From patchwork Sun Oct 18 05:36:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhengui li X-Patchwork-Id: 11843199 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 44DF514B7 for ; Sun, 18 Oct 2020 05:38:05 +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 ACD602080D for ; Sun, 18 Oct 2020 05:38:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ACD602080D 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]:56754 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kU1ON-0003TM-Ck for patchwork-qemu-devel@patchwork.kernel.org; Sun, 18 Oct 2020 01:38:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34786) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kU1NE-0002YW-D7; Sun, 18 Oct 2020 01:36:52 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:5181 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 1kU1NC-0004FZ-6b; Sun, 18 Oct 2020 01:36:52 -0400 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id C8E32EFBE5B79B732E85; Sun, 18 Oct 2020 13:36:43 +0800 (CST) Received: from DESKTOP-80C7KIU.china.huawei.com (10.174.187.210) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.487.0; Sun, 18 Oct 2020 13:36:33 +0800 From: Zhengui li To: , , , Subject: [PATCH] qemu-img: add support for rate limit in qemu-img convert Date: Sun, 18 Oct 2020 05:36:30 +0000 Message-ID: <1602999390-21324-1-git-send-email-lizhengui@huawei.com> X-Mailer: git-send-email 2.6.4.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.187.210] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.190; envelope-from=lizhengui@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/18 01:36:44 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 --- qemu-img-cmds.hx | 4 ++-- qemu-img.c | 35 ++++++++++++++++++++++++++++++++++- 2 files changed, 36 insertions(+), 3 deletions(-) diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx index ed55b76..70c0bf7 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 67c83b47..d27d8a6 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 +2341,16 @@ static int img_convert(int argc, char **argv) case 'U': force_share = true; break; + case 'r': { + char *end; + unsigned long long sval = strtoull(optarg, &end, 10); + if (*end != '\0' || sval > UINT_MAX) { + error_report("rate limit parse failed"); + ret = -1; + goto fail_getopt; + } + rate_limit = (int64_t)sval * 1024 * 1024; + } break; case OPTION_OBJECT: { QemuOpts *object_opts; object_opts = qemu_opts_parse_noisily(&qemu_object_opts, @@ -2715,6 +2740,10 @@ 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 */ @@ -2730,6 +2759,10 @@ out: qemu_opts_del(opts); qemu_opts_free(create_opts); qemu_opts_del(sn_opts); + if (s.target && rate_limit && + blk_get_public(s.target)->throttle_group_member.throttle_state) { + blk_io_limits_disable(s.target); + } qobject_unref(open_opts); blk_unref(s.target); if (s.src) {