Docker exec fails with status 129 and no message #18948
Description
I'm trying to debug an issue where exec seems to be broken on the latest experimental build. The symptoms are any command seems to fail when exec'd in any container. This works under 1.9.
I'm currently using devicemapper, but the same issue occurred under AUFS and overlayfs.
This is a clean install of Ubuntu 14.04.3 on AWS, with docker experimental freshly installed via curl -sSL https://experimental.docker.com/ | sh.
ubuntu@ip-10-0-0-54:~$ docker exec -it lox_s3ql_1 bash
DEBU[0019] Calling POST /v1.22/containers/lox_s3ql_1/exec
DEBU[0019] POST /v1.22/containers/lox_s3ql_1/exec
DEBU[0019] form data: {"AttachStderr":true,"AttachStdin":true,"AttachStdout":true,"Cmd":["bash"],"Container":"lox_s3ql_1","Detach":false,"Privileged":false,"Tty":true,"User":""}
DEBU[0019] Calling POST /v1.22/exec/19d9a03caa657a5bce605323e3aed764b071023c2ce59f27e37ad4aa8d7f2c1a/start
DEBU[0019] POST /v1.22/exec/19d9a03caa657a5bce605323e3aed764b071023c2ce59f27e37ad4aa8d7f2c1a/start
DEBU[0019] form data: {"AttachStderr":true,"AttachStdin":true,"AttachStdout":true,"Cmd":["bash"],"Container":"lox_s3ql_1","Detach":false,"Privileged":false,"Tty":true,"User":""}
DEBU[0019] starting exec command 19d9a03caa657a5bce605323e3aed764b071023c2ce59f27e37ad4aa8d7f2c1a in container 1de7586cbd51dd2b78120d6318eeba2e64852cdd8b658124789f62cef0723634
DEBU[0019] attach: stdin: begin
DEBU[0019] attach: stdout: begin
DEBU[0019] Calling POST /v1.22/exec/19d9a03caa657a5bce605323e3aed764b071023c2ce59f27e37ad4aa8d7f2c1a/resize
DEBU[0019] POST /v1.22/exec/19d9a03caa657a5bce605323e3aed764b071023c2ce59f27e37ad4aa8d7f2c1a/resize?h=57&w=206
DEBU[0020] Exec task in container 1de7586cbd51dd2b78120d6318eeba2e64852cdd8b658124789f62cef0723634 exited with code 129
DEBU[0020] attach: stdout: end
DEBU[0020] attach: stdin: end
DEBU[0020] Calling GET /v1.22/exec/19d9a03caa657a5bce605323e3aed764b071023c2ce59f27e37ad4aa8d7f2c1a/json
DEBU[0020] GET /v1.22/exec/19d9a03caa657a5bce605323e3aed764b071023c2ce59f27e37ad4aa8d7f2c1a/json
DEBU[0020] Closing buffered stdin pipe
Exited with 129ubuntu@ip-10-0-0-54:~$ uname -a
Linux ip-10-0-0-54 3.13.0-48-generic #80-Ubuntu SMP Thu Mar 12 11:16:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
buntu@ip-10-0-0-54:~$ docker info
DEBU[0089] Calling GET /v1.22/info
DEBU[0089] GET /v1.22/info
Containers: 6
Images: 30
Server Version: 1.10.0-dev
Storage Driver: devicemapper
Pool Name: docker-202:1-152966-pool
Pool Blocksize: 65.54 kB
Base Device Size: 107.4 GB
Backing Filesystem: ext4
Data file: /dev/loop0
Metadata file: /dev/loop1
Data Space Used: 4.52 GB
Data Space Total: 107.4 GB
Data Space Available: 1.827 GB
Metadata Space Used: 6.308 MB
Metadata Space Total: 2.147 GB
Metadata Space Available: 1.827 GB
Udev Sync Supported: true
Deferred Removal Enabled: false
Deferred Deletion Enabled: false
Deferred Deleted Device Count: 0
Data loop file: /var/lib/docker/0.0/devicemapper/devicemapper/data
WARNING: Usage of loopback devices is strongly discouraged for production use. Either use `--storage-opt dm.thinpooldev` or use `--storage-opt dm.no_warn_on_loop_devices=true` to suppress this warning.
Metadata loop file: /var/lib/docker/0.0/devicemapper/devicemapper/metadata
Library Version: 1.02.77 (2012-10-15)
Execution Driver: native-0.2
Logging Driver: json-file
Plugins:
Volume: local
Network: host bridge null
Kernel Version: 3.13.0-48-generic
Operating System: Ubuntu 14.04.2 LTS
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 3.661 GiB
Name: ip-10-0-0-54
ID: 5BJK:K5XT:TU3Z:SEYM:TLRT:7WV6:G3V4:P4Z7:GAOG:H4VK:SAP4:YEAI
Debug mode (server): true
File Descriptors: 45
Goroutines: 66
System Time: 2015-12-29T04:18:26.982207505Z
EventsListeners: 0
Init SHA1: 63f95985c4c8aa697c678e4fcd7aba9a7c2de4de
Init Path: /usr/lib/docker/dockerinit
Docker Root Dir: /var/lib/docker/0.0
WARNING: No swap limit support
Experimental: true
ubuntu@ip-10-0-0-54:~$ uname -a
Linux ip-10-0-0-54 3.13.0-48-generic #80-Ubuntu SMP Thu Mar 12 11:16:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux