Only scan one filesystem by default (can configure 'cross_filesystems' if needed)

datman/src/bin/datman.rs

@@ -195,10 +195,10 @@ fn main() -> anyhow::Result<()> {
             unimplemented!();
         }
         DatmanCommand::InteractiveLabelling { source_name } => {
-            interactive_labelling_session(Path::new("."), source_name).unwrap();
+            interactive_labelling_session(Path::new("."), source_name)?;
         }
         DatmanCommand::InteractiveBrowsing { source_name } => {
-            datman::commands::ibrowse::session(Path::new("."), source_name).unwrap();
+            datman::commands::ibrowse::session(Path::new("."), source_name)?;
         }
         DatmanCommand::BackupOne {
             source_name,
@@ -317,7 +317,7 @@ fn main() -> anyhow::Result<()> {
             let descriptor = load_descriptor(Path::new(".")).unwrap();
             let destination = &descriptor.piles[&pile_name];
             let report = datman::commands::report::generate_report(destination, &descriptor)?;
-            
+
             datman::commands::report::print_report(&report)?;
             datman::commands::report::print_filesystem_space(&destination.path)?;
         }

datman/src/commands/backup.rs

@@ -147,10 +147,12 @@ pub fn backup_source_to_destination<PT: ProgressTracker>(
         SourceDescriptor::DirectorySource {
             hostname: _,
             directory,
+            cross_filesystems,
         } => {
             info!("Looking to backup {} to {}", source_name, dest_name);
             info!("Scanning.");
-            let tree = scan(directory)?.ok_or_else(|| anyhow!("Source does not exist."))?;
+            let tree = scan(directory, !*cross_filesystems)?
+                .ok_or_else(|| anyhow!("Source does not exist."))?;
 
             let absolute_source_path = desc_path.join(directory);
             let absolute_dest_path = desc_path.join(&dest.path);

datman/src/commands/ibrowse.rs

@@ -68,15 +68,19 @@ pub fn session(path: &Path, source_name: String) -> anyhow::Result<()> {
         .get(&source_name)
         .ok_or_else(|| anyhow!("Could not find source {:?}!", source_name))?;
 
-    let directory = match source_descriptor {
-        SourceDescriptor::DirectorySource { directory, .. } => directory,
+    let (directory, one_filesystem) = match source_descriptor {
+        SourceDescriptor::DirectorySource {
+            directory,
+            cross_filesystems,
+            ..
+        } => (directory, !*cross_filesystems),
         SourceDescriptor::VirtualSource { .. } => {
             bail!("Cannot browse virtual source.");
         }
     };
 
     println!("Scanning source; this might take a little while...");
-    let mut dir_scan: FileTree1<Option<State>> = scan(directory)?
+    let mut dir_scan: FileTree1<Option<State>> = scan(directory, one_filesystem)?
         .ok_or_else(|| anyhow!("Empty source."))?
         .replace_meta(&None);
 

datman/src/commands/ilabel.rs

@@ -186,12 +186,13 @@ pub fn interactive_labelling_session(path: &Path, source_name: String) -> anyhow
     if let SourceDescriptor::DirectorySource {
         hostname,
         directory,
+        cross_filesystems,
     } = source
     {
         let my_hostname = get_hostname();
         let mut dir_scan = if &my_hostname == hostname {
             info!("Scanning source; this might take a little while...");
-            scan(directory)?
+            scan(directory, !*cross_filesystems)?
                 .ok_or_else(|| anyhow!("Empty source."))?
                 .replace_meta(&None)
         } else {
@@ -206,10 +207,14 @@ pub fn interactive_labelling_session(path: &Path, source_name: String) -> anyhow
 
             // then request to scan
             info!("Requesting scan from remote source... (this may take some time)");
-            let scan =
-                backup_source_requester::scanning(&mut read, &mut write, directory.as_ref())?
-                    .ok_or_else(|| anyhow!("Remote scan failed (does the directory exist?)"))?
-                    .replace_meta(&None);
+            let scan = backup_source_requester::scanning(
+                &mut read,
+                &mut write,
+                directory.as_ref(),
+                !*cross_filesystems,
+            )?
+            .ok_or_else(|| anyhow!("Remote scan failed (does the directory exist?)"))?
+            .replace_meta(&None);
 
             backup_source_requester::quit(&mut read, &mut write)?;
 

datman/src/descriptor.rs

@@ -52,6 +52,8 @@ pub enum SourceDescriptor {
     DirectorySource {
         hostname: String,
         directory: PathBuf,
+        #[serde(default)]
+        cross_filesystems: bool,
     },
     VirtualSource {
         /// The name of the helper program that will be used to do this backup.

datman/src/remote/backup_source_requester.rs

@@ -47,10 +47,12 @@ pub fn scanning<R: Read, W: Write>(
     read: &mut R,
     write: &mut W,
     path: &Path,
+    one_filesystem: bool,
 ) -> anyhow::Result<Option<FileTree<(), (), (), ()>>> {
     info!("Scanning.");
     write_message(write, &"scan")?;
     write_message(write, &path)?;
+    write_message(write, &one_filesystem)?;
     write.flush()?;
     let scan_result: Option<FileTree<(), (), (), ()>> = read_message(read)?;
 
@@ -177,6 +179,7 @@ pub fn backup_remote_source_to_destination<PT: ProgressTracker + Send + 'static>
         SourceDescriptor::DirectorySource {
             hostname,
             directory,
+            cross_filesystems,
         } => {
             let remote_host_descriptor = descriptor
                 .remote_hosts
@@ -198,8 +201,13 @@ pub fn backup_remote_source_to_destination<PT: ProgressTracker + Send + 'static>
 
             // then request to scan
             info!("Requesting scan... (this may take some time)");
-            let scan_result = scanning(&mut read, &mut write, directory.as_ref())?
-                .ok_or_else(|| anyhow!("Remote scan failed (does the directory exist?)"))?;
+            let scan_result = scanning(
+                &mut read,
+                &mut write,
+                directory.as_ref(),
+                !*cross_filesystems,
+            )?
+            .ok_or_else(|| anyhow!("Remote scan failed (does the directory exist?)"))?;
 
             let mut root =
                 label_filter_and_convert(scan_result, descriptor, desc_path, source_name, dest)?

datman/src/remote/backup_source_responder.rs

@@ -42,7 +42,8 @@ pub fn introduction<R: Read, W: Write>(read: &mut R, write: &mut W) -> anyhow::R
 
 pub fn scanning<R: Read, W: Write>(read: &mut R, write: &mut W) -> anyhow::Result<()> {
     let path: PathBuf = read_message(read)?;
-    let scan_result = scan(&path)?;
+    let one_filesystem: bool = read_message(read)?;
+    let scan_result = scan(&path, one_filesystem)?;
     write_message(write, &scan_result)?;
     write.flush()?;
     Ok(())

datman/src/tree.rs

@@ -24,7 +24,7 @@ use std::path::Path;
 
 use anyhow::anyhow;
 use indicatif::{ProgressBar, ProgressDrawTarget, ProgressStyle};
-use log::warn;
+use log::{info, warn};
 use serde::{Deserialize, Serialize};
 
 pub use yama::definitions::FilesystemOwnership;
@@ -216,12 +216,14 @@ pub fn mtime_msec(metadata: &Metadata) -> u64 {
 }
 
 /// Scan the filesystem to produce a Tree, using a default progress bar.
-pub fn scan(path: &Path) -> anyhow::Result<Option<FileTree<(), (), (), ()>>> {
+pub fn scan(path: &Path, one_filesystem: bool) -> anyhow::Result<Option<FileTree<(), (), (), ()>>> {
     let pbar = ProgressBar::with_draw_target(0, ProgressDrawTarget::stdout_with_hz(2));
     pbar.set_style(ProgressStyle::default_spinner().template("{spinner} {pos:7} {msg}"));
     pbar.set_message("dir scan");
 
-    let result = scan_with_progress_bar(path, &pbar);
+    let one_filesystem = if one_filesystem { Some(None) } else { None };
+
+    let result = scan_with_progress_bar(path, &pbar, one_filesystem);
     pbar.finish_at_current_pos();
     result
 }
@@ -230,6 +232,7 @@ pub fn scan(path: &Path) -> anyhow::Result<Option<FileTree<(), (), (), ()>>> {
 pub fn scan_with_progress_bar(
     path: &Path,
     progress_bar: &ProgressBar,
+    mut one_filesystem: Option<Option<u64>>,
 ) -> anyhow::Result<Option<FileTree<(), (), (), ()>>> {
     let metadata_res = symlink_metadata(path);
     progress_bar.inc(1);
@@ -249,6 +252,14 @@ pub fn scan_with_progress_bar(
     let metadata = metadata_res?;
     let filetype = metadata.file_type();
 
+    if let Some(one_filesystem) = one_filesystem.as_mut() {
+        let this_fs = metadata.dev();
+        if *one_filesystem.get_or_insert(this_fs) != this_fs {
+            info!("Stopping at filesystem boundary: {:?}", path);
+            return Ok(None);
+        }
+    }
+
     /*let name = path
     .file_name()
     .ok_or(anyhow!("No filename, wat"))?
@@ -294,7 +305,7 @@ pub fn scan_with_progress_bar(
 
         for entry in dir_read? {
             let entry: DirEntry = entry?;
-            let scanned = scan_with_progress_bar(&entry.path(), progress_bar)?;
+            let scanned = scan_with_progress_bar(&entry.path(), progress_bar, one_filesystem)?;
             if let Some(scanned) = scanned {
                 children.insert(
                     entry