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http://kashyapc.com/ Raw image is a blob of data exposed directly in VM as block device, it can't snapshot. qemu-img is able to import data from raw image into qcow2 image, and save it as snapshot Pr... 阅读全文
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KVM Kernel-based Virtual Machine Internals, code and more http://slides.com/braoru/kvm#/ What behind KVM QEMU and KVM architecture overview KVM internals Very small Introduction to Libvirt KVM in 5 s... 阅读全文
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KVM虚拟化技术生态环境介绍 http://xanpeng.github.io/wiki/virt/kvm-virtulization-echosystem-intro.html kvm和qemu/qemu-kvm的关系 qemu vs. qemu-kvm: 从qemu 1.3开始，kvm userspace code就维护在qemu mainline中(git clone https://gi... 阅读全文
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http://www.ilsistemista.net/index.php/virtualization/43-kvm-scalability-and-consolidation-ratio-cache-none-vs-cache-writeback.html?limitstart=0 In the latest ten years, full-virtualization technologie... 阅读全文
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http://www.ilsistemista.net/index.php/virtualization/42-kvm-virtio-paravirtualized-drivers-why-they-matter.html?limitstart=0 As you probably already know, there are basically two different schools in ... 阅读全文
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Almost one year ago, I checked how different cache settings affected KVM storage subsystem performance. Results were very clear: to obtain good I/O speed, you had to use the write-back or none cache p... 阅读全文
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http://www.ilsistemista.net/index.php/virtualization/1-virtual-machines-performance-comparison.html?limitstart=0 Today, “Virtual machine” seems to be a magic words in the computer industry. Why? Simpl... 阅读全文
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KVM I/O slowness on RHEL 6 http://www.ilsistemista.net/index.php/virtualization/11-kvm-io-slowness-on-rhel-6.html?limitstart=0 Over one year has passed since my last virtual machine hypervisor compari... 阅读全文
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访问Hard Drive 使用-hda –hdb qemu-system-x86_64 -enable-kvm -name ubuntutest -m 2048 -hda ubuntutest.img -hdb ubuntutest1.img -boot c -vnc :19 -net nic,model=virtio -net tap,ifname=tap0,script=no,downscri... 阅读全文
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Administrating Virtual Machines with QEMU MonitorWhen QEMU is running, a monitor console is provided for performing interaction with the user. Using t... 阅读全文