[Container-tools] Issue with concurrent docker image pulls

[Vincent Batts]

This race condition is tricky. Unfortunately it's sporadic enough, and IIRC
it is only hit when running devicemapper with unsupported loopback files
(docker's default for devicemapper). That's been the biggest reason that no
one has given this attention.

On Thu, Jul 30, 2015 at 7:25 AM, Lalatendu Mohanty <lmohanty at redhat.com>
wrote:

> Hi,
>
> Couple of us seeing issue with docker image pulls in the CentOS 7 Vagrant
> box. I spent some time and felt that its a bug in docker 1.6.2 and found
> the issue [1] in docker github repo. It seems the issue is fixed in docker
> 1.7.1.
>
> So wanted to throw this information to the list and see if others are also
> in agreement or have more information about it.
>
> vagrant at localhost ~]$ docker --version
> Docker version 1.6.2, build ba1f6c3/1.6.2
>
> vagrant at localhost ~]$ sudo docker pull centos/httpd
> latest: Pulling from docker.io/centos/httpd
> 6941bfcbbfca: Pull complete
> 6941bfcbbfca: Download complete
> 41459f052977: Download complete
> fd44297e2ddb: Error downloading dependent layers
> 06d0d6cc01fc: Download complete
> 1634f53d8d34: Download complete
> f5d7d1d76e27: Download complete
> 72d3df4bba94: Download complete
> 4617321b355e: Download complete
> 9f74023d48fc: Download complete
> d3d3700d1c33: Download complete
> dabbf6687da0: Download complete
> 9c9ec0c21871: Download complete
> 9c9ec0c21871: Error pulling image (latest) from docker.io/centos/httpd,
> Driver devicemapper failed to create image rootfs
> fd44297e2ddb050ec4fa9752b7a4e3a8439061991886e2091e7c1f007c906d75: Error
> running DeviceCreFATA[0109] Error pulling image (latest) from
> docker.io/centos/httpd, Driver devicemapper failed to create image rootfs
> fd44297e2ddb050ec4fa9752b7a4e3a8439061991886e2091e7c1f007c906d75: Error
> running DeviceCreate (createSnapDevice) dm_task_run failed
>
>
> [1] https://github.com/docker/docker/issues/9718
>
> Thanks,
> Lala
>
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