[squid-users] cpu load boom when rotate the access.log(coss filesystem)

hi all,

   i have used aufs file system for a few days and that is very good.
but i encounter a question when i chang the aufs to coss: the cpu load
is very very high(100% nearly) when i rotate the squid access log file
with command 'squid -k rotate', and can not fall down.

    i google that and find a article about
that:http://www.freeproxies.org/blog/2007/12/29/advanced-squid-issues-upkeep-scripts-and-disk-management/
  ---------------------------
    If you have a script rotate your squid logs (as you should have),
and the squid cache is rebuilding when you are rotating your logs,
squid will not accept any more connections until it has finished
rebuilding the storage.
  ----------------------------
  is this a squid bug?how to fix it?

   thank you.

-- 
Best regards
Felix New