[Container-tools] things i noticed about docker in abd

[Lalatendu Mohanty]

On 04/05/2016 03:40 AM, Langdon White wrote:
> Hi,
>
> I am not sure Burr had the default configuration for the ADB but, I 
> believe he did. He ran out of disk space for docker images and I took 
> a look at his machine. I noticed a couple things you may want to address:
>
> 1) the size of the /  partition seems ridiculously large at 20G (he 
> had about 7G used, so maybe 10?)
> 2) the docker storage setup was using devicemapper. Would it make more 
> sense and be faster to use one of the other storage options? I could 
> have misread the docker-storage conf file as it has been a while since 
> i have looked at one.
> 3) I also thought that the docker data size was kinda small at 6g 
> given the vm has a 40g thinly provisioned disk.
>
> this is more of an enhancement, as a user of ADB, Burr did not have a 
> good idea for 1) how to extend the size of his docker storage, 2) how 
> to do it safely, 3) how to clean up his crufty images.
>
> I would propose:
> 1) modify docker-storage-setup to have an "easy" mode that takes a 
> param for metadata size, disk size, and device/lvm-pool
> 2) doc with above to restart docker
> 3) add in vpavlin's (i think they were his) handy set of aliases for 
> docker image/container cleanup
>
> just some ideas from being there when Burr was trying to fix up his 
> docker in ADB :)
>
> langdon
>

Langdon,

It seems the file partition of ADB and CDK differs  with respect to 
docker storage setup. The above issue  seems like to be in CDK but not 
in ADB.  Can you please confirm if you and Burr has seen these issues in 
CDK and not in ADB.

ADB's / i.e. root partition is of 8GB and rest of the space is given to 
docker storage setup. [1]

[1] 
https://github.com/projectatomic/adb-atomic-developer-bundle/blob/master/build_tools/kickstarts/centos-7-adb-vagrant.ks#L25

Thanks,
Lala
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