Only keep one snapshot if .btrfish-keepone exists in the root of the subvolume

backup.fish

@@ -51,11 +51,17 @@ end
 echo "Renaming subvolumes on target..."
 for pair in $pairs
 	set subvol (clean-name (get-subvol $pair))
+	set mount (get-mount $pair)
+
+	if not test -f $mount/.btrfish-keepone
+		rename-target-subvolume $subvol $subvol.(date +%Y-%m-%d)
+	else
+		delete-target-subvolume $subvol
+	end
 
-	rename-target-subvolume $subvol $subvol.(date +%Y-%m-%d)
 	rename-target-subvolume $subvol-new $subvol
 
-	sudo rm (get-mount $pair)/.btrfish-lock
+	sudo rm $mount/.btrfish-lock
 end
 
 echo "Done!"

utils.fish

@@ -12,6 +12,10 @@ function rename-target-subvolume
 	ssh -i $sshkey $targetuser@$targethost mv -v $targetpath/$argv[1] $targetpath/$argv[2]
 end
 
+function delete-target-subvolume
+	ssh -i $sshkey $targetuser@$targethost sudo btrfs subvolume delete $targetpath/$argv[1]
+end
+
 function get-subvol
 	echo $argv | cut -d' ' -f1
 end