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([185.215.60.153]) by smtp.gmail.com with ESMTPSA id y3-20020a056512044300b0044a9bda3242sm1057573lfk.90.2022.03.30.14.29.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Mar 2022 14:29:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=openvz-org.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=rv+CiCzHjV62zD13urXNP6spV+Pm476sotNs+8GpRa4=; b=0EczUlSmBFNexZIGCFfYwHXWb1r8A4TZ2tsJ6dOb4AmRxRjtxFfbIB+3XvYCUAquQl OVm5ohcQ8RTAnXmWpkrMj4xKPMl0rSJA0HOxtDXYY/cqYa6qCKD/uuOFWAGfKj1Ko7Yb q+p2hO+3VJj6aDr28GftI13/zVql7vGEFAgW7Kd+DPLxikOLCjDVwTEdjGV4xl7WDjOP CGxufw1wuDa6SpcmzKbibYIWyfpzRevUiXtqBhwcA5Ot3F3L9EFgHHpB9Ngch+qVUpkh DTYbNHQaoDVK9f2+08ybmpu00GE4jboeSd9jjHfsZJtUuN6amEsQRxxo8niedy/lOObw kdkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=rv+CiCzHjV62zD13urXNP6spV+Pm476sotNs+8GpRa4=; b=rEpm7pXpdrglqW+rHMv/MEwBIA/khux3lCKWuYf9pqTtshpySKRkXk22E/DYh/J8Xi VwLSgL/GTUpFWS7+jdEHKmxkjgcggpVTSnOvFDYcvlfXiK8MSyF9omelq6vBEIBZXKcq ik4iP8/9zp9TM2bOtQ2uAAU/U+VQXYSbjICdpD7aaZzQnNVlG3GoEYXCfCS9n5zFbK4d JnL2jHicSFjcUIIqucEEoketDB0HHqU1VQn+fMrrTqJaM5zQuzAdxYMx/QVprbIWqjw+ RwTwLqD4HfpYDyNeYFwtPtz3xvuktVHBjq3W3FHG1R0dpSLV7Zo8ORazNeLB2eo3Muxz v8JQ== X-Gm-Message-State: AOAM533z+oOJGkPSkpSNXf36S48yDo5TnGe2QcDceTiB4gn3ORKZMjI1 3essd/jwbJe5U0aecEp2sWZzlq3WmvHwkQ== X-Google-Smtp-Source: ABdhPJxbeBJSSN5YZFZqOJsInHlzS6bxFkjayJY2NULZucWmVP+fGESGu4Ag8igwQLCez9Tr3OZJ6A== X-Received: by 2002:a2e:b014:0:b0:23c:9593:f7 with SMTP id y20-20020a2eb014000000b0023c959300f7mr8271877ljk.209.1648675790858; Wed, 30 Mar 2022 14:29:50 -0700 (PDT) From: Vladimir Sementsov-Ogievskiy X-Google-Original-From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Subject: [PATCH v5 31/45] qapi: block: add blockdev-add transaction action Date: Thu, 31 Mar 2022 00:28:48 +0300 Message-Id: <20220330212902.590099-32-vsementsov@openvz.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220330212902.590099-1-vsementsov@openvz.org> References: <20220330212902.590099-1-vsementsov@openvz.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::230 (failed) 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=2a00:1450:4864:20::230; envelope-from=vladimir.sementsov-ogievskiy@openvz.org; helo=mail-lj1-x230.google.com X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Wed, 30 Mar 2022 19:17:26 -0400 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: , Cc: kwolf@redhat.com, v.sementsov-og@mail.ru, qemu-devel@nongnu.org, Markus Armbruster , hreitz@redhat.com, vsementsov@openvz.org, Eric Blake Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1648683614537100001 Content-Type: text/plain; charset="utf-8" Use new flag to avoid permission updates where possible during blockdev_add, so that a bunch of add/del (and soon, new 'replace') command may be done before actual permission update to avoid intermediate permission conflicts. Signed-off-by: Vladimir Sementsov-Ogievskiy --- blockdev.c | 54 ++++++++++++++++++++++++++++++++++++++++--- qapi/transaction.json | 10 +++++++- 2 files changed, 60 insertions(+), 4 deletions(-) diff --git a/blockdev.c b/blockdev.c index 16a9b98afc..3afd2ceea8 100644 --- a/blockdev.c +++ b/blockdev.c @@ -65,6 +65,8 @@ =20 static int blockdev_del(const char *node_name, GSList **detached, Transaction *tran, Error **errp); +static int blockdev_add(BlockdevOptions *options, GSList **refresh_list, + Transaction *tran, Error **errp); =20 /* Protected by BQL */ QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states =3D @@ -2216,6 +2218,10 @@ static void transaction_action(TransactionAction *ac= t, JobTxn *block_job_txn, blockdev_del(act->u.blockdev_del.data->node_name, refresh_list, tran, errp); return; + case TRANSACTION_ACTION_KIND_BLOCKDEV_ADD: + blockdev_add(act->u.blockdev_add.data, + refresh_list, tran, errp); + return; /* * Where are transactions for MIRROR, COMMIT and STREAM? * Although these blockjobs use transaction callbacks like the backup = job, @@ -2283,7 +2289,8 @@ void qmp_transaction(TransactionActionList *actions, TransactionActionKind type =3D act->value->type; =20 if (refresh_list && - type !=3D TRANSACTION_ACTION_KIND_BLOCKDEV_DEL) + type !=3D TRANSACTION_ACTION_KIND_BLOCKDEV_DEL && + type !=3D TRANSACTION_ACTION_KIND_BLOCKDEV_ADD) { ret =3D bdrv_list_refresh_perms(refresh_list, NULL, tran, errp= ); if (ret < 0) { @@ -3454,7 +3461,21 @@ out: aio_context_release(aio_context); } =20 -void qmp_blockdev_add(BlockdevOptions *options, Error **errp) +static void blockdev_add_abort(void *opaque) +{ + BlockDriverState *bs =3D opaque; + + QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); + bdrv_unref(bs); +} + +TransactionActionDrv blockdev_add_drv =3D { + .abort =3D blockdev_add_abort, +}; + +/* Caller is responsible to refresh permissions */ +static int blockdev_add(BlockdevOptions *options, GSList **refresh_list, + Transaction *tran, Error **errp) { BlockDriverState *bs; QObject *obj; @@ -3472,15 +3493,42 @@ void qmp_blockdev_add(BlockdevOptions *options, Err= or **errp) goto fail; } =20 - bs =3D bds_tree_init(qdict, 0, errp); + bs =3D bds_tree_init(qdict, BDRV_O_NOPERM, errp); if (!bs) { goto fail; } =20 + *refresh_list =3D g_slist_prepend(*refresh_list, bs); + tran_add(tran, &blockdev_add_drv, bs); + bdrv_set_monitor_owned(bs); =20 + visit_free(v); + return 0; + fail: visit_free(v); + return -EINVAL; +} + +void qmp_blockdev_add(BlockdevOptions *options, Error **errp) +{ + int ret; + Transaction *tran =3D tran_new(); + g_autoptr(GSList) refresh_list =3D NULL; + + ret =3D blockdev_add(options, &refresh_list, tran, errp); + if (ret < 0) { + goto out; + } + + ret =3D bdrv_list_refresh_perms(refresh_list, NULL, tran, errp); + if (ret < 0) { + goto out; + } + +out: + tran_finalize(tran, ret); } =20 void qmp_blockdev_reopen(BlockdevOptionsList *reopen_list, Error **errp) diff --git a/qapi/transaction.json b/qapi/transaction.json index ea20df770c..000dd16bb7 100644 --- a/qapi/transaction.json +++ b/qapi/transaction.json @@ -67,7 +67,7 @@ 'block-dirty-bitmap-disable', 'block-dirty-bitmap-merge', 'blockdev-backup', 'blockdev-snapshot', 'blockdev-snapshot-internal-sync', 'blockdev-snapshot-sync', - 'blockdev-del', + 'blockdev-del', 'blockdev-add', { 'name': 'drive-backup', 'features': [ 'deprecated' ] } ] } =20 ## @@ -150,6 +150,13 @@ { 'struct': 'BlockdevDelWrapper', 'data': { 'data': 'BlockdevDel' } } =20 +## +# @BlockdevAddWrapper: +# +# Since: 7.1 +## +{ 'struct': 'BlockdevAddWrapper', + 'data': { 'data': 'BlockdevOptions' } } =20 ## # @TransactionAction: @@ -175,6 +182,7 @@ 'blockdev-snapshot-internal-sync': 'BlockdevSnapshotInternalWrapper= ', 'blockdev-snapshot-sync': 'BlockdevSnapshotSyncWrapper', 'blockdev-del': 'BlockdevDelWrapper', + 'blockdev-add': 'BlockdevAddWrapper', 'drive-backup': 'DriveBackupWrapper' } } =20 --=20 2.35.1