[PATCH] Make overlay space requirements clearer

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[PATCH] Make overlay space requirements clearer

Jason Farrell-2
My biggest annoyance with the livecd-iso-to-disk script has simply
been having to do a little math in my head when trying to fit the
largest possible overlay combo onto my liveusb. The script should be
doing this work - it should tell you by how much you're over so you
can free it and/or quickly adjust your sizes.

BEFORE:

[root@nano livecd-foo]# livecd-iso-to-disk --noverify
--overlay-size-mb 12000 --home-size-mb 8000 --swap-size-mb 1024
--delete-home Fedora-11-i686-Live.iso /dev/loop0
Unable to fit live image + overlay on available space on USB stick
Size of live image: 679
Overlay size: 12000
Home overlay size: 8000
Home overlay size: 1024
Available space: 15947
Cleaning up to exit...

AFTER:

[root@nano livecd-foo]# ./livecd-iso-to-disk.sh --noverify
--overlay-size-mb 12000 --home-size-mb 8000 --swap-size-mb 1024
--delete-home Fedora-11-i686-Live.iso /dev/loop0
Unable to fit live image + overlay on available space on USB stick
+ Size of live image:  679
+ Overlay size:  12000
+ Home overlay size:  8000
+ Swap overlay size:  1024
---------------------------
= Requested:  21703
- Available:  15947
---------------------------
= To fit, free or decrease requested size total by:  9296
Cleaning up to exit...





diff -Naur livecd-iso-to-disk.sh.orig livecd-iso-to-disk.sh
--- livecd-iso-to-disk.sh.orig  2009-06-17 17:57:21.000000000 -0400
+++ livecd-iso-to-disk.sh       2009-06-17 19:12:33.897509289 -0400
@@ -476,13 +476,18 @@
 fi
 free=$(df  -B1M $USBDEV  |tail -n 1 |awk {'print $4;'})

-if [ $(($overlaysizemb + $homesizemb + $livesize + $swapsizemb)) -gt
$(($free + $tbd)) ]; then
+tba=$(($overlaysizemb + $homesizemb + $livesize + $swapsizemb))
+if [ $tba -gt $(($free + $tbd)) ]; then
   echo "Unable to fit live image + overlay on available space on USB stick"
-  echo "Size of live image: $livesize"
-  [ "$overlaysizemb" -gt 0 ] && echo "Overlay size: $overlaysizemb"
-  [ "$homesizemb" -gt 0 ] && echo "Home overlay size: $homesizemb"
-  [ "$swapsizemb" -gt 0 ] && echo "Home overlay size: $swapsizemb"
-  echo "Available space: $(($free + $tbd))"
+  echo "+ Size of live image:  $livesize"
+  [ "$overlaysizemb" -gt 0 ] && echo "+ Overlay size:  $overlaysizemb"
+  [ "$homesizemb" -gt 0 ] && echo "+ Home overlay size:  $homesizemb"
+  [ "$swapsizemb" -gt 0 ] && echo "+ Swap overlay size:  $swapsizemb"
+  echo "---------------------------"
+  echo "= Requested:  $tba"
+  echo "- Available:  $(($free + $tbd))"
+  echo "---------------------------"
+  echo "= To fit, free or decrease requested size total by:  $(($tba
- $free + $tbd))"
   exitclean
 fi



--
Jason "zcat" Farrell

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