On 19/03/14 20:56, Michael Dillon wrote: > I've run into a problem with Riak freezing completely on one node > running on Ubuntu 12.04 LTS on a XEN VM (EC2). If I ssh into the node > and run "ps ax" that shell session also freezes. I also tried another > ssh session with "netstat -lnp" to see if I could find the process ID to > kill, but that also froze.
If 'ps' and 'netstat' are hanging then you've got more fundamental problems with the system than just Riak and Erlang. It's almost like a network drive is missing and if that drive is mentioned in your PATH any commands you type hang because the shell is traversing into a missing mount searching for the command. But you say that other commands like 'pstree' and 'kill' work so it's not that. Does 'dmesg' or 'tail /var/log/syslog' show anything interesting? If you can get the PID of any of the hung processes you could try 'strace -f -p PID' to see if they're hanging on a particular system call. Although I suspect the strace will hang as well. I reckon a reboot will probably fix the problem but that won't be much help if the problem happens again. Shane. _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
