[Podman] Re: disk space below ~/.local/share/containers/storage/overlay

After stop of a container massive data remains below ~/.local/share/containers/storage/overlay Steps to reproduce: cups@srap57dxr1:~> podman image list REPOSITORY TAG IMAGE ID CREATED SIZE localhost/sles15-sp6-v73-sp1 latest caeabd52aa4a 46 hours ago 26 GB localhost/sles15-sp6-v73 latest 690f90eaed0f 46 hours ago 20.2 GB registry.suse.com/bci/bci-base 15.6 075e3ce8c342 11 days ago 125 MB cups@srap57dxr1:~> podman run --tz='Europe/Berlin' -d -p 2022:22 sles15-sp6-v73 cups@srap57dxr1:~> podman container list CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 43e7d4f12f27 localhost/sles15-sp6-v73:latest 10 minutes ago Up 10 minutes 0.0.0.0:2022->22/tcp gracious_sinoussi This start creates two new dirs below /home/cups/.local/share/containers/storage/overlay: srap57dxr1:/home/cups/.local/share/containers/storage/overlay # ls -ltr | tail -2 drwxr-xr-x 2 cups root 17408 Nov 13 11:14 l drwx------ 6 cups root 1024 Nov 13 11:14 fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba srap57dxr1:/home/cups/.local/share/containers/storage/overlay # du -sh fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba 5.4G fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba Now I kill the container with: cups@srap57dxr1:~> podman kill 43e7d4f12f27 43e7d4f12f27 The dirs remain: srap57dxr1:/home/cups/.local/share/containers/storage/overlay # ls -ltr | tail -2 drwxr-xr-x 2 cups root 17408 Nov 13 11:14 l drwx------ 5 cups root 1024 Nov 13 11:27 fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba and occupy ~5.4G space: srap57dxr1:/home/cups/.local/share/containers/storage/overlay # du -sh fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba 5.4G fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba and this on any start/stop of the container. I did a closer look what is there below such a directory. We use such containers to test the update of our server software to the next release. Such update brings ~1 GByte gzip'ed packages and files and below such a directory is exactly what was updated, binary identical with what was stored as new versions of the files, for example a new delivered file '/opt/lib/sisis/etc/pos.rc' is there as fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba/diff/opt/lib/sisis/etc/pos.rc like many other files: # find fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba | grep /opt/lib/sisis | wc -l 2494 # find fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba | grep /usr/local/sisis-pap | wc -l 27879 Questions: 1) Why this data remains after stop of container? 2) Can I just remove this directory with 'rm -r ....'? 3) I did a test and renamed such directory to xxxx.away fb646bf8e1eb6f157c8b2430897df11da78a9e7c0e38858959066d5c40a2adba.away No error message showed up on next start. Any hits on this? Thanks -- Matthias Apitz, ✉ guru(a)unixarea.de, http://www.unixarea.de/ +49-176-38902045 Public GnuPG key: http://www.unixarea.de/key.pub Annalena Baerbock: "We are fighting a war against Russia ..." (25.1.2023) I, Matthias, I am not at war with Russia. Я не воюю с Россией. Ich bin nicht im Krieg mit Russland. _______________________________________________ Podman mailing list -- podman(a)lists.podman.io To unsubscribe send an email to podman-leave(a)lists.podman.io