I currently face issues with LVM scanning for devices during a boot of Debian Stretch. The entire OS (but /boot) resides on a LV. I can see the relevant warning messages on the console but they do not seem to show up in any of the logs after boot. (I have tried /var/log/*, demsg, journalctl -b, journactl -u.)

Am I correct in assuming that the LVM scanning happens during the initrd boot phase and that Debian Stretch should ensure that logs from this phase will become part of journalctl -b without further ado? Or do I have to do anything special to persist such log messages?

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