When I first configured a server I created a set of folders and an additional drive. Today it was reported that these folders are now missing. After looking through /log/messages I see this line, which is different than a similar server that was patched on the same night.
systemd: u01.mount: Directory /u01 to mount over is not empty, mounting anyway.
One fix suggested
mount to recover data. There was no change, and the only folder under the mountpoint is the
lost+found which is empty.
I'm looking for any additional troubleshooting steps to see if the files/folders could be recovered.