Disks: eMMC is one device, not three, and reports wear from its own registers
mmcblkNboot0/boot1/rpmb are hardware areas of the chip; hide them on Disks and Dashboard. Badge eMMC/SD instead of SSD. smartctl cannot talk to MMC, so read life_time and pre_eol_info from /sys instead of showing its error. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
Mitchell-Johnson
co-authored by
Claude Fable 5.1
Claude Fable 5.1
parent
488d929733
commit
232163ff4c
+82
-23
@@ -38,7 +38,7 @@ type Part struct {
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type Device struct {
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Name string `json:"name"`
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Kind string `json:"kind"` // nvme | ssd | hdd | usb | other
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Kind string `json:"kind"` // nvme | ssd | hdd | usb | emmc | sd | other
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Model string `json:"model,omitempty"`
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Vendor string `json:"vendor,omitempty"`
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Serial string `json:"serial,omitempty"`
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@@ -88,19 +88,24 @@ func Devices(ctx context.Context) ([]Device, error) {
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}
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devs := []Device{}
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for _, n := range root.Blockdevices {
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if n.Type != "disk" || n.Size == 0 || strings.HasPrefix(n.Name, "zd") {
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if n.Type != "disk" || n.Size == 0 || strings.HasPrefix(n.Name, "zd") || mmcAreaRe.MatchString(n.Name) {
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continue
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}
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d := Device{Name: n.Name, Model: str(n.Model), Vendor: str(n.Vendor), Serial: str(n.Serial), Tran: str(n.Tran),
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Size: n.Size, Rotational: n.Rota, Removable: n.RM, Temp: blockTemp(n.Name), Parts: []Part{}}
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switch {
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case strings.HasPrefix(n.Name, "mmcblk"):
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d.Kind = mmcKind(n.Name)
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if d.Model == "" {
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d.Model = strings.TrimSpace(readStrFile("/sys/block/" + n.Name + "/device/name"))
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}
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case d.Tran == "usb":
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d.Kind = "usb"
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case d.Tran == "nvme" || strings.HasPrefix(n.Name, "nvme"):
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d.Kind = "nvme"
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case n.Rota:
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d.Kind = "hdd"
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case d.Tran == "sata" || d.Tran == "sas" || strings.HasPrefix(n.Name, "sd") || strings.HasPrefix(n.Name, "mmcblk"):
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case d.Tran == "sata" || d.Tran == "sas" || strings.HasPrefix(n.Name, "sd"):
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d.Kind = "ssd"
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default:
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d.Kind = "other"
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@@ -199,6 +204,48 @@ func sysBlockDevices() []lsblkNode {
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return out
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}
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// An eMMC chip's boot and RPMB areas are hardware regions of the same chip, not drives;
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// the kernel lists them as disks of their own (mmcblk0boot0, mmcblk0boot1, mmcblk0rpmb).
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var mmcAreaRe = regexp.MustCompile(`^mmcblk\d+(boot\d+|rpmb|gp\d+)$`)
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func mmcKind(name string) string {
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if strings.TrimSpace(readStrFile("/sys/block/"+name+"/device/type")) == "MMC" {
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return "emmc"
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}
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return "sd"
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}
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// mmcHealth is the eMMC answer to SMART: the chip's own wear and end-of-life registers,
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// which the kernel publishes in /sys. SD cards have neither; smartctl speaks to neither.
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func mmcHealth(s Smart) Smart {
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dir := "/sys/block/" + s.Device + "/device/"
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s.Available, s.Supported = true, true
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s.SelfTestNote = "not a feature of eMMC or SD"
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s.Serial = strings.TrimSpace(readStrFile(dir + "serial"))
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s.Firmware = strings.TrimSpace(readStrFile(dir + "fwrev"))
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s.Model = strings.TrimSpace(readStrFile(dir + "name"))
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hex := func(v string) int { n, _ := strconv.ParseInt(strings.TrimPrefix(v, "0x"), 16, 32); return int(n) }
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life := strings.Fields(readStrFile(dir + "life_time"))
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eol := strings.TrimSpace(readStrFile(dir + "pre_eol_info"))
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if len(life) != 2 || eol == "" {
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s.Error = "This card reports no health data (SD cards don't; eMMC 5.0 and later does)."
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return s
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}
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m := &MMCHealth{LifeA: hex(life[0]), LifeB: hex(life[1]), PreEOL: hex(eol)}
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s.MMC = m
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ok := m.PreEOL <= 1 && m.LifeA < 10 && m.LifeB < 10
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s.Passed = &ok
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if m.PreEOL == 2 {
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s.Warnings = append(s.Warnings, "80% of reserved blocks consumed")
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} else if m.PreEOL >= 3 {
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s.Warnings = append(s.Warnings, "90% of reserved blocks consumed — replace soon")
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}
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if m.LifeA >= 10 || m.LifeB >= 10 {
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s.Warnings = append(s.Warnings, "estimated lifetime reached")
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}
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return s
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}
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var nsRe = regexp.MustCompile(`^(nvme\d+)n\d+$`)
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// foldNVMe merges nvme0n1, nvme0n2, … into one physical device "nvme0": one SSD, one
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@@ -318,26 +365,35 @@ type Attr struct {
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}
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type Smart struct {
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Device string `json:"device"`
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Available bool `json:"available"` // smartctl installed
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Supported bool `json:"supported"` // device answered
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Standby bool `json:"standby"` // spun down; not read
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Passed *bool `json:"passed"`
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Temp int `json:"temp,omitempty"`
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PowerOnHours int `json:"power_on_hours,omitempty"`
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PowerCycles int `json:"power_cycles,omitempty"`
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Model string `json:"model,omitempty"`
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Serial string `json:"serial,omitempty"`
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Firmware string `json:"firmware,omitempty"`
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Attrs []Attr `json:"attrs"`
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NVMe *NVMeLog `json:"nvme,omitempty"`
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SelfTest string `json:"self_test,omitempty"`
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SelfTestPct int `json:"self_test_remaining,omitempty"`
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SelfTestOK bool `json:"self_test_supported"`
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SelfTestNote string `json:"self_test_note,omitempty"`
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Warnings []string `json:"warnings"`
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Error string `json:"error,omitempty"`
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FetchedAt int64 `json:"fetched_at"`
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Device string `json:"device"`
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Available bool `json:"available"` // smartctl installed
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Supported bool `json:"supported"` // device answered
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Standby bool `json:"standby"` // spun down; not read
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Passed *bool `json:"passed"`
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Temp int `json:"temp,omitempty"`
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PowerOnHours int `json:"power_on_hours,omitempty"`
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PowerCycles int `json:"power_cycles,omitempty"`
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Model string `json:"model,omitempty"`
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Serial string `json:"serial,omitempty"`
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Firmware string `json:"firmware,omitempty"`
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Attrs []Attr `json:"attrs"`
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NVMe *NVMeLog `json:"nvme,omitempty"`
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MMC *MMCHealth `json:"mmc,omitempty"`
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SelfTest string `json:"self_test,omitempty"`
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SelfTestPct int `json:"self_test_remaining,omitempty"`
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SelfTestOK bool `json:"self_test_supported"`
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SelfTestNote string `json:"self_test_note,omitempty"`
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Warnings []string `json:"warnings"`
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Error string `json:"error,omitempty"`
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FetchedAt int64 `json:"fetched_at"`
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}
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// MMCHealth is the eMMC EXT_CSD wear report. Life values are tenths: 1 = 0–10% of rated
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// life used, 10 = 90–100%, 11 = exceeded, 0 = not reported. A is the SLC area, B the MLC.
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type MMCHealth struct {
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LifeA int `json:"life_a"`
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LifeB int `json:"life_b"`
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PreEOL int `json:"pre_eol"` // 1 normal · 2 warning · 3 urgent
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}
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type NVMeLog struct {
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@@ -437,6 +493,9 @@ func (m *Manager) Smart(ctx context.Context, dev string, force bool) Smart {
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s.Error = "unknown device"
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return s
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}
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if strings.HasPrefix(dev, "mmcblk") {
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return mmcHealth(s)
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}
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if !m.HasSmartctl() {
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return s
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}
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