- Devel - libvirt List Archives

[libvirt] Patch to python-virtinst to allow it to choose svirt labels
by Daniel J Walsh 24 Feb '09

24 Feb '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Also found at least one big bug in python-virtinst, VirtualDisk.py was dropping the "/" between dirname and basename of installation object, when you told it to create the object. I think we want to have a big switch stored in libvirt somewhere saying whether or not we want isolated virtual machines. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkme++4ACgkQrlYvE4MpobM5ewCeP3iaq3HwT/Rw71E2YElbxKyg 66gAoJaCUkQkBvJz80wjztYiwOGsAKaj =GlDN -----END PGP SIGNATURE----- diff -r -u virtinst-0.400.1/virtinst/Guest.py virtinst-0.400.1.new/virtinst/Guest.py --- virtinst-0.400.1/virtinst/Guest.py 2009-01-26 14:33:25.000000000 -0500 +++ virtinst-0.400.1.new/virtinst/Guest.py 2009-02-19 17:36:35.000000000 -0500 @@ -32,6 +32,8 @@ import __builtin__ import CapabilitiesParser import VirtualDevice +import selinux +import random import osdict from VirtualDisk import VirtualDisk @@ -315,8 +317,9 @@ self._install_disk = None # VirtualDisk that contains install media if type is None: - type = "xen" - self.type = type + self.type = "xen" + else: + self.type = type if not location is None: self.location = location @@ -526,6 +529,7 @@ self._vcpus = None self._cpuset = None self._graphics_dev = None + self._seclabel = None self._os_type = None self._os_variant = None @@ -552,12 +556,34 @@ self.disknode = None # this needs to be set in the subclass + self.default_seclabel , self.default_imagelabel = self._default_seclabels() + + while self._seclabel == None: + seclabel, imagelabel = self.gen_seclabels() + if self.is_conflict_seclabel(self.conn, seclabel): + continue + self.set_seclabel(seclabel) + self.set_imagelabel(imagelabel) + def get_installer(self): return self._installer def set_installer(self, val): self._installer = val installer = property(get_installer, set_installer) + # Security context used to secure guest image + def get_imagelabel(self): + return self._imagelabel + def set_imagelabel(self, val): + self._imagelabel = val + imagelabel = property(get_imagelabel, set_imagelabel) + + # Security context used to secure guest process + def get_seclabel(self): + return self._seclabel + def set_seclabel(self, val): + self._seclabel = val + seclabel = property(get_seclabel, set_seclabel) def get_type(self): return self._installer.type @@ -565,7 +591,6 @@ self._installer.type = val type = property(get_type, set_type) - # Domain name of the guest def get_name(self): return self._name @@ -750,7 +775,7 @@ if enabled not in (True, False): raise ValueError, _("Graphics enabled must be True or False") - if enabled == True: + if enabled: gdev = VirtualGraphics(type=gtype) if port: gdev.port = port @@ -807,9 +832,23 @@ """Ensure that devices are setup""" for disk in self._install_disks: disk.setup(progresscb) + # Not sure of this, might want to put this in VirtualDisk class + selinux.setfilecon(disk.path, self._imagelabel) for nic in self._install_nics: nic.setup(self.conn) + def _get_seclabel_xml(self): + xml = "" + if self._seclabel != None: + xml = """ + <seclabel model='selinux'> + <label>%s</label> + <image>%s</image> + </seclabel> +""" % ( self._seclabel, self._imagelabel) + print xml + return xml + def _get_disk_xml(self, install=True): """Return xml for disk devices (Must be implemented in subclass)""" raise NotImplementedError @@ -899,6 +938,7 @@ <devices> %(devices)s </devices> + %(secxml)s </domain> """ % { "type": self.type, "name": self.name, \ @@ -909,7 +949,8 @@ "maxramkb": self.maxmemory * 1024, \ "devices": self._get_device_xml(install), \ "osblob": osblob, \ - "action": action } + "action": action, \ + "secxml": self._get_seclabel_xml()} def start_install(self, consolecb=None, meter=None, removeOld=False, @@ -1026,6 +1067,108 @@ if self.domain is not None: raise RuntimeError, _("Domain has already been started!") + def _default_seclabels(self): + try: + fd = open(selinux.selinux_virtual_domain_context_path(), 'r') + except OSError, (err_no, msg): + raise RuntimeError, \ + "failed to SELinux virtual domains context: %s: %s %s" % (selinux.selinux_virtual_domain_context_path(),err_no, msg) + + label = fd.read() + fd.close() + try: + fd = open(selinux.selinux_virtual_image_context_path(), 'r') + except OSError, (err_no, msg): + raise RuntimeError, \ + "failed to SELinux virtual domains context: %s: %s %s" % (selinux.selinux_virtual_domain_context_path(), err_no, msg) + + image = fd.read() + fd.close() + + return (label, image) + + def is_conflict_seclabel(self, conn, seclabel): + """ + check if security label is in use by any other VMs on passed + connection. + + @param conn: connection to check for collisions on + @type conn: libvirt.virConnect + + @param seclabel: Security Label + @type str: Security label + + @return: True if a collision, False otherwise + @rtype: C{bool} + """ + if not seclabel: + return False + + vms = [] + # get working domain's name + ids = conn.listDomainsID() + for i in ids: + try: + vm = conn.lookupByID(i) + vms.append(vm) + except libvirt.libvirtError: + # guest probably in process of dieing + logging.warn("Failed to lookup domain id %d" % i) + # get defined domain + names = conn.listDefinedDomains() + for name in names: + try: + vm = conn.lookupByName(name) + vms.append(vm) + except libvirt.libvirtError: + # guest probably in process of dieing + logging.warn("Failed to lookup domain name %s" % name) + + count = 0 + for vm in vms: + doc = None + try: + doc = libxml2.parseDoc(vm.XMLDesc(0)) + except: + continue + ctx = doc.xpathNewContext() + try: + try: + label = ctx.xpathEval("/domain/seclabel/label/") + if label[0].content == seclabel: + count += 1 + break + except: + continue + finally: + if ctx is not None: + ctx.xpathFreeContext() + if doc is not None: + doc.freeDoc() + if count > 0: + return True + else: + return False + + def _get_random_mcs(self): + f1 = random.randrange(1024) + f2 = random.randrange(1024) + if f1 < f2: + return "s0:c%s,c%s" % (f1, f2) + else: + if f1 == f2: + return "s0:c%s" % f1 + else: + return "s0:c%s,c%s" % (f2, f1) + + def gen_seclabels(self): + mcs = self._get_random_mcs() + con = self.default_seclabel.split(':') + seclabel = "%s:%s:%s:%s" % (con[0], con[1], con[2], mcs) + con = self.default_imagelabel.split(':') + imagelabel = "%s:%s:%s:%s" % (con[0], con[1], con[2], mcs) + return (seclabel, imagelabel) + def _set_defaults(self): if self.uuid is None: while 1: diff -r -u virtinst-0.400.1/virtinst/VirtualDisk.py virtinst-0.400.1.new/virtinst/VirtualDisk.py --- virtinst-0.400.1/virtinst/VirtualDisk.py 2009-01-26 14:33:25.000000000 -0500 +++ virtinst-0.400.1.new/virtinst/VirtualDisk.py 2009-02-19 19:43:44.000000000 -0500 @@ -172,8 +172,6 @@ """ return "%s:%s" %(self.type, self.path) - - def _get_path(self): return self._path def _set_path(self, val, validate=True): @@ -413,7 +411,7 @@ newpath = self.vol_object.path() elif self.vol_install: newpath = _util.get_xml_path(self.vol_install.pool.XMLDesc(0), - "/pool/target/path") + \ + "/pool/target/path") + "/" + \ self.vol_install.name if newpath and newpath != self.path:

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[libvirt] iptables and libvirt
by Karl Wirth 24 Feb '09

24 Feb '09

Hi, I would like your feedback on the following idea. What if we could flexibly change the iptables rules for the different guests as they are deployed onto the node/host. The idea would be to do all of this within the iptables of the host leaving alone the iptables of the guests themselves. Here are some specifics: - Physical systems typically isolated using firewalls protecting well known ports. - With virt, on shared physical device, use a bridge to give full LAN access to vm - Or a virtual network which is an isolated bridge with no physical connection. Guest can talk to each other directly. Only NAT'd outbound. - The idea is to eventually make it easy to centrally set up iptable rules for guests that are applied in the host iptables. - We would have to be able to migrate the iptables rules and the state data with vm as it moves The benefits of this would be we could: - Create networking controls that provide same isolation as physical systems - Control which VMs can talk to which others Integration option: - Integration in virtd because it knows about the guests and their network parameters. Thanks for your feedback. Best regards, Karl

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[libvirt] About virtualization, libvirt and xen...
by Patrick Archibal 24 Feb '09

24 Feb '09

Hello, I have understand that : ---------------------------- guest ---------------------------- driver_device0_guest ---------------------------- hypervisor ---------------------------- driver_device0_hypervisor ---------------------------- device0 ---------------------------- in order to access to a device, a guest use driver_device0_guest The driver_device0_guest is modified to ask the hypervisor instead of the device0 directly. Then the hypervisor uses the driver_device0_hypervisor in order to ask the device0. It's my understant, maybe it's false. I have few questions : 1 - what is the difference between libvirt and virtio. 2 - why developpers for xen, kvm... must develop drivers each time there are new devices ? Because the driver must ask the hypervisor instead of device directly. 3 - The devices presented to the guest are real or emulated ? (for xen and/or kvm) if devices are real, for example, i can use my graphic card with a virtual machine ?? 4 - Can you tell me why kvm is best or xen is best in enterprise. In my understand, in the future, kvm is in good position because the developpment is integrated in the kernel. Also, i feel xen progress because firms like citrix contribute but it's seems there is no big update since few years. My vision is xen is best for production environnement because it takes advantages of minimal hypervisor code while kvm must be install with the kernel. Also, it seems, performance will be better in kvm with virtio. Can we use virtio with xen ? _________________________________________________________________ Vous voulez savoir ce que vous pouvez faire avec le nouveau Windows Live ? Lancez-vous ! http://www.microsoft.com/windows/windowslive/default.aspx

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[libvirt] [Patch 0/1] enable --checkpoint option in 'virsh save'
by Matt McCowan 24 Feb '09

24 Feb '09

Along the lines of Xen's 'xm save' function with the '-c' checkpoint flag, following up is a patch to basically make-it-so, plus enable it for qemu. Patch merges with CVS, and passes tests as described in the HACKING file. The code implementing the '--live' option for 'virsh migrate' was copied/pasted/mod'ed to create the --checkpoint option for 'virsh save' Regards Matt McCowan

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[libvirt] networking static ip address
by Francisco José Martín 23 Feb '09

23 Feb '09

Hi, we are using the 0.6.0 version and an Ubuntu guest os under KVM virtualization. We have tried several ways to assign a static ip address to the guest os eth0 device on boot, but we didn't success. Is there any easy way to do it? We are trying to have a guest with the ip 192.168.0.1 in the eth0 device, enslaved to the br0 bridge on the host machine, which seems to be a pretty easy setup to test. When the guest OS is booted, the eth0 device exists, but is not up, and doesn't have the IP. Regards, Francisco.

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[libvirt] [PATCH 1/5] Fix a typo in hostdev docs
by Mark McLoughlin 23 Feb '09

23 Feb '09

It's: <address bus='0x06' slot='0x02' function='0x0'/> not: <address>bus='0x06' slot='0x02' function='0x0'</address> Signed-off-by: Mark McLoughlin <markmc(a)redhat.com> --- docs/formatdomain.html | 2 +- docs/formatdomain.html.in | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/formatdomain.html b/docs/formatdomain.html index 17384b3..17dc0cd 100644 --- a/docs/formatdomain.html +++ b/docs/formatdomain.html @@ -485,7 +485,7 @@ ... <hostdev mode='subsystem' type='pci'> <source> - <address>bus='0x06' slot='0x02' function='0x0'</address> + <address bus='0x06' slot='0x02' function='0x0'/> </source> </hostdev> ...</pre> diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index c1e6a16..ee32354 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -397,7 +397,7 @@ ... <hostdev mode='subsystem' type='pci'> <source> - <address>bus='0x06' slot='0x02' function='0x0'</address> + <address bus='0x06' slot='0x02' function='0x0'/> </source> </hostdev> ...</pre> -- 1.6.0.6

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[libvirt] networking with VMs on two nodes
by Andreas Rittershofer 23 Feb '09

23 Feb '09

I have two nodes and on each several virtual machines running under KVM/qemu. I've set up the default-network on each node and so I can: 1.) ping from host do guest 2.) ping from guest to host 3.) ping from guest tu guest But all this is only possibe on each node by itself. What I need now is network connection between a VM on node 1 to another VM on node 2. How to setup this? When both nodes are fine every node runs a few guests. But when one node goes down, all guests have to be run on the remaining node. mfg ar -- Hier könnte keine Signatur stehen.

1 0

[libvirt] Re: [et-mgmt-tools] attach hot usb device
by Cole Robinson 23 Feb '09

23 Feb '09

cc-ing libvir-list (future libvirt questions should be directed there) jmandawg wrote: > Hi, > > > > Quick question, since I can’t get to the qemu monitor anymore, how do I > hot add a usb device (smartphone)? > > Is it possible to do through virsh? > Sure: - Use 'lsusb' to determine the bus and device. Example listing looks like: Bus 001 Device 006: ID 0781:5151 SanDisk Corp. Cruzer Micro 256/512MB Flash Drive - Put hostdev xml in a file: cat << __EOF__ > usb.xml <hostdev mode='subsystem' type='usb'> <source> <address bus='1' device='6'/> </source> </hostdev> __EOF__ - Run 'virsh attach-device {VMNAME} usb.xml' on a running VM. Hope that helps, Cole

2 3

[libvirt] Networking with libvirt
by Andreas Rittershofer 22 Feb '09

22 Feb '09

I want to setup networking under KVM and with libvirt. I read a lot the last two days, but it is not working as desired. I don't want bridging, I want it with a tap-device created via vde_switch. I cannot figure out what to put in /etc/libvirt/qemu/machine.xml and /etc/ libvirt/qemu/networks/network.xml - there is no really good documentation. /var/log/libvirt/qemu/maschine.log shows a lot of parameters when I start the VM with virsh start machine, but I cannot figure out where to set these values or where to set the defaults. mfg ar -- Hier könnte keine Signatur stehen.

1 2

[libvirt] update documentation
by jesse lauren farinacci 22 Feb '09

22 Feb '09

I hit a small snag when following the documentation, specifically the doc says to use <clock sync='localtime'/> when it should say <clock offset='localtime'/>.

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[libvirt] [PATCH] Fix bugzilla link in virsh man page
by Mark McLoughlin 22 Feb '09

22 Feb '09

Note, I haven't generated a new virsh.1 because Pod::Man 2.16 gives a bunch of warnings even with the existing version. Signed-off-by: Mark McLoughlin <markmc(a)redhat.com> --- docs/virsh.pod | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/virsh.pod b/docs/virsh.pod index 8b42ea0..58bba6b 100644 --- a/docs/virsh.pod +++ b/docs/virsh.pod @@ -540,9 +540,9 @@ L<virt-install(1)>, L<xm(1)>, L<virt-top(1)>, L<virt-mem(1)>, L<virt-df(1)>, L<h =head1 BUGS -Bugs can be view on the RedHat bugzilla page under the libvirt +Bugs can be filed in Red Hat bugzilla under the Virtualization Tools/libvirt L<https://bugzilla.redhat.com/> -L<https://bugzilla.redhat.com/bugzilla/buglist.cgi?product=Fedora+Core&compon…> +L<https://bugzilla.redhat.com/buglist.cgi?product=Virtualization+Tools&compon…> =end -- 1.6.0.6

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[libvirt] restore as init script
by Matthias Pfafferodt 21 Feb '09

21 Feb '09

Hello, first i'm using kvm-84 and libvirt 0.6.0 on opensuse 11.1. I try to use the attached script to save some domains on shutdown and restore them on host boot. The script also tries to cleanly shutdown all other domains. The save and shutdown part is working as expected but on system boot the restore of the saved domains fails. If I manually run 'rclibvirtdomains start' after a boot it needs 1 to 3 tries to restore the domain. After that I can run a stop/start cycle of libvirtdomains without problems. How can I debug this problem? After the system boot libvirt seems to have problems to connect to qemu/kvm. The log messages are for a failed start: --- start log --- LC_ALL=C PATH=/bin:/sbin:/usr/bin:/usr/sbin HOME=/ /usr/bin/qemu-kvm -S -M pc -m 1024 -smp 1 -name kvm-virt03 -uuid 864c0b59-705e-5d78-dc3e-1a9de7dd305f -monitor pty -pidfile /var/run/libvirt/qemu//kvm-virt03.pid -boot c -drive file=/dev/virtual/kvm_virt03,if=ide,index=0,boot=on -net nic,macaddr=00:16:3e:00:01:05,vlan=0,model=e1000 -net tap,fd=15,script=,vlan=0,ifname=vnet0 -serial none -parallel none -usb -vnc 192.168.110.78:0 -k de -soundhw es1370 -incoming exec:cat char device redirected to /dev/pts/6 qemu_popen: returning result of qemu_fopen_ops cat: write error: Broken pipe --- end log --- and for a successful start: --- start log --- LC_ALL=C PATH=/bin:/sbin:/usr/bin:/usr/sbin HOME=/ /usr/bin/qemu-kvm -S -M pc -m 1024 -smp 1 -name kvm-virt03 -uuid 864c0b59-705e-5d78-dc3e-1a9de7dd305f -monitor pty -pidfile /var/run/libvirt/qemu//kvm-virt03.pid -boot c -drive file=/dev/virtual/kvm_virt03,if=ide,index=0,boot=on -net nic,macaddr=00:16:3e:00:01:05,vlan=0,model=e1000 -net tap,fd=15,script=,vlan=0,ifname=vnet0 -serial none -parallel none -usb -vnc 192.168.110.78:0 -k de -soundhw es1370 -incoming exec:cat char device redirected to /dev/pts/6 qemu_popen: returning result of qemu_fopen_ops info cpus * CPU #0: pc=0xffffffff80221f1d thread_id=7398 cont --- end log --- Kind regards Matthias Pfafferodt -- Matthias Pfafferodt - http://www.mapfa.de Matthias.Pfafferodt <at> mapfa.de ## Path: System/Virtualization ## Description: libvirtd stop configuration ## Type: yesno ## Default: yes # # On 'libvirtd stop' all running domains are killed. If # LIBVIRTDOMAINS_SHUTDOWN is set to 'yes' all running vm's are given time # for a gracefully shutdown. # LIBVIRTDOMAINS_SHUTDOWN="yes" ## Path: System/Virtualization ## Description: libvirtd timeout ## Type: integer ## Default: 300 # # On 'libvirtd stop' the vm's are ask to shutdown. This optine gives the # maximum number of seconds the script will wait until libvirt is stopped. # LIBVIRTDOMAINS_SHUTDOWN_MAXWAIT=300 ## Path: System/Virtualization ## Description: should domains be saved ## Type: yesno ## Default: yes # # If set to yes domains are saved on shutdown and restored on boot. # LIBVIRTDOMAINS_SAVE="yes" ## Path: System/Virtualization ## Description: domains which should be save and restored ## Type: string ## Default: # # The listed vms are saved on shutdown and restored at boot time # LIBVIRTDOMAINS_SAVE_VM="kvm-virt03" ## Path: System/Virtualization ## Description: save path for domains ## Type: string ## Default: /var/lib/libvirtdomains/save # # Path there the domains should be saved # LIBVIRTDOMAINS_SAVE_DIR="/var/lib/libvirtdomains/save"

1 0

[libvirt] bridge-to-lan interfaces with network type
by Zhengang Li 21 Feb '09

21 Feb '09

Hi All, The documentation on the libvirt website explains the way to define a bridge to LAN network interfaces with a 'bridge' type. E.g.: <interface type='bridge'> <source bridge='br0'/> <mac address='52:54:00:00:00:11'/> </interface> I'm working in a limited environment. Only 'network' type interfaces can be defined for a guest. Is it possible to define a bridge-to-lan interfaces with a 'network' type? The question actually goes to: How to write a network definition xml for libvirt to use as bridge to LAN type NIC in guest? I tried with 'nat' and 'route' forward in network xml, neither works for me. Regards, Zhengang

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[libvirt] can't install fedora guest
by Farkas Levente 19 Feb '09

19 Feb '09

hi, while i try to install fedora-10 guest on centos-5 host i've got the error bellow virt-manager. our setup: virt-manager-0.6.1-1 libvirt-0.6.0-1 kvm-83-1 ----------------------------------------------- Unable to complete install 'libvirt.libvirtError internal error unable to start guest: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/create.py", line 717, in do_install dom = guest.start_install(False, meter = meter) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 926, in start_install return self._do_install(consolecb, meter, removeOld, wait) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 966, in _do_install self.domain = self.conn.createLinux(install_xml, 0) File "/usr/lib64/python2.4/site-packages/libvirt.py", line 973, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: internal error unable to start guest: ----------------------------------------------- while this is in virt-manager's log: ----------------------------------------------- [Fri, 06 Feb 2009 10:27:15 virt-manager 31523] DEBUG (Storage:908) Storage volume 'fedora-i386.img' install complete. [Fri, 06 Feb 2009 10:27:15 virt-manager 31523] DEBUG (Guest:964) Creating guest from: <domain type='kvm'> <name>fedora-i386</name> <currentMemory>524288</currentMemory> <memory>524288</memory> <uuid>75330b36-f8e3-8459-2d71-fb47245d7203</uuid> <os> <type arch='x86_64'>hvm</type> <boot dev='cdrom'/> </os> <features> <acpi/><apic/> </features> <clock offset="utc"/> <on_poweroff>destroy</on_poweroff> <on_reboot>destroy</on_reboot> <on_crash>destroy</on_crash> <vcpu>1</vcpu> <devices> <emulator>/usr/bin/qemu-kvm</emulator> <console type='pty'/> <disk type='file' device='disk'> <source file='/var/lib/libvirt/images/fedora-i386.img'/> <target dev='vda' bus='virtio'/> </disk> <disk type='block' device='cdrom'> <source dev='/dev/hda'/> <target dev='hdc' bus='ide'/> <readonly/> </disk> <interface type='bridge'> <source bridge='eth0'/> <mac address='54:52:00:5d:99:c0'/> <model type='virtio'/> </interface> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' keymap='en-us'/> <sound model='es1370'/> </devices> </domain> [Fri, 06 Feb 2009 10:27:16 virt-manager 31523] ERROR (create:735) Unable to complete install 'libvirt.libvirtError internal error unable to start guest: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/create.py", line 717, in do_install dom = guest.start_install(False, meter = meter) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 926, in start_install return self._do_install(consolecb, meter, removeOld, wait) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 966, in _do_install self.domain = self.conn.createLinux(install_xml, 0) File "/usr/lib64/python2.4/site-packages/libvirt.py", line 973, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: internal error unable to start guest: ' [Fri, 06 Feb 2009 10:27:16 virt-manager 31523] DEBUG (error:76) Uncaught Error: Unable to complete install: 'internal error unable to start guest: ' : Unable to complete install 'libvirt.libvirtError interna l error unable to start guest: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/create.py", line 717, in do_install dom = guest.start_install(False, meter = meter) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 926, in start_install return self._do_install(consolecb, meter, removeOld, wait) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 966, in _do_install self.domain = self.conn.createLinux(install_xml, 0) File "/usr/lib64/python2.4/site-packages/libvirt.py", line 973, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: internal error unable to start guest: ' ----------------------------------------------- -- Levente "Si vis pacem para bellum!"

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[libvirt] Java binding - JVM crashes .. sometimes
by Daniel Schwager 18 Feb '09

18 Feb '09

Hi, since I updated to the new libvirt-version (CVS snapshot of today), my JVM running my multi-thread application "sometimes" will crashes if I open or close libvirt-connection (on KVM hypervisor). I didn't find out the exact szenario - simple junit tests are running well. But inside my main application (multi tread, multiple fast access to libvirt java interface) will crash the JVM. The crash-report looks like ALWAYS like the following 2 examples. Is there a way to - debug this - make the JNI code more robust ? - make the open/close of libvirt more robust ? I think the JVM crashes, because the libvirt crashes. Is there a way to look inside libvirt to see a "crash" of the native libvirt-prog ? My application runs very well with the old version libvirt-0.4.5. I think, problem starts with >= 0.5. One more: Something, it happens, that a virsh -command on the commandline prints out an error message similar to "Can't connect to hypervisor" (I can't reproduce it at the moment). Multiple repeating the command works well. This happens not often - but sometimes.. Now, the Stacktrace of the crashed JVM ** first ... Instructions: (pc=0x0000000001206351) 0x0000000001206341: c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f c9 c3 0x0000000001206351: 49 8b 3e e8 47 f7 fc ff 84 c0 74 18 48 8b 15 bc Stack: [0x0000000002430000,0x0000000002531000], sp=0x000000000252f0d0, free space=1020k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x34a351] V [libjvm.so+0x325201] Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) j org.libvirt.Connect._close(J)I+0 j org.libvirt.Connect.close()V+5 j org.libvirt.Connect.finalize()V+1 v ~StubRoutines::call_stub j java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava/lang/Object;)V+0 j java.lang.ref.Finalizer.runFinalizer()V+45 j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1 j java.lang.ref.Finalizer$FinalizerThread.run()V+11 v ~StubRoutines::call_stub ... ** Second ... Stack: [0x000000002a061000,0x000000002a162000], sp=0x000000002a15e050, free space=1012k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x34a351] V [libjvm.so+0x325201] Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) j org.libvirt.Connect._open(Ljava/lang/String;)J+0 j org.libvirt.Connect.<init>(Ljava/lang/String;Z)V+23 j de.dtnet.virtcontroller.server.command.VDomain.open(Ljava/lang/String;)Lorg/libvirt/Connect;+74 ... Viele Gruesse Daniel Schwager ------------------------------------------------------------------- DT Netsolution GmbH - Taläckerstr. 30 - D-70437 Stuttgart Geschäftsführer: Daniel Schwager, Stefan Hörz - HRB Stuttgart 19870 Tel: +49-711-849910-32, Fax: -932 - Mailto:daniel.schwager@dtnet.de

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[libvirt] A problem about libvir
by 刘刚 18 Feb '09

18 Feb '09

Hello, I have a problem for help. I use the libvir library 0.4.2 on Xen 3.2.0, the host OS is Suse 10.2 . I start a windows domain (windows xp). I use the function virDomainAttachDevice() to attach an iSCSI device to the windows domain,but it failed. I can use this function to attach an iSCSI device to a linux domain. How can I attach an iSCSI device to a windows domain ? or libvir doesn't support attach device to windows domain ? thanks a lot! MOBILE: 13622388220 HUAWEI TECHNOLOGIES CO.,LTD. Address: Huawei Industrial Base Bantian Longgang Shenzhen 518129, P.R.China E-mail: liugang8440265(a)huawei.com www.huawei.com

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[libvirt] [PATCH] Remove invalid ATTRIBUTE_UNUSED
by Cole Robinson 18 Feb '09

18 Feb '09

Stumbled on an ATTRIBUTE_UNUSED that is actually used. Patch attached. Thanks, Cole

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[libvirt] [PATCH] Initialize vm def monitor fd
by Cole Robinson 17 Feb '09

17 Feb '09

We weren't properly initializing the monitor fd value in the VM definition structure. If qemu failed to start up, this could lead to closing stdin, which made all sorts of poo hit the fan. The attached patch fixes this. Thanks, Cole

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[libvirt] Bug in qemud/Makefile.in, compiling CVS-snapshot failed.
by Daniel Schwager 17 Feb '09

17 Feb '09

Hi, i checked out the current CVS snapshot (20090217-1530GMT+1), but compiling failed: sh autogen.sh make rpm .... make[4]: Leaving directory `/root/rpmbuild/BUILD/libvirt-0.6.99/src' make[3]: Leaving directory `/root/rpmbuild/BUILD/libvirt-0.6.99/src' Making all in qemud make[3]: Entering directory `/root/rpmbuild/BUILD/libvirt-0.6.99/qemud' Makefile:1284: *** missing separator. Stop. make[3]: Leaving directory `/root/rpmbuild/BUILD/libvirt-0.6.99/qemud' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/root/rpmbuild/BUILD/libvirt-0.6.99' ... Please adapt the qemud/Makefile.in to use TAB instead of spaces in the "remote_protocol.c: remote_protocol.h" make-target. regards Danny

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[libvirt] [PATCH] Fix daemon TCP listen cleanup
by Cole Robinson 17 Feb '09

17 Feb '09

Just looking through the code, I stumbled on a bug in a cleanup routine in the daemon. Patch attached. Thanks, Cole

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[libvirt] [PATCH] Detect bridge name collisions when defining a virtual network
by Cole Robinson 17 Feb '09

17 Feb '09

The attached patch is a partial fix for rhbz 479622. If a virtual network is defined with an explicit bridge name, make sure it doesn't collide with other virtual network bridge names. Thanks, Cole

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[libvirt] [PATCH 1/4] fix problem with MKDIR_P vs mkdir_p
by Maximilian Wilhelm 17 Feb '09

17 Feb '09

From: Matthias Bolte <photon(a)upb.de> configure defines mkdir_p but src/Makefile.am uses MKDIR_P --- src/Makefile.am | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/src/Makefile.am b/src/Makefile.am index 9d934b4..eff9039 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -589,6 +589,8 @@ endif endif EXTRA_DIST += $(LXC_CONTROLLER_SOURCES) +MKDIR_P = $(mkdir_p) + install-exec-local: $(MKDIR_P) "$(DESTDIR)$(localstatedir)/cache/libvirt" $(MKDIR_P) "$(DESTDIR)$(localstatedir)/lib/libvirt/images" -- 1.5.6.5

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[libvirt] Network Configuration question
by Remko Nolten 17 Feb '09

17 Feb '09

Hi! For a shared virtual hosting project with some friends we need a pretty specialized network configuration. Because we have virtually no time for experimenting (no pun intended), and the hosting organization has no experience with libvirt/KVM configurations they suggested to try and ask here. So, this is the situation: We have a server with one physical connection. Each user gets one virtual machine with its own IP-address (we have our own ip-range). The hosting organization gives us one "main" address 'A' with netmask 255.255.255.0 (/24) and a default gateway for our host machine. Besides this we get a number of addresses B1, B2, etc. with netmask 255.255.255.255 (/32) and without a default gateway. The switch just routes the traffic to our server for each ip-address we own (A and Bn). According to our hosting organization, the normal solution is to configure a loopback interface for each of the ip-addresses on the server so you can configure your software just to use one of the addresses. But we are not sure how this will work out in our virtual environment. Our intuition tells us we need to use the routing network forwarding mode, but when we bring the server to the data center we don't want to have any surprises. :) Here at home I don't have to possibility to create similar circumstances as in the data center due to some restriction from my ISP, so I hope someone can tell me if our intuition is correct or that we need to use some other method. Thanks in advance! -- Remko Nolten Tel: 06-45600767 E-mail: remko(a)nolten.nu

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[libvirt] [PATCH] Don't check volume format for lvm backing store
by Cole Robinson 16 Feb '09

16 Feb '09

With the recently added COW support, we were trying to validate the passed logical volume's format, when there won't ever be one pulled from the xml (logical volumes don't have any valid format values). Just remove this check, and let any validation in this manner be done by the actual call to 'lvcreate'. Thanks, Cole

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[libvirt] [PATCH] Fix generating python bindings
by Cole Robinson 16 Feb '09

16 Feb '09

The recent API additions virSaveLastError and virFreeError upset the python bindings generator. Add a rule to explicitly skip them for the bindings, since (as far as I can tell) the libvirtError class provides everything we need. Thanks, Cole

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