Hi,
I am backing up a Debian 12 client host where I an application uses
Docker and its overlay filesystem:
root@host:~# df -h
Dateisystem Größe Benutzt Verf. Verw% Eingehängt auf
udev 1,9G 0 1,9G 0% /dev
tmpfs 392M 1,3M 391M 1% /run
/dev/mapper/hoas--vg-root 82G 18G 61G 23% /
tmpfs 2,0G 0 2,0G 0% /dev/shm
tmpfs 5,0M 0 5,0M 0% /run/lock
tmpfs 4,0M 0 4,0M 0% /sys/fs/cgroup
/dev/vda1 455M 95M 336M 22% /boot
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/c0fca4e38563165ce1678e4dff6427d0766a892fe269a655a21a9b08064d9d54/merged
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/f132bd655da124f4c9a73d4dbc568ad2c87c8a032a87d1f6664537cd87042639/merged
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/cb43fbd29e50cdcc82c831ced5e8b43f6bd624be4507f2db063883a35fbfca5c/merged
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/cd9ff8530d44d2e6701f04ee0b5c9ed422182fec66e15cad99c20ea04126466d/merged
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/f2f1220522a1aae976b5fead17000947cf3b2318e2eb066493b2d4aeda135b03/merged
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/0d996fc93c6890cfae0378516bf931a929c02e93764e1ed7ee585051bcc7e0d0/merged
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/26f007e3defc1496d3f28569e0c72dffa060a2c9cd2ca5688c514c3b2714cfac/merged
tmpfs 392M 0 392M 0% /run/user/0
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/2225be72fd4f2aa2923f42f6e7f6cd3864b1ca09054118972644d2c0aec06939/merged
overlay 82G 18G 61G 23%
/var/lib/docker/overlay2/0d640041cecf5194e622cc1327d51371e55d46abd732a3d6978871fd00635d6c/merged
Obviously the Docker filesystems are dynamically and I do not want them
to be backed up. I expected the "--one-file-system" parameter for rsync
will take care of it.
But when browsing the backups of this host I see not only the mount
directories but as well directories and files below the mount point.
So why is rsync backing up those files even though I have the
"--one-file-system" parameter set?
I am trying now to work with excludes but shouldn't it work anyways?
Thanks& Greetings
/KNEBB
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