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// +build linux
/*
* MinIO Cloud Storage, (C) 2016-2020 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package smart
import (
"bytes"
"encoding/binary"
"fmt"
"regexp"
"strings"
"unsafe"
"github.com/dswarbrick/smart/drivedb"
"github.com/dswarbrick/smart/ioctl"
"github.com/dswarbrick/smart/scsi"
"github.com/dswarbrick/smart/utils"
"gopkg.in/yaml.v2"
)
// GetInfo - gets info about device
func GetInfo(device string) (Info, error) {
info := Info{
Device: device,
}
var db drivedb.DriveDb
dec := yaml.NewDecoder(bytes.NewBuffer(MustAsset("drivedb.yaml")))
err := dec.Decode(&db)
if err != nil {
return info, err
}
for i, d := range db.Drives {
db.Drives[i].CompiledRegexp, _ = regexp.Compile(d.ModelRegex)
}
if strings.HasPrefix(device, "/dev/nvme") {
d := NewNVMeDevice(device)
if err := d.Open(); err != nil {
return info, err
}
nvmeInfo, err := getNvmeInfo(d)
if err != nil {
return info, err
}
info.Nvme = nvmeInfo
return info, nil
}
d, err := scsi.OpenSCSIAutodetect(device)
if err != nil {
return info, err
}
switch dev := d.(type) {
case *scsi.SCSIDevice:
scsiInfo, err := getScsiInfo(dev)
if err != nil {
return info, err
}
info.Scsi = scsiInfo
case *scsi.SATDevice:
ataInfo, err := getAtaInfo(dev)
if err != nil {
return info, err
}
info.Ata = ataInfo
}
return info, nil
}
func getNvmeInfo(d *NVMeDevice) (*NvmeInfo, error) {
buf := make([]byte, 4096)
nvmeInfo := &NvmeInfo{}
cmd := nvmePassthruCommand{
opcode: NvmeAdminIdentify,
nsid: 0, // Namespace 0, since we are identifying the controller
addr: uint64(uintptr(unsafe.Pointer(&buf[0]))),
dataLen: uint32(len(buf)),
cdw10: 1, // Identify controller
}
if err := ioctl.Ioctl(uintptr(d.fd), nvmeIoctlAdminCmd, uintptr(unsafe.Pointer(&cmd))); err != nil {
return nvmeInfo, err
}
var controller nvmeIdentController
binary.Read(bytes.NewBuffer(buf[:]), utils.NativeEndian, &controller)
nvmeInfo.VendorID = strings.TrimSpace(fmt.Sprintf("%#04x", controller.VendorID))
nvmeInfo.ModelNum = strings.TrimSpace(fmt.Sprintf("%s", controller.ModelNumber))
nvmeInfo.SerialNum = strings.TrimSpace(fmt.Sprintf("%s", controller.SerialNumber))
nvmeInfo.FirmwareVersion = strings.TrimSpace(fmt.Sprintf("%s", controller.Firmware))
nvmeInfo.MaxDataTransferPages = 1 << controller.Mdts
buf2 := make([]byte, 512)
// Read SMART log
if err := d.readLogPage(0x02, &buf2); err != nil {
return nvmeInfo, err
}
var sl nvmeSMARTLog
binary.Read(bytes.NewBuffer(buf2[:]), utils.NativeEndian, &sl)
unitsRead := le128ToBigInt(sl.DataUnitsRead)
unitsWritten := le128ToBigInt(sl.DataUnitsWritten)
nvmeInfo.CriticalWarning = fmt.Sprintf("%x", sl.CritWarning)
nvmeInfo.Temperature = fmt.Sprintf("%d Celsius",
((uint16(sl.Temperature[1])<<8)|uint16(sl.Temperature[0]))-273) // Kelvin to degrees Celsius
nvmeInfo.SpareAvailable = fmt.Sprintf("%d%%", sl.AvailSpare)
nvmeInfo.SpareThreshold = fmt.Sprintf("%d%%", sl.SpareThresh)
nvmeInfo.DataUnitsReadBytes = unitsRead
nvmeInfo.DataUnitsWrittenBytes = unitsWritten
nvmeInfo.HostReadCommands = le128ToBigInt(sl.HostReads)
nvmeInfo.HostWriteCommands = le128ToBigInt(sl.HostWrites)
nvmeInfo.ControllerBusyTime = le128ToBigInt(sl.CtrlBusyTime)
nvmeInfo.PowerCycles = le128ToBigInt(sl.PowerCycles)
nvmeInfo.PowerOnHours = le128ToBigInt(sl.PowerOnHours)
nvmeInfo.UnsafeShutdowns = le128ToBigInt(sl.UnsafeShutdowns)
nvmeInfo.MediaAndDataIntegrityErrors = le128ToBigInt(sl.MediaErrors)
return nvmeInfo, nil
}
func getScsiInfo(d *scsi.SCSIDevice) (*ScsiInfo, error) {
return &ScsiInfo{}, nil
}
func getAtaInfo(d *scsi.SATDevice) (*AtaInfo, error) {
return &AtaInfo{}, nil
}