Got my storage, How to migrate maschines

[coffe]

Got my storage, How to migrate machines

Hi,
Got my nice SAN , and have it now set up as a ISCSI-> LVM .
Whats the best way of moving local Vservers to this now ?

//Coffe

 

[udo]

Hi,
Got my nice SAN , and have it now set up as a ISCSI-> LVM .
Whats the best way of moving local Vservers to this now ?

//Coffe

Hi,
create a new disk at the SAN-Storage in the VM with the same size as the local one.
Shut down vm.
Look at the logical volume:

lvdisplay

copy the disk

dd if=/var/lib/vz/images/124/vm-124-disk-1.raw of=/dev/drbdvg/vm-124-disk-1 bs=1024k

delete both harddisk from the vm and add the san-harddisk as new (e.g. ide0.0).
power on the vm.
After that you can remove the local diskfile (with the webfronend).

Udo

 

[coffe]

Re: Got my storage, How to migrate machines

Tnx,
Problem is that they are 2qcow2 format. i guess i need to convert them first in some way.

 

[l.mierzwa]

Re: Got my storage, How to migrate machines

Yes, You need to convert to raw format before dd, for example:

kvm-img convert -f raw <old image> <new raw image>

You could probably run:

kvm-img convert -f raw <old image> - | dd of=/dev/drbdvg/<vm disk> bs=1M

to make it faster

 

[coffe]

Tnx,
it worked good.
Have to start migrating +40 servers

 

[Joe]

Hi!

What about putting these instructions somewhere in the HowTo? Its good to know how to do this stuff.

Joe