USB stops working after copy a large file

chenkongjun · ‎09-09-2014

Hi,

I plugin a USB memory on i.MX257-based board. It is detected and seems to work.

After mount USB to /mnt/usb,I start to test by loop copy a testfile from /mnt/usb folder

to /mnt/usb/temp folder.when the testfile size is over than 1M bytes,I/O error occurs

and it stops working(unmounts itself) after a while.

by the way,the linux kernel version is 2.6.28.

See the attached error log for more information. Appreciate any help to solve this trouble

Best Regards

Yuri · ‎09-12-2014

To be fully on safe side, please double check if oscillator provides correct frequency.

Sometimes it affects large file transfer, since USB is frequency sensitive.

~Yuri.

fabio_estevam · ‎09-10-2014

Yes, I would also recommend you using a more recent kernel.

You can try the latest stable 3.16.2.

igorpadykov · ‎09-10-2014

Hi chen

first I would highly suggest to move to more new kernel,

since it has better memory management

Second from log seems that this may be caused also by hardware, since

big size data transfer causes big noise on system, so additionally I would suggest to

test memory. Just for testing you may wish to decrease operating frequency (procesor and

memory) and test if issue will persist. Probably you can change memory stick, use

well known vendor.

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------

chenkongjun · ‎09-10-2014

Hi igorpadykov

thank you for the reply.

In this project ,we have finished a lot of interface test except USB.

so recompile kernel is not the best way.

in order to find out the reason,i'll try to test by using a more recent kernel