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0 votes

slow performance on ssd when using kvm to launch vm's

I believe the Samsung 870 is a consumer level drive which will degrade and have a high likely hood of correlated failure, especially in a multi-node cluster where you are most probably running Ceph. ...
0 votes
Accepted

KVM guest low network speed

I found out what was the problem here. Physical interface MTU was still 1500 - changed it to 9000 and everything seems fine. Well, it still does not make any sense that why the bitrate with 1500MTU ...
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1 vote

Can I have my KVM guests on the same subnet as the host?

We want to have the QEMU/KVM guest VM to be on the same network subnet as the host. In this example, the host IP on the network has IP address 192.168.0.10. The host only has one and only one NIC. ...
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0 votes

Routing KVM VM traffic over wireguard from host OS

At the point your host is making the relevant routing decision, the input interface (iif in your rule) is the bridge device, not viifv1424. Example setup On my system, I'm running a typical libvirt ...
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Linux-on-Linux KVM: Which filesystem should I use for guest and host?

As of this writing, it's been more than 10 years since the original question. And, I daresay that the answer currently isn't as obvious, as it earlier may have been. BTRFS has an interesting feature ...
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Migration disabled: vhost-user backend lacks VHOST_USER_PROTOCOL_F_LOG_SHMFD feature

I managed to the problem. After I remove virtiofs(but a enabled shared memory doesn't prevent snapshot.) in the xml file which exists in /etc/libvirt/qemu, I can do a snapshot. git diff diff --git a/...
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Wake-on-lan to trigger virtual-machine with kvm and libvirt

Very good script. I enhanced it with a loop if a libvirt machine have more than one network card #!/bin/bash virshCmd="ssh root@192.168.xxx.xxx virsh" # listen to udp port 9 for packets, ...
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0 votes
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libvirt live storage migration but keep vm on same host

Don't think of this as related to live migration. This is really just storage backing file replacement. It can be done with the virsh blockcopy command. This can copy contents of an image to an ...
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3 votes
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Windows asking me to sign in with a company email?

This happens due to a UUID collision that affects Windows Autopilot which the UUID and associates it to a company. You can fix this by supplying another UUID, or your system's UUID by inserting the ...

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