404 Failed to locate volume about openstorage HOT 10 CLOSED

Hi @yoanisgil - This is because you have not specified a key/value database for the OSD to use.

By default OSD will use an in memory ephemeral DB. So volumes created will be lost across restarts.

To use a persistent key/value DB such as ETCD, specify the URL via the --kvdb option.

I suppose the README should document this.

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@gourao thanks! Is consul supported? You probably use libkv but I just wanted to check.

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Well, looks like is not :(. It would be nice thought to support consul or any other backend support by Swarm, probably using https://github.com/docker/libkv. Anyhow, I will go with etcd for the moment.

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It seems pretty easy to use libkv. I'll take a look at swapping to it.

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Thanks! That will be a valuable addition since it will make things easier for those using Swarm ;)

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@gourao I am running OSD on 3 nodes (the goal is to have persistent volumes on top of a Swarm cluster). I am running osd like this:

/usr/local/bin/osd -d -f /usr/local/etc/osd.yml --kvdb etcd-kv://aws034:4001

and I was expecting that when creating a volume on node1 it should then be listed on node2 with docker volume ls. Isn't that the expect result?

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@yoanisgil 'docker volume ls' should work seamlessly with swarm pending 'docker-archive/classicswarm#1189' - if you use 'osd <driver_name> enumerate/inspect' that will display cluster wide persistent volumes. There is also work being done for docker to directly query the volume plugin api to ls volumes - this would make 'docker volume ls' persistent across docker restarts which it currently is not.

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Hey @yoanisgil
I just checked in support for consul. I did very basic testing on it, but it seems to work for me.

Run it as
osd -d -f config.yaml --kvdb=consul-kv://localhost:8500

I could not use libkv as is because OSD has other extensions it uses and the KVDB it currently uses supports transactions.

In any event, try this out and see if it works.

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All right! Will take a look at let you know.

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Closing since consul support is in.

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