559f83a93d
The OpenStack cloud provider retrieves mounted Cinder volume paths by looking in /dev/disk/by-id, expecting the disk serial IDs (e.g. SCSI ID) to include the volume ID. The issue is that not all hypervisors are able to expose this. For example, Hyper-V will just preserve the original Cinder volume lun SCSI ID (without setting the volume id). For this reason, disk path lookups will fail. In order to be able to leverage Hyper-V based OpenStack providers, as a fallback, we're querying the metadata service, searching for disk device metadata. Note that starting with Nova Queens, the Hyper-V driver always provides disk address information through the instance metadata.
112 lines
2.8 KiB
Go
112 lines
2.8 KiB
Go
/*
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Copyright 2016 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 openstack
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import (
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"strings"
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"testing"
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)
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var FakeMetadata = Metadata{
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Uuid: "83679162-1378-4288-a2d4-70e13ec132aa",
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Name: "test",
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AvailabilityZone: "nova",
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}
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func SetMetadataFixture(value *Metadata) {
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metadataCache = value
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}
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func ClearMetadata() {
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metadataCache = nil
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}
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func TestParseMetadata(t *testing.T) {
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_, err := parseMetadata(strings.NewReader("bogus"))
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if err == nil {
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t.Errorf("Should fail when bad data is provided: %s", err)
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}
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data := strings.NewReader(`
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{
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"availability_zone": "nova",
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"files": [
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{
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"content_path": "/content/0000",
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"path": "/etc/network/interfaces"
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},
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{
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"content_path": "/content/0001",
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"path": "known_hosts"
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}
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],
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"hostname": "test.novalocal",
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"launch_index": 0,
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"name": "test",
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"meta": {
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"role": "webservers",
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"essential": "false"
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},
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"public_keys": {
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"mykey": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDBqUfVvCSez0/Wfpd8dLLgZXV9GtXQ7hnMN+Z0OWQUyebVEHey1CXuin0uY1cAJMhUq8j98SiW+cU0sU4J3x5l2+xi1bodDm1BtFWVeLIOQINpfV1n8fKjHB+ynPpe1F6tMDvrFGUlJs44t30BrujMXBe8Rq44cCk6wqyjATA3rQ== Generated by Nova\n"
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},
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"uuid": "83679162-1378-4288-a2d4-70e13ec132aa",
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"devices": [
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{
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"bus": "scsi",
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"serial": "6df1888b-f373-41cf-b960-3786e60a28ef",
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"tags": ["fake_tag"],
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"type": "disk",
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"address": "0:0:0:0"
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}
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]
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}
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`)
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md, err := parseMetadata(data)
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if err != nil {
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t.Fatalf("Should succeed when provided with valid data: %s", err)
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}
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if md.Name != "test" {
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t.Errorf("incorrect name: %s", md.Name)
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}
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if md.Uuid != "83679162-1378-4288-a2d4-70e13ec132aa" {
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t.Errorf("incorrect uuid: %s", md.Uuid)
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}
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if md.AvailabilityZone != "nova" {
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t.Errorf("incorrect az: %s", md.AvailabilityZone)
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}
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if len(md.Devices) != 1 {
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t.Errorf("expecting to find 1 device, found %d", len(md.Devices))
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}
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if md.Devices[0].Bus != "scsi" {
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t.Errorf("incorrect disk bus: %s", md.Devices[0].Bus)
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}
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if md.Devices[0].Address != "0:0:0:0" {
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t.Errorf("incorrect disk address: %s", md.Devices[0].Address)
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}
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if md.Devices[0].Type != "disk" {
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t.Errorf("incorrect device type: %s", md.Devices[0].Type)
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}
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}
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