From patchwork Wed Jun 10 15:03:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alberto Garcia X-Patchwork-Id: 11598131 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BBB5090 for ; Wed, 10 Jun 2020 15:28:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6C8B02063A for ; Wed, 10 Jun 2020 15:28:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="diycCUxf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6C8B02063A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=igalia.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:43514 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jj2eI-0005HG-JG for patchwork-qemu-devel@patchwork.kernel.org; Wed, 10 Jun 2020 11:28:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36222) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jj2H8-0002sr-Rk; Wed, 10 Jun 2020 11:04:22 -0400 Received: from fanzine.igalia.com ([178.60.130.6]:58262) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jj2Gs-0006wn-Ib; Wed, 10 Jun 2020 11:04:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From; bh=ZwDzi5uaxFAOzfR6dicifFsQBpy+3gaEWdPBJEIrhjE=; b=diycCUxfZbUi0zWw0v7xKeKnkxCi9nCvriSOxRmggtKU/kMhollvFsiuWWI9oViLZt+sCoQ7XzxnNfhb95CyMttGPgKwjiyXxKgg/XVtPHKH7PbAWAyTz6I78aC85v+supGweJmn3FwrvZWq/yuyot8iJFkJSOfnS+OsMXJW78e7y9P7Hhai2AV2Qv8M8px2PZeuyxr57q7ixXqXnAoOjzftgygpESB/VLAwMuHmqe1NkfV80IyUznFDTzDxWnqCrfJ+9tiWOeXk9xdJU5Jg3fNl04pt34paKccjwgA+zM41w1523EeMM5ivU/iLbfTJgL1heObKO0DGsubTHwmBug==; Received: from [81.0.38.199] (helo=perseus.local) by fanzine.igalia.com with esmtpsa (Cipher TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim) id 1jj2GR-0007hN-Se; Wed, 10 Jun 2020 17:03:40 +0200 Received: from berto by perseus.local with local (Exim 4.92) (envelope-from ) id 1jj2GC-0007O0-MA; Wed, 10 Jun 2020 17:03:24 +0200 From: Alberto Garcia To: qemu-devel@nongnu.org Subject: [PATCH v8 34/34] iotests: Add tests for qcow2 images with extended L2 entries Date: Wed, 10 Jun 2020 17:03:12 +0200 Message-Id: <898d88297e4d81aa744b5a39974224f3ae5c0543.1591801197.git.berto@igalia.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=178.60.130.6; envelope-from=berto@igalia.com; helo=fanzine.igalia.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/10 11:03:39 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x (no timestamps) [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Vladimir Sementsov-Ogievskiy , Alberto Garcia , qemu-block@nongnu.org, Derek Su , Max Reitz Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Alberto Garcia Tested-by: Eric Blake Reviewed-by: Eric Blake --- tests/qemu-iotests/271 | 801 +++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/271.out | 676 +++++++++++++++++++++++++++++++ tests/qemu-iotests/group | 1 + 3 files changed, 1478 insertions(+) create mode 100755 tests/qemu-iotests/271 create mode 100644 tests/qemu-iotests/271.out diff --git a/tests/qemu-iotests/271 b/tests/qemu-iotests/271 new file mode 100755 index 0000000000..9c1f50a5b8 --- /dev/null +++ b/tests/qemu-iotests/271 @@ -0,0 +1,801 @@ +#!/bin/bash +# +# Test qcow2 images with extended L2 entries +# +# Copyright (C) 2019-2020 Igalia, S.L. +# Author: Alberto Garcia +# +# 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=berto@igalia.com + +seq="$(basename $0)" +echo "QA output created by $seq" + +here="$PWD" +status=1 # failure is the default! + +_cleanup() +{ + _cleanup_test_img + rm -f "$TEST_IMG.raw" +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter + +_supported_fmt qcow2 +_supported_proto file nfs +_supported_os Linux +_unsupported_imgopts extended_l2 compat=0.10 cluster_size data_file + +l2_offset=$((0x40000)) + +_verify_img() +{ + $QEMU_IMG compare "$TEST_IMG" "$TEST_IMG.raw" | grep -v 'Images are identical' + $QEMU_IMG check "$TEST_IMG" | _filter_qemu_img_check | \ + grep -v 'No errors were found on the image' +} + +# Compare the bitmap of an extended L2 entry against an expected value +_verify_l2_bitmap() +{ + entry_no="$1" # L2 entry number, starting from 0 + expected_alloc="$alloc" # Space-separated list of allocated subcluster indexes + expected_zero="$zero" # Space-separated list of zero subcluster indexes + + offset=$(($l2_offset + $entry_no * 16)) + entry=$(peek_file_be "$TEST_IMG" $offset 8) + offset=$(($offset + 8)) + bitmap=$(peek_file_be "$TEST_IMG" $offset 8) + + expected_bitmap=0 + for bit in $expected_alloc; do + expected_bitmap=$(($expected_bitmap | (1 << $bit))) + done + for bit in $expected_zero; do + expected_bitmap=$(($expected_bitmap | (1 << (32 + $bit)))) + done + printf -v expected_bitmap "%llu" $expected_bitmap # Convert to unsigned + + printf "L2 entry #%d: 0x%016lx %016lx\n" "$entry_no" "$entry" "$bitmap" + if [ "$bitmap" != "$expected_bitmap" ]; then + printf "ERROR: expecting bitmap 0x%016lx\n" "$expected_bitmap" + fi +} + +# This should be called as _run_test c=XXX sc=XXX off=XXX len=XXX cmd=XXX +# c: cluster number (0 if unset) +# sc: subcluster number inside cluster @c (0 if unset) +# off: offset inside subcluster @sc, in kilobytes (0 if unset) +# len: request length, passed directly to qemu-io (e.g: 256, 4k, 1M, ...) +# cmd: the command to pass to qemu-io, must be one of +# write -> write +# zero -> write -z +# unmap -> write -z -u +# compress -> write -c +# discard -> discard +_run_test() +{ + unset c sc off len cmd + for var in "$@"; do eval "$var"; done + case "${cmd:-write}" in + zero) + cmd="write -q -z";; + unmap) + cmd="write -q -z -u";; + compress) + pat=$((${pat:-0} + 1)) + cmd="write -q -c -P ${pat}";; + write) + pat=$((${pat:-0} + 1)) + cmd="write -q -P ${pat}";; + discard) + cmd="discard -q";; + *) + echo "Unknown option $cmd" + exit 1;; + esac + c="${c:-0}" + sc="${sc:-0}" + off="${off:-0}" + offset="$(($c * 64 + $sc * 2 + $off))" + [ "$offset" != 0 ] && offset="${offset}k" + cmd="$cmd ${offset} ${len}" + raw_cmd=$(echo $cmd | sed s/-c//) # Raw images don't support -c + echo $cmd | sed 's/-P [0-9][0-9]\?/-P PATTERN/' + $QEMU_IO -c "$cmd" "$TEST_IMG" | _filter_qemu_io + $QEMU_IO -c "$raw_cmd" -f raw "$TEST_IMG.raw" | _filter_qemu_io + _verify_img + _verify_l2_bitmap "$c" +} + +_reset_img() +{ + size="$1" + $QEMU_IMG create -f raw "$TEST_IMG.raw" "$size" | _filter_img_create + if [ "$use_backing_file" = "yes" ]; then + $QEMU_IMG create -f raw "$TEST_IMG.base" "$size" | _filter_img_create + $QEMU_IO -c "write -q -P 0xFF 0 $size" -f raw "$TEST_IMG.base" | _filter_qemu_io + $QEMU_IO -c "write -q -P 0xFF 0 $size" -f raw "$TEST_IMG.raw" | _filter_qemu_io + _make_test_img -o extended_l2=on -F raw -b "$TEST_IMG.base" "$size" + else + _make_test_img -o extended_l2=on "$size" + fi +} + +# Test that writing to an image with subclusters produces the expected +# results, in images with and without backing files +for use_backing_file in yes no; do + echo + echo "### Standard write tests (backing file: $use_backing_file) ###" + echo + _reset_img 1M + ### Write subcluster #0 (beginning of subcluster) ### + alloc="0"; zero="" + _run_test sc=0 len=1k + + ### Write subcluster #1 (middle of subcluster) ### + alloc="0 1"; zero="" + _run_test sc=1 off=1 len=512 + + ### Write subcluster #2 (end of subcluster) ### + alloc="0 1 2"; zero="" + _run_test sc=2 off=1 len=1k + + ### Write subcluster #3 (full subcluster) ### + alloc="0 1 2 3"; zero="" + _run_test sc=3 len=2k + + ### Write subclusters #4-6 (full subclusters) ### + alloc="$(seq 0 6)"; zero="" + _run_test sc=4 len=6k + + ### Write subclusters #7-9 (partial subclusters) ### + alloc="$(seq 0 9)"; zero="" + _run_test sc=7 off=1 len=4k + + ### Write subcluster #16 (partial subcluster) ### + alloc="$(seq 0 9) 16"; zero="" + _run_test sc=16 len=1k + + ### Write subcluster #31-#33 (cluster overlap) ### + alloc="$(seq 0 9) 16 31"; zero="" + _run_test sc=31 off=1 len=4k + alloc="0 1" ; zero="" + _verify_l2_bitmap 1 + + ### Zero subcluster #1 + alloc="0 $(seq 2 9) 16 31"; zero="1" + _run_test sc=1 len=2k cmd=zero + + ### Zero cluster #0 + alloc=""; zero="$(seq 0 31)" + _run_test sc=0 len=64k cmd=zero + + ### Fill cluster #0 with data + alloc="$(seq 0 31)"; zero="" + _run_test sc=0 len=64k + + ### Zero and unmap half of cluster #0 (this won't unmap it) + alloc="$(seq 16 31)"; zero="$(seq 0 15)" + _run_test sc=0 len=32k cmd=unmap + + ### Zero and unmap cluster #0 + alloc=""; zero="$(seq 0 31)" + _run_test sc=0 len=64k cmd=unmap + + ### Write subcluster #1 (middle of subcluster) + alloc="1"; zero="0 $(seq 2 31)" + _run_test sc=1 off=1 len=512 + + ### Fill cluster #0 with data + alloc="$(seq 0 31)"; zero="" + _run_test sc=0 len=64k + + ### Discard cluster #0 + alloc=""; zero="$(seq 0 31)" + _run_test sc=0 len=64k cmd=discard + + ### Write compressed data to cluster #0 + alloc=""; zero="" + _run_test sc=0 len=64k cmd=compress + + ### Write subcluster #1 (middle of subcluster) + alloc="$(seq 0 31)"; zero="" + _run_test sc=1 off=1 len=512 +done + +# calculate_l2_meta() checks if none of the clusters affected by a +# write operation need COW or changes to their L2 metadata and simply +# returns when they don't. This is a test for that optimization. +# Here clusters #0-#3 are overwritten but only #1 and #2 need changes. +echo +echo '### Overwriting several clusters without COW ###' +echo +use_backing_file="no" _reset_img 1M +# Write cluster #0, subclusters #12-#31 +alloc="$(seq 12 31)"; zero="" +_run_test sc=12 len=40k + +# Write cluster #1, subcluster #13 +alloc="13"; zero="" +_run_test c=1 sc=13 len=2k + +# Zeroize cluster #2, subcluster #14 +alloc="14"; zero="" +_run_test c=2 sc=14 len=2k +alloc=""; zero="14" +_run_test c=2 sc=14 len=2k cmd=zero + +# Write cluster #3, subclusters #0-#17 +alloc="$(seq 0 16)"; zero="" +_run_test c=3 sc=0 len=34k + +# Write from cluster #0, subcluster #12 to cluster #3, subcluster #11 +alloc="$(seq 12 31)"; zero="" +_run_test sc=12 len=192k +alloc="$(seq 0 31)"; zero="" +_verify_l2_bitmap 1 +_verify_l2_bitmap 2 + +alloc="$(seq 0 16)"; zero="" +_verify_l2_bitmap 3 + +# Test different patterns of writing zeroes +for use_backing_file in yes no; do + echo + echo "### Writing zeroes 1: unallocated clusters (backing file: $use_backing_file) ###" + echo + # Note that the image size is not a multiple of the cluster size + _reset_img 2083k + + # Cluster-aligned request from clusters #0 to #2 + alloc=""; zero="$(seq 0 31)" + _run_test c=0 sc=0 len=192k cmd=zero + _verify_l2_bitmap 1 + _verify_l2_bitmap 2 + + # Subcluster-aligned request from clusters #3 to #5 + alloc=""; zero="$(seq 16 31)" + _run_test c=3 sc=16 len=128k cmd=zero + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 4 + alloc=""; zero="$(seq 0 15)" + _verify_l2_bitmap 5 + + # Unaligned request from clusters #6 to #8 + if [ "$use_backing_file" = "yes" ]; then + alloc="15"; zero="$(seq 16 31)" # copy-on-write happening here + else + alloc=""; zero="$(seq 15 31)" + fi + _run_test c=6 sc=15 off=1 len=128k cmd=zero + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 7 + if [ "$use_backing_file" = "yes" ]; then + alloc="15"; zero="$(seq 0 14)" # copy-on-write happening here + else + alloc=""; zero="$(seq 0 15)" + fi + _verify_l2_bitmap 8 + + echo + echo "### Writing zeroes 2: allocated clusters (backing file: $use_backing_file) ###" + echo + alloc="$(seq 0 31)"; zero="" + _run_test c=9 sc=0 len=576k + _verify_l2_bitmap 10 + _verify_l2_bitmap 11 + _verify_l2_bitmap 12 + _verify_l2_bitmap 13 + _verify_l2_bitmap 14 + _verify_l2_bitmap 15 + _verify_l2_bitmap 16 + _verify_l2_bitmap 17 + + # Cluster-aligned request from clusters #9 to #11 + alloc=""; zero="$(seq 0 31)" + _run_test c=9 sc=0 len=192k cmd=zero + _verify_l2_bitmap 10 + _verify_l2_bitmap 11 + + # Subcluster-aligned request from clusters #12 to #14 + alloc="$(seq 0 15)"; zero="$(seq 16 31)" + _run_test c=12 sc=16 len=128k cmd=zero + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 13 + alloc="$(seq 16 31)"; zero="$(seq 0 15)" + _verify_l2_bitmap 14 + + # Unaligned request from clusters #15 to #17 + alloc="$(seq 0 15)"; zero="$(seq 16 31)" + _run_test c=15 sc=15 off=1 len=128k cmd=zero + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 16 + alloc="$(seq 15 31)"; zero="$(seq 0 14)" + _verify_l2_bitmap 17 + + echo + echo "### Writing zeroes 3: compressed clusters (backing file: $use_backing_file) ###" + echo + alloc=""; zero="" + for c in $(seq 18 28); do + _run_test c=$c sc=0 len=64k cmd=compress + done + + # Cluster-aligned request from clusters #18 to #20 + alloc=""; zero="$(seq 0 31)" + _run_test c=18 sc=0 len=192k cmd=zero + _verify_l2_bitmap 19 + _verify_l2_bitmap 20 + + # Subcluster-aligned request from clusters #21 to #23. + # We cannot partially zero a compressed cluster so the code + # returns -ENOTSUP, which means copy-on-write of the compressed + # data and fill the rest with actual zeroes on disk. + # TODO: cluster #22 should use the 'all zeroes' bits. + alloc="$(seq 0 31)"; zero="" + _run_test c=21 sc=16 len=128k cmd=zero + _verify_l2_bitmap 22 + _verify_l2_bitmap 23 + + # Unaligned request from clusters #24 to #26 + # In this case QEMU internally sends a 1k request followed by a + # subcluster-aligned 128k request. The first request decompresses + # cluster #24, but that's not enough to perform the second request + # efficiently because it partially writes to cluster #26 (which is + # compressed) so we hit the same problem as before. + alloc="$(seq 0 31)"; zero="" + _run_test c=24 sc=15 off=1 len=129k cmd=zero + _verify_l2_bitmap 25 + _verify_l2_bitmap 26 + + # Unaligned request from clusters #27 to #29 + # Similar to the previous case, but this time the tail of the + # request does not correspond to a compressed cluster, so it can + # be zeroed efficiently. + # Note that the very last subcluster is partially written, so if + # there's a backing file we need to perform cow. + alloc="$(seq 0 15)"; zero="$(seq 16 31)" + _run_test c=27 sc=15 off=1 len=128k cmd=zero + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 28 + if [ "$use_backing_file" = "yes" ]; then + alloc="15"; zero="$(seq 0 14)" # copy-on-write happening here + else + alloc=""; zero="$(seq 0 15)" + fi + _verify_l2_bitmap 29 + + echo + echo "### Writing zeroes 4: other tests (backing file: $use_backing_file) ###" + echo + # Unaligned request in the middle of cluster #30. + # If there's a backing file we need to allocate and do + # copy-on-write on the partially zeroed subclusters. + # If not we can set the 'all zeroes' bit on them. + if [ "$use_backing_file" = "yes" ]; then + alloc="15 19"; zero="$(seq 16 18)" # copy-on-write happening here + else + alloc=""; zero="$(seq 15 19)" + fi + _run_test c=30 sc=15 off=1 len=8k cmd=zero + + # Fill the last cluster with zeroes, up to the end of the image + # (the image size is not a multiple of the cluster or subcluster size). + alloc=""; zero="$(seq 0 17)" + _run_test c=32 sc=0 len=35k cmd=zero +done + +# Zero + unmap +for use_backing_file in yes no; do + echo + echo "### Zero + unmap 1: allocated clusters (backing file: $use_backing_file) ###" + echo + # Note that the image size is not a multiple of the cluster size + _reset_img 2083k + alloc="$(seq 0 31)"; zero="" + _run_test c=9 sc=0 len=576k + _verify_l2_bitmap 10 + _verify_l2_bitmap 11 + _verify_l2_bitmap 12 + _verify_l2_bitmap 13 + _verify_l2_bitmap 14 + _verify_l2_bitmap 15 + _verify_l2_bitmap 16 + _verify_l2_bitmap 17 + + # Cluster-aligned request from clusters #9 to #11 + alloc=""; zero="$(seq 0 31)" + _run_test c=9 sc=0 len=192k cmd=unmap + _verify_l2_bitmap 10 + _verify_l2_bitmap 11 + + # Subcluster-aligned request from clusters #12 to #14 + alloc="$(seq 0 15)"; zero="$(seq 16 31)" + _run_test c=12 sc=16 len=128k cmd=unmap + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 13 + alloc="$(seq 16 31)"; zero="$(seq 0 15)" + _verify_l2_bitmap 14 + + # Unaligned request from clusters #15 to #17 + alloc="$(seq 0 15)"; zero="$(seq 16 31)" + _run_test c=15 sc=15 off=1 len=128k cmd=unmap + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 16 + alloc="$(seq 15 31)"; zero="$(seq 0 14)" + _verify_l2_bitmap 17 + + echo + echo "### Zero + unmap 2: compressed clusters (backing file: $use_backing_file) ###" + echo + alloc=""; zero="" + for c in $(seq 18 28); do + _run_test c=$c sc=0 len=64k cmd=compress + done + + # Cluster-aligned request from clusters #18 to #20 + alloc=""; zero="$(seq 0 31)" + _run_test c=18 sc=0 len=192k cmd=unmap + _verify_l2_bitmap 19 + _verify_l2_bitmap 20 + + # Subcluster-aligned request from clusters #21 to #23. + # We cannot partially zero a compressed cluster so the code + # returns -ENOTSUP, which means copy-on-write of the compressed + # data and fill the rest with actual zeroes on disk. + # TODO: cluster #22 should use the 'all zeroes' bits. + alloc="$(seq 0 31)"; zero="" + _run_test c=21 sc=16 len=128k cmd=unmap + _verify_l2_bitmap 22 + _verify_l2_bitmap 23 + + # Unaligned request from clusters #24 to #26 + # In this case QEMU internally sends a 1k request followed by a + # subcluster-aligned 128k request. The first request decompresses + # cluster #24, but that's not enough to perform the second request + # efficiently because it partially writes to cluster #26 (which is + # compressed) so we hit the same problem as before. + alloc="$(seq 0 31)"; zero="" + _run_test c=24 sc=15 off=1 len=129k cmd=unmap + _verify_l2_bitmap 25 + _verify_l2_bitmap 26 + + # Unaligned request from clusters #27 to #29 + # Similar to the previous case, but this time the tail of the + # request does not correspond to a compressed cluster, so it can + # be zeroed efficiently. + # Note that the very last subcluster is partially written, so if + # there's a backing file we need to perform cow. + alloc="$(seq 0 15)"; zero="$(seq 16 31)" + _run_test c=27 sc=15 off=1 len=128k cmd=unmap + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 28 + if [ "$use_backing_file" = "yes" ]; then + alloc="15"; zero="$(seq 0 14)" # copy-on-write happening here + else + alloc=""; zero="$(seq 0 15)" + fi + _verify_l2_bitmap 29 +done + +# Test qcow2_cluster_discard() with full and normal discards +for use_backing_file in yes no; do + echo + echo "### Discarding clusters with non-zero bitmaps (backing file: $use_backing_file) ###" + echo + if [ "$use_backing_file" = "yes" ]; then + _make_test_img -o extended_l2=on -F raw -b "$TEST_IMG.base" 1M + else + _make_test_img -o extended_l2=on 1M + fi + # Write clusters #0-#2 and then discard them + $QEMU_IO -c 'write -q 0 128k' "$TEST_IMG" + $QEMU_IO -c 'discard -q 0 128k' "$TEST_IMG" + # 'qemu-io discard' doesn't do a full discard, it zeroizes the + # cluster, so both clusters have all zero bits set now + alloc=""; zero="$(seq 0 31)" + _verify_l2_bitmap 0 + _verify_l2_bitmap 1 + # Now mark the 2nd half of the subclusters from cluster #0 as unallocated + poke_file "$TEST_IMG" $(($l2_offset+8)) "\x00\x00" + # Discard cluster #0 again to see how the zero bits have changed + $QEMU_IO -c 'discard -q 0 64k' "$TEST_IMG" + # And do a full discard of cluster #1 by shrinking and growing the image + $QEMU_IMG resize --shrink "$TEST_IMG" 64k + $QEMU_IMG resize "$TEST_IMG" 1M + # A normal discard sets all 'zero' bits only if the image has a + # backing file, otherwise it won't touch them. + if [ "$use_backing_file" = "yes" ]; then + alloc=""; zero="$(seq 0 31)" + else + alloc=""; zero="$(seq 0 15)" + fi + _verify_l2_bitmap 0 + # A full discard should clear the L2 entry completely. However + # when growing an image with a backing file the new clusters are + # zeroized to hide the stale data from the backing file + if [ "$use_backing_file" = "yes" ]; then + alloc=""; zero="$(seq 0 31)" + else + alloc=""; zero="" + fi + _verify_l2_bitmap 1 +done + +# Test that corrupted L2 entries are detected in both read and write +# operations +for corruption_test_cmd in read write; do + echo + echo "### Corrupted L2 entries - $corruption_test_cmd test (allocated) ###" + echo + echo "# 'cluster is zero' bit set on the standard cluster descriptor" + echo + # We actually don't consider this a corrupted image. + # The 'cluster is zero' bit is unused in extended L2 entries so + # QEMU ignores it. + # TODO: maybe treat the image as corrupted and make qemu-img check fix it? + _make_test_img -o extended_l2=on 1M + $QEMU_IO -c 'write -q -P 0x11 0 2k' "$TEST_IMG" + poke_file "$TEST_IMG" $(($l2_offset+7)) "\x01" + alloc="0"; zero="" + _verify_l2_bitmap 0 + $QEMU_IO -c "$corruption_test_cmd -q -P 0x11 0 1k" "$TEST_IMG" + if [ "$corruption_test_cmd" = "write" ]; then + alloc="0"; zero="" + fi + _verify_l2_bitmap 0 + + echo + echo "# Both 'subcluster is zero' and 'subcluster is allocated' bits set" + echo + _make_test_img -o extended_l2=on 1M + # Write from the middle of cluster #0 to the middle of cluster #2 + $QEMU_IO -c 'write -q 32k 128k' "$TEST_IMG" + # Corrupt the L2 entry from cluster #1 + poke_file_be "$TEST_IMG" $(($l2_offset+24)) 4 1 + alloc="$(seq 0 31)"; zero="0" + _verify_l2_bitmap 1 + $QEMU_IO -c "$corruption_test_cmd 0 192k" "$TEST_IMG" + + echo + echo "### Corrupted L2 entries - $corruption_test_cmd test (unallocated) ###" + echo + echo "# 'cluster is zero' bit set on the standard cluster descriptor" + echo + # We actually don't consider this a corrupted image. + # The 'cluster is zero' bit is unused in extended L2 entries so + # QEMU ignores it. + # TODO: maybe treat the image as corrupted and make qemu-img check fix it? + _make_test_img -o extended_l2=on 1M + # We want to modify the (empty) L2 entry from cluster #0, + # but we write to #4 in order to initialize the L2 table first + $QEMU_IO -c 'write -q 256k 1k' "$TEST_IMG" + poke_file "$TEST_IMG" $(($l2_offset+7)) "\x01" + alloc=""; zero="" + _verify_l2_bitmap 0 + $QEMU_IO -c "$corruption_test_cmd -q 0 1k" "$TEST_IMG" + if [ "$corruption_test_cmd" = "write" ]; then + alloc="0"; zero="" + fi + _verify_l2_bitmap 0 + + echo + echo "# 'subcluster is allocated' bit set" + echo + _make_test_img -o extended_l2=on 1M + # We want to corrupt the (empty) L2 entry from cluster #0, + # but we write to #4 in order to initialize the L2 table first + $QEMU_IO -c 'write -q 256k 1k' "$TEST_IMG" + poke_file "$TEST_IMG" $(($l2_offset+15)) "\x01" + alloc="0"; zero="" + _verify_l2_bitmap 0 + $QEMU_IO -c "$corruption_test_cmd 0 1k" "$TEST_IMG" + + echo + echo "# Both 'subcluster is zero' and 'subcluster is allocated' bits set" + echo + _make_test_img -o extended_l2=on 1M + # We want to corrupt the (empty) L2 entry from cluster #1, + # but we write to #4 in order to initialize the L2 table first + $QEMU_IO -c 'write -q 256k 1k' "$TEST_IMG" + # Corrupt the L2 entry from cluster #1 + poke_file_be "$TEST_IMG" $(($l2_offset+24)) 8 $(((1 << 32) | 1)) + alloc="0"; zero="0" + _verify_l2_bitmap 1 + $QEMU_IO -c "$corruption_test_cmd 0 192k" "$TEST_IMG" + + echo + echo "### Compressed cluster with subcluster bitmap != 0 - $corruption_test_cmd test ###" + echo + # We actually don't consider this a corrupted image. + # The bitmap in compressed clusters is unused so QEMU should just ignore it. + _make_test_img -o extended_l2=on 1M + $QEMU_IO -c 'write -q -P 11 -c 0 64k' "$TEST_IMG" + # Change the L2 bitmap to allocate subcluster #31 and zeroize subcluster #0 + poke_file "$TEST_IMG" $(($l2_offset+11)) "\x01\x80" + alloc="31"; zero="0" + _verify_l2_bitmap 0 + $QEMU_IO -c "$corruption_test_cmd -P 11 0 64k" "$TEST_IMG" | _filter_qemu_io + # Writing allocates a new uncompressed cluster so we get a new bitmap + if [ "$corruption_test_cmd" = "write" ]; then + alloc="$(seq 0 31)"; zero="" + fi + _verify_l2_bitmap 0 +done + +echo +echo "### Image creation options ###" +echo +echo "# cluster_size < 16k" +_make_test_img -o extended_l2=on,cluster_size=8k 1M + +echo "# backing file and preallocation=metadata" +# For preallocation with backing files, create a backing file first +$QEMU_IMG create -f raw "$TEST_IMG.base" 1M | _filter_img_create +$QEMU_IO -c "write -q -P 0xff 0 1M" -f raw "$TEST_IMG.base" | _filter_qemu_io + +_make_test_img -o extended_l2=on,preallocation=metadata -F raw -b "$TEST_IMG.base" 512k +$QEMU_IMG resize "$TEST_IMG" 1M +$QEMU_IO -c 'read -P 0xff 0 512k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 512k 512k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IMG map "$TEST_IMG" | _filter_testdir + +echo "# backing file and preallocation=falloc" +_make_test_img -o extended_l2=on,preallocation=falloc -F raw -b "$TEST_IMG.base" 512k +$QEMU_IMG resize "$TEST_IMG" 1M +$QEMU_IO -c 'read -P 0xff 0 512k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 512k 512k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IMG map "$TEST_IMG" | _filter_testdir + +echo "# backing file and preallocation=full" +_make_test_img -o extended_l2=on,preallocation=full -F raw -b "$TEST_IMG.base" 512k +$QEMU_IMG resize "$TEST_IMG" 1M +$QEMU_IO -c 'read -P 0xff 0 512k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 512k 512k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IMG map "$TEST_IMG" | _filter_testdir + +echo +echo "### Image resizing with preallocation and backing files ###" +echo +# In this case the new subclusters must have the 'all zeroes' bit set +echo "# resize --preallocation=metadata" +_make_test_img -o extended_l2=on -F raw -b "$TEST_IMG.base" 503k +$QEMU_IMG resize --preallocation=metadata "$TEST_IMG" 1013k +$QEMU_IO -c 'read -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 503k 510k' "$TEST_IMG" | _filter_qemu_io + +# In this case and the next one the new subclusters must be allocated +echo "# resize --preallocation=falloc" +_make_test_img -o extended_l2=on -F raw -b "$TEST_IMG.base" 503k +$QEMU_IMG resize --preallocation=falloc "$TEST_IMG" 1013k +$QEMU_IO -c 'read -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 503k 510k' "$TEST_IMG" | _filter_qemu_io + +echo "# resize --preallocation=full" +_make_test_img -o extended_l2=on -F raw -b "$TEST_IMG.base" 503k +$QEMU_IMG resize --preallocation=full "$TEST_IMG" 1013k +$QEMU_IO -c 'read -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 503k 510k' "$TEST_IMG" | _filter_qemu_io + +echo +echo "### Image resizing with preallocation without backing files ###" +echo +# In this case the new subclusters must have the 'all zeroes' bit set +echo "# resize --preallocation=metadata" +_make_test_img -o extended_l2=on 503k +$QEMU_IO -c 'write -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IMG resize --preallocation=metadata "$TEST_IMG" 1013k +$QEMU_IO -c 'read -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 503k 510k' "$TEST_IMG" | _filter_qemu_io + +# In this case and the next one the new subclusters must be allocated +echo "# resize --preallocation=falloc" +_make_test_img -o extended_l2=on 503k +$QEMU_IO -c 'write -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IMG resize --preallocation=falloc "$TEST_IMG" 1013k +$QEMU_IO -c 'read -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 503k 510k' "$TEST_IMG" | _filter_qemu_io + +echo "# resize --preallocation=full" +_make_test_img -o extended_l2=on 503k +$QEMU_IO -c 'write -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IMG resize --preallocation=full "$TEST_IMG" 1013k +$QEMU_IO -c 'read -P 0xff 0 503k' "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c 'read -P 0x00 503k 510k' "$TEST_IMG" | _filter_qemu_io + +echo +echo "### qemu-img measure ###" +echo +echo "# 512MB, extended_l2=off" # This needs one L2 table +$QEMU_IMG measure --size 512M -O qcow2 -o extended_l2=off +echo "# 512MB, extended_l2=on" # This needs two L2 tables +$QEMU_IMG measure --size 512M -O qcow2 -o extended_l2=on + +echo "# 16K clusters, 64GB, extended_l2=off" # This needs one full L1 table cluster +$QEMU_IMG measure --size 64G -O qcow2 -o cluster_size=16k,extended_l2=off +echo "# 16K clusters, 64GB, extended_l2=on" # This needs two full L2 table clusters +$QEMU_IMG measure --size 64G -O qcow2 -o cluster_size=16k,extended_l2=on + +echo "# 8k clusters" # This should fail +$QEMU_IMG measure --size 1M -O qcow2 -o cluster_size=8k,extended_l2=on + +echo "# 1024 TB" # Maximum allowed size with extended_l2=on and 64K clusters +$QEMU_IMG measure --size 1024T -O qcow2 -o extended_l2=on +echo "# 1025 TB" # This should fail +$QEMU_IMG measure --size 1025T -O qcow2 -o extended_l2=on + +echo +echo "### qemu-img amend ###" +echo +_make_test_img -o extended_l2=on 1M +$QEMU_IMG amend -o extended_l2=off "$TEST_IMG" && echo "Unexpected pass" + +_make_test_img -o extended_l2=off 1M +$QEMU_IMG amend -o extended_l2=on "$TEST_IMG" && echo "Unexpected pass" + +echo +echo "### Test copy-on-write on an image with snapshots ###" +echo +_make_test_img -o extended_l2=on 1M + +# For each cluster from #0 to #9 this loop zeroes subcluster #7 +# and allocates subclusters #13 and #18. +alloc="13 18"; zero="7" +for c in $(seq 0 9); do + $QEMU_IO -c "write -q -z $((64*$c+14))k 2k" \ + -c "write -q -P $((0xd0+$c)) $((64*$c+26))k 2k" \ + -c "write -q -P $((0xe0+$c)) $((64*$c+36))k 2k" "$TEST_IMG" + _verify_l2_bitmap "$c" +done + +# Create a snapshot and set l2_offset to the new L2 table +$QEMU_IMG snapshot -c snap1 "$TEST_IMG" +l2_offset=1114112 # 0x110000 + +# Write different patterns to each one of the clusters +# in order to see how copy-on-write behaves in each case. +$QEMU_IO -c "write -q -P 0xf0 $((64*0+30))k 1k" \ + -c "write -q -P 0xf1 $((64*1+20))k 1k" \ + -c "write -q -P 0xf2 $((64*2+40))k 1k" \ + -c "write -q -P 0xf3 $((64*3+26))k 1k" \ + -c "write -q -P 0xf4 $((64*4+14))k 1k" \ + -c "write -q -P 0xf5 $((64*5+1))k 1k" \ + -c "write -q -z $((64*6+30))k 3k" \ + -c "write -q -z $((64*7+26))k 2k" \ + -c "write -q -z $((64*8+26))k 1k" \ + -c "write -q -z $((64*9+12))k 1k" \ + "$TEST_IMG" +alloc="$(seq 13 18)"; zero="7" _verify_l2_bitmap 0 +alloc="$(seq 10 18)"; zero="7" _verify_l2_bitmap 1 +alloc="$(seq 13 20)"; zero="7" _verify_l2_bitmap 2 +alloc="$(seq 13 18)"; zero="7" _verify_l2_bitmap 3 +alloc="$(seq 7 18)"; zero="" _verify_l2_bitmap 4 +alloc="$(seq 0 18)"; zero="" _verify_l2_bitmap 5 +alloc="13 18"; zero="7 15 16" _verify_l2_bitmap 6 +alloc="18"; zero="7 13" _verify_l2_bitmap 7 +alloc="$(seq 13 18)"; zero="7" _verify_l2_bitmap 8 +alloc="13 18"; zero="6 7" _verify_l2_bitmap 9 + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 diff --git a/tests/qemu-iotests/271.out b/tests/qemu-iotests/271.out new file mode 100644 index 0000000000..067026623f --- /dev/null +++ b/tests/qemu-iotests/271.out @@ -0,0 +1,676 @@ +QA output created by 271 + +### Standard write tests (backing file: yes) ### + +Formatting 'TEST_DIR/t.IMGFMT.raw', fmt=raw size=1048576 +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=raw size=1048576 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw +write -q -P PATTERN 0 1k +L2 entry #0: 0x8000000000050000 0000000000000001 +write -q -P PATTERN 3k 512 +L2 entry #0: 0x8000000000050000 0000000000000003 +write -q -P PATTERN 5k 1k +L2 entry #0: 0x8000000000050000 0000000000000007 +write -q -P PATTERN 6k 2k +L2 entry #0: 0x8000000000050000 000000000000000f +write -q -P PATTERN 8k 6k +L2 entry #0: 0x8000000000050000 000000000000007f +write -q -P PATTERN 15k 4k +L2 entry #0: 0x8000000000050000 00000000000003ff +write -q -P PATTERN 32k 1k +L2 entry #0: 0x8000000000050000 00000000000103ff +write -q -P PATTERN 63k 4k +L2 entry #0: 0x8000000000050000 00000000800103ff +L2 entry #1: 0x8000000000060000 0000000000000003 +write -q -z 2k 2k +L2 entry #0: 0x8000000000050000 00000002800103fd +write -q -z 0 64k +L2 entry #0: 0x8000000000050000 ffffffff00000000 +write -q -P PATTERN 0 64k +L2 entry #0: 0x8000000000050000 00000000ffffffff +write -q -z -u 0 32k +L2 entry #0: 0x8000000000050000 0000ffffffff0000 +write -q -z -u 0 64k +L2 entry #0: 0x0000000000000000 ffffffff00000000 +write -q -P PATTERN 3k 512 +L2 entry #0: 0x8000000000050000 fffffffd00000002 +write -q -P PATTERN 0 64k +L2 entry #0: 0x8000000000050000 00000000ffffffff +discard -q 0 64k +L2 entry #0: 0x0000000000000000 ffffffff00000000 +write -q -c -P PATTERN 0 64k +L2 entry #0: 0x4000000000050000 0000000000000000 +write -q -P PATTERN 3k 512 +L2 entry #0: 0x8000000000070000 00000000ffffffff + +### Standard write tests (backing file: no) ### + +Formatting 'TEST_DIR/t.IMGFMT.raw', fmt=raw size=1048576 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +write -q -P PATTERN 0 1k +L2 entry #0: 0x8000000000050000 0000000000000001 +write -q -P PATTERN 3k 512 +L2 entry #0: 0x8000000000050000 0000000000000003 +write -q -P PATTERN 5k 1k +L2 entry #0: 0x8000000000050000 0000000000000007 +write -q -P PATTERN 6k 2k +L2 entry #0: 0x8000000000050000 000000000000000f +write -q -P PATTERN 8k 6k +L2 entry #0: 0x8000000000050000 000000000000007f +write -q -P PATTERN 15k 4k +L2 entry #0: 0x8000000000050000 00000000000003ff +write -q -P PATTERN 32k 1k +L2 entry #0: 0x8000000000050000 00000000000103ff +write -q -P PATTERN 63k 4k +L2 entry #0: 0x8000000000050000 00000000800103ff +L2 entry #1: 0x8000000000060000 0000000000000003 +write -q -z 2k 2k +L2 entry #0: 0x8000000000050000 00000002800103fd +write -q -z 0 64k +L2 entry #0: 0x8000000000050000 ffffffff00000000 +write -q -P PATTERN 0 64k +L2 entry #0: 0x8000000000050000 00000000ffffffff +write -q -z -u 0 32k +L2 entry #0: 0x8000000000050000 0000ffffffff0000 +write -q -z -u 0 64k +L2 entry #0: 0x0000000000000000 ffffffff00000000 +write -q -P PATTERN 3k 512 +L2 entry #0: 0x8000000000050000 fffffffd00000002 +write -q -P PATTERN 0 64k +L2 entry #0: 0x8000000000050000 00000000ffffffff +discard -q 0 64k +L2 entry #0: 0x0000000000000000 ffffffff00000000 +write -q -c -P PATTERN 0 64k +L2 entry #0: 0x4000000000050000 0000000000000000 +write -q -P PATTERN 3k 512 +L2 entry #0: 0x8000000000070000 00000000ffffffff + +### Overwriting several clusters without COW ### + +Formatting 'TEST_DIR/t.IMGFMT.raw', fmt=raw size=1048576 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +write -q -P PATTERN 24k 40k +L2 entry #0: 0x8000000000050000 00000000fffff000 +write -q -P PATTERN 90k 2k +L2 entry #1: 0x8000000000060000 0000000000002000 +write -q -P PATTERN 156k 2k +L2 entry #2: 0x8000000000070000 0000000000004000 +write -q -z 156k 2k +L2 entry #2: 0x8000000000070000 0000400000000000 +write -q -P PATTERN 192k 34k +L2 entry #3: 0x8000000000080000 000000000001ffff +write -q -P PATTERN 24k 192k +L2 entry #0: 0x8000000000050000 00000000fffff000 +L2 entry #1: 0x8000000000060000 00000000ffffffff +L2 entry #2: 0x8000000000070000 00000000ffffffff +L2 entry #3: 0x8000000000080000 000000000001ffff + +### Writing zeroes 1: unallocated clusters (backing file: yes) ### + +Formatting 'TEST_DIR/t.IMGFMT.raw', fmt=raw size=2132992 +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=raw size=2132992 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2132992 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw +write -q -z 0 192k +L2 entry #0: 0x0000000000000000 ffffffff00000000 +L2 entry #1: 0x0000000000000000 ffffffff00000000 +L2 entry #2: 0x0000000000000000 ffffffff00000000 +write -q -z 224k 128k +L2 entry #3: 0x0000000000000000 ffff000000000000 +L2 entry #4: 0x0000000000000000 ffffffff00000000 +L2 entry #5: 0x0000000000000000 0000ffff00000000 +write -q -z 415k 128k +L2 entry #6: 0x8000000000050000 ffff000000008000 +L2 entry #7: 0x0000000000000000 ffffffff00000000 +L2 entry #8: 0x8000000000060000 00007fff00008000 + +### Writing zeroes 2: allocated clusters (backing file: yes) ### + +write -q -P PATTERN 576k 576k +L2 entry #9: 0x8000000000070000 00000000ffffffff +L2 entry #10: 0x8000000000080000 00000000ffffffff +L2 entry #11: 0x8000000000090000 00000000ffffffff +L2 entry #12: 0x80000000000a0000 00000000ffffffff +L2 entry #13: 0x80000000000b0000 00000000ffffffff +L2 entry #14: 0x80000000000c0000 00000000ffffffff +L2 entry #15: 0x80000000000d0000 00000000ffffffff +L2 entry #16: 0x80000000000e0000 00000000ffffffff +L2 entry #17: 0x80000000000f0000 00000000ffffffff +write -q -z 576k 192k +L2 entry #9: 0x8000000000070000 ffffffff00000000 +L2 entry #10: 0x8000000000080000 ffffffff00000000 +L2 entry #11: 0x8000000000090000 ffffffff00000000 +write -q -z 800k 128k +L2 entry #12: 0x80000000000a0000 ffff00000000ffff +L2 entry #13: 0x80000000000b0000 ffffffff00000000 +L2 entry #14: 0x80000000000c0000 0000ffffffff0000 +write -q -z 991k 128k +L2 entry #15: 0x80000000000d0000 ffff00000000ffff +L2 entry #16: 0x80000000000e0000 ffffffff00000000 +L2 entry #17: 0x80000000000f0000 00007fffffff8000 + +### Writing zeroes 3: compressed clusters (backing file: yes) ### + +write -q -c -P PATTERN 1152k 64k +L2 entry #18: 0x4000000000100000 0000000000000000 +write -q -c -P PATTERN 1216k 64k +L2 entry #19: 0x4000000000110000 0000000000000000 +write -q -c -P PATTERN 1280k 64k +L2 entry #20: 0x4000000000120000 0000000000000000 +write -q -c -P PATTERN 1344k 64k +L2 entry #21: 0x4000000000130000 0000000000000000 +write -q -c -P PATTERN 1408k 64k +L2 entry #22: 0x4000000000140000 0000000000000000 +write -q -c -P PATTERN 1472k 64k +L2 entry #23: 0x4000000000150000 0000000000000000 +write -q -c -P PATTERN 1536k 64k +L2 entry #24: 0x4000000000160000 0000000000000000 +write -q -c -P PATTERN 1600k 64k +L2 entry #25: 0x4000000000170000 0000000000000000 +write -q -c -P PATTERN 1664k 64k +L2 entry #26: 0x4000000000180000 0000000000000000 +write -q -c -P PATTERN 1728k 64k +L2 entry #27: 0x4000000000190000 0000000000000000 +write -q -c -P PATTERN 1792k 64k +L2 entry #28: 0x40000000001a0000 0000000000000000 +write -q -z 1152k 192k +L2 entry #18: 0x0000000000000000 ffffffff00000000 +L2 entry #19: 0x0000000000000000 ffffffff00000000 +L2 entry #20: 0x0000000000000000 ffffffff00000000 +write -q -z 1376k 128k +L2 entry #21: 0x8000000000100000 00000000ffffffff +L2 entry #22: 0x8000000000110000 00000000ffffffff +L2 entry #23: 0x8000000000120000 00000000ffffffff +write -q -z 1567k 129k +L2 entry #24: 0x8000000000130000 00000000ffffffff +L2 entry #25: 0x8000000000140000 00000000ffffffff +L2 entry #26: 0x8000000000150000 00000000ffffffff +write -q -z 1759k 128k +L2 entry #27: 0x8000000000160000 ffff00000000ffff +L2 entry #28: 0x0000000000000000 ffffffff00000000 +L2 entry #29: 0x8000000000170000 00007fff00008000 + +### Writing zeroes 4: other tests (backing file: yes) ### + +write -q -z 1951k 8k +L2 entry #30: 0x8000000000180000 0007000000088000 +write -q -z 2048k 35k +L2 entry #32: 0x0000000000000000 0003ffff00000000 + +### Writing zeroes 1: unallocated clusters (backing file: no) ### + +Formatting 'TEST_DIR/t.IMGFMT.raw', fmt=raw size=2132992 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2132992 +write -q -z 0 192k +L2 entry #0: 0x0000000000000000 ffffffff00000000 +L2 entry #1: 0x0000000000000000 ffffffff00000000 +L2 entry #2: 0x0000000000000000 ffffffff00000000 +write -q -z 224k 128k +L2 entry #3: 0x0000000000000000 ffff000000000000 +L2 entry #4: 0x0000000000000000 ffffffff00000000 +L2 entry #5: 0x0000000000000000 0000ffff00000000 +write -q -z 415k 128k +L2 entry #6: 0x0000000000000000 ffff800000000000 +L2 entry #7: 0x0000000000000000 ffffffff00000000 +L2 entry #8: 0x0000000000000000 0000ffff00000000 + +### Writing zeroes 2: allocated clusters (backing file: no) ### + +write -q -P PATTERN 576k 576k +L2 entry #9: 0x8000000000050000 00000000ffffffff +L2 entry #10: 0x8000000000060000 00000000ffffffff +L2 entry #11: 0x8000000000070000 00000000ffffffff +L2 entry #12: 0x8000000000080000 00000000ffffffff +L2 entry #13: 0x8000000000090000 00000000ffffffff +L2 entry #14: 0x80000000000a0000 00000000ffffffff +L2 entry #15: 0x80000000000b0000 00000000ffffffff +L2 entry #16: 0x80000000000c0000 00000000ffffffff +L2 entry #17: 0x80000000000d0000 00000000ffffffff +write -q -z 576k 192k +L2 entry #9: 0x8000000000050000 ffffffff00000000 +L2 entry #10: 0x8000000000060000 ffffffff00000000 +L2 entry #11: 0x8000000000070000 ffffffff00000000 +write -q -z 800k 128k +L2 entry #12: 0x8000000000080000 ffff00000000ffff +L2 entry #13: 0x8000000000090000 ffffffff00000000 +L2 entry #14: 0x80000000000a0000 0000ffffffff0000 +write -q -z 991k 128k +L2 entry #15: 0x80000000000b0000 ffff00000000ffff +L2 entry #16: 0x80000000000c0000 ffffffff00000000 +L2 entry #17: 0x80000000000d0000 00007fffffff8000 + +### Writing zeroes 3: compressed clusters (backing file: no) ### + +write -q -c -P PATTERN 1152k 64k +L2 entry #18: 0x40000000000e0000 0000000000000000 +write -q -c -P PATTERN 1216k 64k +L2 entry #19: 0x40000000000f0000 0000000000000000 +write -q -c -P PATTERN 1280k 64k +L2 entry #20: 0x4000000000100000 0000000000000000 +write -q -c -P PATTERN 1344k 64k +L2 entry #21: 0x4000000000110000 0000000000000000 +write -q -c -P PATTERN 1408k 64k +L2 entry #22: 0x4000000000120000 0000000000000000 +write -q -c -P PATTERN 1472k 64k +L2 entry #23: 0x4000000000130000 0000000000000000 +write -q -c -P PATTERN 1536k 64k +L2 entry #24: 0x4000000000140000 0000000000000000 +write -q -c -P PATTERN 1600k 64k +L2 entry #25: 0x4000000000150000 0000000000000000 +write -q -c -P PATTERN 1664k 64k +L2 entry #26: 0x4000000000160000 0000000000000000 +write -q -c -P PATTERN 1728k 64k +L2 entry #27: 0x4000000000170000 0000000000000000 +write -q -c -P PATTERN 1792k 64k +L2 entry #28: 0x4000000000180000 0000000000000000 +write -q -z 1152k 192k +L2 entry #18: 0x0000000000000000 ffffffff00000000 +L2 entry #19: 0x0000000000000000 ffffffff00000000 +L2 entry #20: 0x0000000000000000 ffffffff00000000 +write -q -z 1376k 128k +L2 entry #21: 0x80000000000e0000 00000000ffffffff +L2 entry #22: 0x80000000000f0000 00000000ffffffff +L2 entry #23: 0x8000000000100000 00000000ffffffff +write -q -z 1567k 129k +L2 entry #24: 0x8000000000110000 00000000ffffffff +L2 entry #25: 0x8000000000120000 00000000ffffffff +L2 entry #26: 0x8000000000130000 00000000ffffffff +write -q -z 1759k 128k +L2 entry #27: 0x8000000000140000 ffff00000000ffff +L2 entry #28: 0x0000000000000000 ffffffff00000000 +L2 entry #29: 0x0000000000000000 0000ffff00000000 + +### Writing zeroes 4: other tests (backing file: no) ### + +write -q -z 1951k 8k +L2 entry #30: 0x0000000000000000 000f800000000000 +write -q -z 2048k 35k +L2 entry #32: 0x0000000000000000 0003ffff00000000 + +### Zero + unmap 1: allocated clusters (backing file: yes) ### + +Formatting 'TEST_DIR/t.IMGFMT.raw', fmt=raw size=2132992 +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=raw size=2132992 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2132992 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw +write -q -P PATTERN 576k 576k +L2 entry #9: 0x8000000000050000 00000000ffffffff +L2 entry #10: 0x8000000000060000 00000000ffffffff +L2 entry #11: 0x8000000000070000 00000000ffffffff +L2 entry #12: 0x8000000000080000 00000000ffffffff +L2 entry #13: 0x8000000000090000 00000000ffffffff +L2 entry #14: 0x80000000000a0000 00000000ffffffff +L2 entry #15: 0x80000000000b0000 00000000ffffffff +L2 entry #16: 0x80000000000c0000 00000000ffffffff +L2 entry #17: 0x80000000000d0000 00000000ffffffff +write -q -z -u 576k 192k +L2 entry #9: 0x0000000000000000 ffffffff00000000 +L2 entry #10: 0x0000000000000000 ffffffff00000000 +L2 entry #11: 0x0000000000000000 ffffffff00000000 +write -q -z -u 800k 128k +L2 entry #12: 0x8000000000080000 ffff00000000ffff +L2 entry #13: 0x0000000000000000 ffffffff00000000 +L2 entry #14: 0x80000000000a0000 0000ffffffff0000 +write -q -z -u 991k 128k +L2 entry #15: 0x80000000000b0000 ffff00000000ffff +L2 entry #16: 0x0000000000000000 ffffffff00000000 +L2 entry #17: 0x80000000000d0000 00007fffffff8000 + +### Zero + unmap 2: compressed clusters (backing file: yes) ### + +write -q -c -P PATTERN 1152k 64k +L2 entry #18: 0x4000000000050000 0000000000000000 +write -q -c -P PATTERN 1216k 64k +L2 entry #19: 0x4000000000060000 0000000000000000 +write -q -c -P PATTERN 1280k 64k +L2 entry #20: 0x4000000000070000 0000000000000000 +write -q -c -P PATTERN 1344k 64k +L2 entry #21: 0x4000000000090000 0000000000000000 +write -q -c -P PATTERN 1408k 64k +L2 entry #22: 0x40000000000c0000 0000000000000000 +write -q -c -P PATTERN 1472k 64k +L2 entry #23: 0x40000000000e0000 0000000000000000 +write -q -c -P PATTERN 1536k 64k +L2 entry #24: 0x40000000000f0000 0000000000000000 +write -q -c -P PATTERN 1600k 64k +L2 entry #25: 0x4000000000100000 0000000000000000 +write -q -c -P PATTERN 1664k 64k +L2 entry #26: 0x4000000000110000 0000000000000000 +write -q -c -P PATTERN 1728k 64k +L2 entry #27: 0x4000000000120000 0000000000000000 +write -q -c -P PATTERN 1792k 64k +L2 entry #28: 0x4000000000130000 0000000000000000 +write -q -z -u 1152k 192k +L2 entry #18: 0x0000000000000000 ffffffff00000000 +L2 entry #19: 0x0000000000000000 ffffffff00000000 +L2 entry #20: 0x0000000000000000 ffffffff00000000 +write -q -z -u 1376k 128k +L2 entry #21: 0x8000000000050000 00000000ffffffff +L2 entry #22: 0x8000000000060000 00000000ffffffff +L2 entry #23: 0x8000000000070000 00000000ffffffff +write -q -z -u 1567k 129k +L2 entry #24: 0x8000000000090000 00000000ffffffff +L2 entry #25: 0x80000000000e0000 00000000ffffffff +L2 entry #26: 0x80000000000f0000 00000000ffffffff +write -q -z -u 1759k 128k +L2 entry #27: 0x80000000000c0000 ffff00000000ffff +L2 entry #28: 0x0000000000000000 ffffffff00000000 +L2 entry #29: 0x8000000000100000 00007fff00008000 + +### Zero + unmap 1: allocated clusters (backing file: no) ### + +Formatting 'TEST_DIR/t.IMGFMT.raw', fmt=raw size=2132992 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2132992 +write -q -P PATTERN 576k 576k +L2 entry #9: 0x8000000000050000 00000000ffffffff +L2 entry #10: 0x8000000000060000 00000000ffffffff +L2 entry #11: 0x8000000000070000 00000000ffffffff +L2 entry #12: 0x8000000000080000 00000000ffffffff +L2 entry #13: 0x8000000000090000 00000000ffffffff +L2 entry #14: 0x80000000000a0000 00000000ffffffff +L2 entry #15: 0x80000000000b0000 00000000ffffffff +L2 entry #16: 0x80000000000c0000 00000000ffffffff +L2 entry #17: 0x80000000000d0000 00000000ffffffff +write -q -z -u 576k 192k +L2 entry #9: 0x0000000000000000 ffffffff00000000 +L2 entry #10: 0x0000000000000000 ffffffff00000000 +L2 entry #11: 0x0000000000000000 ffffffff00000000 +write -q -z -u 800k 128k +L2 entry #12: 0x8000000000080000 ffff00000000ffff +L2 entry #13: 0x0000000000000000 ffffffff00000000 +L2 entry #14: 0x80000000000a0000 0000ffffffff0000 +write -q -z -u 991k 128k +L2 entry #15: 0x80000000000b0000 ffff00000000ffff +L2 entry #16: 0x0000000000000000 ffffffff00000000 +L2 entry #17: 0x80000000000d0000 00007fffffff8000 + +### Zero + unmap 2: compressed clusters (backing file: no) ### + +write -q -c -P PATTERN 1152k 64k +L2 entry #18: 0x4000000000050000 0000000000000000 +write -q -c -P PATTERN 1216k 64k +L2 entry #19: 0x4000000000060000 0000000000000000 +write -q -c -P PATTERN 1280k 64k +L2 entry #20: 0x4000000000070000 0000000000000000 +write -q -c -P PATTERN 1344k 64k +L2 entry #21: 0x4000000000090000 0000000000000000 +write -q -c -P PATTERN 1408k 64k +L2 entry #22: 0x40000000000c0000 0000000000000000 +write -q -c -P PATTERN 1472k 64k +L2 entry #23: 0x40000000000e0000 0000000000000000 +write -q -c -P PATTERN 1536k 64k +L2 entry #24: 0x40000000000f0000 0000000000000000 +write -q -c -P PATTERN 1600k 64k +L2 entry #25: 0x4000000000100000 0000000000000000 +write -q -c -P PATTERN 1664k 64k +L2 entry #26: 0x4000000000110000 0000000000000000 +write -q -c -P PATTERN 1728k 64k +L2 entry #27: 0x4000000000120000 0000000000000000 +write -q -c -P PATTERN 1792k 64k +L2 entry #28: 0x4000000000130000 0000000000000000 +write -q -z -u 1152k 192k +L2 entry #18: 0x0000000000000000 ffffffff00000000 +L2 entry #19: 0x0000000000000000 ffffffff00000000 +L2 entry #20: 0x0000000000000000 ffffffff00000000 +write -q -z -u 1376k 128k +L2 entry #21: 0x8000000000050000 00000000ffffffff +L2 entry #22: 0x8000000000060000 00000000ffffffff +L2 entry #23: 0x8000000000070000 00000000ffffffff +write -q -z -u 1567k 129k +L2 entry #24: 0x8000000000090000 00000000ffffffff +L2 entry #25: 0x80000000000e0000 00000000ffffffff +L2 entry #26: 0x80000000000f0000 00000000ffffffff +write -q -z -u 1759k 128k +L2 entry #27: 0x80000000000c0000 ffff00000000ffff +L2 entry #28: 0x0000000000000000 ffffffff00000000 +L2 entry #29: 0x0000000000000000 0000ffff00000000 + +### Discarding clusters with non-zero bitmaps (backing file: yes) ### + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw +L2 entry #0: 0x0000000000000000 ffffffff00000000 +L2 entry #1: 0x0000000000000000 ffffffff00000000 +Image resized. +Image resized. +L2 entry #0: 0x0000000000000000 ffffffff00000000 +L2 entry #1: 0x0000000000000000 ffffffff00000000 + +### Discarding clusters with non-zero bitmaps (backing file: no) ### + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x0000000000000000 ffffffff00000000 +L2 entry #1: 0x0000000000000000 ffffffff00000000 +Image resized. +Image resized. +L2 entry #0: 0x0000000000000000 0000ffff00000000 +L2 entry #1: 0x0000000000000000 0000000000000000 + +### Corrupted L2 entries - read test (allocated) ### + +# 'cluster is zero' bit set on the standard cluster descriptor + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x8000000000050001 0000000000000001 +L2 entry #0: 0x8000000000050001 0000000000000001 + +# Both 'subcluster is zero' and 'subcluster is allocated' bits set + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #1: 0x8000000000060000 00000001ffffffff +qcow2: Marking image as corrupt: Invalid cluster entry found (L2 offset: 0x40000, L2 index: 0x1); further corruption events will be suppressed +read failed: Input/output error + +### Corrupted L2 entries - read test (unallocated) ### + +# 'cluster is zero' bit set on the standard cluster descriptor + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x0000000000000001 0000000000000000 +L2 entry #0: 0x0000000000000001 0000000000000000 + +# 'subcluster is allocated' bit set + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x0000000000000000 0000000000000001 +qcow2: Marking image as corrupt: Invalid cluster entry found (L2 offset: 0x40000, L2 index: 0); further corruption events will be suppressed +read failed: Input/output error + +# Both 'subcluster is zero' and 'subcluster is allocated' bits set + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #1: 0x0000000000000000 0000000100000001 +qcow2: Marking image as corrupt: Invalid cluster entry found (L2 offset: 0x40000, L2 index: 0x1); further corruption events will be suppressed +read failed: Input/output error + +### Compressed cluster with subcluster bitmap != 0 - read test ### + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x4000000000050000 0000000180000000 +read 65536/65536 bytes at offset 0 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +L2 entry #0: 0x4000000000050000 0000000180000000 + +### Corrupted L2 entries - write test (allocated) ### + +# 'cluster is zero' bit set on the standard cluster descriptor + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x8000000000050001 0000000000000001 +L2 entry #0: 0x8000000000050001 0000000000000001 + +# Both 'subcluster is zero' and 'subcluster is allocated' bits set + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #1: 0x8000000000060000 00000001ffffffff +qcow2: Marking image as corrupt: Invalid cluster entry found (L2 offset: 0x40000, L2 index: 0x1); further corruption events will be suppressed +write failed: Input/output error + +### Corrupted L2 entries - write test (unallocated) ### + +# 'cluster is zero' bit set on the standard cluster descriptor + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x0000000000000001 0000000000000000 +L2 entry #0: 0x8000000000060000 0000000000000001 + +# 'subcluster is allocated' bit set + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x0000000000000000 0000000000000001 +qcow2: Marking image as corrupt: Invalid cluster entry found (L2 offset: 0x40000, L2 index: 0); further corruption events will be suppressed +write failed: Input/output error + +# Both 'subcluster is zero' and 'subcluster is allocated' bits set + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #1: 0x0000000000000000 0000000100000001 +qcow2: Marking image as corrupt: Invalid cluster entry found (L2 offset: 0x40000, L2 index: 0x1); further corruption events will be suppressed +write failed: Input/output error + +### Compressed cluster with subcluster bitmap != 0 - write test ### + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x4000000000050000 0000000180000000 +wrote 65536/65536 bytes at offset 0 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +L2 entry #0: 0x8000000000060000 00000000ffffffff + +### Image creation options ### + +# cluster_size < 16k +qemu-img: TEST_DIR/t.IMGFMT: Extended L2 entries are only supported with cluster sizes of at least 16384 bytes +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +# backing file and preallocation=metadata +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=raw size=1048576 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=524288 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw preallocation=metadata +Image resized. +read 524288/524288 bytes at offset 0 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 524288/524288 bytes at offset 524288 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Offset Length Mapped to File +0 0x80000 0 TEST_DIR/t.qcow2.base +# backing file and preallocation=falloc +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=524288 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw preallocation=falloc +Image resized. +read 524288/524288 bytes at offset 0 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 524288/524288 bytes at offset 524288 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Offset Length Mapped to File +0 0x80000 0 TEST_DIR/t.qcow2.base +# backing file and preallocation=full +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=524288 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw preallocation=full +Image resized. +read 524288/524288 bytes at offset 0 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 524288/524288 bytes at offset 524288 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Offset Length Mapped to File +0 0x80000 0 TEST_DIR/t.qcow2.base + +### Image resizing with preallocation and backing files ### + +# resize --preallocation=metadata +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=515072 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw +Image resized. +read 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 522240/522240 bytes at offset 515072 +510 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +# resize --preallocation=falloc +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=515072 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw +Image resized. +read 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 522240/522240 bytes at offset 515072 +510 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +# resize --preallocation=full +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=515072 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw +Image resized. +read 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 522240/522240 bytes at offset 515072 +510 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +### Image resizing with preallocation without backing files ### + +# resize --preallocation=metadata +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=515072 +wrote 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Image resized. +read 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 522240/522240 bytes at offset 515072 +510 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +# resize --preallocation=falloc +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=515072 +wrote 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Image resized. +read 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 522240/522240 bytes at offset 515072 +510 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +# resize --preallocation=full +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=515072 +wrote 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Image resized. +read 515072/515072 bytes at offset 0 +503 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 522240/522240 bytes at offset 515072 +510 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +### qemu-img measure ### + +# 512MB, extended_l2=off +required size: 327680 +fully allocated size: 537198592 +# 512MB, extended_l2=on +required size: 393216 +fully allocated size: 537264128 +# 16K clusters, 64GB, extended_l2=off +required size: 42008576 +fully allocated size: 68761485312 +# 16K clusters, 64GB, extended_l2=on +required size: 75579392 +fully allocated size: 68795056128 +# 8k clusters +qemu-img: Extended L2 entries are only supported with cluster sizes of at least 16384 bytes +# 1024 TB +required size: 309285027840 +fully allocated size: 1126209191870464 +# 1025 TB +qemu-img: The image size is too large (try using a larger cluster size) + +### qemu-img amend ### + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +qemu-img: Toggling extended L2 entries is not supported +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +qemu-img: Toggling extended L2 entries is not supported + +### Test copy-on-write on an image with snapshots ### + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 +L2 entry #0: 0x8000000000050000 0000008000042000 +L2 entry #1: 0x8000000000060000 0000008000042000 +L2 entry #2: 0x8000000000070000 0000008000042000 +L2 entry #3: 0x8000000000080000 0000008000042000 +L2 entry #4: 0x8000000000090000 0000008000042000 +L2 entry #5: 0x80000000000a0000 0000008000042000 +L2 entry #6: 0x80000000000b0000 0000008000042000 +L2 entry #7: 0x80000000000c0000 0000008000042000 +L2 entry #8: 0x80000000000d0000 0000008000042000 +L2 entry #9: 0x80000000000e0000 0000008000042000 +L2 entry #0: 0x8000000000120000 000000800007e000 +L2 entry #1: 0x8000000000130000 000000800007fc00 +L2 entry #2: 0x8000000000140000 00000080001fe000 +L2 entry #3: 0x8000000000150000 000000800007e000 +L2 entry #4: 0x8000000000160000 000000000007ff80 +L2 entry #5: 0x8000000000170000 000000000007ffff +L2 entry #6: 0x00000000000b0000 0001808000042000 +L2 entry #7: 0x00000000000c0000 0000208000040000 +L2 entry #8: 0x8000000000180000 000000800007e000 +L2 entry #9: 0x00000000000e0000 000000c000042000 +*** done diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index d886fa0cb3..68f6c2074a 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -284,6 +284,7 @@ 267 rw auto quick snapshot 268 rw auto quick 270 rw backing quick +271 rw auto 272 rw 273 backing quick 274 rw backing