Hello,

I'd like to introduce a RFE that allows to use a local storage in multi
server environments https://bugzilla.redhat.com/show_bug.cgi?id=1406412

Most servers have a local storage. Some servers have very reliable
storages with hardware RAID controllers and battery units.

Example user cases:
https://www.mail-archive.com/[email protected]/msg36719.html
https://www.mail-archive.com/[email protected]/msg36772.html

The best way to use local storage in multi server "shared" datacenters
is exporting it over NFS. Using NFS allows to move disks and VMs among
servers.

In order to improve performance, disk I/O bound VMs can be pinned to 
a host with local storage. However there still is a performance
drawback of NFS layers. Treating a local NFS storage as a local storage
improves performance for VMs pinned to host.

Currently setting up of NFS exports is out of scope of oVirt. However
this would be a way to get rid of "Local/Shared" storage types of
datacenter. So that all storages are shared, but local storages are
used as local.

Any questions/comments are welcome.

Specifically I'd like to request for comment on potential data
integrity issues during online VM or disk migration between NFS and
localfs. 

Thank you
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