** Tags added: smoosh
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https://bugs.launchpad.net/bugs/1355813
Title:
LXC containers reset bridge MTU on start/restart
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I've re-titled this bug to be about effective interface MTU management
across MAAS and Juju; enabling Jumbo frames is something that we should
support in our core tooling and is critical for the successful operation
of a Neutron based OpenStack Cloud.
Combine this with LXC container spread across
@James,
the bug was incomplete because the question in comment #2 was never
answered until comment #4.
So it sounds like something juju needs to do through lxc config - if
there is anything sane that you can think of htat lxc can do to help,
please let us know.
** Changed in: lxc (Ubuntu)
why is this bug incomplete? as far as I can see there is sufficient
information to triage this...
Yes - you have to set the mtu on the lxc container interfaces to match
the bridge, otherwise it drops to the lowest MTU of any attached veth.
For now I've patched the config files to set the mtu
** Tags added: cts-cloud-review
** Tags added: add-unit
** Changed in: juju-core
Status: New = Triaged
** Changed in: juju-core
Importance: Undecided = Medium
** Tags added: placement
** Tags added: network
** Changed in: juju-core
Milestone: None = 1.22
** Changed in:
i've seen reference to you can't really set a bridge mtu, you have to
set it for all the containers on the bridge, ie. bridges take the lowest
mtu of their interfaces. so instead we have to set all the containers
mtu.
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** Changed in: lxc (Ubuntu)
Status: New = Incomplete
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https://bugs.launchpad.net/bugs/1355813
Title:
LXC containers reset bridge MTU on start/restart
To manage
** Changed in: juju-core
Status: New = Incomplete
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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1355813
Title:
LXC containers reset bridge MTU on start/restart
To manage
** Changed in: maas
Status: New = Incomplete
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Server Team, which is subscribed to lxc in Ubuntu.
https://bugs.launchpad.net/bugs/1355813
Title:
LXC containers reset bridge MTU on start/restart
To manage
Hi James,
does setting lxc.network.mtu = 9000 in the container configuration file
work?
Depending on how juju creates the containers, you may be able to simply
add that line to the bottom of /etc/lxc/default.conf to get the desired
result.
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