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Sysadmin/Migrate virtual machine (view source)
Revision as of 00:07, 5 July 2010
, 00:07, 5 July 2010no edit summary
== How to migrate a KVM machine from an LVM partition ==
== How to migrate a file-based guest to LVM ==
treehouse# scp lightwave:/boot/{vmlinuz,initrd}-2.6.31-22-server /srv/vm/kernel/ubuntu/
treehouse# virsh vol-create-as treehouse lightwave 10G
treehouse# virsh attach-disk lightwave /dev/treehouse/lightwave-root vdc
treehouse# virsh console lightwave
lightwave# mkfs.ext4 -L lightwave-root -O flex_bg,extent,uninit_bg,sparse_super /dev/vdc
lightwave# tune2fs -c -1 -i 0 /dev/vdc
lightwave# mount /dev/vdc /mnt
lightwave# rsync -PHAXphax --numeric-ids --delete / /mnt/
lightwave# vim /mnt/etc/fstab
lightwafe# umount /mnt
lightwave# ^D
treehouse# virsh edit lightwave
<os>
<type arch='x86_64' machine='pc-0.11'>hvm</type>
<kernel>/srv/vm/kernel/ubuntu/vmlinuz-2.6.31-22-server</kernel>
<initrd>/srv/vm/kernel/ubuntu/initrd.img-2.6.31-22-server</initrd>
<cmdline>console=tty0 console=ttyS0,115200n8 vga=normal root=LABEL=lightwave-root ro</cmdline>
<boot dev='hd'/>
</os>
<devices>
...
<disk type='block' device='disk'>
<source dev='/dev/treehouse/lightwave-root'/>
<target dev='vda' bus='virtio'/>
</disk>
...
</devices>
#treehouse virsh destroy lightwave
#treehouse virsh start lightwave --console
== How to migrate an LVM-based guest to another host ==
(untested procedure)
(untested procedure)