On 09/22/2010 09:37 PM, Nirmal Guhan wrote: > On Wed, Sep 22, 2010 at 1:14 AM, Daniel Lezcano<[email protected]> > wrote: > >> On 09/22/2010 09:50 AM, Nirmal Guhan wrote: >> >>> On Wed, Sep 22, 2010 at 12:36 AM, Daniel Lezcano<[email protected]> >>> wrote: >>> >>> >>>> On 09/22/2010 06:25 AM, Nirmal Guhan wrote: >>>> >>>> >>>>> Hi, >>>>> >>>>> When starting a container, am getting an error as : >>>>> >>>>> lxc-start: Device or resource busy - could not unmount old rootfs >>>>> lxc-start: failed to pivot_root to '/lxc/f12' >>>>> lxc-start: failed to set rootfs for 'f12connew' >>>>> lxc-start: failed to setup the container >>>>> >>>>> My config is very simple : >>>>> lxc.utsname = f12connew >>>>> lxc.rootfs = /lxc/f12 >>>>> lxc.mount = /lxc/f12.fstab >>>>> lxc.tty = 3 >>>>> >>>>> Am running 2.6.32.16 kernel. Am able to start the same container while >>>>> running the same kernel with only one difference - the one that does >>>>> NOT work has CONFIG_MACVLAN=y but I doubt if that is the issue. >>>>> >>>>> Please help. >>>>> >>>>> >>>>> >>>> What is the lxc version ? >>>> >>>> >>>> >>> lxc version: 0.6.5. Please note that the lxc version is same across >>> the working and non-working kernels. >>> >>> >> Mmh, this problem was solved with the 0.7.2 version I think, is it possible >> to try it ? >> >> > It works. Thanks. Can I understand the reason for 0.6.5 error? It > didn't show up always. > I don't remember exactly why but that was happening when the rootfs was on the same fs than the host rootfs and this one is mounted with a specific option (as far as I remember). The changes made around the pivot_root solved the problem. In any case, if the umount of the oldrootfs fails, umount --force and umount --detach is done ensuring the old rootfs won't be reachable within the container.
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