On Thu, 2012-08-16 at 15:45 -0400, Will Woods wrote: > > But here's the thing: if anaconda (which doesn't own tty1) can run X, > and X can switch to tty6, then (in theory) anaconda should be able to > make it switch back, right? What happens when starting X is a mystery to me, but switching to new tty is usually not a problem. > > So - what's the actual error message/return code from the ioctl? errno is 22: "Invalid argument". Which seems like problem with the file descriptor (0) used in the ioctl call -- I think it happens because: "So, anaconda runs with a pty as its controlling terminal rather than a real tty; the tmux client has the tty." which means descriptor 0 is not the tty1 anymore. However, I've tried to use the 'chvt' command and it works. So we could: a) move vtActivate to iutil.py and implement it as a chvt call b) try to patch isys.vtActivate to use a new file descriptor (to tty1) Since I'm not sure b) would work, I'm for a). Opinions? > > > As a bonus - here's some more detail about how the tmux setup works, for > reference. > > Early in system startup, anaconda-generator does two things: > > 1) find the actual console device > 2) set up anaconda-shell@.service on tty2 + the first virt console found > of (hvc[01], xvc0, hvsi[012]) > > Normal system startup continues after that, leading up to > anaconda.target. > > Once we've reached anaconda.target, anaconda.service starts tmux. > tmux starts anaconda, a shell, and the log windows, as configured in > tmux.conf: > > +---------------+ > | tmux (server) |------- > +---------------+ \ > / | \ \ > +----------+ +-------+ +-----+ +------+ > | anaconda | | shell | | log | | etc. | .... > +----------+ +-------+ +-----+ +------+ > > After that, anaconda-tmux@.service runs a tmux client on the actual > console device, e.g. tty1: > > +------+ +---------------+ +---------------+ > | tty1 |<--| tmux (client) |-->| tmux (server) |---... > +------+ +---------------+ +---------------+ > / | \ > ... ... ... > > So, anaconda runs with a pty as its controlling terminal rather than a > real tty; the tmux client has the tty. Thanks for the explanation. I believe it would be good to place it somewhere on our FedoraWiki pages together with a list of basic tmux commands/hotkeys. -- Vratislav Podzimek Anaconda Rider | Red Hat, Inc. | Brno - Czech Republic _______________________________________________ Anaconda-devel-list mailing list Anaconda-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/anaconda-devel-list
