Add pre-mount remote path probe and per-share health status

Before mounting, probe each share's remote path with `rclone lsf`
(10s timeout, parallel execution). Failed shares are skipped — they
never get mounted or exposed to SMB/NFS/WebDAV — preventing the
silent hang that occurred when rclone mounted a nonexistent directory.

- ShareHealth enum: Pending → Probing → Healthy / Failed(reason)
- Supervisor: probe phase between preflight and mount, protocol
  configs generated after probe with only healthy shares
- Web UI: health-aware badges (OK/FAILED/PROBING/PENDING) with
  error messages on dashboard, status partial, and share detail
- JSON API: health + health_message fields on /api/status
- CLI: `warpgate status` queries daemon API first for tri-state
  display (OK/FAILED/DOWN), falls back to direct mount checks

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/cli/status.rs

@@ -1,18 +1,130 @@
 //! `warpgate status` — show service status, cache stats, write-back queue, bandwidth.
+//!
+//! Prefers querying the daemon's web API for complete health information.
+//! Falls back to direct mount/RC checks when the daemon API is unreachable.
 
 use anyhow::Result;
+use serde::Deserialize;
 
 use crate::config::Config;
+use crate::daemon::DEFAULT_WEB_PORT;
 use crate::rclone::{mount, rc};
 
+/// JSON response from GET /api/status.
+#[derive(Deserialize)]
+struct ApiStatus {
+    shares: Vec<ApiShare>,
+}
+
+#[derive(Deserialize)]
+struct ApiShare {
+    name: String,
+    mounted: bool,
+    health: String,
+    health_message: Option<String>,
+    cache_bytes: u64,
+    dirty_count: u64,
+    errored_files: u64,
+    speed: f64,
+    transfers: u64,
+    errors: u64,
+}
+
 pub fn run(config: &Config) -> Result<()> {
-    // Check mount status for each share
+    // Try daemon API first for full health information
+    if let Some(api) = try_daemon_api() {
+        return print_api_status(&api);
+    }
+
+    // Fallback: direct mount/RC checks (daemon not running)
+    print_direct_status(config)
+}
+
+/// Try to reach the daemon's web API.
+fn try_daemon_api() -> Option<ApiStatus> {
+    let url = format!("http://127.0.0.1:{DEFAULT_WEB_PORT}/api/status");
+    let resp = ureq::get(&url).call().ok()?;
+    resp.into_body().read_json().ok()
+}
+
+/// Print status using daemon API response (includes health info).
+fn print_api_status(api: &ApiStatus) -> Result<()> {
+    let mut any_active = false;
+
+    for share in &api.shares {
+        match share.health.as_str() {
+            "OK" => {
+                if share.mounted {
+                    println!("Mount:  OK      {}", share.name);
+                    any_active = true;
+                } else {
+                    println!("Mount:  DOWN    {} — mount lost", share.name);
+                    any_active = true;
+                }
+            }
+            "FAILED" => {
+                let msg = share
+                    .health_message
+                    .as_deref()
+                    .unwrap_or("probe failed");
+                println!("Mount:  FAILED  {} — {}", share.name, msg);
+            }
+            "PROBING" => {
+                println!("Mount:  PROBING {}", share.name);
+            }
+            _ => {
+                println!("Mount:  PENDING {}", share.name);
+            }
+        }
+    }
+
+    if !any_active {
+        println!("\nNo healthy mounts are active.");
+        return Ok(());
+    }
+
+    // Aggregate stats from API response
+    let mut total_speed = 0.0f64;
+    let mut total_cache = 0u64;
+    let mut total_dirty = 0u64;
+    let mut total_transfers = 0u64;
+    let mut total_errors = 0u64;
+    let mut total_errored = 0u64;
+
+    for share in &api.shares {
+        if share.health == "OK" {
+            total_speed += share.speed;
+            total_cache += share.cache_bytes;
+            total_dirty += share.dirty_count;
+            total_transfers += share.transfers;
+            total_errors += share.errors;
+            total_errored += share.errored_files;
+        }
+    }
+
+    println!("Speed:  {}/s", format_bytes(total_speed as u64));
+    println!("Active: {} transfers", total_transfers);
+    println!("Errors: {}", total_errors);
+    println!("Cache:  {}", format_bytes(total_cache));
+    println!("Dirty:  {}", total_dirty);
+    if total_errored > 0 {
+        println!("Errored: {} files", total_errored);
+    }
+
+    Ok(())
+}
+
+/// Fallback: check mounts and RC API directly (no daemon API).
+fn print_direct_status(config: &Config) -> Result<()> {
     let mut any_mounted = false;
     for share in &config.shares {
         let mounted = match mount::is_mounted(&share.mount_point) {
             Ok(m) => m,
             Err(e) => {
-                eprintln!("Warning: could not check mount for '{}': {}", share.name, e);
+                eprintln!(
+                    "Warning: could not check mount for '{}': {}",
+                    share.name, e
+                );
                 false
             }
         };
@@ -20,14 +132,14 @@ pub fn run(config: &Config) -> Result<()> {
         let ro_tag = if share.read_only { " (ro)" } else { "" };
         if mounted {
             println!(
-                "Mount:    UP  {} → {}{}",
-                share.mount_point.display(),
+                "Mount:  OK      {} → {}{}",
                 share.name,
+                share.mount_point.display(),
                 ro_tag
             );
             any_mounted = true;
         } else {
-            println!("Mount:    DOWN  {}{}", share.name, ro_tag);
+            println!("Mount:  DOWN    {}{}", share.name, ro_tag);
         }
     }
 
@@ -68,17 +180,17 @@ pub fn run(config: &Config) -> Result<()> {
     }
 
     if rc_reachable {
-        println!("Speed:    {}/s", format_bytes(total_speed as u64));
-        println!("Moved:    {}", format_bytes(total_bytes));
-        println!("Active:   {} transfers", total_transfers);
-        println!("Errors:   {}", total_errors);
-        println!("Cache:    {}", format_bytes(total_cache_used));
+        println!("Speed:  {}/s", format_bytes(total_speed as u64));
+        println!("Moved:  {}", format_bytes(total_bytes));
+        println!("Active: {} transfers", total_transfers);
+        println!("Errors: {}", total_errors);
+        println!("Cache:  {}", format_bytes(total_cache_used));
         println!(
-            "Dirty:    {} uploading, {} queued",
+            "Dirty:  {} uploading, {} queued",
             total_uploading, total_queued
         );
         if total_errored > 0 {
-            println!("Errored:  {} files", total_errored);
+            println!("Errored: {} files", total_errored);
         }
     } else {
         eprintln!("Could not reach any rclone RC API.");

src/daemon.rs

@@ -56,6 +56,7 @@ impl DaemonStatus {
                     speed: 0.0,
                     transfers: 0,
                     errors: 0,
+                    health: ShareHealth::Pending,
                 })
                 .collect(),
             smbd_running: false,
@@ -100,6 +101,8 @@ pub struct ShareStatus {
     pub transfers: u64,
     /// Cumulative error count.
     pub errors: u64,
+    /// Pre-mount probe result.
+    pub health: ShareHealth,
 }
 
 impl ShareStatus {
@@ -116,6 +119,29 @@ impl ShareStatus {
             format!("{}/s", format_bytes(self.speed as u64))
         }
     }
+
+    /// Human-readable health label: "PENDING", "PROBING", "OK", or "FAILED".
+    pub fn health_label(&self) -> &str {
+        match &self.health {
+            ShareHealth::Pending => "PENDING",
+            ShareHealth::Probing => "PROBING",
+            ShareHealth::Healthy => "OK",
+            ShareHealth::Failed(_) => "FAILED",
+        }
+    }
+
+    /// Error message when health is Failed, None otherwise.
+    pub fn health_message(&self) -> Option<&str> {
+        match &self.health {
+            ShareHealth::Failed(msg) => Some(msg),
+            _ => None,
+        }
+    }
+
+    /// Whether the share is healthy (probe succeeded).
+    pub fn is_healthy(&self) -> bool {
+        self.health == ShareHealth::Healthy
+    }
 }
 
 /// Format bytes as human-readable (e.g. "45.2 GiB").
@@ -139,6 +165,19 @@ fn format_bytes(bytes: u64) -> String {
     }
 }
 
+/// Per-share health state from pre-mount probing.
+#[derive(Clone, Debug, PartialEq)]
+pub enum ShareHealth {
+    /// Not yet probed (initial state).
+    Pending,
+    /// Probe in progress.
+    Probing,
+    /// Remote path verified, ready to mount.
+    Healthy,
+    /// Probe failed — share will not be mounted.
+    Failed(String),
+}
+
 /// Commands sent from the web server (or CLI) to the supervisor.
 pub enum SupervisorCmd {
     /// Apply a new configuration (triggers tiered reload).
@@ -195,6 +234,7 @@ mod tests {
             speed: 2_200_000.0,
             transfers: 2,
             errors: 0,
+            health: ShareHealth::Healthy,
         };
         assert!(share.cache_display().contains("GiB"));
         assert!(share.speed_display().contains("/s"));
@@ -212,7 +252,39 @@ mod tests {
             speed: 0.0,
             transfers: 0,
             errors: 0,
+            health: ShareHealth::Pending,
         };
         assert_eq!(share.speed_display(), "-");
     }
+
+    #[test]
+    fn test_share_health_labels() {
+        let mut share = ShareStatus {
+            name: "test".into(),
+            mounted: false,
+            rc_port: 0,
+            cache_bytes: 0,
+            dirty_count: 0,
+            errored_files: 0,
+            speed: 0.0,
+            transfers: 0,
+            errors: 0,
+            health: ShareHealth::Pending,
+        };
+        assert_eq!(share.health_label(), "PENDING");
+        assert!(share.health_message().is_none());
+        assert!(!share.is_healthy());
+
+        share.health = ShareHealth::Probing;
+        assert_eq!(share.health_label(), "PROBING");
+
+        share.health = ShareHealth::Healthy;
+        assert_eq!(share.health_label(), "OK");
+        assert!(share.is_healthy());
+
+        share.health = ShareHealth::Failed("remote path not found".into());
+        assert_eq!(share.health_label(), "FAILED");
+        assert_eq!(share.health_message(), Some("remote path not found"));
+        assert!(!share.is_healthy());
+    }
 }

src/rclone/mod.rs

@@ -1,3 +1,4 @@
 pub mod config;
 pub mod mount;
+pub mod probe;
 pub mod rc;

src/rclone/probe.rs

@@ -0,0 +1,156 @@
+//! Pre-mount remote path probing using `rclone lsf`.
+//!
+//! Before mounting, we verify that each share's remote path actually exists.
+//! This prevents rclone from mounting a FUSE filesystem that silently fails
+//! when clients try to access it.
+
+use std::process::Command;
+use std::time::Duration;
+
+use anyhow::{Context, Result};
+
+use crate::config::{Config, ShareConfig};
+use crate::rclone::config::RCLONE_CONF_PATH;
+
+/// Probe timeout per share.
+const PROBE_TIMEOUT: Duration = Duration::from_secs(10);
+
+/// Probe whether a remote path exists using `rclone lsf`.
+///
+/// Runs: `rclone lsf <connection>:<remote_path> --max-depth 1 --config <rclone.conf>`
+///
+/// Returns `Ok(())` if the directory exists, `Err` with a descriptive message if not.
+pub fn probe_remote_path(_config: &Config, share: &ShareConfig) -> Result<()> {
+    let remote = format!("{}:{}", share.connection, share.remote_path);
+
+    let mut child = Command::new("rclone")
+        .args([
+            "lsf",
+            &remote,
+            "--max-depth",
+            "1",
+            "--config",
+            RCLONE_CONF_PATH,
+        ])
+        .stdout(std::process::Stdio::null())
+        .stderr(std::process::Stdio::piped())
+        .spawn()
+        .with_context(|| format!("Failed to spawn rclone lsf for '{}'", share.name))?;
+
+    // Wait with timeout using a polling loop
+    let deadline = std::time::Instant::now() + PROBE_TIMEOUT;
+    loop {
+        match child.try_wait() {
+            Ok(Some(status)) => {
+                if status.success() {
+                    return Ok(());
+                }
+                // Non-zero exit: extract stderr for error message
+                let stderr = if let Some(mut err) = child.stderr.take() {
+                    let mut buf = String::new();
+                    std::io::Read::read_to_string(&mut err, &mut buf).unwrap_or(0);
+                    buf
+                } else {
+                    String::new()
+                };
+                let msg = stderr.trim();
+                if msg.is_empty() {
+                    anyhow::bail!(
+                        "remote path not found: {} (exit code {})",
+                        share.remote_path,
+                        status.code().unwrap_or(-1)
+                    );
+                } else {
+                    anyhow::bail!("{}", extract_rclone_error(msg));
+                }
+            }
+            Ok(None) => {
+                // Still running — check timeout
+                if std::time::Instant::now() > deadline {
+                    let _ = child.kill();
+                    let _ = child.wait();
+                    anyhow::bail!(
+                        "probe timed out after {}s for path: {}",
+                        PROBE_TIMEOUT.as_secs(),
+                        share.remote_path
+                    );
+                }
+                std::thread::sleep(Duration::from_millis(100));
+            }
+            Err(e) => {
+                anyhow::bail!("failed to check rclone lsf status: {e}");
+            }
+        }
+    }
+}
+
+/// Extract the most useful part of rclone's error output.
+///
+/// rclone stderr often contains timestamps and log levels; we strip those
+/// to get a cleaner message for the user.
+fn extract_rclone_error(stderr: &str) -> String {
+    // rclone errors look like:
+    //   2024/01/01 12:00:00 ERROR : : error listing: directory not found
+    // We want just the error message part after "ERROR : : ".
+    for line in stderr.lines().rev() {
+        if let Some(pos) = line.find("ERROR") {
+            let after_error = &line[pos + 5..]; // skip "ERROR"
+            // Skip " : : " or " : name : " separators
+            let trimmed = after_error.trim_start_matches(|c: char| c == ' ' || c == ':');
+            if !trimmed.is_empty() {
+                return trimmed.to_string();
+            }
+        }
+    }
+    // Fallback: return last non-empty line
+    stderr
+        .lines()
+        .rev()
+        .find(|l| !l.trim().is_empty())
+        .unwrap_or(stderr)
+        .trim()
+        .to_string()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_extract_rclone_error_with_error_prefix() {
+        let stderr = "2024/01/01 12:00:00 ERROR : : error listing: directory not found";
+        assert_eq!(
+            extract_rclone_error(stderr),
+            "error listing: directory not found"
+        );
+    }
+
+    #[test]
+    fn test_extract_rclone_error_multiline() {
+        let stderr = "2024/01/01 12:00:00 NOTICE: some notice\n\
+                       2024/01/01 12:00:01 ERROR : : Failed to ls: directory not found";
+        assert_eq!(
+            extract_rclone_error(stderr),
+            "Failed to ls: directory not found"
+        );
+    }
+
+    #[test]
+    fn test_extract_rclone_error_no_error_prefix() {
+        let stderr = "some unexpected error output\n";
+        assert_eq!(
+            extract_rclone_error(stderr),
+            "some unexpected error output"
+        );
+    }
+
+    #[test]
+    fn test_extract_rclone_error_empty() {
+        assert_eq!(extract_rclone_error(""), "");
+    }
+
+    #[test]
+    fn test_probe_timeout_is_10s() {
+        assert_eq!(PROBE_TIMEOUT, Duration::from_secs(10));
+    }
+}

src/supervisor.rs

@@ -17,7 +17,7 @@ use anyhow::{Context, Result};
 
 use crate::config::Config;
 use crate::config_diff::{self, ChangeTier};
-use crate::daemon::{DaemonStatus, SupervisorCmd};
+use crate::daemon::{DaemonStatus, ShareHealth, SupervisorCmd};
 use crate::rclone::mount::{build_mount_args, is_mounted};
 use crate::rclone::rc;
 use crate::services::{nfs, samba, webdav};
@@ -132,22 +132,39 @@ pub fn run(config: &Config, config_path: PathBuf) -> Result<()> {
         }
     });
 
-    // Phase 1: Preflight — generate configs, create dirs
+    // Phase 1: Preflight — create dirs, write rclone.conf
     println!("Preflight checks...");
     preflight(config)?;
 
-    // Phase 2: Start rclone mounts (one per share) and wait for all to become ready
+    // Phase 1.5: Probe remote paths in parallel
+    println!("Probing remote paths...");
+    let healthy_names = probe_all_shares(config, &shared_status, &shutdown)?;
+
+    if healthy_names.is_empty() {
+        anyhow::bail!("All shares failed probe — no healthy mounts to start");
+    }
+
+    // Build a config containing only healthy shares for protocol configs
+    let mut healthy_config = config.clone();
+    healthy_config
+        .shares
+        .retain(|s| healthy_names.contains(&s.name));
+
+    // Phase 1.75: Generate protocol configs with only healthy shares
+    write_protocol_configs(&healthy_config)?;
+
+    // Phase 2: Start rclone mounts only for healthy shares
     println!("Starting rclone mounts...");
-    let mut mount_children = start_and_wait_mounts(config, &shutdown)?;
-    for share in &config.shares {
+    let mut mount_children = start_and_wait_mounts(&healthy_config, &shutdown)?;
+    for share in &healthy_config.shares {
         println!("  Mount ready at {}", share.mount_point.display());
     }
 
-    // Update status: mounts are ready
+    // Update status: mounts are ready (match by name, not index)
     {
         let mut status = shared_status.write().unwrap();
-        for (i, mc) in mount_children.iter().enumerate() {
-            if let Some(ss) = status.shares.get_mut(i) {
+        for mc in &mount_children {
+            if let Some(ss) = status.shares.iter_mut().find(|s| s.name == mc.name) {
                 ss.mounted = true;
                 ss.rc_port = mc.rc_port;
             }
@@ -164,14 +181,14 @@ pub fn run(config: &Config, config_path: PathBuf) -> Result<()> {
         return Ok(());
     }
     println!("Starting protocol services...");
-    let mut protocols = start_protocols(config)?;
+    let mut protocols = start_protocols(&healthy_config)?;
 
     // Update status: protocols running
     {
         let mut status = shared_status.write().unwrap();
         status.smbd_running = protocols.smbd.is_some();
         status.webdav_running = protocols.webdav.is_some();
-        status.nfs_exported = config.protocols.enable_nfs;
+        status.nfs_exported = healthy_config.protocols.enable_nfs;
     }
 
     // Phase 3.5: Auto-warmup in background thread (non-blocking)
@@ -217,7 +234,7 @@ pub fn run(config: &Config, config_path: PathBuf) -> Result<()> {
     result
 }
 
-/// Write configs and create directories.
+/// Write rclone config and create directories (protocol configs generated after probe).
 fn preflight(config: &Config) -> Result<()> {
     // Ensure mount points exist for each share
     for share in &config.shares {
@@ -240,7 +257,13 @@ fn preflight(config: &Config) -> Result<()> {
     // Generate rclone config
     crate::rclone::config::write_config(config)?;
 
-    // Generate protocol configs
+    Ok(())
+}
+
+/// Generate protocol configs (SMB/NFS) for the given config.
+///
+/// Called after probing so only healthy shares are included.
+fn write_protocol_configs(config: &Config) -> Result<()> {
     if config.protocols.enable_smb {
         samba::write_config(config)?;
         if config.smb_auth.enabled {
@@ -250,10 +273,75 @@ fn preflight(config: &Config) -> Result<()> {
     if config.protocols.enable_nfs {
         nfs::write_config(config)?;
     }
-
     Ok(())
 }
 
+/// Probe all shares in parallel and return the set of healthy share names.
+///
+/// Updates `shared_status` with probe results as they complete.
+fn probe_all_shares(
+    config: &Config,
+    shared_status: &Arc<RwLock<DaemonStatus>>,
+    shutdown: &AtomicBool,
+) -> Result<Vec<String>> {
+    use std::collections::HashSet;
+
+    let shares: Vec<_> = config.shares.clone();
+    let config_clone = config.clone();
+
+    // Mark all shares as Probing
+    {
+        let mut status = shared_status.write().unwrap();
+        for ss in &mut status.shares {
+            ss.health = ShareHealth::Probing;
+        }
+    }
+
+    // Spawn one thread per share
+    let handles: Vec<_> = shares
+        .into_iter()
+        .map(|share| {
+            let cfg = config_clone.clone();
+            let name = share.name.clone();
+            thread::spawn(move || {
+                let result = crate::rclone::probe::probe_remote_path(&cfg, &share);
+                (name, result)
+            })
+        })
+        .collect();
+
+    // Collect results
+    let mut healthy = HashSet::new();
+    for handle in handles {
+        if shutdown.load(Ordering::SeqCst) {
+            anyhow::bail!("Interrupted during probe");
+        }
+        match handle.join() {
+            Ok((name, Ok(()))) => {
+                println!("  Probe OK: {name}");
+                let mut status = shared_status.write().unwrap();
+                if let Some(ss) = status.shares.iter_mut().find(|s| s.name == name) {
+                    ss.health = ShareHealth::Healthy;
+                }
+                healthy.insert(name);
+            }
+            Ok((name, Err(e))) => {
+                let msg = format!("{e}");
+                eprintln!("  Probe FAILED: {name} — {msg}");
+                let mut status = shared_status.write().unwrap();
+                if let Some(ss) = status.shares.iter_mut().find(|s| s.name == name) {
+                    ss.health = ShareHealth::Failed(msg);
+                }
+            }
+            Err(_) => {
+                eprintln!("  Probe thread panicked");
+            }
+        }
+    }
+
+    Ok(healthy.into_iter().collect())
+}
+
 /// Spawn rclone mount processes for all shares and poll until each FUSE mount appears.
 fn start_and_wait_mounts(config: &Config, shutdown: &AtomicBool) -> Result<Vec<MountChild>> {
     let mut children = Vec::new();
@@ -645,6 +733,15 @@ fn handle_reload(
                 apply_bwlimit(mounts, &new_config.bandwidth.limit_up, &new_config.bandwidth.limit_down);
             }
 
+            // Regenerate rclone.conf if connections changed
+            if !diff.connections_added.is_empty()
+                || !diff.connections_removed.is_empty()
+                || !diff.connections_modified.is_empty()
+            {
+                println!("  Regenerating rclone.conf (connections changed)...");
+                crate::rclone::config::write_config(&new_config)?;
+            }
+
             // Handle removed shares: drain → unmount → kill
             for name in &diff.shares_removed {
                 println!("  Removing share '{name}'...");
@@ -717,13 +814,24 @@ fn handle_reload(
             // Re-preflight with new config
             preflight(&new_config)?;
 
-            // Re-start mounts
-            let shutdown = AtomicBool::new(false);
-            let mut new_mounts = start_and_wait_mounts(&new_config, &shutdown)?;
+            // Re-probe all shares
+            let shutdown_flag = AtomicBool::new(false);
+            let healthy_names =
+                probe_all_shares(&new_config, shared_status, &shutdown_flag)?;
+
+            // Build healthy-only config for mounts and protocols
+            let mut healthy_config = new_config.clone();
+            healthy_config
+                .shares
+                .retain(|s| healthy_names.contains(&s.name));
+            write_protocol_configs(&healthy_config)?;
+
+            // Re-start mounts (healthy only)
+            let mut new_mounts = start_and_wait_mounts(&healthy_config, &shutdown_flag)?;
             mounts.append(&mut new_mounts);
 
             // Re-start protocols
-            let new_protocols = start_protocols(&new_config)?;
+            let new_protocols = start_protocols(&healthy_config)?;
             // Replace old protocol children (Drop will handle any leftover)
             *protocols = new_protocols;
             *smbd_tracker = RestartTracker::new();
@@ -757,6 +865,9 @@ fn handle_reload(
                     speed: existing.map(|e| e.speed).unwrap_or(0.0),
                     transfers: existing.map(|e| e.transfers).unwrap_or(0),
                     errors: existing.map(|e| e.errors).unwrap_or(0),
+                    health: existing
+                        .map(|e| e.health.clone())
+                        .unwrap_or(ShareHealth::Pending),
                 }
             })
             .collect();

src/web/api.rs

@@ -45,6 +45,8 @@ struct ShareStatusResponse {
     speed_display: String,
     transfers: u64,
     errors: u64,
+    health: String,
+    health_message: Option<String>,
 }
 
 async fn get_status(State(state): State<SharedState>) -> Json<StatusResponse> {
@@ -66,6 +68,8 @@ async fn get_status(State(state): State<SharedState>) -> Json<StatusResponse> {
                 speed_display: s.speed_display(),
                 transfers: s.transfers,
                 errors: s.errors,
+                health: s.health_label().to_string(),
+                health_message: s.health_message().map(|m| m.to_string()),
             })
             .collect(),
         smbd_running: status.smbd_running,
@@ -97,6 +101,8 @@ async fn get_share_status(
         speed_display: share.speed_display(),
         transfers: share.transfers,
         errors: share.errors,
+        health: share.health_label().to_string(),
+        health_message: share.health_message().map(|m| m.to_string()),
     }))
 }
 

src/web/pages.rs

@@ -34,18 +34,22 @@ struct DashboardTemplate {
 
 struct ShareView {
     name: String,
+    connection: String,
     mount_point: String,
     mounted: bool,
     cache_display: String,
     dirty_count: u64,
     speed_display: String,
     read_only: bool,
+    health: String,
+    health_message: String,
 }
 
 #[derive(Template)]
 #[template(path = "web/share_detail.html")]
 struct ShareDetailTemplate {
     name: String,
+    connection: String,
     mount_point: String,
     remote_path: String,
     mounted: bool,
@@ -57,6 +61,8 @@ struct ShareDetailTemplate {
     speed_display: String,
     transfers: u64,
     errors: u64,
+    health: String,
+    health_message: String,
 }
 
 #[derive(Template)]
@@ -88,21 +94,22 @@ async fn dashboard(State(state): State<SharedState>) -> Response {
         .shares
         .iter()
         .map(|s| {
-            let read_only = config
-                .find_share(&s.name)
-                .map(|sc| sc.read_only)
-                .unwrap_or(false);
+            let share_config = config.find_share(&s.name);
             ShareView {
                 name: s.name.clone(),
-                mount_point: config
-                    .find_share(&s.name)
+                connection: share_config
+                    .map(|sc| sc.connection.clone())
+                    .unwrap_or_default(),
+                mount_point: share_config
                     .map(|sc| sc.mount_point.display().to_string())
                     .unwrap_or_default(),
                 mounted: s.mounted,
                 cache_display: s.cache_display(),
                 dirty_count: s.dirty_count,
                 speed_display: s.speed_display(),
-                read_only,
+                read_only: share_config.map(|sc| sc.read_only).unwrap_or(false),
+                health: s.health_label().to_string(),
+                health_message: s.health_message().unwrap_or("").to_string(),
             }
         })
         .collect();
@@ -138,6 +145,9 @@ async fn share_detail(
 
     let tmpl = ShareDetailTemplate {
         name: share_status.name.clone(),
+        connection: share_config
+            .map(|sc| sc.connection.clone())
+            .unwrap_or_default(),
         mount_point: share_config
             .map(|sc| sc.mount_point.display().to_string())
             .unwrap_or_default(),
@@ -153,6 +163,8 @@ async fn share_detail(
         speed_display: share_status.speed_display(),
         transfers: share_status.transfers,
         errors: share_status.errors,
+        health: share_status.health_label().to_string(),
+        health_message: share_status.health_message().unwrap_or("").to_string(),
     };
 
     match tmpl.render() {
@@ -278,21 +290,22 @@ async fn status_partial(State(state): State<SharedState>) -> Response {
         .shares
         .iter()
         .map(|s| {
-            let read_only = config
-                .find_share(&s.name)
-                .map(|sc| sc.read_only)
-                .unwrap_or(false);
+            let share_config = config.find_share(&s.name);
             ShareView {
                 name: s.name.clone(),
-                mount_point: config
-                    .find_share(&s.name)
+                connection: share_config
+                    .map(|sc| sc.connection.clone())
+                    .unwrap_or_default(),
+                mount_point: share_config
                     .map(|sc| sc.mount_point.display().to_string())
                     .unwrap_or_default(),
                 mounted: s.mounted,
                 cache_display: s.cache_display(),
                 dirty_count: s.dirty_count,
                 speed_display: s.speed_display(),
-                read_only,
+                read_only: share_config.map(|sc| sc.read_only).unwrap_or(false),
+                health: s.health_label().to_string(),
+                health_message: s.health_message().unwrap_or("").to_string(),
             }
         })
         .collect();

templates/web/dashboard.html

@@ -28,6 +28,8 @@
     .badge-ok { background: rgba(74,222,128,0.15); color: var(--green); }
     .badge-error { background: rgba(248,113,113,0.15); color: var(--red); }
     .badge-ro { background: rgba(251,191,36,0.15); color: var(--yellow); }
+    .badge-warn { background: rgba(251,191,36,0.15); color: var(--yellow); }
+    .error-msg { margin-top: 8px; padding: 8px 12px; background: rgba(248,113,113,0.08); border-radius: 4px; color: var(--red); font-size: 0.85em; }
     .stats { display: flex; gap: 24px; font-size: 0.9em; color: var(--text-muted); flex-wrap: wrap; }
     .stats span { white-space: nowrap; }
     .stats .label { color: var(--text-muted); }
@@ -55,10 +57,14 @@
       <div class="card-header">
         <h2><a href="/shares/{{ share.name }}">{{ share.name }}</a></h2>
         <div>
-          {% if share.mounted %}
+          {% if share.health == "OK" %}
             <span class="badge badge-ok">OK</span>
+          {% elif share.health == "FAILED" %}
+            <span class="badge badge-error" title="{{ share.health_message }}">FAILED</span>
+          {% elif share.health == "PROBING" %}
+            <span class="badge badge-warn">PROBING</span>
           {% else %}
-            <span class="badge badge-error">DOWN</span>
+            <span class="badge badge-warn">PENDING</span>
           {% endif %}
           {% if share.read_only %}
             <span class="badge badge-ro">RO</span>
@@ -71,6 +77,9 @@
         <span><span class="label">Dirty:</span> <span class="value">{{ share.dirty_count }}</span></span>
         <span><span class="label">Speed:</span> <span class="value">{{ share.speed_display }}</span></span>
       </div>
+      {% if share.health == "FAILED" %}
+      <div class="error-msg">{{ share.health_message }}</div>
+      {% endif %}
     </div>
     {% endfor %}
 

templates/web/share_detail.html

@@ -22,6 +22,8 @@
     .badge-ok { background: rgba(74,222,128,0.15); color: var(--green); }
     .badge-error { background: rgba(248,113,113,0.15); color: var(--red); }
     .badge-ro { background: rgba(251,191,36,0.15); color: var(--yellow); }
+    .badge-warn { background: rgba(251,191,36,0.15); color: var(--yellow); }
+    .error-text { color: var(--red); }
     .detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 24px; }
     .detail-card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
     .detail-card .label { font-size: 0.8em; color: var(--text-muted); margin-bottom: 4px; }
@@ -36,7 +38,7 @@
 
   <h1>
     {{ name }}
-    {% if mounted %}<span class="badge badge-ok">OK</span>{% else %}<span class="badge badge-error">DOWN</span>{% endif %}
+    {% if health == "OK" %}<span class="badge badge-ok">OK</span>{% elif health == "FAILED" %}<span class="badge badge-error">FAILED</span>{% elif health == "PROBING" %}<span class="badge badge-warn">PROBING</span>{% else %}<span class="badge badge-warn">PENDING</span>{% endif %}
     {% if read_only %}<span class="badge badge-ro">Read-Only</span>{% endif %}
   </h1>
 
@@ -60,6 +62,10 @@
   </div>
 
   <table class="info-table">
+    <tr><td>Health</td><td>{{ health }}</td></tr>
+    {% if health == "FAILED" %}
+    <tr><td>Probe Error</td><td class="error-text">{{ health_message }}</td></tr>
+    {% endif %}
     <tr><td>Mount Point</td><td>{{ mount_point }}</td></tr>
     <tr><td>Remote Path</td><td>{{ remote_path }}</td></tr>
     <tr><td>RC Port</td><td>{{ rc_port }}</td></tr>

templates/web/status_partial.html

@@ -3,10 +3,14 @@
   <div class="card-header">
     <h2><a href="/shares/{{ share.name }}">{{ share.name }}</a></h2>
     <div>
-      {% if share.mounted %}
+      {% if share.health == "OK" %}
         <span class="badge badge-ok">OK</span>
+      {% elif share.health == "FAILED" %}
+        <span class="badge badge-error" title="{{ share.health_message }}">FAILED</span>
+      {% elif share.health == "PROBING" %}
+        <span class="badge badge-warn">PROBING</span>
       {% else %}
-        <span class="badge badge-error">DOWN</span>
+        <span class="badge badge-warn">PENDING</span>
       {% endif %}
       {% if share.read_only %}
         <span class="badge badge-ro">RO</span>
@@ -19,6 +23,9 @@
     <span><span class="label">Dirty:</span> <span class="value">{{ share.dirty_count }}</span></span>
     <span><span class="label">Speed:</span> <span class="value">{{ share.speed_display }}</span></span>
   </div>
+  {% if share.health == "FAILED" %}
+  <div class="error-msg">{{ share.health_message }}</div>
+  {% endif %}
 </div>
 {% endfor %}