diff --git a/pbs-datastore/Cargo.toml b/pbs-datastore/Cargo.toml
index c5eb2353..d24377e6 100644
--- a/pbs-datastore/Cargo.toml
+++ b/pbs-datastore/Cargo.toml
@@ -10,6 +10,7 @@ anyhow = "1.0"
 base64 = "0.12"
 crc32fast = "1"
 endian_trait = { version = "0.6", features = [ "arrays" ] }
+futures = "0.3"
 libc = "0.2"
 log = "0.4"
 nix = "0.19.1"
diff --git a/src/backup/cached_chunk_reader.rs b/pbs-datastore/src/cached_chunk_reader.rs
similarity index 98%
rename from src/backup/cached_chunk_reader.rs
rename to pbs-datastore/src/cached_chunk_reader.rs
index e88003e4..6cbec98e 100644
--- a/src/backup/cached_chunk_reader.rs
+++ b/pbs-datastore/src/cached_chunk_reader.rs
@@ -13,10 +13,11 @@ use tokio::io::{AsyncRead, AsyncSeek, ReadBuf};
 use proxmox::io_format_err;
 use proxmox::sys::error::io_err_other;
 
-use pbs_datastore::index::IndexFile;
-use pbs_datastore::read_chunk::AsyncReadChunk;
 use pbs_tools::async_lru_cache::{AsyncCacher, AsyncLruCache};
 
+use crate::index::IndexFile;
+use crate::read_chunk::AsyncReadChunk;
+
 struct AsyncChunkCacher<T> {
     reader: Arc<T>,
 }
diff --git a/pbs-datastore/src/lib.rs b/pbs-datastore/src/lib.rs
index f0765514..b113d0a6 100644
--- a/pbs-datastore/src/lib.rs
+++ b/pbs-datastore/src/lib.rs
@@ -180,6 +180,7 @@ pub fn backup_group() -> Result<nix::unistd::Group, Error> {
 
 pub mod backup_info;
 pub mod catalog;
+pub mod cached_chunk_reader;
 pub mod checksum_reader;
 pub mod checksum_writer;
 pub mod chunk_stat;
diff --git a/src/backup/mod.rs b/src/backup/mod.rs
index 6ab3278d..c0ab041c 100644
--- a/src/backup/mod.rs
+++ b/src/backup/mod.rs
@@ -75,6 +75,7 @@ pub use pbs_datastore::prune::*;
 
 pub use pbs_datastore::store_progress::StoreProgress;
 
+pub use pbs_datastore::cached_chunk_reader::*;
 pub use pbs_datastore::dynamic_index::*;
 pub use pbs_datastore::fixed_index;
 pub use pbs_datastore::fixed_index::*;
@@ -91,9 +92,6 @@ pub use datastore::*;
 mod verify;
 pub use verify::*;
 
-mod cached_chunk_reader;
-pub use cached_chunk_reader::*;
-
 pub struct BackupLockGuard(std::fs::File);
 
 /// Open or create a lock file owned by user "backup" and lock it.
diff --git a/src/bin/proxmox_backup_client/mount.rs b/src/bin/proxmox_backup_client/mount.rs
index 6a80b558..70123a36 100644
--- a/src/bin/proxmox_backup_client/mount.rs
+++ b/src/bin/proxmox_backup_client/mount.rs
@@ -20,12 +20,11 @@ use proxmox::tools::fd::Fd;
 use pbs_datastore::{BackupDir, BackupGroup, CryptConfig, load_and_decrypt_key};
 use pbs_datastore::index::IndexFile;
 use pbs_datastore::dynamic_index::BufferedDynamicReader;
+use pbs_datastore::cached_chunk_reader::CachedChunkReader;
 use pbs_client::tools::key_source::get_encryption_key_password;
 use pbs_client::{BackupReader, RemoteChunkReader};
 use pbs_tools::json::required_string_param;
 
-use proxmox_backup::backup::CachedChunkReader;
-
 use crate::{
     REPO_URL_SCHEMA,
     extract_repository_from_value,