From patchwork Tue Oct 31 18:59:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 13442202 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 051B3C4332F for ; Tue, 31 Oct 2023 19:02:19 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qxtya-0004QE-Ad; Tue, 31 Oct 2023 15:00:32 -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 1qxtyO-0004Jw-NL for qemu-devel@nongnu.org; Tue, 31 Oct 2023 15:00:20 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qxtxo-00069O-No for qemu-devel@nongnu.org; Tue, 31 Oct 2023 15:00:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1698778784; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6t+CAONX0I/FpxKm+20LNomzln0cdMjNgXhxO4YSWdA=; b=ccLwjYVucNovnZ7KBahXyav0iZC0YB+yDqAgQCxGoGIsfV43wKMwHBLUUzil19dFifoPu3 cNY0ckNPtV9SIqQurU7nM46N9FLaL1C96qqPSI3sw/v5+EE3GiX6Mx5FCa+zvvG7q2IerB f0MMDa90Dt4N0na9c0NLmCP+xqncT5Q= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-67-Q6khd0W_ONSaPlaq2e5L3A-1; Tue, 31 Oct 2023 14:59:35 -0400 X-MC-Unique: Q6khd0W_ONSaPlaq2e5L3A-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4F4A7821C20; Tue, 31 Oct 2023 18:59:35 +0000 (UTC) Received: from merkur.fritz.box (unknown [10.39.194.218]) by smtp.corp.redhat.com (Postfix) with ESMTP id B1EF6143; Tue, 31 Oct 2023 18:59:34 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, qemu-devel@nongnu.org Subject: [PULL 18/27] blockjob: introduce block-job-change QMP command Date: Tue, 31 Oct 2023 19:59:09 +0100 Message-ID: <20231031185918.346940-19-kwolf@redhat.com> In-Reply-To: <20231031185918.346940-1-kwolf@redhat.com> References: <20231031185918.346940-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.1 Received-SPF: pass client-ip=170.10.129.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.481, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Fiona Ebner which will allow changing job-type-specific options after job creation. In the JobVerbTable, the same allow bits as for set-speed are used, because set-speed can be considered an existing change command. Signed-off-by: Fiona Ebner Reviewed-by: Vladimir Sementsov-Ogievskiy Message-ID: <20231031135431.393137-2-f.ebner@proxmox.com> Reviewed-by: Kevin Wolf Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- qapi/block-core.json | 26 ++++++++++++++++++++++++++ qapi/job.json | 4 +++- include/block/blockjob.h | 11 +++++++++++ include/block/blockjob_int.h | 7 +++++++ blockdev.c | 14 ++++++++++++++ blockjob.c | 20 ++++++++++++++++++++ job.c | 1 + 7 files changed, 82 insertions(+), 1 deletion(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index 89751d81f2..c6f31a9399 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -3044,6 +3044,32 @@ { 'command': 'block-job-finalize', 'data': { 'id': 'str' }, 'allow-preconfig': true } +## +# @BlockJobChangeOptions: +# +# Block job options that can be changed after job creation. +# +# @id: The job identifier +# +# @type: The job type +# +# Since 8.2 +## +{ 'union': 'BlockJobChangeOptions', + 'base': { 'id': 'str', 'type': 'JobType' }, + 'discriminator': 'type', + 'data': {} } + +## +# @block-job-change: +# +# Change the block job's options. +# +# Since: 8.2 +## +{ 'command': 'block-job-change', + 'data': 'BlockJobChangeOptions', 'boxed': true } + ## # @BlockdevDiscardOptions: # diff --git a/qapi/job.json b/qapi/job.json index 7f0ba090de..b3957207a4 100644 --- a/qapi/job.json +++ b/qapi/job.json @@ -105,11 +105,13 @@ # # @finalize: see @job-finalize # +# @change: see @block-job-change (since 8.2) +# # Since: 2.12 ## { 'enum': 'JobVerb', 'data': ['cancel', 'pause', 'resume', 'set-speed', 'complete', 'dismiss', - 'finalize' ] } + 'finalize', 'change' ] } ## # @JOB_STATUS_CHANGE: diff --git a/include/block/blockjob.h b/include/block/blockjob.h index 058b0c824c..95854f1477 100644 --- a/include/block/blockjob.h +++ b/include/block/blockjob.h @@ -172,6 +172,17 @@ bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs); */ bool block_job_set_speed_locked(BlockJob *job, int64_t speed, Error **errp); +/** + * block_job_change_locked: + * @job: The job to change. + * @opts: The new options. + * @errp: Error object. + * + * Change the job according to opts. + */ +void block_job_change_locked(BlockJob *job, BlockJobChangeOptions *opts, + Error **errp); + /** * block_job_query_locked: * @job: The job to get information about. diff --git a/include/block/blockjob_int.h b/include/block/blockjob_int.h index 104824040c..a4656d4cb5 100644 --- a/include/block/blockjob_int.h +++ b/include/block/blockjob_int.h @@ -67,6 +67,13 @@ struct BlockJobDriver { void (*attached_aio_context)(BlockJob *job, AioContext *new_context); void (*set_speed)(BlockJob *job, int64_t speed); + + /* + * Change the @job's options according to @opts. + * + * Note that this can already be called before the job coroutine is running. + */ + void (*change)(BlockJob *job, BlockJobChangeOptions *opts, Error **errp); }; /* diff --git a/blockdev.c b/blockdev.c index 877e3a26d4..1517dc6210 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3392,6 +3392,20 @@ void qmp_block_job_dismiss(const char *id, Error **errp) job_dismiss_locked(&job, errp); } +void qmp_block_job_change(BlockJobChangeOptions *opts, Error **errp) +{ + BlockJob *job; + + JOB_LOCK_GUARD(); + job = find_block_job_locked(opts->id, errp); + + if (!job) { + return; + } + + block_job_change_locked(job, opts, errp); +} + void qmp_change_backing_file(const char *device, const char *image_node_name, const char *backing_file, diff --git a/blockjob.c b/blockjob.c index 953dc1b6dc..f0505ad232 100644 --- a/blockjob.c +++ b/blockjob.c @@ -330,6 +330,26 @@ static bool block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) return block_job_set_speed_locked(job, speed, errp); } +void block_job_change_locked(BlockJob *job, BlockJobChangeOptions *opts, + Error **errp) +{ + const BlockJobDriver *drv = block_job_driver(job); + + GLOBAL_STATE_CODE(); + + if (job_apply_verb_locked(&job->job, JOB_VERB_CHANGE, errp)) { + return; + } + + if (drv->change) { + job_unlock(); + drv->change(job, opts, errp); + job_lock(); + } else { + error_setg(errp, "Job type does not support change"); + } +} + void block_job_ratelimit_processed_bytes(BlockJob *job, uint64_t n) { IO_CODE(); diff --git a/job.c b/job.c index 72d57f0934..99a2e54b54 100644 --- a/job.c +++ b/job.c @@ -80,6 +80,7 @@ bool JobVerbTable[JOB_VERB__MAX][JOB_STATUS__MAX] = { [JOB_VERB_COMPLETE] = {0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0}, [JOB_VERB_FINALIZE] = {0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0}, [JOB_VERB_DISMISS] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0}, + [JOB_VERB_CHANGE] = {0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0}, }; /* Transactional group of jobs */