# Adding module drbd\_transport\_lb\_tcp at boot time

**URL:** <https://forums.linbit.com/t/adding-module-drbd-transport-lb-tcp-at-boot-time/477>\
**Category:** DRBD\
**Tags:** drbd, kernel-modules\
**Created:** [December 8, 2024, 11:22am UTC](https://forums.linbit.com/t/adding-module-drbd-transport-lb-tcp-at-boot-time/477 "2024-12-08T11:22:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Anton](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@Anton](https://forums.linbit.com/u/Anton)\
**Post date:** [December 8, 2024, 11:22am UTC](https://forums.linbit.com/t/adding-module-drbd-transport-lb-tcp-at-boot-time/477/1 "2024-12-08T11:22:32Z")

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By default pacemaker/corosync at node boot time load two modules -

drdbd  
drbd\_transport\_tcp

For failover and multipath balancing, module drbd\_transport\_lb\_tcp required.

How to tell pacemaker/corosync load module drbd\_transport\_lb\_tcp at boot time ?

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**Author:** ![nischalnischal](https://avatars.discourse-cdn.com/v4/letter/n/dbc845/32.png) [@nischalnischal](https://forums.linbit.com/u/nischalnischal)\
**Post date:** [December 9, 2024, 4:02am UTC](https://forums.linbit.com/t/adding-module-drbd-transport-lb-tcp-at-boot-time/477/2 "2024-12-09T04:02:01Z")

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Hi Anton

We generally load modules in Linux using the /etc/modules-load.d/drbd.conf  
You can make an entry in this file like

drbd  
drbd\_transport\_tcp  
drbd\_transport\_lb\_tcp

After a reboot the module should be loaded.

Please let me know if this works.

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<div class="post-metadata">

**Author:** ![Anton](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@Anton](https://forums.linbit.com/u/Anton)\
**Post date:** [December 9, 2024, 7:52am UTC](https://forums.linbit.com/t/adding-module-drbd-transport-lb-tcp-at-boot-time/477/3 "2024-12-09T07:52:39Z")

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> Please let me know if this works.

The folder /etc/modules-load.d is empty.

So I created /etc/modules-load.d/drbd.conf with next lines -

drbd  
drbd\_transport\_tcp  
drbd\_transport\_lb\_tcp

and reboot the node.

After node reboot I have

[root@memverge ~]# uptime  
09:50:12 up 2 min, 1 user, load average: 0.52, 0.42, 0.17  
[root@memverge ~]#  
[root@memverge ~]# lsmod|grep drbd  
drbd\_transport\_tcp 40960 5  
drbd 1015808 2 drbd\_transport\_tcp  
libcrc32c 12288 4 nf\_tables,xfs,drbd,raid456  
[root@memverge ~]#  
[root@memverge ~]# cat /etc/modules-load.d/drbd.conf  
drbd  
drbd\_transport\_tcp  
drbd\_transport\_lb\_tcp  
[root@memverge ~]#