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replace AsyncIndexReader with SeekableCachedChunkReader 

admin/datastore reads linearly only, so no need for cache (capacity of 1
basically means no cache except for the currently active chunk).
mount can do random access too, so cache last 8 chunks for possibly a
mild performance improvement.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
This commit is contained in:
Stefan Reiter 2021-06-07 17:35:28 +02:00 committed by Wolfgang Bumiller
parent 10351f7075
commit 1ef6e8b6a7
2 changed files with 4 additions and 4 deletions
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4
src/api2/admin/datastore.rs
View File

@ -1182,7 +1182,7 @@ pub fn download_file_decoded(
manifest.verify_file(&file_name, &csum, size)?;
let chunk_reader = LocalChunkReader::new(datastore, None, CryptMode::None);
let reader = AsyncIndexReader::new(index, chunk_reader);
let reader = CachedChunkReader::new(chunk_reader, index, 1).seekable();
Body::wrap_stream(AsyncReaderStream::new(reader)
.map_err(move |err| {
eprintln!("error during streaming of '{:?}' - {}", path, err);
@ -1197,7 +1197,7 @@ pub fn download_file_decoded(
manifest.verify_file(&file_name, &csum, size)?;
let chunk_reader = LocalChunkReader::new(datastore, None, CryptMode::None);
let reader = AsyncIndexReader::new(index, chunk_reader);
let reader = CachedChunkReader::new(chunk_reader, index, 1).seekable();
Body::wrap_stream(AsyncReaderStream::with_buffer_size(reader, 4*1024*1024)
.map_err(move |err| {
eprintln!("error during streaming of '{:?}' - {}", path, err);

4
src/bin/proxmox_backup_client/mount.rs
View File

@ -25,7 +25,7 @@ use proxmox_backup::backup::{
BackupDir,
BackupGroup,
BufferedDynamicReader,
AsyncIndexReader,
CachedChunkReader,
};
use proxmox_backup::client::*;
@ -281,7 +281,7 @@ async fn mount_do(param: Value, pipe: Option<Fd>) -> Result<Value, Error> {
let index = client.download_fixed_index(&manifest, &server_archive_name).await?;
let size = index.index_bytes();
let chunk_reader = RemoteChunkReader::new(client.clone(), crypt_config, file_info.chunk_crypt_mode(), HashMap::new());
let reader = AsyncIndexReader::new(index, chunk_reader);
let reader = CachedChunkReader::new(chunk_reader, index, 8).seekable();
let name = &format!("{}:{}/{}", repo.to_string(), path, archive_name);
let name_escaped = tools::systemd::escape_unit(name, false);