matthew
b79c973c1d
Pre-0.17.12 every Mapfile::record() persisted the full mapfile via tempfile-create + write + atomic-rename. On local LVM that's microseconds; on NFS each rename is multiple RPCs through the unraid user-share fuse layer, dragging a Black Mass UHD rip from ~11 MB/s on local to ~1.5 MB/s on NFS — the mapfile path alone burned multiple seconds of wall time per real-world second of work. Mapfile now batches the rename to once per second: - record() always updates in-memory state and stats; only fires write_to_disk when last_flushed.elapsed() >= FLUSH_INTERVAL (1 s). - New flush() API forces a persist; called by sweep_pipeline's consumer at end-of-sweep and by Disc::patch at end-of-patch, after the file's sync_all. - Drop impl best-effort flushes so an early-return / unwind doesn't silently lose pending state. Crash-safety changes from "lose at most one block" to "lose at most 1 s of recorded progress" — the ISO file's payload bytes are unaffected; only the mapfile's authority over which sectors are already-good is at risk, and a resume re-reads anything Pass 1 had already covered. Measured on the BU40N test bed against Black Mass UHD inner zone: - NFS staging: 1.5 MB/s → 16.48 MB/s (10.9× recovery) - Local LVM staging: 11.09 MB/s → 11.83 MB/s (+6.7 % bonus) Internal round_trip_load test now flushes before reading back from disk. External patch / copy tests are unaffected: patch and sweep_pipeline flush at completion before returning.
45 lines
1.1 KiB
TOML
45 lines
1.1 KiB
TOML
[package]
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name = "libfreemkv"
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version = "0.17.12"
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edition = "2024"
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rust-version = "1.86"
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license = "AGPL-3.0-only"
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description = "Open source raw disc access library for optical drives"
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repository = "https://github.com/freemkv/libfreemkv"
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keywords = ["bluray", "uhd", "optical", "scsi", "disc"]
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categories = ["hardware-support", "multimedia"]
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[dependencies]
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serde = { version = "1", features = ["derive"] }
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serde_json = "1"
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sha1 = "0.10"
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sha2 = "0.10"
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aes = "0.8"
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cbc = "0.1"
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flate2 = "1"
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num-bigint = "0.4"
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num-traits = "0.2"
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num-integer = "0.1"
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rand = "0.8"
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cmac = "0.7"
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zip = { version = "2", default-features = false, features = ["deflate"] }
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base64 = "0.22.1"
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# Trace-level instrumentation for Disc::copy + SgIoTransport::execute. Permitted
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# under CLAUDE.md ("Acceptable strings: debug/trace logging"). Consumers (autorip)
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# wire a tracing subscriber and pipe events into the JSONL debug log.
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tracing = "0.1"
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[target.'cfg(target_os = "linux")'.dependencies]
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libc = "0.2"
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[target.'cfg(target_os = "macos")'.dependencies]
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libc = "0.2"
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[dev-dependencies]
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tempfile = "3"
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[[bench]]
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name = "sgio_read"
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harness = false
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