Additional comments specific to the pivot root issue... Adding the developers list as well, since this is a development issue...
On Sat, 2012-11-03 at 12:01 +0100, Peter Simons wrote: > Hi guys, > I've been using lxc for a while now, and it's a great tool. Thank you > very much for the time and effort you have been dedicating to the > development of that software! > My Linux distribution (NixOS) is about to switch from upstart to > systemd, and it this switch in the host system is going to break all my > containers. It appears this is a well known problem that's been reported > at > > http://sourceforge.net/tracker/?func=detail&aid=3559833&group_id=163076&atid=826303 > and > https://github.com/lxc/lxc/issues/4. > Now, I wonder what the status of this issue is. Is it clear how that > problem can be remedied? Is there maybe a patch that fixes this problem? > Does anyone know a work-around that I could use to keep my containers > running when that switch to systemd occurs on the host system? This was from another threat with the systemd guys. On Mon, 2012-10-22 at 16:11 +0200, Lennart Poettering wrote: > Note that there are reports that LXC has issues with the fact that > newer > systemd enables shared mount propagation for all mounts by default > (this > should actually be beneficial for containers as this ensures that new > mounts appear in the containers). LXC when run on such a system fails > as > soon as it tries to use pivot_root(), as that is incompatible with > shared mount propagation. The needs fixing in LXC: it should use > MS_MOVE > or MS_BIND to place the new root dir in / instead. A short term > work-around is to simply remount the root tree to private before > invoking LXC. > > Lennart > -- > Lennart Poettering - Red Hat, Inc. So there you have a suggested workaround for the shared mount propagation problem, which is what you are referring to. ITMT... Daniel, Serge? Any thoughts on those comments vis-a-vis the pivot function and using MS_MOVE or MS_BIND instead? IIRC, we switched to pivot_root() years ago to deal with some other issues that were plaguing us. > Take care, > Peter > > > ------------------------------------------------------------------------------ > LogMeIn Central: Instant, anywhere, Remote PC access and management. > Stay in control, update software, and manage PCs from one command center > Diagnose problems and improve visibility into emerging IT issues > Automate, monitor and manage. Do more in less time with Central > http://p.sf.net/sfu/logmein12331_d2d > _______________________________________________ > Lxc-users mailing list > lxc-us...@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/lxc-users > -- Michael H. Warfield (AI4NB) | (770) 985-6132 | m...@wittsend.com /\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0x674627FF | possible worlds. A pessimist is sure of it!
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