Remote I/O error from f3probe and f3write

[awik32]

f3probe reports an error immediately upon starting it:

# f3probe /dev/sdc
F3 probe 8.0
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

WARNING: Probing normally takes from a few seconds to 15 minutes, but
         it can take longer. Please be patient.

f3probe: read_all(): unexpected error code from read(2) = 121: Remote I/O error

f3write reports the error after writing about 1480 files:

$ sudo f3write /mnt/usb
F3 write 8.0
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

Free space: 11.44 TB
Creating file 1.h2w ... OK!                             
Creating file 2.h2w ... OK!                             
Creating file 3.h2w ... OK!                             
Creating file 4.h2w ... OK!                             
....
Creating file 1476.h2w ... OK!                              
Creating file 1477.h2w ... OK!                              
Creating file 1478.h2w ... OK!                              
Creating file 1479.h2w ... Write failure: Remote I/O error  
Creating file 1480.h2w ... 12.62% -- 12.26 MB/s -- 241:10:57f3write: libflow.h:89: get_rem_chunk_size: Assertion `fw->blocks_per_delay > fw->processed_blocks' failed.
Aborted

Regards,
Albert.

[AltraMayor]

Could you run f3read on the files that f3write created? This will give us the scale of the problem.

Do you have a link that shows a picture and description of your drive?

[awik32]

I started the f3read process. The speed is a little over 18 MB/s.

More information (but not much) on the drive is at:
https://vi.aliexpress.com/item/1005005879228497.html

Mine is a 12 TB silver variant.

[awik32]

It's worse than I thought:

# f3read /mnt/usb        
F3 read 8.0
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

                  SECTORS      ok/corrupted/changed/overwritten
Validating file 1.h2w ... 2097152/        0/      0/      0
Validating file 2.h2w ... 2097152/        0/      0/      0
Validating file 3.h2w ... 2097152/        0/      0/      0
Validating file 4.h2w ... 2097152/        0/      0/      0
Validating file 5.h2w ... 2097152/        0/      0/      0
Validating file 6.h2w ... 2097152/        0/      0/      0
Validating file 7.h2w ... 2097152/        0/      0/      0
....
Validating file 58.h2w ... 2097152/        0/      0/      0
Validating file 59.h2w ... 2097152/        0/      0/      0
Validating file 60.h2w ...  453592/  1643560/      0/      0
Validating file 61.h2w ...       0/  2097152/      0/      0
Validating file 62.h2w ...       0/  2097152/      0/      0
Validating file 63.h2w ...       0/  2097152/      0/      0
Validating file 64.h2w ...       0/  2097152/      0/      0
Validating file 65.h2w ...       0/  2097152/      0/      0
...

[awik32]

f3read finished. This is the rest of the output (see above for the start):

...
Validating file 1475.h2w ...       0/  2097152/      0/      0
Validating file 1476.h2w ...       0/  2097152/      0/      0
Validating file 1477.h2w ...       0/  2097152/      0/      0
Validating file 1478.h2w ...       0/  2097152/      0/      0
Validating file 1479.h2w ...       0/        0/      0/      0 - NOT fully read due to "Input/output error"
Validating file 1480.h2w ...       0/        0/      0/      0

  Data OK: 59.22 GB (124185560 sectors)
Data LOST: 1.39 TB (2975405096 sectors)
	       Corrupted: 1.39 TB (2975405096 sectors)
	Slightly changed: 0.00 Byte (0 sectors)
	     Overwritten: 0.00 Byte (0 sectors)
WARNING: Not all data was read due to I/O error(s)
Average reading speed: 16.08 MB/s

[AltraMayor]

You can likely partition this drive with a single 59GB partition at the beginning of the drive, format it, and use this limited capacity. But I recommend this only if you are stuck with the drive; if not, please return it and get your money back.

This drive falls too short of its description. Not only is it missing too much of its announced capacity, but its reading speed (16MB/s) is way less than what it advertises (i.e., 520MB/s).

[awik32]

I've filed a complaint to AliExpress.