On 10/28/2011 02:17 PM, Paolo Bonzini wrote:
Yes, it would be better if we could have error output on stderr. Now,
"simple" errors such as a missing image file (or wrong path to the
image) are reported to syslog instead. It could be the source of some
headaches...
Is there a way we could have the child send the error to the parent
over a pipe and have the parent print it on stderr?
A way could be to change the fork() into a separate thread, so that you
can daemonize as soon as you accept the socket rather than having to do
it early.
I tried implementing this, but in general daemonization (which forks and
leave only the children) breaks the threading.
So we could either keep this series (which moves all errors to syslog,
but doesn't otherwise change behavior), or I can finish and post an
alternative series that removes all forking from qemu-nbd *but* changes
behavior in that "qemu-nbd -c" will not daemonize anymore.
Since this is 1.0 after all, I'm slightly more inclined towards the latter.
Opinions? Kevin, Anthony?
Paolo
