> > So vzctl is running bash in a pty and talking to it that way?
>
> For the exact details I'll point to the OpenVZ guys :-). It is an OS
> virtualization patch for the kernel. With it you can run virtual servers
> which are isolated from each other.
The answer to my question was "yes."
> What exactly do you want. A full strace report?
That's what I got, and the strace points the finger at vzctl. It looks
like a bug in vzctl that was masked by bash-4.1 and previous versions.
> I'm trying to find the difference between 4.1.9 and 4.2.0 which causes
> this behavior, but that is not simple because I don't know the order and
> which differences I must combine. So this process will take a while...
The difference looks to be that bash-4.1 closed fds 3-20 at startup, and
bash-4.2 sets open fds in that range to close-on-exec. vzctl is careless
with its file descriptors, and bash not closing them results in its
controlling terminal getting messed up.
Michael Kalisz opened a bug report with the openvz group.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
