osobhandClaude Fable 5.1
99b907be04
- HDF5Memory::create/open take an exclusive advisory lock on <store>.h5.lock (std File::try_lock, no new dependency). The store lives in memory and is rewritten wholesale at each checkpoint, so two handles on one store used to silently destroy each other's data; a second writer now gets MemoryError::Locked. The OS drops the lock with the descriptor, so a crash never leaves a stale lock. Acquisition retries for ~250 ms to absorb a previous owner that is mid-teardown; AsyncHDF5Memory::shutdown releases the lock once its writer task has stopped. - HDF5Memory::open_read_only: a lock-free, point-in-time view (checkpoint + current WAL contents, replayed in memory) that never writes — it does not repair, upgrade or move the WAL, and anything that would persist returns an error. The CLI's recall/stats/agents-md/export use it, so a store can be inspected while an agent has it open. Tests that reopened a store purely to verify on-disk state now use it. - open() no longer fails on a WAL that cannot possibly be replayed (torn header, bad magic): it is moved to <store>.h5.wal.corrupt-<ts>, reported via HDF5Memory::quarantined_wal(), and the healthy .h5 opens from its last checkpoint. A well-formed header with an unknown version still fails and is left untouched — most likely a newer build's WAL, which must not be discarded. Co-Authored-By: Claude Fable 5.1 <[email protected]>
clawhdf5-agent
HDF5-backed persistent memory store for on-device AI agents.
Built on clawhdf5, clawhdf5-agent provides a vector-searchable memory backend optimized for edge AI workloads. Store embeddings, text chunks, and metadata in a single HDF5 file with SIMD-accelerated similarity search.
Features
- Persistent vector store in HDF5 format
- Cosine similarity and L2 distance search
- SIMD-accelerated via clawhdf5-accel (AVX2, NEON)
- Optional GPU acceleration via clawhdf5-gpu
- Memory-mapped access for large stores
- f16 storage support for compact embeddings
Usage
[dependencies]
clawhdf5-agent = "2.1.0"
License
MIT