Canonical Juju

mtu configuration should not be moved to bridge interface

Bug #1584616 reported by Trent Lloyd
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Canonical Juju
Fix Released
Critical
Andrew McDermott
Canonical Juju 2.0-beta12
juju-core
Won't Fix
High
Michael Foord
1.25
Fix Released
High
Michael Foord
juju-core 1.25.7

Bug Description

When deploying juju 2.0-beta7 onto a xenial machine managed by MAAS 2, the mtu statement is moved from the interface to the bridge.

The MTU statement must be on the interface to work, as bridges inherit the lowest MTU of all sub-interfaces.

Further to this, ifupdown seems to bug out and always fails to add the default route when an MTU is set on the bridge. Thus, this issue completely breaks the network on reboot.

Tags: 2.0 network
Revision history for this message
Trent Lloyd (lathiat) wrote :

The following bug is partially related, but is technically for a different issue:
https://bugs.launchpad.net/juju-core/+bug/1403955

Revision history for this message
Trent Lloyd (lathiat) wrote :

I do not agree duplicate determination. Was it marked duplicate because you plan to effectively fix it at the same time?

My issue is not with what the MTU is set to, but simply that the MTU already there (in my case, placed there by MAAS) was moved from the interface to the bridge stanza. This is both invalid, and also breaks the network bring-up so that you don't get a default route, leaving the state server broken after a reboot.

Revision history for this message
Andrew McDermott (frobware) wrote :

I agree that this is not a duplicate of bug #1569802. Plan to fix this for juju-2.0-beta12.

Changed in juju-core:
status: New → Confirmed
importance: Undecided → Critical
assignee: nobody → Andrew McDermott (frobware)
milestone: none → 2.0-beta12
status: Confirmed → In Progress
tags: added: network
Revision history for this message
Andrew McDermott (frobware) wrote :

RB - http://reviews.vapour.ws/r/5234/

Andrew McDermott (frobware)
tags: added: blocker
Andrew McDermott (frobware)
Changed in juju-core:
status: In Progress → Fix Committed
tags: removed: blocker
Cheryl Jennings (cherylj)
tags: added: 2.0
Curtis Hovey (sinzui)
Changed in juju-core:
status: Fix Committed → Fix Released
Revision history for this message
Michael Foord (mfoord) wrote :

1.25 backport : https://github.com/juju/juju/pull/6013

Canonical Juju QA Bot (juju-qa-bot)
affects: juju-core → juju
Changed in juju:
milestone: 2.0-beta12 → none
milestone: none → 2.0-beta12
Canonical Juju QA Bot (juju-qa-bot)
Changed in juju-core:
assignee: nobody → Michael Foord (mfoord)
importance: Undecided → High
status: New → In Progress
Anastasia (anastasia-macmood)
Changed in juju-core:
status: In Progress → Won't Fix
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