Zhitao Li created MESOS-5028: -------------------------------- Summary: Copy provisioner does not work for docker image layers with dangling symlink Key: MESOS-5028 URL: https://issues.apache.org/jira/browse/MESOS-5028 Project: Mesos Issue Type: Bug Components: containerization Reporter: Zhitao Li Assignee: Jie Yu
I'm trying to play with the new image provisioner on our custom docker images, but one of layer failed to get copied, possibly due to a dangling symlink. Error log with Glog_v=1: {quote} I0324 05:42:48.926678 15067 copy.cpp:127] Copying layer path '/tmp/mesos/store/docker/layers/5df0888641196b88dcc1b97d04c74839f02a73b8a194a79e134426d6a8fcb0f1/rootfs' to rootfs '/var/lib/mesos/provisioner/containers/5f05be6c-c970-4539-aa64-fd0eef2ec7ae/backends/copy/rootfses/507173f3-e316-48a3-a96e-5fdea9ffe9f6' E0324 05:42:49.028506 15062 slave.cpp:3773] Container '5f05be6c-c970-4539-aa64-fd0eef2ec7ae' for executor 'test' of framework 75932a89-1514-4011-bafe-beb6a208bb2d-0004 failed to start: Collect failed: Collect failed: Failed to copy layer: cp: cannot overwrite directory ‘/var/lib/mesos/provisioner/containers/5f05be6c-c970-4539-aa64-fd0eef2ec7ae/backends/copy/rootfses/507173f3-e316-48a3-a96e-5fdea9ffe9f6/etc/apt’ with non-directory {quote} Content of _/tmp/mesos/store/docker/layers/5df0888641196b88dcc1b97d04c74839f02a73b8a194a79e134426d6a8fcb0f1/rootfs/etc/apt_ points to a non-existing absolute path (cannot provide exact path but it's a result of us trying to mount apt keys into docker container at build time). I believe what happened is that we executed a script at build time, which contains equivalent of: {quote} rm -rf /etc/apt/* && ln -sf /build-mount-point/ /etc/apt {quote} -- This message was sent by Atlassian JIRA (v6.3.4#6332)