root@OpenWrt:~# ubinfo -a
UBI version:                    1
Count of UBI devices:           1
UBI control device major/minor: 10:63
Present UBI devices:            ubi0

ubi0
Volumes count:                           6
Logical eraseblock size:                 126976 bytes, 124.0 KiB
Total amount of logical eraseblocks:     1000 (126976000 bytes, 121.0 MiB)
Amount of available logical eraseblocks: 0 (0 bytes)
Maximum count of volumes                 128
Count of bad physical eraseblocks:       0
Count of reserved physical eraseblocks:  20
Current maximum erase counter value:     34
Minimum input/output unit size:          2048 bytes
Character device major/minor:            248:0
Present volumes:                         0, 1, 2, 3, 4, 5

Volume ID:   0 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        9 LEBs (1142784 bytes, 1.0 MiB)
State:       OK
Name:        ubootenv
Character device major/minor: 248:1
-----------------------------------
Volume ID:   1 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        9 LEBs (1142784 bytes, 1.0 MiB)
State:       OK
Name:        ubootenv2
Character device major/minor: 248:2
-----------------------------------
Volume ID:   2 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        74 LEBs (9396224 bytes, 8.9 MiB)
State:       OK
Name:        recovery
Character device major/minor: 248:3
-----------------------------------
Volume ID:   3 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        67 LEBs (8507392 bytes, 8.1 MiB)
State:       OK
Name:        boot_backup
Character device major/minor: 248:4
-----------------------------------
Volume ID:   4 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        81 LEBs (10285056 bytes, 9.8 MiB)
State:       OK
Name:        fit
Character device major/minor: 248:5
-----------------------------------
Volume ID:   5 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        736 LEBs (93454336 bytes, 89.1 MiB)
State:       OK
Name:        rootfs_data
Character device major/minor: 248:6