add NVMe drive info [model num, serial num, drive temp. etc.] (#10613)

* add NVMe drive info [model num, serial num, drive temp. etc.]
* Ignore fuse partitions
* Add the nvme logic only for linux
* Move smart/nvme structs to a separate file

Co-authored-by: wlan0 <sidharthamn@gmail.com>

pkg/madmin/obd_linux.go

@@ -0,0 +1,43 @@
+// +build linux
+
+/*
+ * MinIO Cloud Storage, (C) 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 madmin
+
+import (
+	smart "github.com/minio/minio/pkg/smart"
+	diskhw "github.com/shirou/gopsutil/disk"
+)
+
+// ServerDiskHwOBDInfo - Includes usage counters, disk counters and partitions
+type ServerDiskHwOBDInfo struct {
+	Addr       string                           `json:"addr"`
+	Usage      []*diskhw.UsageStat              `json:"usages,omitempty"`
+	Partitions []PartitionStat                  `json:"partitions,omitempty"`
+	Counters   map[string]diskhw.IOCountersStat `json:"counters,omitempty"`
+	Error      string                           `json:"error,omitempty"`
+}
+
+// PartitionStat - includes data from both shirou/psutil.diskHw.PartitionStat as well as SMART data
+type PartitionStat struct {
+	Device     string     `json:"device"`
+	Mountpoint string     `json:"mountpoint,omitempty"`
+	Fstype     string     `json:"fstype,omitempty"`
+	Opts       string     `json:"opts,omitempty"`
+	SmartInfo  smart.Info `json:"smartInfo,omitempty"`
+}