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(Updated March 17, 2015, 3:44 p.m.) Review request for mesos, Chi Zhang, Dominic Hamon, Jay Buffington, Jie Yu, and James Peach. Changes ------- Moved code around and cleaned it up, adding further commenting. Made change to check target new root is slave mount so we can pivot on it (see Jie's comments). Bugs: MESOS-2350 https://issues.apache.org/jira/browse/MESOS-2350 Repository: mesos Description ------- Optionally take a path that the launch helper should chroot to before exec'ing the executor. It is assumed that the work directory is mounted to the appropriate location under the chroot. In particular, the path to the executor must be relative to the chroot. Configuration that should be private to the chroot is done during the launch, e.g. mounting proc and statically configuring basic devices. It is assumed that other configuration, e.g., preparing the image, mounting in volumes or persistent resources, is done by the caller. Mounts can be made to the chroot (e.g., updating the volumes or persistent resources) and they will propagate in to the container but mounts made inside the container will not propagate out to the host. It currently assumes that at least {{chroot}}/tmp is writeable and that mount points {{chroot}}/{tmp,dev,proc,sys} exist in the chroot. This is specific to Linux. Diffs (updated) ----- src/slave/containerizer/mesos/launch.hpp 7c8b535746b5ce9add00afef86fdb6faefb5620e src/slave/containerizer/mesos/launch.cpp 2f2d60e2011f60ec711d3b29fd2c157e30c83c34 Diff: https://reviews.apache.org/r/31444/diff/ Testing ------- Manual testing only so far. This is harder to automate because we need a self-contained chroot to execute something in... Suggestions welcome. Thanks, Ian Downes