diff options
| author |   Alexandru Avadanii <Alexandru.Avadanii@enea.com> | 2018-08-13 19:10:50 +0200 |
|---|---|---|
| committer | Alexandru Avadanii <Alexandru.Avadanii@enea.com> | 2018-08-13 19:28:22 +0200 |
| commit | 890316df4cfa1440c6e5d4d26c8eba721de7fc27 (patch) | |
| tree | 7cca9caed842ab938d8141a1b565b189b932544d /mcp/scripts/lib.sh | |
| parent | 9b38e04de451a60da0bc8a685612282cd1b60ee6 (diff) | |
[jump] Enable jumbo frames for vnet devices
By default, vnet devices have a MTU of 1500 on the host side, causing
issue with larger packets traversing the bridges between guest VMs
when guest VMs have jumbo frames enabled.
JIRA: FUEL-336
JIRA: FUEL-367
JIRA: FUEL-382
[1] http://linuxaleph.blogspot.com/2013/01/
how-to-network-jumbo-frames-to-kvm-guest.html
[2] https://packetpushers.net/udev/
Change-Id: I941ac9cf764e3b3fa2d6463be5363b5459775f29
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
Diffstat (limited to 'mcp/scripts/lib.sh')
| -rw-r--r-- | mcp/scripts/lib.sh | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mcp/scripts/lib.sh b/mcp/scripts/lib.sh index 4e4f36908..c566cc993 100644 --- a/mcp/scripts/lib.sh +++ b/mcp/scripts/lib.sh @@ -546,6 +546,13 @@ function wait_for { ) } +function do_udev_cfg { + local _conf='/etc/udev/rules.d/99-opnfv-fuel-vnet-mtu.rules' + # http://linuxaleph.blogspot.com/2013/01/how-to-network-jumbo-frames-to-kvm-guest.html + echo 'SUBSYSTEM=="net", ACTION=="add", KERNEL=="vnet*", RUN+="/sbin/ip link set mtu 9000 dev '"'"%k"'"'"' |& sudo tee "${_conf}" + sudo udevadm control --reload || true +} + function do_sysctl_cfg { local _conf='/etc/sysctl.d/99-opnfv-fuel-bridge.conf' # https://wiki.libvirt.org/page/Net.bridge.bridge-nf-call_and_sysctl.conf |