File zfs-import-scan.patch of Package zfs

--- etc/systemd/system/zfs-import-scan.service.in       2019-06-13 02:09:52.000000000 +0200
+++ etc/systemd/system/zfs-import-scan.service  2019-08-21 15:42:08.768659109 +0200
@@ -11,7 +11,7 @@
 [Service]
 Type=oneshot
 RemainAfterExit=yes
-ExecStart=@sbindir@/zpool import -aN -o cachefile=none
+ExecStart=@sbindir@/zpool import -f -aN -o cachefile=none

 [Install]
 WantedBy=zfs-import.target