Bug 1004196 - Assigning a non_vm/vlan/bond network with MTU to a host doesn't effect its interface.
Assigning a non_vm/vlan/bond network with MTU to a host doesn't effect its in...
Product: Red Hat Enterprise Virtualization Manager
Classification: Red Hat
Component: vdsm (Show other bugs)
Unspecified Unspecified
high Severity urgent
: ---
: 3.3.0
Assigned To: Dan Kenigsberg
: AutomationBlocker, Regression, TestBlocker
Depends On:
Blocks: 1019461
  Show dependency treegraph
Reported: 2013-09-04 03:56 EDT by awinter
Modified: 2016-04-18 02:53 EDT (History)
8 users (show)

See Also:
Fixed In Version: IS15 vdsm-4.12.0-138.gitab256be.el6ev.x86_64
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2014-01-21 11:15:02 EST
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: Network
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
supervdsm.log (host pink-vds4) (13.21 KB, text/x-log)
2013-09-12 07:29 EDT, awinter
no flags Details
supervdsm.log (host pink-vds4.qa.lab.tlv.redhat.com) (615.52 KB, text/x-log)
2013-09-12 07:29 EDT, awinter
no flags Details

External Trackers
Tracker ID Priority Status Summary Last Updated
oVirt gerrit 18966 None None None Never

  None (edit)
Description awinter 2013-09-04 03:56:54 EDT
Description of problem:
Assigning a NON VM network with mtu via setup network to a host doesn't effect the host's interface.

Steps to Reproduce:
1. Create a non vm network (sw162) with mtu 5000 (make sure it's non-vm)
2. Via setup networks, attach sw162 to eth1

Actual results:
sw162 on eth1 (in the host) has mtu equal to 1500

Expected results:
sw162 on eth1 (in the host) has mtu equal to 5000
Comment 1 Dan Kenigsberg 2013-09-07 19:14:10 EDT
This reminds me of https://bugzilla.redhat.com/show_bug.cgi?id=980174#c17 .
Which other networks are defined on the host? Could you check if all ifcfg files exists?
Comment 2 awinter 2013-09-08 02:11:01 EDT
In the rhevm:
I have defined "rhevm" network on eth0 & "sw164" on eth1.
(sw164 is a non-vm network with vlan id equals to 164 and MTU equals to 4000)

In the Host:
In the directory /etc/sysconfig/network-scripts/ I have the default files (ifcfg-eth0, ifcfg-eth1, ifcfg-eth2, ifcfg-eth3, ...) and ifcfg-eth1.164.

The content of ifcfg-eth1.164 is:

# Generated by VDSM version 4.12.0-105.git0da1561.el6ev
Comment 3 Meni Yakove 2013-09-08 09:58:59 EDT
This BZ effect also on VM network with VLAN.

Steps to Reproduce:
1. create VLAN network with MTU 5000
2. Attach the network to the host
3. Check the network MTU on the host

Actual results:
network (in the host) has mtu equal to 1500

Expected results:
network (in the host) has mtu equal to 5000
Comment 5 Dan Kenigsberg 2013-09-12 07:06:06 EDT
I fail to reproduce this. Please provide the relevant vdsm version, as well as vdsm.log and supervdsm.log (these are better provided in any vdsm bug). If possible, ping me to log into a host where it has happened.
Comment 6 awinter 2013-09-12 07:29:01 EDT
Created attachment 796793 [details]
supervdsm.log (host pink-vds4)
Comment 7 awinter 2013-09-12 07:29:49 EDT
Created attachment 796794 [details]
supervdsm.log (host pink-vds4.qa.lab.tlv.redhat.com)
Comment 8 Dan Kenigsberg 2013-09-12 10:18:25 EDT
This seems to be fixed by Mark Wu's http://gerrit.ovirt.org/18966
Comment 9 Meni Yakove 2013-09-18 02:16:42 EDT
Comment 10 Charlie 2013-11-27 19:30:18 EST
This bug is currently attached to errata RHBA-2013:15291. If this change is not to be documented in the text for this errata please either remove it from the errata, set the requires_doc_text flag to 
minus (-), or leave a "Doc Text" value of "--no tech note required" if you do not have permission to alter the flag.

Otherwise to aid in the development of relevant and accurate release documentation, please fill out the "Doc Text" field above with these four (4) pieces of information:

* Cause: What actions or circumstances cause this bug to present.
* Consequence: What happens when the bug presents.
* Fix: What was done to fix the bug.
* Result: What now happens when the actions or circumstances above occur. (NB: this is not the same as 'the bug doesn't present anymore')

Once filled out, please set the "Doc Type" field to the appropriate value for the type of change made and submit your edits to the bug.

For further details on the Cause, Consequence, Fix, Result format please refer to:


Thanks in advance.
Comment 11 Dan Kenigsberg 2013-12-02 12:40:42 EST
This bug is a regression due to our initial solution for bz 982632. No need to document it.
Comment 14 errata-xmlrpc 2014-01-21 11:15:02 EST
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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