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How to rescan for PCI devices in Linux

Tags: howto,linux

Date: 20220902

In a previous post I've written about rescaning for disks, but sometimes we need to enable new PCI devices, especially when hot-adding NICs to a (virtual) machine.

In most cases udev or similar will take care of this automatically, but not in all circumstances.
Here's how to quickly do it manually:

echo 1 >/sys/bus/pci/rescan

Now run ifconfig -a or ip again.

That's it, have a nice one!
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