Raven Scott
d286ce19b5
test(protocol): add deterministic MBR failover-key coverage docs(protocol): align package-bare-os-protocol version to 0.9.1 test(booter): add MBR corruption and wrong-topic smoke fixtures test(peer-seed): add strict pre-MBR bare_os.capabilities negotiation check feat(seeder): validate BARE_OS_SEED_REQUIRE_MBR_LABELS feat(seeder): validate BARE_OS_SEED_CAPABILITY_ATTESTATION_JSON schema docs(boot-policy): add requireProtocolPackageMin 0.9.1 example test(kernel): cover boot.policy denySeedRpcMethods behavior test(protocol): add app/cap/chat/meshdrop channel compatibility fixture test(swarm-disk): cover duplicate Protomux channel null-return path test(protocol): add 11-word kernelCapabilityWords round-trip fixture docs(schema): add mbr-layout schema and validate seeder examples test(protocol): add topicKey() golden hash fixture docs(trust): document block-0 trust assumptions in boot docs feat(seeder): add discovery.flushed readiness logging feat(booter): record peer discovery timings in boot-perf.json feat(integration): add local testnet mode to integration lab smoke test(booter): add Hyperswarm connection-budget env regression coverage test(booter): add swarm plus Corestore suspend/resume integration coverage feat(booter): mirror swarm ban events into host audit logs feat(booter): add direct-peer boot via BARE_OS_BOOT_JOIN_PEER_HEX feat(seeder): pass BARE_OS_SEED_MAX_PEERS to Hyperswarm feat(seeder): log drive.version and discoveryKey at startup test(booter): add Hyperdrive.checkout read-only boot probe coverage feat(booter): prefetch /boot/init.js before kernel handoff feat(booter): add optional /bin warm replication via downloadDiff feat(seeder): add manifestPaths SHA-256 generation in stage-kernel-tree test(peer-seed): cover helper-served block-0 after seeder exit feat(protocol): add Protomux cork batching for initial channel sends test(boot-graph): compare kernel/init labels with booter graph proc docs(boot-policy): add v9-v11 schema examples feat(release): add requireInitJsSha256 fixture generation step test(vfs): add BARE_OS_VFS_SYSTEM_RO_ALIAS coverage test(vfs): strengthen system-drive write-deny path coverage feat(identity): add personal-drive namespace export/import docs and tests test(booter): add guest-to-login warm cache invalidation regression test(vfs): add guest deny coverage for /.bare sensitive paths test(coreutils): add cross-drive mv failure injection coverage test(vfs): add .bareos_empty round-trip coverage across mkdir/rmdir/cp/git-fs test(vfs): add /dev/shm quota enforcement coverage test(proc): add /proc/bare_os/index.json sortedness and schema checks test(vfs): add warm read cache invalidation on replication growth docs(ctx): document bareOsInvalidateWarmReadCaches(reason) test(kernel): add BARE_OS_BOOT_DRY_RUN behavior coverage docs(posix): add dashboard rows for all COREUTILS_COMMANDS feat(curl): expand -w variables beyond http_code/url_effective/size_download feat(wget): mark -N timestamping as explicit unsupported error feat(curl): plumb mutual TLS cert/key intent to ctx.httpFetch metadata feat(shuf): add deterministic seed mode via BARE_OS_SHUF_SEED docs(sort): document -M month-sort as unsupported feat(grep): add explicit -E and -G mode handling test(sed): add Open Group Issue 7 golden fixtures test(awk): add getline VFS regressions for missing/repeat/boundary cases test(shell): add non-interactive here-doc coverage test(shell): add trap delivery coverage for synthetic PIDs/job IDs test(shell): add set -e compound-body behavior coverage docs(shell): strengthen read builtin opt-in guidance test(env): add Bare-runtime coverage for -S and --env-file docs(man): add examples for pathcap-verify pkg-swarm-index corestorectl test(identity): add account/vault backup-restore smoke coverage feat(audit): add tamper detection verification for audit chain rows test(peer-admission): cover strict empty allowlist deny behavior test(peer-admission): add denylist precedence over allowlist coverage test(peer-admission): add BARE_OS_PEER_REQUIRE_CAPS_JSON metadata checks docs(identity): add trusted-key rotation example for path capabilities feat(schema): tighten extensionSignerPinsV2-V4 hash validation test(delegate): add allowlist negative cases for curl/wget/git/hrpc/systemctl test(proc): extend /proc/self/environ redaction key coverage docs(security): add peer-assisted block-0 mirroring threat-model notes feat(bench): add boot budget trend output from real booter phases test(baretop): align fixture coverage with /proc snapshot key set test(metrics): validate /proc/bare_os/metrics.prom OpenMetrics shape docs(ops): add structured seeder NDJSON examples test(replication): add live stall-hint coverage for no_peers/length_unavailable/ok docs(release): add corestore-snapshot workflow to checklist docs(ops): add mirror-drive experiment utility to maintainer workflow test(booter): add monitor progress coverage for replication live sketch feat(seeder): validate DHT bootstrap address class JSON inputs docs(network): add HYPERSWARM_BOOTSTRAP testnet operator guidance chore(root): add deterministic test:integration script docs(ci): add local CI runbook for no-.github environments docs(release): add npm run test:bare after npm test feat(verify): add protocol docs/package version parity checker feat(verify): enforce feature-roadmap canonical path consistency feat(lockfile-drift): add tier-1 strict fail option for mismatches docs(lockfile-drift): add udx-native and blind-peering upgrade workflow notes docs(cli-parity): add bare-fetch upstream issue tracking row feat(bundle-health): generate per-tier bundle size regression thresholds feat(doc-contracts): verify handbook references to current proc schema versions feat(pretest): add validate-mermaid-syntax gate feat(probe): add bare-runtime top-25 critical command lane docs(protocol): update capability-word prose from bits..bits5 to current words docs(two-drive): document /tmp /var/log and account-prefix routing docs(security): add concise boot trust model page and links docs(dev-guide): add P2P lab cookbook section docs(dev-guide): add how-to for adding seed RPCs docs(dev-guide): add how-to for adding /proc/bare_os nodes docs(dev-guide): add /bin utility checklist for man/posix/build/parity/tests docs(user-manual): add short What BareOS is not section
42 lines
1.9 KiB
Markdown
42 lines
1.9 KiB
Markdown
# Concept — Two-drive model
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Bare OS splits the world into two **Hyperdrives** so you can **replicate the OS image** without forking everyone’s private state.
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## System drive
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- Holds the **stock tree**: `/boot`, `/bin`, kernel bundles, `man` JSON, optional `/lib/bare` bundles.
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- Treated as **image policy** — you replicate it from peers like a read-mostly artifact.
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## Personal drive
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- Holds **per-machine mutable state**: your **`$HOME`**, **`/.bare`** (identity, policy blobs guests may not see), session-scoped **`/tmp`**, **`/var/log`**, history, and anything that should not be overwritten when the system image updates.
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- In account-prefix mode (**`BARE_OS_PERSONAL_ACCT_PREFIX=1`**), user state is routed under **`/.bare-os/acct/<principal>/...`** so multiple principals can share one personal drive without path collisions.
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## VFS routing (mental model)
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The booter-backed VFS **mounts both** and **routes paths**: home + account-prefixed state, **`/.bare`**, session **`/tmp`**, and **`/var/log`** land on the personal drive; the rest of the POSIX-shaped tree comes from the system image. Exact policy and edge cases live in the booter reference and handbook.
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```mermaid
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flowchart LR
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subgraph routes [Path classes]
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H["$HOME and account prefixes /.bare-os/acct/<principal>/home"]
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B["/.bare and account metadata"]
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T["/tmp and /var/log"]
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R["Rest of tree e.g. /bin /boot /etc"]
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end
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subgraph drives [Drives]
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P[Personal Hyperdrive]
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S[System Hyperdrive]
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end
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H --> P
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B --> P
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T --> P
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R --> S
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```
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## Read next
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- **Handbook** — [Chapter 5 — Identity, vault, HDMS](../../handbook/05-identity-vault-and-hdms.md) (how `/.bare` behaves for guests vs users).
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- **Reference** — [package-bare-os-booter.md](../reference/package-bare-os-booter.md) (VFS, guest `/.bare` policy, env gates).
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- **Security** — [Vault threat model](../security/vault-threat-model.md).
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