在我的服务器上，每次重启后 /dev/root 很快就会变满： munin 图表显示
如果我输入
sudo lsof | grep "deleted"
我得到：
nginx 6012 www-data 44u REG 9,1 5917025 264136 /var/lib/nginx/fastcgi/9/06/0000000069 (deleted)
nginx 6015 www-data 47u REG 9,1 11531249 264134 /var/lib/nginx/fastcgi/8/06/0000000068 (deleted)
nginx 6021 www-data 44u REG 9,1 1073744881 140088 /var/lib/nginx/fastcgi/9/00/0000000009 (deleted)
nginx 6021 www-data 47u REG 9,1 1162123 264127 /var/lib/nginx/fastcgi/1/06/0000000061 (deleted)
nginx 6021 www-data 57u REG 9,1 9035129 264131 /var/lib/nginx/fastcgi/6/06/0000000066 (deleted)
nginx 6021 www-data 58u REG 9,1 158384950 264124 /var/lib/nginx/fastcgi/9/05/0000000059 (deleted)
nginx 6021 www-data 64u REG 9,1 253916765 264088 /var/lib/nginx/fastcgi/3/04/0000000043 (deleted)
nginx 6021 www-data 72u REG 9,1 65144633 264039 /var/lib/nginx/fastcgi/8/03/0000000038 (deleted)
nginx 6025 www-data 47u REG 9,1 329180930 263905 /var/lib/nginx/fastcgi/6/04/0000000046 (deleted)
nginx 6028 www-data 43u REG 9,1 703946757 264108 /var/lib/nginx/fastcgi/7/04/0000000047 (deleted)
nginx 6028 www-data 47u REG 9,1 102594620 264035 /var/lib/nginx/fastcgi/2/03/0000000032 (deleted)
nginx 6028 www-data 53u REG 9,1 214559921 264083 /var/lib/nginx/fastcgi/9/03/0000000039 (deleted)
nginx 6028 www-data 59u REG 9,1 175354461 262715 /var/lib/nginx/fastcgi/2/05/0000000052 (deleted)
nginx 6028 www-data 80u REG 9,1 9211086 264089 /var/lib/nginx/fastcgi/4/05/0000000054 (deleted)
nginx 6031 www-data 41u REG 9,1 103114289 264125 /var/lib/nginx/fastcgi/3/06/0000000063 (deleted)
nginx 6031 www-data 47u REG 9,1 144005653 263762 /var/lib/nginx/fastcgi/5/01/0000000015 (deleted)
nginx 6031 www-data 48u REG 9,1 359997771 264084 /var/lib/nginx/fastcgi/3/05/0000000053 (deleted)
nginx 6034 www-data 34u REG 9,1 280936251 140071 /var/lib/nginx/fastcgi/4/00/0000000004 (deleted)
nginx 6034 www-data 57u REG 9,1 119430446 264048 /var/lib/nginx/fastcgi/6/03/0000000036 (deleted)
nginx 6035 www-data 34u REG 9,1 1073740797 263765 /var/lib/nginx/fastcgi/5/02/0000000025 (deleted)
nginx 6035 www-data 65u REG 9,1 67211095 263917 /var/lib/nginx/fastcgi/7/03/0000000037 (deleted)
nginx 6036 www-data 28u REG 9,1 2430656 263530 /var/lib/nginx/fastcgi/2/01/0000000012 (deleted)
nginx 6037 www-data 30u REG 9,1 2749827 264110 /var/lib/nginx/fastcgi/7/05/0000000057 (deleted)
nginx 6038 www-data 55u REG 9,1 34957948 263914 /var/lib/nginx/fastcgi/8/01/0000000018 (deleted)
nginx 6038 www-data 59u REG 9,1 32122186 264086 /var/lib/nginx/fastcgi/2/04/0000000042 (deleted)
nginx 6038 www-data 66u REG 9,1 52218002 264123 /var/lib/nginx/fastcgi/8/05/0000000058 (deleted)
nginx 6038 www-data 72u REG 9,1 54845063 264135 /var/lib/nginx/fastcgi/7/06/0000000067 (deleted)
nginx 6038 www-data 78u REG 9,1 2266978 140079 /var/lib/nginx/fastcgi/6/00/0000000006 (deleted)
nginx 6038 www-data 88u REG 9,1 447169649 140011 /var/lib/nginx/fastcgi/2/00/0000000002 (deleted)
nginx 6038 www-data 130u REG 9,1 121233674 264037 /var/lib/nginx/fastcgi/6/02/0000000026 (deleted)
nginx 6041 www-data 18u REG 9,1 64162555 264038 /var/lib/nginx/fastcgi/0/03/0000000030 (deleted)
nginx 6041 www-data 46u REG 9,1 1726840 264128 /var/lib/nginx/fastcgi/2/06/0000000062 (deleted)
nginx 6042 www-data 18u REG 9,1 10279101 264121 /var/lib/nginx/fastcgi/0/05/0000000050 (deleted)
nginx 6043 www-data 28u REG 9,1 93109363 264119 /var/lib/nginx/fastcgi/9/04/0000000049 (deleted)
nginx 6043 www-data 32u REG 9,1 83795966 264129 /var/lib/nginx/fastcgi/5/06/0000000065 (deleted)
nginx 6045 www-data 10u REG 9,1 308205332 264122 /var/lib/nginx/fastcgi/4/06/0000000064 (deleted)
我该怎么做才能摆脱 /var/lib/nginx/fastcgi/ 中的这些文件？
即使我重新启动 nginx，同样的事情仍然会反复发生。
nginx 版本：nginx/1.8.0
php5-fpm
Ubuntu 服务器 14.04
更新：/var/log/nginx/error/log
2015/11/26 17:05:29 [crit] 6038#0: *25448 writev() "/var/lib/nginx/fastcgi/4/06/0000001064" has written only 6333 of 8184 while reading upstream, client: 81.249.167.106, server: example.com, request: "POST /download/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "example.com", referrer: "http://example.com/"
2015/11/26 17:05:29 [crit] 6043#0: *25310 writev() "/var/lib/nginx/fastcgi/1/06/0000001061" has written only 212 of 8184 while reading upstream, client: 41.107.198.43, server: example.com, request: "POST /download/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "example.com", referrer: "http://example.com/"
2015/11/26 17:05:29 [crit] 6041#0: *24843 writev() "/var/lib/nginx/fastcgi/1/04/0000001041" has written only 1104 of 8184 while reading upstream, client: 45.219.155.237, server: example.com, request: "POST /download/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "example.com", referrer: "http://example.com/"
答案1
我通过将“X-Accel-Buffering：no”（它关闭 fastcgi_buffering 和 proxy_buffering）添加到导致问题（通过 php 发送大文件）的脚本中来解决了我的问题。