I am working on a project to move various services running directly under FreeBSD 4.8-REL to run under jails on the same servers. Setting up the jails is no problem at all (I can follow manpages), and bringing the jails up using either '/bin/sh /etc/rc' or '/usr/local/sbin/jailer' works as well. Basically, I can get a jail up and running with the desired service.
However, I've found that jails are producing some problems during my testing. 1. On several occassions I have been unable to kill a process in a jail, even with a 'kill -9' from inside or outside the jail as root. europa# ps aux|grep J root 90423 0.0 0.4 1268 920 p0- DJ 10:44PM 0:00.01 /bin/csh europa# kill 90423 europa# ps aux | grep J root 90423 0.0 0.4 1268 920 p0- DJ 10:44PM 0:00.01 /bin/csh europa# kill -9 90423 europa# ps aux | grep J root 90423 0.0 0.4 1268 920 p0- DJ 10:44PM 0:00.01 /bin/csh (If I reboot this machine it will probably hang. See below.) 2. On one occasion (and I haven't attempted to replicate this), I tried a server reboot (with 'reboot') after a jailed process would not die, and the server promptly went offline to never return. I had to have someone hard reset the server. Unfortunately, I am not sure what was on the screen as I wasn't around. I can say though that the server was pingable but not reachable otherwise. 3. If a process is hung, such as /bin/csh, then odd things happen when accessing the location of the jail: # cd /dsk/jails/ # ll total 51684 drwxr-xr-x 13 root wheel 512 Jan 10 22:17 mail1 -rw------- 1 root wheel 52896075 Jan 10 20:47 skel.tgz # cd mail1europa # ll (ls just hangs at this point) I have to kill my ssh session using ~. to get out of this. Note that /dsk/jails/mail1 is not mounted via NFS. It's on the actual local disk. These problems are reproducible across machines running both FreeBSD 4.8-REL and FreeBSD 4.9-STABLE: # uname -v FreeBSD 4.9-STABLE #0: I WANT to use jails to host most of our services, if for no other reason than the increase manageability, but there just seems to be a stability issue here. I realize I will get a lot of "It works for me", but again, these problems are reproducible, so I'm sure someone else has seen it. :) Thoughts on this? _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
