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([2001:b07:6468:f312:63a7:c72e:ea0e:6045]) by smtp.googlemail.com with ESMTPSA id u7sm12378129wrt.18.2021.06.07.07.15.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 07 Jun 2021 07:15:52 -0700 (PDT) Subject: Re: [PATCH] block: add more commands to preconfig mode From: Paolo Bonzini To: qemu-devel@nongnu.org References: <20210511153949.506200-1-pbonzini@redhat.com> Message-ID: <4bec1b40-72f7-3270-40e0-2dfcfe9836fc@redhat.com> Date: Mon, 7 Jun 2021 16:15:46 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <20210511153949.506200-1-pbonzini@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::429; envelope-from=paolo.bonzini@gmail.com; helo=mail-wr1-x429.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.248, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: Kevin Wolf , qemu-block@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 11/05/21 17:39, Paolo Bonzini wrote: > Most block device commands do not require a fully constructed machine. > Allow running them before machine initialization has concluded. > > Signed-off-by: Paolo Bonzini > --- > hmp-commands.hx | 14 +++++ > qapi/block-core.json | 117 +++++++++++++++++++++++++++-------------- > qapi/block-export.json | 21 +++++--- > qapi/block.json | 6 ++- > 4 files changed, 110 insertions(+), 48 deletions(-) > > diff --git a/hmp-commands.hx b/hmp-commands.hx > index 146a13c896..901a50ebd1 100644 > --- a/hmp-commands.hx > +++ b/hmp-commands.hx > @@ -78,6 +78,7 @@ ERST > .help = "resize a block image", > .cmd = hmp_block_resize, > .coroutine = true, > + .flags = "p", > }, > > SRST > @@ -94,6 +95,7 @@ ERST > .params = "device [speed [base]]", > .help = "copy data from a backing file into a block device", > .cmd = hmp_block_stream, > + .flags = "p", > }, > > SRST > @@ -107,6 +109,7 @@ ERST > .params = "device speed", > .help = "set maximum speed for a background block operation", > .cmd = hmp_block_job_set_speed, > + .flags = "p", > }, > > SRST > @@ -122,6 +125,7 @@ ERST > "\n\t\t\t if you want to abort the operation immediately" > "\n\t\t\t instead of keep running until data is in sync)", > .cmd = hmp_block_job_cancel, > + .flags = "p", > }, > > SRST > @@ -135,6 +139,7 @@ ERST > .params = "device", > .help = "stop an active background block operation", > .cmd = hmp_block_job_complete, > + .flags = "p", > }, > > SRST > @@ -149,6 +154,7 @@ ERST > .params = "device", > .help = "pause an active background block operation", > .cmd = hmp_block_job_pause, > + .flags = "p", > }, > > SRST > @@ -162,6 +168,7 @@ ERST > .params = "device", > .help = "resume a paused background block operation", > .cmd = hmp_block_job_resume, > + .flags = "p", > }, > > SRST > @@ -1396,6 +1403,7 @@ ERST > .params = "nbd_server_start [-a] [-w] host:port", > .help = "serve block devices on the given host and port", > .cmd = hmp_nbd_server_start, > + .flags = "p", > }, > SRST > ``nbd_server_start`` *host*:*port* > @@ -1411,6 +1419,7 @@ ERST > .params = "nbd_server_add [-w] device [name]", > .help = "export a block device via NBD", > .cmd = hmp_nbd_server_add, > + .flags = "p", > }, > SRST > ``nbd_server_add`` *device* [ *name* ] > @@ -1426,6 +1435,7 @@ ERST > .params = "nbd_server_remove [-f] name", > .help = "remove an export previously exposed via NBD", > .cmd = hmp_nbd_server_remove, > + .flags = "p", > }, > SRST > ``nbd_server_remove [-f]`` *name* > @@ -1442,6 +1452,7 @@ ERST > .params = "nbd_server_stop", > .help = "stop serving block devices using the NBD protocol", > .cmd = hmp_nbd_server_stop, > + .flags = "p", > }, > SRST > ``nbd_server_stop`` > @@ -1471,6 +1482,7 @@ ERST > .params = "getfd name", > .help = "receive a file descriptor via SCM rights and assign it a name", > .cmd = hmp_getfd, > + .flags = "p", > }, > > SRST > @@ -1486,6 +1498,7 @@ ERST > .params = "closefd name", > .help = "close a file descriptor previously passed via SCM rights", > .cmd = hmp_closefd, > + .flags = "p", > }, > > SRST > @@ -1501,6 +1514,7 @@ ERST > .params = "device bps bps_rd bps_wr iops iops_rd iops_wr", > .help = "change I/O throttle limits for a block drive", > .cmd = hmp_block_set_io_throttle, > + .flags = "p", > }, > > SRST > diff --git a/qapi/block-core.json b/qapi/block-core.json > index 6d227924d0..8bbc06ac86 100644 > --- a/qapi/block-core.json > +++ b/qapi/block-core.json > @@ -680,7 +680,8 @@ > # } > # > ## > -{ 'command': 'query-block', 'returns': ['BlockInfo'] } > +{ 'command': 'query-block', 'returns': ['BlockInfo'], > + 'allow-preconfig': true } > > > ## > @@ -1056,7 +1057,8 @@ > ## > { 'command': 'query-blockstats', > 'data': { '*query-nodes': 'bool' }, > - 'returns': ['BlockStats'] } > + 'returns': ['BlockStats'], > + 'allow-preconfig': true } > > ## > # @BlockdevOnError: > @@ -1205,7 +1207,8 @@ > # > # Since: 1.1 > ## > -{ 'command': 'query-block-jobs', 'returns': ['BlockJobInfo'] } > +{ 'command': 'query-block-jobs', 'returns': ['BlockJobInfo'], > + 'allow-preconfig': true } > > ## > # @block_resize: > @@ -1236,7 +1239,8 @@ > 'data': { '*device': 'str', > '*node-name': 'str', > 'size': 'int' }, > - 'coroutine': true } > + 'coroutine': true, > + 'allow-preconfig': true } > > ## > # @NewImageMode: > @@ -1447,7 +1451,8 @@ > # > ## > { 'command': 'blockdev-snapshot-sync', > - 'data': 'BlockdevSnapshotSync' } > + 'data': 'BlockdevSnapshotSync', > + 'allow-preconfig': true } > > > ## > @@ -1489,7 +1494,8 @@ > ## > { 'command': 'blockdev-snapshot', > 'data': 'BlockdevSnapshot', > - 'features': [ 'allow-write-only-overlay' ] } > + 'features': [ 'allow-write-only-overlay' ], > + 'allow-preconfig': true } > > ## > # @change-backing-file: > @@ -1521,7 +1527,8 @@ > ## > { 'command': 'change-backing-file', > 'data': { 'device': 'str', 'image-node-name': 'str', > - 'backing-file': 'str' } } > + 'backing-file': 'str' }, > + 'allow-preconfig': true } > > ## > # @block-commit: > @@ -1631,7 +1638,8 @@ > '*backing-file': 'str', '*speed': 'int', > '*on-error': 'BlockdevOnError', > '*filter-node-name': 'str', > - '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } } > + '*auto-finalize': 'bool', '*auto-dismiss': 'bool' }, > + 'allow-preconfig': true } > > ## > # @drive-backup: > @@ -1657,7 +1665,8 @@ > # > ## > { 'command': 'drive-backup', 'boxed': true, > - 'data': 'DriveBackup' } > + 'data': 'DriveBackup', > + 'allow-preconfig': true } > > ## > # @blockdev-backup: > @@ -1682,7 +1691,8 @@ > # > ## > { 'command': 'blockdev-backup', 'boxed': true, > - 'data': 'BlockdevBackup' } > + 'data': 'BlockdevBackup', > + 'allow-preconfig': true } > > > ## > @@ -1748,7 +1758,8 @@ > ## > { 'command': 'query-named-block-nodes', > 'returns': [ 'BlockDeviceInfo' ], > - 'data': { '*flat': 'bool' } } > + 'data': { '*flat': 'bool' }, > + 'allow-preconfig': true } > > ## > # @XDbgBlockGraphNodeType: > @@ -1856,7 +1867,8 @@ > # > # Since: 4.0 > ## > -{ 'command': 'x-debug-query-block-graph', 'returns': 'XDbgBlockGraph' } > +{ 'command': 'x-debug-query-block-graph', 'returns': 'XDbgBlockGraph', > + 'allow-preconfig': true } > > ## > # @drive-mirror: > @@ -1884,7 +1896,8 @@ > # > ## > { 'command': 'drive-mirror', 'boxed': true, > - 'data': 'DriveMirror' } > + 'data': 'DriveMirror', > + 'allow-preconfig': true } > > ## > # @DriveMirror: > @@ -2055,7 +2068,8 @@ > # > ## > { 'command': 'block-dirty-bitmap-add', > - 'data': 'BlockDirtyBitmapAdd' } > + 'data': 'BlockDirtyBitmapAdd', > + 'allow-preconfig': true } > > ## > # @block-dirty-bitmap-remove: > @@ -2079,7 +2093,8 @@ > # > ## > { 'command': 'block-dirty-bitmap-remove', > - 'data': 'BlockDirtyBitmap' } > + 'data': 'BlockDirtyBitmap', > + 'allow-preconfig': true } > > ## > # @block-dirty-bitmap-clear: > @@ -2102,7 +2117,8 @@ > # > ## > { 'command': 'block-dirty-bitmap-clear', > - 'data': 'BlockDirtyBitmap' } > + 'data': 'BlockDirtyBitmap', > + 'allow-preconfig': true } > > ## > # @block-dirty-bitmap-enable: > @@ -2123,7 +2139,8 @@ > # > ## > { 'command': 'block-dirty-bitmap-enable', > - 'data': 'BlockDirtyBitmap' } > + 'data': 'BlockDirtyBitmap', > + 'allow-preconfig': true } > > ## > # @block-dirty-bitmap-disable: > @@ -2144,7 +2161,8 @@ > # > ## > { 'command': 'block-dirty-bitmap-disable', > - 'data': 'BlockDirtyBitmap' } > + 'data': 'BlockDirtyBitmap', > + 'allow-preconfig': true } > > ## > # @block-dirty-bitmap-merge: > @@ -2176,7 +2194,8 @@ > # > ## > { 'command': 'block-dirty-bitmap-merge', > - 'data': 'BlockDirtyBitmapMerge' } > + 'data': 'BlockDirtyBitmapMerge', > + 'allow-preconfig': true } > > ## > # @BlockDirtyBitmapSha256: > @@ -2203,7 +2222,8 @@ > # Since: 2.10 > ## > { 'command': 'x-debug-block-dirty-bitmap-sha256', > - 'data': 'BlockDirtyBitmap', 'returns': 'BlockDirtyBitmapSha256' } > + 'data': 'BlockDirtyBitmap', 'returns': 'BlockDirtyBitmapSha256', > + 'allow-preconfig': true } > > ## > # @blockdev-mirror: > @@ -2288,7 +2308,8 @@ > '*on-target-error': 'BlockdevOnError', > '*filter-node-name': 'str', > '*copy-mode': 'MirrorCopyMode', > - '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } } > + '*auto-finalize': 'bool', '*auto-dismiss': 'bool' }, > + 'allow-preconfig': true } > > ## > # @BlockIOThrottle: > @@ -2560,7 +2581,8 @@ > '*base-node': 'str', '*backing-file': 'str', '*bottom': 'str', > '*speed': 'int', '*on-error': 'BlockdevOnError', > '*filter-node-name': 'str', > - '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } } > + '*auto-finalize': 'bool', '*auto-dismiss': 'bool' }, > + 'allow-preconfig': true } > > ## > # @block-job-set-speed: > @@ -2584,7 +2606,8 @@ > # Since: 1.1 > ## > { 'command': 'block-job-set-speed', > - 'data': { 'device': 'str', 'speed': 'int' } } > + 'data': { 'device': 'str', 'speed': 'int' }, > + 'allow-preconfig': true } > > ## > # @block-job-cancel: > @@ -2623,7 +2646,8 @@ > # > # Since: 1.1 > ## > -{ 'command': 'block-job-cancel', 'data': { 'device': 'str', '*force': 'bool' } } > +{ 'command': 'block-job-cancel', 'data': { 'device': 'str', '*force': 'bool' }, > + 'allow-preconfig': true } > > ## > # @block-job-pause: > @@ -2647,7 +2671,8 @@ > # > # Since: 1.3 > ## > -{ 'command': 'block-job-pause', 'data': { 'device': 'str' } } > +{ 'command': 'block-job-pause', 'data': { 'device': 'str' }, > + 'allow-preconfig': true } > > ## > # @block-job-resume: > @@ -2669,7 +2694,8 @@ > # > # Since: 1.3 > ## > -{ 'command': 'block-job-resume', 'data': { 'device': 'str' } } > +{ 'command': 'block-job-resume', 'data': { 'device': 'str' }, > + 'allow-preconfig': true } > > ## > # @block-job-complete: > @@ -2697,7 +2723,8 @@ > # > # Since: 1.3 > ## > -{ 'command': 'block-job-complete', 'data': { 'device': 'str' } } > +{ 'command': 'block-job-complete', 'data': { 'device': 'str' }, > + 'allow-preconfig': true } > > ## > # @block-job-dismiss: > @@ -2717,7 +2744,8 @@ > # > # Since: 2.12 > ## > -{ 'command': 'block-job-dismiss', 'data': { 'id': 'str' } } > +{ 'command': 'block-job-dismiss', 'data': { 'id': 'str' }, > + 'allow-preconfig': true } > > ## > # @block-job-finalize: > @@ -2735,7 +2763,8 @@ > # > # Since: 2.12 > ## > -{ 'command': 'block-job-finalize', 'data': { 'id': 'str' } } > +{ 'command': 'block-job-finalize', 'data': { 'id': 'str' }, > + 'allow-preconfig': true } > > ## > # @BlockdevDiscardOptions: > @@ -4127,7 +4156,8 @@ > # <- { "return": {} } > # > ## > -{ 'command': 'blockdev-add', 'data': 'BlockdevOptions', 'boxed': true } > +{ 'command': 'blockdev-add', 'data': 'BlockdevOptions', 'boxed': true, > + 'allow-preconfig': true } > > ## > # @x-blockdev-reopen: > @@ -4169,7 +4199,8 @@ > # Since: 4.0 > ## > { 'command': 'x-blockdev-reopen', > - 'data': 'BlockdevOptions', 'boxed': true } > + 'data': 'BlockdevOptions', 'boxed': true, > + 'allow-preconfig': true } > > ## > # @blockdev-del: > @@ -4202,7 +4233,8 @@ > # <- { "return": {} } > # > ## > -{ 'command': 'blockdev-del', 'data': { 'node-name': 'str' } } > +{ 'command': 'blockdev-del', 'data': { 'node-name': 'str' }, > + 'allow-preconfig': true } > > ## > # @BlockdevCreateOptionsFile: > @@ -4709,7 +4741,8 @@ > ## > { 'command': 'blockdev-create', > 'data': { 'job-id': 'str', > - 'options': 'BlockdevCreateOptions' } } > + 'options': 'BlockdevCreateOptions' }, > + 'allow-preconfig': true } > > ## > # @BlockdevAmendOptionsLUKS: > @@ -4777,7 +4810,8 @@ > 'data': { 'job-id': 'str', > 'node-name': 'str', > 'options': 'BlockdevAmendOptions', > - '*force': 'bool' } } > + '*force': 'bool' }, > + 'allow-preconfig': true } > > ## > # @BlockErrorAction: > @@ -5128,7 +5162,8 @@ > # > ## > { 'command': 'block-set-write-threshold', > - 'data': { 'node-name': 'str', 'write-threshold': 'uint64' } } > + 'data': { 'node-name': 'str', 'write-threshold': 'uint64' }, > + 'allow-preconfig': true } > > ## > # @x-blockdev-change: > @@ -5186,7 +5221,8 @@ > { 'command': 'x-blockdev-change', > 'data' : { 'parent': 'str', > '*child': 'str', > - '*node': 'str' } } > + '*node': 'str' }, > + 'allow-preconfig': true } > > ## > # @x-blockdev-set-iothread: > @@ -5226,7 +5262,8 @@ > { 'command': 'x-blockdev-set-iothread', > 'data' : { 'node-name': 'str', > 'iothread': 'StrOrNull', > - '*force': 'bool' } } > + '*force': 'bool' }, > + 'allow-preconfig': true } > > ## > # @QuorumOpType: > @@ -5358,7 +5395,8 @@ > # > ## > { 'command': 'blockdev-snapshot-internal-sync', > - 'data': 'BlockdevSnapshotInternal' } > + 'data': 'BlockdevSnapshotInternal', > + 'allow-preconfig': true } > > ## > # @blockdev-snapshot-delete-internal-sync: > @@ -5405,4 +5443,5 @@ > ## > { 'command': 'blockdev-snapshot-delete-internal-sync', > 'data': { 'device': 'str', '*id': 'str', '*name': 'str'}, > - 'returns': 'SnapshotInfo' } > + 'returns': 'SnapshotInfo', > + 'allow-preconfig': true } > diff --git a/qapi/block-export.json b/qapi/block-export.json > index e819e70cac..c03bc9da2f 100644 > --- a/qapi/block-export.json > +++ b/qapi/block-export.json > @@ -60,7 +60,8 @@ > 'data': { 'addr': 'SocketAddressLegacy', > '*tls-creds': 'str', > '*tls-authz': 'str', > - '*max-connections': 'uint32' } } > + '*max-connections': 'uint32' }, > + 'allow-preconfig': true } > > ## > # @BlockExportOptionsNbdBase: > @@ -177,7 +178,8 @@ > # Since: 1.3 > ## > { 'command': 'nbd-server-add', > - 'data': 'NbdServerAddOptions', 'boxed': true, 'features': ['deprecated'] } > + 'data': 'NbdServerAddOptions', 'boxed': true, 'features': ['deprecated'], > + 'allow-preconfig': true } > > ## > # @BlockExportRemoveMode: > @@ -222,7 +224,8 @@ > ## > { 'command': 'nbd-server-remove', > 'data': {'name': 'str', '*mode': 'BlockExportRemoveMode'}, > - 'features': ['deprecated'] } > + 'features': ['deprecated'], > + 'allow-preconfig': true } > > ## > # @nbd-server-stop: > @@ -232,7 +235,8 @@ > # > # Since: 1.3 > ## > -{ 'command': 'nbd-server-stop' } > +{ 'command': 'nbd-server-stop', > + 'allow-preconfig': true } > > ## > # @BlockExportType: > @@ -301,7 +305,8 @@ > # Since: 5.2 > ## > { 'command': 'block-export-add', > - 'data': 'BlockExportOptions', 'boxed': true } > + 'data': 'BlockExportOptions', 'boxed': true, > + 'allow-preconfig': true } > > ## > # @block-export-del: > @@ -321,7 +326,8 @@ > # Since: 5.2 > ## > { 'command': 'block-export-del', > - 'data': { 'id': 'str', '*mode': 'BlockExportRemoveMode' } } > + 'data': { 'id': 'str', '*mode': 'BlockExportRemoveMode' }, > + 'allow-preconfig': true } > > ## > # @BLOCK_EXPORT_DELETED: > @@ -365,4 +371,5 @@ > # > # Since: 5.2 > ## > -{ 'command': 'query-block-exports', 'returns': ['BlockExportInfo'] } > +{ 'command': 'query-block-exports', 'returns': ['BlockExportInfo'], > + 'allow-preconfig': true } > diff --git a/qapi/block.json b/qapi/block.json > index 82fcf2c914..cc500df865 100644 > --- a/qapi/block.json > +++ b/qapi/block.json > @@ -493,7 +493,8 @@ > # <- { "return": {} } > ## > { 'command': 'block_set_io_throttle', 'boxed': true, > - 'data': 'BlockIOThrottle' } > + 'data': 'BlockIOThrottle', > + 'allow-preconfig': true } > > ## > # @block-latency-histogram-set: > @@ -569,4 +570,5 @@ > '*boundaries': ['uint64'], > '*boundaries-read': ['uint64'], > '*boundaries-write': ['uint64'], > - '*boundaries-flush': ['uint64'] } } > + '*boundaries-flush': ['uint64'] }, > + 'allow-preconfig': true } > Ping. Paolo