From 9c702318593518e8686cc2145b2b3c4f187a2371 Mon Sep 17 00:00:00 2001
From: teesid <teesid@instasim.com>
Date: Fri, 29 Jun 2018 09:36:10 +0700
Subject: [PATCH] btrbk: allow backup of subvolume (subvolid != 5) mounted at
 "/"

It works with the configuration snippet below if subvolid != 5:

```
volume /
  subvolume  .
    snapshot_name  root
```
---
 btrbk | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/btrbk b/btrbk
index f4a76c1..b2a0ac1 100755
--- a/btrbk
+++ b/btrbk
@@ -5303,8 +5303,11 @@ MAIN:
         WARN "Skipping subvolume \"$svol->{PRINT}\": $abrt";
         next;
       }
-      if($svol->{node}{uuid} && _is_child_of($sroot->{node}, $svol->{node}{uuid})) {
-        DEBUG "Found \"$svol->{PRINT}\" (id=$svol->{node}{id}) in btrfs subtree of: $sroot->{PRINT}";
+      if($svol->{node}{uuid} &&
+          (_is_child_of($sroot->{node}, $svol->{node}{uuid}) ||
+           ($svol->{node}{uuid} eq $sroot->{node}{uuid})))
+      {
+        DEBUG "Found \"$svol->{PRINT}\" (id=$svol->{node}{id}) in btrfs tree of: $sroot->{PRINT}";
       } else {
         ABORTED($svol, "Not a child subvolume of: $sroot->{PRINT}");
         WARN "Skipping subvolume \"$svol->{PRINT}\": $abrt";