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| | == '''KVM''' == | | == '''KVM''' == |
| − | | + | Show all Virtual Machines: |
| − | | |
| − | '''Creating copy of an existing VM''':<br/>
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| − | Find the VM you want to save.
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| | <pre> | | <pre> |
| − | [root@localhost ~]# lvdisplay
| + | lvdisplay |
| − | --- Logical volume ---
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| − | LV Path /dev/vg1/kvm101_img
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| − | LV Name kvm101_img
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| − | VG Name vg1
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| − | LV UUID ZCfjys-Ut9b-2iKZ-VFen-DG2i-79Hn-dfUnOf
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| − | LV Write Access read/write
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| − | LV Creation host, time ,
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| − | LV Status available
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| − | # open 1
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| − | LV Size 30.00 GiB
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| − | Current LE 960
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| − | Segments 1
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| − | Allocation inherit
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| − | Read ahead sectors auto
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| − | - currently set to 1024
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| − | Block device 253:0
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| | </pre> | | </pre> |
| − | Shutdown it | + | Shutdown VM |
| | <pre> | | <pre> |
| | virsh shutdown kvm101 | | virsh shutdown kvm101 |
| | </pre> | | </pre> |
| − | Now create the backup
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| − | <pre>
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| − | dd if=/dev/vg1/kvm101_img | gzip | dd of=/home/kvm101_backup.gz bs=4096
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| − | </pre>
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| − | Make sure you replaced ''vg1'' with proper Volume Group.<br/>
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| − | This archive can be used either for general backup or for cloning, migrating VMs.<br/>
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| − | '''Restoring backup:'''<br/>
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| − | Backup file can be sent to remote server:
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| − | <pre>
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| − | scp /home/kvm101_backup.gz root@remote.server.com:/home/
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| − | </pre>
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| − | See man scp if any issues.<br/>
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| − | Create a logical volume the same size as the original one:
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| − | <pre>
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| − | lvcreate -n kvm101_img --size 30G /dev/vg1
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| − | </pre>
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| − | Restore backup to the new volume
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| − | <pre>
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| − | dd if=/home/kvm101_backup.gz | gzip -d | dd of=/dev/vg1/kvm101_img bs=4096
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| − | </pre>
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| − | If source VM became useless it can be removed
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| − | <pre>
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| − | lvremove /dev/vg1/kvm101_img
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| − | </pre>
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| − |
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| | == '''OpenVZ''' == | | == '''OpenVZ''' == |
Revision as of 14:53, 28 March 2013
KVM
Show all Virtual Machines:
lvdisplay
Shutdown VM
virsh shutdown kvm101
OpenVZ
Show all OpenVZ containers
vzlist -a
