Hi Bill, Which steps you ran through on the KVM hosts before trying to add them to the Cluster? Marcos From: Bill James <bill.james(a)consensus.com&gt; Sent: Wednesday, October 9, 2024 7:02 PM To: users <users(a)ovirt.org&gt; Subject: [External] : [ovirt-users] cannot access the Storage Domain(s) <UNKNOWN> attached to the Data Center Default. I'm trying to add 3 more nodes to an active cluster. 3 previous nodes are working fine. I've tried 2 new nodes and they get the same error. It seems strange to me cause the volume is mounted. [root@ovirt5n prod vdsm]# df -h|grep rhev 10.2.2.230:/vol/ovirt_inside_export 440G 57G 384G 13% /rhev/data-center/mnt/10.2.2.230:_vol_ovirt__inside__export ovirt1n-gl.j2noc.com:/gv0 11T 239G 11T 3% /rhev/data-center/mnt/glusterSD/ovirt1n-gl.j2noc.com:_gv0 engine.log says: cannot access the Storage Domain(s) <UNKNOWN> attached to the Data Center Default. vdsm.log says: 2024-10-09 14:55:06,726-0700 ERROR (jsonrpc/2) [storage.dispatcher] FINISH connectStoragePool error=[Errno 13] Permission de nied (dispatcher:70) Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/vdsm/storage/dispatcher.py", line 57, in wrapper result = ctask.prepare(func, *args, **kwargs) File "/usr/lib/python3.9/site-packages/vdsm/storage/task.py", line 93, in wrapper return m(self, *a, **kw) File "/usr/lib/python3.9/site-packages/vdsm/storage/task.py", line 1173, in prepare ..... File "/usr/lib/python3.9/site-packages/ioprocess/__init__.py", line 479, in _sendCommand raise OSError(errcode, errstr) PermissionError: [Errno 13] Permission denied 2024-10-09 14:55:06,726-0700 INFO (jsonrpc/2) [jsonrpc.JsonRpcServer] RPC call StoragePool.connect failed (error 302) in 2. 09 seconds (__init__:300) OS: Rocky 9 vdsm-4.50.5.1-1.el9.x86_64 Any ideas welcome. Thanks vdsm.log and engine.log attached.

thanks for the reply, I appreciate it. Unfortunately we don't use selinux so that's not the issue. [root@ovirt5n prod ~]# sestatus SELinux status: disabled On Sun, Oct 13, 2024 at 6:22 AM change_jeeringly679--- via Users < users(a)ovirt.org&gt; wrote: