openvstorage_install

OpenVStorage doc

http://doc.openvstorage.com/doc_openvstorage/KVM%20Installation#install-the-open-vstorage-software-on-all-storage-

Use the HyperConverged packages option (openvstorage-hc)

Don't create a storage backend before adding the other nodes. The backend arakoon configs will not be properly copied if you do.

Enable root login

On cpu node, enable root login in /etc/ssh/sshd_config

PermitRootLogin yes

Disk layout for ovs setup

/mnt/bfs             :  device : DIR_ONLY            
/mnt/cache1          :  device : /dev/sdi (800 GB)    label : cache1     percentage : 100   ssd : True  type : writecache
/mnt/cache2          :  device : DIR_ONLY            
/var/tmp             :  device : DIR_ONLY 

Make sure to set /mnt/cache2 as type : readcache even though it does not show in the overview

Select arakoon database mountpoint.

/mnt/cache1

Adding extra nodes

Don't add extra nodes concurrently. The ovs setup can not handle that.

Notes

Don't create a storage backend before adding all nodes. The backend arakoon configs will not be properly copied if you do.
Don't add two nodes to a cluster at once, this will crash the machines