Red Hat SummitChapter 10. Receiving the Could not open network device dpdk0 (No such device) in ovs-vsctl show message
10.1. Symptom
You receive the Could not open network device dpdk0 (No such device) in ovs-vsctl show message.
10.2. Diagnosis
Red Hat supports a subset of the Poll Mode Drivers (PMDs) listed in DPDK Supported Hardware. Red Hat disabled unsupported PMDs in August of 2017.
Upstream PMDs might have security or performance issues. Therefore, a PMD needs to go through significant testing to pass Red Hat’s qualification tests.
You can see a list of all enabled PMDs in /usr/share/doc/openvswitch-<version>/README.DPDK-PMDS. This list might contain PMDs not supported by Red Hat. Poll Mode Drivers not listed in README.DPDK-PMDS are not supported.
10.3. Solution
The following example shows the supported PMDs for openvswitch-2.6.1:
This example shows the supported PMDs for openvswitch-2.9.0:
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