wall on shutdown

uml-devel Sven 'Darkman' Michels 2 participants 2 messages Feb 3, 2004 – Feb 11, 2004 User-mode Linux (UML)

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Sven 'Darkman' Michels

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2004-02-03 00:16 UTC #0 lore raw

Hi there,

i've got a small problem here:
i'll use mconsoles cad feature to shutdown my uml. It works mostly like it should. But sometimes the shutdown doesn't send the well known wall msg. I tried multiple kernel configs etc., but it seems to be a race condition. 2 times it worked, 3-4-5-6 time it doesn't work. The UML simply goes down (clean shutdown, all ok execpt the missing wall). Now i added a echo bla | wall; shutdown to the inittab, that 'works' but isn't very beautiful ;)

Someone knows about this issue? I use debian (testing on the host, stable inside the uml, also tested with the image from the page, same problem) and kernel 2.4.24 (host), 2.4.24 with 2.4.23-2um patch.

Regards,
Sven

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Jeff Dike

2004-02-11 01:18 UTC #1 lore raw

Quoted 6 lines · [email protected] said:

But sometimes the shutdown doesn't send the well known wall msg. I tried multiple kernel configs etc., but it seems to be a race condition. 2 times it worked, 3-4-5-6 time it doesn't work. The UML simply goes down (clean shutdown, all ok execpt the missing wall). Now i added a echo bla | wall; shutdown to the inittab, that 'works' but isn't very beautiful ;)

This sounds like a userspace problem. Does wall (or shutdown) have any delays in it which sleep long enough for UML to shut down?

Jeff