core-image-minimal: Add 4M extra space when using systemd

qemu images fail to rebuild the hwdb due to no space letf on device

 systemd-hwdb-update.service - Rebuild Hardware Database
   Loaded: loaded (/lib/systemd/system/systemd-hwdb-update.service;
   static; vendor preset: enabled)
      Active: failed (Result: exit-code) since Sat 2015-08-15 21:39:28
      UTC; 28s ago
      Docs: man:hwdb(7)
            man:systemd-hwdb(8)
	        Process: 92 ExecStart=/bin/systemd-hwdb update
		(code=exited, status=1/FAILURE)
		 Main PID: 92 (code=exited, status=1/FAILURE)

	 Aug 15 21:39:28 qemux86 systemd-hwdb[92]:
		 Failure writing database //etc/udev/hwdb.bin:
		 No space left on device
		 Aug 15 21:39:28 qemux86 systemd[1]:
		 systemd-hwdb-update.service: Main process
		 exited, code=exited, status=1/FAILURE
		 Aug 15 21:39:28 qemux86 systemd[1]: Failed to
		 start Rebuild Hardware Database.

(From OE-Core rev: 4086c539d47bc837e775972016e1844a3676c8e7)

(From OE-Core rev: 3acec386b94a040cbda615c8819d2552dd0878a6)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/recipes-core/images/core-image-minimal.bb b/meta/recipes-core/images/core-image-minimal.bb
index 9716274c34..8dd77b3472 100644
--- a/meta/recipes-core/images/core-image-minimal.bb
+++ b/meta/recipes-core/images/core-image-minimal.bb
@@ -9,4 +9,4 @@ LICENSE = "MIT"
 inherit core-image
 
 IMAGE_ROOTFS_SIZE ?= "8192"
-
+IMAGE_ROOTFS_EXTRA_SPACE_append = "${@bb.utils.contains("DISTRO_FEATURES", "systemd", " + 4096", "" ,d)}"