Difference between revisions of "Moving disk image from one KVM machine to another"
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2.- Once you know exactly wich disks want to migrate and the volume group they are allocated to and their tags, we delete de tags from the disks and then add the tags for the new VM with a command like: | 2.- Once you know exactly wich disks want to migrate and the volume group they are allocated to and their tags, we delete de tags from the disks and then add the tags for the new VM with a command like: | ||
<pre>lvchange --deltag @pve-vm-108 pve-pulpo/vm-108-disk-3 pve-pulpo/vm-108-disk-4</pre> | <pre>lvchange --deltag @pve-vm-108 pve-pulpo/vm-108-disk-3 pve-pulpo/vm-108-disk-4</pre> | ||
| − | In this example, I am moving vm-108-disk3 and vm-108-disk-4 from VM 108 to VM 101 | + | In this example, I am moving vm-108-disk3 and vm-108-disk-4 from VM 108 to VM 101. |
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3.- Next, we add the tag for VM 101 to both disks: | 3.- Next, we add the tag for VM 101 to both disks: | ||
<pre>lvchange --addtag @pve-vm-101 pve-pulpo/vm-108-disk-3 pve-pulpo/vm-108-disk-4</pre> | <pre>lvchange --addtag @pve-vm-101 pve-pulpo/vm-108-disk-3 pve-pulpo/vm-108-disk-4</pre> | ||
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4.- as a convenience, it's better to rename the disk images to reflect the machine they belong to: | 4.- as a convenience, it's better to rename the disk images to reflect the machine they belong to: | ||
<pre>lvrename pve-pulpo/vm-108-disk-3 pve-pulpo/vm-101-disk-1 | <pre>lvrename pve-pulpo/vm-108-disk-3 pve-pulpo/vm-101-disk-1 | ||
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5.- Now, using Proxmox Web Admin, we can delete the disks from the "old VM" and on the new one, we'll have the disks as "unused", so we can add them. | 5.- Now, using Proxmox Web Admin, we can delete the disks from the "old VM" and on the new one, we'll have the disks as "unused", so we can add them. | ||
| + | ''Credits : From kawarmc in Proxmox Forums'' | ||
[[Category: HOWTO]] | [[Category: HOWTO]] | ||
Revision as of 18:14, 24 October 2010
1.- Find out what disk image you want to migrate and wich tags it has with the command:
lvs -o +lv_tags
This will give you something like:
:~# lvs -o +lv_tags LV VG Attr LSize Origin Snap% Move Log Copy% Convert LV Tags data pve -wi-ao 38.12G root pve -wi-ao 16.75G swap pve -wi-ao 8.38G vm-101-disk-1 pve-compartido -wi-a- 80.00G pve-vm-101 vm-102-disk-1 pve-compartido -wi-ao 35.00G pve-vm-102 vm-104-disk-2 pve-compartido -wi-a- 50.00G pve-vm-104 vm-105-disk-1 pve-compartido -wi-ao 50.00G pve-vm-105 vm-106-disk-1 pve-compartido -wi-ao 22.00G pve-vm-106 vm-108-disk-1 pve-compartido -wi-ao 32.00G pve-vm-108 vm-108-disk-2 pve-compartido -wi-ao 150.00G pve-vm-108 vm-113-disk-1 pve-compartido -wi-ao 2.00G pve-vm-113 vm-113-disk-2 pve-compartido -wi-ao 2.00G pve-vm-113 vm-108-disk-3 pve-pulpo -wi-a- 300.00G pve-vm-108 vm-108-disk-4 pve-pulpo -wi-a- 50.00G pve-vm-108
2.- Once you know exactly wich disks want to migrate and the volume group they are allocated to and their tags, we delete de tags from the disks and then add the tags for the new VM with a command like:
lvchange --deltag @pve-vm-108 pve-pulpo/vm-108-disk-3 pve-pulpo/vm-108-disk-4
In this example, I am moving vm-108-disk3 and vm-108-disk-4 from VM 108 to VM 101.
3.- Next, we add the tag for VM 101 to both disks:
lvchange --addtag @pve-vm-101 pve-pulpo/vm-108-disk-3 pve-pulpo/vm-108-disk-4
4.- as a convenience, it's better to rename the disk images to reflect the machine they belong to:
lvrename pve-pulpo/vm-108-disk-3 pve-pulpo/vm-101-disk-1 lvrename pve-pulpo/vm-108-disk-4 pve-pulpo/vm-101-disk-2
5.- Now, using Proxmox Web Admin, we can delete the disks from the "old VM" and on the new one, we'll have the disks as "unused", so we can add them.
Credits : From kawarmc in Proxmox Forums