juju scp does not preserve original ownership, permissions

[Leon]

Just noticed that after `juju scp`, ownership changes from root to e.g. 1000. Not sure if this is necessarily a bug.
I didn't see a "preserve" option like regular scp has.

root@cc-0:/var/lib/juju/agents/unit-cc-0/charm# ls src -l
total 40
-rwxr-xr-x 1 root root 17205 May 15 18:17 charm.py # BEFORE
-rwxrwxr-x 1 1000 1000 17762 May 15 18:23 charm.py # AFTER

[Vitaly Antonenko (anvial)]

Hi Leon,

Which version of Juju are you using?

I believe that `juju scp` just repeats the behavior of `scp`.

[Leon (sed-i)]

scp has a "preserve" option

```
-p Preserves modification times, access times, and file mode bits from the source file.
```

that I did not see for juju scp (2.9.42-ubuntu-amd64).

[Leon (sed-i)]

Just noticed it says "source file", not "destination file".
For "juju scp" from host into container I'd like to be able to preserve props of destination file.

Again, this is not too critical. More of a question about design's intent than a request.

[John A Meinel (jameinel)]

Note that `juju scp` for K8s *doesn't* invoke scp itself, because there is
no ssh agent running inside of containers. So we have to approximate it
with the equivalent K8s api requests (my understanding is that it is
roughly equivalent to kubectl exec commands.)

I don't know the details for how we emulate scp, it is probably worth
having some similar behaviors there.

On Thu, May 18, 2023 at 10:16 PM Leon <email address hidden> wrote:

> Just noticed it says "source file", not "destination file".
> For "juju scp" from host into container I'd like to be able to preserve
> props of destination file.
>
> Again, this is not too critical. More of a question about design's
> intent than a request.
>
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