69 lines
1.9 KiB
Rust
69 lines
1.9 KiB
Rust
use anyhow::Result;
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use std::path::Path;
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use std::sync::Arc;
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use crate::era::dump::*;
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use crate::era::restore::*;
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use crate::era::superblock::*;
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use crate::io_engine::*;
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use crate::pdata::space_map_metadata::*;
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use crate::report::*;
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use crate::write_batcher::*;
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//------------------------------------------
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pub struct EraRepairOptions<'a> {
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pub input: &'a Path,
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pub output: &'a Path,
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pub async_io: bool,
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pub report: Arc<Report>,
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}
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struct Context {
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_report: Arc<Report>,
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engine_in: Arc<dyn IoEngine + Send + Sync>,
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engine_out: Arc<dyn IoEngine + Send + Sync>,
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}
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const MAX_CONCURRENT_IO: u32 = 1024;
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fn new_context(opts: &EraRepairOptions) -> Result<Context> {
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let engine_in: Arc<dyn IoEngine + Send + Sync>;
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let engine_out: Arc<dyn IoEngine + Send + Sync>;
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if opts.async_io {
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engine_in = Arc::new(AsyncIoEngine::new(opts.input, MAX_CONCURRENT_IO, false)?);
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engine_out = Arc::new(AsyncIoEngine::new(opts.output, MAX_CONCURRENT_IO, true)?);
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} else {
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let nr_threads = std::cmp::max(8, num_cpus::get() * 2);
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engine_in = Arc::new(SyncIoEngine::new(opts.input, nr_threads, false)?);
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engine_out = Arc::new(SyncIoEngine::new(opts.output, nr_threads, true)?);
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}
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Ok(Context {
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_report: opts.report.clone(),
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engine_in,
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engine_out,
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})
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}
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//------------------------------------------
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pub fn repair(opts: EraRepairOptions) -> Result<()> {
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let ctx = new_context(&opts)?;
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let sb = read_superblock(ctx.engine_in.as_ref(), SUPERBLOCK_LOCATION)?;
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let sm = core_metadata_sm(ctx.engine_out.get_nr_blocks(), u32::MAX);
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let mut w = WriteBatcher::new(
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ctx.engine_out.clone(),
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sm.clone(),
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ctx.engine_out.get_batch_size(),
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);
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let mut restorer = Restorer::new(&mut w);
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dump_metadata(ctx.engine_in, &mut restorer, &sb, true)
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}
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//------------------------------------------
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