Re: 'qemu-img create' to backup encrypted qcow2 - ?

[Peter Maydell]

On Sun, 15 Aug 2021 at 13:07, lejeczek <peljasz@yahoo.co.uk> wrote:
>
>
>
> On 14/08/2021 11:19, Peter Maydell wrote:
> > On Sat, 14 Aug 2021 at 08:24, lejeczek <peljasz@yahoo.co.uk> wrote:
> >> -> $ qemu-img create -f qcow2 -b -o
> >> encrypt.key-secret=3fd57349-3671-4cf2-ab00-f13b8ba00a4d
> >> /00.GLUSTER-mnt/VMs3/enc.locallan.qcow2 -F qcow2
> >> ./enc.locallan.qcow2.bkp
> >> qemu-img: Invalid image size specified. You may use k, M, G,
> >> T, P or E suffixes for
> >> qemu-img: kilobytes, megabytes, gigabytes, terabytes,
> >> petabytes and exabytes.
> > The '-b' option needs a backing_file argument, but the next thing
> > on your commandline is "-o". The option parser has thus assumed you
> > meant to say that the backing-file is named "-o", and has then
> > completely misinterpreted the rest of your commandline as a
> > result. Delete the '-o', or, if you wanted to specify options, put
> > "-o whatever-options-you-wanted" somewhere else than between
> > the '-b' and its argument.

> There is no other syntax I could put together which would
> not end up in:
> ...
> qemu-img: ./enc.locallan.qcow2.bkp: Parameter
> 'encrypt.key-secret' is required for cipher
> Could not open backing image to determine size.

How about you say what command line(s) you tried that gave that
error message ?

-- PMM