On Thu, Jul 5, 2018 at 10:46 AM Daniel Erez <derez@redhat.com> wrote:
From: root <root@localhost.localdomain>

For direct upload, a suitable host must be in status 'Up'
and belong to the same datacenter as the created disk.
Added these criteria to the host search query.
---
 v2v/rhv-upload-plugin.py | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/v2v/rhv-upload-plugin.py b/v2v/rhv-upload-plugin.py
index da309e288..c72f5e181 100644
--- a/v2v/rhv-upload-plugin.py
+++ b/v2v/rhv-upload-plugin.py
@@ -67,11 +67,23 @@ def find_host(connection):
         debug("cannot read /etc/vdsm/vdsm.id, using any host: %s" % e)
         return None

-    debug("hw_id = %r" % vdsm_id)

I would leave this as is...
 
+    system_service = connection.system_service()
+    storage_name = params['output_storage']
+    data_centers = system_service.data_centers_service().list(
+        search='storage=%s' % storage_name,
+        case_sensitive=False,
+    )
+    if len(data_centers) == 0:
+        # The storage domain is not attached to a datacenter
+        # (shouldn't happen, would fail on disk creation).

A debug message here would be helpful.
 
+        return None
+
+    datacenter = data_centers[0]
+    debug("hw_id = %r, datacenter = %s" % (vdsm_id, datacenter.name))

And log only the datacenter here, to match other logs in the plugin.

-    hosts_service = connection.system_service().hosts_service()
+    hosts_service = system_service.hosts_service()
     hosts = hosts_service.list(
-        search="hw_id=%s" % vdsm_id,
+        search="hw_id=%s and datacenter=%s and status=Up" % (vdsm_id, datacenter.name),
         case_sensitive=False,
     )
     if len(hosts) == 0:

We need to change the comments and debug message here. The current code is:

 77     if len(hosts) == 0:
 78         # This oVirt host is not registered with engine.
 79         debug("cannot find host with hw_id=%r, using any host" % vdsm_id)
 80         return None

We are handling 3 cases:
1. host not found
2. host no in the datacenter
3. host not up

The comment and the debug message should make it clear.

Nir