error: Requested operation is not vaild:cannot perform tunnelled migration without using peer2peer flag ================================================ add p2p flag ================================================ virsh migrate --live --tunnelled winxp qume+ssh://192.168.10.3/system root(a)192.168.10.'s password: error:operation failed:Failed to connect to remote libvirt URI quem+ssh://192.168.10.3/system who can help me ?

1 0

[libvirt-users] cannot perform tunnelled migration without using peer2peer flag
by zhang xintao 19 Jul '11

19 Jul '11

Dear All I try to migration a kvm guest os to another host failed server: ubuntu 11.04 server virsh:migrate --live --tunnelled vm1 qemu+ssh://192.168.10.3/system error:Requested operation is not valid:cannot perform tunnelled migration without using peer2peer flag

5 7