From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46234) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fV5iU-00026l-Ay for qemu-devel@nongnu.org; Mon, 18 Jun 2018 21:45:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fV5iT-0000AH-Br for qemu-devel@nongnu.org; Mon, 18 Jun 2018 21:45:54 -0400 Sender: fluxion From: Michael Roth Date: Mon, 18 Jun 2018 20:42:15 -0500 Message-Id: <20180619014319.28272-50-mdroth@linux.vnet.ibm.com> In-Reply-To: <20180619014319.28272-1-mdroth@linux.vnet.ibm.com> References: <20180619014319.28272-1-mdroth@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH 049/113] iotests: Test preallocated truncate of 2G image List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Max Reitz From: Max Reitz Signed-off-by: Max Reitz Message-id: 20180228131315.30194-3-mreitz@redhat.com Reviewed-by: Daniel P. Berrangé Reviewed-by: Eric Blake Signed-off-by: Max Reitz (cherry picked from commit 733d1dce0f3c8ab7b79a173f6482781d3718f844) Signed-off-by: Michael Roth --- tests/qemu-iotests/106 | 24 ++++++++++++++++++++++++ tests/qemu-iotests/106.out | 10 ++++++++++ 2 files changed, 34 insertions(+) diff --git a/tests/qemu-iotests/106 b/tests/qemu-iotests/106 index bfe71f4e60..5e51f88a78 100755 --- a/tests/qemu-iotests/106 +++ b/tests/qemu-iotests/106 @@ -86,6 +86,30 @@ for growth_mode in falloc full off; do $QEMU_IMG resize -f "$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 2G + $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K + + actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size') + actual_size=$(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 diff --git a/tests/qemu-iotests/106.out b/tests/qemu-iotests/106.out index 0a42312301..c459957660 100644 --- a/tests/qemu-iotests/106.out +++ b/tests/qemu-iotests/106.out @@ -47,4 +47,14 @@ qemu-img: Preallocation can only be used for growing images --- growth_mode=off --- Image resized. + +=== Testing image growth on 2G empty image === + +--- growth_mode=falloc --- +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2147483648 +Image resized. + +--- growth_mode=full --- +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2147483648 +Image resized. *** done -- 2.11.0