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Created attachment 1329216[details]
Adds MTU parameter to dracut bond= and configures the bond with the MTU.
Description of problem:
When configuring an interface on a bond to use jumbo frames in dracut, the interfaces are all set to 1500.
Version-Release number of selected component (if applicable):
7.3, 7.4
How reproducible:
Always
Steps to Reproduce:
1. Add ip=10.4.64.21::10.4.64.1:255.255.192.0::br0.1000:none:9000 bond=bond0:eth0:mode=1 bridge=br0:bond0 vlan=br0.1000:br0 to the command line (may also need rd.neednet=1 if not booting over network).
2. Clear out /etc/sysconfig/network-scripts/ifcfg-*
3. Reboot
Actual results:
# ip link
...
4: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP mode DEFAULT group default qlen 1000
...
11: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UP mode DEFAULT group default qlen 1000
12: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
13: br0.1000@br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
Expected results:
Add ip=10.4.64.21::10.4.64.1:255.255.192.0::br0.1000:none:9000 bond=bond0:eth0:mode=1:9000 bridge=br0:bond0 vlan=br0.1000:br0 to the command line
ip link:
...
4: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 9000 qdisc mq master bond0 state UP mode DEFAULT group default qlen 1000
...
11: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 9000 qdisc noqueue master br0 state UP mode DEFAULT group default qlen 1000
12: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP mode DEFAULT group default qlen 1000
13: br0.1000@br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP mode DEFAULT group default qlen 1000
Additional info:
Upstream dracut almost has it right with commit 292548be6ec8e701dab1a532ca072707e890b12e, but there is an error in ifup.sh where $netif should be $bondname. I submitted https://github.com/dracutdevs/dracut/pull/286 to fix that. I'm attaching a good patch that works correctly.
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.
https://access.redhat.com/errata/RHBA-2018:0964