projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1d330ec6 MB |
1 | What: /sys/block/dm-<num>/dm/name |
| 2 | Date: January 2009 | |
| 3 | KernelVersion: 2.6.29 | |
| 4 | Contact: dm-devel@redhat.com | |
| 5 | Description: Device-mapper device name. | |
| 6 | Read-only string containing mapped device name. | |
| 7 | Users: util-linux, device-mapper udev rules | |
| 8 | ||
| 9 | What: /sys/block/dm-<num>/dm/uuid | |
| 10 | Date: January 2009 | |
| 11 | KernelVersion: 2.6.29 | |
| 12 | Contact: dm-devel@redhat.com | |
| 13 | Description: Device-mapper device UUID. | |
| 14 | Read-only string containing DM-UUID or empty string | |
| 15 | if DM-UUID is not set. | |
| 16 | Users: util-linux, device-mapper udev rules | |
| 17 | ||
| 18 | What: /sys/block/dm-<num>/dm/suspended | |
| 19 | Date: June 2009 | |
| 20 | KernelVersion: 2.6.31 | |
| 21 | Contact: dm-devel@redhat.com | |
| 22 | Description: Device-mapper device suspend state. | |
| 23 | Contains the value 1 while the device is suspended. | |
| 24 | Otherwise it contains 0. Read-only attribute. | |
| 25 | Users: util-linux, device-mapper udev rules | |
| 0ce65797 MS |
26 | |
| 27 | What: /sys/block/dm-<num>/dm/rq_based_seq_io_merge_deadline | |
| 28 | Date: March 2015 | |
| 29 | KernelVersion: 4.1 | |
| 30 | Contact: dm-devel@redhat.com | |
| 31 | Description: Allow control over how long a request that is a | |
| 32 | reasonable merge candidate can be queued on the request | |
| 33 | queue. The resolution of this deadline is in | |
| 34 | microseconds (ranging from 1 to 100000 usecs). | |
| 35 | Setting this attribute to 0 (the default) will disable | |
| 36 | request-based DM's merge heuristic and associated extra | |
| 37 | accounting. This attribute is not applicable to | |
| 38 | bio-based DM devices so it will only ever report 0 for | |
| 39 | them. | |
| 17e149b8 MS |
40 | |
| 41 | What: /sys/block/dm-<num>/dm/use_blk_mq | |
| 42 | Date: March 2015 | |
| 43 | KernelVersion: 4.1 | |
| 44 | Contact: dm-devel@redhat.com | |
| 45 | Description: Request-based Device-mapper blk-mq I/O path mode. | |
| 46 | Contains the value 1 if the device is using blk-mq. | |
| 47 | Otherwise it contains 0. Read-only attribute. |