Hi Ludo, Thank you!
>/var/run/shepherd/repl is a Unix-domain socket you can connect to (with >socat or whatever) to get a REPL. Thanks! I managed to connect via emacs geiser-connect-local. >I think the very first step, before we can put these debugging helpers >to good use, is to reproduce the problem in a VM. Since I think I know what causes it that should be easy enough. Just start a process that has a writer to a file on disk (keep file open). Then try to remount ro /. The latter will fail. I've just checked my system after I exited the wayland session, and I have the following such processes still left (found via "fuser -ikm /" and then said "N" for all--but remembered the questions): - dannym 2052 1 /gnu/store/3zdc679dcs33yaljrjrkaq1fm7w3sjpy-guile-3.0.9/bin/guile --no-auto-compile /gnu/store/ckghf0bkrj9qrybp1c64q2irv6vx728k-shepherd-1.0.4/bin/shepherd --silent --config /gnu/store/vas8wnnixqxgirfcsccazl0s1c8dq0ni-shepherd.conf - dannym 2629 1 /home/dannym/.guix-home/profile/bin/emacs --daemon - dannym 9797 1 /gnu/store/3zdc679dcs33yaljrjrkaq1fm7w3sjpy-guile-3.0.9/bin/guile --no-auto-compile /gnu/store/ckghf0bkrj9qrybp1c64q2irv6vx728k-shepherd-1.0.4/bin/shepherd --silent -config /gnu/store/vas8wnnixqxgirfcsccazl0s1c8dq0ni-shepherd.conf - dannym 10085 1 /gnu/store/3zdc679dcs33yaljrjrkaq1fm7w3sjpy-guile-3.0.9/bin/guile --no-auto-compile /gnu/store/ckghf0bkrj9qrybp1c64q2irv6vx728k-shepherd-1.0.4/bin/shepherd --silent --config /gnu/store/vas8wnnixqxgirfcsccazl0s1c8dq0ni-shepherd.conf - dannym 20523 2629 00:00:00 [python3] <defunct> Those probably will prevent umounting of /, and remounting ro of /. (Also note the multiple user shepherds, still. That's probably not helping either) >What do you want to replace exactly? The body of the "stop" action of %root-file-system-shepherd-service (eventually :) ) > (struct-set! (lookup-service 'whatever) 8 new-stop-procedure) Thanks! What's the 8? The slot index in the struct?
