From nobody Thu Nov 14 07:10:03 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1705564624896585.1462542268818; Wed, 17 Jan 2024 23:57:04 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rQNE8-0000Ng-LU; Thu, 18 Jan 2024 02:54:16 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rQNE7-0000Mt-0H; Thu, 18 Jan 2024 02:54:15 -0500 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rQNE4-0007Jk-Fz; Thu, 18 Jan 2024 02:54:14 -0500 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id F14724502D; Thu, 18 Jan 2024 10:54:34 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id 278EF66196; Thu, 18 Jan 2024 10:54:05 +0300 (MSK) Received: (nullmailer pid 2381637 invoked by uid 1000); Thu, 18 Jan 2024 07:54:04 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Kevin Wolf , Michael Tokarev Subject: [Stable-8.2.1 03/38] iotests: Basic tests for internal snapshots Date: Thu, 18 Jan 2024 10:52:30 +0300 Message-Id: <20240118075404.2381519-3-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1705564626672100003 Content-Type: text/plain; charset="utf-8" From: Kevin Wolf We have a few test cases that include tests for corner case aspects of internal snapshots, but nothing that tests that they actually function as snapshots or that involves deleting a snapshot. Add a test for this kind of basic internal snapshot functionality. The error cases include a regression test for the crash we just fixed with snapshot operations on inactive images. Signed-off-by: Kevin Wolf Message-ID: <20231201142520.32255-4-kwolf@redhat.com> Signed-off-by: Kevin Wolf (cherry picked from commit bb6e2511eb48539b7dcbcb5f47772e156b9c45d1) Signed-off-by: Michael Tokarev diff --git a/tests/qemu-iotests/tests/qcow2-internal-snapshots b/tests/qemu= -iotests/tests/qcow2-internal-snapshots new file mode 100755 index 0000000000..36523aba06 --- /dev/null +++ b/tests/qemu-iotests/tests/qcow2-internal-snapshots @@ -0,0 +1,170 @@ +#!/usr/bin/env bash +# group: rw quick +# +# Test case for internal snapshots in qcow2 +# +# Copyright (C) 2023 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 . +# + +# creator +owner=3Dkwolf@redhat.com + +seq=3D"$(basename $0)" +echo "QA output created by $seq" + +status=3D1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ../common.rc +. ../common.filter + +# This tests qcow2-specific low-level functionality +_supported_fmt qcow2 +_supported_proto generic +# Internal snapshots are (currently) impossible with refcount_bits=3D1, +# and generally impossible with external data files +_unsupported_imgopts 'compat=3D0.10' 'refcount_bits=3D1[^0-9]' data_file + +IMG_SIZE=3D64M + +_qemu() +{ + $QEMU -no-shutdown -nographic -monitor stdio -serial none \ + -blockdev file,filename=3D"$TEST_IMG",node-name=3Ddisk0-file \ + -blockdev "$IMGFMT",file=3Ddisk0-file,node-name=3Ddisk0 \ + -object iothread,id=3Diothread0 \ + -device virtio-scsi,iothread=3Diothread0 \ + -device scsi-hd,drive=3Ddisk0,share-rw=3Don \ + "$@" 2>&1 |\ + _filter_qemu | _filter_hmp | _filter_qemu_io +} + +_make_test_img $IMG_SIZE + +echo +echo "=3D=3D=3D Write some data, take a snapshot and overwrite part of it = =3D=3D=3D" +echo + +{ + echo 'qemu-io disk0 "write -P0x11 0 1M"' + # Give qemu some time to boot before saving the VM state + sleep 0.5 + echo "savevm snap0" + echo 'qemu-io disk0 "write -P0x22 0 512k"' + echo "quit" +} | _qemu + +echo +$QEMU_IMG snapshot -l "$TEST_IMG" | _filter_date | _filter_vmstate_size +_check_test_img + +echo +echo "=3D=3D=3D Verify that loading the snapshot reverts to the old conten= t =3D=3D=3D" +echo + +{ + # -loadvm reverted the write from the previous QEMU instance + echo 'qemu-io disk0 "read -P0x11 0 1M"' + + # Verify that it works without restarting QEMU, too + echo 'qemu-io disk0 "write -P0x33 512k 512k"' + echo "loadvm snap0" + echo 'qemu-io disk0 "read -P0x11 0 1M"' + + # Verify COW by writing a partial cluster + echo 'qemu-io disk0 "write -P0x33 63k 2k"' + echo 'qemu-io disk0 "read -P0x11 0 63k"' + echo 'qemu-io disk0 "read -P0x33 63k 2k"' + echo 'qemu-io disk0 "read -P0x11 65k 63k"' + + # Take a second snapshot + echo "savevm snap1" + + echo "quit" +} | _qemu -loadvm snap0 + +echo +$QEMU_IMG snapshot -l "$TEST_IMG" | _filter_date | _filter_vmstate_size +_check_test_img + +echo +echo "=3D=3D=3D qemu-img snapshot can revert to snapshots =3D=3D=3D" +echo + +$QEMU_IMG snapshot -a snap0 "$TEST_IMG" +$QEMU_IO -c "read -P0x11 0 1M" "$TEST_IMG" | _filter_qemu_io +$QEMU_IMG snapshot -a snap1 "$TEST_IMG" +$QEMU_IO \ + -c "read -P0x11 0 63k" \ + -c "read -P0x33 63k 2k" \ + -c "read -P0x11 65k 63k" \ + "$TEST_IMG" | _filter_qemu_io + +echo +echo "=3D=3D=3D Deleting snapshots =3D=3D=3D" +echo +{ + # The active layer stays unaffected by deleting the snapshot + echo "delvm snap1" + echo 'qemu-io disk0 "read -P0x11 0 63k"' + echo 'qemu-io disk0 "read -P0x33 63k 2k"' + echo 'qemu-io disk0 "read -P0x11 65k 63k"' + + echo "quit" +} | _qemu + + +echo +$QEMU_IMG snapshot -l "$TEST_IMG" | _filter_date | _filter_vmstate_size +_check_test_img + +echo +echo "=3D=3D=3D Error cases =3D=3D=3D" +echo + +# snap1 should not exist any more +_qemu -loadvm snap1 + +echo +{ + echo "loadvm snap1" + echo "quit" +} | _qemu + +# Snapshot operations and inactive images are incompatible +echo +_qemu -loadvm snap0 -incoming defer +{ + echo "loadvm snap0" + echo "delvm snap0" + echo "savevm snap1" + echo "quit" +} | _qemu -incoming defer + +# -loadvm and -preconfig are incompatible +echo +_qemu -loadvm snap0 -preconfig + +# success, all done +echo "*** done" +rm -f $seq.full +status=3D0 diff --git a/tests/qemu-iotests/tests/qcow2-internal-snapshots.out b/tests/= qemu-iotests/tests/qcow2-internal-snapshots.out new file mode 100644 index 0000000000..438f535e6a --- /dev/null +++ b/tests/qemu-iotests/tests/qcow2-internal-snapshots.out @@ -0,0 +1,107 @@ +QA output created by qcow2-internal-snapshots +Formatting 'TEST_DIR/t.IMGFMT', fmt=3DIMGFMT size=3D67108864 + +=3D=3D=3D Write some data, take a snapshot and overwrite part of it =3D=3D= =3D + +QEMU X.Y.Z monitor - type 'help' for more information +(qemu) qemu-io disk0 "write -P0x11 0 1M" +wrote 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) savevm snap0 +(qemu) qemu-io disk0 "write -P0x22 0 512k" +wrote 524288/524288 bytes at offset 0 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) quit + +Snapshot list: +ID TAG VM SIZE DATE VM CLOCK I= COUNT +1 snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000 +No errors were found on the image. + +=3D=3D=3D Verify that loading the snapshot reverts to the old content =3D= =3D=3D + +QEMU X.Y.Z monitor - type 'help' for more information +(qemu) qemu-io disk0 "read -P0x11 0 1M" +read 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) qemu-io disk0 "write -P0x33 512k 512k" +wrote 524288/524288 bytes at offset 524288 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) loadvm snap0 +(qemu) qemu-io disk0 "read -P0x11 0 1M" +read 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) qemu-io disk0 "write -P0x33 63k 2k" +wrote 2048/2048 bytes at offset 64512 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) qemu-io disk0 "read -P0x11 0 63k" +read 64512/64512 bytes at offset 0 +63 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) qemu-io disk0 "read -P0x33 63k 2k" +read 2048/2048 bytes at offset 64512 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) qemu-io disk0 "read -P0x11 65k 63k" +read 64512/64512 bytes at offset 66560 +63 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) savevm snap1 +(qemu) quit + +Snapshot list: +ID TAG VM SIZE DATE VM CLOCK I= COUNT +1 snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000 +2 snap1 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000 +No errors were found on the image. + +=3D=3D=3D qemu-img snapshot can revert to snapshots =3D=3D=3D + +read 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 64512/64512 bytes at offset 0 +63 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 2048/2048 bytes at offset 64512 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 64512/64512 bytes at offset 66560 +63 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +=3D=3D=3D Deleting snapshots =3D=3D=3D + +QEMU X.Y.Z monitor - type 'help' for more information +(qemu) delvm snap1 +(qemu) qemu-io disk0 "read -P0x11 0 63k" +read 64512/64512 bytes at offset 0 +63 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) qemu-io disk0 "read -P0x33 63k 2k" +read 2048/2048 bytes at offset 64512 +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) qemu-io disk0 "read -P0x11 65k 63k" +read 64512/64512 bytes at offset 66560 +63 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +(qemu) quit + +Snapshot list: +ID TAG VM SIZE DATE VM CLOCK I= COUNT +1 snap0 SIZE yyyy-mm-dd hh:mm:ss 00:00:00.000 +No errors were found on the image. + +=3D=3D=3D Error cases =3D=3D=3D + +QEMU X.Y.Z monitor - type 'help' for more information +(qemu) QEMU_PROG: Snapshot 'snap1' does not exist in one or more devices + +QEMU X.Y.Z monitor - type 'help' for more information +(qemu) loadvm snap1 +Error: Snapshot 'snap1' does not exist in one or more devices +(qemu) quit + +QEMU_PROG: 'incoming' and 'loadvm' options are mutually exclusive +QEMU X.Y.Z monitor - type 'help' for more information +(qemu) loadvm snap0 +Error: Device 'disk0' is writable but does not support snapshots +(qemu) delvm snap0 +Error: Device 'disk0' is writable but does not support snapshots +(qemu) savevm snap1 +Error: Device 'disk0' is writable but does not support snapshots +(qemu) quit + +QEMU_PROG: 'preconfig' and 'loadvm' options are mutually exclusive +*** done --=20 2.39.2