Hi, We're seeing one or more Squid crash bugs since we started using COSS heavily.
When I restarted a Squid 2.6.4 server today, it kept on crashing every few minutes, in a constant loop. Upon investigation this proved to be a bug in COSS, during rebuilding of its cache store. This is the backtrace given in cache.log by --enable-backtrace: (squid)[0x428805] (squid)[0x48dde1] (squid)[0x48b78a] (squid)[0x474c36] (squid)[0x427c66] (squid)[0x452352] /lib/libc.so.6(__libc_start_main+0xdb)[0x2aaaab1ca49b] (squid)[0x40417a] addr2line gives: [EMAIL PROTECTED]:~# addr2line -e /usr/sbin/squid 0x428805 /home/mark/wikimedia/squid-2.6.4/src/debug.c:508 0x48dde1 coss/store_dir_coss.c:1256 0x48b78a aufs/async_io.c:315 0x474c36 /home/mark/wikimedia/squid-2.6.4/src/store_dir.c:510 0x427c66 /home/mark/wikimedia/squid-2.6.4/src/comm_epoll.c:179 0x452352 /home/mark/wikimedia/squid-2.6.4/src/main.c:860 Clearing the cache dirs (block devices) with zeros seemed to fix it. I believe there are one or more other crash bugs in COSS, because ever since we started using it, sometimes suddenly a lot of Squids crash at around the same time. This doesn't happen very often, I'd say about once a week. Overall, COSS seems very performant and promising - we're very happy with it. -- Mark Bergsma <[EMAIL PROTECTED]> System & Network Administrator, Wikimedia Foundation
