Bug 75935

Summary:	systemd-nspawn: mknod() for /dev/console failed: Operation not permitted
Product:	systemd	Reporter:	Joel Teichroeb <joel>
Component:	general	Assignee:	systemd-bugs
Status:	RESOLVED FIXED	QA Contact:	systemd-bugs
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	Proposed patch that seems to fix the issue

Description Joel Teichroeb 2014-03-09 02:16:41 UTC

When I run

systemd-nspawn -D /var/lib/archbuild/extra-x86_64/joel

It often returns
mknod() for /dev/console failed: Operation not permitted

But, it doesn't always return this.

If I add a usleep(10000); at nspawn.c:1822 in version 210, it always fails, but if I instead add it at 2131 it never fails.

I assume there is some kind of race condition happening here. I'll see if I can narrow it down a little more.

Comment 1 Joel Teichroeb 2014-03-09 20:46:55 UTC

Created attachment 95430 [details] [review]
Proposed patch that seems to fix the issue

This patch fixes the issue for me. I've never used eventfds before, so I'm not sure I did it right. I don't see a way to do bidirectional synchronization using a single eventfd, so I created a second one.

Comment 2 Lennart Poettering 2014-03-10 21:10:53 UTC

Fixed in git (as discussed on the ML).

Thanks for the patch!

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