One, the original query was about "local" storage.

Two, this still has the same maintenance problem.  Taking down a host (node) 
for maintenance, will take down any VM with storage on that host.

Three,  to work around this issue, you would need to use an alternative storage 
mechanism, where you can have multiple copies of the same data, spread across 
multiple hosts.   Gluster is usually the solution for this.

Four,  The additional compute/memory overhead of either NFS or Gluster, reduced 
the capability of the host to support virtual machines.

SAN storage is the preferred storage for virtualization environments, because 
it isolates storage from compute, and has two controllers, so each can be 
service individually.

Barring SAN storage,  small cluster of Gluster hosts is the next best options, 
and failing that,  independent NFS storage.    

SAN and Gluster will permit you to service the equipment the storage is running 
on.

NFS will require you to shut everything down.

-----Original Message-----
From: Frank Wall <f...@moov.de> 
Sent: Wednesday, April 17, 2024 4:06 PM
To: users@ovirt.org
Subject: [ovirt-users] Re: How to Add a host as storage in oVirt-4.5

On 2024-04-15 13:32, Ankit Sharma wrote:
> Now i want to upgrade storage but want to use host for storage so how 
> can i use and add Local storage and use it for VM's?

It has always been possible to use local storage in oVirt, you just have to 
export it somehow, e.g. by using NFS.

Just a few steps to prepare the oVirt node:
- prepare the local storage directory (e.g. set proper permissions for
oVirt)
- setup a local NFS server (must be reachable by all other oVirt nodes)
- add the NFS share as new storage domain in oVirt

I've been using this approach several times, it's really that simple.


Ciao
- Frank
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