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collector/diskstats: add block device rotational
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Add metric to indicate if a device is rotational or not.

Fixes: #2956
Signed-off-by: Pranshu Srivastava <rexagod@gmail.com>
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@rexagod
rexagod committed Oct 20, 2024
1 parent 377f48c commit d868cae
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Showing 7 changed files with 291 additions and 52 deletions.
10 changes: 9 additions & 1 deletion collector/diskstats_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,7 @@ type diskstatsCollector struct {
deviceMapperInfoDesc typedFactorDesc
ataDescs map[string]typedFactorDesc
logger *slog.Logger
queueDescs []typedFactorDesc
getUdevDeviceProperties func(uint32, uint32) (udevInfo, error)
}

Expand Down Expand Up @@ -112,7 +113,7 @@ func NewDiskstatsCollector(logger *slog.Logger) (Collector, error) {
infoDesc: typedFactorDesc{
desc: prometheus.NewDesc(prometheus.BuildFQName(namespace, diskSubsystem, "info"),
"Info of /sys/block/<block_device>.",
[]string{"device", "major", "minor", "path", "wwn", "model", "serial", "revision"},
[]string{"device", "major", "minor", "path", "wwn", "model", "serial", "revision", "rotational"},
nil,
), valueType: prometheus.GaugeValue,
},
Expand Down Expand Up @@ -294,6 +295,12 @@ func (c *diskstatsCollector) Update(ch chan<- prometheus.Metric) error {
serial = info[udevIDSerialShort]
}

queueStats, err := c.fs.SysBlockDeviceQueueStats(dev)
// Block Device Queue stats may not exist for all devices.
if err != nil && !os.IsNotExist(err) {
c.logger.Debug("Failed to get block device queue stats", "device", dev, "err", err)
}

ch <- c.infoDesc.mustNewConstMetric(1.0, dev,
fmt.Sprint(stats.MajorNumber),
fmt.Sprint(stats.MinorNumber),
Expand All @@ -302,6 +309,7 @@ func (c *diskstatsCollector) Update(ch chan<- prometheus.Metric) error {
info[udevIDModel],
serial,
info[udevIDRevision],
strconv.FormatUint(queueStats.Rotational, 2),
)

statCount := stats.IoStatsCount - 3 // Total diskstats record count, less MajorNumber, MinorNumber and DeviceName
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30 changes: 15 additions & 15 deletions collector/diskstats_linux_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -113,21 +113,21 @@ node_disk_flush_requests_time_seconds_total{device="sdc"} 1.944
node_disk_flush_requests_total{device="sdc"} 1555
# HELP node_disk_info Info of /sys/block/<block_device>.
# TYPE node_disk_info gauge
node_disk_info{device="dm-0",major="252",minor="0",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-1",major="252",minor="1",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-2",major="252",minor="2",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-3",major="252",minor="3",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-4",major="252",minor="4",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-5",major="252",minor="5",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0",major="179",minor="0",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p1",major="179",minor="1",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p2",major="179",minor="2",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="nvme0n1",major="259",minor="0",model="SAMSUNG EHFTF55LURSY-000Y9",path="pci-0000:02:00.0-nvme-1",revision="4NBTUY95",serial="S252B6CU1HG3M1",wwn="eui.p3vbbiejx5aae2r3"} 1
node_disk_info{device="sda",major="8",minor="0",model="TOSHIBA_KSDB4U86",path="pci-0000:3b:00.0-sas-phy7-lun-0",revision="0102",serial="2160A0D5FVGG",wwn="0x7c72382b8de36a64"} 1
node_disk_info{device="sdb",major="8",minor="16",model="SuperMicro_SSD",path="pci-0000:00:1f.2-ata-1",revision="0R",serial="SMC0E1B87ABBB16BD84E",wwn="0xe1b87abbb16bd84e"} 1
node_disk_info{device="sdc",major="8",minor="32",model="INTEL_SSDS9X9SI0",path="pci-0000:00:1f.2-ata-4",revision="0100",serial="3EWB5Y25CWQWA7EH1U",wwn="0x58907ddc573a5de"} 1
node_disk_info{device="sr0",major="11",minor="0",model="Virtual_CDROM0",path="pci-0000:00:14.0-usb-0:1.1:1.0-scsi-0:0:0:0",revision="1.00",serial="AAAABBBBCCCC1",wwn=""} 1
node_disk_info{device="vda",major="254",minor="0",model="",path="pci-0000:00:06.0",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-0",major="252",minor="0",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-1",major="252",minor="1",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-2",major="252",minor="2",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-3",major="252",minor="3",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-4",major="252",minor="4",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-5",major="252",minor="5",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0",major="179",minor="0",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p1",major="179",minor="1",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p2",major="179",minor="2",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="nvme0n1",major="259",minor="0",model="SAMSUNG EHFTF55LURSY-000Y9",path="pci-0000:02:00.0-nvme-1",revision="4NBTUY95",rotational="0",serial="S252B6CU1HG3M1",wwn="eui.p3vbbiejx5aae2r3"} 1
node_disk_info{device="sda",major="8",minor="0",model="TOSHIBA_KSDB4U86",path="pci-0000:3b:00.0-sas-phy7-lun-0",revision="0102",rotational="1",serial="2160A0D5FVGG",wwn="0x7c72382b8de36a64"} 1
node_disk_info{device="sdb",major="8",minor="16",model="SuperMicro_SSD",path="pci-0000:00:1f.2-ata-1",revision="0R",rotational="0",serial="SMC0E1B87ABBB16BD84E",wwn="0xe1b87abbb16bd84e"} 1
node_disk_info{device="sdc",major="8",minor="32",model="INTEL_SSDS9X9SI0",path="pci-0000:00:1f.2-ata-4",revision="0100",rotational="0",serial="3EWB5Y25CWQWA7EH1U",wwn="0x58907ddc573a5de"} 1
node_disk_info{device="sr0",major="11",minor="0",model="Virtual_CDROM0",path="pci-0000:00:14.0-usb-0:1.1:1.0-scsi-0:0:0:0",revision="1.00",rotational="0",serial="AAAABBBBCCCC1",wwn=""} 1
node_disk_info{device="vda",major="254",minor="0",model="",path="pci-0000:00:06.0",revision="",rotational="0",serial="",wwn=""} 1
# HELP node_disk_io_now The number of I/Os currently in progress.
# TYPE node_disk_io_now gauge
node_disk_io_now{device="dm-0"} 0
Expand Down
30 changes: 15 additions & 15 deletions collector/fixtures/e2e-64k-page-output.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -488,21 +488,21 @@ node_disk_flush_requests_time_seconds_total{device="sdc"} 1.944
node_disk_flush_requests_total{device="sdc"} 1555
# HELP node_disk_info Info of /sys/block/<block_device>.
# TYPE node_disk_info gauge
node_disk_info{device="dm-0",major="252",minor="0",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-1",major="252",minor="1",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-2",major="252",minor="2",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-3",major="252",minor="3",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-4",major="252",minor="4",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-5",major="252",minor="5",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0",major="179",minor="0",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p1",major="179",minor="1",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p2",major="179",minor="2",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="nvme0n1",major="259",minor="0",model="SAMSUNG EHFTF55LURSY-000Y9",path="pci-0000:02:00.0-nvme-1",revision="4NBTUY95",serial="S252B6CU1HG3M1",wwn="eui.p3vbbiejx5aae2r3"} 1
node_disk_info{device="sda",major="8",minor="0",model="TOSHIBA_KSDB4U86",path="pci-0000:3b:00.0-sas-phy7-lun-0",revision="0102",serial="2160A0D5FVGG",wwn="0x7c72382b8de36a64"} 1
node_disk_info{device="sdb",major="8",minor="16",model="SuperMicro_SSD",path="pci-0000:00:1f.2-ata-1",revision="0R",serial="SMC0E1B87ABBB16BD84E",wwn="0xe1b87abbb16bd84e"} 1
node_disk_info{device="sdc",major="8",minor="32",model="INTEL_SSDS9X9SI0",path="pci-0000:00:1f.2-ata-4",revision="0100",serial="3EWB5Y25CWQWA7EH1U",wwn="0x58907ddc573a5de"} 1
node_disk_info{device="sr0",major="11",minor="0",model="Virtual_CDROM0",path="pci-0000:00:14.0-usb-0:1.1:1.0-scsi-0:0:0:0",revision="1.00",serial="AAAABBBBCCCC1",wwn=""} 1
node_disk_info{device="vda",major="254",minor="0",model="",path="pci-0000:00:06.0",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-0",major="252",minor="0",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-1",major="252",minor="1",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-2",major="252",minor="2",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-3",major="252",minor="3",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-4",major="252",minor="4",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-5",major="252",minor="5",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0",major="179",minor="0",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p1",major="179",minor="1",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p2",major="179",minor="2",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="nvme0n1",major="259",minor="0",model="SAMSUNG EHFTF55LURSY-000Y9",path="pci-0000:02:00.0-nvme-1",revision="4NBTUY95",rotational="0",serial="S252B6CU1HG3M1",wwn="eui.p3vbbiejx5aae2r3"} 1
node_disk_info{device="sda",major="8",minor="0",model="TOSHIBA_KSDB4U86",path="pci-0000:3b:00.0-sas-phy7-lun-0",revision="0102",rotational="1",serial="2160A0D5FVGG",wwn="0x7c72382b8de36a64"} 1
node_disk_info{device="sdb",major="8",minor="16",model="SuperMicro_SSD",path="pci-0000:00:1f.2-ata-1",revision="0R",rotational="0",serial="SMC0E1B87ABBB16BD84E",wwn="0xe1b87abbb16bd84e"} 1
node_disk_info{device="sdc",major="8",minor="32",model="INTEL_SSDS9X9SI0",path="pci-0000:00:1f.2-ata-4",revision="0100",rotational="0",serial="3EWB5Y25CWQWA7EH1U",wwn="0x58907ddc573a5de"} 1
node_disk_info{device="sr0",major="11",minor="0",model="Virtual_CDROM0",path="pci-0000:00:14.0-usb-0:1.1:1.0-scsi-0:0:0:0",revision="1.00",rotational="0",serial="AAAABBBBCCCC1",wwn=""} 1
node_disk_info{device="vda",major="254",minor="0",model="",path="pci-0000:00:06.0",revision="",rotational="0",serial="",wwn=""} 1
# HELP node_disk_io_now The number of I/Os currently in progress.
# TYPE node_disk_io_now gauge
node_disk_io_now{device="dm-0"} 0
Expand Down
30 changes: 15 additions & 15 deletions collector/fixtures/e2e-output.txt
View file
Original file line number Diff line number Diff line change
Expand Up @@ -510,21 +510,21 @@ node_disk_flush_requests_time_seconds_total{device="sdc"} 1.944
node_disk_flush_requests_total{device="sdc"} 1555
# HELP node_disk_info Info of /sys/block/<block_device>.
# TYPE node_disk_info gauge
node_disk_info{device="dm-0",major="252",minor="0",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-1",major="252",minor="1",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-2",major="252",minor="2",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-3",major="252",minor="3",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-4",major="252",minor="4",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-5",major="252",minor="5",model="",path="",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0",major="179",minor="0",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p1",major="179",minor="1",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p2",major="179",minor="2",model="",path="platform-df2969f3.mmc",revision="",serial="",wwn=""} 1
node_disk_info{device="nvme0n1",major="259",minor="0",model="SAMSUNG EHFTF55LURSY-000Y9",path="pci-0000:02:00.0-nvme-1",revision="4NBTUY95",serial="S252B6CU1HG3M1",wwn="eui.p3vbbiejx5aae2r3"} 1
node_disk_info{device="sda",major="8",minor="0",model="TOSHIBA_KSDB4U86",path="pci-0000:3b:00.0-sas-phy7-lun-0",revision="0102",serial="2160A0D5FVGG",wwn="0x7c72382b8de36a64"} 1
node_disk_info{device="sdb",major="8",minor="16",model="SuperMicro_SSD",path="pci-0000:00:1f.2-ata-1",revision="0R",serial="SMC0E1B87ABBB16BD84E",wwn="0xe1b87abbb16bd84e"} 1
node_disk_info{device="sdc",major="8",minor="32",model="INTEL_SSDS9X9SI0",path="pci-0000:00:1f.2-ata-4",revision="0100",serial="3EWB5Y25CWQWA7EH1U",wwn="0x58907ddc573a5de"} 1
node_disk_info{device="sr0",major="11",minor="0",model="Virtual_CDROM0",path="pci-0000:00:14.0-usb-0:1.1:1.0-scsi-0:0:0:0",revision="1.00",serial="AAAABBBBCCCC1",wwn=""} 1
node_disk_info{device="vda",major="254",minor="0",model="",path="pci-0000:00:06.0",revision="",serial="",wwn=""} 1
node_disk_info{device="dm-0",major="252",minor="0",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-1",major="252",minor="1",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-2",major="252",minor="2",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-3",major="252",minor="3",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-4",major="252",minor="4",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="dm-5",major="252",minor="5",model="",path="",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0",major="179",minor="0",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p1",major="179",minor="1",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="mmcblk0p2",major="179",minor="2",model="",path="platform-df2969f3.mmc",revision="",rotational="0",serial="",wwn=""} 1
node_disk_info{device="nvme0n1",major="259",minor="0",model="SAMSUNG EHFTF55LURSY-000Y9",path="pci-0000:02:00.0-nvme-1",revision="4NBTUY95",rotational="0",serial="S252B6CU1HG3M1",wwn="eui.p3vbbiejx5aae2r3"} 1
node_disk_info{device="sda",major="8",minor="0",model="TOSHIBA_KSDB4U86",path="pci-0000:3b:00.0-sas-phy7-lun-0",revision="0102",rotational="1",serial="2160A0D5FVGG",wwn="0x7c72382b8de36a64"} 1
node_disk_info{device="sdb",major="8",minor="16",model="SuperMicro_SSD",path="pci-0000:00:1f.2-ata-1",revision="0R",rotational="0",serial="SMC0E1B87ABBB16BD84E",wwn="0xe1b87abbb16bd84e"} 1
node_disk_info{device="sdc",major="8",minor="32",model="INTEL_SSDS9X9SI0",path="pci-0000:00:1f.2-ata-4",revision="0100",rotational="0",serial="3EWB5Y25CWQWA7EH1U",wwn="0x58907ddc573a5de"} 1
node_disk_info{device="sr0",major="11",minor="0",model="Virtual_CDROM0",path="pci-0000:00:14.0-usb-0:1.1:1.0-scsi-0:0:0:0",revision="1.00",rotational="0",serial="AAAABBBBCCCC1",wwn=""} 1
node_disk_info{device="vda",major="254",minor="0",model="",path="pci-0000:00:06.0",revision="",rotational="0",serial="",wwn=""} 1
# HELP node_disk_io_now The number of I/Os currently in progress.
# TYPE node_disk_io_now gauge
node_disk_io_now{device="dm-0"} 0
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