All, Over on the -users list (if you haven't been tuned into the thread on creating a Fedora container) we've been boiling out another systemd gotcha.
Basically, lxc-console does not work with systemd because systemd does not start containers on /dev/ttyN. Their documentation indicates that it's because it's in a container. Someone has uncovered the logic (magic cookie) that contradicts that. The logic switch is on the existence of /dev/tty0 (the magic cookie). If it exists, systemd will start gettys on /dev/ttyN (only /dev/tty1 by default) and lxc-console will work. If it doesn't exist, systemd will not start gettys for the vtys and lxc-console will not work. Obvious solution... Create /dev/tty0 and lxc-console will work. Looking at the code, it looks like it's rife with side effects guarded by gremlins there in conf.c. We would need to modify "lxc_create_tty" and "setup_tty" in conf.c to make them 0 based, instead of 1 based, and adjust for an additional tty (lxc.tty + 1). That SHOULD be straight forward. But... Shifting the base of the lxc_tty_info structure could have unforeseen (on my part) side effects which could impact LOTS of things. Maybe it would be easier to "hack it" and create something entirely separate to just create the special case of /dev/tty0. I don't know. So that's what we have to do (AFAICT) to make lxc-console play nicey nicey with systemd and that's what it appears (to me) that we need to do it. But it appears that "here there be dragons". I can do some of the coding but I need to understand some of the implications before I make things fall down go boom. Regards, Mike -- Michael H. Warfield (AI4NB) | (770) 985-6132 | m...@wittsend.com /\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0x674627FF | possible worlds. A pessimist is sure of it!
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