Once T330075: [cloudvirt] Enable jumbo frames on cloud-hosts/cloud-private interfaces is done, we can tell Neutron about it to allow a 1500 MTU inside guest VMs.
Description
Description
Details
Details
Related Changes in Gerrit:
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Resolved | taavi | T408543 MTU setting in IPv6 VMs causes issues with Docker | |||
| Resolved | taavi | T409544 Tell Neutron the physical network has jumbo frames enabled | |||
| Resolved | taavi | T330075 [cloudvirt] Enable jumbo frames on cloud-hosts/cloud-private interfaces |
Event Timeline
Comment Actions
Change #1203402 had a related patch set uploaded (by Majavah; author: Majavah):
[operations/puppet@production] P:openstack: neutron: Enable jumbo frames in codfw1dev Neutron config
Comment Actions
Change #1203402 merged by Majavah:
[operations/puppet@production] P:openstack: neutron: Enable jumbo frames in codfw1dev Neutron config
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Setting the network MTU does update the Neutron router ports, but not the guest VMs interfaces. I found related https://bugs.launchpad.net/neutron/+bug/2101087 which says "it is needed to detach and re-attach again the interface or reboot the VM" to change the MTU.
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A os server stop $id ; sleep N ; os server start $id cycle is enough to update the MTU.
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Change #1204814 had a related patch set uploaded (by Majavah; author: Majavah):
[operations/puppet@production] P:openstack: neutron: Set MTU setting to 9000 in eqiad1
Comment Actions
Change #1204814 merged by Majavah:
[operations/puppet@production] P:openstack: neutron: Set MTU setting to 9000 in eqiad1