1 What: /sys/block/rnbd<N>/rnbd/unmap_ 1 What: /sys/block/rnbd<N>/rnbd/unmap_device
2 Date: Feb 2020 2 Date: Feb 2020
3 KernelVersion: 5.7 3 KernelVersion: 5.7
4 Contact: Jack Wang <jinpu.wang@cloud.ion 4 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
5 Description: To unmap a volume, "normal" or 5 Description: To unmap a volume, "normal" or "force" has to be written to:
6 /sys/block/rnbd<N>/rnbd/unmap_ 6 /sys/block/rnbd<N>/rnbd/unmap_device
7 7
8 When "normal" is used, the ope 8 When "normal" is used, the operation will fail with EBUSY if any process
9 is using the device. When "fo 9 is using the device. When "force" is used, the device is also unmapped
10 when device is in use. All I/ 10 when device is in use. All I/Os that are in progress will fail.
11 11
12 Example:: 12 Example::
13 13
14 # echo "normal" > /sys/block 14 # echo "normal" > /sys/block/rnbd0/rnbd/unmap_device
15 15
16 What: /sys/block/rnbd<N>/rnbd/state 16 What: /sys/block/rnbd<N>/rnbd/state
17 Date: Feb 2020 17 Date: Feb 2020
18 KernelVersion: 5.7 18 KernelVersion: 5.7
19 Contact: Jack Wang <jinpu.wang@cloud.ion 19 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
20 Description: The file contains the current 20 Description: The file contains the current state of the block device. The state file
21 returns "open" when the device 21 returns "open" when the device is successfully mapped from the server
22 and accepting I/O requests. Wh 22 and accepting I/O requests. When the connection to the server gets
23 disconnected in case of an err 23 disconnected in case of an error (e.g. link failure), the state file
24 returns "closed" and all I/O r 24 returns "closed" and all I/O requests submitted to it will fail with -EIO.
25 25
26 What: /sys/block/rnbd<N>/rnbd/sessio 26 What: /sys/block/rnbd<N>/rnbd/session
27 Date: Feb 2020 27 Date: Feb 2020
28 KernelVersion: 5.7 28 KernelVersion: 5.7
29 Contact: Jack Wang <jinpu.wang@cloud.ion 29 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
30 Description: RNBD uses RTRS session to tran 30 Description: RNBD uses RTRS session to transport the data between client and
31 server. The entry "session" c 31 server. The entry "session" contains the name of the session, that
32 was used to establish the RTRS 32 was used to establish the RTRS session. It's the same name that
33 was passed as server parameter 33 was passed as server parameter to the map_device entry.
34 34
35 What: /sys/block/rnbd<N>/rnbd/mappin 35 What: /sys/block/rnbd<N>/rnbd/mapping_path
36 Date: Feb 2020 36 Date: Feb 2020
37 KernelVersion: 5.7 37 KernelVersion: 5.7
38 Contact: Jack Wang <jinpu.wang@cloud.ion 38 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
39 Description: Contains the path that was pas 39 Description: Contains the path that was passed as "device_path" to the map_device
40 operation. 40 operation.
41 41
42 What: /sys/block/rnbd<N>/rnbd/access 42 What: /sys/block/rnbd<N>/rnbd/access_mode
43 Date: Feb 2020 43 Date: Feb 2020
44 KernelVersion: 5.7 44 KernelVersion: 5.7
45 Contact: Jack Wang <jinpu.wang@cloud.ion 45 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
46 Description: Contains the device access mod 46 Description: Contains the device access mode: ro, rw or migration.
47 47
48 What: /sys/block/rnbd<N>/rnbd/resize 48 What: /sys/block/rnbd<N>/rnbd/resize
49 Date: Feb 2020 49 Date: Feb 2020
50 KernelVersion: 5.7 50 KernelVersion: 5.7
51 Contact: Jack Wang <jinpu.wang@cloud.ion 51 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
52 Description: Write the number of sectors to 52 Description: Write the number of sectors to change the size of the disk.
53 53
54 What: /sys/block/rnbd<N>/rnbd/remap_ 54 What: /sys/block/rnbd<N>/rnbd/remap_device
55 Date: Feb 2020 55 Date: Feb 2020
56 KernelVersion: 5.7 56 KernelVersion: 5.7
57 Contact: Jack Wang <jinpu.wang@cloud.ion 57 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
58 Description: Remap the disconnected device 58 Description: Remap the disconnected device if the session is not destroyed yet.
59 59
60 What: /sys/block/rnbd<N>/rnbd/nr_pol 60 What: /sys/block/rnbd<N>/rnbd/nr_poll_queues
61 Date: Feb 2020 61 Date: Feb 2020
62 KernelVersion: 5.7 62 KernelVersion: 5.7
63 Contact: Jack Wang <jinpu.wang@cloud.ion 63 Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
64 Description: Contains the number of poll-mo 64 Description: Contains the number of poll-mode queues
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.