Prevent manually transferring a read‑write snapshot

diff --git a/client/snbk/TheBigThing.cc b/client/snbk/TheBigThing.cc
index 8ab6a2d51865e6c6547a1cdb45072d8140d0a9cf..9a7b8e4640282dc507749a8b3ecddc6864e16af9 100644 (file)
--- a/client/snbk/TheBigThing.cc
+++ b/client/snbk/TheBigThing.cc
@@ -250,6 +250,8 @@ namespace snapper
 
        if (source_state == SourceState::MISSING)
            SN_THROW(Exception(_("Snapshot not on source.")));
+       else if (source_state == SourceState::READ_WRITE)
+           SN_THROW(Exception(_("Cannot transfer a read-write snapshot.")));
 
        if (target_state != TargetState::MISSING)
            SN_THROW(Exception(_("Snapshot already on target.")));