-ACTION=="add", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{ID_VENDOR}=="QEMU", ENV{ID_MODEL}=="QEMU_HARDDISK", ATTR{queue/read_ahead_kb}="4096"
-# Note QEMU sets scheduler to none automatically
+ACTION=="add", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{ID_MODEL}=="QEMU_HARDDISK", ATTR{queue/read_ahead_kb}="4096"
+ACTION=="add", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{ID_MODEL}=="QEMU_HARDDISK", ATTR{queue/scheduler}="noop"
+# Vendor is sometimes missing