-use failure::*;
+use std::collections::{HashSet, HashMap};
+use std::io::{self, Write};
+use std::path::{Path, PathBuf};
+use std::sync::{Arc, Mutex};
+use std::convert::TryFrom;
-use chrono::prelude::*;
-
-use std::path::{PathBuf, Path};
-use std::collections::HashMap;
+use anyhow::{bail, format_err, Error};
use lazy_static::lazy_static;
-use std::sync::{Mutex, Arc};
+use serde_json::Value;
-use std::os::unix::io::AsRawFd;
+use proxmox::tools::fs::{replace_file, CreateOptions};
-use crate::tools;
+use super::backup_info::{BackupGroup, BackupDir};
+use super::chunk_store::ChunkStore;
+use super::dynamic_index::{DynamicIndexReader, DynamicIndexWriter};
+use super::fixed_index::{FixedIndexReader, FixedIndexWriter};
+use super::manifest::{MANIFEST_BLOB_NAME, CLIENT_LOG_BLOB_NAME, BackupManifest};
+use super::index::*;
+use super::{DataBlob, ArchiveType, archive_type};
use crate::config::datastore;
-use super::chunk_store::*;
-use super::image_index::*;
-use super::archive_index::*;
+use crate::task::TaskState;
+use crate::tools;
+use crate::tools::format::HumanByte;
+use crate::tools::fs::{lock_dir_noblock, DirLockGuard};
+use crate::api2::types::{GarbageCollectionStatus, Userid};
+use crate::server::UPID;
-use chrono::{Utc, TimeZone};
+lazy_static! {
+ static ref DATASTORE_MAP: Mutex<HashMap<String, Arc<DataStore>>> = Mutex::new(HashMap::new());
+}
+/// Datastore Management
+///
+/// A Datastore can store severals backups, and provides the
+/// management interface for backup.
pub struct DataStore {
chunk_store: Arc<ChunkStore>,
gc_mutex: Mutex<bool>,
-}
-
-#[derive(Debug)]
-pub struct BackupInfo {
- pub backup_type: String,
- pub backup_id: String,
- pub backup_time: DateTime<Utc>,
-}
-
-lazy_static!{
- static ref datastore_map: Mutex<HashMap<String, Arc<DataStore>>> = Mutex::new(HashMap::new());
+ last_gc_status: Mutex<GarbageCollectionStatus>,
}
impl DataStore {
pub fn lookup_datastore(name: &str) -> Result<Arc<DataStore>, Error> {
- let config = datastore::config()?;
- let (_, store_config) = config.sections.get(name)
- .ok_or(format_err!("no such datastore '{}'", name))?;
+ let (config, _digest) = datastore::config()?;
+ let config: datastore::DataStoreConfig = config.lookup("datastore", name)?;
- let path = store_config["path"].as_str().unwrap();
-
- let mut map = datastore_map.lock().unwrap();
+ let mut map = DATASTORE_MAP.lock().unwrap();
if let Some(datastore) = map.get(name) {
// Compare Config - if changed, create new Datastore object!
- if datastore.chunk_store.base == PathBuf::from(path) {
+ if datastore.chunk_store.base == PathBuf::from(&config.path) {
return Ok(datastore.clone());
}
}
- if let Ok(datastore) = DataStore::open(name) {
- let datastore = Arc::new(datastore);
- map.insert(name.to_string(), datastore.clone());
- return Ok(datastore);
- }
+ let datastore = DataStore::open(name)?;
+
+ let datastore = Arc::new(datastore);
+ map.insert(name.to_string(), datastore.clone());
- bail!("store not found");
+ Ok(datastore)
}
pub fn open(store_name: &str) -> Result<Self, Error> {
- let config = datastore::config()?;
+ let (config, _digest) = datastore::config()?;
let (_, store_config) = config.sections.get(store_name)
.ok_or(format_err!("no such datastore '{}'", store_name))?;
let path = store_config["path"].as_str().unwrap();
+ Self::open_with_path(store_name, Path::new(path))
+ }
+
+ pub fn open_with_path(store_name: &str, path: &Path) -> Result<Self, Error> {
let chunk_store = ChunkStore::open(store_name, path)?;
+ let gc_status = GarbageCollectionStatus::default();
+
Ok(Self {
chunk_store: Arc::new(chunk_store),
gc_mutex: Mutex::new(false),
+ last_gc_status: Mutex::new(gc_status),
})
}
- pub fn create_image_writer<P: AsRef<Path>>(&self, filename: P, size: usize, chunk_size: usize) -> Result<ImageIndexWriter, Error> {
+ pub fn get_chunk_iterator(
+ &self,
+ ) -> Result<
+ impl Iterator<Item = (Result<tools::fs::ReadDirEntry, Error>, usize, bool)>,
+ Error
+ > {
+ self.chunk_store.get_chunk_iterator()
+ }
+
+ pub fn create_fixed_writer<P: AsRef<Path>>(&self, filename: P, size: usize, chunk_size: usize) -> Result<FixedIndexWriter, Error> {
- let index = ImageIndexWriter::create(self.chunk_store.clone(), filename.as_ref(), size, chunk_size)?;
+ let index = FixedIndexWriter::create(self.chunk_store.clone(), filename.as_ref(), size, chunk_size)?;
Ok(index)
}
- pub fn open_image_reader<P: AsRef<Path>>(&self, filename: P) -> Result<ImageIndexReader, Error> {
+ pub fn open_fixed_reader<P: AsRef<Path>>(&self, filename: P) -> Result<FixedIndexReader, Error> {
- let index = ImageIndexReader::open(self.chunk_store.clone(), filename.as_ref())?;
+ let full_path = self.chunk_store.relative_path(filename.as_ref());
+
+ let index = FixedIndexReader::open(&full_path)?;
Ok(index)
}
- pub fn create_
archive_writer<P: AsRef<Path>>(
+ pub fn create_
dynamic_writer<P: AsRef<Path>>(
&self, filename: P,
- chunk_size: usize
- ) -> Result<ArchiveIndexWriter, Error> {
+ ) -> Result<DynamicIndexWriter, Error> {
- let index = ArchiveIndexWriter::create(
- self.chunk_store.clone(), filename.as_ref(), chunk_size)?;
+ let index = DynamicIndexWriter::create(
+ self.chunk_store.clone(), filename.as_ref())?;
Ok(index)
}
- pub fn open_archive_reader<P: AsRef<Path>>(&self, filename: P) -> Result<ArchiveIndexReader, Error> {
+ pub fn open_dynamic_reader<P: AsRef<Path>>(&self, filename: P) -> Result<DynamicIndexReader, Error> {
+
+ let full_path = self.chunk_store.relative_path(filename.as_ref());
- let index = ArchiveIndexReader::open(self.chunk_store.clone(), filename.as_ref())?;
+ let index = DynamicIndexReader::open(&full_path)?;
Ok(index)
}
+ pub fn open_index<P>(&self, filename: P) -> Result<Box<dyn IndexFile + Send>, Error>
+ where
+ P: AsRef<Path>,
+ {
+ let filename = filename.as_ref();
+ let out: Box<dyn IndexFile + Send> =
+ match archive_type(filename)? {
+ ArchiveType::DynamicIndex => Box::new(self.open_dynamic_reader(filename)?),
+ ArchiveType::FixedIndex => Box::new(self.open_fixed_reader(filename)?),
+ _ => bail!("cannot open index file of unknown type: {:?}", filename),
+ };
+ Ok(out)
+ }
+
+ pub fn name(&self) -> &str {
+ self.chunk_store.name()
+ }
+
pub fn base_path(&self) -> PathBuf {
self.chunk_store.base_path()
}
- pub fn get_backup_dir(
- &self,
- backup_type: &str,
- backup_id: &str,
- backup_time: DateTime<Utc>,
- ) -> PathBuf {
+ /// Cleanup a backup directory
+ ///
+ /// Removes all files not mentioned in the manifest.
+ pub fn cleanup_backup_dir(&self, backup_dir: &BackupDir, manifest: &BackupManifest
+ ) -> Result<(), Error> {
+
+ let mut full_path = self.base_path();
+ full_path.push(backup_dir.relative_path());
- let mut relative_path = PathBuf::new();
+ let mut wanted_files = HashSet::new();
+ wanted_files.insert(MANIFEST_BLOB_NAME.to_string());
+ wanted_files.insert(CLIENT_LOG_BLOB_NAME.to_string());
+ manifest.files().iter().for_each(|item| { wanted_files.insert(item.filename.clone()); });
- relative_path.push(backup_type);
+ for item in tools::fs::read_subdir(libc::AT_FDCWD, &full_path)? {
+ if let Ok(item) = item {
+ if let Some(file_type) = item.file_type() {
+ if file_type != nix::dir::Type::File { continue; }
+ }
+ let file_name = item.file_name().to_bytes();
+ if file_name == b"." || file_name == b".." { continue; };
- relative_path.push(backup_id);
+ if let Ok(name) = std::str::from_utf8(file_name) {
+ if wanted_files.contains(name) { continue; }
+ }
+ println!("remove unused file {:?}", item.file_name());
+ let dirfd = item.parent_fd();
+ let _res = unsafe { libc::unlinkat(dirfd, item.file_name().as_ptr(), 0) };
+ }
+ }
- let date_str = backup_time.format("%Y-%m-%dT%H:%M:%S").to_string();
+ Ok(())
+ }
- relative_path.push(&date_str);
+ /// Returns the absolute path for a backup_group
+ pub fn group_path(&self, backup_group: &BackupGroup) -> PathBuf {
+ let mut full_path = self.base_path();
+ full_path.push(backup_group.group_path());
+ full_path
+ }
- relative_path
+ /// Returns the absolute path for backup_dir
+ pub fn snapshot_path(&self, backup_dir: &BackupDir) -> PathBuf {
+ let mut full_path = self.base_path();
+ full_path.push(backup_dir.relative_path());
+ full_path
}
- pub fn create_backup_dir(
- &self,
- backup_type: &str,
- backup_id: &str,
- backup_time: i64,
- ) -> Result<PathBuf, Error> {
- let mut relative_path = PathBuf::new();
+ /// Remove a complete backup group including all snapshots
+ pub fn remove_backup_group(&self, backup_group: &BackupGroup) -> Result<(), Error> {
- relative_path.push(backup_type);
+ let full_path = self.group_path(backup_group);
- relative_path.push(backup_id);
+ let _guard = tools::fs::lock_dir_noblock(&full_path, "backup group", "possible running backup")?;
- let dt = Utc.timestamp(backup_time, 0);
- let date_str = dt.format("%Y-%m-%dT%H:%M:%S").to_string();
+ log::info!("removing backup group {:?}", full_path);
+ std::fs::remove_dir_all(&full_path)
+ .map_err(|err| {
+ format_err!(
+ "removing backup group {:?} failed - {}",
+ full_path,
+ err,
+ )
+ })?;
- println!("date: {}", date_str);
+ Ok(())
+ }
- relative_path.push(&date_str);
+ /// Remove a backup directory including all content
+ pub fn remove_backup_dir(&self, backup_dir: &BackupDir, force: bool) -> Result<(), Error> {
+ let full_path = self.snapshot_path(backup_dir);
- let mut full_path = self.base_path();
- full_path.push(&relative_path);
+ let _guard;
+ if !force {
+ _guard = lock_dir_noblock(&full_path, "snapshot", "possibly running or used as base")?;
+ }
- std::fs::create_dir_all(&full_path)?;
+ log::info!("removing backup snapshot {:?}", full_path);
+ std::fs::remove_dir_all(&full_path)
+ .map_err(|err| {
+ format_err!(
+ "removing backup snapshot {:?} failed - {}",
+ full_path,
+ err,
+ )
+ })?;
- Ok(relative_path)
+ Ok(())
}
- pub fn list_backups(&self) -> Result<Vec<BackupInfo>, Error> {
- let path = self.base_path();
+ /// Returns the time of the last successful backup
+ ///
+ /// Or None if there is no backup in the group (or the group dir does not exist).
+ pub fn last_successful_backup(&self, backup_group: &BackupGroup) -> Result<Option<i64>, Error> {
+ let base_path = self.base_path();
+ let mut group_path = base_path.clone();
+ group_path.push(backup_group.group_path());
- let mut list = vec![];
+ if group_path.exists() {
+ backup_group.last_successful_backup(&base_path)
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Returns the backup owner.
+ ///
+ /// The backup owner is the user who first created the backup group.
+ pub fn get_owner(&self, backup_group: &BackupGroup) -> Result<Userid, Error> {
+ let mut full_path = self.base_path();
+ full_path.push(backup_group.group_path());
+ full_path.push("owner");
+ let owner = proxmox::tools::fs::file_read_firstline(full_path)?;
+ Ok(owner.trim_end().parse()?) // remove trailing newline
+ }
- lazy_static! {
- static ref BACKUP_TYPE_REGEX: regex::Regex = regex::Regex::new(r"^(host|vm|ct)$").unwrap();
- static ref BACKUP_ID_REGEX: regex::Regex = regex::Regex::new(r"^[A-Za-z][A-Za-z0-9_-]+$").unwrap();
- static ref BACKUP_DATE_REGEX: regex::Regex = regex::Regex::new(
- r"^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}$").unwrap();
+ /// Set the backup owner.
+ pub fn set_owner(
+ &self,
+ backup_group: &BackupGroup,
+ userid: &Userid,
+ force: bool,
+ ) -> Result<(), Error> {
+ let mut path = self.base_path();
+ path.push(backup_group.group_path());
+ path.push("owner");
+
+ let mut open_options = std::fs::OpenOptions::new();
+ open_options.write(true);
+ open_options.truncate(true);
+
+ if force {
+ open_options.create(true);
+ } else {
+ open_options.create_new(true);
}
- tools::scandir(libc::AT_FDCWD, &path, &BACKUP_TYPE_REGEX, |l0_fd, backup_type, file_type| {
- if file_type != nix::dir::Type::Directory { return Ok(()); }
- tools::scandir(l0_fd, backup_type, &BACKUP_ID_REGEX, |l1_fd, backup_id, file_type| {
- if file_type != nix::dir::Type::Directory { return Ok(()); }
- tools::scandir(l1_fd, backup_id, &BACKUP_DATE_REGEX, |_, backup_time, file_type| {
- if file_type != nix::dir::Type::Directory { return Ok(()); }
+ let mut file = open_options.open(&path)
+ .map_err(|err| format_err!("unable to create owner file {:?} - {}", path, err))?;
- let dt = Utc.datetime_from_str(backup_time, "%Y-%m-%dT%H:%M:%S")?;
+ writeln!(file, "{}", userid)
+ .map_err(|err| format_err!("unable to write owner file {:?} - {}", path, err))?;
- list.push(BackupInfo {
- backup_type: backup_type.to_owned(),
- backup_id: backup_id.to_owned(),
- backup_time: dt,
- });
+ Ok(())
+ }
- Ok(())
- })
- })
- })?;
+ /// Create (if it does not already exists) and lock a backup group
+ ///
+ /// And set the owner to 'userid'. If the group already exists, it returns the
+ /// current owner (instead of setting the owner).
+ ///
+ /// This also acquires an exclusive lock on the directory and returns the lock guard.
+ pub fn create_locked_backup_group(
+ &self,
+ backup_group: &BackupGroup,
+ userid: &Userid,
+ ) -> Result<(Userid, DirLockGuard), Error> {
+ // create intermediate path first:
+ let base_path = self.base_path();
+
+ let mut full_path = base_path.clone();
+ full_path.push(backup_group.backup_type());
+ std::fs::create_dir_all(&full_path)?;
- Ok(list)
+ full_path.push(backup_group.backup_id());
+
+ // create the last component now
+ match std::fs::create_dir(&full_path) {
+ Ok(_) => {
+ let guard = lock_dir_noblock(&full_path, "backup group", "another backup is already running")?;
+ self.set_owner(backup_group, userid, false)?;
+ let owner = self.get_owner(backup_group)?; // just to be sure
+ Ok((owner, guard))
+ }
+ Err(ref err) if err.kind() == io::ErrorKind::AlreadyExists => {
+ let guard = lock_dir_noblock(&full_path, "backup group", "another backup is already running")?;
+ let owner = self.get_owner(backup_group)?; // just to be sure
+ Ok((owner, guard))
+ }
+ Err(err) => bail!("unable to create backup group {:?} - {}", full_path, err),
+ }
+ }
+
+ /// Creates a new backup snapshot inside a BackupGroup
+ ///
+ /// The BackupGroup directory needs to exist.
+ pub fn create_locked_backup_dir(&self, backup_dir: &BackupDir)
+ -> Result<(PathBuf, bool, DirLockGuard), Error>
+ {
+ let relative_path = backup_dir.relative_path();
+ let mut full_path = self.base_path();
+ full_path.push(&relative_path);
+
+ let lock = ||
+ lock_dir_noblock(&full_path, "snapshot", "internal error - tried creating snapshot that's already in use");
+
+ match std::fs::create_dir(&full_path) {
+ Ok(_) => Ok((relative_path, true, lock()?)),
+ Err(ref e) if e.kind() == io::ErrorKind::AlreadyExists => Ok((relative_path, false, lock()?)),
+ Err(e) => Err(e.into())
+ }
}
pub fn list_images(&self) -> Result<Vec<PathBuf>, Error> {
.map(|s| s.starts_with("."))
.unwrap_or(false)
}
-
+ let handle_entry_err = |err: walkdir::Error| {
+ if let Some(inner) = err.io_error() {
+ let path = err.path().unwrap_or(Path::new(""));
+ match inner.kind() {
+ io::ErrorKind::PermissionDenied => {
+ // only allow to skip ext4 fsck directory, avoid GC if, for example,
+ // a user got file permissions wrong on datastore rsync to new server
+ if err.depth() > 1 || !path.ends_with("lost+found") {
+ bail!("cannot continue garbage-collection safely, permission denied on: {}", path.display())
+ }
+ },
+ _ => bail!("unexpected error on datastore traversal: {} - {}", inner, path.display()),
+ }
+ }
+ Ok(())
+ };
for entry in walker.filter_entry(|e| !is_hidden(e)) {
- let path = entry?.into_path();
- if let Some(ext) = path.extension() {
- if ext == "iidx" {
- list.push(path);
- } else if ext == "aidx" {
+ let path = match entry {
+ Ok(entry) => entry.into_path(),
+ Err(err) => {
+ handle_entry_err(err)?;
+ continue
+ },
+ };
+ if let Ok(archive_type) = archive_type(&path) {
+ if archive_type == ArchiveType::FixedIndex || archive_type == ArchiveType::DynamicIndex {
list.push(path);
}
}
Ok(list)
}
- fn mark_used_chunks(&self, status: &mut GarbageCollectionStatus) -> Result<(), Error> {
+ // mark chunks used by ``index`` as used
+ fn index_mark_used_chunks<I: IndexFile>(
+ &self,
+ index: I,
+ file_name: &Path, // only used for error reporting
+ status: &mut GarbageCollectionStatus,
+ worker: &dyn TaskState,
+ ) -> Result<(), Error> {
+
+ status.index_file_count += 1;
+ status.index_data_bytes += index.index_bytes();
+
+ for pos in 0..index.index_count() {
+ worker.check_abort()?;
+ tools::fail_on_shutdown()?;
+ let digest = index.index_digest(pos).unwrap();
+ if let Err(err) = self.chunk_store.touch_chunk(digest) {
+ crate::task_warn!(
+ worker,
+ "warning: unable to access chunk {}, required by {:?} - {}",
+ proxmox::tools::digest_to_hex(digest),
+ file_name,
+ err,
+ );
+ }
+ }
+ Ok(())
+ }
+
+ fn mark_used_chunks(
+ &self,
+ status: &mut GarbageCollectionStatus,
+ worker: &dyn TaskState,
+ ) -> Result<(), Error> {
let image_list = self.list_images()?;
+ let image_count = image_list.len();
+
+ let mut done = 0;
+
+ let mut last_percentage: usize = 0;
+
for path in image_list {
- if let Some(ext) = path.extension() {
- if ext == "iidx" {
- let index = self.open_image_reader(&path)?;
- index.mark_used_chunks(status)?;
- } else if ext == "aidx" {
- let index = self.open_archive_reader(&path)?;
- index.mark_used_chunks(status)?;
+
+ worker.check_abort()?;
+ tools::fail_on_shutdown()?;
+
+ if let Ok(archive_type) = archive_type(&path) {
+ if archive_type == ArchiveType::FixedIndex {
+ let index = self.open_fixed_reader(&path)?;
+ self.index_mark_used_chunks(index, &path, status, worker)?;
+ } else if archive_type == ArchiveType::DynamicIndex {
+ let index = self.open_dynamic_reader(&path)?;
+ self.index_mark_used_chunks(index, &path, status, worker)?;
}
}
+ done += 1;
+
+ let percentage = done*100/image_count;
+ if percentage > last_percentage {
+ crate::task_log!(
+ worker,
+ "percentage done: phase1 {}% ({} of {} index files)",
+ percentage,
+ done,
+ image_count,
+ );
+ last_percentage = percentage;
+ }
}
Ok(())
- }
+ }
+
+ pub fn last_gc_status(&self) -> GarbageCollectionStatus {
+ self.last_gc_status.lock().unwrap().clone()
+ }
- pub fn garbage_collection(&self) -> Result<(), Error> {
+ pub fn garbage_collection_running(&self) -> bool {
+ if let Ok(_) = self.gc_mutex.try_lock() { false } else { true }
+ }
+
+ pub fn garbage_collection(&self, worker: &dyn TaskState, upid: &UPID) -> Result<(), Error> {
if let Ok(ref mut _mutex) = self.gc_mutex.try_lock() {
+ // avoids that we run GC if an old daemon process has still a
+ // running backup writer, which is not save as we have no "oldest
+ // writer" information and thus no safe atime cutoff
+ let _exclusive_lock = self.chunk_store.try_exclusive_lock()?;
+
+ let phase1_start_time = proxmox::tools::time::epoch_i64();
+ let oldest_writer = self.chunk_store.oldest_writer().unwrap_or(phase1_start_time);
+
let mut gc_status = GarbageCollectionStatus::default();
- gc_status.used_bytes = 0;
+ gc_status.upid = Some(upid.to_string());
+
+ crate::task_log!(worker, "Start GC phase1 (mark used chunks)");
+
+ self.mark_used_chunks(&mut gc_status, worker)?;
+
+ crate::task_log!(worker, "Start GC phase2 (sweep unused chunks)");
+ self.chunk_store.sweep_unused_chunks(
+ oldest_writer,
+ phase1_start_time,
+ &mut gc_status,
+ worker,
+ )?;
+
+ crate::task_log!(
+ worker,
+ "Removed garbage: {}",
+ HumanByte::from(gc_status.removed_bytes),
+ );
+ crate::task_log!(worker, "Removed chunks: {}", gc_status.removed_chunks);
+ if gc_status.pending_bytes > 0 {
+ crate::task_log!(
+ worker,
+ "Pending removals: {} (in {} chunks)",
+ HumanByte::from(gc_status.pending_bytes),
+ gc_status.pending_chunks,
+ );
+ }
+ if gc_status.removed_bad > 0 {
+ crate::task_log!(worker, "Removed bad files: {}", gc_status.removed_bad);
+ }
- println!("Start GC phase1 (mark chunks)");
+ crate::task_log!(
+ worker,
+ "Original data usage: {}",
+ HumanByte::from(gc_status.index_data_bytes),
+ );
+
+ if gc_status.index_data_bytes > 0 {
+ let comp_per = (gc_status.disk_bytes as f64 * 100.)/gc_status.index_data_bytes as f64;
+ crate::task_log!(
+ worker,
+ "On-Disk usage: {} ({:.2}%)",
+ HumanByte::from(gc_status.disk_bytes),
+ comp_per,
+ );
+ }
- self.mark_used_chunks(&mut gc_status)?;
+ crate::task_log!(worker, "On-Disk chunks: {}", gc_status.disk_chunks);
- println!("Start GC phase2 (sweep unused chunks)");
- self.chunk_store.sweep_unused_chunks(&mut gc_status)?;
+ if gc_status.disk_chunks > 0 {
+ let avg_chunk = gc_status.disk_bytes/(gc_status.disk_chunks as u64);
+ crate::task_log!(worker, "Average chunk size: {}", HumanByte::from(avg_chunk));
+ }
- println!("Used bytes: {}", gc_status.used_bytes);
- println!("Used chunks: {}", gc_status.used_chunks);
- println!("Disk bytes: {}", gc_status.disk_bytes);
- println!("Disk chunks: {}", gc_status.disk_chunks);
+ *self.last_gc_status.lock().unwrap() = gc_status;
} else {
- println!("Start GC failed - (already running/locked)");
+ bail!("Start GC failed - (already running/locked)");
}
Ok(())
}
+
+ pub fn try_shared_chunk_store_lock(&self) -> Result<tools::ProcessLockSharedGuard, Error> {
+ self.chunk_store.try_shared_lock()
+ }
+
+ pub fn chunk_path(&self, digest:&[u8; 32]) -> (PathBuf, String) {
+ self.chunk_store.chunk_path(digest)
+ }
+
+ pub fn cond_touch_chunk(&self, digest: &[u8; 32], fail_if_not_exist: bool) -> Result<bool, Error> {
+ self.chunk_store.cond_touch_chunk(digest, fail_if_not_exist)
+ }
+
+ pub fn insert_chunk(
+ &self,
+ chunk: &DataBlob,
+ digest: &[u8; 32],
+ ) -> Result<(bool, u64), Error> {
+ self.chunk_store.insert_chunk(chunk, digest)
+ }
+
+ pub fn load_blob(&self, backup_dir: &BackupDir, filename: &str) -> Result<DataBlob, Error> {
+ let mut path = self.base_path();
+ path.push(backup_dir.relative_path());
+ path.push(filename);
+
+ proxmox::try_block!({
+ let mut file = std::fs::File::open(&path)?;
+ DataBlob::load_from_reader(&mut file)
+ }).map_err(|err| format_err!("unable to load blob '{:?}' - {}", path, err))
+ }
+
+
+ pub fn load_chunk(&self, digest: &[u8; 32]) -> Result<DataBlob, Error> {
+
+ let (chunk_path, digest_str) = self.chunk_store.chunk_path(digest);
+
+ proxmox::try_block!({
+ let mut file = std::fs::File::open(&chunk_path)?;
+ DataBlob::load_from_reader(&mut file)
+ }).map_err(|err| format_err!(
+ "store '{}', unable to load chunk '{}' - {}",
+ self.name(),
+ digest_str,
+ err,
+ ))
+ }
+
+ pub fn load_manifest(
+ &self,
+ backup_dir: &BackupDir,
+ ) -> Result<(BackupManifest, u64), Error> {
+ let blob = self.load_blob(backup_dir, MANIFEST_BLOB_NAME)?;
+ let raw_size = blob.raw_size();
+ let manifest = BackupManifest::try_from(blob)?;
+ Ok((manifest, raw_size))
+ }
+
+ pub fn load_manifest_json(
+ &self,
+ backup_dir: &BackupDir,
+ ) -> Result<Value, Error> {
+ let blob = self.load_blob(backup_dir, MANIFEST_BLOB_NAME)?;
+ // no expected digest available
+ let manifest_data = blob.decode(None, None)?;
+ let manifest: Value = serde_json::from_slice(&manifest_data[..])?;
+ Ok(manifest)
+ }
+
+ pub fn store_manifest(
+ &self,
+ backup_dir: &BackupDir,
+ manifest: Value,
+ ) -> Result<(), Error> {
+ let manifest = serde_json::to_string_pretty(&manifest)?;
+ let blob = DataBlob::encode(manifest.as_bytes(), None, true)?;
+ let raw_data = blob.raw_data();
+
+ let mut path = self.base_path();
+ path.push(backup_dir.relative_path());
+ path.push(MANIFEST_BLOB_NAME);
+
+ replace_file(&path, raw_data, CreateOptions::new())?;
+
+ Ok(())
+ }
}
projects / proxmox-backup.git / blobdiff