Nginx failed space when upload

I've a problem with my nginx server. He is a storage server, and when i want to upload a file (2,5G) i can show any error on my error.log

2016/02/08 03:26:24 [crit] 7843#0: *1154 pwrite() "/var/lib/nginx/body/0000000388" failed (28: No space left on device), client: 78.229.62.244, server: www1.mywebsite.net, request: "POST /upload/ HTTP/1.1", host: "www1.mywebsite.net", referrer: "http://www.mywebsite.net/"
2016/02/08 03:28:37 [crit] 7843#0: *1476 pwrite() "/var/lib/nginx/body/0000000526" failed (28: No space left on device), client: 78.229.62.244, server: www1.mywebsite.net, request: "POST /upload/ HTTP/1.1", host: "www1.mywebsite.net", referrer: "http://www.mywebsite.net/"
2016/02/08 03:29:45 [crit] 7844#0: *1518 pwrite() "/var/lib/nginx/body/0000000550" failed (28: No space left on device), client: 78.229.62.244, server: www1.mywebsite.net, request: "POST /upload/ HTTP/1.1", host: "www1.mywebsite.net", referrer: "http://www.mywebsite.net/"
2016/02/08 03:32:50 [crit] 7846#0: *1572 pwrite() "/var/lib/nginx/body/0000000588" failed (28: No space left on device), client: 78.229.62.244, server: www1.mywebsite.net, request: "POST /upload/ HTTP/1.1", host: "www1.mywebsite.net", referrer: "http://www.mywebsite.net/"
2016/02/08 03:33:23 [crit] 7846#0: *1579 pwrite() "/var/lib/nginx/body/0000000592" failed (28: No space left on device), client: 78.229.62.244, server: www1.mywebsite.net, request: "POST /upload/ HTTP/1.1", host: "www1.mywebsite.net", referrer: "http://www.mywebsite.net/"

And here is my df -h :
root@www1:/etc/nginx/sites-enabled# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md2 96G 20G 72G 22% /
udev 10M 0 10M 0% /dev
tmpfs 6.3G 33M 6.3G 1% /run
tmpfs 16G 0 16G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/md3 1.7T 285G 1.4T 18% /home


My site config :

upstream mywebsite {
server localhost:8000;
}

location / {
    proxy_pass http://127.0.0.1:8000;
    proxy_pass_header Server;
proxy_redirect off;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Scheme $scheme;
    proxy_set_header REMOTE_ADDR $remote_addr;
proxy_set_header X-Forwarded-Protocol $scheme;
proxy_read_timeout 1200;
}

}


Nginx conf :

root@www1:/etc/nginx# cat nginx.conf
user www-data;
worker_processes 4;
pid /run/nginx.pid;
events {
worker_connections 1024;
use epoll;
multi_accept on;
}
http {

##
# Basic Settings
##

sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
# server_tokens off;

# server_names_hash_bucket_size 64;
# server_name_in_redirect off;

include /etc/nginx/mime.types;
default_type application/octet-stream;

##
# SSL Settings
##

ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
ssl_prefer_server_ciphers on;

##
# Logging Settings
##

access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;

##
# Gzip Settings
##

gzip on;
gzip_disable "msie6";

# gzip_vary on;
# gzip_proxied any;
# gzip_comp_level 6;
# gzip_buffers 16 8k;
# gzip_http_version 1.1;
# gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

##
# Virtual Host Configs
##

include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;

}

A little df -i :

Sorry, here is my df -i.


root@sd-87855:/etc/nginx# df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/sda3 61038592 51533 60987059 1% /
udev 8250054 355 8249699 1% /dev
tmpfs 8260392 457 8259935 1% /run
tmpfs 8260392 1 8260391 1% /dev/shm
tmpfs 8260392 3 8260389 1% /run/lock
tmpfs 8260392 13 8260379 1% /sys/fs/cgroup
/dev/sda2 48960 328 48632 1% /boot
/dev/sda5 594759680 115967 594643713 1% /home

Thanks for your help, have a good day 😉