diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index dd44cbe..303a185 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -10,7 +10,11 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - uses: actions/checkout@v2
+            - name: Install Rust
+              uses: dtolnay/rust-toolchain@stable
             - name: Compile
               run: cargo build
             - name: Test
-              run: cargo test
\ No newline at end of file
+              run: cargo test
+            - name: Install
+              run: make install
diff --git a/.gitignore b/.gitignore
index 1e7caa9..2f7896d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
-Cargo.lock
 target/
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..dcecec1
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,237 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "anstream"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "824a212faf96e9acacdbd09febd34438f8f711fb84e09a8916013cd7815ca28d"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "940b3a0ca603d1eade50a4846a2afffd5ef57a9feac2c0e2ec2e14f9ead76000"
+
+[[package]]
+name = "anstyle-parse"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52ce7f38b242319f7cabaa6813055467063ecdc9d355bbb4ce0c68908cd8130e"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
+dependencies = [
+ "anstyle",
+ "once_cell_polyfill",
+ "windows-sys",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.104"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "330a5ed07fa54e4702c9d6c4174f74427fc0ef6e214bbd677ae50a5099946470"
+
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
+[[package]]
+name = "clap"
+version = "4.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa8876b300ab35ba921adea3dfd70157a46249b33f95c9084ae5709785478946"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0797fb7aeb1406c84efac526901f7ec3ead2124f946b494e72879d4b54704d"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9c751b79415d4e559e3d1fcf128e09e720eb673a06d26cf6f392d37d75b66e0"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c133bc6a41be0d194c306b5506d15e6feeea7b1d6604bd3f8310dfb2ca96486"
+
+[[package]]
+name = "colorchoice"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
+
+[[package]]
+name = "crc"
+version = "3.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5eb8a2a1cd12ab0d987a5d5e825195d372001a4094a0376319d5a0ad71c1ba0d"
+dependencies = [
+ "crc-catalog",
+]
+
+[[package]]
+name = "crc-catalog"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "217698eaf96b4a3f0bc4f3662aaa55bdf913cd54d7204591faa790070c6d0853"
+
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
+[[package]]
+name = "is_terminal_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
+
+[[package]]
+name = "once_cell_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.107"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "985e7ec9bb745e6ce6535b544d84d6cd6f7ad8bd711c398938ae983b91a766d9"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fbf4db142a473a8d80c26bbf18454ed458bf8d26c8219c331daecfdbd079001"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
+[[package]]
+name = "syn"
+version = "3.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d78c8dee4c7bf0e14673097256fed6142ce9d3b85a408189d07482442145823b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "thiserror"
+version = "2.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09e52cb86a36cede5cb101bf8908837b3e4c6e5e59fe7fd85c23fb56200d189e"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe5197923287db20a58125f0bc85c062f7f2c892de97b18c356f9efb14b28524"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2c754d6c33795a1c324727428e5a7dedb5b06195f9890bdbcba760d3e246563"
+
+[[package]]
+name = "utf8parse"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
+
+[[package]]
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
+
+[[package]]
+name = "windows-sys"
+version = "0.61.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
+dependencies = [
+ "windows-link",
+]
+
+[[package]]
+name = "writeboost-cli"
+version = "2.0.0"
+dependencies = [
+ "anyhow",
+ "byteorder",
+ "clap",
+ "crc",
+ "thiserror",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 668303b..494696f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,5 @@
 [workspace]
-resolver = "2"
+resolver = "3"
 members = [
-    "wbtools",
     "writeboost-cli"
-]
\ No newline at end of file
+]
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..514d78f
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,17 @@
+CARGO ?= cargo
+PREFIX ?= /usr/local
+DESTDIR ?=
+SUDO ?= sudo
+
+.PHONY: all install
+
+all:
+	$(CARGO) build --release --locked
+
+install:
+	@set -eu; \
+	stage=$$(mktemp -d); \
+	trap 'rm -rf -- "$$stage"' EXIT; \
+	trap 'exit 1' HUP INT TERM; \
+	$(CARGO) install --locked --path writeboost-cli --bin writeboost-cli --root "$$stage"; \
+	$(SUDO) install -D -m 755 -- "$$stage/bin/writeboost-cli" "$(DESTDIR)$(PREFIX)/bin/writeboost-cli"
diff --git a/wbtools/Cargo.toml b/wbtools/Cargo.toml
deleted file mode 100644
index c3058d8..0000000
--- a/wbtools/Cargo.toml
+++ /dev/null
@@ -1,38 +0,0 @@
-[package]
-name = "wbtools"
-version = "1.1.0"
-authors = ["Akira Hayakawa <ruby.wktk@gmail.com>"]
-
-[dependencies]
-crc = "3"
-byteorder = "1"
-clap = { version = "4", features = ["derive"] }
-anyhow = "1"
-
-[[bin]]
-name = "wbcheck"
-path = "src/wbcheck.rs"
-
-[[bin]]
-name = "wbcreate"
-path = "src/wbcreate.rs"
-
-[[bin]]
-name = "wbdump"
-path = "src/wbdump.rs"
-
-[[bin]]
-name = "wbmeta"
-path = "src/wbmeta.rs"
-
-[[bin]]
-name = "wbremove"
-path = "src/wbremove.rs"
-
-[[bin]]
-name = "wbstatus"
-path = "src/wbstatus.rs"
-
-[lib]
-name = "lib"
-path = "src/lib.rs"
diff --git a/wbtools/data/sample.cache.226 b/wbtools/data/sample.cache.226
deleted file mode 100644
index 00e4a58..0000000
Binary files a/wbtools/data/sample.cache.226 and /dev/null differ
diff --git a/wbtools/data/sample.status.226 b/wbtools/data/sample.status.226
deleted file mode 100644
index fd41ea7..0000000
--- a/wbtools/data/sample.status.226
+++ /dev/null
@@ -1 +0,0 @@
-0 204800 writeboost 2 762 6 73 73 67 391 12 224 0 0 15 9 1 0 15 6567 0 0 1 0 15 0 11 10 writeback_threshold 0 nr_cur_batched_writeback 1 sync_data_interval 0 update_sb_record_interval 0 read_cache_threshold 0
diff --git a/wbtools/data/sample.table.226 b/wbtools/data/sample.table.226
deleted file mode 100644
index 262516c..0000000
--- a/wbtools/data/sample.table.226
+++ /dev/null
@@ -1 +0,0 @@
-0 204800 writeboost  251:0 251:3
diff --git a/wbtools/data/sys_dev.0 b/wbtools/data/sys_dev.0
deleted file mode 100644
index cb196e4..0000000
--- a/wbtools/data/sys_dev.0
+++ /dev/null
@@ -1,5 +0,0 @@
-MAJOR=252
-MINOR=1
-DEVNAME=vda1
-DEVTYPE=partition
-PARTN=1
diff --git a/wbtools/src/lib.rs b/wbtools/src/lib.rs
deleted file mode 100644
index de67f83..0000000
--- a/wbtools/src/lib.rs
+++ /dev/null
@@ -1,239 +0,0 @@
-extern crate byteorder;
-
-use byteorder::{LittleEndian, ReadBytesExt};
-use std::collections::HashMap;
-use std::fs::File;
-use std::io::Cursor;
-use std::io::Read;
-use std::io::Seek;
-use std::io::SeekFrom;
-use std::process::Command;
-
-pub static VERSION: &'static str = "1.0.1";
-pub static AUTHOR: &'static str = "Akira Hayakawa <ruby.wktk@gmail.com>";
-
-pub struct BlockDevice {
-    name: String,
-}
-
-impl BlockDevice {
-    pub fn new(name_: String) -> Self {
-        BlockDevice { name: name_ }
-    }
-    pub fn name(&self) -> String {
-        self.name.to_owned()
-    }
-    pub fn size(&self) -> i64 {
-        use std::str::FromStr;
-        let output: Vec<u8> = Command::new("blockdev")
-            .arg("--getsz")
-            .arg(&self.name())
-            .output()
-            .expect(&format!("Failed to get the size of {}", self.name()))
-            .stdout;
-        let output = String::from_utf8(output)
-            .expect("Invalid utf8 output")
-            .to_string();
-        let output = output.trim_end();
-        i64::from_str(output).expect("Couldn't parse as i64")
-    }
-}
-
-pub struct CacheDevice {
-    pub dev: BlockDevice,
-}
-
-impl CacheDevice {
-    pub fn new(name: String) -> Self {
-        CacheDevice {
-            dev: BlockDevice::new(name),
-        }
-    }
-    fn nr_segments(&self) -> i32 {
-        ((self.dev.size() - (1 << 11)) / (1 << 10)) as i32
-    }
-    pub fn calc_segment_start(&self, id: i32) -> i32 {
-        let idx = (id - 1) % self.nr_segments();
-        (1 << 11) + (idx * (1 << 10))
-    }
-}
-
-pub struct SegmentHeader {
-    pub id: u64,
-    pub checksum: u32,
-    pub length: u8,
-}
-
-impl SegmentHeader {
-    pub fn from_buf(data: &[u8]) -> SegmentHeader {
-        let mut rdr = Cursor::new(data);
-        let id_ = rdr.read_u64::<LittleEndian>().unwrap();
-        let checksum_ = rdr.read_u32::<LittleEndian>().unwrap();
-        let length_ = rdr.read_u8().unwrap();
-        SegmentHeader {
-            id: id_,
-            checksum: checksum_,
-            length: length_,
-        }
-    }
-    pub fn uninitialized(&self) -> bool {
-        self.id == 0
-    }
-}
-
-pub struct Metablock {
-    pub sector: u64,
-    pub dirty_bits: u8,
-}
-
-pub struct Segment {}
-
-impl Segment {
-    pub fn from_buf(buf: &[u8]) -> (SegmentHeader, Vec<Metablock>) {
-        let seg = SegmentHeader::from_buf(buf);
-
-        let mut metablocks = Vec::new();
-        let mut rdr = Cursor::new(buf);
-        rdr.seek(SeekFrom::Start(512)).unwrap();
-        for _ in 0..seg.length {
-            let sector_ = rdr.read_u64::<LittleEndian>().unwrap();
-            let dirty_bits_ = rdr.read_u8().unwrap();
-            let metablock = Metablock {
-                sector: sector_,
-                dirty_bits: dirty_bits_,
-            };
-            metablocks.push(metablock);
-            let padding = 16 - (8 + 1);
-            rdr.seek(SeekFrom::Current(padding)).unwrap();
-        }
-        (seg, metablocks)
-    }
-}
-
-pub struct SuperBlockHeader {
-    pub magic: u32,
-}
-
-impl SuperBlockHeader {
-    pub fn from_buf(data: &[u8]) -> SuperBlockHeader {
-        let mut rdr = Cursor::new(data);
-        let magic_ = rdr.read_u32::<LittleEndian>().unwrap();
-        SuperBlockHeader { magic: magic_ }
-    }
-}
-
-pub struct SuperBlockRecord {
-    pub last_writeback_segment_id: u64,
-}
-
-impl SuperBlockRecord {
-    pub fn from_buf(data: &[u8]) -> SuperBlockRecord {
-        let mut rdr = Cursor::new(data);
-        let last_writeback_segment_id_ = rdr.read_u64::<LittleEndian>().unwrap();
-        SuperBlockRecord {
-            last_writeback_segment_id: last_writeback_segment_id_,
-        }
-    }
-}
-
-#[derive(Debug)]
-pub struct SysDevTable {
-    map: HashMap<String, String>,
-}
-
-impl SysDevTable {
-    pub fn from_file(path: &str) -> SysDevTable {
-        let mut f = File::open(path).unwrap();
-        let mut s = String::new();
-        f.read_to_string(&mut s).unwrap();
-        let it = s.lines().map(|line| {
-            let v: Vec<&str> = line.split("=").collect();
-            (v[0].to_string(), v[1].to_string())
-        });
-        let mut m = HashMap::new();
-        for (k, v) in it {
-            m.insert(k, v);
-        }
-        SysDevTable { map: m }
-    }
-    pub fn get(&self, name: &str) -> String {
-        self.map[name].to_string()
-    }
-}
-
-#[test]
-fn test_read_sys_dev_file() {
-    let t = SysDevTable::from_file("data/sys_dev.0");
-    assert_eq!(t.get("DEVNAME"), "vda1");
-}
-
-pub struct BlockNumber {
-    value: String,
-}
-
-impl BlockNumber {
-    pub fn unwrap(&self) -> String {
-        self.value.to_owned()
-    }
-    pub fn sys_dev_table(&self) -> SysDevTable {
-        let path = format!("/sys/dev/block/{}/uevent", self.value);
-        SysDevTable::from_file(&path)
-    }
-}
-
-pub struct DMTable {
-    pub backing_dev: BlockNumber,
-    pub cache_dev: BlockNumber,
-}
-
-impl DMTable {
-    pub fn parse(line: String) -> DMTable {
-        let line: Vec<String> = line
-            .split(" ")
-            .filter(|x| x != &"")
-            .map(|x| x.to_string())
-            .collect();
-        DMTable {
-            backing_dev: BlockNumber {
-                value: line[3].clone(),
-            },
-            cache_dev: BlockNumber {
-                value: line[4].clone(),
-            },
-        }
-    }
-}
-
-#[test]
-fn test_dmtable_parse() {
-    let mut s = String::new();
-    let mut f = File::open("data/sample.table.226").unwrap();
-    f.read_to_string(&mut s).unwrap();
-    let t = DMTable::parse(s.trim().to_string());
-    println!("{}", s.clone());
-    assert_eq!(t.backing_dev.unwrap(), "251:0");
-    assert_eq!(t.cache_dev.unwrap(), "251:3");
-}
-
-pub struct WBDev {
-    name: String,
-}
-
-impl WBDev {
-    pub fn new(name_: String) -> WBDev {
-        WBDev { name: name_ }
-    }
-    pub fn table(&self) -> DMTable {
-        let output = Command::new("dmsetup")
-            .arg("table")
-            .arg(&self.name)
-            .output()
-            .expect("Fail to dmsetup table")
-            .stdout;
-        let output = String::from_utf8(output)
-            .expect("Invalid utf8 output")
-            .to_string();
-        let output = output.trim().to_string();
-        DMTable::parse(output)
-    }
-}
diff --git a/wbtools/src/wbcheck.rs b/wbtools/src/wbcheck.rs
deleted file mode 100644
index 6adc41b..0000000
--- a/wbtools/src/wbcheck.rs
+++ /dev/null
@@ -1,68 +0,0 @@
-extern crate clap;
-extern crate crc;
-
-use std::fs::File;
-use std::io::Read;
-use std::io::Seek;
-use std::io::SeekFrom;
-
-use crc::{Crc, CRC_32_ISCSI};
-pub const CASTAGNOLI: Crc<u32> = Crc::<u32>::new(&CRC_32_ISCSI);
-fn checksum(data: &[u8]) -> u32 {
-    CASTAGNOLI.checksum(data)
-}
-
-use clap::Parser;
-#[derive(Parser)]
-#[command(name = "wbcheck")]
-#[command(about = "Check if the segment is broken")]
-#[command(author, version)]
-struct Args {
-    #[arg(help = "Path to the cache device")]
-    cachedev: String,
-    #[arg(help = "Segment id")]
-    segid: i32,
-}
-
-#[test]
-fn test_checksum() {
-    let buf = vec![0; 4096 - 512];
-    assert_eq!(checksum(&buf), 143703573);
-}
-
-fn main() {
-    let args = Args::parse();
-
-    let devname: String = args.cachedev;
-    let id = args.segid;
-    let cache_dev = lib::CacheDevice::new(devname.to_owned());
-
-    let mut f = File::open(&devname).expect(&format!("Device {} not found", &devname));
-
-    let start_byte: u64 = (cache_dev.calc_segment_start(id) as u64) << 9;
-    f.seek(SeekFrom::Start(start_byte)).unwrap();
-
-    let header = {
-        let mut buf = vec![0; 512];
-        f.read(&mut buf).unwrap();
-        lib::SegmentHeader::from_buf(&buf)
-    };
-
-    if header.uninitialized() {
-        std::process::exit(0);
-    }
-
-    let computed = {
-        let size: usize = (4096 - 512) + ((header.length as usize) << 12);
-        let mut buf = vec![0; size];
-        f.read(&mut buf).unwrap();
-        checksum(&buf)
-    };
-
-    if computed != header.checksum {
-        panic!(
-            "Checksum is broken. computed={}, expected={}",
-            computed, header.checksum
-        );
-    }
-}
diff --git a/wbtools/src/wbcreate.rs b/wbtools/src/wbcreate.rs
deleted file mode 100644
index 9450071..0000000
--- a/wbtools/src/wbcreate.rs
+++ /dev/null
@@ -1,108 +0,0 @@
-extern crate clap;
-
-use std::process::Command;
-
-use clap::Parser;
-#[derive(Parser)]
-#[command(name = "wbcreate")]
-#[command(about = "Create a writeboost device")]
-#[command(author, version)]
-#[clap(rename_all = "snake_case")]
-struct Args {
-    #[arg(help = "Name of the writeboost device")]
-    lvname: String,
-    #[arg(help = "Path to the backing device")]
-    backingdev: String,
-    #[arg(help = "Path to the cache device")]
-    cachedev: String,
-    #[arg(
-        help = "Reformat the cache device. This cleans up all existing cache blocks",
-        long
-    )]
-    reformat: bool,
-    #[arg(long)]
-    write_around_mode: bool,
-    #[arg(long, value_name = "INT")]
-    writeback_threshold: Option<u32>,
-    #[arg(long, value_name = "INT")]
-    nr_max_batched_writeback: Option<u32>,
-    #[arg(long, value_name = "INT")]
-    update_sb_record_interval: Option<u32>,
-    #[arg(long, value_name = "INT")]
-    sync_data_interval: Option<u32>,
-    #[arg(long, value_name = "INT")]
-    read_cache_threshold: Option<u32>,
-}
-
-fn main() {
-    let args = Args::parse();
-
-    let wbname = args.lvname;
-    let backing_dev = {
-        let name = args.backingdev;
-        lib::BlockDevice::new(name)
-    };
-    let cache_dev_name = args.cachedev;
-
-    if args.reformat {
-        let status = Command::new("dd")
-            .arg("if=/dev/zero")
-            .arg(format!("of={}", cache_dev_name))
-            .arg("bs=512")
-            .arg("count=1")
-            .status()
-            .expect("Failed to zero out the cache device");
-        assert!(status.success());
-    }
-
-    let mut optionals: Vec<String> = Vec::new();
-    if args.write_around_mode {
-        optionals.push("write_around_mode".to_string());
-        optionals.push("1".to_string());
-    }
-    if let Some(v) = args.writeback_threshold {
-        optionals.push("writeback_threshold".to_string());
-        optionals.push(v.to_string());
-    }
-    if let Some(v) = args.nr_max_batched_writeback {
-        optionals.push("nr_max_batched_writeback".to_string());
-        optionals.push(v.to_string());
-    }
-    if let Some(v) = args.update_sb_record_interval {
-        optionals.push("update_sb_record_interval".to_string());
-        optionals.push(v.to_string());
-    }
-    if let Some(v) = args.sync_data_interval {
-        optionals.push("sync_data_interval".to_string());
-        optionals.push(v.to_string());
-    }
-    if let Some(v) = args.read_cache_threshold {
-        optionals.push("read_cache_threshold".to_string());
-        optionals.push(v.to_string());
-    }
-
-    let n = optionals.len();
-
-    let optionals_table = if n == 0 {
-        "".to_string()
-    } else {
-        format!(" {} {}", n, optionals.join(" "))
-    };
-
-    let table = format!(
-        "0 {} writeboost {} {}{}",
-        backing_dev.size(),
-        backing_dev.name(),
-        cache_dev_name,
-        optionals_table
-    );
-
-    let status = Command::new("dmsetup")
-        .arg("create")
-        .arg(wbname)
-        .arg("--table")
-        .arg(table)
-        .status()
-        .expect("Failed to execute dmsetup create");
-    assert!(status.success());
-}
diff --git a/wbtools/src/wbdump.rs b/wbtools/src/wbdump.rs
deleted file mode 100644
index ad339ed..0000000
--- a/wbtools/src/wbdump.rs
+++ /dev/null
@@ -1,49 +0,0 @@
-extern crate clap;
-
-use std::str::FromStr;
-
-use clap::Parser;
-#[derive(Parser)]
-#[command(name = "wbdump")]
-#[command(about = "Dump a cache block")]
-#[command(author, version)]
-struct Args {
-    #[arg(help = "Path to the cache device")]
-    cachedev: String,
-    #[arg(help = "Metablock index")]
-    mbidx: i32,
-    #[arg(long, help = "MBIDX is relative to this SEGID (default is 1)")]
-    #[arg(default_value_t = 1)]
-    segid: i32,
-}
-
-fn main() {
-    let args = Args::parse();
-
-    let mb_idx: i32 = args.mbidx;
-    let cache_dev = {
-        let devname = args.cachedev;
-        lib::CacheDevice::new(devname.to_owned())
-    };
-
-    let mut base_id = args.segid;
-
-    base_id += mb_idx / 127;
-    let idx_inseg = mb_idx % 127;
-    let start_byte = (cache_dev.calc_segment_start(base_id) << 9) + ((1 + idx_inseg) << 12);
-
-    use std::process::Command;
-    let output = Command::new("od")
-        .arg(format!("-j{}", start_byte))
-        .arg("-N4096")
-        .arg("-Ax")
-        .arg(&cache_dev.dev.name())
-        .output()
-        .expect("failed to execute od")
-        .stdout;
-    let output = String::from_utf8(output)
-        .expect("invalid utf8 output")
-        .to_string();
-    let output = output.trim();
-    println!("{}", output);
-}
diff --git a/wbtools/src/wbmeta.rs b/wbtools/src/wbmeta.rs
deleted file mode 100644
index b3709b9..0000000
--- a/wbtools/src/wbmeta.rs
+++ /dev/null
@@ -1,74 +0,0 @@
-extern crate clap;
-
-use std::fs::File;
-use std::io::Read;
-use std::io::Seek;
-use std::io::SeekFrom;
-
-use clap::Parser;
-#[derive(Parser)]
-#[command(name = "wbmeta")]
-#[command(about = "Dump a segment header")]
-#[command(author, version)]
-struct Args {
-    #[arg(help = "Path to the cache device")]
-    cachedev: String,
-    #[arg(help = "Segment id. 0 means the superblock")]
-    segid: i32,
-}
-
-fn main() {
-    let args = Args::parse();
-
-    let devname: String = args.cachedev;
-    let id: i32 = args.segid;
-
-    let cache_dev = lib::CacheDevice::new(devname.to_owned());
-
-    if id == 0 {
-        // superblock
-        let mut buf = [0; 512];
-        let mut f = File::open(&devname).unwrap();
-        f.read(&mut buf).unwrap();
-        let sup_header = lib::SuperBlockHeader::from_buf(&buf);
-
-        let s = if sup_header.magic == 0x57427374 {
-            "formatted"
-        } else {
-            "unformatted"
-        };
-
-        println!("[superblock header]");
-        println!("magic = {} ({})", sup_header.magic, s);
-
-        f.seek(SeekFrom::Start((1u64 << 20) - 512)).unwrap();
-        f.read(&mut buf).unwrap();
-        let sup_record = lib::SuperBlockRecord::from_buf(&buf);
-
-        println!("[superblock record]");
-        println!(
-            "last writeback id = {}",
-            sup_record.last_writeback_segment_id
-        );
-    } else {
-        // header
-        let mut buf = [0; 4096];
-        let mut f = File::open(&devname).unwrap();
-        let start_byte: u64 = (cache_dev.calc_segment_start(id) as u64) << 9;
-        f.seek(SeekFrom::Start(start_byte)).unwrap();
-        f.read(&mut buf).unwrap();
-        let (header, metablocks) = lib::Segment::from_buf(&buf);
-
-        println!("[segment header]");
-        println!("id        = {}", header.id);
-        println!("checksumx = {}", header.checksum);
-        println!("length    = {}", header.length);
-
-        for (i, metablock) in metablocks.iter().enumerate() {
-            println!(
-                "[{}] sector={}, dirty_bits={}",
-                i, metablock.sector, metablock.dirty_bits
-            );
-        }
-    }
-}
diff --git a/wbtools/src/wbremove.rs b/wbtools/src/wbremove.rs
deleted file mode 100644
index 07c7eb3..0000000
--- a/wbtools/src/wbremove.rs
+++ /dev/null
@@ -1,79 +0,0 @@
-extern crate clap;
-
-use clap::Parser;
-use std::process::Command;
-
-#[derive(Parser)]
-#[command(name = "wbremove")]
-#[command(about = "Remove a writeboost device")]
-#[command(author, version)]
-struct Args {
-    #[arg(help = "Name of the writeboost device")]
-    lvname: String,
-    #[arg(long, help = "Don't flush RAM buffer to cache device before removing")]
-    noflush: bool,
-    #[arg(
-        long,
-        help = "Don't write back dirty caches to the backing device before removing"
-    )]
-    nowriteback: bool,
-}
-
-fn main() {
-    let args = Args::parse();
-
-    let wbname = args.lvname;
-
-    let do_flush = !args.noflush;
-    if do_flush {
-        let status = Command::new("dmsetup")
-            .arg("suspend")
-            .arg(&wbname)
-            .status()
-            .expect("Failed to flush transient data");
-        assert!(status.success());
-
-        let status = Command::new("dmsetup")
-            .arg("resume")
-            .arg(&wbname)
-            .status()
-            .expect("Failed to flush transient data");
-        assert!(status.success());
-    }
-
-    let do_writeback = !args.nowriteback;
-    if do_writeback {
-        let status = Command::new("dmsetup")
-            .arg("message")
-            .arg(&wbname)
-            .arg("0")
-            .arg("drop_caches")
-            .status()
-            .expect("Failed to drop caches");
-        assert!(status.success());
-    }
-
-    let cache_dev_name = lib::WBDev::new(wbname.to_string())
-        .table()
-        .cache_dev
-        .sys_dev_table()
-        .get("DEVNAME");
-
-    let status = Command::new("dmsetup")
-        .arg("remove")
-        .arg(&wbname)
-        .status()
-        .expect("Failed to execute dmsetup remove");
-    assert!(status.success());
-
-    if do_writeback {
-        let status = Command::new("dd")
-            .arg("if=/dev/zero")
-            .arg(format!("of=/dev/{}", cache_dev_name))
-            .arg("bs=512")
-            .arg("count=1")
-            .status()
-            .expect("Failed to zero out the cache device");
-        assert!(status.success());
-    }
-}
diff --git a/wbtools/src/wbstatus.rs b/wbtools/src/wbstatus.rs
deleted file mode 100644
index 822b1a6..0000000
--- a/wbtools/src/wbstatus.rs
+++ /dev/null
@@ -1,63 +0,0 @@
-extern crate clap;
-
-use std::io::{self, Read};
-
-fn print_status(s: &str) {
-    let toks: Vec<&str> = { s.split_whitespace().collect() };
-
-    println!("cursor pos              = {}", toks[3]);
-    println!("# of cache blocks       = {}", toks[4]);
-    println!("# of segments           = {}", toks[5]);
-    println!("current id              = {}", toks[6]);
-    println!("last flushed id         = {}", toks[7]);
-    println!("last writeback id       = {}", toks[8]);
-    println!("# of dirty cache blocks = {}", toks[9]);
-    println!("# of partial flushes    = {}", toks[26]);
-
-    println!("write? hit? on_buffer? fullsize?");
-    for i in 0..16 {
-        let b = |bit: usize| {
-            if (i & (1 << bit)) > 0 {
-                1
-            } else {
-                0
-            }
-        };
-        let v = toks[10 + i];
-        println!(
-            "{}      {}    {}          {}         {}",
-            b(3),
-            b(2),
-            b(1),
-            b(0),
-            v
-        );
-    }
-}
-
-#[test]
-fn test_print_status() {
-    let mut buf = String::new();
-    let mut f = std::fs::File::open("data/sample.status.226").unwrap();
-    f.read_to_string(&mut buf).unwrap();
-    print_status(&buf);
-}
-
-use clap::Parser;
-#[derive(Parser)]
-#[command(name = "wbstatus")]
-#[command(about = "Pretty-print the dmsetup status output")]
-#[command(override_usage = "dmsetup status wbdev | wbstatus")]
-#[command(author, version)]
-struct Args;
-
-fn main() -> anyhow::Result<()> {
-    let _ = Args::parse();
-
-    let mut buf = String::new();
-    io::stdin().read_to_string(&mut buf)?;
-
-    print_status(&buf);
-
-    Ok(())
-}