[libvirt-users] strange and annoying messages from lib-virtd
by Pal, Laszlo
Hi,
Since a few weeks I'm getting lot of messages in syslog in FC20 sent
by libvirt. I've tried to find the reason using our best friend, but
all I can find is some kind of bug related to CPU feature reporting.
I'm not really interested what is the reason of the message (I'm sure
it will be fixed in an upcoming release), but I would like to get rid
of these annoying messages
libvirtd[1319]: internal error: unable to execute QEMU command
'qom-get': guest hasn't updated any stats yet
do you have any idea?
Thank you
L:
10 years, 6 months
[libvirt-users] [VHPC’14] LAST Call for Papers - Deadline in 4 weeks
by VHPC 14
=================================================================
CALL FOR PAPERS
9th Workshop on Virtualization in High-Performance Cloud Computing (VHPC
'14)
held in conjunction with Euro-Par 2014, August 25-29, Porto, Portugal
(Springer LNCS)
=================================================================
Date: August 26, 2014
Workshop URL: http://vhpc.org
Paper Submission Deadline: June 9, 2014 (extended)
Confirmed Keynote Speakers:
Ron Brightwell, Sandia National Laboratory
Hobbes: Using Virtualization to Enable Exascale Applications
and
Helge Meinhard, CERN
CALL FOR PAPERS
Virtualization technologies constitute a key enabling factor for flexible
resource
management in modern data centers, and particularly in cloud environments.
Cloud providers need to dynamically manage complex infrastructures in a
seamless fashion for varying workloads and hosted applications,
independently of
the customers deploying software or users submitting highly dynamic and
heterogeneous workloads. Thanks to virtualization, we have the ability to
manage
vast computing and networking resources dynamically and close to the
marginal
cost of providing the services, which is unprecedented in the history of
scientific
and commercial computing.
Various virtualization technologies contribute to the overall picture in
different
ways: machine virtualization, with its capability to enable consolidation
of multiple
under-utilized servers with heterogeneous software and operating systems
(OSes),
and its capability to live-migrate a fully operating virtual machine (VM)
with a very
short downtime, enables novel and dynamic ways to manage physical servers;
OS-level virtualization, with its capability to isolate multiple user-space
environments and to allow for their co-existence within the same OS kernel,
promises to provide many of the advantages of machine virtualization with
high
levels of responsiveness and performance; I/O Virtualization allows physical
NICs/HBAs to take traffic from multiple VMs; network virtualization, with
its
capability to create logical network overlays that are independent of the
underlying physical topology and IP addressing, provides the fundamental
ground on top of which evolved network services can be realized with an
unprecedented level of dynamicity and flexibility; the increasingly adopted
paradigm of Software-Defined Networking (SDN) promises to extend this
flexibility to the control and data planes of network paths. These
technologies
have to be inter-mixed and integrated in an intelligent way, to support
workloads that are increasingly demanding in terms of absolute performance,
responsiveness and interactivity, and have to respect well-specified
Service-
Level Agreements (SLAs), as needed for industrial-grade provided services.
Indeed, among emerging and increasingly interesting application domains
for virtualization, we can find big-data application workloads in cloud
infrastructures, interactive and real-time multimedia services in the cloud,
including real-time big-data streaming platforms such as used in real-time
analytics supporting nowadays a plethora of application domains. Distributed
cloud infrastructures promise to offer unprecedented responsiveness levels
for
hosted applications, but that is only possible if the underlying
virtualization
technologies can overcome most of the latency impairments typical of current
virtualized infrastructures (e.g., far worse tail-latency). What is more,
in data
communications Network Function Virtualization (NFV) is becoming a key
technology enabling a shift from supplying hardware-based network functions,
to providing them in a software-based and elastic way. In conjunction with
(public and private) cloud technologies, NFV may be used for constructing
the
foundation for cost-effective network functions that can easily and
seamlessly
adapt to demand, still keeping their major carrier-grade characteristics in
terms
of QoS and reliability.
The Workshop on Virtualization in High-Performance Cloud Computing (VHPC)
aims to bring together researchers and industrial practitioners facing the
challenges
posed by virtualization in order to foster discussion, collaboration,
mutual exchange
of knowledge and experience, enabling research to ultimately provide novel
solutions for virtualized computing systems of tomorrow.
The workshop will be one day in length, composed of 20 min paper
presentations,
each followed by 10 min discussion sections, and lightning talks, limited
to 5
minutes. Presentations may be accompanied by interactive demonstrations.
TOPICS
Topics of interest include, but are not limited to:
- Management, deployment and monitoring of virtualized environments
- Language-process virtual machines
- Performance monitoring for virtualized/cloud workloads
- Virtual machine monitor platforms
- Topology management and optimization for distributed virtualized
applications
- Paravirtualized I/O
- Improving I/O and network virtualization including use of RDMA,
Infiniband, PCIe
- Improving performance in VM access to GPUs, GPU clusters, GP-GPUs
- HPC storage virtualization
- Virtualized systems for big-data and analytics workloads
- Optimizations and enhancements to OS virtualization support
- Improving OS-level virtualization and its integration within cloud
management
- Performance modelling for virtualized/cloud applications
- Heterogeneous virtualized environments
- Parallel virtualized - virtualization aware file systems
- Network virtualization
- Software defined networking
- Network function virtualization
- Hypervisor and network virtualization QoS and SLAs
- Cloudbursting
- Evolved European grid architectures including such based on network
virtualization
- Workload characterization for VM-based environments
- Optimized communication libraries/protocols in the cloud
- System and process/bytecode VM convergence
- Cloud frameworks and APIs
- Checkpointing/migration of VM-based large compute jobs
- Job scheduling/control/policy with VMs
- Instrumentation interfaces and languages
- VMM performance (auto-)tuning on various load types
- Cloud reliability, fault-tolerance, and security
- Research, industrial and educational use cases
- Virtualization in cloud, cluster and grid environments
- Cross-layer VM optimizations
- Cloud HPC use cases including optimizations
- Services in cloud HPC
- Hypervisor extensions and tools for cluster and grid computing
- Cluster provisioning in the cloud
- Performance and cost modelling
- Languages for describing highly-distributed compute jobs
- VM cloud and cluster distribution algorithms, load balancing
- Instrumentation interfaces and languages
- Energy-aware virtualization
Important Dates
Rolling Paper registration
June 9, 2014 - Full paper submission (extended)
July 4, 2014 - Acceptance notification
October 3, 2014 - Camera-ready version due
August 26, 2014 - Workshop Date
TPC
CHAIR
Michael Alexander (chair), TU Wien, Austria
Anastassios Nanos (co-chair), NTUA, Greece
Tommaso Cucinotta (co-chair), Bell Labs, Dublin, Ireland
PROGRAM COMMITTEE
Costas Bekas, IBM
Jakob Blomer, CERN
Roberto Canonico, University of Napoli Federico II, Italy
Piero Castoldi, Sant'Anna School of Advanced Studies
Paolo Costa, MS Research Cambridge, England
Jorge Ejarque Artigas, Barcelona Supercomputing Center, Spain
William Gardner, University of Guelph, USA
Balazs Gerofi, University of Tokyo, Japan
Krishna Kant, Temple University, USA
Romeo Kinzler, IBM
Nectarios Koziris, National Technical University of Athens, Greece
Giuseppe Lettieri, University of Pisa, Italy
Jean-Marc Menaud, Ecole des Mines de Nantes, France
Christine Morin, INRIA, France
Dimitrios Nikolopoulos, Queen's University of Belfast, UK
Herbert Poetzl, VServer, Austria
Luigi Rizzo, University of Pisa, Italy
Josh Simons, VMware, USA
Borja Sotomayor, University of Chicago, USA
Vangelis Tasoulas, Simula Research Lab, Norway
Yoshio Turner, HP Labs, USA
Kurt Tutschku, Blekinge Institute of Technology, Sweden
Chao-Tung Yang, Tunghai University, Taiwan
PAPER SUBMISSION-PUBLICATION
Papers submitted to the workshop will be reviewed by at least two
members of the program committee and external reviewers. Submissions
should include abstract, key words, the e-mail address of the
corresponding author, and must not exceed 10 pages, including tables
and figures at a main font size no smaller than 11 point. Submission
of a paper should be regarded as a commitment that, should the paper
be accepted, at least one of the authors will register and attend the
conference to present the work.
Accepted papers will be published in the Springer LNCS series - the
format must be according to the Springer LNCS Style. Initial
submissions are in PDF; authors of accepted papers will be requested
to provide source files.
Format Guidelines:
http://www.springer.de/comp/lncs/authors.html
EasyChair Abstract Submission Link:
https://www.easychair.org/conferences/?conf=europar2014ws
GENERAL INFORMATION
The workshop is one day in length and will be held in conjunction with
Euro-Par 2014, 25-29 August, Porto, Portugal
10 years, 6 months
[libvirt-users] [Solved]：LibvirtError: Operation not supported : JSON monitor is required
by xeon_feng
Hello everyone
I have solved the problem(LibvirtError: Operation not supported : JSON monitor is required).
yajl-devel package must be intalled before compile and install libvirt 1.2.4 .....
then rebuild and install libvirt-python 1.2.4
every thing is OK.....
Hi
Thanks for chenhanxiao(a)cn.fujitsu.com help , I have resole the problem (libvirt 1.2.4 and virt-manager 0.9.0 are not incompatible)..but when I created VM by virt-manager ,it reported :
unable to complete install: 'Opertation not supported: JSON monitor is required.'
Traceback(most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py",line 44, in cb_wrapper callback(asyncjob, *args, **kwargs)
......
LibvirtError: Operation not supported : JSON monitor is required.
what is wrong ?
Please help me....... Tanks a lot ....
Xeon.Feng
last problem: libvirt 1.2.4 and virt-manager 0.9.0 are not incompatible
""""""""""
Hello everyone
I encountered a problem when I completed the update of libvirt from 0.10 to 1.2.4 .
The problem was that virt-manager(version 0.9.0) could not start and reported error : "ImportError: /usr/lib64/libvirt.so.0: version 'LIBVIRT_PRIVIATE_0.10.2' not found (required by /usr/lib64/python2.6/site-packages/libvirtmod.so)".
I found the libvirt.so.0 link file just in the /usr/lib64/ directory , but it was linking to libvirt.so.0.1002.4 .not to the libvirt.so.0.10.2
I made libvirt.so.0 to link to libvirt.so.0.10.2 and restarted virt-manager , virt-manager started normally then restarted libvirtd failure, reporting error:l “ibvirtd: /usr/lib64/libvirt.so.0: version 'LIBVIRT_1.2.3' not found (require by libvirtd) .....”
I made libvirt.so.0 to link to libvirt.so.0.1002.4 and restart libvirtd , libvirtd started normally again.
Please help me to resolve the problem and give me some advise....
Thanks a lot..
Xeon.Feng
"""""""
10 years, 6 months
[libvirt-users] Is tunnelled "managed direct" live migration actually possible?
by Richard W.M. Jones
I have three servers set up as in this diagram:
http://libvirt.org/migration.html#flowmanageddirect
My control application has separate libvirt connections to both the
source and destination nodes. I want to migrate entirely over those
connections, not involving any third (peer-to-peer) connection between
nodes (a third connection isn't possible because of firewalls and SSH
keys).
Is this actually possible? I've been playing with the API and reading
docs, and it seems like "direct managed" migration is simply not
possible :-(
dom.migrate (dconn, libvirt.VIR_MIGRATE_LIVE|libvirt.VIR_MIGRATE_TUNNELLED)
libvirt.libvirtError: Requested operation is not valid: cannot perform tunnelled migration without using peer2peer flag
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top
10 years, 6 months
[libvirt-users] snapshot-current vs snapshot-revert
by bitozoid
If I want to go back to a snapshot, what is the difference between
snapshot-current and snapshot-revert?
What happens to disk sectors of the current state when reverting to
another snapshot? I'm using qemu qcow2.
10 years, 6 months
[libvirt-users] LibvirtError: Operation not supported : JSON monitor is required
by xeon_feng
Hi
Thanks for chenhanxiao(a)cn.fujitsu.com help , I have resole the problem (libvirt 1.2.4 and virt-manager 0.9.0 are not incompatible)..but when I created VM by virt-manager ,it reported :
unable to complete install: 'Opertation not supported: JSON monitor is required.'
Traceback(most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py",line 44, in cb_wrapper callback(asyncjob, *args, **kwargs)
......
LibvirtError: Operation not supported : JSON monitor is required.
what is wrong ?
Please help me....... Tanks a lot ....
Xeon.Feng
last problem: libvirt 1.2.4 and virt-manager 0.9.0 are not incompatible
""""""""""
Hello everyone
I encountered a problem when I completed the update of libvirt from 0.10 to 1.2.4 .
The problem was that virt-manager(version 0.9.0) could not start and reported error : "ImportError: /usr/lib64/libvirt.so.0: version 'LIBVIRT_PRIVIATE_0.10.2' not found (required by /usr/lib64/python2.6/site-packages/libvirtmod.so)".
I found the libvirt.so.0 link file just in the /usr/lib64/ directory , but it was linking to libvirt.so.0.1002.4 .not to the libvirt.so.0.10.2
I made libvirt.so.0 to link to libvirt.so.0.10.2 and restarted virt-manager , virt-manager started normally then restarted libvirtd failure, reporting error:l “ibvirtd: /usr/lib64/libvirt.so.0: version 'LIBVIRT_1.2.3' not found (require by libvirtd) .....”
I made libvirt.so.0 to link to libvirt.so.0.1002.4 and restart libvirtd , libvirtd started normally again.
Please help me to resolve the problem and give me some advise....
Thanks a lot..
Xeon.Feng
"""""""
10 years, 6 months
[libvirt-users] Can I assign a dedicated NIC to a container?
by WANG Cheng D
Dear all,
There are two containers hosted by my host machine. And the host machine has two same 1G NICs. I want to assign a dedicated NIC to one container. The host and the other container share the second NIC. How can I achieve this?
Any comments will be highly appreciated.
Cheng
10 years, 6 months
[libvirt-users] Libvirtd failed to start inside container: libvirt-qemu.so.0: cannot open shared object file: Permission denied
by Konstantin Danilov
Hi all.
I run into trouble, while try to start libvirtd inside docker container
(actually it is LXC container).
During startup libvirtd can't load shared library libvirt-qemu.so.0 (and
strace results looks very odd).
* I run libvirtd as root.
* libvirt-bin - 0.9.8-2ubuntu17
* selinux/apparmor both disabled.
* No other security extension are used.
* No sticky bits are set.
* Required library are present in appropriate folder and have all required
permissions.
* I also successfully load it to other process (python).
* No file locks are holds.
* OS ubuntu linux 12.04 x64 ___running inside LXC container__(docker).
Container is privileged (I can run vm using kvm in it)
* On host system libvirtd starts ok, but stopped now
# uname -a
Linux 27119997ee44 3.11.0-19-generic #33-Ubuntu SMP Tue Mar 11 18:48:34 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux
# dpkg -l | grep libvirt
ii libvirt-bin
0.9.8-2ubuntu17 programs for the libvirt library
ii libvirt0
0.9.8-2ubuntu17 library for interfacing with
different virtualization systems
ii python-libvirt
0.9.8-2ubuntu17 libvirt Python bindings
# libvirtd
libvirtd: error while loading shared libraries: libvirt-qemu.so.0: cannot
open shared object file: Permission denied
# whoami
root
# ls -l `which libvirtd`
-rwxr-xr-x 1 root root 1211712 Apr 16 2012 /usr/sbin/libvirtd
# ldd `which libvirtd`
......
libvirt-qemu.so.0 => /usr/lib/libvirt-qemu.so.0
(0x00007fd6ed29c000)Environment:
....
# ls -l /usr/lib/libvirt-qemu.so.0
-rwxr-xr-x 1 root root 6144 May 6 21:46 /usr/lib/libvirt-qemu.so.0
# strace libvirtd
execve("/usr/sbin/libvirtd", ["libvirtd"], [/* 19 vars */]) = 0
brk(0) = 0x1d74000
.... (~30 lines)
open("/usr/lib/libvirt-qemu.so.0", O_RDONLY|O_CLOEXEC) = -1 EACCES
(Permission denied) <<<< !!!!
stat("/usr/lib", 0x7fffbd127840) = -1 EACCES (Permission denied)--
<<<< !!!!
Before try to load /usr/lib/libvirt-qemu.so.0 libvirtd make only stat,
open, access and brk system calls (no change user or other security related
calls)
# stat /usr/lib
File: `/usr/lib'
Size: 8192 Blocks: 24 IO Block: 4096 directory
Device: 53h/83d Inode: 70 Links: 68
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2014-04-02 12:38:18.171617082 +0000
Modify: 2014-05-06 21:46:39.450449491 +0000
Change: 2014-05-06 21:46:39.450449491 +0000
Birth: -
# selinuxenabled ; echo $?
1
# kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used
on host system -
$ docker -v
Docker version 0.9.1, build 3600720
Thanks
----
Kostiantyn Danilov aka koder.ua
Principal software engineer, Mirantis
skype:koder.ua
http://koder-ua.blogspot.com/
http://mirantis.com
10 years, 6 months
[libvirt-users] Virsh Attach Volume Fails
by Vilobh Meshram
Hi,
When trying to attach a created volume to an instance using the virsh utility I am running into this error :-
[] $ sudo virsh attach-device instance-00000015 disk.xml
error: Failed to attach device from disk.xml
error: internal error unable to execute QEMU command '__com.redhat_drive_add': Device 'drive-virtio-disk21' could not be initialized
For experimental purpose I have libvirt 0.10.2 and QEMU 0.12.1. The volume to be attached is on a remote storage.
Any idea what I might be missing ?
Thanks,
Vilobh
10 years, 6 months
[libvirt-users] libvirt 1.2.4 and virt-manager 0.9.0 are not incompatible
by xeon_feng
Hello everyone
I encountered a problem when I completed the update of libvirt from 0.10 to 1.2.4 .
The problem was that virt-manager(version 0.9.0) could not start and reported error : "ImportError: /usr/lib64/libvirt.so.0: version 'LIBVIRT_PRIVIATE_0.10.2' not found (required by /usr/lib64/python2.6/site-packages/libvirtmod.so)".
I found the libvirt.so.0 link file just in the /usr/lib64/ directory , but it was linking to libvirt.so.0.1002.4 .not to the libvirt.so.0.10.2
I made libvirt.so.0 to link to libvirt.so.0.10.2 and restarted virt-manager , virt-manager started normally then restarted libvirtd failure, reporting error:l “ibvirtd: /usr/lib64/libvirt.so.0: version 'LIBVIRT_1.2.3' not found (require by libvirtd) .....”
I made libvirt.so.0 to link to libvirt.so.0.1002.4 and restart libvirtd , libvirtd started normally again.
Please help me to resolve the problem and give me some advise....
Thanks a lot..
Xeon.Feng
10 years, 6 months
