Btrbk runs backups just fine, but no files are actually backed up.

[ThoriumTextile]

Hello, as the title says, only (some?) folders are backed up. Here's my configuration file.

Currently I'm using OpenSUSE Tumbleweed, with kernel: 5.14.14-1-default

[digint]

Are you sure all your folders specified in subvolume configs are actually btrfs subvolumes? You can list your subvolumes using lsbtr /mnt/btroot (as of btrbk-0.30.0), or btrfs sub list -a /mnt/btroot.

Also note that nested btrfs subvolumes will not be included in snapshots/backups.

[ThoriumTextile]

Here's lsbtr's output. Note that it includes both "/" and "/mnt/btroot" outputs.

I'm not totally sure, but i think that "/" is a subvolume labeled "@", from which "@boot", "@opt", etc... nest under. Those were automatically created by the openSUSE installer.

[digint]

Oh I messed something, you have a (sadly quite common) mistake in your btrbk.conf:

What you do here is defining a target for subvolume @/usr/local only (btrbk does not care about leading whitspaces, in your config the target only affects subvolume @/usr/local.

btrbk.conf.5:

Multiple 'target' sections are allowed, in any context: a 'target' defined in 'volume' or global context will be used for all underlying 'subvolume' sections (hint: run "btrbk list" or "btrbk config print" to see the resulting configuration).

In the btrbk

volume /mnt/btroot/
	snapshot_dir @/.snapshots/btrbk
	subvolume @
	...
	subvolume @/usr/local
	
target send-receive /mnt/backups/@snapshots/btrbk

should be:

target send-receive /mnt/backups/@snapshots/btrbk
volume /mnt/btroot/
	snapshot_dir @/.snapshots/btrbk
	subvolume @
	...
	subvolume @/usr/local

This way the target is inherited in all contexts (volume / subvolume)

[digint]

I'm not totally sure, but i think that "/" is a subvolume labeled "@", from which "@boot", "@opt", etc... nest under. Those were automatically created by the openSUSE installer.

Yes @ is a common alias for the root filesystem mounted a /. /.snapshots is probably created by you the packet manager, (or snapper?)

Run lsbtr -l /, which will print the mount points as well.

[ThoriumTextile]

Okay so, i fixed the config file and now it seems like it kinda works (binaries and things like /etc do get backed up), however as you said with:

Also note that nested btrfs subvolumes will not be included in snapshots/backups.

directories like @opt, @root, @srv, etc... Do not get backed up (or at least their contents.

Also now i get a bunch of warnings when running btrbk run or my script at @cron.daily.