"Serge E. Hallyn" <serge.hal...@canonical.com> writes: > Quoting Trent W. Buck (trentb...@gmail.com): >> A race condition in my containers means that occasionally >> /var/run/screen/ isn't present when startup finishes and I SSH in. >> This results in an error when normal users try to run screen. >> >> I believe the race is against my lxc integration job: >> >> root@imago:~# cat /etc/init/lxc.conf >> start on startup >> task >> script >> [...] >> find /var/run/ -xdev -not -path /var/run/ -delete >> >> The screen-cleanup job is >> >> root@imago:~# grep -v ^$ /etc/init/screen-cleanup.conf >> start on filesystem >> task >> script >> SCREENDIR=/var/run/screen >> if [ -L $SCREENDIR ] || [ ! -d $SCREENDIR ]; then >> rm -f $SCREENDIR >> mkdir $SCREENDIR >> chown root:utmp $SCREENDIR >> fi >> [...] >> >> Obviously the *right* solution is to use a tmpfs for /var/run, as >> non-containerized Ubuntu does. Since this breaks lxc-start's >> reboot/halt (via utmp) detection, I'm looking for the next best >> workaround. >> >> I think this is probably to disable /etc/init/mountall.conf and spoof > > If you're saying that what you need is for this to run before mountall.conf, > then you can make sure that screen-cleanup.conf finishes before mountall > starts by making it > > start on starting mountall > > Then it will finish before mountall really starts.
screen-cleanup creates /var/run/screen -- it needs to run *after* lxc.conf deletes everything in /var/tmp. It (lxc) does that to simulate mounting a tmpfs on /var/run, which is something the mountall job normally does, and what it normally emits a filesystem event after. But with the lxc job above, /var/run is deleted asynchronously from the mountall run, meaning that screen-cleanup can earlier. Changing screen-cleanup to depend on anything mountall emits wouldn't help, AFAICT -- and more to the point, it'd only fix screen-cleanup and not arbitrary other jobs that might be created when a new package is installed. ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
