Добрый день.

Есть сервер с 2 SSD под кеш

Filesystem Size Used Avail Use% Mounted on
/dev/sdb1 210G 167G 44G 80% /ssd2
/dev/sda3 200G 157G 44G 79% /ssd

и следующий конфиг:

proxy_cache_path /ssd levels=1:2 keys_zone=ssd1:2000m
max_size=160000m inactive=7d loader_files=1000 use_temp_path=off;
proxy_cache_path /ssd2 levels=1:2 keys_zone=ssd2:2000m
max_size=170000m inactive=7d loader_files=1000 use_temp_path=off;
split_clients $uri$is_args$args $disk {
56.3% 2;
* 1;
}

server {
....
location / {
proxy_cache ssd$disk;

}
}

Периодически кеш разрастается выше лимита, пока не занимает весь диск.
При рестарте nginx место очищается до максимально разрешенного

nginx -V
nginx version: nginx/1.9.3
built by gcc 4.9.2 (Debian 4.9.2-10)
built with OpenSSL 1.0.2d 9 Jul 2015
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx
--conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error..log
--http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid
--lock-path=/var/run/nginx.lock
--http-client-body-temp-path=/var/cache/nginx/client_temp
--http-proxy-temp-path=/var/cache/nginx/proxy_temp
--http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp
--http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp
--http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx
--with-http_ssl_module --with-http_realip_module
--with-http_addition_module --with-http_sub_module --with-http_dav_module
--with-http_flv_module --with-http_mp4_module --with-http_gunzip_module
--with-http_gzip_static_module --with-http_random_index_module
--with-http_secure_link_module --with-http_stub_status_module
--with-http_auth_request_module --with-threads --with-stream
--with-stream_ssl_module --with-mail --with-mail_ssl_module --with-file-aio
--with-http_spdy_module --with-cc-opt='-g -O2 -fstack-protector-strong
-Wformat -Werror=format-security' --with-ld-opt=-Wl,-z,relro --with-ipv6
--with-http_image_filter_module --with-openssl=/usr/src/openssl-1.0.2d
--
Рустам
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