Hi,
I am trying unified containerizer on a single server (master/slave) on
mesos 0.28.1, to switch from docker containerizer to mesos+docker image
container.

I have setup slave config as suggested in documentation:

containerizers=docker,mesos
image_providers=docker \
isolation=filesystem/linux,docker/runtime

However, when I execute my task with a volume I have an error:

....
+ mount -n --rbind
/tmp/mesos/provisioner/containers/2d7ea311-5e8b-440f-a3ca-a40e1b946b8e/backends/copy/rootfses/f9f66bb2-308d-4555-ba77-49ec61cbeb4f
/tmp/mesos/slaves/2a296daf-7419-4659-ade1-763c792cd522-S0/frameworks/aef1b0e3-ea2d-4770-baac-96d673ab88f9-0000/executors/51/runs/2d7ea311-5e8b-440f-a3ca-a40e1b946b8e/.rootfs
+ mount -n --rbind
/home/osallou/Development/NOSAVE/go-docker/godshared/tasks/pairtree_root/us/er/_o/sa/ll/ou/task
/tmp/mesos/slaves/2a296daf-7419-4659-ade1-763c792cd522-S0/frameworks/aef1b0e3-ea2d-4770-baac-96d673ab88f9-0000/executors/51/runs/2d7ea311-5e8b-440f-a3ca-a40e1b946b8e/.rootfs/mnt/god-data
mount: mount point
/tmp/mesos/slaves/2a296daf-7419-4659-ade1-763c792cd522-S0/frameworks/aef1b0e3-ea2d-4770-baac-96d673ab88f9-0000/executors/51/runs/2d7ea311-5e8b-440f-a3ca-a40e1b946b8e/.rootfs/mnt/god-data
does not exist
Failed to execute a preparation shell command

Then, my task switches to FAILED.

I define a local volume to bind mount in my "container"
/home/osallou/Development/NOSAVE/go-docker/godshared/tasks/pairtree_root/us/er/_o/sa/ll/ou/task
=> /mnt/god-data
My directory exists on local server.
In mesos UI, I can see the .rootfs directory along stdout and stderr
files, and inside .rootfs, I can see /mnt/god-data (empty).

Running the same using Docker containerizer instead of mesos
containerizer (with a Docker image) works fine.

It seems it fails to mount my local directory in the container. Any idea
of what is going wrong or how to debug this?


Thanks

-- 
Olivier Sallou
IRISA / University of Rennes 1
Campus de Beaulieu, 35000 RENNES - FRANCE
Tel: 02.99.84.71.95

gpg key id: 4096R/326D8438  (keyring.debian.org)
Key fingerprint = 5FB4 6F83 D3B9 5204 6335  D26D 78DC 68DB 326D 8438

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