On Sat, 31 Dec 2016 18:28:00 +0100 Michael Biebl wrote: [...] > So, I've setup a split-usr VM and I can reproduce the issue.
This is awesome! Thanks for reproducing the issue. At least, this confirms that I was not seeing "ghosts"... ;-) [...] > Some possible ideas > > 1/ document that switching from sysvinit-core to systemd-sysv is best > done by first installing systemd, then booting via init=/bin/systemd on > the kernel-command-line, then making the switch permanent by > uninstalling sysvinit-core and installing systemd-sysv > And if you are using a split-usr setup, doing it this way is mandatory This has been recently done on the Debian wiki page [1] by Felipe. [1] https://wiki.debian.org/systemd But of course, it could be documented somewhere in /usr/share/doc/systemd/ , as well (probably in /usr/share/doc/systemd/README.Debian.gz ...). > > 2/ update umountfs to not umount /usr. But then, something needs to > umount /usr later or at least remount it ro. I don't think we can just > leave /usr mounted without risking an unclean fs. Under systemd, the > umount of /usr is done by /lib/systemd/systemd-shutdown. As I said in another message of this same thread, I think this has already been reported [2]. [2] https://bugs.debian.org/757083 > > 3/ when switching from sysvinit-core to systemd-sysv, keep a copy of the > (old) /sbin/{reboot,halt,poweroff} in /run and use that in > /etc/init.d/reboot This looks like a hack (maybe a clever one, but a hack nevertheless!). > > 4/ move liblz4 to /lib. > > I don't like 4/ very much, as eventually we have to fix this anyway > (thinking of usrmerge). Agreed. > > Thoughts, other ideas? Nothing else... > > Fwiw, I'm personally leaning towards 1/. Makes sense. Of course, you could also help sysvinit maintainers with bug #757083, so that the "migrate under init=/bin/systemd" precaution will eventually become superfluous... -- http://www.inventati.org/frx/ There's not a second to spare! To the laboratory! ..................................................... Francesco Poli . GnuPG key fpr == CA01 1147 9CD2 EFDF FB82 3925 3E1C 27E1 1F69 BFFE
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