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).

diff --git a/rules/99-systemd.rules.in b/rules/99-systemd.rules.in
index 021359a84726347539aab59b0be8af1d952d239f..04a59c4604233486a7727ed7794ce39983e850d4 100644 (file)
--- a/rules/99-systemd.rules.in
+++ b/rules/99-systemd.rules.in
@@ -22,6 +22,9 @@ SUBSYSTEM=="block", KERNEL!="ram*", ENV{DM_UUID}=="CRYPT-*", ENV{ID_PART_TABLE_T
 SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", KERNEL=="md*", TEST!="md/array_state", ENV{SYSTEMD_READY}="0"
 SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", KERNEL=="md*", ATTR{md/array_state}=="|clear|inactive", ENV{SYSTEMD_READY}="0"
 
 SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", KERNEL=="md*", TEST!="md/array_state", ENV{SYSTEMD_READY}="0"
 SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", KERNEL=="md*", ATTR{md/array_state}=="|clear|inactive", ENV{SYSTEMD_READY}="0"
 

+# Ignore loop devices that don't have any file attached
+SUBSYSTEM=="block", KERNEL=="loop[0-9]*", TEST!="loop/backing_file", ENV{SYSTEMD_READY}="0"
+

 # Ignore nbd devices in the "add" event, with "change" the nbd is ready
 ACTION=="add", SUBSYSTEM=="block", KERNEL=="nbd*", ENV{SYSTEMD_READY}="0"
 
 # Ignore nbd devices in the "add" event, with "change" the nbd is ready
 ACTION=="add", SUBSYSTEM=="block", KERNEL=="nbd*", ENV{SYSTEMD_READY}="0"