1 What: /sys/bus/xen-backend/devices/*/devtype 2 Date: Feb 2009 3 KernelVersion: 2.6.38 4 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 5 Description: 6 The type of the device. e.g., one of: 'vbd' (block), 7 'vif' (network), or 'vfb' (framebuffer). 8 9 What: /sys/bus/xen-backend/devices/*/nodename 10 Date: Feb 2009 11 KernelVersion: 2.6.38 12 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 13 Description: 14 XenStore node (under /local/domain/NNN/) for this 15 backend device. 16 17 What: /sys/bus/xen-backend/devices/vbd-*/physical_device 18 Date: April 2011 19 KernelVersion: 3.0 20 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 21 Description: 22 The major:minor number (in hexidecimal) of the 23 physical device providing the storage for this backend 24 block device. 25 26 What: /sys/bus/xen-backend/devices/vbd-*/mode 27 Date: April 2011 28 KernelVersion: 3.0 29 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 30 Description: 31 Whether the block device is read-only ('r') or 32 read-write ('w'). 33 34 What: /sys/bus/xen-backend/devices/vbd-*/statistics/f_req 35 Date: April 2011 36 KernelVersion: 3.0 37 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 38 Description: 39 Number of flush requests from the frontend. 40 41 What: /sys/bus/xen-backend/devices/vbd-*/statistics/oo_req 42 Date: April 2011 43 KernelVersion: 3.0 44 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 45 Description: 46 Number of requests delayed because the backend was too 47 busy processing previous requests. 48 49 What: /sys/bus/xen-backend/devices/vbd-*/statistics/rd_req 50 Date: April 2011 51 KernelVersion: 3.0 52 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 53 Description: 54 Number of read requests from the frontend. 55 56 What: /sys/bus/xen-backend/devices/vbd-*/statistics/rd_sect 57 Date: April 2011 58 KernelVersion: 3.0 59 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 60 Description: 61 Number of sectors read by the frontend. 62 63 What: /sys/bus/xen-backend/devices/vbd-*/statistics/wr_req 64 Date: April 2011 65 KernelVersion: 3.0 66 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 67 Description: 68 Number of write requests from the frontend. 69 70 What: /sys/bus/xen-backend/devices/vbd-*/statistics/wr_sect 71 Date: April 2011 72 KernelVersion: 3.0 73 Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 74 Description: 75 Number of sectors written by the frontend. 76 77 What: /sys/bus/xen-backend/devices/*/state 78 Date: August 2018 79 KernelVersion: 4.19 80 Contact: Joe Jin <joe.jin@oracle.com> 81 Description: 82 The state of the device. One of: 'Unknown', 83 'Initialising', 'Initialised', 'Connected', 'Closing', 84 'Closed', 'Reconfiguring', 'Reconfigured'. 85