Ubuntu 12.04 中的 Squid3 logrotate 错误

在 Ubuntu 12.04 服务器中，Squid3 的 logrotate 不起作用。当我注意到分区已从 squid3 日志中填满时，我发现了问题。强制 logrotate 会产生以下错误：

~# logrotate -f /etc/logrotate.d/squid3
error: error running shared prerotate script for '/var/log/squid3/*.log

这是完整的调试输出：

~# logrotate -f /etc/logrotate.d/squid3 -d
reading config file /etc/logrotate.d/squid3
reading config info for /var/log/squid3/*.log

Handling 1 logs

rotating pattern: /var/log/squid3/*.log  forced from command line (2 rotations)
empty log files are rotated, old logs are removed
considering log /var/log/squid3/access.log
  log needs rotating
considering log /var/log/squid3/cache.log
  log needs rotating
rotating log /var/log/squid3/access.log, log->rotateCount is 2
dateext suffix '-20140312'
glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]'
previous log /var/log/squid3/access.log.1 does not exist
renaming /var/log/squid3/access.log.2.gz to /var/log/squid3/access.log.3.gz (rotatecount 2, logstart 1, i 2),
renaming /var/log/squid3/access.log.1.gz to /var/log/squid3/access.log.2.gz (rotatecount 2, logstart 1, i 1),
renaming /var/log/squid3/access.log.0.gz to /var/log/squid3/access.log.1.gz (rotatecount 2, logstart 1, i 0),
rotating log /var/log/squid3/cache.log, log->rotateCount is 2
dateext suffix '-20140312'
glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]'
previous log /var/log/squid3/cache.log.1 does not exist
renaming /var/log/squid3/cache.log.2.gz to /var/log/squid3/cache.log.3.gz (rotatecount 2, logstart 1, i 2),
renaming /var/log/squid3/cache.log.1.gz to /var/log/squid3/cache.log.2.gz (rotatecount 2, logstart 1, i 1),
renaming /var/log/squid3/cache.log.0.gz to /var/log/squid3/cache.log.1.gz (rotatecount 2, logstart 1, i 0),
running prerotate script
running script (multiple) with arg /var/log/squid3/*.log : "
                test ! -x /usr/sbin/sarg-reports || /usr/sbin/sarg-reports
               "
renaming /var/log/squid3/access.log to /var/log/squid3/access.log.1
renaming /var/log/squid3/cache.log to /var/log/squid3/cache.log.1
running postrotate script
running script (multiple) with arg /var/log/squid3/*.log : "
                test ! -e /var/run/squid3.pid || /usr/sbin/squid3 -k rotate
"
removing old log /var/log/squid3/access.log.3.gz
error: error opening /var/log/squid3/access.log.3.gz: file or directory not found

知道可以在这里检查什么吗？谢谢。