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image_builder: add argument for set FREE SPACE

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This commit is contained in:
Artem Smirnov
2018-06-05 18:55:20 +03:00
parent 0d0c8e54f4
commit 76e887407a
1 changed files with 12 additions and 7 deletions
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19
image_builder/autosizer.sh
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@@ -14,10 +14,11 @@ fi
if [[ -z $1 ]]; then
echo "================================================================================"
echo -e "\033[0;31m\033[1mAutomatic Image file resizer\033[0m\033[0m"
echo -e "\033[0;31m\033[1mDescription:\033[0m\033[0m This script shrink your image to 100MB free space"
echo -e "\033[0;31m\033[1mDescription:\033[0m\033[0m This script shrink your image to 10MiB free space"
echo -e "if you didn't set FREE_SPACE in MiB (see usage below)."
echo -e "\033[0;31m\033[1mAuthors:\033[0m\033[0m Artem Smirnov @urpylka, SirLagz"
echo
echo -e "\033[0;31m\033[1mUsage:\033[0m\033[0m ./autosizer.sh PATH_TO_IMAGE"
echo -e "\033[0;31m\033[1mUsage:\033[0m\033[0m ./autosizer.sh PATH_TO_IMAGE FREE_SPACE"
echo
echo -e "\033[0;31m\033[1mRequirements:\033[0m\033[0m parted, losetup, e2fsck, resize2fs, bc, truncate"
echo "================================================================================"
@@ -59,12 +60,16 @@ set -e
echo "================================================================================"
minsize=`resize2fs -P $loopback | awk -F': ' '{ print $2 }'`
#minsize=`resize2fs -P $loopback 2> /dev/null | awk -F': ' '{ print $2 }'`
echo -e "\033[0;31m\033[1mMinsize: $minsize (4k)\033[0m\033[0m"
echo -e "\033[0;31m\033[1mMinsize: $minsize (4KiB)\033[0m\033[0m"
echo "================================================================================"
# Add 100MB free space to image 4096 (bytes) * 25000 = 102,400,000
minsize=`echo "$minsize+25000" | bc`
echo -e "\033[0;31m\033[1mMinsize + 25000 (4k): $minsize (4k)\033[0m\033[0m"
# Default add 10MiB free space to image, if $2 doesn't set
FREE_SPACE=${2:-10}
FREE_SPACE=$(($FREE_SPACE*1024*1024/4096))
minsize=`echo "$minsize+$FREE_SPACE" | bc`
echo -e "\033[0;31m\033[1mMinsize + $FREE_SPACE (4KiB): $minsize (4KiB)\033[0m\033[0m"
echo "================================================================================"
resize2fs -p $loopback $minsize
@@ -73,7 +78,7 @@ losetup -d $loopback
echo "================================================================================"
partnewsize=`echo "$minsize * 4096" | bc`
echo -e "\033[0;31m\033[1mNew size of part: $minsize (4k) = $partnewsize (bytes)\033[0m\033[0m"
echo -e "\033[0;31m\033[1mNew size of part: $minsize (4KiB) = $partnewsize (bytes)\033[0m\033[0m"
echo "================================================================================"
newpartend=`echo "$partstart + $partnewsize" | bc`