On Mon, Dec 2, 2013 at 10:34 PM, Jc García <jyo.gar...@gmail.com> wrote: > 2013/12/2 William Kenworthy <bi...@iinet.net.au> >> >> You are looking far too deep .... >> >> >> just rsync -avP to /newusr > > +1 > I have done this more or less the same way >> >> reboot to livecd >> >> rsync again with --delete to update ... takes a only few seconds this >> time - minimal downtime :) >> mv /usr /oldusr >> mv /newusr /usr >> reboot > > > Let's make this thread more interesting, would it be possible to do > this without a reboot? ie: going single user mode, kill anything that > might still be running from usr, umount /usr, mount it to /mnt, rsync > -avP to usr, going again into runlevel 3 or 5. > Obviously not possible if running systemd.
I'm not so sure it's not possible. Perhaps it's even easier. If you do "systemctl isolate emergency.target" then remount / read/write, do the move, and then again isolate multi-user.target or graphical.target, I think is possible. I will try on a virtual machine; is an interesting question. You would need to use absolute pathnames when actually performing the move, but I think is possible. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
