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Time out a stalled auto-push - #4

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PEEKPerformer merged 4 commits into
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fix/push-timeout
Sep 17, 2026
Merged

PEEKPerformer merged 4 commits into
mainfrom
fix/push-timeout

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Stacked on #3 (#1, then #2, then #3). This PR's diff is only its own commit.

What this PR does

Auto-push in ingest.py now runs with a one-hour timeout. On timeout it kills the push's whole process group.

Why

git push ran with no timeout. A push that stalls instead of failing (a connection that stops sending but never resets, a laptop that sleeps mid-push) holds the ingest lock indefinitely. Every later tick then exits with "another ingest is running", and nothing is deposited until someone kills the push by hand.

subprocess.run(timeout=...) would not be enough, because it kills only the direct git child and leaves ssh and pack-objects running. run_with_timeout starts the command in a new session and kills the whole group.

One hour (PUSH_TIMEOUT_SECONDS) covers a --max-pack-gib chunk (default 1.5 GiB) on a slow uplink. A timed-out push is reported like any other push failure, and the next tick with changes retries.

Type of change

  • Bug fix (non-breaking change that fixes a documented or observed defect)
  • New feature (non-breaking change that adds capability)
  • Breaking change (alters existing behavior; requires major-version bump and CHANGELOG entry)
  • Documentation only
  • Performance improvement (no functional change)
  • Internal refactor (no user-visible change)
  • CI / tooling

Non-negotiables check

  • Forensic completeness (no filtering of transcript content)
  • Provenance via hash chain (SHA-256 per session, verifiable with stock Unix tools)
  • Git is the archive substrate
  • Environment capture (host CLI version, OS, holotype version, project-repo git state)
  • Append-only by design
  • No silent network behavior

Selftest

  • python scripts/selftest.py passes locally
  • If this PR adds a feature or fixes a bug, a new selftest assertion exercises the change
  • CI is green (GitHub Actions workflow on this PR)

New assertion: run_with_timeout(["sh", "-c", "sleep 37 & sleep 37"], timeout=1) returns within seconds with a non-zero code and a timeout message, and pgrep finds no leftover sleep 37.

Manifest / archive-format impact

  • No archive-format change
  • manifest_version bumped from N to N+1
  • index_schema_version bumped from N to N+1
  • On-disk archive layout changed (describe migration path)

Documentation

  • CHANGELOG.md updated (under the next-release section, 2.4.1)
  • README.md updated if user-facing behavior changed
  • SKILL.md updated if wizard flow changed
  • docs/ updated as appropriate

Cross-platform impact

  • Verified on macOS
  • Verified on Linux (CI)
  • Verified on Windows (not applicable: start_new_session and killpg are POSIX; no Windows runner configured)
  • CI passes on all configured runners

AI assistance

Fix and draft written by Claude Code. Selftest run locally.

Anything else reviewers should know

Not observed in the incident that prompted #1. This closes the one remaining way a single tick can block all later ticks. repush_chunked.py is interactive and still pushes without a timeout.

git runs `git maintenance run --auto --detach` after every commit.
Once the loose-object count passes gc.auto, each commit starts its own
detached full repack, and nothing stops a second one from starting
while the first is still running. An archive's pack is mostly zstd or
git-crypt blobs, so each repack holds gigabytes. One ingest tick makes
one commit per changed session, which stacked repacks until a 16 GB
Mac with a 7.3 GiB archive ran out of memory and had to be
force-restarted.

Set maintenance.auto=false and gc.auto=0 in the archive's local git
config. init.py sets them after `git init`. ingest.py sets them under
the ingest lock before the first commit, which migrates existing
archives on their next tick. Loose objects now wait for a manual
`git repack -d`.

The selftest checks both the init path and the migration path.
On a real archive 1,832 compressed deposits failed the sweep fsck,
yet every one decompressed to its canonical sha256. The v2.3.0 pure
migration copied sha256_compressed from the prior manifest instead of
hashing the file, so stale values survived, and the fsck compares only
the compressed hash. About 40 false failures per sweep slice buried
any real one.

Hash the file during a pure migration. In the fsck, fall back to the
canonical hash when the compressed one disagrees and count a match as
stale, not failed. Add scripts/repair_compressed_hashes.py to rewrite
the stale values in one commit, touching only that field and only
after the canonical hash matches.
The preferred Claude Code source on the maintainer's machine is a
backup mirror in ~/Documents, which iCloud syncs. iCloud had evicted
3,556 of its 11,311 transcripts to the cloud. The launchd tick may not
download an evicted file, so every read failed with EDEADLK and each
sweep logged dozens of "Resource deadlock avoided" worker failures.

Dedup now prefers a later path whose copy is on disk over an evicted
first path. A deposit whose source is still evicted returns
skipped-offline and leaves the prior deposit in place.
git push ran with no timeout. A push that stalls rather than fails
holds the ingest lock, so every later tick exits early and nothing is
deposited until someone kills it by hand.

Run pushes in their own process group with a one-hour limit and kill
the whole group on timeout, so ssh and pack-objects exit too. A timed
out push is reported like any other push failure.
@PEEKPerformer
PEEKPerformer changed the base branch from fix/icloud-evicted-sources to main September 17, 2026 12:42
@PEEKPerformer
PEEKPerformer merged commit 8925889 into main Sep 17, 2026
@PEEKPerformer
PEEKPerformer deleted the fix/push-timeout branch September 17, 2026 12:44
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