diff --git a/ecstore/src/disk.rs b/ecstore/src/disk.rs
index 7527f91e0..bed35e51e 100644
--- a/ecstore/src/disk.rs
+++ b/ecstore/src/disk.rs
@@ -3,7 +3,7 @@ use std::{
     path::{Path, PathBuf},
 };
 
-use anyhow::Error;
+use anyhow::{Error, Result};
 use bytes::Bytes;
 use futures::future::join_all;
 use path_absolutize::Absolutize;
@@ -32,7 +32,7 @@ pub struct DiskOption {
     pub health_check: bool,
 }
 
-pub async fn new_disk(ep: &Endpoint, opt: &DiskOption) -> Result<DiskStore, Error> {
+pub async fn new_disk(ep: &Endpoint, opt: &DiskOption) -> Result<DiskStore> {
     if ep.is_local {
         Ok(LocalDisk::new(ep, opt.cleanup).await?)
     } else {
@@ -71,7 +71,7 @@ pub async fn init_disks(
     (storages, errors)
 }
 
-// pub async fn load_format(&self, heal: bool) -> Result<FormatV3, Error> {
+// pub async fn load_format(&self, heal: bool) -> Result<FormatV3> {
 //     unimplemented!()
 // }
 
@@ -87,7 +87,7 @@ pub struct LocalDisk {
 }
 
 impl LocalDisk {
-    pub async fn new(ep: &Endpoint, cleanup: bool) -> Result<Box<Self>, Error> {
+    pub async fn new(ep: &Endpoint, cleanup: bool) -> Result<Box<Self>> {
         let root = fs::canonicalize(ep.url.path()).await?;
 
         if cleanup {
@@ -134,7 +134,7 @@ impl LocalDisk {
         Ok(Box::new(disk))
     }
 
-    async fn make_meta_volumes(&self) -> Result<(), Error> {
+    async fn make_meta_volumes(&self) -> Result<()> {
         let buckets = format!("{}/{}", RUSTFS_META_BUCKET, BUCKET_META_PREFIX);
         let multipart = format!("{}/{}", RUSTFS_META_BUCKET, "multipart");
         let config = format!("{}/{}", RUSTFS_META_BUCKET, "config");
@@ -149,22 +149,22 @@ impl LocalDisk {
         self.make_volumes(defaults).await
     }
 
-    pub fn resolve_abs_path(&self, path: impl AsRef<Path>) -> Result<PathBuf, Error> {
+    pub fn resolve_abs_path(&self, path: impl AsRef<Path>) -> Result<PathBuf> {
         Ok(path.as_ref().absolutize_virtually(&self.root)?.into_owned())
     }
 
-    pub fn get_object_path(&self, bucket: &str, key: &str) -> Result<PathBuf, Error> {
+    pub fn get_object_path(&self, bucket: &str, key: &str) -> Result<PathBuf> {
         let dir = Path::new(&bucket);
         let file_path = Path::new(&key);
         self.resolve_abs_path(dir.join(file_path))
     }
 
-    pub fn get_bucket_path(&self, bucket: &str) -> Result<PathBuf, Error> {
+    pub fn get_bucket_path(&self, bucket: &str) -> Result<PathBuf> {
         let dir = Path::new(&bucket);
         self.resolve_abs_path(dir)
     }
 
-    // pub async fn load_format(&self) -> Result<Option<FormatV3>, Error> {
+    // pub async fn load_format(&self) -> Result<Option<FormatV3>> {
     //     let p = self.get_object_path(RUSTFS_META_BUCKET, FORMAT_CONFIG_FILE)?;
     //     let content = fs::read(&p).await?;
 
@@ -173,9 +173,7 @@ impl LocalDisk {
 }
 
 // 过滤 std::io::ErrorKind::NotFound
-pub async fn read_file_exists(
-    path: impl AsRef<Path>,
-) -> Result<(Vec<u8>, Option<Metadata>), Error> {
+pub async fn read_file_exists(path: impl AsRef<Path>) -> Result<(Vec<u8>, Option<Metadata>)> {
     let p = path.as_ref();
     let (data, meta) = match read_file_all(&p).await {
         Ok((data, meta)) => (data, Some(meta)),
@@ -196,7 +194,7 @@ pub async fn read_file_exists(
     Ok((data, meta))
 }
 
-pub async fn read_file_all(path: impl AsRef<Path>) -> Result<(Vec<u8>, Metadata), Error> {
+pub async fn read_file_all(path: impl AsRef<Path>) -> Result<(Vec<u8>, Metadata)> {
     let p = path.as_ref();
     let meta = read_file_metadata(&path).await?;
 
@@ -205,7 +203,7 @@ pub async fn read_file_all(path: impl AsRef<Path>) -> Result<(Vec<u8>, Metadata)
     Ok((data, meta))
 }
 
-pub async fn read_file_metadata(p: impl AsRef<Path>) -> Result<Metadata, Error> {
+pub async fn read_file_metadata(p: impl AsRef<Path>) -> Result<Metadata> {
     let meta = fs::metadata(&p).await.map_err(|e| match e.kind() {
         ErrorKind::NotFound => Error::new(DiskError::FileNotFound),
         ErrorKind::PermissionDenied => Error::new(DiskError::FileAccessDenied),
@@ -215,7 +213,7 @@ pub async fn read_file_metadata(p: impl AsRef<Path>) -> Result<Metadata, Error>
     Ok(meta)
 }
 
-pub async fn check_volume_exists(p: impl AsRef<Path>) -> Result<(), Error> {
+pub async fn check_volume_exists(p: impl AsRef<Path>) -> Result<()> {
     fs::metadata(&p).await.map_err(|e| match e.kind() {
         ErrorKind::NotFound => Error::new(DiskError::VolumeNotFound),
         ErrorKind::PermissionDenied => Error::new(DiskError::FileAccessDenied),
@@ -244,14 +242,14 @@ fn skip_access_checks(p: impl AsRef<str>) -> bool {
 #[async_trait::async_trait]
 impl DiskAPI for LocalDisk {
     #[must_use]
-    async fn read_all(&self, volume: &str, path: &str) -> Result<Bytes, Error> {
+    async fn read_all(&self, volume: &str, path: &str) -> Result<Bytes> {
         let p = self.get_object_path(&volume, &path)?;
         let (data, _) = read_file_all(&p).await?;
 
         Ok(Bytes::from(data))
     }
 
-    async fn write_all(&self, volume: &str, path: &str, data: Bytes) -> Result<(), Error> {
+    async fn write_all(&self, volume: &str, path: &str, data: Bytes) -> Result<()> {
         let p = self.get_object_path(&volume, &path)?;
 
         // create top dir if not exists
@@ -267,7 +265,7 @@ impl DiskAPI for LocalDisk {
         src_path: &str,
         dst_volume: &str,
         dst_path: &str,
-    ) -> Result<(), Error> {
+    ) -> Result<()> {
         if !skip_access_checks(&src_volume) {
             check_volume_exists(&src_volume).await?;
         }
@@ -306,7 +304,7 @@ impl DiskAPI for LocalDisk {
         Ok(())
     }
 
-    async fn make_volumes(&self, volumes: Vec<&str>) -> Result<(), Error> {
+    async fn make_volumes(&self, volumes: Vec<&str>) -> Result<()> {
         for vol in volumes {
             if let Err(e) = self.make_volume(vol).await {
                 match &e.downcast_ref::<DiskError>() {
@@ -319,7 +317,7 @@ impl DiskAPI for LocalDisk {
         }
         Ok(())
     }
-    async fn make_volume(&self, volume: &str) -> Result<(), Error> {
+    async fn make_volume(&self, volume: &str) -> Result<()> {
         let p = self.get_bucket_path(&volume)?;
         match File::open(&p).await {
             Ok(_) => (),
@@ -339,7 +337,7 @@ impl DiskAPI for LocalDisk {
 // pub struct RemoteDisk {}
 
 // impl RemoteDisk {
-//     pub fn new(_ep: &Endpoint, _health_check: bool) -> Result<Self, Error> {
+//     pub fn new(_ep: &Endpoint, _health_check: bool) -> Result<Self> {
 //         Ok(Self {})
 //     }
 // }
@@ -374,7 +372,7 @@ pub enum DiskError {
 }
 
 impl DiskError {
-    pub fn check_disk_fatal_errs(errs: &Vec<Option<Error>>) -> Result<(), Error> {
+    pub fn check_disk_fatal_errs(errs: &Vec<Option<Error>>) -> Result<()> {
         println!("errs: {:?}", errs);
 
         if Self::count_errs(errs, &DiskError::UnsupportedDisk) == errs.len() {
diff --git a/ecstore/src/disk_api.rs b/ecstore/src/disk_api.rs
index f96d3b574..5cc92faa1 100644
--- a/ecstore/src/disk_api.rs
+++ b/ecstore/src/disk_api.rs
@@ -1,20 +1,20 @@
 use std::fmt::Debug;
 
-use anyhow::Error;
+use anyhow::Result;
 use bytes::Bytes;
 
 #[async_trait::async_trait]
 pub trait DiskAPI: Debug + Send + Sync + 'static {
-    async fn read_all(&self, volume: &str, path: &str) -> Result<Bytes, Error>;
-    async fn write_all(&self, volume: &str, path: &str, data: Bytes) -> Result<(), Error>;
+    async fn read_all(&self, volume: &str, path: &str) -> Result<Bytes>;
+    async fn write_all(&self, volume: &str, path: &str, data: Bytes) -> Result<()>;
     async fn rename_file(
         &self,
         src_volume: &str,
         src_path: &str,
         dst_volume: &str,
         dst_path: &str,
-    ) -> Result<(), Error>;
+    ) -> Result<()>;
 
-    async fn make_volumes(&self, volume: Vec<&str>) -> Result<(), Error>;
-    async fn make_volume(&self, volume: &str) -> Result<(), Error>;
+    async fn make_volumes(&self, volume: Vec<&str>) -> Result<()>;
+    async fn make_volume(&self, volume: &str) -> Result<()>;
 }
diff --git a/ecstore/src/disks_layout.rs b/ecstore/src/disks_layout.rs
index d3bb888a9..40809bf22 100644
--- a/ecstore/src/disks_layout.rs
+++ b/ecstore/src/disks_layout.rs
@@ -1,6 +1,6 @@
 use std::collections::{HashMap, HashSet};
 
-use anyhow::Error;
+use anyhow::{Error, Result};
 use serde::Deserialize;
 
 use super::ellipses::*;
@@ -18,7 +18,7 @@ pub struct DisksLayout {
 }
 
 impl DisksLayout {
-    pub fn new(args: &Vec<String>) -> Result<DisksLayout, Error> {
+    pub fn new(args: &Vec<String>) -> Result<DisksLayout> {
         if args.is_empty() {
             return Err(Error::msg("Invalid argument"));
         }
@@ -67,7 +67,7 @@ impl DisksLayout {
     }
 }
 
-fn get_all_sets(set_drive_count: usize, args: &Vec<String>) -> Result<Vec<Vec<String>>, Error> {
+fn get_all_sets(set_drive_count: usize, args: &Vec<String>) -> Result<Vec<Vec<String>>> {
     let set_args;
     if !has_ellipses(args) {
         let set_indexes: Vec<Vec<usize>>;
@@ -114,7 +114,7 @@ pub struct EndpointSet {
 }
 
 impl EndpointSet {
-    pub fn new(args: &Vec<String>, set_div_count: usize) -> Result<EndpointSet, Error> {
+    pub fn new(args: &Vec<String>, set_div_count: usize) -> Result<EndpointSet> {
         let mut arg_patterns = Vec::with_capacity(args.len());
         for arg in args.iter() {
             arg_patterns.push(find_ellipses_patterns(arg.as_str())?);
@@ -164,7 +164,7 @@ impl EndpointSet {
     }
 }
 
-// fn parse_endpoint_set(set_div_count: usize, args: &Vec<String>) -> Result<EndpointSet, Error> {
+// fn parse_endpoint_set(set_div_count: usize, args: &Vec<String>) -> Result<EndpointSet> {
 //     let mut arg_patterns = Vec::with_capacity(args.len());
 //     for arg in args.iter() {
 //         arg_patterns.push(find_ellipses_patterns(arg.as_str())?);
@@ -267,7 +267,7 @@ fn get_set_indexes(
     totalsizes: &Vec<usize>,
     set_div_count: usize,
     arg_patterns: &Vec<ArgPattern>,
-) -> Result<Vec<Vec<usize>>, Error> {
+) -> Result<Vec<Vec<usize>>> {
     if args.is_empty() || totalsizes.is_empty() {
         return Err(Error::msg("Invalid argument"));
     }
diff --git a/ecstore/src/ellipses.rs b/ecstore/src/ellipses.rs
index 42f2ca0c1..17623cc0f 100644
--- a/ecstore/src/ellipses.rs
+++ b/ecstore/src/ellipses.rs
@@ -1,6 +1,6 @@
 use lazy_static::*;
 
-use anyhow::Error;
+use anyhow::{Error, Result};
 use regex::Regex;
 
 lazy_static! {
@@ -89,7 +89,7 @@ impl ArgPattern {
 }
 
 #[allow(dead_code)]
-pub fn find_ellipses_patterns(arg: &str) -> Result<ArgPattern, Error> {
+pub fn find_ellipses_patterns(arg: &str) -> Result<ArgPattern> {
     let mut caps = match ELLIPSES_RE.captures(arg) {
         Some(caps) => caps,
         None => return Err(Error::msg("Invalid argument")),
@@ -175,7 +175,7 @@ pub fn has_ellipses(s: &Vec<String>) -> bool {
 // `{1...64}`
 // `{33...64}`
 #[allow(dead_code)]
-pub fn parse_ellipses_range(partten: &str) -> Result<Vec<String>, Error> {
+pub fn parse_ellipses_range(partten: &str) -> Result<Vec<String>> {
     if !partten.contains(OPEN_BRACES) {
         return Err(Error::msg("Invalid argument"));
     }
diff --git a/ecstore/src/endpoint.rs b/ecstore/src/endpoint.rs
index e8332dad1..ca0ab7f92 100644
--- a/ecstore/src/endpoint.rs
+++ b/ecstore/src/endpoint.rs
@@ -3,7 +3,7 @@ use super::utils::{
     net::{is_local_host, split_host_port},
     string::new_string_set,
 };
-use anyhow::Error;
+use anyhow::{Error, Result};
 use std::fmt::Display;
 use std::{collections::HashMap, net::IpAddr, path::Path, usize};
 use url::{ParseError, Url};
@@ -91,7 +91,7 @@ fn is_host_ip(ip_str: &str) -> bool {
 }
 
 impl Endpoint {
-    pub fn new(arg: &str) -> Result<Self, Error> {
+    pub fn new(arg: &str) -> Result<Self> {
         if is_empty_path(arg) {
             return Err(Error::msg("不支持空或根endpoint"));
         }
@@ -207,7 +207,7 @@ impl Endpoint {
         self.disk_idx = idx
     }
 
-    fn update_islocal(&mut self) -> Result<(), Error> {
+    fn update_islocal(&mut self) -> Result<()> {
         if self.url.has_host() {
             self.is_local = is_local_host(
                 self.url.host().unwrap(),
@@ -253,7 +253,7 @@ impl Endpoints {
     pub fn slice(&self, start: usize, end: usize) -> Vec<Endpoint> {
         self.0.as_slice()[start..end].to_vec()
     }
-    pub fn from_args(args: Vec<String>) -> Result<Self, Error> {
+    pub fn from_args(args: Vec<String>) -> Result<Self> {
         let mut ep_type = EndpointType::UnKnow;
         let mut scheme = String::new();
         let mut eps = Vec::new();
@@ -297,7 +297,7 @@ impl PoolEndpointList {
     }
 
     // TODO: 解析域名，判断哪个是本地地址
-    fn update_is_local(&mut self) -> Result<(), Error> {
+    fn update_is_local(&mut self) -> Result<()> {
         for eps in self.0.iter_mut() {
             for ep in eps.iter_mut() {
                 // TODO:
@@ -336,7 +336,7 @@ impl EndpointServerPools {
         server_addr: String,
         pool_args: &Vec<PoolDisksLayout>,
         legacy: bool,
-    ) -> Result<(EndpointServerPools, SetupType), Error> {
+    ) -> Result<(EndpointServerPools, SetupType)> {
         if pool_args.is_empty() {
             return Err(Error::msg("无效参数"));
         }
@@ -380,7 +380,7 @@ impl EndpointServerPools {
         self.0.push(pes)
     }
 
-    pub fn add(&mut self, eps: PoolEndpoints) -> Result<(), Error> {
+    pub fn add(&mut self, eps: PoolEndpoints) -> Result<()> {
         let mut exits = new_string_set();
         for peps in self.0.iter() {
             for ep in peps.endpoints.0.iter() {
@@ -472,7 +472,7 @@ fn is_single_drive_layout(pools_layout: &Vec<PoolDisksLayout>) -> bool {
 pub fn create_pool_endpoints(
     server_addr: String,
     pools: &Vec<PoolDisksLayout>,
-) -> Result<(Vec<Endpoints>, SetupType), Error> {
+) -> Result<(Vec<Endpoints>, SetupType)> {
     if is_empty_layout(pools) {
         return Err(Error::msg("empty layout"));
     }
@@ -571,7 +571,7 @@ fn create_server_endpoints(
     server_addr: String,
     pool_args: &Vec<PoolDisksLayout>,
     legacy: bool,
-) -> Result<(EndpointServerPools, SetupType), Error> {
+) -> Result<(EndpointServerPools, SetupType)> {
     if pool_args.is_empty() {
         return Err(Error::msg("无效参数"));
     }
diff --git a/ecstore/src/format.rs b/ecstore/src/format.rs
index 4535be5eb..4781fa4e3 100644
--- a/ecstore/src/format.rs
+++ b/ecstore/src/format.rs
@@ -1,4 +1,4 @@
-use anyhow::Error;
+use anyhow::{Error, Result};
 use serde::{Deserialize, Serialize};
 use serde_json::Error as JsonError;
 use uuid::Uuid;
@@ -165,7 +165,7 @@ impl FormatV3 {
     /// format, after successful validation.
     ///   - i'th position is the set index
     ///   - j'th position is the disk index in the current set
-    pub fn find_disk_index_by_disk_id(&self, disk_id: Uuid) -> Result<(usize, usize), Error> {
+    pub fn find_disk_index_by_disk_id(&self, disk_id: Uuid) -> Result<(usize, usize)> {
         if disk_id == Uuid::nil() {
             return Err(Error::new(disk::DiskError::DiskNotFound));
         }
diff --git a/ecstore/src/sets.rs b/ecstore/src/sets.rs
index de4d20ada..aedb44cce 100644
--- a/ecstore/src/sets.rs
+++ b/ecstore/src/sets.rs
@@ -1,4 +1,4 @@
-use anyhow::Error;
+use anyhow::Result;
 use uuid::Uuid;
 
 use crate::{endpoint::PoolEndpoints, format::FormatV3};
@@ -22,7 +22,7 @@ impl Sets {
         fm: &FormatV3,
         pool_idx: usize,
         partiy_count: usize,
-    ) -> Result<Self, Error> {
+    ) -> Result<Self> {
         let set_count = fm.erasure.sets.len();
         let set_drive_count = fm.erasure.sets[0].len();
 
diff --git a/ecstore/src/store.rs b/ecstore/src/store.rs
index c35738412..af7d868d9 100644
--- a/ecstore/src/store.rs
+++ b/ecstore/src/store.rs
@@ -1,6 +1,6 @@
 use std::collections::HashMap;
 
-use anyhow::Error;
+use anyhow::{Error, Result};
 use uuid::Uuid;
 
 use crate::{
@@ -8,7 +8,7 @@ use crate::{
     disks_layout::DisksLayout,
     endpoint::EndpointServerPools,
     sets::Sets,
-    store_api::StorageAPI,
+    store_api::{MakeBucketOptions, StorageAPI},
     store_init,
 };
 
@@ -22,7 +22,7 @@ pub struct ECStore {
 }
 
 impl ECStore {
-    pub async fn new(address: String, endpoints: Vec<String>) -> Result<Self, Error> {
+    pub async fn new(address: String, endpoints: Vec<String>) -> Result<Self> {
         let layouts = DisksLayout::new(&endpoints)?;
 
         let mut deployment_id = None;
@@ -88,7 +88,11 @@ impl ECStore {
 }
 
 impl StorageAPI for ECStore {
-    async fn put_object(&self, bucket: &str, objcet: &str) -> Result<(), Error> {
+    async fn make_bucket(&self, bucket: &str, opts: &MakeBucketOptions) -> Result<()> {
+        // TODO:  check valid bucket name
+        unimplemented!()
+    }
+    async fn put_object(&self, bucket: &str, objcet: &str) -> Result<()> {
         unimplemented!()
     }
 }
diff --git a/ecstore/src/store_api.rs b/ecstore/src/store_api.rs
index fdb42106c..c74a68a04 100644
--- a/ecstore/src/store_api.rs
+++ b/ecstore/src/store_api.rs
@@ -1,5 +1,9 @@
-use anyhow::Error;
+use anyhow::Result;
+
+pub struct MakeBucketOptions {}
 
 pub trait StorageAPI {
-    async fn put_object(&self, bucket: &str, objcet: &str) -> Result<(), Error>;
+    async fn make_bucket(&self, bucket: &str, opts: &MakeBucketOptions) -> Result<()>;
+
+    async fn put_object(&self, bucket: &str, objcet: &str) -> Result<()>;
 }
diff --git a/ecstore/src/utils/net.rs b/ecstore/src/utils/net.rs
index 6730f4d83..734e6a3ad 100644
--- a/ecstore/src/utils/net.rs
+++ b/ecstore/src/utils/net.rs
@@ -3,11 +3,11 @@ use std::{
     net::{IpAddr, ToSocketAddrs},
 };
 
-use anyhow::Error;
+use anyhow::{Error, Result};
 use netif;
 use url::Host;
 
-pub fn split_host_port(s: &str) -> Result<(String, u16), Error> {
+pub fn split_host_port(s: &str) -> Result<(String, u16)> {
     let parts: Vec<&str> = s.split(':').collect();
     if parts.len() == 2 {
         if let Ok(port) = parts[1].parse::<u16>() {