How can I use block storage with a coreos cluster?

I want my media server to be distributable but access a block storage media on one of the coreos nodes. What’s the best solution?

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Currently a block storage device can only be accessed by a single droplet at a time. While there is not yet a low level solution to share a block storage device among members of a coreOS cluster you could run a file sharing (NFS/Samba/SSHFS) service on one droplet to make your file-system accessible to other members of the cluster. This method could also be used to share across different data centers with a properly configured firewall.