qemu-iotests: Test qemu-img rebase
PATCH 1/1 qemu-iotests: Test qemu-img rebase
Signed-off-by Kevin Wolf <[email protected]>
--- 024 | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 024.out | 81 +++++++++++++++++++++++++++++++++++++++++++++++++ group | 1 + 3 files changed, 186 insertions(+), 0 deletions(-) create mode 100755 024 create mode 100644 024.out
024 new file +104 -0
@@ -0,0 +1,104 @@ +#!/bin/sh +# +# Rebasing COW images +# +# Copyright (C) 2009 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 [email protected] + +seq=`basename $0` +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img + rm -f $TEST_DIR/t.$IMGFMT.base_old + rm -f $TEST_DIR/t.$IMGFMT.base_new +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter +. ./common.pattern + +# Currently only qcow2 supports rebasing +_supported_fmt qcow2 +_supported_os Linux + +CLUSTER_SIZE=65536 + +# Cluster allocations to be tested: +# +# Backing (old) 11 -- 11 -- 11 -- 11 -- +# Backing (new) 22 22 -- -- 22 22 -- -- +# COW image 33 33 33 33 -- -- -- -- + +echo "Creating backing file" +echo + +_make_test_img 1G +io_pattern writev $((-2 * CLUSTER_SIZE)) $CLUSTER_SIZE $((2 * CLUSTER_SIZE)) 4 0x11 +mv $TEST_IMG $TEST_IMG.base_old + +echo "Creating new backing file" +echo + +_make_test_img 1G +io_pattern writev $((-4 * CLUSTER_SIZE)) $((2 * CLUSTER_SIZE)) $((4 * CLUSTER_SIZE)) 2 0x22 +mv $TEST_IMG $TEST_IMG.base_new + +echo "Creating COW image" +echo + +_make_test_img -b $TEST_IMG.base_old 1G +io_pattern writev 0 $((4 * CLUSTER_SIZE)) 0 1 0x33 + +echo "Read before the rebase to make sure everything is set up correctly" +echo +io_pattern readv $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 +io_pattern readv $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 +io_pattern readv $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 +io_pattern readv $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 +io_pattern readv $((4 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 +io_pattern readv $((5 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 +io_pattern readv $((6 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 +io_pattern readv $((7 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 + +echo +echo Rebase and test again +echo +$QEMU_IMG rebase -b $TEST_IMG.base_new $TEST_IMG +io_pattern readv $((0 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 +io_pattern readv $((1 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 +io_pattern readv $((2 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 +io_pattern readv $((3 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x33 +io_pattern readv $((4 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 +io_pattern readv $((5 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 +io_pattern readv $((6 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x11 +io_pattern readv $((7 * CLUSTER_SIZE)) $CLUSTER_SIZE 0 1 0x00 + + +# success, all done +echo "*** done" +rm -f $seq.full +status=0
024.out new file +81 -0
81 lines not on this page · raw message
group +1 -0
@@ -30,3 +30,4 @@ 021 io auto 022 rw snapshot auto 023 rw auto +024 rw backing auto
Signature · 1 line
1.6.2.5
Looks good, thanks!