Greg, Kay, >> Is that a problem for UML somehow?
The login on ttyX takes 30+ seconds. This very ugly and mostly wrong hack makes the login fast again: mount -o bind /sys/class/tty/console/ /sys/class/tty/tty0/ /sys/class/tty/console/active exists and contains "tty0"... > In general, the "crippled" environments might not really the right > thing too run full-blown user login managers like logind. > > The main systemd 'init' will not have any problems with that, but > running logind might not really work out under UML. > > Depending how far full-OS support in UML should go, logind should > either not run inside UML, or if, UML should provide the needed bits > for in virtual consoles. Any x86 distribution works fine in UML. If this will be no longer true due to systemd then better no systemd developer ever crosses my way. ;-) > If it is not to be solved otherwise, maybe logind needs more > VT-avoiding logic like this: > http://cgit.freedesktop.org/systemd/systemd/commit/?id=addedec48ba0ffc4472ef6d3b5a45c9d4239f1cd Yeah, would make sense. Many systems don't have CONFIG_VT set. One good thing is that systemd seems to uncover a nasty bug in UML's console driver. A login on tty0 crashes UML. UML's console driver (arch/um/drivers/line.c) implements tty_operations. The crash happens because the tty subsystem calls the driver's close() function and later write_room() or chars_in_buffer(). write_room() and chars_in_buffer() fail badly because close() already cleaned up the driver's private data... Greg, is UML's assumption wrong that after closing the tty no call to write_room() or chars_in_buffer() can happen? I have no idea why systemd is able to trigger this, UML's console driver is old and has always worked quite well. -- Thanks, //richard ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
