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46 lines
2.0 KiB
46 lines
2.0 KiB
What: /sys/block/rnbd<N>/rnbd/unmap_device |
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Date: Feb 2020 |
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KernelVersion: 5.7 |
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Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]> |
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Description: To unmap a volume, "normal" or "force" has to be written to: |
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/sys/block/rnbd<N>/rnbd/unmap_device |
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When "normal" is used, the operation will fail with EBUSY if any process |
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is using the device. When "force" is used, the device is also unmapped |
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when device is in use. All I/Os that are in progress will fail. |
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Example:: |
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# echo "normal" > /sys/block/rnbd0/rnbd/unmap_device |
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What: /sys/block/rnbd<N>/rnbd/state |
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Date: Feb 2020 |
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KernelVersion: 5.7 |
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Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]> |
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Description: The file contains the current state of the block device. The state file |
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returns "open" when the device is successfully mapped from the server |
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and accepting I/O requests. When the connection to the server gets |
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disconnected in case of an error (e.g. link failure), the state file |
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returns "closed" and all I/O requests submitted to it will fail with -EIO. |
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What: /sys/block/rnbd<N>/rnbd/session |
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Date: Feb 2020 |
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KernelVersion: 5.7 |
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Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]> |
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Description: RNBD uses RTRS session to transport the data between client and |
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server. The entry "session" contains the name of the session, that |
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was used to establish the RTRS session. It's the same name that |
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was passed as server parameter to the map_device entry. |
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What: /sys/block/rnbd<N>/rnbd/mapping_path |
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Date: Feb 2020 |
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KernelVersion: 5.7 |
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Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]> |
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Description: Contains the path that was passed as "device_path" to the map_device |
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operation. |
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What: /sys/block/rnbd<N>/rnbd/access_mode |
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Date: Feb 2020 |
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KernelVersion: 5.7 |
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Contact: Jack Wang <[email protected]> Danil Kipnis <[email protected]> |
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Description: Contains the device access mode: ro, rw or migration.
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