October 2010 - Users - libvirt List Archives

[libvirt-users] Anyone knows when is the next release for libvirt java bindings?
by Ravi Pawar 25 Nov '10

25 Nov '10

-- Thanks & Regards Ravi Pawar

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[libvirt-users] New wiki pages with libvirt SSH setup instructions
by Justin Clift 09 Nov '10

09 Nov '10

Hi all, Just added some new pages to the wiki, this time covering how to configure remote access to libvirt through SSH, not using root: http://wiki.libvirt.org/page/SSHSetup <--- entry page http://wiki.libvirt.org/page/SSHPolicyKitSetup This has details for several different Linux distributions: * RHEL 5 & 6 * Fedora 11-13 * Centos 5 & 6 * Ubuntu 10.04 Server & Desktop * openSUSE 11.2 onwards Does anyone have info they'd like to include for other distributions? :) Regards and best wishes, Justin Clift

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[libvirt-users] SCSI tape drive device
by Tom Stave 01 Nov '10

01 Nov '10

I have a SCSI tape backup unit attached to a kvm host managed by libvirt. Is there a way to expose the SCSI device in libvirt so I could pass the device to a virtual machine and have the virtual machine control the tape backup? Defining the device as a SCSI disk does not appear to work. In this situation, live migration is not an issue. The VM would always be tied to this host.

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[libvirt-users] libvirt problems. Create bridged network via cmdline?
by Денис Барышев 01 Nov '10

01 Nov '10

Hello! I've faced a weird problem. And I totally can't understand how libvirt handles networks. The thing that i need to do is simple. I create a bridge in my ubuntu host, the following config: *iface eth0 inet manual* * * *auto br0* *iface br0 inet dhcp* * bridge_ports eth0* * bridge_stp on* * bridge_maxwait 0* That's OK, and my bridge turns up automatically. But I don't understand why libvirt can't use it, it always want to create bridge on its own. So that when I try to create bridged network with the command: virsh virsh net-create net.xml net.xml contents: * <network>* * <name>virbreth0</name>* * <bridge name='br0' stp='on' delay='0' />* * </network>* I always get error ===> error: Failed to create network from net.xml error: cannot create bridge 'br0': File exists That's pretty obvious that libvirt wants to create bridge on its own. But what should I do in my specific situation. May be there is a workaround. I appreciate any help and ideas... Thanks for your answers. Best regards, Denis Barishev.

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[libvirt-users] qemu sdl parameters via libvirt
by Bruce Hohl 01 Nov '10

01 Nov '10

Hello List, I run a few VMs via libvirt using '--sdl'. I would like to use qemu parameters -no-quit, -no-frame and -ctrl-grab with libvirt. Does libvirt support a way to use these qemu parameters? Does libvirt provide a way to add these options under <graphics/> in the domain.xml using 'virsh edit domain.xml'? My current <graphics/> is as follows: <graphics type='sdl' display=':0' xauth='/home/admin1/.Xauthority'/> I know I could just create a regular kvm start-up script and include these parameters but I would like to manages all VMs via libvirt & virt-manager.

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[libvirt-users] Compiling libvirt-0.8.4 for NFSv4
by paul.worner＠thomsonreuters.com 28 Oct '10

28 Oct '10

Hi all, Not sure if this will be useful to anyone. Worse, it's probably not complete or correct, but I thought I would throw this out there for comment. I asked earlier about configuring libvirt for NFSv4 support. I wanted to define NFSv4 pool from xml config, but it's not an option. I decided to hack a bit. Added the following to source code: storage_conf.h(417): enum virStoragePoolFormatFileSystemNet { VIR_STORAGE_POOL_NETFS_AUTO = 0, VIR_STORAGE_POOL_NETFS_NFS, VIR_STORAGE_POOL_NETFS_NFS4, VIR_STORAGE_POOL_NETFS_GLUSTERFS, VIR_STORAGE_POOL_NETFS_CIFS, VIR_STORAGE_POOL_NETFS_LAST, }; storage_conf.c(64): VIR_ENUM_IMPL(virStoragePoolFormatFileSystemNet, VIR_STORAGE_POOL_NETFS_LAST, "auto", "nfs", "nfs4", "glusterfs", "cifs") Compiled libvirt and then created storage pool xml: <pool type="netfs"> <name>pool2</name> <source> <host name="test_filer"/> <dir path="/libvirt"/> <format type="nfs4"/> </source> <target> <path>"/usr/local/var/lib/libvirt/images/nfsds2"</path> </target> </pool> 'Virsh pool-create [above xml]' works, using 'mount -t nfs4'. Again, this seemed too easy, so I won't be surprised if things break. However, I was just trying to demonstrate functionality in lab, so failures are fine short term. Please comment on flaws or improvements to this approach. Thanks, Paul Worner

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[libvirt-users] List volumes of a domain
by Andrea Turli 26 Oct '10

26 Oct '10

Hi all, I'm using libvirt java binding (libvirt-java-0.4.6) I'd like to know if the Domain class offers an API to query volumes attached to a particular domain or should I parse the XML domain description? Thanks for your support -- Andrea Turli Ricercatore Direzione Ricerca e Innovazione andrea.turli(a)eng.it Engineering Ingegneria Informatica spa Via Riccardo Morandi, 32 00148 Roma (RM) Tel. +39 06 8307 4710 Fax +39 06 8307 4200 www.eng.it

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[libvirt-users] Fwd: undefining and redefining a Domain from libvirt java bindings
by Ravi Pawar 22 Oct '10

22 Oct '10

hi, i am trying to undefine a domain by using dm.undefine(); and then trying to create one with same name is giving me error saying 'Domain not found: no domain with matching uuid 'aeae9d4e-17cb-b661-a612-88ac677c28c1' i have attached my test program which reproduces the issue. please let me know where i am going wrong? configuration: libvirt : 0.6.3 Java Bindings: 0.4.2 -- Thanks & Regards Ravi Pawar

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[libvirt-users] Virt-v2v
by Mike Hall 21 Oct '10

21 Oct '10

Usual prologue: we're testing on CentOS 5.5, RHEL subscriptions purchased. Now trying to use virt-v2v to transfer Win2008 Server guest from ESXi host to KVM host. Have enabled SSH on ESXi host, and can connect using esx+ssh://esxhost, but procedure fails because nc isn't found on ESXi. Fair enough. BTW, ESXi looks like a radically cut down RH system (/etc/sysconfig being the give-away)? So, using esx:// connection method which presumably uses TLS ... Connection commands I'm trying to use: virt-v2v -f virt-v2v.conf -ic esx://esxhost/?no_verify=1 -op vm_nfs 'HPTRIM Sandbox' virt-v2v -f virt-v2v.conf -ic esx://esxhost/ -op vm_nfs 'HPTRIM Sandbox' I have eliminated libvirt error messages (all #38) relating to /etc/pki/CA/cacert.pem and /etc/pki/libvirt/private/clientkey.pem by creating those files on KVM host according to info on this page: http://libvirt.org/remote.html#Remote_libvirtd_configuration Now I am down to a simple connection refused error message: virt-v2v: Failed to connect to esx://esxhost/: libvirt error code: 38, message: unable to connect to 'esxhost': Connection refused I have also tried suggestion on webpage above regarding these libvirtd.conf settings and restarted libvirtd: tls_no_verify_certificate = 1 key_file = "" cert_file = "" ca_file = "" crl_file = "" ... But no change. The problem may well be the TLS certificates, PKI isn't one of my strong points. I believe the hostnames in the certificates are correct. Which certificates (if any) should be copied to the ESXi host (client or server)? Should I copy any certificates from /etc/vmware/ssl to the KVM host, if so which certificate (rui.crt or rui.key) and where to? There doesn't appear to be anything resembling an iptables firewall in place on the ESXi host. Anyway, any suggestions on what the problem could be greatly appreciated. Michael Hall IT Communications Officer Alice Springs Town Council

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Re: [libvirt-users] Virt-v2v
by Osier 21 Oct '10

21 Oct '10

I guess ESX driver is not compiled for your libvirt version. To if it's complied, e.g. # strings /usr/lib64/libvirt.so.0.8.1 | grep esx -i If you can't see the symbols like "esxDomainCreate, esxDomainDestroy", it's not.(In case of CentOS doesn't strip the symbols of libvirt.) and in that case you need to recompile libvirt from source code and install it. # ./autogen.sh --prefix=/usr --with-esx # ./configure # make # make install Hope it works - Osier ----- "Mike Hall" <MHall(a)astc.nt.gov.au> wrote: > Usual prologue: we're testing on CentOS 5.5, RHEL subscriptions > purchased. > > Now trying to use virt-v2v to transfer Win2008 Server guest from ESXi > host to KVM host. > > Have enabled SSH on ESXi host, and can connect using > esx+ssh://esxhost, but procedure fails because nc isn't found on ESXi. > Fair enough. BTW, ESXi looks like a radically cut down RH system > (/etc/sysconfig being the give-away)? > > So, using esx:// connection method which presumably uses TLS ... > > > Connection commands I'm trying to use: > > virt-v2v -f virt-v2v.conf -ic esx://esxhost/?no_verify=1 -op vm_nfs > 'HPTRIM Sandbox' > virt-v2v -f virt-v2v.conf -ic esx://esxhost/ -op vm_nfs 'HPTRIM > Sandbox' > > I have eliminated libvirt error messages (all #38) relating to > /etc/pki/CA/cacert.pem and /etc/pki/libvirt/private/clientkey.pem by > creating those files on KVM host according to info on this page: > > http://libvirt.org/remote.html#Remote_libvirtd_configuration > > Now I am down to a simple connection refused error message: > > virt-v2v: Failed to connect to esx://esxhost/: libvirt error code: 38, > message: unable to connect to 'esxhost': Connection refused > > I have also tried suggestion on webpage above regarding these > libvirtd.conf settings and restarted libvirtd: > > tls_no_verify_certificate = 1 > key_file = "" > cert_file = "" > ca_file = "" > crl_file = "" > > ... But no change. > > The problem may well be the TLS certificates, PKI isn't one of my > strong points. I believe the hostnames in the certificates are > correct. Which certificates (if any) should be copied to the ESXi host > (client or server)? > Should I copy any certificates from /etc/vmware/ssl to the KVM host, > if so which certificate (rui.crt or rui.key) and where to? > > There doesn't appear to be anything resembling an iptables firewall in > place on the ESXi host. > > Anyway, any suggestions on what the problem could be greatly > appreciated. > > Michael Hall > IT Communications Officer > Alice Springs Town Council > > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users

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