[squid-users] With Rock storage, it seems an object can not be copied from disk cache to memory cache after a restart

[duanyao]

Hi,

I have an issue: if I restart Squid (with Rock storage), I can no longer 
get TCP_MEM_HIT for any object got cached before that restart -- I 
always get TCP_HIT instead.


Steps to reproduce:

1) Stop squid.

2) Remove & create a new Rock storage, start Squid.

3) Get a url via Squid, e.g.:

   curl -o /dev/null -v -x localhost:3128 
http://cdn.bootcss.com/font-linux/0.9/font-linux.woff

   Suppose Squid is running on localhost:3128.

   This should get a TCP_MISS.

4) Repeat step 3, and this should get a TCP_MEM_HIT.

5) Stop & start Squid.

6) Repeat step 3 for more than 2 times, and all the results are TCP_HIT, 
however I expect the 2nd and following rounds should be TCP_MEM_HIT.


So it seems an object can never be copied from disk cache to memory 
cache after a restart. Is this normal?

I tested 3.5.27 and master branch in github, the results are same. The 
configuration file is attached.


Thanks.

Duan, Yao

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workers 2

shutdown_lifetime 3 second

acl localnet src 10.0.0.0/8	# RFC1918 possible internal network
acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
acl localnet src 192.168.0.0/16	# RFC1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

acl SSL_ports port 443
acl Safe_ports port 80		# http
acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https
acl Safe_ports port 70		# gopher
acl Safe_ports port 210		# wais
acl Safe_ports port 1025-65535	# unregistered ports
acl Safe_ports port 280		# http-mgmt
acl Safe_ports port 488		# gss-http
acl Safe_ports port 591		# filemaker
acl Safe_ports port 777		# multiling http
acl CONNECT method CONNECT

http_access deny !Safe_ports

http_access deny CONNECT !SSL_ports

acl PURGE method PURGE
http_access allow PURGE localhost
http_access deny PURGE

http_access allow localhost manager
http_access deny manager

http_access allow localnet
http_access allow localhost

http_access deny all

http_port 3128

cache_dir rock /home/duanyao/project/proxy/squid-root/var/cache/squid/rock 10

cache_effective_user duanyao