From patchwork Tue Oct 15 18:20:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 1177284 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com 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 ozlabs.org (Postfix) with ESMTPS id 46t3gB2y7Fz9sPV for ; Wed, 16 Oct 2019 05:22:13 +1100 (AEDT) Received: from localhost ([::1]:55988 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRSU-0006IZ-Mz for incoming@patchwork.ozlabs.org; Tue, 15 Oct 2019 14:22:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59711) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRR7-0005rL-HT for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iKRR5-0001Tf-Id for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:45 -0400 Received: from relay.sw.ru ([185.231.240.75]:35010) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iKRR5-0001RF-B4; Tue, 15 Oct 2019 14:20:43 -0400 Received: from [172.16.25.136] (helo=dhcp-172-16-25-136.sw.ru) by relay.sw.ru with esmtp (Exim 4.92.2) (envelope-from ) id 1iKRQy-0003ry-Im; Tue, 15 Oct 2019 21:20:36 +0300 From: Andrey Shinkevich To: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [PATCH v3 1/5] qcow2: Allow writing compressed data of multiple clusters Date: Tue, 15 Oct 2019 21:20:21 +0300 Message-Id: <1571163625-642312-2-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 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: kwolf@redhat.com, fam@euphon.net, vsementsov@virtuozzo.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" QEMU currently supports writing compressed data of the size equal to one cluster. This patch allows writing QCOW2 compressed data that exceed one cluster. Now, we split buffered data into separate clusters and write them compressed using the existing functionality. To inform the block layer about writing all the data compressed, we introduce the 'compress' command line option. Based on that option, the written data will be aligned by the cluster size at the generic layer. Suggested-by: Pavel Butsykin Suggested-by: Vladimir Sementsov-Ogievskiy Suggested-by: Roman Kagan Signed-off-by: Andrey Shinkevich --- block.c | 12 +++++- block/io.c | 2 +- block/qcow2.c | 106 ++++++++++++++++++++++++++++++++++------------ block/qcow2.h | 1 + blockdev.c | 4 ++ include/block/block.h | 1 + include/block/block_int.h | 2 + qapi/block-core.json | 6 ++- qemu-options.hx | 6 ++- 9 files changed, 108 insertions(+), 32 deletions(-) diff --git a/block.c b/block.c index 5944124..4cfbea2 100644 --- a/block.c +++ b/block.c @@ -1418,6 +1418,11 @@ QemuOptsList bdrv_runtime_opts = { .type = QEMU_OPT_BOOL, .help = "always accept other writers (default: off)", }, + { + .name = BDRV_OPT_COMPRESS, + .type = QEMU_OPT_BOOL, + .help = "compress all writes to the image (default: off)", + }, { /* end of list */ } }, }; @@ -2983,6 +2988,11 @@ static BlockDriverState *bdrv_open_inherit(const char *filename, flags &= ~BDRV_O_RDWR; } + if (!g_strcmp0(qdict_get_try_str(options, BDRV_OPT_COMPRESS), "on") || + qdict_get_try_bool(options, BDRV_OPT_COMPRESS, false)) { + bs->all_write_compressed = true; + } + if (flags & BDRV_O_SNAPSHOT) { snapshot_options = qdict_new(); bdrv_temp_snapshot_options(&snapshot_flags, snapshot_options, @@ -3208,7 +3218,7 @@ static int bdrv_reset_options_allowed(BlockDriverState *bs, * in bdrv_reopen_prepare() so they can be left out of @new_opts */ const char *const common_options[] = { "node-name", "discard", "cache.direct", "cache.no-flush", - "read-only", "auto-read-only", "detect-zeroes", NULL + "read-only", "auto-read-only", "detect-zeroes", "compress", NULL }; for (e = qdict_first(bs->options); e; e = qdict_next(bs->options, e)) { diff --git a/block/io.c b/block/io.c index f8c3596..6a5509c 100644 --- a/block/io.c +++ b/block/io.c @@ -1922,7 +1922,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BdrvChild *child, } else if (flags & BDRV_REQ_ZERO_WRITE) { bdrv_debug_event(bs, BLKDBG_PWRITEV_ZERO); ret = bdrv_co_do_pwrite_zeroes(bs, offset, bytes, flags); - } else if (flags & BDRV_REQ_WRITE_COMPRESSED) { + } else if (flags & BDRV_REQ_WRITE_COMPRESSED || bs->all_write_compressed) { ret = bdrv_driver_pwritev_compressed(bs, offset, bytes, qiov, qiov_offset); } else if (bytes <= max_transfer) { diff --git a/block/qcow2.c b/block/qcow2.c index 7961c05..9a85d73 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1787,6 +1787,10 @@ static void qcow2_refresh_limits(BlockDriverState *bs, Error **errp) /* Encryption works on a sector granularity */ bs->bl.request_alignment = qcrypto_block_get_sector_size(s->crypto); } + if (bs->all_write_compressed) { + bs->bl.request_alignment = MAX(bs->bl.request_alignment, + s->cluster_size); + } bs->bl.pwrite_zeroes_alignment = s->cluster_size; bs->bl.pdiscard_alignment = s->cluster_size; } @@ -4152,10 +4156,8 @@ fail: return ret; } -/* XXX: put compressed sectors first, then all the cluster aligned - tables to avoid losing bytes in alignment */ static coroutine_fn int -qcow2_co_pwritev_compressed_part(BlockDriverState *bs, +qcow2_co_pwritev_compressed_task(BlockDriverState *bs, uint64_t offset, uint64_t bytes, QEMUIOVector *qiov, size_t qiov_offset) { @@ -4165,32 +4167,11 @@ qcow2_co_pwritev_compressed_part(BlockDriverState *bs, uint8_t *buf, *out_buf; uint64_t cluster_offset; - if (has_data_file(bs)) { - return -ENOTSUP; - } - - if (bytes == 0) { - /* align end of file to a sector boundary to ease reading with - sector based I/Os */ - int64_t len = bdrv_getlength(bs->file->bs); - if (len < 0) { - return len; - } - return bdrv_co_truncate(bs->file, len, PREALLOC_MODE_OFF, NULL); - } - - if (offset_into_cluster(s, offset)) { - return -EINVAL; - } + assert(bytes == s->cluster_size || (bytes < s->cluster_size && + (offset + bytes == bs->total_sectors << BDRV_SECTOR_BITS))); buf = qemu_blockalign(bs, s->cluster_size); - if (bytes != s->cluster_size) { - if (bytes > s->cluster_size || - offset + bytes != bs->total_sectors << BDRV_SECTOR_BITS) - { - qemu_vfree(buf); - return -EINVAL; - } + if (bytes < s->cluster_size) { /* Zero-pad last write if image size is not cluster aligned */ memset(buf + bytes, 0, s->cluster_size - bytes); } @@ -4239,6 +4220,77 @@ fail: return ret; } +static coroutine_fn int qcow2_co_pwritev_compressed_task_entry(AioTask *task) +{ + Qcow2AioTask *t = container_of(task, Qcow2AioTask, task); + + assert(!t->cluster_type && !t->l2meta); + + return qcow2_co_pwritev_compressed_task(t->bs, t->offset, t->bytes, t->qiov, + t->qiov_offset); +} + +/* + * XXX: put compressed sectors first, then all the cluster aligned + tables to avoid losing bytes in alignment + */ +static coroutine_fn int +qcow2_co_pwritev_compressed_part(BlockDriverState *bs, + uint64_t offset, uint64_t bytes, + QEMUIOVector *qiov, size_t qiov_offset) +{ + BDRVQcow2State *s = bs->opaque; + AioTaskPool *aio = NULL; + int ret; + + if (has_data_file(bs)) { + return -ENOTSUP; + } + + if (bytes == 0) { + /* + * align end of file to a sector boundary to ease reading with + * sector based I/Os + */ + int64_t len = bdrv_getlength(bs->file->bs); + if (len < 0) { + return len; + } + return bdrv_co_truncate(bs->file, len, PREALLOC_MODE_OFF, NULL); + } + + if (offset_into_cluster(s, offset)) { + return -EINVAL; + } + + while (bytes && aio_task_pool_status(aio) == 0) { + uint32_t chunk_size = MIN(bytes, s->cluster_size); + + if (!aio && chunk_size != bytes) { + aio = aio_task_pool_new(QCOW2_MAX_WORKERS); + } + + ret = qcow2_add_task(bs, aio, qcow2_co_pwritev_compressed_task_entry, + 0, 0, offset, chunk_size, qiov, qiov_offset, NULL); + if (ret < 0) { + break; + } + qiov_offset += chunk_size; + offset += chunk_size; + bytes -= chunk_size; + } + + if (aio) { + aio_task_pool_wait_all(aio); + if (ret == 0) { + ret = aio_task_pool_status(aio); + } + g_free(aio); + } + + return ret; +} + static int coroutine_fn qcow2_co_preadv_compressed(BlockDriverState *bs, uint64_t file_cluster_offset, diff --git a/block/qcow2.h b/block/qcow2.h index f51f478..2d264c6 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -120,6 +120,7 @@ #define QCOW2_OPT_L2_CACHE_ENTRY_SIZE "l2-cache-entry-size" #define QCOW2_OPT_REFCOUNT_CACHE_SIZE "refcount-cache-size" #define QCOW2_OPT_CACHE_CLEAN_INTERVAL "cache-clean-interval" +#define QCOW2_OPT_COMPRESS "compress" typedef struct QCowHeader { uint32_t magic; diff --git a/blockdev.c b/blockdev.c index fbef684..2103730 100644 --- a/blockdev.c +++ b/blockdev.c @@ -4682,6 +4682,10 @@ QemuOptsList qemu_common_drive_opts = { .name = BDRV_OPT_READ_ONLY, .type = QEMU_OPT_BOOL, .help = "open drive file as read-only", + },{ + .name = BDRV_OPT_COMPRESS, + .type = QEMU_OPT_BOOL, + .help = "compress all writes to image", }, THROTTLE_OPTS, diff --git a/include/block/block.h b/include/block/block.h index 37c9de7..2980293 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -139,6 +139,7 @@ typedef struct HDGeometry { #define BDRV_OPT_AUTO_READ_ONLY "auto-read-only" #define BDRV_OPT_DISCARD "discard" #define BDRV_OPT_FORCE_SHARE "force-share" +#define BDRV_OPT_COMPRESS "compress" #define BDRV_SECTOR_BITS 9 diff --git a/include/block/block_int.h b/include/block/block_int.h index 0422acd..6cb6604 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -922,6 +922,8 @@ struct BlockDriverState { /* BdrvChild links to this node may never be frozen */ bool never_freeze; + /* Compress all writes to the image */ + bool all_write_compressed; }; struct BlockBackendRootState { diff --git a/qapi/block-core.json b/qapi/block-core.json index e6edd64..14d8ce2 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -3949,6 +3949,9 @@ # @force-share: force share all permission on added nodes. # Requires read-only=true. (Since 2.10) # +# @compress: compress all writes to the image (Since 4.2) +# (default: false) +# # Remaining options are determined by the block driver. # # Since: 2.9 @@ -3961,7 +3964,8 @@ '*read-only': 'bool', '*auto-read-only': 'bool', '*force-share': 'bool', - '*detect-zeroes': 'BlockdevDetectZeroesOptions' }, + '*detect-zeroes': 'BlockdevDetectZeroesOptions', + '*compress': 'bool' }, 'discriminator': 'driver', 'data': { 'blkdebug': 'BlockdevOptionsBlkdebug', diff --git a/qemu-options.hx b/qemu-options.hx index 2a04ca6..0b0bfb9 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -850,7 +850,7 @@ DEF("blockdev", HAS_ARG, QEMU_OPTION_blockdev, "-blockdev [driver=]driver[,node-name=N][,discard=ignore|unmap]\n" " [,cache.direct=on|off][,cache.no-flush=on|off]\n" " [,read-only=on|off][,detect-zeroes=on|off|unmap]\n" - " [,driver specific parameters...]\n" + " [,compress=on|off][,driver specific parameters...]\n" " configure a block backend\n", QEMU_ARCH_ALL) STEXI @item -blockdev @var{option}[,@var{option}[,@var{option}[,...]]] @@ -905,6 +905,8 @@ discard requests. conversion of plain zero writes by the OS to driver specific optimized zero write commands. You may even choose "unmap" if @var{discard} is set to "unmap" to allow a zero write to be converted to an @code{unmap} operation. +@item compress +Compress all writes to the image. @end table @item Driver-specific options for @code{file} @@ -1026,7 +1028,7 @@ DEF("drive", HAS_ARG, QEMU_OPTION_drive, " [,cache=writethrough|writeback|none|directsync|unsafe][,format=f]\n" " [,snapshot=on|off][,rerror=ignore|stop|report]\n" " [,werror=ignore|stop|report|enospc][,id=name][,aio=threads|native]\n" - " [,readonly=on|off][,copy-on-read=on|off]\n" + " [,readonly=on|off][,copy-on-read=on|off][,compress=on|off]\n" " [,discard=ignore|unmap][,detect-zeroes=on|off|unmap]\n" " [[,bps=b]|[[,bps_rd=r][,bps_wr=w]]]\n" " [[,iops=i]|[[,iops_rd=r][,iops_wr=w]]]\n" From patchwork Tue Oct 15 18:20:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 1177287 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com 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 ozlabs.org (Postfix) with ESMTPS id 46t3kq6psfz9sNx for ; Wed, 16 Oct 2019 05:25:23 +1100 (AEDT) Received: from localhost ([::1]:56052 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRVZ-0001zl-HG for incoming@patchwork.ozlabs.org; Tue, 15 Oct 2019 14:25:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59692) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRR6-0005q9-U2 for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iKRR5-0001Tm-Jd for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:44 -0400 Received: from relay.sw.ru ([185.231.240.75]:35016) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iKRR5-0001RK-Bx; Tue, 15 Oct 2019 14:20:43 -0400 Received: from [172.16.25.136] (helo=dhcp-172-16-25-136.sw.ru) by relay.sw.ru with esmtp (Exim 4.92.2) (envelope-from ) id 1iKRQy-0003ry-Pg; Tue, 15 Oct 2019 21:20:36 +0300 From: Andrey Shinkevich To: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [PATCH v3 2/5] tests/qemu-iotests: add case to write compressed data of multiple clusters Date: Tue, 15 Oct 2019 21:20:22 +0300 Message-Id: <1571163625-642312-3-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 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: kwolf@redhat.com, fam@euphon.net, vsementsov@virtuozzo.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Add the test case to the iotest #214 that checks possibility of writing compressed data of more than one cluster size. Signed-off-by: Andrey Shinkevich --- tests/qemu-iotests/214 | 35 +++++++++++++++++++++++++++++++++++ tests/qemu-iotests/214.out | 15 +++++++++++++++ 2 files changed, 50 insertions(+) diff --git a/tests/qemu-iotests/214 b/tests/qemu-iotests/214 index 21ec8a2..0003dc2 100755 --- a/tests/qemu-iotests/214 +++ b/tests/qemu-iotests/214 @@ -89,6 +89,41 @@ _check_test_img -r all $QEMU_IO -c "read -P 0x11 0 4M" "$TEST_IMG" 2>&1 | _filter_qemu_io | _filter_testdir $QEMU_IO -c "read -P 0x22 4M 4M" "$TEST_IMG" 2>&1 | _filter_qemu_io | _filter_testdir +echo +echo "=== Write compressed data of multiple clusters ===" +echo +cluster_size=0x10000 +_make_test_img 2M -o cluster_size=$cluster_size + +echo "Uncompressed data:" +let data_size="8 * $cluster_size" +$QEMU_IO -c "write -P 0xaa 0 $data_size" "$TEST_IMG" \ + 2>&1 | _filter_qemu_io | _filter_testdir +$QEMU_IMG info "$TEST_IMG" | sed -n '/disk size:/ s/^ *//p' + +_make_test_img 2M -o cluster_size=$cluster_size +let data_size="3 * $cluster_size + ($cluster_size >> 1)" +# Set compress=on. That will align the written data +# by the cluster size and will write them compressed. +QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT \ +$QEMU_IO -c "write -P 0xbb 0 $data_size" --image-opts \ + driver=$IMGFMT,compress=on,file.filename=$TEST_IMG \ + 2>&1 | _filter_qemu_io | _filter_testdir + +let offset="4 * $cluster_size" +QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT \ +$QEMU_IO -c "write -P 0xcc $offset $data_size" "json:{\ + 'driver': '$IMGFMT', + 'file': { + 'driver': 'file', + 'filename': '$TEST_IMG' + }, + 'compress': true +}" | _filter_qemu_io | _filter_testdir + +echo "After the multiple cluster data have been written compressed," +$QEMU_IMG info "$TEST_IMG" | sed -n '/disk size:/ s/^ *//p' + # success, all done echo '*** done' rm -f $seq.full diff --git a/tests/qemu-iotests/214.out b/tests/qemu-iotests/214.out index 0fcd8dc..09a2e9a 100644 --- a/tests/qemu-iotests/214.out +++ b/tests/qemu-iotests/214.out @@ -32,4 +32,19 @@ read 4194304/4194304 bytes at offset 0 4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 4194304/4194304 bytes at offset 4194304 4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +=== Write compressed data of multiple clusters === + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2097152 +Uncompressed data: +wrote 524288/524288 bytes at offset 0 +512 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +disk size: 772 KiB +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2097152 +wrote 229376/229376 bytes at offset 0 +224 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 229376/229376 bytes at offset 262144 +224 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +After the multiple cluster data have been written compressed, +disk size: 268 KiB *** done From patchwork Tue Oct 15 18:20:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 1177286 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com 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 ozlabs.org (Postfix) with ESMTPS id 46t3kG1WnVz9sNx for ; Wed, 16 Oct 2019 05:24:54 +1100 (AEDT) Received: from localhost ([::1]:56046 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRV4-0001Wt-4s for incoming@patchwork.ozlabs.org; Tue, 15 Oct 2019 14:24:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59675) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRR6-0005ok-9e for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iKRR4-0001TD-Ub for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:44 -0400 Received: from relay.sw.ru ([185.231.240.75]:35008) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iKRR4-0001RJ-Ma; Tue, 15 Oct 2019 14:20:42 -0400 Received: from [172.16.25.136] (helo=dhcp-172-16-25-136.sw.ru) by relay.sw.ru with esmtp (Exim 4.92.2) (envelope-from ) id 1iKRQz-0003ry-09; Tue, 15 Oct 2019 21:20:37 +0300 From: Andrey Shinkevich To: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [PATCH v3 3/5] block: support compressed write for copy-on-read Date: Tue, 15 Oct 2019 21:20:23 +0300 Message-Id: <1571163625-642312-4-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 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: kwolf@redhat.com, fam@euphon.net, vsementsov@virtuozzo.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Support the data compression during block-stream job over a backup backing chain implemented in the following patch 'block-stream: add compress option'. Signed-off-by: Anton Nefedov Signed-off-by: Denis V. Lunev Signed-off-by: Andrey Shinkevich --- block/io.c | 21 ++++++++++++++++----- block/trace-events | 2 +- 2 files changed, 17 insertions(+), 6 deletions(-) diff --git a/block/io.c b/block/io.c index 6a5509c..fc7f157 100644 --- a/block/io.c +++ b/block/io.c @@ -1264,12 +1264,13 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BdrvChild *child, * allocating cluster in the image file. Note that this value may exceed * BDRV_REQUEST_MAX_BYTES (even when the original read did not), which * is one reason we loop rather than doing it all at once. + * Also, this is crucial for compressed copy-on-read. */ bdrv_round_to_clusters(bs, offset, bytes, &cluster_offset, &cluster_bytes); skip_bytes = offset - cluster_offset; trace_bdrv_co_do_copy_on_readv(bs, offset, bytes, - cluster_offset, cluster_bytes); + cluster_offset, cluster_bytes, flags); while (cluster_bytes) { int64_t pnum; @@ -1328,9 +1329,15 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BdrvChild *child, /* This does not change the data on the disk, it is not * necessary to flush even in cache=writethrough mode. */ - ret = bdrv_driver_pwritev(bs, cluster_offset, pnum, - &local_qiov, 0, - BDRV_REQ_WRITE_UNCHANGED); + if (flags & BDRV_REQ_WRITE_COMPRESSED) { + ret = bdrv_driver_pwritev_compressed(bs, cluster_offset, + pnum, &local_qiov, + qiov_offset); + } else { + ret = bdrv_driver_pwritev(bs, cluster_offset, pnum, + &local_qiov, 0, + BDRV_REQ_WRITE_UNCHANGED); + } } if (ret < 0) { @@ -1396,7 +1403,11 @@ static int coroutine_fn bdrv_aligned_preadv(BdrvChild *child, * to pass through to drivers. For now, there aren't any * passthrough flags. */ assert(!(flags & ~(BDRV_REQ_NO_SERIALISING | BDRV_REQ_COPY_ON_READ | - BDRV_REQ_PREFETCH))); + BDRV_REQ_PREFETCH | BDRV_REQ_WRITE_COMPRESSED))); + + /* write compressed only makes sense with copy on read */ + assert(!(flags & BDRV_REQ_WRITE_COMPRESSED) || + (flags & BDRV_REQ_COPY_ON_READ)); /* Handle Copy on Read and associated serialisation */ if (flags & BDRV_REQ_COPY_ON_READ) { diff --git a/block/trace-events b/block/trace-events index 3aa27e6..f444548 100644 --- a/block/trace-events +++ b/block/trace-events @@ -14,7 +14,7 @@ blk_root_detach(void *child, void *blk, void *bs) "child %p blk %p bs %p" bdrv_co_preadv(void *bs, int64_t offset, int64_t nbytes, unsigned int flags) "bs %p offset %"PRId64" nbytes %"PRId64" flags 0x%x" bdrv_co_pwritev(void *bs, int64_t offset, int64_t nbytes, unsigned int flags) "bs %p offset %"PRId64" nbytes %"PRId64" flags 0x%x" bdrv_co_pwrite_zeroes(void *bs, int64_t offset, int count, int flags) "bs %p offset %"PRId64" count %d flags 0x%x" -bdrv_co_do_copy_on_readv(void *bs, int64_t offset, unsigned int bytes, int64_t cluster_offset, int64_t cluster_bytes) "bs %p offset %"PRId64" bytes %u cluster_offset %"PRId64" cluster_bytes %"PRId64 +bdrv_co_do_copy_on_readv(void *bs, int64_t offset, unsigned int bytes, int64_t cluster_offset, int64_t cluster_bytes, int flags) "bs %p offset %"PRId64" bytes %u cluster_offset %"PRId64" cluster_bytes %"PRId64" flags 0x%x" bdrv_co_copy_range_from(void *src, uint64_t src_offset, void *dst, uint64_t dst_offset, uint64_t bytes, int read_flags, int write_flags) "src %p offset %"PRIu64" dst %p offset %"PRIu64" bytes %"PRIu64" rw flags 0x%x 0x%x" bdrv_co_copy_range_to(void *src, uint64_t src_offset, void *dst, uint64_t dst_offset, uint64_t bytes, int read_flags, int write_flags) "src %p offset %"PRIu64" dst %p offset %"PRIu64" bytes %"PRIu64" rw flags 0x%x 0x%x" From patchwork Tue Oct 15 18:20:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 1177283 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com 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 ozlabs.org (Postfix) with ESMTPS id 46t3gB2wJxz9sP7 for ; Wed, 16 Oct 2019 05:22:13 +1100 (AEDT) Received: from localhost ([::1]:55980 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRST-0006Dw-50 for incoming@patchwork.ozlabs.org; Tue, 15 Oct 2019 14:22:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59671) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRR6-0005oM-6G for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iKRR4-0001Su-T0 for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:43 -0400 Received: from relay.sw.ru ([185.231.240.75]:35020) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iKRR4-0001RH-LQ; Tue, 15 Oct 2019 14:20:42 -0400 Received: from [172.16.25.136] (helo=dhcp-172-16-25-136.sw.ru) by relay.sw.ru with esmtp (Exim 4.92.2) (envelope-from ) id 1iKRQz-0003ry-6u; Tue, 15 Oct 2019 21:20:37 +0300 From: Andrey Shinkevich To: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [PATCH v3 4/5] block-stream: add compress option Date: Tue, 15 Oct 2019 21:20:24 +0300 Message-Id: <1571163625-642312-5-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 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: kwolf@redhat.com, fam@euphon.net, vsementsov@virtuozzo.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Allow data compression during block-stream job for backup backing chain. Signed-off-by: Andrey Shinkevich --- block/stream.c | 10 ++++++++-- blockdev.c | 12 +++++++++++- 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/block/stream.c b/block/stream.c index 5562ccb..25f9324 100644 --- a/block/stream.c +++ b/block/stream.c @@ -41,10 +41,16 @@ typedef struct StreamBlockJob { static int coroutine_fn stream_populate(BlockBackend *blk, int64_t offset, uint64_t bytes) { + BlockDriverState *bs = blk_bs(blk); + int flags = BDRV_REQ_COPY_ON_READ | BDRV_REQ_PREFETCH; + + if (bs->all_write_compressed) { + flags |= BDRV_REQ_WRITE_COMPRESSED; + } + assert(bytes < SIZE_MAX); - return blk_co_preadv(blk, offset, bytes, NULL, - BDRV_REQ_COPY_ON_READ | BDRV_REQ_PREFETCH); + return blk_co_preadv(blk, offset, bytes, NULL, flags); } static void stream_abort(Job *job) diff --git a/blockdev.c b/blockdev.c index 2103730..fd824da 100644 --- a/blockdev.c +++ b/blockdev.c @@ -471,7 +471,7 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, int bdrv_flags = 0; int on_read_error, on_write_error; bool account_invalid, account_failed; - bool writethrough, read_only; + bool writethrough, read_only, compress; BlockBackend *blk; BlockDriverState *bs; ThrottleConfig cfg; @@ -570,6 +570,7 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, } read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); + compress = qemu_opt_get_bool(opts, BDRV_OPT_COMPRESS, false); /* init */ if ((!file || !*file) && !qdict_size(bs_opts)) { @@ -595,6 +596,8 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); qdict_set_default_str(bs_opts, BDRV_OPT_AUTO_READ_ONLY, "on"); + qdict_set_default_str(bs_opts, BDRV_OPT_COMPRESS, + compress ? "on" : "off"); assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); if (runstate_check(RUN_STATE_INMIGRATE)) { @@ -3308,6 +3311,13 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device, goto out; } + if (bs->all_write_compressed && + bs->drv->bdrv_co_pwritev_compressed_part == NULL) { + error_setg(errp, "Compression is not supported for this drive %s", + bdrv_get_device_name(bs)); + goto out; + } + /* backing_file string overrides base bs filename */ base_name = has_backing_file ? backing_file : base_name; From patchwork Tue Oct 15 18:20:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 1177285 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com 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 ozlabs.org (Postfix) with ESMTPS id 46t3gQ2RtSz9sPV for ; Wed, 16 Oct 2019 05:22:26 +1100 (AEDT) Received: from localhost ([::1]:56016 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRSh-0006kd-RV for incoming@patchwork.ozlabs.org; Tue, 15 Oct 2019 14:22:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59676) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iKRR6-0005ol-9K for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iKRR4-0001T0-Tg for qemu-devel@nongnu.org; Tue, 15 Oct 2019 14:20:44 -0400 Received: from relay.sw.ru ([185.231.240.75]:35002) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iKRR4-0001RI-LK; Tue, 15 Oct 2019 14:20:42 -0400 Received: from [172.16.25.136] (helo=dhcp-172-16-25-136.sw.ru) by relay.sw.ru with esmtp (Exim 4.92.2) (envelope-from ) id 1iKRQz-0003ry-Co; Tue, 15 Oct 2019 21:20:37 +0300 From: Andrey Shinkevich To: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [PATCH v3 5/5] tests/qemu-iotests: add case for block-stream compress Date: Tue, 15 Oct 2019 21:20:25 +0300 Message-Id: <1571163625-642312-6-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1571163625-642312-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 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: kwolf@redhat.com, fam@euphon.net, vsementsov@virtuozzo.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Add a case to the iotest #030 that tests the 'compress' option for a block-stream job. Signed-off-by: Andrey Shinkevich --- tests/qemu-iotests/030 | 51 +++++++++++++++++++++++++++++++++++++++++++++- tests/qemu-iotests/030.out | 4 ++-- 2 files changed, 52 insertions(+), 3 deletions(-) diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030 index f3766f2..f0f0e26 100755 --- a/tests/qemu-iotests/030 +++ b/tests/qemu-iotests/030 @@ -21,7 +21,8 @@ import time import os import iotests -from iotests import qemu_img, qemu_io +from iotests import qemu_img, qemu_io, qemu_img_pipe +import json backing_img = os.path.join(iotests.test_dir, 'backing.img') mid_img = os.path.join(iotests.test_dir, 'mid.img') @@ -956,6 +957,54 @@ class TestSetSpeed(iotests.QMPTestCase): self.cancel_and_wait(resume=True) +class TestCompressed(iotests.QMPTestCase): + test_img_init_size = 0 + + def setUp(self): + qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') + qemu_img('create', '-f', iotests.imgfmt, '-o', + 'backing_file=%s' % backing_img, mid_img) + qemu_img('create', '-f', iotests.imgfmt, '-o', + 'backing_file=%s' % mid_img, test_img) + qemu_io('-c', 'write -P 0x1 0 512k', backing_img) + top = json.loads(qemu_img_pipe('info', '--output=json', test_img)) + self.test_img_init_size = top['actual-size'] + self.vm = iotests.VM().add_drive(test_img, "backing.node-name=mid," + + "backing.backing.node-name=base," + + "compress=on") + self.vm.launch() + + def tearDown(self): + self.vm.shutdown() + os.remove(test_img) + os.remove(mid_img) + os.remove(backing_img) + + def test_stream_compress(self): + self.assert_no_active_block_jobs() + + result = self.vm.qmp('block-stream', device='mid', job_id='stream-mid') + self.assert_qmp(result, 'return', {}) + + self.wait_until_completed(drive='stream-mid') + # Remove other 'JOB_STATUS_CHANGE' events for the job 'stream-mid' + self.vm.get_qmp_events(wait=True) + + result = self.vm.qmp('block-stream', device='drive0', + job_id='stream-top') + self.assert_qmp(result, 'return', {}) + + self.wait_until_completed(drive='stream-top') + self.vm.shutdown() + + top = json.loads(qemu_img_pipe('info', '--output=json', test_img)) + mid = json.loads(qemu_img_pipe('info', '--output=json', mid_img)) + base = json.loads(qemu_img_pipe('info', '--output=json', backing_img)) + + self.assertEqual(mid['actual-size'], base['actual-size']) + self.assertLess(top['actual-size'], mid['actual-size']) + self.assertLess(self.test_img_init_size, top['actual-size']) + if __name__ == '__main__': iotests.main(supported_fmts=['qcow2', 'qed'], supported_protocols=['file']) diff --git a/tests/qemu-iotests/030.out b/tests/qemu-iotests/030.out index 6d9bee1..af8dac1 100644 --- a/tests/qemu-iotests/030.out +++ b/tests/qemu-iotests/030.out @@ -1,5 +1,5 @@ -........................... +............................ ---------------------------------------------------------------------- -Ran 27 tests +Ran 28 tests OK