forked from rook/rook
145 lines
3.5 KiB
Go
145 lines
3.5 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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 clusterd
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import (
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"regexp"
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"strconv"
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"github.com/coreos/pkg/capnslog"
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"github.com/rook/rook/pkg/util/exec"
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"github.com/rook/rook/pkg/util/sys"
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)
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var (
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logger = capnslog.NewPackageLogger("github.com/rook/rook", "inventory")
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isRBD = regexp.MustCompile("^rbd[0-9]+p?[0-9]{0,}$")
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)
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type LocalDisk struct {
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Name string `json:"name"`
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ID string `json:"id"`
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UUID string `json:"uuid"`
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Size uint64 `json:"size"`
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Rotational bool `json:"rotational"`
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Readonly bool `json:"readonly"`
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FileSystem string `json:"fileSystem"`
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MountPoint string `json:"mountPoint"`
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Type string `json:"type"`
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Parent string `json:"parent"`
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HasChildren bool `json:"hasChildren"`
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Empty bool `json:"empty"`
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}
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func GetAvailableDevices(devices []*LocalDisk) []string {
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var available []string
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for _, device := range devices {
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logger.Debugf("Evaluating device %+v", device)
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if getDeviceEmpty(device) {
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logger.Debugf("Available device: %s", device.Name)
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available = append(available, device.Name)
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}
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}
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return available
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}
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// check whether a device is completely empty
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func getDeviceEmpty(device *LocalDisk) bool {
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return device.Parent == "" && device.Type == sys.DiskType && device.FileSystem == ""
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}
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func ignoreDevice(d string) bool {
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return isRBD.MatchString(d)
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}
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// Discover all the details of devices available on the local node
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func DiscoverDevices(executor exec.Executor) ([]*LocalDisk, error) {
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var disks []*LocalDisk
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devices, err := sys.ListDevices(executor)
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if err != nil {
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return nil, err
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}
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for _, d := range devices {
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if ignoreDevice(d) {
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// skip device
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continue
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}
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diskProps, err := sys.GetDeviceProperties(d, executor)
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if err != nil {
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logger.Warningf("skipping device %s: %+v", d, err)
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continue
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}
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diskType, ok := diskProps["TYPE"]
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if !ok || (diskType != sys.SSDType && diskType != sys.DiskType && diskType != sys.PartType) {
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// unsupported disk type, just continue
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continue
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}
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// get the UUID for disks
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var diskUUID string
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if diskType != sys.PartType {
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diskUUID, err = sys.GetDiskUUID(d, executor)
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if err != nil {
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logger.Warningf("skipping device %s with an unknown uuid. %+v", d, err)
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continue
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}
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}
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fs, err := sys.GetDeviceFilesystems(d, executor)
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if err != nil {
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return nil, err
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}
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disk := &LocalDisk{Name: d, UUID: diskUUID, FileSystem: fs}
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if val, ok := diskProps["TYPE"]; ok {
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disk.Type = val
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}
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if val, ok := diskProps["SIZE"]; ok {
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if size, err := strconv.ParseUint(val, 10, 64); err == nil {
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disk.Size = size
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}
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}
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if val, ok := diskProps["ROTA"]; ok {
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if rotates, err := strconv.ParseBool(val); err == nil {
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disk.Rotational = rotates
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}
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}
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if val, ok := diskProps["RO"]; ok {
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if ro, err := strconv.ParseBool(val); err == nil {
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disk.Readonly = ro
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}
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}
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if val, ok := diskProps["PKNAME"]; ok {
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disk.Parent = val
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}
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disk.Empty = getDeviceEmpty(disk)
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disks = append(disks, disk)
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}
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return disks, nil
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}
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