Hi, I’m using restic to backup / of my Ubuntu server and naturally I’m using –one-file-system / -x to not backup e.g. mounted volumes.
I’m also explicitly excluding /mnt, /dev, /run, /proc, /sys and many more.
But reading the docs about excluding files I saw that -x also excludes “virtual filesystems” like /sys and /proc.
To investigate VFSes, I found cat /proc/filesystems and mount | grep -E 'proc|sysfs|tmpfs|devtmpfs.
To see if I can remove some of my excludes and defer them to -x I removed some of them and made a backup, then mounted the snapshot at /mnt/restic.
Curiously, I don’t find /mnt/restic in either /proc/filesystems or the filtered mount | grep …, but it does show up in unfiltered mount as restic on /mnt/restic type fuse (…).
Now one thing I’d like to know is if I removed /mnt from my excludes with this fuse filesystem mounted, would restic back it up?
Or more generally: Does restic ignore all paths I can see with mount?
And finally: Is there simpler method to check which files would be included in a backup compared to actually making one and inspecting the snapshot?
Edit: I found
restic ls latest --ncdu | ncdu -f -in the docs, which skips having to mount the snapshot, but still requires creating one.
Thanks a lot for reading! 