On 5/25/2018 8:58 AM, Eric Blake wrote:
Reviving an ancient thread:
On 11/04/2014 02:18 AM, Daniel P. Berrange wrote:
On Mon, Nov 03, 2014 at 11:09:12AM -0500, Brian Rak wrote:
I just ran into an issue where I had about 30 guests get duplicate mac
addresses assigned. These were scattered
Per the documentation,
https://libvirt.org/migration.html#scenarionativedirect , 'virsh migrate
domain dest interface' was a support command. As of 1.3.4 (when
compression support was added), it's not. For example:
# virsh migrate test qemu+ssh://10.0.0.1/system tcp://10.0.0.1/
error: invali
libvirt 1.3.3 seems to have introduced some kind of issue on CentOS 6
(no systemd). After upgrading, libvirt would take an incredibly long
time to get to a state where it would actually respond to a simple
'virsh list' command.
Looking at verbose output showed this repeating at exactly 30s in
Monitor from the router level using netflow/sflow
On 9/10/2015 12:36 PM, Tashi Lu wrote:
Hi all, is it possible to monitor guest's interface's stat which uses
SR-IOV virtual function?
I don't know how qemu/libvirt implement monitoring, if functions like
interfaceStats are implemented in the h
On 3/3/2015 1:49 AM, Vasiliy Tolstov wrote:
2015-03-02 23:41 GMT+03:00 Brian Rak :
In IRC, I was directed to this patch:
https://www.redhat.com/archives/libvir-list/2015-February/msg01212.html ...
which does exactly what I was looking for. It doesn't build cleanly in that
state, but
On 3/23/2015 12:49 PM, Michal Privoznik wrote:
On 23.03.2015 16:02, Fiorenza Meini wrote:
Hi there,
I'm running KVM under Openstack .
When I give virsh list command, I see some VM in NON persistent state.
What does it mean? How can I move it to a persisten state ?
You can do that by running:
After we upgraded to 1.2.12, we've been having issues with libvirt... it
complains that our formerly valid guest definitions are now invalid:
error: Failed to start domain
error: internal error: Cannot instantiate filter due to unresolvable
variables or unavailable list elements: DHCPSERVE
On 3/2/2015 1:41 PM, Brian Rak wrote:
With Libvirt under modern kernels, you can't use type='ethernet'> unless QEMU is running as root.
Running qemu as root is not ideal, but I was able to track down the
issue to this linux change:
http://git.kernel.org/cgit/linux/k
With Libvirt under modern kernels, you can't use type='ethernet'> unless QEMU is running as root.
Running qemu as root is not ideal, but I was able to track down the
issue to this linux change:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca6bb5d7ab22ac79f608fe6cbc
If the guest is modifying memory faster then your network connection can
sync it, the migration will never finish.
I've worked around this in the past by running 'virsh suspend' on the
source host. This will temporarily stop the guest, and allow the
migration to finish.
On 1/22/2015 1:11 PM
I just ran into an issue where I had about 30 guests get duplicate mac
addresses assigned. These were scattered across 30 different machines.
Some debugging revealed that:
1) All the host machines were restarted within a couple seconds of each
other
2) All the host machines had fairly similar
On 11/3/2014 8:43 AM, Andrey Korolyov wrote:
On Mon, Nov 3, 2014 at 4:24 PM, Michal Privoznik wrote:
On 01.11.2014 05:30, Dennis Jacobfeuerborn wrote:
Hi,
I'm trying to find out how to enable fstrim support for libvirt/qemu
guests. Specifically I'm trying to enable this on a CentOS 7 host (qe
Windows has limits on the number of CPUs it can use based on the license
level you have (Standard, Enterprise, etc). You need to present the
CPUs as two physical CPUs with multiple cores to get around this.
On 9/18/2014 5:14 AM, lejeczek wrote:
hi everybody
a qemu-kvm guest gets 16 cpus and
Try creating a blank file on the target system at
/mnt/store01/virt/e7f75b9b-9ed4-4f7e-aa86-e481ab911d6f.qcow2 on 'dewey'.
Migrations really don't go well when the target disk doesn't exist. I'm
not certain why this is, I think the migration feature was mainly built
with shared storage in mind
This sounds a lot like you have IGMP snooping enabled, but you don't
have anything sending the periodic IGMP queries. We've seen things like
this when the network is configured for IGMP, but no querier exists.
Things will work correctly for a few minutes after they start up, then
suddenly sto
The documentation indicates ( via
http://libvirt.org/formatnwfilter.html#nwfelemsRulesProtoMAC ) that
rule types should go in the 'root' chain, however one of the
example rules ( from
http://libvirt.org/git/?p=libvirt.git;a=blob_plain;f=examples/xml/nwfilter/no-mac-broadcast.xml;hb=HEAD
) has
Okay, let's try this another way... how are people dynamically
attaching/removing cdroms from guests, without requiring a guest restart?
On 5/22/2014 4:14 PM, Brian Rak wrote:
I'm trying to unmount a guest cdrom using libvirt_domain_update_device
(via php-libvirt). The gues
On 5/28/2014 10:10 AM, Laine Stump wrote:
On 05/27/2014 02:46 AM, Brian Rak wrote:
Make sure you have:
/proc/sys/net/bridge/bridge-nf-call-iptables = 1
That doesn't make sense. bridge-nf-call-iptables controls whether or not
traffic going across a Linux host bridge device will be
Make sure you have:
/proc/sys/net/bridge/bridge-nf-call-iptables = 1
On 5/26/2014 1:35 PM, Matt LaPlante wrote:
I'm trying to accomplish what I had hoped would be a fairly simple
filtering of traffic to my VMs, but I'm hitting a snag. The VMs are
allowing traffic when I wouldn't expect them to
I'm trying to unmount a guest cdrom using libvirt_domain_update_device
(via php-libvirt). The guest cdrom is currently mounted via Ceph, via
this XML:
In order to unmount it, I'm trying to use this XML:
How are you thinking that a VM would be paused/rebooted via something
other then the hypervisor?
On 4/26/2014 5:46 PM, Taimur Al Said wrote:
Hi there,
Let's assume a libvirt event occurred on a VM, i.e an event like pause
VM or reboot VM or any other libvirt event. Can the VM determine that
On 3/26/2014 3:50 PM, Brian Rak wrote:
Let's say I have some iptables rules defined to restrict guest
traffic. If I restart the hosts firewall 'service iptables restart',
all the guest-specific rules get blown away.
Is there a way to reapply all the guest firewall rules, with
Let's say I have some iptables rules defined to restrict guest traffic.
If I restart the hosts firewall 'service iptables restart', all the
guest-specific rules get blown away.
Is there a way to reapply all the guest firewall rules, without
restarting each individual guest?
It looks like if
If I apply some network limits with domiftune, how do I undo them
(without restarting the VM?)
So let's say I did:
# virsh domiftune SRVID8736 vnet0
inbound.average: 0
inbound.peak : 0
inbound.burst : 0
outbound.average: 0
outbound.peak : 0
outbound.burst : 0
# virsh domiftune SRVID8736 vn
On 3/7/2014 3:53 PM, Pasquale Dir wrote:
The is no *censored* way to restart the libvirt daemon: it just leads
to hang.
This is probably caused by udev... After you restart libvirt, do:
pstree -p `cat /var/run/libvirtd.pid`
You'll probably see a udev process. Kill it, and libvirt should r
Are there any nwfilter rules out there for IPv6? I'm looking for
something similar to clean-traffic, but that works with IPv6.
I found some mailing list posts from 2012 (
https://www.redhat.com/archives/libvirt-users/2012-November/msg00039.html ),
but they don't seem to actually go anywhere.
Thanks, that's very helpful.
On 9/4/2013 10:36 PM, hongming wrote:
On 08/28/2013 05:25 AM, Brian Rak wrote:
If I'm using the SR-IOV Pool assignment method (from
http://wiki.libvirt.org/page/Networking#Assignment_from_a_pool_of_SRIOV_VFs_in_a_libvirt_.3Cnetwork.3E_definition
), h
If I'm using the SR-IOV Pool assignment method (from
http://wiki.libvirt.org/page/Networking#Assignment_from_a_pool_of_SRIOV_VFs_in_a_libvirt_.3Cnetwork.3E_definition
), how would I check how many virtual functions are already in use?
Is there a method other then looping through all the active
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