root@AP148:~# ubidetach -p /dev/mtd0
root@AP148:~# ubiformat /dev/mtd0
ubiformat: mtd0 (nand), size 134217728 bytes (128.0 MiB), 1024 eraseblocks of 131072 bytes (128.0 KiB), min. I/O size 2048 bytes
libscan: scanning eraseblock 1023 -- 100 % complete
ubiformat: 1024 eraseblocks have valid erase counter, mean value is 0
ubiformat: formatting eraseblock 1023 -- 100 % complete
root@AP148:~# ubiattach -p /dev/mtd0
UBI device number 0, total 1024 LEBs (130023424 bytes, 124.0 MiB), available 980 LEBs (124436480 bytes, 118.7 MiB), LEB size 126976 bytes (124.0 KiB)
root@AP148:~# ubin
ubinfo ubinize
root@AP148:~# ubinfo /dev/u
ubi0 ubi_ctrl urandom
root@AP148:~# ubinfo /dev/u
ubi0 ubi_ctrl urandom
root@AP148:~# ubinfo /dev/ubi0
ubi0
Volumes count: 0
Logical eraseblock size: 126976 bytes, 124.0 KiB
Total amount of logical eraseblocks: 1024 (130023424 bytes, 124.0 MiB)
Amount of available logical eraseblocks: 980 (124436480 bytes, 118.7 MiB)
Maximum count of volumes 128
Count of bad physical eraseblocks: 0
Count of reserved physical eraseblocks: 40
Current maximum erase counter value: 2
Minimum input/output unit size: 2048 bytes
Character device major/minor: 249:0
root@AP148:~# ubimkvol --help
ubimkvol version 1.5.2 - a tool to create UBI volumes.
Usage: ubimkvol <UBI device node file name> [-h] [-a <alignment>] [-n <volume ID>] [-N <name>]
[-s <bytes>] [-S <LEBs>] [-t <static|dynamic>] [-V] [-m]
[--alignment=<alignment>][--vol_id=<volume ID>] [--name=<name>]
[--size=<bytes>] [--lebs=<LEBs>] [--type=<static|dynamic>] [--help]
[--version] [--maxavsize]
Example: ubimkvol /dev/ubi0 -s 20MiB -N config_data - create a 20 Megabytes volume
named "config_data" on UBI device /dev/ubi0.
-a, --alignment=<alignment> volume alignment (default is 1)
-n, --vol_id=<volume ID> UBI volume ID, if not specified, the volume ID
will be assigned automatically
-N, --name=<name> volume name
-s, --size=<bytes> volume size volume size in bytes, kilobytes (KiB)
or megabytes (MiB)
-S, --lebs=<LEBs count> alternative way to give volume size in logical
eraseblocks
-m, --maxavsize set volume size to maximum available size
-t, --type=<static|dynamic> volume type (dynamic, static), default is dynamic
-h, -?, --help print help message
-V, --version print program version
root@AP148:~# ubimkvol /dev/ubi0 -N kernel -m 100M
ubimkvol: error!: more then one UBI device specified (use -h for help)
root@AP148:~# ubimkvol /dev/ubi0 -N kernel -s 100M
bad size specifier: "M" - should be 'KiB', 'MiB' or 'GiB'
ubimkvol: error!: bad volume size: "100M"
root@AP148:~# ubimkvol /dev/ubi0 -N kernel -s 100MiB
Volume ID 0, size 826 LEBs (104882176 bytes, 100.0 MiB), LEB size 126976 bytes (124.0 KiB), dynamic, name "kernel", alignment 1
root@AP148:~# ubimkvol /dev/ubi0 -N rootfs -m
Set volume size to 19554304
Volume ID 1, size 154 LEBs (19554304 bytes, 18.6 MiB), LEB size 126976 bytes (124.0 KiB), dynamic, name "rootfs", alignment 1
root@AP148:~# ubinfo /dev/
console loop5 mtd12ro mtd6 mtdblock12 network_throughput ttyS0
cpu_dma_latency loop6 mtd13 mtd6ro mtdblock13 null ttyS1
full loop7 mtd13ro mtd7 mtdblock2 port ubi0
hwrng memory_bandwidth mtd1ro mtd7ro mtdblock3 ppp ubi0_0
kmsg mtd0 mtd2 mtd8 mtdblock4 ptmx ubi0_1
log mtd0ro mtd2ro mtd8ro mtdblock5 ptp0 ubi_ctrl
loop-control mtd1 mtd3 mtd9 mtdblock6 ptp1 urandom
loop0 mtd10 mtd3ro mtd9ro mtdblock7 pts/ watchdog
loop1 mtd10ro mtd4 mtdblock0 mtdblock8 random watchdog0
loop2 mtd11 mtd4ro mtdblock1 mtdblock9 shm/ zero
loop3 mtd11ro mtd5 mtdblock10 net/ tty
loop4 mtd12 mtd5ro mtdblock11 network_latency ttyMSM0
root@AP148:~# ubinfo /dev/ubi0
ubi0
Volumes count: 2
Logical eraseblock size: 126976 bytes, 124.0 KiB
Total amount of logical eraseblocks: 1024 (130023424 bytes, 124.0 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: 40
Current maximum erase counter value: 3
Minimum input/output unit size: 2048 bytes
Character device major/minor: 249:0
Present volumes: 0, 1
root@AP148:~# ls /dev/ubi
ubi0 ubi0_0 ubi0_1 ubi_ctrl
root@AP148:~# ls /dev/ubi
ubi0 ubi0_0 ubi0_1 ubi_ctrl
root@AP148:~# ls /dev/ubi
root@AP148:~# mount -t ubifs /dev/ubi0_1 /mnt/
root@AP148:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 9472 9472 0 100% /rom
tmpfs 240248 104 240144 0% /tmp
/dev/mtdblock13 15296 592 14704 4% /overlay
overlayfs:/overlay 15296 592 14704 4% /
tmpfs 512 0 512 0% /dev
/dev/ubi0_1 15824 20 14960 0% /mnt
root@AP148:~# cd /mnt/
root@AP148:/mnt# ls
root@AP148:/mnt# df -h
Filesystem Size Used Available Use% Mounted on
/dev/root 9.3M 9.3M 0 100% /rom
tmpfs 234.6M 104.0K 234.5M 0% /tmp
/dev/mtdblock13 14.9M 592.0K 14.4M 4% /overlay
overlayfs:/overlay 14.9M 592.0K 14.4M 4% /
tmpfs 512.0K 0 512.0K 0% /dev
/dev/ubi0_1 15.5M 20.0K 14.6M 0% /mnt
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