Hi,
I was trying to create a new network on a Xen server using RPC::XML calls.
To create network, network_record need to be passed to RPC::XML::Client::simple_request. I didn’t want to manually create network record so I used a method call to get network_record and then used this record to create new network.
Here is the script which does the above
use Data::Dumper;
use RPC::XML;
use RPC::XML::Client;
use RPC::XML::Server;
my $xenhost = "xen_host";
my $user = "user";
my $passwd = "passwd";
my $xen = RPC::XML::Client->new("http://$xenhost:80");
print "Coming here\n";
my $s = $xen->simple_request("session.login_with_password",$user,$passwd);
if (! $s) {
print "error is $@ \n";
}
my $session = extractvalue($xen->simple_request("session.login_with_password",
$user,$passwd));
if (! $session){
print "connection failure : $xenhost\n";
exit;
}
$net_ref = extractvalue($xen->simple_request("network.get_by_uuid", $session, "086e19b2-fe6a-69ed-47df-4c91bd5c5a15"));
$rec_ref = extractvalue($xen->simple_request("network.get_record", $session, $net_ref));
$net = extractvalue($xen->simple_request("network.create", $session, $rec_ref));
This is the error I got
$VAR1 = {
'ErrorDescription' => [
'FIELD_TYPE_ERROR',
'mTU'
],
'Status' => 'Failure'
};
This is how network record looks like
$VAR1 = {
'Value' => {
'other_config' => {
'automatic' => 'false'
},
'blobs' => {},
'uuid' => '086e19b2-fe6a-69ed-47df-4c91bd5c5a15',
'bridge' => 'xenbr0',
'tags' => [],
'MTU' => '1500',
'VIFs' => [
'OpaqueRef:ad959f71-550f-f901-323a-f79b81e763f5',
'OpaqueRef:7e30f00a-66ee-1cc7-e68f-de3bccab2bea',
'OpaqueRef:502ca96f-ccbf-780d-8978-8c76be41c838'
],
'PIFs' => [
'OpaqueRef:d88b32e6-6005-631b-c843-3281a45db361',
'OpaqueRef:35a95e44-7839-4546-8b02-02132fbfe9ad'
],
'name_label' => 'Pool-wide network associated with eth0',
'name_description' => '',
'allowed_operations' => [],
'current_operations' => {}
},
'Status' => 'Success'
};
So I changed MTU to mTU in network record. It worked fine.
$rec_ref->{mTU} = 1500;
delete($rec_ref->{MTU};
$net = extractvalue($xen->simple_request("network.create", $session, $rec_ref));
And this is the output
$VAR1 = {
'Value' => 'OpaqueRef:a53e5a07-dcc8-b5d5-196d-5e894b44ea7a',
'Status' => 'Success'
};
So field accepted by "network.create" is ‘mTU’ and not ‘MTU’ which is I think wrong because field return by “network.get_record” is ‘MTU’.
Problem 2.
I was trying to create a VIF the way I created network. This is the code that I used
$vif_ref = extractvalue($xen->simple_request("VIF.get_by_uuid", $session, "086e19b2-fe6a-69ed-47df-4c91bd5c5a15"));
$rec_ref = extractvalue($xen->simple_request("VIF.get_record", $session, $vif_ref));
$vif = extractvalue($xen->simple_request("VIF.create", $session, $rec_ref));
This is how VIF record looks like
$VAR1 = {
'other_config' => {},
'network' => 'OpaqueRef:c76e3a4d-ceb0-c66f-707d-a6fdd2e06839',
'MAC_autogenerated' => 1,
'VM' => 'OpaqueRef:76120c51-60d2-0ef6-dda6-99fb12d9ce27',
'qos_algorithm_params' => {},
'uuid' => '9e72c72e-6d23-b300-9a1d-a54e2d6a50ab',
'qos_algorithm_type' => '',
'metrics' => 'OpaqueRef:a343e74c-12b3-dd73-9f3e-ac0113fd17a3',
'qos_supported_algorithms' => [],
'status_code' => '0',
'runtime_properties' => {},
'mTU' => 1500,
'MAC' => 'fe:13:d8:39:e5:6d',
'device' => '',
'MTU' => 1500,
'currently_attached' => 1,
'allowed_operations' => [
'attach',
'unplug'
],
'status_detail' => '',
'current_operations' => {}
};
When I ran above code this is the error I got
$VAR1 = {
'ErrorDescription' => [
'FIELD_TYPE_ERROR',
'mTU'
],
'Status' => 'Failure'
};
So I did the same thing that I did with “network.create”, but it didn’t work.
$VAR1 = {
'ErrorDescription' => [
'INTERNAL_ERROR',
'Server_helpers.Dispatcher_FieldNotFound("MTU")'
],
'Status' => 'Failure'
};
So I kept both mTU and MTU having the same value. Still didn’t work
$VAR1 = {
'ErrorDescription' => [
'FIELD_TYPE_ERROR',
'mTU'
],
'Status' => 'Failure'
};
It looks like xen-api issue to me. Can someone please help me with this.
Regards,
Rawat
