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![Fiona Ebner](/assets/img/avatar_default.png)
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 <f.ebner@proxmox.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Message-ID: <20231031135431.393137-2-f.ebner@proxmox.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
277 lines
7.3 KiB
Python
277 lines
7.3 KiB
Python
# -*- Mode: Python -*-
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# vim: filetype=python
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##
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# = Background jobs
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##
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##
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# @JobType:
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#
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# Type of a background job.
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#
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# @commit: block commit job type, see "block-commit"
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#
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# @stream: block stream job type, see "block-stream"
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#
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# @mirror: drive mirror job type, see "drive-mirror"
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#
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# @backup: drive backup job type, see "drive-backup"
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#
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# @create: image creation job type, see "blockdev-create" (since 3.0)
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#
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# @amend: image options amend job type, see "x-blockdev-amend" (since
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# 5.1)
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#
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# @snapshot-load: snapshot load job type, see "snapshot-load" (since
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# 6.0)
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#
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# @snapshot-save: snapshot save job type, see "snapshot-save" (since
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# 6.0)
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#
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# @snapshot-delete: snapshot delete job type, see "snapshot-delete"
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# (since 6.0)
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#
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# Since: 1.7
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##
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{ 'enum': 'JobType',
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'data': ['commit', 'stream', 'mirror', 'backup', 'create', 'amend',
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'snapshot-load', 'snapshot-save', 'snapshot-delete'] }
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##
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# @JobStatus:
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#
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# Indicates the present state of a given job in its lifetime.
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#
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# @undefined: Erroneous, default state. Should not ever be visible.
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#
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# @created: The job has been created, but not yet started.
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#
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# @running: The job is currently running.
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#
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# @paused: The job is running, but paused. The pause may be requested
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# by either the QMP user or by internal processes.
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#
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# @ready: The job is running, but is ready for the user to signal
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# completion. This is used for long-running jobs like mirror that
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# are designed to run indefinitely.
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#
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# @standby: The job is ready, but paused. This is nearly identical to
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# @paused. The job may return to @ready or otherwise be canceled.
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#
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# @waiting: The job is waiting for other jobs in the transaction to
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# converge to the waiting state. This status will likely not be
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# visible for the last job in a transaction.
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#
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# @pending: The job has finished its work, but has finalization steps
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# that it needs to make prior to completing. These changes will
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# require manual intervention via @job-finalize if auto-finalize
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# was set to false. These pending changes may still fail.
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#
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# @aborting: The job is in the process of being aborted, and will
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# finish with an error. The job will afterwards report that it is
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# @concluded. This status may not be visible to the management
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# process.
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#
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# @concluded: The job has finished all work. If auto-dismiss was set
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# to false, the job will remain in the query list until it is
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# dismissed via @job-dismiss.
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#
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# @null: The job is in the process of being dismantled. This state
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# should not ever be visible externally.
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#
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# Since: 2.12
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##
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{ 'enum': 'JobStatus',
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'data': ['undefined', 'created', 'running', 'paused', 'ready', 'standby',
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'waiting', 'pending', 'aborting', 'concluded', 'null' ] }
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##
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# @JobVerb:
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#
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# Represents command verbs that can be applied to a job.
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#
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# @cancel: see @job-cancel
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#
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# @pause: see @job-pause
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#
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# @resume: see @job-resume
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#
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# @set-speed: see @block-job-set-speed
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#
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# @complete: see @job-complete
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#
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# @dismiss: see @job-dismiss
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#
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# @finalize: see @job-finalize
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#
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# @change: see @block-job-change (since 8.2)
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#
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# Since: 2.12
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##
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{ 'enum': 'JobVerb',
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'data': ['cancel', 'pause', 'resume', 'set-speed', 'complete', 'dismiss',
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'finalize', 'change' ] }
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##
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# @JOB_STATUS_CHANGE:
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#
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# Emitted when a job transitions to a different status.
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#
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# @id: The job identifier
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#
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# @status: The new job status
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#
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# Since: 3.0
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##
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{ 'event': 'JOB_STATUS_CHANGE',
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'data': { 'id': 'str',
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'status': 'JobStatus' } }
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##
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# @job-pause:
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#
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# Pause an active job.
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#
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# This command returns immediately after marking the active job for
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# pausing. Pausing an already paused job is an error.
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#
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# The job will pause as soon as possible, which means transitioning
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# into the PAUSED state if it was RUNNING, or into STANDBY if it was
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# READY. The corresponding JOB_STATUS_CHANGE event will be emitted.
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#
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# Cancelling a paused job automatically resumes it.
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#
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# @id: The job identifier.
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#
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# Since: 3.0
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##
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{ 'command': 'job-pause', 'data': { 'id': 'str' } }
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##
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# @job-resume:
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#
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# Resume a paused job.
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#
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# This command returns immediately after resuming a paused job.
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# Resuming an already running job is an error.
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#
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# @id: The job identifier.
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#
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# Since: 3.0
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##
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{ 'command': 'job-resume', 'data': { 'id': 'str' } }
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##
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# @job-cancel:
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#
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# Instruct an active background job to cancel at the next opportunity.
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# This command returns immediately after marking the active job for
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# cancellation.
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#
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# The job will cancel as soon as possible and then emit a
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# JOB_STATUS_CHANGE event. Usually, the status will change to
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# ABORTING, but it is possible that a job successfully completes (e.g.
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# because it was almost done and there was no opportunity to cancel
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# earlier than completing the job) and transitions to PENDING instead.
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#
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# @id: The job identifier.
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#
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# Since: 3.0
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##
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{ 'command': 'job-cancel', 'data': { 'id': 'str' } }
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##
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# @job-complete:
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#
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# Manually trigger completion of an active job in the READY state.
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#
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# @id: The job identifier.
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#
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# Since: 3.0
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##
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{ 'command': 'job-complete', 'data': { 'id': 'str' } }
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##
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# @job-dismiss:
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#
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# Deletes a job that is in the CONCLUDED state. This command only
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# needs to be run explicitly for jobs that don't have automatic
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# dismiss enabled.
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#
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# This command will refuse to operate on any job that has not yet
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# reached its terminal state, JOB_STATUS_CONCLUDED. For jobs that make
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# use of JOB_READY event, job-cancel or job-complete will still need
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# to be used as appropriate.
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#
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# @id: The job identifier.
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#
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# Since: 3.0
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##
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{ 'command': 'job-dismiss', 'data': { 'id': 'str' } }
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##
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# @job-finalize:
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#
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# Instructs all jobs in a transaction (or a single job if it is not
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# part of any transaction) to finalize any graph changes and do any
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# necessary cleanup. This command requires that all involved jobs are
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# in the PENDING state.
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#
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# For jobs in a transaction, instructing one job to finalize will
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# force ALL jobs in the transaction to finalize, so it is only
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# necessary to instruct a single member job to finalize.
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#
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# @id: The identifier of any job in the transaction, or of a job that
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# is not part of any transaction.
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#
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# Since: 3.0
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##
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{ 'command': 'job-finalize', 'data': { 'id': 'str' } }
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##
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# @JobInfo:
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#
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# Information about a job.
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#
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# @id: The job identifier
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#
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# @type: The kind of job that is being performed
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#
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# @status: Current job state/status
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#
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# @current-progress: Progress made until now. The unit is arbitrary
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# and the value can only meaningfully be used for the ratio of
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# @current-progress to @total-progress. The value is
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# monotonically increasing.
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#
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# @total-progress: Estimated @current-progress value at the completion
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# of the job. This value can arbitrarily change while the job is
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# running, in both directions.
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#
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# @error: If this field is present, the job failed; if it is still
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# missing in the CONCLUDED state, this indicates successful
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# completion.
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#
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# The value is a human-readable error message to describe the
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# reason for the job failure. It should not be parsed by
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# applications.
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#
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# Since: 3.0
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##
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{ 'struct': 'JobInfo',
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'data': { 'id': 'str', 'type': 'JobType', 'status': 'JobStatus',
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'current-progress': 'int', 'total-progress': 'int',
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'*error': 'str' } }
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##
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# @query-jobs:
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#
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# Return information about jobs.
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#
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# Returns: a list with a @JobInfo for each active job
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#
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# Since: 3.0
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##
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{ 'command': 'query-jobs', 'returns': ['JobInfo'] }
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