91 lines
2.5 KiB
Plaintext
91 lines
2.5 KiB
Plaintext
Disk Device Protocols
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=====================
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disk device job scheduled message
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target: Registered job update BMessengers
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message: B_DISK_DEVICE_JOB_SCHEDULED
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"job_id": B_INT32_TYPE
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reply: none (asynchronous message)
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message fields:
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- job_id: Unique job identifier
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-----------------------------------------------------------------------
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disk device job initiated message
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target: Registered job update BMessengers
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message: B_DISK_DEVICE_JOB_INITIATED
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"job_id": B_INT32_TYPE
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reply: none (asynchronous message)
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message fields:
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- job_id: Unique job identifier
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-----------------------------------------------------------------------
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disk device job canceled message
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target: Registered job update BMessengers
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message: B_DISK_DEVICE_JOB_CANCELED
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"job_id": B_INT32_TYPE
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reply: none (asynchronous message)
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message fields:
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- job_id: Unique job identifier
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-----------------------------------------------------------------------
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disk device job finished message
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target: Registered job update BMessengers
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message: B_DISK_DEVICE_JOB_FINISHED
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"job_id": B_INT32_TYPE
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"succeeded": B_BOOL_TYPE
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[ "info": B_STRING_TYPE ]
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reply: none (asynchronous message)
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message fields:
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- job_id: Unique job identifier
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- info: Optional description of success or failure
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notes:
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A separate job finished message is needed, as rounding error in
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the computation of job progress may result in multiple
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B_DISK_DEVICE_JOB_UPDATE messages with "progress" fields of 100.
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-----------------------------------------------------------------------
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disk device job simple progress update message
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target: Registered job simple progress update BMessengers
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message: B_DISK_DEVICE_JOB_SIMPLE_PROGRESS
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"job_id": B_INT32_TYPE
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"progress": B_UINT8_TYPE
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"info": B_STRING_TYPE
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reply: none (asynchronous message)
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message fields:
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- job_id: Unique job identifier
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- progress: Percent of job completed (0 to 100)
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- info: Description of current action being taken, i.e.
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"allocating inodes", "writing superblock", etc.
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-----------------------------------------------------------------------
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disk device job extra progress update message
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target: Registered job extra progress update BMessengers
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message: B_DISK_DEVICE_JOB_EXTRA_PROGRESS
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"job_id": B_INT32_TYPE
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"info": B_STRING_TYPE
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reply: none (asynchronous message)
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message fields:
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- job_id: Unique job identifier
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- info: Extended progress info string, i.e. "block 123: found
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invalid inode; fixing"
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-----------------------------------------------------------------------
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