From c2657570456d6c8db4830cc3c7a5e4888942d691 Mon Sep 17 00:00:00 2001
From: Simo Leone <simo@archlinux.org>
Date: Sun, 30 Mar 2008 03:31:46 -0500
Subject: Changed mkusbimg size to 25% over rootsize

This is plenty to compensate for filesystem
overhead. Cutting the size too close to
the minimum makes the image unbootable.
No idea why.

Signed-off-by: Simo Leone <simo@archlinux.org>
---
 mkusbimg | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/mkusbimg b/mkusbimg
index 6a41f4c..5e655b2 100755
--- a/mkusbimg
+++ b/mkusbimg
@@ -56,13 +56,16 @@ LOOPDEV=$(next_avail_loop)
 TMPDIR=$(mktemp -d)
 
 # TODO: there are better ways to do this
-#       than adding 5MB to the rootsize
+#       than adding 25% to the rootsize
+#  XXX: doesn't seem to boot if we cut it too
+#       close. even if everything fits...
 # IMGSZ >= filesystem overhead + rootsize + 512bytes
 # must hold or there will be insufficient space
-IMGSZ=$(( $(du -ms ${IMGROOT}|cut -f1) + 5 ))
+rootsize=$(du -bs ${IMGROOT}|cut -f1)
+IMGSZ=$(( (${rootsize}*5)/4 + 512 ))
 
 # create the image file
-dd if=/dev/zero of="$IMG" bs=1M count="$IMGSZ"
+dd if=/dev/zero of="$IMG" bs="$IMGSZ" count=1
 
 # loop mount the disk image
 losetup "$LOOPDEV" "$IMG"
-- 
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