[sheepdog-users] Formatting an ext4 filesystem quickly

[Hitoshi Mitake]

At Thu, 24 Apr 2014 11:26:27 -0500,
Scott Devoid wrote:
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> Hi all,
> 
> I'm building out the sheepdog drivers for OpenStack Nova. In order to build
> ephemeral volumes for VMs we need to provision a vdi and format it with a
> labeled filesystem. I've gotten this to work with the sheepfs client on a
> reasonably sized cluster (20 nodes) and for a 10G volume, the format
> happens <1s. But the development cluster I have in Devstack is 3 nodes with
> -c local. In this scenario, sheepfs takes >5 min  to format the filesystem.

Hmm, it sounds strange. I tested ext4 format with latest sheepfs and
v0.6.0 sheepfs on my box. Both of them could complete formatting in
few seconds.

Could you provide more information e.g. options for sheep and logs?

Thanks,
Hitoshi