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

[lejeczek]

On 15/08/2021 13:17, Peter Maydell wrote:
> 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
Almost identical to the original, only take out 'options' 
out and put in front of '-b' (or any other place in cmd args 
order)