- Users - libvirt List Archives

[libvirt-users] libvirt: C++ or Java
by Gokhale, Shashibhushan 09 Apr '10

09 Apr '10

Hello, I am planning to develop a management application for managing Redhat Xen and Redhat KVM hypervisors. I am evaluating the Java bindings versus the C++ version of libvirt. As part of evaluation, I could not find meaningful answers to the questions below. Hence, I thought that people on this mailing list would be the most appropriate to comment on them. Can you please let me know your views? 1. Are all functions that are available in C API available in Java? 2. Are Java bindings added along with every enhancement to C API? 3. If answer to above question is negative, typically how long does it takes for the addition of Java bindings for the enhancement? 4. Most of libvirt based third party management applications use which of Java bindings or C API? 5. What are your good/bad experiences while using either of C API or Java bindings? 6. What is your concluding personal recommendation? And finally, since libvirt is a Redhat Emerging Technology project, does Redhat or any other third party service providers provide paid assistance, support? Thanks, Shashi

1 0

[libvirt-users] VIR_DOMAIN_DEVICE_MODIFY_CONFIG flag.
by Sharad Mishra 07 Apr '10

07 Apr '10

Hi, If a resource in a live VM is modified with the flag " VIR_DOMAIN_DEVICE_MODIFY_CONFIG". Is it same as - do not modify the resource now but change it at next boot? Thanks Sharad Mishra IBM

1 0

[libvirt-users] libvirt on Debian - can I safely upgrade?
by Thomas Lutz 05 Apr '10

05 Apr '10

Hi there, I'm currently using libvirt 0.4.6 from the Debian sources with 6 VMs running and since I'm getting random crashes of one of the VMs without any logfile entry in either host or guest (libvirt debugging not turned on as I found out about it just today) I want to upgrade to the latest version (0.7.7 - I guess) from Debian backports. Is this huge upgrade safely possible with just switching sources to backports? Or can I expect problems? Rebooting the VMs is obligatory at the end of the upgrade? Thanks in advance and best regards, Thomas Lutz

1 0

Re: [libvirt-users] question
by mattias 04 Apr '10

04 Apr '10

same error about a missed certificate but the text are in my native language swedish something like CA certificate On Sat, 2010-04-03 at 21:11 +0300, Danel Ahman wrote: > Try to use openvz:///system or openvz://localhost/system > > Danel > > On 03.04.2010, at 21:05, mattias wrote: > > > i try to connect to my local libvirt to use openvz > > openvz://localhost > > but i get an error about a missed certificate > > and when i use > > openvz:///localhost > > only a eror message says could not connect > > libvirt error > > > > _______________________________________________ > > libvirt-users mailing list > > libvirt-users(a)redhat.com > > https://www.redhat.com/mailman/listinfo/libvirt-users >

1 0

[libvirt-users] question
by mattias 04 Apr '10

04 Apr '10

i try to connect to my local libvirt to use openvz openvz://localhost but i get an error about a missed certificate and when i use openvz:///localhost only a eror message says could not connect libvirt error

1 0

[libvirt-users] Creating a private network
by Brown, Matt D. 02 Apr '10

02 Apr '10

I am trying to create a separate private network between the host (domain 0) and the guests. Using virsh, I created a bridge network, virbr1. I can successfully add guest interfaces to the bridge network and communicate between the guests. However, I am unable to communicate between the host and any of the guests. I created eth0:1 on the host and configured virbr1 to forward to eth0:1 (mode="route" dev="eth0:1"), but there is still no communication. I don't think creating eth0:1 is the right thing to do. I think I need to create a virtual interface on domain 0 that is part of the bridge network, virbr1. However, when I run virsh attach-interface with domain-0, it fails. What am I missing?? Matt OS: RHEL 5, Xen kernel virbr1 Bridge Network (First attempt) <network> <name>private</name> <bridge name="virbr2" /> <ip address="169.254.1.1" netmask="255.255.0.0"> </ip> </network> virbr1 Bridge Network (First attempt) <network> <name>private</name> <bridge name="virbr2" /> <ip address="169.254.1.1" netmask="255.255.0.0" /> <forward mode="route" dev="eth0:1" /> </network>

1 0

[libvirt-users] connect libvirt and virtualbox
by angelo alfano 02 Apr '10

02 Apr '10

conn = libvirt.open("vbox:///session") return this error: libvir: VBOX error : internal error unable to initialize VirtualBox driver API Traceback (most recent call last): File "prova.py", line 5, in <module> conn = libvirt.open("vbox:///session") File "/usr/lib/python2.6/dist-packages/libvirt.py", line 163, in open if ret is None:raise libvirtError('virConnectOpen() failed') libvirt.libvirtError: internal error unable to initialize VirtualBox driver API why?

4 10

[libvirt-users] iSCSI supported initiators
by Alexander Pierce 02 Apr '10

02 Apr '10

What initiators does libvirt support for the iSCSI pool? Will it work with qlogic's iSCSI HBAs for instance? --- Alexander Pierce, RHCE Solutions Architect -- Red Hat, Inc. apierce(a)redhat.com -- +1 (530) MR-LINUX (675-4689) Learn. Network. Experience Open Source. The 2010 Red Hat Summit and JBoss World Boston. June 22 - 25, 2010 http://www.theredhatsummit.com http://www.jbossworld.com

2 1

[libvirt-users] advice on creating and reusing connections
by jeremy avnet 01 Apr '10

01 Apr '10

Are there any recommendations as to how often a new connection should be made versus reused? Right now we create a new connection *every time* we hit libvirt for something. We can easily change this so that a single connection is made for a series of libvirt calls, or even so that a single connection is used for the lifetime of the running application. What are the issues to consider when making these choices? We are connecting to qemu:///system. Thank you. .:. brainsik

2 1

[libvirt-users] connection creating
by jeremy avnet 01 Apr '10

01 Apr '10

Are there any recommendations as to how often a new connection should be made versus reused? Right now we create a new connection *every time* we hit libvirt for something. We can easily change this so that a single connection is made for a series of libvirt calls, or even so that a single connection is used for the lifetime of the running application. What are the issues to consider when making these choices? We are connecting to qemu:///system. Thank you. .:. brainsik

2 1