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Add -o option in CreatePersistentImg.sh (#903)

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longpanda 2021-05-14 12:12:07 +08:00
parent 93996cf7e2
commit d07aa6ce07
1 changed files with 11 additions and 2 deletions
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13
INSTALL/CreatePersistentImg.sh
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@ -4,6 +4,7 @@ size=1024
fstype=ext4 fstype=ext4
label=casper-rw label=casper-rw
config='' config=''
outputfile=persistence.dat
print_usage() { print_usage() {
echo 'Usage: CreatePersistentImg.sh [ -s size ] [ -t fstype ] [ -l LABEL ] [ -c CFG ]' echo 'Usage: CreatePersistentImg.sh [ -s size ] [ -t fstype ] [ -l LABEL ] [ -c CFG ]'
@ -12,6 +13,7 @@ print_usage() {
echo ' -t filesystem type, default is ext4 ext2/ext3/ext4/xfs are supported now' echo ' -t filesystem type, default is ext4 ext2/ext3/ext4/xfs are supported now'
echo ' -l label, default is casper-rw' echo ' -l label, default is casper-rw'
echo ' -c configfile name inside the persistence file. File content is "/ union"' echo ' -c configfile name inside the persistence file. File content is "/ union"'
echo ' -o outputfile name, default is persistence.dat'
echo '' echo ''
} }
@ -28,6 +30,9 @@ while [ -n "$1" ]; do
elif [ "$1" = "-c" ]; then elif [ "$1" = "-c" ]; then
shift shift
config=$1 config=$1
elif [ "$1" = "-o" ]; then
shift
outputfile=$1
elif [ "$1" = "-h" ] || [ "$1" = "--help" ]; then elif [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
print_usage print_usage
exit 0 exit 0
@ -69,13 +74,17 @@ else
exit 1 exit 1
fi fi
if [ "$outputdir" != "persistence.dat" ]; then
mkdir -p "$(dirname "$outputfile")"
fi
# 00->ff avoid sparse file # 00->ff avoid sparse file
dd if=/dev/zero bs=1M count=$size | tr '\000' '\377' > persistence.dat dd if=/dev/zero bs=1M count=$size | tr '\000' '\377' > "$outputfile"
sync sync
freeloop=$(losetup -f) freeloop=$(losetup -f)
losetup $freeloop persistence.dat losetup $freeloop "$outputfile"
mkfs -t $fstype $fsopt -L $label $freeloop mkfs -t $fstype $fsopt -L $label $freeloop