venkata swamybabu budumuru created CLOUDSTACK-1787:
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Summary: [network throttling] Virtual Router Guest & Public
throttling rates are not working as expected
Key: CLOUDSTACK-1787
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1787
Project: CloudStack
Issue Type: Bug
Security Level: Public (Anyone can view this level - this is the default.)
Components: Network Controller
Affects Versions: 4.2.0
Environment: commit d7f9aa637ebc953928e3d601735bc01f6fcff828
advanced zone with 1 xen cluster
Reporter: venkata swamybabu budumuru
Fix For: 4.2.0
Environment info :
Global Settings :
network.throttling.rate = 800 mbps (102400 kBytesps)
vm.network.throttling.rate = 300 mbps (38400 kbps)
service offering = host1.small2, network rate = 400 mbps (51200 kbps)
(i) Create a network offering (in my case with name "Offering3Tag1")
Note : Make sure that nw_rate of above offering is set to 600 mb/s (76800 kbps)
(ii) Create a network "network7" using the above offering i.e "Offering3Tag1"
(iii) Create a network offering "Offering1Tag1" which is not set with any
nw_rate value manually.
(iv) create a network "network1" using the above offering "Offering1Tag1"
(v) deploy a VM using the above networks "network1" & "network2"
(vi) Change the network rate for control system network offering to 700 mb/s
(i.e. 89600 kbps)
mysql> select * from network_offerings where system_only=1 and id=3\G
*************************** 1. row ***************************
id: 3
name: System-Control-Network
uuid: 97690306-203b-4b99-80bc-7037ed9bab9d
unique_name: System-Control-Network
display_text: System Offering for System-Control-Network
nw_rate: 700
mc_rate: 0
traffic_type: Control
tags: NULL
system_only: 1
specify_vlan: 0
service_offering_id: NULL
conserve_mode: 1
created: 2013-03-20 12:15:10
removed: NULL
default: 1
availability: Required
dedicated_lb_service: 1
shared_source_nat_service: 0
sort_key: 0
redundant_router_service: 0
state: Enabled
guest_type: NULL
elastic_ip_service: 0
elastic_lb_service: 0
specify_ip_ranges: 0
inline: 0
is_persistent: 0
1 row in set (0.00 sec)
Observations :
1. Here is the snippet of qos info about Guest Instance
[root@Rack1Pod1Host11 ~]# xe vif-list vm-name-label=i-3-14-VM params=all | grep
qos
qos_algorithm_type ( RW): ratelimit
qos_algorithm_params (MRW): kbps: 51200
qos_supported_algorithms (SRO):
qos_algorithm_type ( RW): ratelimit
qos_algorithm_params (MRW): kbps: 76800
qos_supported_algorithms (SRO):
2. [root@Rack1Pod1Host11 ~]# xe vif-list vm-name-label=r-15-VM params=all| grep
-i qos
qos_algorithm_type ( RW): ratelimit
qos_algorithm_params (MRW): kbps: 102400
qos_supported_algorithms (SRO):
qos_algorithm_type ( RW): ratelimit
qos_algorithm_params (MRW): kbps: 89600
qos_supported_algorithms (SRO):
qos_algorithm_type ( RW): ratelimit
qos_algorithm_params (MRW): kbps: 102400
qos_supported_algorithms (SRO):
3. From the above output, it is evident that Guest's default network got "51200
kbps" which is picked from the service offering i.e. "host1.small2" which is as
expected. and the non-default nic got 76800 kbps which is from network offering
i.e. Offering3Tag1 which is also expected.
4. From the above router related output, Control nic got the right qos value
i.e. 89600 kbps from the control system network offering. This is expected.
5. but, the rest of the two router vifs i.e. public, guest got 102400 kbps as
qos value which is from the global setting network.throttling.rate.
Issue :
As mentioned in observation (5), Guest and Public nics should get their qos
value as 76800 kbps i.e. from the network offering "Offering3Tag1" and it
should not acquire it from global setting.
Here is the reference to the document that talks about how throttling settings
work in cloudstack
http://support.citrix.com/article/CTX132019
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