- Users - libvirt List Archives

[libvirt-users] Re : Libvirt Java Bindings
by Kartik Vaishnav 20 Sep '17

20 Sep '17

I am developing a Java Application using Libvirt. I found that the Java Bindings are not in active development. I need to obtain the IP Address of the Domain. In C, it may relate to virDomainInterfaceAddresses. Is there any way to implement it in Java.

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[libvirt-users] How can i limit CPU allowance to 25% of a single core
by Shashwat shagun 19 Sep '17

19 Sep '17

Hi, How do Hard limit a CPU allowance to 25% of a single core in KVM? Regards, Shashwat Shagun

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[libvirt-users] How to configure dnsmasq using libvirt?
by Don Zickus 18 Sep '17

18 Sep '17

Hi, I am working on a project, beaker, where they use anisble scripts to setup an environment with 4 virtual machines. One acts as a server to the other 3. We noticed after the network was setup, the domainname is not properly reported with using the 'hostname' command. We believe that dnsmasq was not correctly configured. Is there a recommended way to setup dnsmasq using libvirt and ansible? Thanks! Cheers, Don ps - please cc me as I am not subscribed to the list

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[libvirt-users] Question: How do i set data transfer quota
by Shashwat shagun 17 Sep '17

17 Sep '17

Hi, I want to limit my user's internet data transfer of his VPS. Is this possible? P.S I’m not talking about the internet speed. I’m talking about data usage limit Regards, Shashwat Shagun me(a)shashwat.tech

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[libvirt-users] Compile libvirt on OSX 10.12
by Homie Pawlowski 16 Sep '17

16 Sep '17

I'm having issues with compiling libvirt on OSX 10.12  ~/Development/github/libvirt/ [master] make /Library/Developer/CommandLineTools/usr/bin/make all-recursive Making all in . Making all in gnulib/lib /Library/Developer/CommandLineTools/usr/bin/make all-am make[3]: Nothing to be done for `all-am'. Making all in include/libvirt make[2]: Nothing to be done for `all'. Making all in src /Library/Developer/CommandLineTools/usr/bin/make all-am CC util/libvirt_util_la-virthread.lo util/virthread.c:272:17: error: 'syscall' is deprecated: first deprecated in macOS 10.12 - syscall(2) is unsupported; please switch to a supported interface. For SYS_kdebug_trace use kdebug_signpost(). [-Werror,-Wdeprecated-declarations] pid_t tid = syscall(SYS_gettid); ^ /usr/include/unistd.h:733:6: note: 'syscall' has been explicitly marked deprecated here int syscall(int, ...); ^ 1 error generated. make[3]: *** [util/libvirt_util_la-virthread.lo] Error 1 make[2]: *** [all] Error 2 make[1]: *** [all-recursive] Error 1 Anyone have any suggestion on how to do so? Thanks, -- HOMERO PAWLOWSKI CLOUD CONSULTANT Red Hat <https://www.redhat.com/> 140 Broadway 24th Floor New York, NY 10005 hpawlows(a)redhat.com <https://red.ht/sig>

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[libvirt-users] DHCP logging settings
by Shannon 14 Sep '17

14 Sep '17

I find that libvirt clogs up syslog with trivial DHCP notifications. I know how to configure alternate logging with dnsmasq directly via 'log-facility' and/or 'quiet-dhcp' options but the XML format used by libvirt appears to have no equivalent options. Is there a way to reduce syslog spam from libvirt without switching to a system-wide dnsmasq service?

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[libvirt-users] network configuration for guest specific dns-servers
by David Ayers 14 Sep '17

14 Sep '17

Hello, similar to how one can configure guest specific IP addresses via mac addresses: <ip address="192.168.122.1" netmask="255.255.255.0" localPtr="yes"> <dhcp> <range start="192.168.122.100" end="192.168.122.254"/> <host mac="00:16:3e:77:e2:ed" name="foo.example.com" ip="192.168.122.10"/> <host mac="00:16:3e:3e:a9:1a" name="bar.example.com" ip="192.168.122.11"/> </dhcp> </ip> We would like to configure guest specific dns-servers as would be done with the --dhcp-option of dnsmasq. I was expecting to be able to do something like: <host mac="00:16:3e:77:e2:ed" name="foo.example.com" ip="192.168.122.10" dhcp-option="dns-server,127.0.0.1" /> but it seems that this isn't the correct approach, as virsh net-edit default removes that attribute definition. Could someone point me to the correct documentation? Thank you! David Ayers -- David Ayers - Team Austria Free Software Foundation Europe (FSFE) [] (http://www.fsfe.org) Join the Fellowship of FSFE! [][][] (https://fsfe.org/join) Your donation powers our work! || (http://fsfe.org/donate)

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[libvirt-users] external snapshot is missing object secrets
by Markus Schade 13 Sep '17

13 Sep '17

Hello, I have virtual machines running with a ceph storage backend. When creating an external qcow2 snapshot with a libvirt version without support for the new object secret passing, the backing file info would list the ceph secret in plain,e.g. # virsh snapshot-create-as vm-123 --no-metadata --disk-only --diskspec sda,file=/var/lib/libvirt/qemu/snapshot/vm-123-wrapper.qcow2 # qemu-img info /var/lib/libvirt/qemu/snapshot/vm-123-wrapper.qcow2 ... backing file: rbd:vms_pool0/disk-123:id=libvirt:key=SECRET:auth_supported=cephx\;none:mon_host=192.168.1.1\:6789\;192.168.1.11\:6789\;192.168.1.21\:6789 While this is problematic from a security perspective (and one of the reasons for the new method), it enabled starting the virtual machine again in case it died or got powered off. With the newer libvirt object secret passing the backing file of the qcow image only references the secret id. # qemu-img info /var/lib/libvirt/qemu/snapshot/vm-123-wrapper.qcow2 ... backing file: json:{"driver": "raw", "file": {"password-secret": "scsi0-0-0-0-secret0", "pool": "vms_pool", "image": "disk-123", "driver": "rbd", "user": "libvirt", "=keyvalue-pairs": "[\"auth_supported\", \"cephx;none\", \"mon_host\", \"192.168.1.1:6789;192.168.1.11:6789;192.168.1.21:6789\"]"}} This is fine as long as the virtual machine is running and with qemu-2.10 it is even possible to block-commit this external snapshot (Yeah!). However, should the VM die or be powered off, it is now longer possible to start the domain or at least recover the data: Could not open backing file: No secret with id 'scsi0-0-0-0-secret0' I guess this problems happens with any disk type that is accessed with object secrets, which is why I would consider this a bug. The question is, should/can this be fixed in libvirt or qemu? I think libvirt should create the snapshot file with the object secret stored in a persistent file (and reference this file in the backing file definition) Best regards, Markus

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[libvirt-users] Regarding Libvirt Java Bindings
by Kartik Vaishnav 12 Sep '17

12 Sep '17

I am developing a Java Application using Libvirt. I found that the Java Bindings are not in active development. I need to obtain the IP Address of the Domain. In C, it may relate to virDomainInterfaceAddresses. Is there any way to implement it in Java.

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[libvirt-users] Failed building wheel for libvirt-python
by Silvia Fichera 08 Sep '17

08 Sep '17

Hi all, I'm installing Openstack using devstack netwon branch in my PC with Ubuntu 16.04 and I have this error. Could someone of you help me please? Thanks Collecting libvirt-python===2.1.0 (from -c /opt/stack/requirements/upper-constraints.txt (line 169)) Using cached libvirt-python-2.1.0.tar.gz Building wheels for collected packages: libvirt-python Running setup.py bdist_wheel for libvirt-python ... error Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-g9ai0P/libvirt-python/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmpsHlvcmpip-wheel- --python-tag cp27: running bdist_wheel running build /usr/bin/pkg-config --print-errors --atleast-version=0.9.11 libvirt /usr/bin/python generator.py libvirt /usr/share/libvirt/api/libvirt-api.xml Found 415 functions in /usr/share/libvirt/api/libvirt-api.xml Found 0 functions in libvirt-override-api.xml Generated 344 wrapper functions Missing type converters: virConnectNodeDeviceEventGenericCallback:1 ERROR: failed virConnectNodeDeviceEventRegisterAny error: command '/usr/bin/python' failed with exit status 1 ---------------------------------------- Failed building wheel for libvirt-python Running setup.py clean for libvirt-python Failed to build libvirt-python Installing collected packages: libvirt-python Running setup.py install for libvirt-python ... error Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-g9ai0P/libvirt-python/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-0i4vHi-record/install-record.txt --single-version-externally-managed --compile: running install running build /usr/bin/pkg-config --print-errors --atleast-version=0.9.11 libvirt /usr/bin/python generator.py libvirt /usr/share/libvirt/api/libvirt-api.xml Found 415 functions in /usr/share/libvirt/api/libvirt-api.xml Found 0 functions in libvirt-override-api.xml Generated 344 wrapper functions Missing type converters: virConnectNodeDeviceEventGenericCallback:1 ERROR: failed virConnectNodeDeviceEventRegisterAny error: command '/usr/bin/python' failed with exit status 1 ---------------------------------------- Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-g9ai0P/libvirt-python/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-0i4vHi-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-g9ai0P/libvirt-python/ +inc/python:pip_install:1 exit_trap +./stack.sh:exit_trap:494 local r=1 ++./stack.sh:exit_trap:495 jobs -p +./stack.sh:exit_trap:495 jobs= +./stack.sh:exit_trap:498 [[ -n '' ]] +./stack.sh:exit_trap:504 kill_spinner +./stack.sh:kill_spinner:390 '[' '!' -z '' ']' +./stack.sh:exit_trap:506 [[ 1 -ne 0 ]] +./stack.sh:exit_trap:507 echo 'Error on exit' Error on exit +./stack.sh:exit_trap:508 generate-subunit 1504797369 129 fail +./stack.sh:exit_trap:509 [[ -z /opt/stack/logs ]] +./stack.sh:exit_trap:512 /home/onossona/devstack/tools/worlddump.py -d /opt/stack/logs World dumping... see /opt/stack/logs/worlddump-2017-09-07-151818.txt for details +./stack.sh:exit_trap:518 exit 1 -- Silvia Fichera

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