CODEWITHSUNDEEP
ubuntudocker
conteh
conteh

Reputation: 1614

Docker: System error: can’t create pivot_root dir

I've got stardog running on an Ubuntu 15.04 container. After a period over a week or so of normal operation I have had the following exception occur twice now. 

Cannot start container f8fc55f1872cd72f1eaad8be57ed5536172d55d1a80fae46812a91d1a022cf77: 
    [8] System error: can't create pivot_root dir , error mkdir /var/lib/docker/devicemapper
    /mnt/f8fc55f1872cd72f1eaad8be57ed5536172d55d1a80fae46812a91d1a022cf77/rootfs
    /.pivot_root580962379: no space left on device

/var is on a partition with 165G available so the drive has plenty of free room. 

[ec2-user@ip-172-31-15-150 ~]$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1      394G  229G  165G  59% /

Any ideas as to what causes this error and how to resolve it?

docker info currently.. be aware I've already delete the container and image and rebuilt at this point so this is misleading..

Containers: 13
Images: 223
Server Version: 1.9.1
Storage Driver: devicemapper
 Pool Name: docker-202:1-263462-pool
 Pool Blocksize: 65.54 kB
 Base Device Size: 10.74 GB
 Backing Filesystem: 
 Data file: /dev/loop0
 Metadata file: /dev/loop1
 Data Space Used: 11.32 GB
 Data Space Total: 107.4 GB
 Data Space Available: 96.06 GB
 Metadata Space Used: 13.07 MB
 Metadata Space Total: 2.147 GB
 Metadata Space Available: 2.134 GB

Thanks Conteh

Upvotes: 1

Views: 2954

Answers (1)

Armin Braun
Armin Braun

Reputation: 3683

 no space left on device

Your Harddrive is full :) Plain and simple => It cant create new containers.

As added in the comment, the output of

docker info

is what counts here as docker is using its own filesystem. To resize it you need to wipe out the existing docker file system ( Backup Volume Content if you need any of it still :) )

Then restart the docker daemon with the option

 docker daemon --storage-opt dm.loopdatasize=200G

or whatever you want to allocate to it :)

Upvotes: 1

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