From 647e0e2ae8f978d6f7a90ff572a914bca7b74dfc Mon Sep 17 00:00:00 2001
From: timeshifter <timeshifter@sumatrae>
Date: Thu, 25 Nov 2021 19:52:59 +0100
Subject: [PATCH] better output for existing mapper

---
 zfs-backup.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/zfs-backup.py b/zfs-backup.py
index 476090e..ee2d4b3 100755
--- a/zfs-backup.py
+++ b/zfs-backup.py
@@ -133,7 +133,8 @@ class Disk:
     def _verify_mapper_entry_not_in_use(self):
         for item in MAPPER_PATH.iterdir():
             if self._mapper_entry == item.name:
-                raise IOError(f"mapper entry {self._mapper_entry} already exists")
+                print(f"mapper entry {self._mapper_entry} already exists")
+                exit(1)
 
     @property
     def _path(self) -> Path: