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|
#!/usr/bin/env bash
# group: rw quick
#
# Test preallocated resize of raw images
#
# Copyright (C) 2017 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# creator
owner=hreitz@redhat.com
seq=$(basename $0)
echo "QA output created by $seq"
status=1 # failure is the default!
_cleanup()
{
_cleanup_test_img
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment and filters
. ./common.rc
. ./common.filter
_supported_fmt raw
_supported_proto file fuse
_supported_os Linux
# in kB
CREATION_SIZE=128
GROWTH_SIZE=256
echo '=== Testing image growth ==='
for create_mode in off falloc full; do
for growth_mode in off falloc full; do
echo
echo "--- create_mode=$create_mode growth_mode=$growth_mode ---"
# Our calculation below assumes kilobytes as unit for the actual size.
# Disable the extent size hint because it would give us a result in
# megabytes.
_make_test_img -o "preallocation=$create_mode,extent_size_hint=0" ${CREATION_SIZE}K
$QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K
expected_size=0
if [ $create_mode != off ]; then
expected_size=$CREATION_SIZE
fi
if [ $growth_mode != off ]; then
expected_size=$((expected_size + $GROWTH_SIZE))
fi
actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size' | head -n 1)
actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/')
# The actual size may exceed the expected size, depending on the file
# system. Therefore we just test that the actual size is at least what
# we expect.
if [ $actual_size -lt $expected_size ]; then
echo "ERROR: Image should have at least ${expected_size}K, but has ${actual_size}K"
fi
done
done
echo
echo '=== Testing image shrinking ==='
# None of this should work except for "off", because other modes cannot be used
# for shrinking
for growth_mode in falloc full off; do
echo
echo "--- growth_mode=$growth_mode ---"
$QEMU_IMG resize -f "$IMGFMT" --shrink --preallocation=$growth_mode "$TEST_IMG" -${GROWTH_SIZE}K
done
echo
echo '=== Testing image growth on 2G empty image ==='
for growth_mode in falloc full; do
echo
echo "--- growth_mode=$growth_mode ---"
# Maybe we want to do an lseek() to the end of the file before the
# preallocation; if the file has a length of 2 GB, that would
# return an integer that overflows to negative when put into a
# plain int. We should use the correct type for the result, and
# this tests we do.
_make_test_img -o "extent_size_hint=0" 2G
$QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K
actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size' | head -n 1)
actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/')
if [ $actual_size -lt $GROWTH_SIZE ]; then
echo "ERROR: Image should have at least ${GROWTH_SIZE}K, but has ${actual_size}K"
fi
done
# success, all done
echo '*** done'
rm -f $seq.full
status=0
|
