Kopia stdin-file

Hello,

I have been trying to use stdin-file to backup some zvols. I use it like this:

zfs snapshot $vol@kopia-snap
zfs clone "$vol@kopia-snap" "$vol.clone"
dd if=/dev/zvol/$vol.clone bs=16M | $KOPIA snapshot create --stdin-file=/k8s-dumps/$vol-$DATE.dd.raw -

My problem is that every zvol snapshot gets its own snapshot(see image). I would like to show all my zvols backups in one single snapshot.

Is this possible somehow?

I found a solution, kind of, but its not that great.
If i create and enter a directory before running dd if… |kopia like this,

mkdir -p /tmp/storage-dd-$vol
cd /tmp/storage-dd-$vol
dd if=/dev/zvol...|kopia snapshot....

Then I get a snapshot for every zvol in the main view, its better, but still not great.