From patchwork Tue Oct 20 11:39:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhengui li X-Patchwork-Id: 11846419 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 209A515E6 for ; Tue, 20 Oct 2020 11:41:07 +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 B10142098B for ; Tue, 20 Oct 2020 11:41:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B10142098B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.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]:52684 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kUq0n-0008Rd-M3 for patchwork-qemu-devel@patchwork.kernel.org; Tue, 20 Oct 2020 07:41:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56800) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kUpzM-0006Y2-IL; Tue, 20 Oct 2020 07:39:37 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:50088 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kUpzI-0002yD-2l; Tue, 20 Oct 2020 07:39:36 -0400 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 5221D299DA043B1BF8D2; Tue, 20 Oct 2020 19:39:25 +0800 (CST) Received: from DESKTOP-80C7KIU.china.huawei.com (10.174.187.210) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Tue, 20 Oct 2020 19:39:15 +0800 From: Zhengui li To: , , , Subject: [PATCH v2 2/2] qemu-img: add support for rate limit in qemu-img convert Date: Tue, 20 Oct 2020 11:39:06 +0000 Message-ID: <1603193946-30096-2-git-send-email-lizhengui@huawei.com> X-Mailer: git-send-email 2.6.4.windows.1 In-Reply-To: <1603193946-30096-1-git-send-email-lizhengui@huawei.com> References: <1603193946-30096-1-git-send-email-lizhengui@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.187.210] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.32; envelope-from=lizhengui@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/20 07:04:17 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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: xieyingtai@huawei.com, lizhengui@huawei.com, qemu-devel@nongnu.org, qemu-block@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Zhengui Currently, there is no rate limit for qemu-img convert. This may cause the task of qemu-img convert to consume all the bandwidth of the storage. This will affect the IO performance of other processes and virtual machines under shared storage. So we add support for offline rate limit in qemu-img convert to get better quality of sevice. Signed-off-by: Zhengui Reviewed-by: Alberto Garcia --- docs/tools/qemu-img.rst | 6 +++++- qemu-img-cmds.hx | 4 ++-- qemu-img.c | 30 +++++++++++++++++++++++++++++- 3 files changed, 36 insertions(+), 4 deletions(-) diff --git a/docs/tools/qemu-img.rst b/docs/tools/qemu-img.rst index bcb11b0..b615aa8 100644 --- a/docs/tools/qemu-img.rst +++ b/docs/tools/qemu-img.rst @@ -188,6 +188,10 @@ Parameters to convert subcommand: allocated target image depending on the host support for getting allocation information. +.. option:: -r + + Rate limit for the convert process + .. option:: --salvage Try to ignore I/O errors when reading. Unless in quiet mode (``-q``), errors @@ -410,7 +414,7 @@ Command description: 4 Error on reading data -.. option:: convert [--object OBJECTDEF] [--image-opts] [--target-image-opts] [--target-is-zero] [--bitmaps] [-U] [-C] [-c] [-p] [-q] [-n] [-f FMT] [-t CACHE] [-T SRC_CACHE] [-O OUTPUT_FMT] [-B BACKING_FILE] [-o OPTIONS] [-l SNAPSHOT_PARAM] [-S SPARSE_SIZE] [-m NUM_COROUTINES] [-W] FILENAME [FILENAME2 [...]] OUTPUT_FILENAME +.. option:: convert [--object OBJECTDEF] [--image-opts] [--target-image-opts] [--target-is-zero] [--bitmaps] [-U] [-C] [-c] [-p] [-q] [-n] [-f FMT] [-t CACHE] [-T SRC_CACHE] [-O OUTPUT_FMT] [-B BACKING_FILE] [-o OPTIONS] [-l SNAPSHOT_PARAM] [-S SPARSE_SIZE] [-r RATE_LIMIT] [-m NUM_COROUTINES] [-W] FILENAME [FILENAME2 [...]] OUTPUT_FILENAME Convert the disk image *FILENAME* or a snapshot *SNAPSHOT_PARAM* to disk image *OUTPUT_FILENAME* using format *OUTPUT_FMT*. It can diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx index 2a31806..7eb489b 100644 --- a/qemu-img-cmds.hx +++ b/qemu-img-cmds.hx @@ -46,9 +46,9 @@ SRST ERST DEF("convert", img_convert, - "convert [--object objectdef] [--image-opts] [--target-image-opts] [--target-is-zero] [--bitmaps] [-U] [-C] [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-B backing_file] [-o options] [-l snapshot_param] [-S sparse_size] [-m num_coroutines] [-W] [--salvage] filename [filename2 [...]] output_filename") + "convert [--object objectdef] [--image-opts] [--target-image-opts] [--target-is-zero] [--bitmaps] [-U] [-C] [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-B backing_file] [-o options] [-l snapshot_param] [-S sparse_size] [-r rate_limit] [-m num_coroutines] [-W] [--salvage] filename [filename2 [...]] output_filename") SRST -.. option:: convert [--object OBJECTDEF] [--image-opts] [--target-image-opts] [--target-is-zero] [--bitmaps] [-U] [-C] [-c] [-p] [-q] [-n] [-f FMT] [-t CACHE] [-T SRC_CACHE] [-O OUTPUT_FMT] [-B BACKING_FILE] [-o OPTIONS] [-l SNAPSHOT_PARAM] [-S SPARSE_SIZE] [-m NUM_COROUTINES] [-W] [--salvage] FILENAME [FILENAME2 [...]] OUTPUT_FILENAME +.. option:: convert [--object OBJECTDEF] [--image-opts] [--target-image-opts] [--target-is-zero] [--bitmaps] [-U] [-C] [-c] [-p] [-q] [-n] [-f FMT] [-t CACHE] [-T SRC_CACHE] [-O OUTPUT_FMT] [-B BACKING_FILE] [-o OPTIONS] [-l SNAPSHOT_PARAM] [-S SPARSE_SIZE] [-r RATE_LIMIT] [-m NUM_COROUTINES] [-W] [--salvage] FILENAME [FILENAME2 [...]] OUTPUT_FILENAME ERST DEF("create", img_create, diff --git a/qemu-img.c b/qemu-img.c index ea66139..8dfe1c4 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -50,6 +50,8 @@ #include "block/qapi.h" #include "crypto/init.h" #include "trace/control.h" +#include "qemu/throttle.h" +#include "block/throttle-groups.h" #define QEMU_IMG_VERSION "qemu-img version " QEMU_FULL_VERSION \ "\n" QEMU_COPYRIGHT "\n" @@ -1672,6 +1674,7 @@ enum ImgConvertBlockStatus { }; #define MAX_COROUTINES 16 +#define CONVERT_THROTTLE_GROUP "img_convert" typedef struct ImgConvertState { BlockBackend **src; @@ -2187,6 +2190,17 @@ static int convert_copy_bitmaps(BlockDriverState *src, BlockDriverState *dst) #define MAX_BUF_SECTORS 32768 +static void set_rate_limit(BlockBackend *blk, int64_t rate_limit) +{ + ThrottleConfig cfg; + + throttle_config_init(&cfg); + cfg.buckets[THROTTLE_BPS_WRITE].avg = rate_limit; + + blk_io_limits_enable(blk, CONVERT_THROTTLE_GROUP); + blk_set_io_limits(blk, &cfg); +} + static int img_convert(int argc, char **argv) { int c, bs_i, flags, src_flags = 0; @@ -2207,6 +2221,7 @@ static int img_convert(int argc, char **argv) bool force_share = false; bool explict_min_sparse = false; bool bitmaps = false; + int64_t rate_limit = 0; ImgConvertState s = (ImgConvertState) { /* Need at least 4k of zeros for sparse detection */ @@ -2229,7 +2244,7 @@ static int img_convert(int argc, char **argv) {"bitmaps", no_argument, 0, OPTION_BITMAPS}, {0, 0, 0, 0} }; - c = getopt_long(argc, argv, ":hf:O:B:Cco:l:S:pt:T:qnm:WU", + c = getopt_long(argc, argv, ":hf:O:B:Cco:l:S:pt:T:qnm:WUr:", long_options, NULL); if (c == -1) { break; @@ -2326,6 +2341,15 @@ static int img_convert(int argc, char **argv) case 'U': force_share = true; break; + case 'r': { + int64_t sval; + + sval = cvtnum("rate limit", optarg); + if (sval < 0) { + goto fail_getopt; + } + rate_limit = sval; + } break; case OPTION_OBJECT: { QemuOpts *object_opts; object_opts = qemu_opts_parse_noisily(&qemu_object_opts, @@ -2715,6 +2739,10 @@ static int img_convert(int argc, char **argv) s.cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; } + if (rate_limit) { + set_rate_limit(s.target, rate_limit); + } + ret = convert_do_copy(&s); /* Now copy the bitmaps */