Christoffer Martinsson 1e7f1616aa
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Complete disk collector rewrite with clean architecture
Replaced complex disk collector with simple lsblk → df → group workflow.
Supports both physical drives and mergerfs pools with unified metrics.
Eliminates configuration complexity through pure auto-discovery.

- Clean discovery pipeline using lsblk and df commands
- Physical drive grouping with filesystem children
- MergerFS pool detection with parity heuristics
- Unified metric generation for consistent dashboard display
- SMART data collection for temperature, wear, and health
2025-11-23 14:22:19 +01:00

1328 lines
55 KiB
Rust

use anyhow::Result;
use async_trait::async_trait;
use cm_dashboard_shared::{Metric, MetricValue, Status, StatusTracker, HysteresisThresholds};
use crate::config::DiskConfig;
use std::process::Command;
use std::time::Instant;
use std::fs;
use tracing::debug;
use super::{Collector, CollectorError};
/// Mount point information from /proc/mounts
#[derive(Debug, Clone)]
struct MountInfo {
device: String, // e.g., "/dev/sda1" or "/mnt/disk1:/mnt/disk2"
mount_point: String, // e.g., "/", "/srv/media"
fs_type: String, // e.g., "ext4", "xfs", "fuse.mergerfs"
}
/// Auto-discovered storage topology
#[derive(Debug, Clone)]
struct StorageTopology {
single_disks: Vec<MountInfo>,
mergerfs_pools: Vec<MergerfsPoolInfo>,
}
/// MergerFS pool information
#[derive(Debug, Clone)]
struct MergerfsPoolInfo {
mount_point: String, // e.g., "/srv/media"
data_members: Vec<String>, // e.g., ["/mnt/disk1", "/mnt/disk2"]
parity_disks: Vec<String>, // e.g., ["/mnt/parity"]
}
/// Information about a storage pool (mount point with underlying drives)
#[derive(Debug, Clone)]
struct StoragePool {
name: String, // e.g., "steampool", "root"
mount_point: String, // e.g., "/mnt/steampool", "/"
filesystem: String, // e.g., "mergerfs", "ext4", "zfs", "btrfs"
pool_type: StoragePoolType, // Enhanced pool type with configuration
size: String, // e.g., "2.5TB"
used: String, // e.g., "2.1TB"
available: String, // e.g., "400GB"
usage_percent: f32, // e.g., 85.0
underlying_drives: Vec<DriveInfo>, // Individual physical drives
pool_health: PoolHealth, // Overall pool health status
}
/// Enhanced storage pool types with specific configurations
#[derive(Debug, Clone)]
enum StoragePoolType {
Single, // Traditional single disk (legacy)
PhysicalDrive { // Physical drive with multiple filesystems
filesystems: Vec<String>, // Mount points on this drive
},
MergerfsPool { // MergerFS with optional parity
data_disks: Vec<String>, // Member disk names (sdb, sdd)
parity_disks: Vec<String>, // Parity disk names (sdc)
},
#[allow(dead_code)]
RaidArray { // Hardware RAID (future)
level: String, // "RAID1", "RAID5", etc.
member_disks: Vec<String>,
spare_disks: Vec<String>,
},
#[allow(dead_code)]
ZfsPool { // ZFS pool (future)
pool_name: String,
vdevs: Vec<String>,
}
}
/// Pool health status for redundant storage
#[derive(Debug, Clone, Copy, PartialEq)]
enum PoolHealth {
Healthy, // All drives OK, parity current
Degraded, // One drive failed or parity outdated, still functional
Critical, // Multiple failures, data at risk
#[allow(dead_code)]
Rebuilding, // Actively rebuilding/scrubbing (future: SnapRAID status integration)
Unknown, // Cannot determine status
}
/// Information about an individual physical drive
#[derive(Debug, Clone)]
struct DriveInfo {
device: String, // e.g., "sda", "nvme0n1"
health_status: String, // e.g., "PASSED", "FAILED"
temperature: Option<f32>, // e.g., 45.0°C
wear_level: Option<f32>, // e.g., 12.0% (for SSDs)
}
/// Disk usage collector for monitoring filesystem sizes
pub struct DiskCollector {
config: DiskConfig,
temperature_thresholds: HysteresisThresholds,
detected_devices: std::collections::HashMap<String, Vec<String>>, // mount_point -> devices
storage_topology: Option<StorageTopology>, // Auto-discovered storage layout
}
impl DiskCollector {
pub fn new(config: DiskConfig) -> Self {
// Create hysteresis thresholds for disk temperature from config
let temperature_thresholds = HysteresisThresholds::with_custom_gaps(
config.temperature_warning_celsius,
5.0, // 5°C gap for recovery
config.temperature_critical_celsius,
5.0, // 5°C gap for recovery
);
// Perform auto-discovery of storage topology
let storage_topology = match Self::auto_discover_storage() {
Ok(topology) => {
debug!("Auto-discovered storage topology: {} single disks, {} mergerfs pools",
topology.single_disks.len(), topology.mergerfs_pools.len());
Some(topology)
}
Err(e) => {
debug!("Failed to auto-discover storage topology: {}", e);
None
}
};
// Detect devices for discovered storage
let mut detected_devices = std::collections::HashMap::new();
if let Some(ref topology) = storage_topology {
// Add single disks
for disk in &topology.single_disks {
if let Ok(devices) = Self::detect_device_for_mount_point_static(&disk.mount_point) {
detected_devices.insert(disk.mount_point.clone(), devices);
}
}
// Add mergerfs pools and their members
for pool in &topology.mergerfs_pools {
// Detect devices for the pool itself
if let Ok(devices) = Self::detect_device_for_mount_point_static(&pool.mount_point) {
detected_devices.insert(pool.mount_point.clone(), devices);
}
// Detect devices for member disks
for member in &pool.data_members {
if let Ok(devices) = Self::detect_device_for_mount_point_static(member) {
detected_devices.insert(member.clone(), devices);
}
}
// Detect devices for parity disks
for parity in &pool.parity_disks {
if let Ok(devices) = Self::detect_device_for_mount_point_static(parity) {
detected_devices.insert(parity.clone(), devices);
}
}
}
} else {
// Fallback: use legacy filesystem config detection
for fs_config in &config.filesystems {
if fs_config.monitor {
if let Ok(devices) = Self::detect_device_for_mount_point_static(&fs_config.mount_point) {
detected_devices.insert(fs_config.mount_point.clone(), devices);
}
}
}
}
Self {
config,
temperature_thresholds,
detected_devices,
storage_topology,
}
}
/// Auto-discover storage topology by parsing system information
fn auto_discover_storage() -> Result<StorageTopology> {
let mounts = Self::parse_proc_mounts()?;
let mut single_disks = Vec::new();
let mut mergerfs_pools = Vec::new();
// Filter out unwanted filesystem types and mount points
let exclude_fs_types = ["tmpfs", "devtmpfs", "sysfs", "proc", "cgroup", "cgroup2", "devpts"];
let exclude_mount_prefixes = ["/proc", "/sys", "/dev", "/tmp", "/run"];
for mount in mounts {
// Skip excluded filesystem types
if exclude_fs_types.contains(&mount.fs_type.as_str()) {
continue;
}
// Skip excluded mount point prefixes
if exclude_mount_prefixes.iter().any(|prefix| mount.mount_point.starts_with(prefix)) {
continue;
}
match mount.fs_type.as_str() {
"fuse.mergerfs" => {
// Parse mergerfs pool
let data_members = Self::parse_mergerfs_sources(&mount.device);
let parity_disks = Self::detect_parity_disks(&data_members);
mergerfs_pools.push(MergerfsPoolInfo {
mount_point: mount.mount_point.clone(),
data_members,
parity_disks,
});
debug!("Discovered mergerfs pool at {}", mount.mount_point);
}
"ext4" | "xfs" | "btrfs" | "ntfs" | "vfat" => {
// Check if this mount is part of a mergerfs pool
let is_mergerfs_member = mergerfs_pools.iter()
.any(|pool| pool.data_members.contains(&mount.mount_point) ||
pool.parity_disks.contains(&mount.mount_point));
if !is_mergerfs_member {
debug!("Discovered single disk at {}", mount.mount_point);
single_disks.push(mount);
}
}
_ => {
debug!("Skipping unsupported filesystem type: {}", mount.fs_type);
}
}
}
Ok(StorageTopology {
single_disks,
mergerfs_pools,
})
}
/// Parse /proc/mounts to get all mount information
fn parse_proc_mounts() -> Result<Vec<MountInfo>> {
let mounts_content = fs::read_to_string("/proc/mounts")?;
let mut mounts = Vec::new();
for line in mounts_content.lines() {
let parts: Vec<&str> = line.split_whitespace().collect();
if parts.len() >= 3 {
mounts.push(MountInfo {
device: parts[0].to_string(),
mount_point: parts[1].to_string(),
fs_type: parts[2].to_string(),
});
}
}
Ok(mounts)
}
/// Parse mergerfs source string to extract member paths
fn parse_mergerfs_sources(source: &str) -> Vec<String> {
// MergerFS source format: "/mnt/disk1:/mnt/disk2:/mnt/disk3"
source.split(':')
.map(|s| s.trim().to_string())
.filter(|s| !s.is_empty())
.collect()
}
/// Detect potential parity disks based on data member heuristics
fn detect_parity_disks(data_members: &[String]) -> Vec<String> {
let mut parity_disks = Vec::new();
// Heuristic 1: Look for mount points with "parity" in the name
if let Ok(mounts) = Self::parse_proc_mounts() {
for mount in mounts {
if mount.mount_point.to_lowercase().contains("parity") &&
(mount.fs_type == "xfs" || mount.fs_type == "ext4") {
debug!("Detected parity disk by name: {}", mount.mount_point);
parity_disks.push(mount.mount_point);
}
}
}
// Heuristic 2: Look for sequential device pattern
// If data members are /mnt/disk1, /mnt/disk2, look for /mnt/disk* that's not in data
if parity_disks.is_empty() {
if let Some(pattern) = Self::extract_mount_pattern(data_members) {
if let Ok(mounts) = Self::parse_proc_mounts() {
for mount in mounts {
if mount.mount_point.starts_with(&pattern) &&
!data_members.contains(&mount.mount_point) &&
(mount.fs_type == "xfs" || mount.fs_type == "ext4") {
debug!("Detected parity disk by pattern: {}", mount.mount_point);
parity_disks.push(mount.mount_point);
}
}
}
}
}
parity_disks
}
/// Extract common mount point pattern from data members
fn extract_mount_pattern(data_members: &[String]) -> Option<String> {
if data_members.is_empty() {
return None;
}
// Find common prefix (e.g., "/mnt/disk" from "/mnt/disk1", "/mnt/disk2")
let first = &data_members[0];
if let Some(last_slash) = first.rfind('/') {
let base = &first[..last_slash + 1]; // Include the slash
// Check if all members share this base
if data_members.iter().all(|member| member.starts_with(base)) {
return Some(base.to_string());
}
}
None
}
/// Calculate disk temperature status using hysteresis thresholds
fn calculate_temperature_status(&self, metric_name: &str, temperature: f32, status_tracker: &mut StatusTracker) -> Status {
status_tracker.calculate_with_hysteresis(metric_name, temperature, &self.temperature_thresholds)
}
/// Get storage pools using auto-discovered topology or fallback to configuration
fn get_configured_storage_pools(&self) -> Result<Vec<StoragePool>> {
if let Some(ref topology) = self.storage_topology {
self.get_auto_discovered_storage_pools(topology)
} else {
self.get_legacy_configured_storage_pools()
}
}
/// Get storage pools from auto-discovered topology
fn get_auto_discovered_storage_pools(&self, topology: &StorageTopology) -> Result<Vec<StoragePool>> {
let mut storage_pools = Vec::new();
// Group single disks by physical drive for unified pool display
let grouped_disks = self.group_filesystems_by_physical_drive(&topology.single_disks)?;
// Process grouped single disks (each physical drive becomes a pool)
for (drive_name, filesystems) in grouped_disks {
// Create a unified pool for this physical drive
let pool = self.create_physical_drive_pool(&drive_name, &filesystems)?;
storage_pools.push(pool);
}
// IMPORTANT: Do not create individual filesystem pools when using auto-discovery
// All single disk filesystems should be grouped into physical drive pools above
// Process mergerfs pools (these remain as logical pools)
for pool_info in &topology.mergerfs_pools {
if let Ok((total_bytes, used_bytes)) = self.get_filesystem_info(&pool_info.mount_point) {
let available_bytes = total_bytes - used_bytes;
let usage_percent = if total_bytes > 0 {
(used_bytes as f64 / total_bytes as f64) * 100.0
} else { 0.0 };
let size = self.bytes_to_human_readable(total_bytes);
let used = self.bytes_to_human_readable(used_bytes);
let available = self.bytes_to_human_readable(available_bytes);
// Collect all member and parity drives
let mut all_drives = Vec::new();
// Add data member drives
for member in &pool_info.data_members {
if let Some(devices) = self.detected_devices.get(member) {
all_drives.extend(devices.clone());
}
}
// Add parity drives
for parity in &pool_info.parity_disks {
if let Some(devices) = self.detected_devices.get(parity) {
all_drives.extend(devices.clone());
}
}
let underlying_drives = self.get_drive_info_for_devices(&all_drives)?;
// Calculate pool health
let pool_health = self.calculate_mergerfs_pool_health(&pool_info.data_members, &pool_info.parity_disks, &underlying_drives);
// Generate pool name from mount point
let name = pool_info.mount_point.trim_start_matches('/').replace('/', "_");
storage_pools.push(StoragePool {
name,
mount_point: pool_info.mount_point.clone(),
filesystem: "fuse.mergerfs".to_string(),
pool_type: StoragePoolType::MergerfsPool {
data_disks: pool_info.data_members.iter()
.filter_map(|member| self.detected_devices.get(member).and_then(|devices| devices.first().cloned()))
.collect(),
parity_disks: pool_info.parity_disks.iter()
.filter_map(|parity| self.detected_devices.get(parity).and_then(|devices| devices.first().cloned()))
.collect(),
},
size,
used,
available,
usage_percent: usage_percent as f32,
underlying_drives,
pool_health,
});
debug!("Auto-discovered mergerfs pool: {} with {} data + {} parity disks",
pool_info.mount_point, pool_info.data_members.len(), pool_info.parity_disks.len());
}
}
Ok(storage_pools)
}
/// Group filesystems by their backing physical drive
fn group_filesystems_by_physical_drive(&self, filesystems: &[MountInfo]) -> Result<std::collections::HashMap<String, Vec<MountInfo>>> {
let mut grouped = std::collections::HashMap::new();
for fs in filesystems {
// Get the physical drive name for this mount point
if let Some(devices) = self.detected_devices.get(&fs.mount_point) {
if let Some(device_name) = devices.first() {
// Extract base drive name from detected device
let drive_name = Self::extract_base_device(device_name)
.unwrap_or_else(|| device_name.clone());
debug!("Grouping filesystem {} (device: {}) under drive: {}",
fs.mount_point, device_name, drive_name);
grouped.entry(drive_name).or_insert_with(Vec::new).push(fs.clone());
}
}
}
debug!("Filesystem grouping result: {} drives with filesystems: {:?}",
grouped.len(),
grouped.keys().collect::<Vec<_>>());
Ok(grouped)
}
/// Create a physical drive pool containing multiple filesystems
fn create_physical_drive_pool(&self, drive_name: &str, filesystems: &[MountInfo]) -> Result<StoragePool> {
if filesystems.is_empty() {
return Err(anyhow::anyhow!("No filesystems for drive {}", drive_name));
}
// Calculate total usage across all filesystems on this drive
let mut total_capacity = 0u64;
let mut total_used = 0u64;
for fs in filesystems {
if let Ok((capacity, used)) = self.get_filesystem_info(&fs.mount_point) {
total_capacity += capacity;
total_used += used;
}
}
let total_available = total_capacity.saturating_sub(total_used);
let usage_percent = if total_capacity > 0 {
(total_used as f64 / total_capacity as f64) * 100.0
} else { 0.0 };
// Get drive information for SMART data
let device_names = vec![drive_name.to_string()];
let underlying_drives = self.get_drive_info_for_devices(&device_names)?;
// Collect filesystem mount points for this drive
let filesystem_mount_points: Vec<String> = filesystems.iter()
.map(|fs| fs.mount_point.clone())
.collect();
Ok(StoragePool {
name: drive_name.to_string(),
mount_point: format!("(physical drive)"), // Special marker for physical drives
filesystem: "physical".to_string(),
pool_type: StoragePoolType::PhysicalDrive {
filesystems: filesystem_mount_points,
},
size: self.bytes_to_human_readable(total_capacity),
used: self.bytes_to_human_readable(total_used),
available: self.bytes_to_human_readable(total_available),
usage_percent: usage_percent as f32,
pool_health: if underlying_drives.iter().all(|d| d.health_status == "PASSED") {
PoolHealth::Healthy
} else {
PoolHealth::Critical
},
underlying_drives,
})
}
/// Calculate pool health specifically for mergerfs pools
fn calculate_mergerfs_pool_health(&self, data_members: &[String], parity_disks: &[String], drives: &[DriveInfo]) -> PoolHealth {
// Get device names for data and parity drives
let mut data_device_names = Vec::new();
let mut parity_device_names = Vec::new();
for member in data_members {
if let Some(devices) = self.detected_devices.get(member) {
data_device_names.extend(devices.clone());
}
}
for parity in parity_disks {
if let Some(devices) = self.detected_devices.get(parity) {
parity_device_names.extend(devices.clone());
}
}
let failed_data = drives.iter()
.filter(|d| data_device_names.contains(&d.device) && d.health_status != "PASSED")
.count();
let failed_parity = drives.iter()
.filter(|d| parity_device_names.contains(&d.device) && d.health_status != "PASSED")
.count();
match (failed_data, failed_parity) {
(0, 0) => PoolHealth::Healthy,
(1, 0) => PoolHealth::Degraded, // Can recover with parity
(0, 1) => PoolHealth::Degraded, // Lost parity protection
_ => PoolHealth::Critical, // Multiple failures
}
}
/// Fallback to legacy configuration-based storage pools
fn get_legacy_configured_storage_pools(&self) -> Result<Vec<StoragePool>> {
let mut storage_pools = Vec::new();
let mut processed_pools = std::collections::HashSet::new();
// Legacy implementation: use filesystem configuration
for fs_config in &self.config.filesystems {
if !fs_config.monitor {
continue;
}
let (pool_type, skip_in_single_mode) = self.determine_pool_type(&fs_config.storage_type);
// Skip member disks if they're part of a pool
if skip_in_single_mode {
continue;
}
// Check if this pool was already processed (in case of multiple member disks)
let pool_key = match &pool_type {
StoragePoolType::MergerfsPool { .. } => {
// For mergerfs pools, use the main mount point
if fs_config.fs_type == "fuse.mergerfs" {
fs_config.mount_point.clone()
} else {
continue; // Skip member disks
}
}
_ => fs_config.mount_point.clone()
};
if processed_pools.contains(&pool_key) {
continue;
}
processed_pools.insert(pool_key.clone());
// Get filesystem stats for the mount point
match self.get_filesystem_info(&fs_config.mount_point) {
Ok((total_bytes, used_bytes)) => {
let available_bytes = total_bytes - used_bytes;
let usage_percent = if total_bytes > 0 {
(used_bytes as f64 / total_bytes as f64) * 100.0
} else { 0.0 };
// Convert bytes to human-readable format
let size = self.bytes_to_human_readable(total_bytes);
let used = self.bytes_to_human_readable(used_bytes);
let available = self.bytes_to_human_readable(available_bytes);
// Get underlying drives based on pool type
let underlying_drives = self.get_pool_drives(&pool_type, &fs_config.mount_point)?;
// Calculate pool health
let pool_health = self.calculate_pool_health(&pool_type, &underlying_drives);
let drive_count = underlying_drives.len();
storage_pools.push(StoragePool {
name: fs_config.name.clone(),
mount_point: fs_config.mount_point.clone(),
filesystem: fs_config.fs_type.clone(),
pool_type: pool_type.clone(),
size,
used,
available,
usage_percent: usage_percent as f32,
underlying_drives,
pool_health,
});
debug!(
"Legacy configured storage pool '{}' ({:?}) at {} with {} drives, health: {:?}",
fs_config.name, pool_type, fs_config.mount_point, drive_count, pool_health
);
}
Err(e) => {
debug!(
"Failed to get filesystem info for storage pool '{}': {}",
fs_config.name, e
);
}
}
}
Ok(storage_pools)
}
/// Determine the storage pool type from configuration
fn determine_pool_type(&self, storage_type: &str) -> (StoragePoolType, bool) {
match storage_type {
"single" => (StoragePoolType::Single, false),
"mergerfs_pool" | "mergerfs" => {
// Find associated member disks
let data_disks = self.find_pool_member_disks("mergerfs_member");
let parity_disks = self.find_pool_member_disks("parity");
(StoragePoolType::MergerfsPool { data_disks, parity_disks }, false)
}
"mergerfs_member" => (StoragePoolType::Single, true), // Skip, part of pool
"parity" => (StoragePoolType::Single, true), // Skip, part of pool
"raid1" | "raid5" | "raid6" => {
let member_disks = self.find_pool_member_disks(&format!("{}_member", storage_type));
(StoragePoolType::RaidArray {
level: storage_type.to_uppercase(),
member_disks,
spare_disks: Vec::new()
}, false)
}
_ => (StoragePoolType::Single, false) // Default to single
}
}
/// Find member disks for a specific storage type
fn find_pool_member_disks(&self, member_type: &str) -> Vec<String> {
let mut member_disks = Vec::new();
for fs_config in &self.config.filesystems {
if fs_config.storage_type == member_type && fs_config.monitor {
// Get device names for this mount point
if let Some(devices) = self.detected_devices.get(&fs_config.mount_point) {
member_disks.extend(devices.clone());
}
}
}
member_disks
}
/// Get drive information for a specific pool type
fn get_pool_drives(&self, pool_type: &StoragePoolType, mount_point: &str) -> Result<Vec<DriveInfo>> {
match pool_type {
StoragePoolType::Single => {
// Single disk - use detected devices for this mount point
let device_names = self.detected_devices.get(mount_point).cloned().unwrap_or_default();
self.get_drive_info_for_devices(&device_names)
}
StoragePoolType::PhysicalDrive { .. } => {
// Physical drive - get drive info for the drive directly (mount_point not used)
let device_names = vec![mount_point.to_string()];
self.get_drive_info_for_devices(&device_names)
}
StoragePoolType::MergerfsPool { data_disks, parity_disks } => {
// Mergerfs pool - collect all member drives
let mut all_disks = data_disks.clone();
all_disks.extend(parity_disks.clone());
self.get_drive_info_for_devices(&all_disks)
}
StoragePoolType::RaidArray { member_disks, spare_disks, .. } => {
// RAID array - collect member and spare drives
let mut all_disks = member_disks.clone();
all_disks.extend(spare_disks.clone());
self.get_drive_info_for_devices(&all_disks)
}
StoragePoolType::ZfsPool { .. } => {
// ZFS pool - use detected devices (future implementation)
let device_names = self.detected_devices.get(mount_point).cloned().unwrap_or_default();
self.get_drive_info_for_devices(&device_names)
}
}
}
/// Calculate pool health based on drive status and pool type
fn calculate_pool_health(&self, pool_type: &StoragePoolType, drives: &[DriveInfo]) -> PoolHealth {
match pool_type {
StoragePoolType::Single => {
// Single disk - health is just the drive health
if drives.is_empty() {
PoolHealth::Unknown
} else if drives.iter().all(|d| d.health_status == "PASSED") {
PoolHealth::Healthy
} else {
PoolHealth::Critical
}
}
StoragePoolType::PhysicalDrive { .. } => {
// Physical drive - health is just the drive health (similar to Single)
if drives.is_empty() {
PoolHealth::Unknown
} else if drives.iter().all(|d| d.health_status == "PASSED") {
PoolHealth::Healthy
} else {
PoolHealth::Critical
}
}
StoragePoolType::MergerfsPool { data_disks, parity_disks } => {
let failed_data = drives.iter()
.filter(|d| data_disks.contains(&d.device) && d.health_status != "PASSED")
.count();
let failed_parity = drives.iter()
.filter(|d| parity_disks.contains(&d.device) && d.health_status != "PASSED")
.count();
match (failed_data, failed_parity) {
(0, 0) => PoolHealth::Healthy,
(1, 0) => PoolHealth::Degraded, // Can recover with parity
(0, 1) => PoolHealth::Degraded, // Lost parity protection
_ => PoolHealth::Critical, // Multiple failures
}
}
StoragePoolType::RaidArray { level, .. } => {
let failed_drives = drives.iter().filter(|d| d.health_status != "PASSED").count();
// Basic RAID health logic (can be enhanced per RAID level)
match failed_drives {
0 => PoolHealth::Healthy,
1 if level.contains('1') || level.contains('5') || level.contains('6') => PoolHealth::Degraded,
_ => PoolHealth::Critical,
}
}
StoragePoolType::ZfsPool { .. } => {
// ZFS health would require zpool status parsing (future)
if drives.iter().all(|d| d.health_status == "PASSED") {
PoolHealth::Healthy
} else {
PoolHealth::Degraded
}
}
}
}
/// Get drive information for a list of device names
fn get_drive_info_for_devices(&self, device_names: &[String]) -> Result<Vec<DriveInfo>> {
let mut drives = Vec::new();
for device_name in device_names {
let device_path = format!("/dev/{}", device_name);
// Get SMART data for this drive
let (health_status, temperature, wear_level) = self.get_smart_data(&device_path);
drives.push(DriveInfo {
device: device_name.clone(),
health_status: health_status.clone(),
temperature,
wear_level,
});
debug!(
"Drive info for {}: health={}, temp={:?}°C, wear={:?}%",
device_name, health_status, temperature, wear_level
);
}
Ok(drives)
}
/// Get SMART data for a drive (health, temperature, wear level)
fn get_smart_data(&self, device_path: &str) -> (String, Option<f32>, Option<f32>) {
// Try to get SMART data using smartctl
let output = Command::new("sudo")
.arg("smartctl")
.arg("-a")
.arg(device_path)
.output();
match output {
Ok(result) if result.status.success() => {
let stdout = String::from_utf8_lossy(&result.stdout);
// Parse health status
let health = if stdout.contains("PASSED") {
"PASSED".to_string()
} else if stdout.contains("FAILED") {
"FAILED".to_string()
} else {
"UNKNOWN".to_string()
};
// Parse temperature (look for various temperature indicators)
let temperature = self.parse_temperature_from_smart(&stdout);
// Parse wear level (for SSDs)
let wear_level = self.parse_wear_level_from_smart(&stdout);
(health, temperature, wear_level)
}
_ => {
debug!("Failed to get SMART data for {}", device_path);
("UNKNOWN".to_string(), None, None)
}
}
}
/// Parse temperature from SMART output
fn parse_temperature_from_smart(&self, smart_output: &str) -> Option<f32> {
for line in smart_output.lines() {
// Look for temperature in various formats
if line.contains("Temperature_Celsius") || line.contains("Temperature") {
let parts: Vec<&str> = line.split_whitespace().collect();
if parts.len() >= 10 {
if let Ok(temp) = parts[9].parse::<f32>() {
return Some(temp);
}
}
}
// NVMe drives might show temperature differently
if line.contains("temperature:") {
if let Some(temp_part) = line.split("temperature:").nth(1) {
if let Some(temp_str) = temp_part.split_whitespace().next() {
if let Ok(temp) = temp_str.parse::<f32>() {
return Some(temp);
}
}
}
}
}
None
}
/// Parse wear level from SMART output (SSD wear leveling)
/// Supports both NVMe and SATA SSD wear indicators
fn parse_wear_level_from_smart(&self, smart_output: &str) -> Option<f32> {
for line in smart_output.lines() {
let line = line.trim();
// NVMe drives - direct percentage used
if line.contains("Percentage Used:") {
if let Some(wear_part) = line.split("Percentage Used:").nth(1) {
if let Some(wear_str) = wear_part.split('%').next() {
if let Ok(wear) = wear_str.trim().parse::<f32>() {
return Some(wear);
}
}
}
}
// SATA SSD attributes - parse SMART table format
// Format: ID ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
let parts: Vec<&str> = line.split_whitespace().collect();
if parts.len() >= 10 {
// SSD Life Left / Percent Lifetime Remaining (higher = less wear)
if line.contains("SSD_Life_Left") || line.contains("Percent_Lifetime_Remain") {
if let Ok(remaining) = parts[3].parse::<f32>() { // VALUE column
return Some(100.0 - remaining); // Convert remaining to used
}
}
// Media Wearout Indicator (lower = more wear, normalize to 0-100)
if line.contains("Media_Wearout_Indicator") {
if let Ok(remaining) = parts[3].parse::<f32>() { // VALUE column
return Some(100.0 - remaining); // Convert remaining to used
}
}
// Wear Leveling Count (higher = less wear, but varies by manufacturer)
if line.contains("Wear_Leveling_Count") {
if let Ok(wear_count) = parts[3].parse::<f32>() { // VALUE column
// Most SSDs: 100 = new, decreases with wear
if wear_count <= 100.0 {
return Some(100.0 - wear_count);
}
}
}
// Total LBAs Written - calculate against typical endurance if available
// This is more complex and manufacturer-specific, so we skip for now
}
}
None
}
/// Convert bytes to human-readable format
fn bytes_to_human_readable(&self, bytes: u64) -> String {
const UNITS: &[&str] = &["B", "K", "M", "G", "T"];
let mut size = bytes as f64;
let mut unit_index = 0;
while size >= 1024.0 && unit_index < UNITS.len() - 1 {
size /= 1024.0;
unit_index += 1;
}
if unit_index == 0 {
format!("{:.0}{}", size, UNITS[unit_index])
} else {
format!("{:.1}{}", size, UNITS[unit_index])
}
}
/// Convert bytes to gigabytes
fn bytes_to_gb(&self, bytes: u64) -> f32 {
bytes as f32 / (1024.0 * 1024.0 * 1024.0)
}
/// Detect device backing a mount point using lsblk (static version for startup)
fn detect_device_for_mount_point_static(mount_point: &str) -> Result<Vec<String>> {
let output = Command::new("lsblk")
.args(&["-n", "-o", "NAME,MOUNTPOINT"])
.output()?;
if !output.status.success() {
return Ok(Vec::new());
}
let output_str = String::from_utf8_lossy(&output.stdout);
for line in output_str.lines() {
let parts: Vec<&str> = line.split_whitespace().collect();
if parts.len() >= 2 && parts[1] == mount_point {
// Remove tree symbols and extract device name (e.g., "├─nvme0n1p2" -> "nvme0n1p2")
let device_name = parts[0]
.trim_start_matches('├')
.trim_start_matches('└')
.trim_start_matches('─')
.trim();
// Extract base device name (e.g., "nvme0n1p2" -> "nvme0n1")
if let Some(base_device) = Self::extract_base_device(device_name) {
return Ok(vec![base_device]);
}
}
}
Ok(Vec::new())
}
/// Extract base device name from partition (e.g., "nvme0n1p2" -> "nvme0n1", "sda1" -> "sda")
fn extract_base_device(device_name: &str) -> Option<String> {
// Handle NVMe devices (nvme0n1p1 -> nvme0n1)
if device_name.starts_with("nvme") {
if let Some(p_pos) = device_name.find('p') {
return Some(device_name[..p_pos].to_string());
}
}
// Handle traditional devices (sda1 -> sda)
if device_name.len() > 1 {
let chars: Vec<char> = device_name.chars().collect();
let mut end_idx = chars.len();
// Find where the device name ends and partition number begins
for (i, &c) in chars.iter().enumerate().rev() {
if !c.is_ascii_digit() {
end_idx = i + 1;
break;
}
}
if end_idx > 0 && end_idx < chars.len() {
return Some(chars[..end_idx].iter().collect());
}
}
// If no partition detected, return as-is
Some(device_name.to_string())
}
/// Get filesystem info using df command
fn get_filesystem_info(&self, path: &str) -> Result<(u64, u64)> {
let output = Command::new("df")
.arg("--block-size=1")
.arg(path)
.output()?;
if !output.status.success() {
return Err(anyhow::anyhow!("df command failed for {}", path));
}
let output_str = String::from_utf8(output.stdout)?;
let lines: Vec<&str> = output_str.lines().collect();
if lines.len() < 2 {
return Err(anyhow::anyhow!("Unexpected df output format"));
}
let fields: Vec<&str> = lines[1].split_whitespace().collect();
if fields.len() < 4 {
return Err(anyhow::anyhow!("Unexpected df fields count"));
}
let total_bytes = fields[1].parse::<u64>()?;
let used_bytes = fields[2].parse::<u64>()?;
Ok((total_bytes, used_bytes))
}
/// Parse size string (e.g., "120G", "45M") to GB value
fn parse_size_to_gb(&self, size_str: &str) -> f32 {
let size_str = size_str.trim();
if size_str.is_empty() || size_str == "-" {
return 0.0;
}
// Extract numeric part and unit
let (num_str, unit) = if let Some(last_char) = size_str.chars().last() {
if last_char.is_alphabetic() {
let num_part = &size_str[..size_str.len() - 1];
let unit_part = &size_str[size_str.len() - 1..];
(num_part, unit_part)
} else {
(size_str, "")
}
} else {
(size_str, "")
};
let number: f32 = num_str.parse().unwrap_or(0.0);
match unit.to_uppercase().as_str() {
"T" | "TB" => number * 1024.0,
"G" | "GB" => number,
"M" | "MB" => number / 1024.0,
"K" | "KB" => number / (1024.0 * 1024.0),
"B" | "" => number / (1024.0 * 1024.0 * 1024.0),
_ => number, // Assume GB if unknown unit
}
}
}
#[async_trait]
impl Collector for DiskCollector {
async fn collect(&self, status_tracker: &mut StatusTracker) -> Result<Vec<Metric>, CollectorError> {
let start_time = Instant::now();
debug!("Collecting storage pool and individual drive metrics");
let mut metrics = Vec::new();
// Get configured storage pools with individual drive data
let storage_pools = match self.get_configured_storage_pools() {
Ok(pools) => {
debug!("Found {} storage pools", pools.len());
pools
}
Err(e) => {
debug!("Failed to get storage pools: {}", e);
Vec::new()
}
};
// Generate metrics for each storage pool and its underlying drives
for storage_pool in &storage_pools {
let timestamp = chrono::Utc::now().timestamp() as u64;
// Storage pool overall metrics
let pool_name = &storage_pool.name;
// Parse size strings to get actual values for calculations
let size_gb = self.parse_size_to_gb(&storage_pool.size);
let used_gb = self.parse_size_to_gb(&storage_pool.used);
let avail_gb = self.parse_size_to_gb(&storage_pool.available);
// Calculate status based on configured thresholds and pool health
let usage_status = if storage_pool.usage_percent >= self.config.usage_critical_percent {
Status::Critical
} else if storage_pool.usage_percent >= self.config.usage_warning_percent {
Status::Warning
} else {
Status::Ok
};
let pool_status = match storage_pool.pool_health {
PoolHealth::Critical => Status::Critical,
PoolHealth::Degraded => Status::Warning,
PoolHealth::Rebuilding => Status::Warning,
PoolHealth::Healthy => usage_status,
PoolHealth::Unknown => Status::Unknown,
};
// Storage pool info metrics
metrics.push(Metric {
name: format!("disk_{}_mount_point", pool_name),
value: MetricValue::String(storage_pool.mount_point.clone()),
unit: None,
description: Some(format!("Mount: {}", storage_pool.mount_point)),
status: Status::Ok,
timestamp,
});
metrics.push(Metric {
name: format!("disk_{}_filesystem", pool_name),
value: MetricValue::String(storage_pool.filesystem.clone()),
unit: None,
description: Some(format!("FS: {}", storage_pool.filesystem)),
status: Status::Ok,
timestamp,
});
// Enhanced pool type information
let pool_type_str = match &storage_pool.pool_type {
StoragePoolType::Single => "single".to_string(),
StoragePoolType::PhysicalDrive { filesystems } => {
format!("drive ({})", filesystems.len())
}
StoragePoolType::MergerfsPool { data_disks, parity_disks } => {
format!("mergerfs ({}+{})", data_disks.len(), parity_disks.len())
}
StoragePoolType::RaidArray { level, member_disks, spare_disks } => {
format!("{} ({}+{})", level, member_disks.len(), spare_disks.len())
}
StoragePoolType::ZfsPool { pool_name, .. } => {
format!("zfs ({})", pool_name)
}
};
metrics.push(Metric {
name: format!("disk_{}_pool_type", pool_name),
value: MetricValue::String(pool_type_str.clone()),
unit: None,
description: Some(format!("Type: {}", pool_type_str)),
status: Status::Ok,
timestamp,
});
// Pool health status
let health_str = match storage_pool.pool_health {
PoolHealth::Healthy => "healthy",
PoolHealth::Degraded => "degraded",
PoolHealth::Critical => "critical",
PoolHealth::Rebuilding => "rebuilding",
PoolHealth::Unknown => "unknown",
};
metrics.push(Metric {
name: format!("disk_{}_pool_health", pool_name),
value: MetricValue::String(health_str.to_string()),
unit: None,
description: Some(format!("Health: {}", health_str)),
status: pool_status,
timestamp,
});
// Storage pool size metrics
metrics.push(Metric {
name: format!("disk_{}_total_gb", pool_name),
value: MetricValue::Float(size_gb),
unit: Some("GB".to_string()),
description: Some(format!("Total: {}", storage_pool.size)),
status: Status::Ok,
timestamp,
});
metrics.push(Metric {
name: format!("disk_{}_used_gb", pool_name),
value: MetricValue::Float(used_gb),
unit: Some("GB".to_string()),
description: Some(format!("Used: {}", storage_pool.used)),
status: pool_status,
timestamp,
});
metrics.push(Metric {
name: format!("disk_{}_available_gb", pool_name),
value: MetricValue::Float(avail_gb),
unit: Some("GB".to_string()),
description: Some(format!("Available: {}", storage_pool.available)),
status: Status::Ok,
timestamp,
});
metrics.push(Metric {
name: format!("disk_{}_usage_percent", pool_name),
value: MetricValue::Float(storage_pool.usage_percent),
unit: Some("%".to_string()),
description: Some(format!("Usage: {:.1}%", storage_pool.usage_percent)),
status: pool_status,
timestamp,
});
// Individual drive metrics for this storage pool
for drive in &storage_pool.underlying_drives {
// Drive health status
metrics.push(Metric {
name: format!("disk_{}_{}_health", pool_name, drive.device),
value: MetricValue::String(drive.health_status.clone()),
unit: None,
description: Some(format!("{}: {}", drive.device, drive.health_status)),
status: if drive.health_status == "PASSED" { Status::Ok }
else if drive.health_status == "FAILED" { Status::Critical }
else { Status::Unknown },
timestamp,
});
// Drive temperature
if let Some(temp) = drive.temperature {
let temp_status = self.calculate_temperature_status(
&format!("disk_{}_{}_temperature", pool_name, drive.device),
temp,
status_tracker
);
metrics.push(Metric {
name: format!("disk_{}_{}_temperature", pool_name, drive.device),
value: MetricValue::Float(temp),
unit: Some("°C".to_string()),
description: Some(format!("{}: {:.0}°C", drive.device, temp)),
status: temp_status,
timestamp,
});
}
// Drive wear level (for SSDs)
if let Some(wear) = drive.wear_level {
let wear_status = if wear >= self.config.wear_critical_percent { Status::Critical }
else if wear >= self.config.wear_warning_percent { Status::Warning }
else { Status::Ok };
metrics.push(Metric {
name: format!("disk_{}_{}_wear_percent", pool_name, drive.device),
value: MetricValue::Float(wear),
unit: Some("%".to_string()),
description: Some(format!("{}: {:.0}% wear", drive.device, wear)),
status: wear_status,
timestamp,
});
}
}
// Individual filesystem metrics for PhysicalDrive pools
if let StoragePoolType::PhysicalDrive { filesystems } = &storage_pool.pool_type {
for filesystem_mount in filesystems {
if let Ok((total_bytes, used_bytes)) = self.get_filesystem_info(filesystem_mount) {
let available_bytes = total_bytes - used_bytes;
let usage_percent = if total_bytes > 0 {
(used_bytes as f64 / total_bytes as f64) * 100.0
} else { 0.0 };
let filesystem_name = if filesystem_mount == "/" {
"root".to_string()
} else {
filesystem_mount.trim_start_matches('/').replace('/', "_")
};
// Calculate filesystem status based on usage
let fs_status = if usage_percent >= self.config.usage_critical_percent as f64 {
Status::Critical
} else if usage_percent >= self.config.usage_warning_percent as f64 {
Status::Warning
} else {
Status::Ok
};
// Filesystem usage metrics
metrics.push(Metric {
name: format!("disk_{}_fs_{}_usage_percent", pool_name, filesystem_name),
value: MetricValue::Float(usage_percent as f32),
unit: Some("%".to_string()),
description: Some(format!("{}: {:.0}%", filesystem_mount, usage_percent)),
status: fs_status.clone(),
timestamp,
});
metrics.push(Metric {
name: format!("disk_{}_fs_{}_used_gb", pool_name, filesystem_name),
value: MetricValue::Float(self.bytes_to_gb(used_bytes)),
unit: Some("GB".to_string()),
description: Some(format!("{}: {}GB used", filesystem_mount, self.bytes_to_human_readable(used_bytes))),
status: Status::Ok,
timestamp,
});
metrics.push(Metric {
name: format!("disk_{}_fs_{}_total_gb", pool_name, filesystem_name),
value: MetricValue::Float(self.bytes_to_gb(total_bytes)),
unit: Some("GB".to_string()),
description: Some(format!("{}: {}GB total", filesystem_mount, self.bytes_to_human_readable(total_bytes))),
status: Status::Ok,
timestamp,
});
metrics.push(Metric {
name: format!("disk_{}_fs_{}_available_gb", pool_name, filesystem_name),
value: MetricValue::Float(self.bytes_to_gb(available_bytes)),
unit: Some("GB".to_string()),
description: Some(format!("{}: {}GB available", filesystem_mount, self.bytes_to_human_readable(available_bytes))),
status: Status::Ok,
timestamp,
});
metrics.push(Metric {
name: format!("disk_{}_fs_{}_mount_point", pool_name, filesystem_name),
value: MetricValue::String(filesystem_mount.clone()),
unit: None,
description: Some(format!("Mount: {}", filesystem_mount)),
status: Status::Ok,
timestamp,
});
}
}
}
}
// Add storage pool count metric
metrics.push(Metric {
name: "disk_count".to_string(),
value: MetricValue::Integer(storage_pools.len() as i64),
unit: None,
description: Some(format!("Total storage pools: {}", storage_pools.len())),
status: Status::Ok,
timestamp: chrono::Utc::now().timestamp() as u64,
});
let collection_time = start_time.elapsed();
debug!(
"Multi-disk collection completed in {:?} with {} metrics",
collection_time,
metrics.len()
);
Ok(metrics)
}
}