From nobody Mon Feb 9 20:41:33 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1743512761; cv=none; d=zohomail.com; s=zohoarc; b=Tm6CNDOqVgM5ADh56KfnC4/7WrB5PyoQuYu3tDIUBbUW8hAqUXDyllvoYscMQqfokze1V448zDsPsuNyxDbv0QH8KJnPXTzfM8WGY/itoFh7tdSGGoz6xoOkfLIhXIqkFlwoQ2CrIeUb0FseRbJv6HEzC71GANqBVJnKlfXlQIE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1743512761; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=OYDzuBR7sOVnflibQd2fdVRsUiCS62JYeu56lFXToco=; b=J/BXMnooHBOJOk/3doV9WWNZi72QFE8zDy/x+3WlKPS2jvyRVdBtaJRGciR318EDOLSkBljHg4qrFmaj3PafQXzjNHdoVhqdgChC/2+j7qNuiOGmdNA4ldoNKKCKkDb4Bb7WHuCrNDXCAyD6UucJVoiGJGLM0+oiy41q+ygakBo= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1743512761525134.5508881448509; Tue, 1 Apr 2025 06:06:01 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tzbJG-00062k-O9; Tue, 01 Apr 2025 09:05:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tzbIe-0005YS-1V; Tue, 01 Apr 2025 09:05:05 -0400 Received: from szxga08-in.huawei.com ([45.249.212.255]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tzbIT-0008Bv-HY; Tue, 01 Apr 2025 09:05:03 -0400 Received: from mail.maildlp.com (unknown [172.19.88.194]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4ZRp9S5cVqz1d0vp; Tue, 1 Apr 2025 21:04:12 +0800 (CST) Received: from kwepemk500007.china.huawei.com (unknown [7.202.194.92]) by mail.maildlp.com (Postfix) with ESMTPS id 4FBDD14010D; Tue, 1 Apr 2025 21:04:43 +0800 (CST) Received: from huawei.com (10.246.99.19) by kwepemk500007.china.huawei.com (7.202.194.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 1 Apr 2025 21:04:41 +0800 To: CC: , , , , , , , , , , , , , , , , , , Subject: [PATCH v4 2/3] qapi/throttle: add timeout parameter for qmp_block_set_io_throttle() Date: Tue, 1 Apr 2025 21:02:59 +0800 Message-ID: <20250401130300.1457584-3-zoudongjie@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20250401130300.1457584-1-zoudongjie@huawei.com> References: <20250401130300.1457584-1-zoudongjie@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.246.99.19] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemk500007.china.huawei.com (7.202.194.92) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=45.249.212.255; envelope-from=zoudongjie@huawei.com; helo=szxga08-in.huawei.com 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_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: zoudongjie From: zoudongjie via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1743512762674019000 Content-Type: text/plain; charset="utf-8" From: Zhu Yangyang Calling qmp_block_set_io_throttle() will be blocked for a long time when a network disk is configured and the network failure is just about to occur. Therefore, we add a timeout parameter for qmp_block_set_io_throttle to cont= rol its execution duration. The default value of timeout is 0, that is infinite wait, consistent with previous behavior. Signed-off-by: Zhu Yangyang --- block/block-backend.c | 14 +++++++++++++- block/qapi-system.c | 10 +++++++++- include/system/block-backend-global-state.h | 1 + qapi/block-core.json | 5 ++++- 4 files changed, 27 insertions(+), 3 deletions(-) diff --git a/block/block-backend.c b/block/block-backend.c index a402db13f2..fc1554ea55 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -2679,20 +2679,32 @@ void blk_set_io_limits(BlockBackend *blk, ThrottleC= onfig *cfg) } =20 void blk_io_limits_disable(BlockBackend *blk) +{ + blk_io_limits_disable_timeout(blk, 0); +} + +int blk_io_limits_disable_timeout(BlockBackend *blk, uint64_t timeout_ns) { BlockDriverState *bs =3D blk_bs(blk); ThrottleGroupMember *tgm =3D &blk->public.throttle_group_member; + int ret =3D 0; + assert(tgm->throttle_state); GLOBAL_STATE_CODE(); if (bs) { bdrv_ref(bs); - bdrv_drained_begin(bs); + ret =3D bdrv_drained_begin_timeout(bs, timeout_ns); + if (ret < 0) { + goto out; + } } throttle_group_unregister_tgm(tgm); +out: if (bs) { bdrv_drained_end(bs); bdrv_unref(bs); } + return ret; } =20 /* should be called before blk_set_io_limits if a limit is set */ diff --git a/block/qapi-system.c b/block/qapi-system.c index 54b7409b2b..195cbc74c3 100644 --- a/block/qapi-system.c +++ b/block/qapi-system.c @@ -423,6 +423,7 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Er= ror **errp) ThrottleConfig cfg; BlockDriverState *bs; BlockBackend *blk; + uint64_t timeout_ns; =20 blk =3D qmp_get_blk(arg->device, arg->id, errp); if (!blk) { @@ -444,6 +445,10 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, E= rror **errp) cfg.buckets[THROTTLE_OPS_READ].avg =3D arg->iops_rd; cfg.buckets[THROTTLE_OPS_WRITE].avg =3D arg->iops_wr; =20 + timeout_ns =3D 0; /* 0 means infinite */ + if (arg->has_timeout) { + timeout_ns =3D arg->timeout * NANOSECONDS_PER_SECOND; + } if (arg->has_bps_max) { cfg.buckets[THROTTLE_BPS_TOTAL].max =3D arg->bps_max; } @@ -502,7 +507,10 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, E= rror **errp) blk_set_io_limits(blk, &cfg); } else if (blk_get_public(blk)->throttle_group_member.throttle_state) { /* If all throttling settings are set to 0, disable I/O limits */ - blk_io_limits_disable(blk); + if (blk_io_limits_disable_timeout(blk, timeout_ns) < 0) { + error_setg(errp, "command timed out"); + return; + } } } =20 diff --git a/include/system/block-backend-global-state.h b/include/system/b= lock-backend-global-state.h index 35b5e8380b..8a2a6cbda4 100644 --- a/include/system/block-backend-global-state.h +++ b/include/system/block-backend-global-state.h @@ -110,6 +110,7 @@ int blk_probe_geometry(BlockBackend *blk, HDGeometry *g= eo); =20 void blk_set_io_limits(BlockBackend *blk, ThrottleConfig *cfg); void blk_io_limits_disable(BlockBackend *blk); +int blk_io_limits_disable_timeout(BlockBackend *blk, uint64_t timeout_ns); void blk_io_limits_enable(BlockBackend *blk, const char *group); void blk_io_limits_update_group(BlockBackend *blk, const char *group); void blk_set_force_allow_inactivate(BlockBackend *blk); diff --git a/qapi/block-core.json b/qapi/block-core.json index b1937780e1..a75ff1cb0c 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -2626,6 +2626,9 @@ # # @group: throttle group name (Since 2.4) # +# @timeout: In seconds. Timeout for block_set_io_throttle, +# 0 means no limit. Defaults to 0. (Since 10.1) +# # Features: # # @deprecated: Member @device is deprecated. Use @id instead. @@ -2642,7 +2645,7 @@ '*bps_max_length': 'int', '*bps_rd_max_length': 'int', '*bps_wr_max_length': 'int', '*iops_max_length': 'int', '*iops_rd_max_length': 'int', '*iops_wr_max_length': 'int', - '*iops_size': 'int', '*group': 'str' } } + '*iops_size': 'int', '*group': 'str', '*timeout': 'uint32'} } =20 ## # @ThrottleLimits: --=20 2.33.0