From patchwork Thu Jul 14 13:28:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanna Czenczek X-Patchwork-Id: 12917970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id D5DCCC433EF for ; Thu, 14 Jul 2022 13:41:44 +0000 (UTC) Received: from localhost ([::1]:40850 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oBz67-0001vs-O9 for qemu-devel@archiver.kernel.org; Thu, 14 Jul 2022 09:41:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47546) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oByt6-0006T6-11 for qemu-devel@nongnu.org; Thu, 14 Jul 2022 09:28:16 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:34498) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oByt3-00029n-1e for qemu-devel@nongnu.org; Thu, 14 Jul 2022 09:28:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1657805288; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wY4rtftq1/efT1Nt3ZpHN1HlDiZWDZ05FAsAoGpNtIk=; b=AIEXAf0j/yTFAuXWfdKrHPC2SMAhKaoN4KlwuadrFQ10i6PUvTFxvCdIOj+M2Vwz6qCIDA nCp/6pDDcd3NYliT68s405N5t/qXG1/Wehwppl+E1fOK4AEc3uFopDZyuY/EmN95YgSBjC vo9l5LulG3Km1dpyHbPsovXlYMIBum8= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-538-w5ThWjHbMKKgAGr6XytElQ-1; Thu, 14 Jul 2022 09:28:05 -0400 X-MC-Unique: w5ThWjHbMKKgAGr6XytElQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 47B103C01D96; Thu, 14 Jul 2022 13:28:05 +0000 (UTC) Received: from localhost (unknown [10.39.192.157]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F35D81121314; Thu, 14 Jul 2022 13:28:04 +0000 (UTC) From: Hanna Reitz To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, Hanna Reitz , Vladimir Sementsov-Ogievskiy , Stefan Hajnoczi , "Denis V . Lunev" , Kevin Wolf Subject: [PATCH 1/2] block/parallels: Fix buffer-based write call Date: Thu, 14 Jul 2022 15:28:00 +0200 Message-Id: <20220714132801.72464-2-hreitz@redhat.com> In-Reply-To: <20220714132801.72464-1-hreitz@redhat.com> References: <20220714132801.72464-1-hreitz@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 Received-SPF: pass client-ip=170.10.133.124; envelope-from=hreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Commit a4072543ccdddbd241d5962d9237b8b41fd006bf has changed the I/O here from working on a local one-element I/O vector to just using the buffer directly (using the bdrv_co_pread()/bdrv_co_pwrite() helper functions introduced shortly before). However, it only changed the bdrv_co_preadv() call to bdrv_co_pread() - the subsequent bdrv_co_pwritev() call stayed this way, and so still expects a QEMUIOVector pointer instead of a plain buffer. We must change that to be a bdrv_co_pwrite() call. Fixes: a4072543ccdddbd241d5962d ("block/parallels: use buffer-based io") Signed-off-by: Hanna Reitz Reviewed-by: Denis V. Lunev Reviewed-by: Vladimir Sementsov-Ogievskiy --- block/parallels.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/parallels.c b/block/parallels.c index 8b235b9505..a229c06f25 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -241,8 +241,8 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num, return ret; } - ret = bdrv_co_pwritev(bs->file, s->data_end * BDRV_SECTOR_SIZE, - nb_cow_bytes, buf, 0); + ret = bdrv_co_pwrite(bs->file, s->data_end * BDRV_SECTOR_SIZE, + nb_cow_bytes, buf, 0); qemu_vfree(buf); if (ret < 0) { return ret; From patchwork Thu Jul 14 13:28:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanna Czenczek X-Patchwork-Id: 12917969 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5C599C433EF for ; Thu, 14 Jul 2022 13:40:04 +0000 (UTC) Received: from localhost ([::1]:37102 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oBz4V-0007jA-Cc for qemu-devel@archiver.kernel.org; Thu, 14 Jul 2022 09:40:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47604) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oByt7-0006Xk-Co for qemu-devel@nongnu.org; Thu, 14 Jul 2022 09:28:17 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:48917) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oByt5-0002Ba-2j for qemu-devel@nongnu.org; Thu, 14 Jul 2022 09:28:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1657805294; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DmjEeHwaCQ2353LqfByqBwE9orihxYTBgt9bplA4baI=; b=WBzhsqM2NOLS43gtDAjSuQkm9eS3cXV5oCEp/Ld/quYt+IZNz3JDDgEnr9DmHsdxWPNaxz ybWDAAWZ8kSmOWGVFYLfBLCKrf8iJKg943wdmaVm5LZHnzkOdg7V2eG8nMcvS8Cu0aJnJK X9HfBvJAJW9ECHzFHNHEHGsBIUZhAnY= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-58-_CVuJObBOUmOIKZLWz5HBg-1; Thu, 14 Jul 2022 09:28:07 -0400 X-MC-Unique: _CVuJObBOUmOIKZLWz5HBg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id DAE5B80A0B7; Thu, 14 Jul 2022 13:28:06 +0000 (UTC) Received: from localhost (unknown [10.39.192.157]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 915041121314; Thu, 14 Jul 2022 13:28:06 +0000 (UTC) From: Hanna Reitz To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, Hanna Reitz , Vladimir Sementsov-Ogievskiy , Stefan Hajnoczi , "Denis V . Lunev" , Kevin Wolf Subject: [PATCH 2/2] iotests/131: Add parallels regression test Date: Thu, 14 Jul 2022 15:28:01 +0200 Message-Id: <20220714132801.72464-3-hreitz@redhat.com> In-Reply-To: <20220714132801.72464-1-hreitz@redhat.com> References: <20220714132801.72464-1-hreitz@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 Received-SPF: pass client-ip=170.10.133.124; envelope-from=hreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Test an allocating write to a parallels image that has a backing node. Before HEAD^, doing so used to give me a failed assertion (when the backing node contains only `42` bytes; the results varies with the value chosen, for `0` bytes, for example, all I get is EIO). Signed-off-by: Hanna Reitz Reviewed-by: Denis V. Lunev Reviewed-by: Vladimir Sementsov-Ogievskiy --- tests/qemu-iotests/131 | 35 ++++++++++++++++++++++++++++++++++- tests/qemu-iotests/131.out | 13 +++++++++++++ 2 files changed, 47 insertions(+), 1 deletion(-) diff --git a/tests/qemu-iotests/131 b/tests/qemu-iotests/131 index d7456cae5b..a847692b4c 100755 --- a/tests/qemu-iotests/131 +++ b/tests/qemu-iotests/131 @@ -43,7 +43,7 @@ _supported_os Linux inuse_offset=$((0x2c)) -size=64M +size=$((64 * 1024 * 1024)) CLUSTER_SIZE=64k IMGFMT=parallels _make_test_img $size @@ -70,6 +70,39 @@ _check_test_img _check_test_img -r all { $QEMU_IO -c "read -P 0x11 64k 64k" "$TEST_IMG"; } 2>&1 | _filter_qemu_io | _filter_testdir +echo "== allocate with backing ==" +# Verify that allocating clusters works fine even when there is a backing image. +# Regression test for a bug where we would pass a buffer read from the backing +# node as a QEMUIOVector object, which could cause anything from I/O errors over +# assertion failures to invalid reads from memory. + +# Clear image +_make_test_img $size +# Create base image +TEST_IMG="$TEST_IMG.base" _make_test_img $size + +# Write some data to the base image (which would trigger an assertion failure if +# interpreted as a QEMUIOVector) +$QEMU_IO -c 'write -P 42 0 64k' "$TEST_IMG.base" | _filter_qemu_io + +# Parallels does not seem to support storing a backing filename in the image +# itself, so we need to build our backing chain on the command line +imgopts="driver=$IMGFMT,file.driver=$IMGPROTO,file.filename=$TEST_IMG" +imgopts+=",backing.driver=$IMGFMT" +imgopts+=",backing.file.driver=$IMGPROTO,backing.file.filename=$TEST_IMG.base" + +# Cause allocation in the top image +QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT \ + $QEMU_IO --image-opts "$imgopts" -c 'write -P 1 0 64' | _filter_qemu_io + +# Verify +QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT \ + $QEMU_IO --image-opts "$imgopts" \ + -c 'read -P 1 0 64' \ + -c "read -P 42 64 $((64 * 1024 - 64))" \ + -c "read -P 0 64k $((size - 64 * 1024))" \ + | _filter_qemu_io + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/131.out b/tests/qemu-iotests/131.out index 70da03dee5..de5ef7a8f5 100644 --- a/tests/qemu-iotests/131.out +++ b/tests/qemu-iotests/131.out @@ -37,4 +37,17 @@ Double checking the fixed image now... No errors were found on the image. read 65536/65536 bytes at offset 65536 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +== allocate with backing == +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=67108864 +wrote 65536/65536 bytes at offset 0 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 64/64 bytes at offset 0 +64 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 64/64 bytes at offset 0 +64 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 65472/65472 bytes at offset 64 +63.938 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 67043328/67043328 bytes at offset 65536 +63.938 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) *** done