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From 4c3ce66158917f3fff65e25b5dde622bff3ec6f8 Mon Sep 17 00:00:00 2001
From: Peter Rajnoha <prajnoha@redhat.com>
Date: Thu, 6 Mar 2014 15:49:55 +0100
Subject: [PATCH] rules: mark loop device as SYSTEMD_READY=0 if no file is
 attached

Check existence of loop/backing_file in sysfs and mark loop
devices with SYSTEMD_READY if missing. Such loop files is
uninitialized and it's not ready for use yet (there's no file
attached).
---
 rules/99-systemd.rules.in | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rules/99-systemd.rules.in b/rules/99-systemd.rules.in
index 0e0a567..0471719 100644
--- a/rules/99-systemd.rules.in
+++ b/rules/99-systemd.rules.in
@@ -25,6 +25,9 @@ SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", KERNEL=="md*", ATTR{md/array_state}=="
 # Ignore nbd devices in the "add" event, with "change" the nbd is ready
 ACTION=="add", SUBSYSTEM=="block", KERNEL=="nbd*", ENV{SYSTEMD_READY}="0"
 
+# Ignore loop devices that don't have any file attached
+ACTION=="add|change", KERNEL=="loop[0-9]*", TEST!="loop/backing_file", ENV{SYSTEMD_READY}="0"
+
 # We need a hardware independent way to identify network devices. We
 # use the /sys/subsystem path for this. Current vanilla kernels don't
 # actually support that hierarchy right now, however upcoming kernels