Bug 1166918

Summary: Docker exec causes Error response from daemon: Unsupported: Exec is not supported by the lxc driver
Product: [Fedora] Fedora EPEL Reporter: Jonathan Tronson <jltronson>
Component: docker-ioAssignee: smahajan <smahajan>
Status: CLOSED INSUFFICIENT_DATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: el6CC: admiller, dwalsh, golang-updates, hushan.jia, jchaloup, jltronson, jperrin, lsm5, mattdm, mgoldman, miminar, s, thrcka, vbatts
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2015-03-09 18:59:45 UTC Type: Bug
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Jonathan Tronson 2014-11-21 23:45:06 UTC 
Description of problem:
When I attempt to run Docker exec on a running container I get the following error:

Error response from daemon: Unsupported: Exec is not supported by the lxc driver


Version-Release number of selected component (if applicable):
# uname -a
Linux 2.6.32-504.el6.x86_64 #1 SMP Tue Oct 14 01:47:47 PDT 2014 x86_64 x86_64 x86_64 GNU/Linux

# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.6 (Santiago)

# docker version
Client version: 1.3.1
Client API version: 1.15
Go version (client): go1.3.3
Git commit (client): 4e9bbfa
OS/Arch (client): linux/amd64
Server version: 1.3.1
Server API version: 1.15
Go version (server): go1.3.3
Git commit (server): 4e9bbfa


How reproducible: 100%


Steps to Reproduce:
1. $ docker exec -it my_docker_image bash

Actual results:
Error response from daemon: Unsupported: Exec is not supported by the lxc driver

Expected results:
The expected result is that I get a bash prompt.

Additional info:
Comment 1 Daniel Walsh 2015-01-19 14:50:57 UTC 
Jonathan  is this still broken?  Also why are you using the lxc back end?