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It's an upstream bug: https://github.com/qemu/qemu/commit/94ef4f337fb6 Roll-back to 2.5.1 and you should see the problem subsist.


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It's not a flashy, but you could always run a shared session over VNC - that does allow multiple connections to share the same session and display. x11vnc is a common example which works well in this situation. Keep in mind that VNC doesn't handle encryption so running through a encrypted SSH/VPN tunnel is highly recommended.


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spice provides direct access to the console, opening spice is pretty much the same thing as sitting in front of the virtual machine. You can't sit two people in front of the same desktop (well you can, but that's not very conventional and requires special hardware. and furniture.) So when the second user connects, he pretty much kicks the chair from under ...


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I see. If these are virtio only, and not virtio-scsi devices, I can reproduce in a VM. I have opened a Bugzilla at https://bugzilla.redhat.com/show_bug.cgi?id=1348664.


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You should be able to image your disks from a snapshot: First you wil need to make sure the Vm is not running: virsh suspend vm Now you can create a snapshot make sure to adjust the size 100M and the name vm-root-snapshot to your own needs. lvcreate -L 100M -n vm-root-snapshot -s /dev/sysvg/vm-root After this you can start the VM again. virsh resume vm ...


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Try this sysctl: net.bridge.bridge-nf-call-arptables=0 net.bridge.bridge-nf-call-ip6tables=0 net.bridge.bridge-nf-call-iptables=0 You need your bridge working as a "switch" without any routing and NATing. And there is no need to set "net.ipv4.conf.all.forwarding" unless you have NATed virtual networtks too. Standard libvirt iptables rules are working well ...


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I don't think it should matter. The host makes this data available to the guest, via a virtual CPU/Core. I can imagine that the host can provide the guest with arbitrary values without really affecting performance that much, since it's the host that ultimately determines performance anyway. On the other hand, if KVM does bare metal virtualisation, maybe ...


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The following is a straight quote from the Red Hat 6 help link, in case it fails. It seems everything is based on using virt-v2v now, and doing an offline xva to kvm isn't so simple. Try the virt-v2v man pages. virt-v2v -ic qemu+ssh://root@vmhost.example.com/system -op pool --bridge bridge_name guest_name Where vmhost.example.com is the host running the ...


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Resize and Expand Internal Partitions in One Step I had an Ubuntu host with a qcow2 guest file image and wanted to resize the disk and expand the appropriate partitions all in one step. It requires you to set up the libvirt guest filesystem utilities, but those are useful to have around anyway. Inspiration from here: http://libguestfs.org/virt-resize.1....


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kpartx works only with raw (uncompressed) images. To mount any image supported by libvirt use guestmount(1): guestmount -a IMAGE MOUNTPOINT


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I don't really understand why the VM is mis-behaving, but I found that if I turned on write-back caching for that VM, it behaves normally.


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The command dommemstat can give you memory stats for a specific domain and with domstats you can get plenty of stats for all domains or just the specified. You can pass the parameter --cpu-total to see the total in the moment. virsh # domstats --cpu-total That command will give you the CPU stats for the domain. If you have virt-manager you can see live ...



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