1 / 9

Xen

Xen. Juan Ortega. Virtualization?. Virtual Machine vs Hypervisor. Desktop virtualization. Hypervisor. Types of Virtualization. Full Virtualization Runs unmodified OS “hosts” as a userspace program to emulate the machine. Some like QEMU can simulate different processors.

magnar
Download Presentation

Xen

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Xen Juan Ortega

  2. Virtualization?

  3. Virtual Machine vs Hypervisor Desktop virtualization Hypervisor

  4. Types of Virtualization Full Virtualization Runs unmodified OS “hosts” as a userspace program to emulate the machine. Some like QEMU can simulate different processors. OS-level Virtualization Emulates a complete OS userspace using operating system facilities. http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/jails-build.htmlv Paravirtualization Relies on modified operating system kernels to work with the hypervisor.

  5. Hosts-Supported Systemsdom0 Guests-Supported Systems domU • Minix • Plan 9 • NetBSD • OpenBSD • FreeBSD (experimental) • OpenSolaris • NetWare • GNU Hurd • OZONE (old) • Linux 3.0 + • Novell’s SUSE Linux • Red Hat Enterprise Linux 5 (RHEL5) • Fedora • Ubuntu (partial) • Debian • Gentoo • Arch Linux • openSUSE • OpenSolaris • OpenBSD? • NetBSD • Linux 3.0 + Unmodified Guest OS using Hardware virtualization (HVM) Allows Guest OSs like Windows to run in “bare metal”. Vt-X and SVM

  6. Getting started $ xm list Name ID Mem VCPU State Time(s) Domain-0 0 934 2 r----- 37.6 -------------------------------------------------------------- $ cat /etc/xen/config_example name = “guest name” kernel = /boot/vmlinuz-2.6-xen.gz maxmem = 256 memory = 256 vcpus = 1 vfb = [ ] disk = [“tap:aio:/opt/xen/images/disk.img,xvda,w”] vif = [“mac=00:16:3e:63:b7:a0, bridge=xenbr0”] --------------------------------------------------------------------------- $ cm create –c /etc/xen/config_example

  7. Storage File as a block device. $ dd if=/dev/zero of=/opt/xen/drive_disk.imgbs=10M count=1024 $ xm block-attack 0 tap:aio:/opt/xen/drive_disk.img /dev/xvda1 w 0 $ mkfs.ext4 /dev/xvda1 $ mount /dev/xvda1 /mnt/ $ cp –a /opt/xen/images/centos-<version>/* /mnt/ disk = [‘tap:aio:/opt/xen/drive_disk.img’] $ xm create –c dive_disk LVMas device-independent physical devices. $ lsmod or $ modprobedm_mod $ pvcreate /dev/sdb1 $ vgcreatedisk_drive /dev/sdb1 $ lvcreate –L <disk size> -nNamedisk_drive $ mount /dev/disk_drive/Name /mnt/hd Disk = [‘phy:/dev/disk_drive/None,sdb1,w’]

  8. Network Each VM can have up to 8 interfaces. vif = [‘’, ‘’, ‘’] vif = [‘ip=“10.0.0.1”,mac=“ae:00:01:02:03:04”’] xm network-attach script=network bridge bridge=xenbr0

  9. Management vlrt-manager

More Related