On Wed, Aug 6, 2014 at 6:48 AM, William Dauchy <wdau...@gmail.com> wrote: > On Tue, Jul 29, 2014 at 9:51 PM, Eric Blake <ebl...@redhat.com> wrote: >> The output is on qemu's stderr. You are in control of what that stderr is. > > I don't get why we can configure > -D /path/to/unique/file/name.log > > but we also have to redirect stderr (I didn't checked if the daemonize > option was closing it). What's the purpose of this logfile option? >
Well -D will log to file only loggable (i.e. qemu_log()) information (which has all sorts of options and switches). Stderr, is a little more static and should in theory be limited to genuine errors. But if you want a combined log of both you can simply omit -D to default qemu_log output to stderr. This gives you a combined log that you can redirect anywhere. To be honest, this is what I do as a matter of course (2> foo rather than -D foo). There's plently of tree wide work to clean up the cases where stderr is used where qemu_log should be. If you are finding that log information is going to stderr instead of the log, patches would be welcome. Regards, Peter > -- > William >
