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Check for and report db corruption before attempting repair #2304

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Jul 27, 2023
Merged

Check for and report db corruption before attempting repair #2304

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16 changes: 15 additions & 1 deletion src/index.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ use {
TableDefinition, WriteTransaction,
},
std::collections::HashMap,
std::io::{BufWriter, Write},
std::io::{BufWriter, Read, Write},
std::sync::atomic::{self, AtomicBool},
};

Expand Down Expand Up @@ -169,6 +169,20 @@ impl Index {
}
};

if let Ok(mut file) = fs::OpenOptions::new().read(true).open(&path) {
// use cberner's quick hack to check the redb recovery bit
// https://github.com/cberner/redb/issues/639#issuecomment-1628037591
const MAGICNUMBER: [u8; 9] = [b'r', b'e', b'd', b'b', 0x1A, 0x0A, 0xA9, 0x0D, 0x0A];
const RECOVERY_REQUIRED: u8 = 2;

let mut buffer = [0; MAGICNUMBER.len() + 1];
file.read_exact(&mut buffer).unwrap();

if buffer[MAGICNUMBER.len()] & RECOVERY_REQUIRED != 0 {
println!("Index file {:?} needs recovery. This can take a long time, especially for the --index-sats index.", path);
}
}

log::info!("Setting DB cache size to {} bytes", db_cache_size);

let database = match Database::builder()
Expand Down