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54c7d8fbb1
The Topology Manager e2e tests wants to run on real multi-NUMA system and want to consume real devices supported by device plugins; SRIOV devices happen to be the most commonly available of such devices. CI machines aren't multi NUMA nor expose SRIOV devices, so the biggest portion of the tests will just skip, and we need to keep it like this until we figure out how to enable these features. However, some organizations can and want to run the testsuite on bare metal; in this case, the current test will skip (not fail) with misconfigured boxes, and this reports a misleading result. It will be much better to fail if the test preconditions aren't met. To satisfy both needs, we add an option, controlled by an environment variable, to fail (not skip) if the machine on which the test run doesn't meet the expectations (multi-NUMA, 4+ cores per NUMA cell, expose SRIOV VFs). We keep the old behaviour as default to keep being CI friendly. Signed-off-by: Francesco Romani <fromani@redhat.com>
37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
//go:build linux
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// +build linux
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/*
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Copyright 2021 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package e2enode
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import (
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"os/exec"
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"strconv"
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"strings"
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)
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// countSRIOVDevices provides a rough estimate of SRIOV Virtual Functions available on the system.
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// This is a rough check we use to rule out unsuitable systems, not to detect suitable systems.
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func countSRIOVDevices() (int, error) {
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outData, err := exec.Command("/bin/sh", "-c", "ls /sys/bus/pci/devices/*/physfn | wc -w").Output()
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if err != nil {
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return -1, err
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}
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return strconv.Atoi(strings.TrimSpace(string(outData)))
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}
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