Re: importing luks-encrypted lvm volume

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On 11/3/22 9:25 AM, Erik Huelsmann wrote:
> Hi,
> 
> I'd like to use virt-install to create a new VM which imports an
> existing volume. This volume is luks-encrypted. When I manually attach
> the VM with the correct encryption settings, the resulting XML looks
> like this:
> 
>     <disk type='block' device='disk'>
>       <driver name='qemu' type='raw' cache='none' io='io_uring'/>
>       <source dev='/dev/p1/my-vm.pgdata' index='2'/>
>       <backingStore/>
>       <target dev='sdb' bus='scsi'/>
>       <encryption format='luks'>
>         <secret type='passphrase'
> uuid='27a023d0-5afa-11ed-9822-c3a776c2fdff'/>
>       </encryption>
>       <alias name='scsi0-0-0-1'/>
>       <address type='drive' controller='0' bus='0' target='0' unit='1'/>
>     </disk>
> 
> I'm able to create all of the above XML with the exception of
> 
>       <encryption format='luks'>
>         <secret type='passphrase'
> uuid='27a023d0-5afa-11ed-9822-c3a776c2fdff'/>
>       </encryption>
> 
> Is there a way to have virt-install (or virt-xml) generate this as part
> of the VM definition?

It's not pretty but the arguments to `--disk` should do it. Put them in
the same `--disk` string that configures the rest of the device

--disk
xpath0.set=./encryption/@format=luks,xpath1.set=./encryption/secret/@type=passphrase,xpath2.set=./encryption/secret/@uuid=27a023d0-5afa-11ed-9822-c3a776c2fdff

- Cole




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