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test_description="test prezeroed storage metadata allocation"
FILE_SIZE=16M
LOG=$test_name.log
OUT=$test_name.out
EXP=$test_dir/expect
if test "$(id -u)" -ne 0 ; then
echo "$test_name: $test_description: skipped (not root)"
elif ! command -v losetup >/dev/null ; then
echo "$test_name: $test_description: skipped (no losetup)"
else
dd if=/dev/zero of=$TMPFILE.1 bs=1 count=0 seek=$FILE_SIZE >> $LOG 2>&1
dd if=/dev/zero of=$TMPFILE.2 bs=1 count=0 seek=$FILE_SIZE >> $LOG 2>&1
LOOP1=$(losetup --show --sector-size 4096 -f $TMPFILE.1)
if [ ! -b "$LOOP1" ]; then
echo "$test_name: $DESCRIPTION: skipped (no loop devices)"
rm -f $TMPFILE.1 $TMPFILE.2
exit 0
fi
LOOP2=$(losetup --show --sector-size 4096 -f $TMPFILE.2)
if [ ! -b "$LOOP2" ]; then
echo "$test_name: $DESCRIPTION: skipped (no loop devices)"
rm -f $TMPFILE.1 $TMPFILE.2
losetup -d $LOOP1
exit 0
fi
echo $MKE2FS -o Linux -t ext4 $LOOP1 >> $LOG 2>&1
$MKE2FS -o Linux -t ext4 $LOOP1 >> $LOG 2>&1
sync
stat $TMPFILE.1 >> $LOG 2>&1
SZ=$(stat -c "%b" $TMPFILE.1)
if test $SZ -gt 10000 ; then
echo "> 10000" > $OUT
else
echo "$SZ" > $OUT
fi
echo $MKE2FS -o Linux -t ext4 -E assume_storage_prezeroed=1 $LOOP2 >> $LOG 2>&1
$MKE2FS -o Linux -t ext4 -E assume_storage_prezeroed=1 $LOOP2 >> $LOG 2>&1
sync
stat $TMPFILE.2 >> $LOG 2>&1
stat -c "%b" $TMPFILE.2 >> $OUT
losetup -d $LOOP1
losetup -d $LOOP2
rm -f $TMPFILE.1 $TMPFILE.2
cmp -s $OUT $EXP
status=$?
if [ "$status" = 0 ] ; then
echo "$test_name: $test_description: ok"
touch $test_name.ok
else
echo "$test_name: $test_description: failed"
cat $LOG > $test_name.failed
diff $EXP $OUT >> $test_name.failed
fi
fi
unset LOG OUT EXP FILE_SIZE LOOP1 LOOP2
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