[systemd-devel] Unbuffered stderr for my systemd service?

[Lennart Poettering]

On Mon, 15.07.13 16:54, Vivek Goyal (vgoyal at redhat.com) wrote:

> 
> On Mon, Jul 15, 2013 at 10:47:23PM +0200, Lennart Poettering wrote:
> > On Mon, 15.07.13 10:32, Vivek Goyal (vgoyal at redhat.com) wrote:
> > 
> > > CCing Lennart.
> > > 
> > > This is important functionality for us. makeudmpfile utility (utility which 
> > > filters kernel crash dump and shows the progress bar), run in kdump
> > > kernel. For large machines it displays the progress bar in kernel. Right
> > > now all the code runs from initramfs in the context of a service and
> > > we don't get progress messages. Just we get a 100% message at the end.
> > > 
> > > Right now we bypassed journal by sending everything to /dev/console but
> > > it is a generic question that any serivce displaying some kind of
> > > progress bar, how is it handled with current journal mechanism.
> > 
> > if you want to do fancier output then do facnier ouput directly on the
> > console, but do not pumpt this through a log system, that's really not
> > what it is for...
> 
> That's fine. But that means services have to change now. In the
> past stdout/stderr was not logged by default. So fancy outputs could
> go to stdout/stderr without any issues. Now stdout/stderr is being
> logged.

Yupp, this indeed is a change of behaviour due to system. You can revert
to the old behaviour by using StandardOutput=console or so, but you
already figured that out... ;-)

Lennart

-- 
Lennart Poettering - Red Hat, Inc.