From patchwork Tue Jan 9 13:13:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 13514940 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 606A1C46CD2 for ; Tue, 9 Jan 2024 13:14:53 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rNBvb-0006vj-BR; Tue, 09 Jan 2024 08:13:59 -0500 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 1rNBvZ-0006vR-0q; Tue, 09 Jan 2024 08:13:57 -0500 Received: from forwardcorp1b.mail.yandex.net ([2a02:6b8:c02:900:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rNBvL-0006NB-TO; Tue, 09 Jan 2024 08:13:56 -0500 Received: from mail-nwsmtp-smtp-corp-main-66.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-66.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:7d8d:0:640:c31b:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 7E49F61B5F; Tue, 9 Jan 2024 16:13:35 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6b8:b081:b59d::1:13]) by mail-nwsmtp-smtp-corp-main-66.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id 9DhYvWNIkiE0-2Oj74Ebq; Tue, 09 Jan 2024 16:13:34 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1704806014; bh=sW5DdP9bkyKjIB76UbewfKRTCYono9YsK07kyFOl/0U=; h=Message-Id:Date:Cc:Subject:To:From; b=JZfE+EDIMT4QqvZU2oO7v77R7ng/5wF+ouKGC/xoGZ31szv/kQfQFBJhTZGy6f0SM awYepN5wLyJi+0NupisM45ySbT3T/g2w/1lfHv4PKPo1oHbrjtZFn/IFnP+TWmp2jP qGv/a6/nM5JAewsEGbIQ/7+JdtRSG12fxh7sEk94= Authentication-Results: mail-nwsmtp-smtp-corp-main-66.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, eblake@redhat.com, hreitz@redhat.com, kwolf@redhat.com, armbru@redhat.com, zeil@yandex-team.ru, yc-core@yandex-team.ru, dave@treblig.org, vsementsov@yandex-team.ru, Leonid Kaplan Subject: [PATCH v2] block-backend: per-device throttling of BLOCK_IO_ERROR reports Date: Tue, 9 Jan 2024 16:13:08 +0300 Message-Id: <20240109131308.455371-1-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Received-SPF: pass client-ip=2a02:6b8:c02:900:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, 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 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Leonid Kaplan BLOCK_IO_ERROR events comes from guest, so we must throttle them. We still want per-device throttling, so let's use device id as a key. Signed-off-by: Leonid Kaplan Signed-off-by: Vladimir Sementsov-Ogievskiy --- v2: add Note: to QAPI doc monitor/monitor.c | 10 ++++++++++ qapi/block-core.json | 2 ++ 2 files changed, 12 insertions(+) diff --git a/monitor/monitor.c b/monitor/monitor.c index 01ede1babd..ad0243e9d7 100644 --- a/monitor/monitor.c +++ b/monitor/monitor.c @@ -309,6 +309,7 @@ int error_printf_unless_qmp(const char *fmt, ...) static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = { /* Limit guest-triggerable events to 1 per second */ [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS }, + [QAPI_EVENT_BLOCK_IO_ERROR] = { 1000 * SCALE_MS }, [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS }, [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS }, [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS }, @@ -498,6 +499,10 @@ static unsigned int qapi_event_throttle_hash(const void *key) hash += g_str_hash(qdict_get_str(evstate->data, "qom-path")); } + if (evstate->event == QAPI_EVENT_BLOCK_IO_ERROR) { + hash += g_str_hash(qdict_get_str(evstate->data, "device")); + } + return hash; } @@ -525,6 +530,11 @@ static gboolean qapi_event_throttle_equal(const void *a, const void *b) qdict_get_str(evb->data, "qom-path")); } + if (eva->event == QAPI_EVENT_BLOCK_IO_ERROR) { + return !strcmp(qdict_get_str(eva->data, "device"), + qdict_get_str(evb->data, "device")); + } + return TRUE; } diff --git a/qapi/block-core.json b/qapi/block-core.json index ca390c5700..32c2c2f030 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -5559,6 +5559,8 @@ # Note: If action is "stop", a STOP event will eventually follow the # BLOCK_IO_ERROR event # +# Note: This event is rate-limited. +# # Since: 0.13 # # Example: