Problem with uploading large video files - IO/HTTP error

[tophi]

Hello,
I recently moved one of my projects to new server using NGINX + php-fpm
.The problem is, that when I upload ~50 MB video it works well, but when
I try to upload bigger file - it gives me IO or sometimes HTTP error.

php.ini
max_execution_time = 900
max_input_time = 900
memory_limit = 2048M
post_max_size = 2048M
upload_max_filesize = 2048M
file_uploads = On

nginx.conf
  client_max_body_size 2048m;
  client_body_timeout       900;
  client_header_timeout     900;


my php-fpm logs are empy, my  nginx error log too
Thanks

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,226854,226854#msg-226854