[systemd-devel] Console screen blanks while long running service executes

[Harry Goldschmitt]

I just modified my grub kernel command line to add the consoleblank=0 parameter. That isn't the problem. First consoleblank is the kernel screensaver and according to the documentation it kicks in after 15 minutes by default. What I'm doing for testing is:
1) systemctl set-default foo.target
2) foo.target.wants/foo.service
3) foo.service invokes /mydir/foo.sh
4) /mydir/foo.sh consists of
echo "foo.sh starting to sleep"
logger  "foo.sh starting to sleep"
sleep 10
echo "foo.sh after sleep"
logger "foo.sh after sleep"
systemctl isolate multi-user.target

What I see is a few kernel driver start up messages. Then the console screen blanks for about 10 seconds. Then multi-user boot completes. What I'm hoping to see is:
foo.sh starting to sleep
foo.sh after sleep

-----Original Message-----
From: systemd-devel [mailto:systemd-devel-bounces at lists.freedesktop.org] On Behalf Of Tomasz Torcz
Sent: Wednesday, August 12, 2015 12:26 PM
To: systemd-devel at lists.freedesktop.org
Subject: Re: [systemd-devel] Console screen blanks while long running service executes

On Wed, Aug 12, 2015 at 06:41:35PM +0000, Harry Goldschmitt wrote:
> I have a target that runs a service during boot on CentOS 7.1. The 
> service takes a minimum of 30 sec. to run and a maximum of 15 min. 
> While it's running, the console screen blanks. Before my service runs 
> I see the expected roll call of services running with [OK], etc. After 
> my service completes, the console comes back to life. My service uses 
> echo to output progress messages that show up in the journal. Is there 
> a way to keep the console from blanking?  >

  Put "consoleblank=0" in the kernel command line.

-- 
Tomasz Torcz               "Never underestimate the bandwidth of a station
xmpp: zdzichubg at chrome.pl    wagon filled with backup tapes." -- Jim Gray

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