From faf27bc2ca5bd642a40fd3eb83081d4d09474334 Mon Sep 17 00:00:00 2001 From: Akira Hayakawa Date: Fri, 2 Jan 2026 12:49:55 +0900 Subject: [PATCH 1/6] check: Detect seg-id mismatch --- writeboost-cli/src/sub/check/mod.rs | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/writeboost-cli/src/sub/check/mod.rs b/writeboost-cli/src/sub/check/mod.rs index 13c68ce..0bb59cf 100644 --- a/writeboost-cli/src/sub/check/mod.rs +++ b/writeboost-cli/src/sub/check/mod.rs @@ -23,6 +23,8 @@ enum CheckError { computed_checksum: u32, expected_checksum: u32, }, + #[error("segment id is not matched. expected={expected_id}, actual={actual_id}")] + SegmentIdMismatch { expected_id: u64, actual_id: u64 }, } fn do_check(devname: &str, seg_id: i32) -> Result<(), CheckError> { @@ -43,6 +45,13 @@ fn do_check(devname: &str, seg_id: i32) -> Result<(), CheckError> { return Err(CheckError::NotInitialized); } + if header.id != seg_id as u64 { + return Err(CheckError::SegmentIdMismatch { + expected_id: seg_id as u64, + actual_id: header.id, + }); + } + let computed = { let size: usize = (4096 - 512) + ((header.length as usize) << 12); let mut buf = vec![0; size]; From 70e63601cfb3f52e0959523ba4e9693b6542b3c0 Mon Sep 17 00:00:00 2001 From: Akira Hayakawa Date: Fri, 2 Jan 2026 13:15:39 +0900 Subject: [PATCH 2/6] seg-id as u64 --- writeboost-cli/src/sub/check/mod.rs | 6 +++--- writeboost-cli/src/sub/dump/mod.rs | 8 ++++---- writeboost-cli/src/sub/meta/mod.rs | 4 ++-- writeboost-cli/src/utils.rs | 14 +++++++------- 4 files changed, 16 insertions(+), 16 deletions(-) diff --git a/writeboost-cli/src/sub/check/mod.rs b/writeboost-cli/src/sub/check/mod.rs index 0bb59cf..5214f02 100644 --- a/writeboost-cli/src/sub/check/mod.rs +++ b/writeboost-cli/src/sub/check/mod.rs @@ -19,7 +19,7 @@ enum CheckError { "segment {seg_id} is broken. checksum: computed={computed_checksum}, expected={expected_checksum}" )] CacheBlockBroken { - seg_id: i32, + seg_id: u64, computed_checksum: u32, expected_checksum: u32, }, @@ -27,7 +27,7 @@ enum CheckError { SegmentIdMismatch { expected_id: u64, actual_id: u64 }, } -fn do_check(devname: &str, seg_id: i32) -> Result<(), CheckError> { +fn do_check(devname: &str, seg_id: u64) -> Result<(), CheckError> { let cache_dev = CacheDevice::new(devname.to_owned()); let mut f = File::open(&devname).expect(&format!("Device {} not found", &devname)); @@ -103,7 +103,7 @@ pub struct CommandArgs { #[arg(help = "Path to the cache device")] cachedev: String, #[arg(help = "Segment id")] - segid: i32, + segid: u64, } pub fn run(args: CommandArgs) { diff --git a/writeboost-cli/src/sub/dump/mod.rs b/writeboost-cli/src/sub/dump/mod.rs index 6ef03d0..60baa98 100644 --- a/writeboost-cli/src/sub/dump/mod.rs +++ b/writeboost-cli/src/sub/dump/mod.rs @@ -7,14 +7,14 @@ pub struct CommandArgs { #[arg(help = "Path to the cache device")] cachedev: String, #[arg(help = "Metablock index")] - mbidx: i32, + mbidx: u32, #[arg(long, help = "MBIDX is relative to this SEGID (default is 1)")] #[arg(default_value_t = 1)] - segid: i32, + segid: u64, } pub fn run(args: CommandArgs) { - let mb_idx: i32 = args.mbidx; + let mb_idx: u32 = args.mbidx; let cache_dev = { let devname = args.cachedev; CacheDevice::new(devname.to_owned()) @@ -22,7 +22,7 @@ pub fn run(args: CommandArgs) { let mut base_id = args.segid; - base_id += mb_idx / 127; + base_id += mb_idx as u64 / 127; let idx_inseg = mb_idx % 127; let start_byte = (cache_dev.calc_segment_start(base_id) << 9) + ((1 + idx_inseg) << 12); diff --git a/writeboost-cli/src/sub/meta/mod.rs b/writeboost-cli/src/sub/meta/mod.rs index daa319a..616b673 100644 --- a/writeboost-cli/src/sub/meta/mod.rs +++ b/writeboost-cli/src/sub/meta/mod.rs @@ -12,12 +12,12 @@ pub struct CommandArgs { #[arg(help = "Path to the cache device")] cachedev: String, #[arg(help = "Segment id. 0 means the superblock")] - segid: i32, + segid: u64, } pub fn run(args: CommandArgs) { let devname: String = args.cachedev; - let id: i32 = args.segid; + let id = args.segid; let cache_dev = CacheDevice::new(devname.to_owned()); diff --git a/writeboost-cli/src/utils.rs b/writeboost-cli/src/utils.rs index 4f82146..e883d7f 100644 --- a/writeboost-cli/src/utils.rs +++ b/writeboost-cli/src/utils.rs @@ -22,7 +22,7 @@ impl BlockDevice { self.name.to_owned() } - pub fn size(&self) -> i64 { + pub fn size(&self) -> u64 { use std::str::FromStr; let output: Vec = Command::new("blockdev") .arg("--getsz") @@ -34,7 +34,7 @@ impl BlockDevice { .expect("Invalid utf8 output") .to_string(); let output = output.trim_end(); - i64::from_str(output).expect("Couldn't parse as i64") + u64::from_str(output).expect("Couldn't parse as u64") } } @@ -49,13 +49,13 @@ impl CacheDevice { } } - fn nr_segments(&self) -> i32 { - ((self.dev.size() - (1 << 11)) / (1 << 10)) as i32 + fn nr_segments(&self) -> u32 { + ((self.dev.size() - (1 << 11)) / (1 << 10)) as u32 } - pub fn calc_segment_start(&self, id: i32) -> i32 { - let idx = (id - 1) % self.nr_segments(); - (1 << 11) + (idx * (1 << 10)) + pub fn calc_segment_start(&self, id: u64) -> u32 { + let idx = (id - 1) % self.nr_segments() as u64; + (1 << 11) + (idx as u32 * (1 << 10)) } } From 7efee9be2c43db9821655a029db66fb6351f3ce5 Mon Sep 17 00:00:00 2001 From: Akira Hayakawa Date: Fri, 2 Jan 2026 13:58:34 +0900 Subject: [PATCH 3/6] fix test --- writeboost-cli/data/sample.cache.uninit | Bin 0 -> 2097152 bytes writeboost-cli/src/sub/check/mod.rs | 4 ++-- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/writeboost-cli/data/sample.cache.uninit b/writeboost-cli/data/sample.cache.uninit index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..3301331bed0971ef2a52684ad73baa99ed523573 100644 GIT binary patch literal 2097152 zcmeIuF#!Mo0K%a4Pi+hzh(KY$fB^#r3>YwAz<>b*1`HT5V8DO@0|pEjFkrxd0RsjM z7%*VKfB^#r3>YwAz<>b*1`HT5V8DO@0|pEjFkrxd0RsjM7%*VKfB^#r3>YwAz<>b* z1`HT5V8DO@0|pEjFkrxd0RsjM7%*VKfB^#r3>YwAz<>b*1`HT5V8DO@0|pEjFkrxd z0RsjM7%*VKfB^#r3>YwAz<>b*1`HT5V8DO@0|pEjFkrxd0RsjM7%*VKfB^#r3>YwA 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z7%*VKfB^#r3>YwAz<>b*1`HT5V8DO@0|pEjFkrxd0RsjM7%*VKfB^#r3>YwAz<>b* z1`HT5V8DO@0|pEjFkrxd0RsjM7%*VKfB^#r3>YwAz<>b*1`HT5V8DO@0|pEjFkrxd z0RsjM7%*VKfB^#r3>YwAz<>b*1`HT5V8DO@0|pEjFkrxd0RsjM7%*VKfB^#r3>YwA zz<>b*1`HT5V8DO@0|pEjFkrxd0RsjM7%*VKfB^#r3>YwAz<>b*1`HT5V8DO@0|pEj PFkrxd0RsjM82Anh0pI`u literal 0 HcmV?d00001 diff --git a/writeboost-cli/src/sub/check/mod.rs b/writeboost-cli/src/sub/check/mod.rs index 5214f02..ee0e6ad 100644 --- a/writeboost-cli/src/sub/check/mod.rs +++ b/writeboost-cli/src/sub/check/mod.rs @@ -83,7 +83,7 @@ mod tests { #[test] fn test_check() { let devname = "data/sample.cache.226"; - let seg_id = 1; + let seg_id = 73; let res = do_check(&devname, seg_id); assert!(res.is_ok()); } @@ -91,7 +91,7 @@ mod tests { #[test] fn test_uninitialized() { let devname = "data/sample.cache.uninit"; - let seg_id = 0; + let seg_id = 3; let res = do_check(&devname, seg_id); assert!(matches!(res, Err(CheckError::NotInitialized))); } From 761f2d02fd3a901c4622bd5c8afdf07ca493b4f0 Mon Sep 17 00:00:00 2001 From: Akira Hayakawa Date: Fri, 2 Jan 2026 14:06:09 +0900 Subject: [PATCH 4/6] check: Use e in error message --- writeboost-cli/src/sub/check/mod.rs | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/writeboost-cli/src/sub/check/mod.rs b/writeboost-cli/src/sub/check/mod.rs index ee0e6ad..17965db 100644 --- a/writeboost-cli/src/sub/check/mod.rs +++ b/writeboost-cli/src/sub/check/mod.rs @@ -112,10 +112,10 @@ pub fn run(args: CommandArgs) { match do_check(&devname, id) { Ok(()) => {} - Err(CheckError::NotInitialized) => { + Err(e@CheckError::NotInitialized) => { // Since segments are zero-ed out at formatting, // if the segment is all zeros, it is considered still unused. - eprintln!("segment is not initialized"); + eprintln!("{e}"); } Err(e) => { panic!("{e}") From 7f72cd91b8d9f76f8d795d979cb7dba4afba48c5 Mon Sep 17 00:00:00 2001 From: Akira Hayakawa Date: Fri, 2 Jan 2026 14:15:22 +0900 Subject: [PATCH 5/6] Revert checking seg-id --- writeboost-cli/src/sub/check/mod.rs | 9 --------- 1 file changed, 9 deletions(-) diff --git a/writeboost-cli/src/sub/check/mod.rs b/writeboost-cli/src/sub/check/mod.rs index 17965db..b81d580 100644 --- a/writeboost-cli/src/sub/check/mod.rs +++ b/writeboost-cli/src/sub/check/mod.rs @@ -23,8 +23,6 @@ enum CheckError { computed_checksum: u32, expected_checksum: u32, }, - #[error("segment id is not matched. expected={expected_id}, actual={actual_id}")] - SegmentIdMismatch { expected_id: u64, actual_id: u64 }, } fn do_check(devname: &str, seg_id: u64) -> Result<(), CheckError> { @@ -45,13 +43,6 @@ fn do_check(devname: &str, seg_id: u64) -> Result<(), CheckError> { return Err(CheckError::NotInitialized); } - if header.id != seg_id as u64 { - return Err(CheckError::SegmentIdMismatch { - expected_id: seg_id as u64, - actual_id: header.id, - }); - } - let computed = { let size: usize = (4096 - 512) + ((header.length as usize) << 12); let mut buf = vec![0; size]; From ae72cdcbd336753f8909f829de097dfb75178584 Mon Sep 17 00:00:00 2001 From: Akira Hayakawa Date: Fri, 2 Jan 2026 14:15:55 +0900 Subject: [PATCH 6/6] fmt --- writeboost-cli/src/sub/check/mod.rs | 2 +- writeboost-cli/src/sub/meta/mod.rs | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/writeboost-cli/src/sub/check/mod.rs b/writeboost-cli/src/sub/check/mod.rs index b81d580..ff4dd3a 100644 --- a/writeboost-cli/src/sub/check/mod.rs +++ b/writeboost-cli/src/sub/check/mod.rs @@ -103,7 +103,7 @@ pub fn run(args: CommandArgs) { match do_check(&devname, id) { Ok(()) => {} - Err(e@CheckError::NotInitialized) => { + Err(e @ CheckError::NotInitialized) => { // Since segments are zero-ed out at formatting, // if the segment is all zeros, it is considered still unused. eprintln!("{e}"); diff --git a/writeboost-cli/src/sub/meta/mod.rs b/writeboost-cli/src/sub/meta/mod.rs index 616b673..f29f0cf 100644 --- a/writeboost-cli/src/sub/meta/mod.rs +++ b/writeboost-cli/src/sub/meta/mod.rs @@ -56,9 +56,9 @@ pub fn run(args: CommandArgs) { let (header, metablocks) = Segment::from_buf(&buf); println!("[segment header]"); - println!("id = {}", header.id); - println!("checksumx = {}", header.checksum); - println!("length = {}", header.length); + println!("id = {}", header.id); + println!("checksum = {}", header.checksum); + println!("length = {}", header.length); for (i, metablock) in metablocks.iter().enumerate() { println!(