Re: storage backup with encryption on-the-fly ?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


On Thu, Apr 06, 2023 at 15:22:10 +0200, lejeczek wrote:
> Hi guys.
> Is there a solution, perhaps a function of libvirt, to backup guest's
> storage and encrypt the resulting image file?
> On-the-fly ideally.
> If not ready/built-in solution then perhaps a best technique you
> recommend/use?
> I currently use 'backup-begin' on qcow2s, which are LUKS encrypted.

libvirt's block code supports the raw+luks and qcow2+luks encrypted
image formats with qemu. You should be able to use both for backups too:

 <domainbackup mode='push'>
     <disk name='vda' type='file'>
       <driver type='qcow2'/>
       <target file='/tmp/backup-test-images/backup-vda.qcow2'>
         <encryption format='luks'>
           <secret type='passphrase' uuid='d5c7780c-80c4-45eb-bee9-9fbbc1f3847c'/>

Another option would be to use an encrypted device-mapper device via the
block backend.

Lastly if you need any other storage format the 'pull' mode of backups
exposes a (optionally TLS-encrypted) NBD socket from where a client
application can pull the blocks for backup and store them in any way it

[Index of Archives]     [Virt Tools]     [Lib OS Info]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Yosemite News]     [KDE Users]

  Powered by Linux