fix(orchestrator): resolve remaining P2P/compression/V5 issues - #3015
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Several resource leaks were identified in packages/orchestrator/pkg/sandbox/build/storage_diff.go. In createDiff, the probe upstream opened to detect peer routing is leaked when the build is not peer-routed or when a peer transition occurs. Additionally, the main upstream seekable opened during createDiff is leaked if subsequent operations like size lookup or newStorageDiff initialization fail. Finally, in reloadSourceLocked, the previous upstream seekable is overwritten in the atomic pointer without being closed when reloading the storage source.
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V1-era templates (UUIDv1 timestamps from early 2025) have a data file at the basic uncompressed path but no header file in storage. After #3015, createDiff reaches them via two paths and both fail: 1. Peer-served current header: !hasEntry for the ancestor, default branch refreshes the ancestor's header, ErrObjectNotExist propagates. 2. Storage-loaded current header: LoadHeader's backfill inserts a zero BuildData{} marker for V3-or-older ancestors, hasEntry is true, but bd.FrameData is per-mapping trimmed so initialFT stays nil and the first read triggers reloadProactive → same ErrObjectNotExist. Catch both at construction in createDiff: - !hasEntry refresh returns ErrObjectNotExist → latch the basic upstream as UncompressedFullFrameTable. - hasEntry with zero bd (the backfill marker) → latch the basic upstream as UncompressedFullFrameTable up front, never refresh. reloadSourceLocked stays strict: any runtime refresh failure is a race or genuine miss, never a legacy ancestor. Treating it as uncompressed would feed compressed bytes through a raw reader on modern builds.
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🤖 I have created a release *beep* *boop* --- ## 0.0.1 (2026-07-30) ### Features * **api:** add sandbox IAM workload token configuration ([13ddb3d](13ddb3d)) * **api:** add sandbox workload identity permission ([#3319](#3319)) ([13ddb3d](13ddb3d)) * **api:** SOCKS5 egress proxy on sandbox network config (BYOP) ([#2642](#2642)) ([1fc3820](1fc3820)) * **cfg:** add DISABLE_STARTUP_RECLAIM flag ([#3081](#3081)) ([7677ca6](7677ca6)) * **clickhouse:** implement multi-cluster fan-out for events and stats ([#2925](#2925)) ([39594c6](39594c6)) * dynamic sandbox log routing and ClickHouse-backed log reads ([#3236](#3236)) ([1b19a3b](1b19a3b)) * **envd:** give envd realtime IO priority, reset for user processes ([#2681](#2681)) ([f4bd1b2](f4bd1b2)) * **envd:** split collapse stats into real migrations vs already-huge ([#3021](#3021)) ([0d77614](0d77614)) * **envd:** support user-defined file metadata via xattrs ([#2732](#2732)) ([da8fbe4](da8fbe4)) * **featureflags:** support per-service context providers ([#3100](#3100)) ([65297c1](65297c1)) * freeze user cgroup across pause/resume to keep envd /init responsive ([#2688](#2688)) ([eceb741](eceb741)) * **metrics:** break down pause-snapshot latency by step ([#3426](#3426)) ([657559e](657559e)) * **metrics:** label pause telemetry by fs_only ([#3425](#3425)) ([411b63e](411b63e)) * **observability:** add kill_reason to sandbox.lifecycle.killed ([#2833](#2833)) ([e45418f](e45418f)) * **observability:** include kill_reason in kill-path structured logs ([#2846](#2846)) ([33c49f7](33c49f7)) * **orch:** add envd-version to LaunchDarkly sandbox context ([#3051](#3051)) ([37d3b92](37d3b92)) * **orch:** add less, nftables, iputils-ping, and jq to base provisioning ([#2736](#2736)) ([a1e010e](a1e010e)) * **orch:** collapse envd's heap into 2 MiB hugepages before pause to cut cold-resume faults ([#2997](#2997)) ([6677f73](6677f73)) * **orch:** debug a sandbox guest kernel with resume-build -gdb ([#3040](#3040)) ([37bb0dc](37bb0dc)) * **orch:** decouple warm resume from memfile dedup ([#3166](#3166)) ([77f25a0](77f25a0)) * **orch:** distro-aware template base-image provisioning ([#3411](#3411)) ([f8c7b5b](f8c7b5b)) * **orchestrator/cgroup:** list and destroy leaked sandbox cgroups ([#3086](#3086)) ([bce1d84](bce1d84)) * **orchestrator/nbd:** inspect and disconnect connected devices ([#3087](#3087)) ([4d47148](4d47148)) * **orchestrator/network:** list slot namespaces ([#3089](#3089)) ([c23dbc7](c23dbc7)) * **orchestrator/network:** list slot namespaces ([#3090](#3090)) ([fbfce25](fbfce25)) * **orchestrator:** add -force-reboot to resume-build to cold-boot memory-snaphsot builds ([#3208](#3208)) ([cf8f15b](cf8f15b)) * **orchestrator:** add allocated resource metrics for sandboxes ([#2943](#2943)) ([95cb6d3](95cb6d3)) * **orchestrator:** add dummy orchestrator binary for local API dev ([#2744](#2744)) ([ab56e25](ab56e25)) * **orchestrator:** add NetworkAssignHook for sandbox lifecycle extensions ([#3290](#3290)) ([3261963](3261963)) * **orchestrator:** add soft-delete marker label to the check metric ([#3144](#3144)) ([1ce64f8](1ce64f8)) * **orchestrator:** add v4HeaderForUncompressed FF bit ([#2669](#2669)) ([1f459ee](1f459ee)) * **orchestrator:** always include execution metrics in sandbox webhook events ([#2852](#2852)) ([440edfe](440edfe)) * **orchestrator:** classify envd-init by exit type ([#3139](#3139)) ([1e39a4f](1e39a4f)) * **orchestrator:** graceful sandbox drain on shutdown ([#3069](#3069)) ([6ce68e3](6ce68e3)) * **orchestrator:** graceful template-build drain on shutdown ([#3079](#3079)) ([1b3001c](1b3001c)) * **orchestrator:** improved read-path telemetry ([#3063](#3063)) ([bc3fe84](bc3fe84)) * **orchestrator:** LD-gated ClickHouse write fan-out feature flag ([#3152](#3152)) ([f046fcf](f046fcf)) * **orchestrator:** make build-reserved-disk-space-mb default 256MB ([#3065](#3065)) ([d473f98](d473f98)) * **orchestrator:** record upload compression metrics ([#2761](#2761)) ([9092e35](9092e35)) * **orchestrator:** report hugepage metrics to API ([#3182](#3182)) ([7735bae](7735bae)) * **orchestrator:** run startup reclaim on boot ([#3123](#3123)) ([79b838e](79b838e)) * **orchestrator:** single-instance flock on startup ([#3143](#3143)) ([1320d6e](1320d6e)) * **orchestrator:** soft-delete consumer enforcement for storage index ([#3034](#3034)) ([fbfc918](fbfc918)) * **orchestrator:** tag envd-init meters with start_type ([#3125](#3125)) ([4466b48](4466b48)) * **orchestrator:** track and report last status change timestamp ([#2980](#2980)) ([f79be77](f79be77)) * **orchestrator:** track sandbox lifecycles ([#2998](#2998)) ([057f20c](057f20c)) * **orchestrator:** write layer sizes (logical/mapped/diff) to object metadata ([#3122](#3122)) ([11869c0](11869c0)) * **orch:** harvest resume-prefetch trace on pause ([#3067](#3067)) ([97bd4a5](97bd4a5)) * **orch:** last-cycle memory prefetch on resume ([#3258](#3258)) ([b22e820](b22e820)) * **orch:** make resume-build -gdb work on real nodes + add copy-build -gdb ([#3108](#3108)) ([c684bd2](c684bd2)) * **orch:** opt-in DSCP marker for sandbox egress (SANDBOX_EGRESS_DSCP) ([#3039](#3039)) ([a98cf2c](a98cf2c)) * **orch:** per-start UFFD startup working-set metric ([#2960](#2960)) ([dc386b2](dc386b2)) * **orch:** premade NixOS base-image support ([#3412](#3412)) ([776ba39](776ba39)) * **orch:** record envd init duration histogram on failure with success attribute ([#2749](#2749)) ([afa7458](afa7458)) * **orch:** snapshot fragmentation metrics ([#2931](#2931)) ([842b007](842b007)) * per-team events TTL limit (tier + addons) ([#3181](#3181)) ([f76b2cb](f76b2cb)) * **shared:** add OTEL instrumentation to AWS S3 storage client ([#3172](#3172)) ([25b0fd1](25b0fd1)) * **storage:** per-role storage URLs, env-free storage library ([#3246](#3246)) ([fcbe909](fcbe909)) * **storage:** stamp provenance custom metadata on uploaded objects (incl. headers) ([#3033](#3033)) ([ba8604e](ba8604e)) * **storage:** write-through compressed templates to NFS on upload ([#2827](#2827)) ([57503c1](57503c1)) ### Bug Fixes * added api and orch ([#3454](#3454)) ([fda5e45](fda5e45)) * **block:** rephrase misleading error message in pwritevAll ([#2816](#2816)) ([1555f1b](1555f1b)) * **cache:** use 512-byte units for stat.Blocks in FileSize ([#2949](#2949)) ([0f632a9](0f632a9)) * **clean-nfs-cache:** exclude zombies from delete_age ([#3191](#3191)) ([3fa2aeb](3fa2aeb)) * **compression:** correctness findings from compression audit ([#2803](#2803)) ([d21a6a9](d21a6a9)) * **copy-build:** resolve compression suffix for build data files ([#2859](#2859)) ([8966f7e](8966f7e)) * correct 3 CVES ([#3218](#3218)) ([076823b](076823b)) * **envd:** stop freezing socat cgroup across pause/resume ([#2923](#2923)) ([8b6f2b9](8b6f2b9)) * **inspect-build:** adapt validate to new Chunker upstream API ([#2989](#2989)) ([2e0d3da](2e0d3da)) * **nbd:** adjust status poll sleep from 100ns to 100µs ([02bf51b](02bf51b)) * **nbd:** change NBD status poll sleep from 100ns to 100µs to avoid useless busy spinning ([#2884](#2884)) ([02bf51b](02bf51b)) * **nfsproxy:** deflake TestRoundTrip EADDRINUSE ([#2987](#2987)) ([55f4d18](55f4d18)) * **orch:** denormalize upload metric file type ([#2865](#2865)) ([b1646ca](b1646ca)) * **orch:** disable the chronyd seccomp filter on Alpine when using PHC ([#3453](#3453)) ([e58af28](e58af28)) * **orchestrator:** anchor rsync CWD to root in template file copy ([#2835](#2835)) ([7160db9](7160db9)) * **orchestrator:** atomically replace metadata ([#3321](#3321)) ([0c4ad6b](0c4ad6b)) * **orchestrator:** avoid serializing upload headers twice ([#2762](#2762)) ([9b7b149](9b7b149)) * **orchestrator:** chunk readiness bug in P2P->compressed ([#3185](#3185)) ([74a6e5b](74a6e5b)) * **orchestrator:** deschedule flaky eviction-loop race in TestDiffSto… ([#3173](#3173)) ([88ff17c](88ff17c)) * **orchestrator:** discard poisoned nftables conn on firewall errors ([#3008](#3008)) ([03f10e0](03f10e0)) * **orchestrator:** drop stale pre-init logs ([#3297](#3297)) ([8ec4be5](8ec4be5)) * **orchestrator:** emit compression ratios as fractions, not BP ([#2772](#2772)) ([866f4c1](866f4c1)) * **orchestrator:** export dirty-page stall counter from process start ([#2992](#2992)) ([badc8ad](badc8ad)) * **orchestrator:** harden Firecracker process shutdown ([#2996](#2996)) ([df662e7](df662e7)) * **orchestrator:** harden shutdown network cleanup ([#3000](#3000)) ([de2f391](de2f391)) * **orchestrator:** implement Docker COPY merge semantics in template builds ([#3283](#3283)) ([9174104](9174104)) * **orchestrator:** keep dedup empty-pages telemetry scan-only ([#2991](#2991)) ([35d0832](35d0832)) * **orchestrator:** let build-cache threshold flag raise above its fal… ([#3175](#3175)) ([06393c3](06393c3)) * **orchestrator:** log missing egress proxy in startup reclaim instead of defaulting silently ([#3116](#3116)) ([6ca3163](6ca3163)) * **orchestrator:** make copy-build handle filesystem-only snapshots ([#3299](#3299)) ([62add04](62add04)) * **orchestrator:** measure ext4 free space from block groups ([#3282](#3282)) ([f18f05f](f18f05f)) * **orchestrator:** normalize upload metric file labels ([#2767](#2767)) ([6dec8b3](6dec8b3)) * **orchestrator:** order egress config/firewall updates to close BYOP enable race ([#3313](#3313)) ([7faa59e](7faa59e)) * **orchestrator:** order envd.service after local-fs.target ([#3043](#3043)) ([ea2663e](ea2663e)) * **orchestrator:** order envd.service after systemd-tmpfiles-setup ([#3130](#3130)) ([9481811](9481811)) * **orchestrator:** pause upload retain retry ([#2993](#2993)) ([4f81799](4f81799)) * **orchestrator:** pin tap device host-side MAC address ([#3271](#3271)) ([3c786ba](3c786ba)) * **orchestrator:** pin UFFD copy source buffers ([#2745](#2745)) ([837fa91](837fa91)) * **orchestrator:** preserve full ENV value across stdout chunks ([#2740](#2740)) ([4822e6d](4822e6d)) * **orchestrator:** read V3 ancestors as uncompressed instead of failing ([#2994](#2994)) ([c479dd3](c479dd3)) * **orchestrator:** reject standby while draining ([#3325](#3325)) ([475a7ee](475a7ee)) * **orchestrator:** report real V4 header compression ratio ([#2771](#2771)) ([ecd344e](ecd344e)) * **orchestrator:** resolve remaining P2P/compression/V5 issues ([#3015](#3015)) ([1e4379e](1e4379e)) * **orchestrator:** sanitize OCI pull errors ([#3096](#3096)) ([a3af6c0](a3af6c0)) * **orchestrator:** scope rootfs hash to provision default ([#3129](#3129)) ([475f955](475f955)) * **orchestrator:** stop Checks health-loop leaking ([#2739](#2739)) ([17e6e60](17e6e60)) * **orchestrator:** survive SIGBUS from failing disks under mmap'd caches ([#3385](#3385)) ([728bba3](728bba3)) * **orchestrator:** tolerate missing header for legacy templates ([#3026](#3026)) ([8a44bfe](8a44bfe)) * **orch:** fall back to ID_LIKE with a warning instead of rejecting ([#3459](#3459)) ([7167818](7167818)) * **orch:** prevent NBD dispatch read-loop stall on WRITE_ZEROES (behind flag) ([#3048](#3048)) ([efd3d4d](efd3d4d)) * **orch:** split scheduling base build id per artifact ([#2920](#2920)) ([3e35a2a](3e35a2a)) * **orch:** validate copy-build -gdb buckets before the snapshot copy ([#3446](#3446)) ([586ad74](586ad74)) * **shared:** never report a failed envd command stream as success ([#3281](#3281)) ([69c06b6](69c06b6)) * **storage:** compression upload & cache correctness fixes ([#3231](#3231)) ([980748f](980748f)) * **storage:** don't assume V4+ ancestor gaps are uncompressed ([#3447](#3447)) ([bfdbb24](bfdbb24)) * **uffd:** dedupe deferred page faults ([#2864](#2864)) ([9680a41](9680a41)) * WrapContextAsUserError should not misclassify internal timeouts as user cancellations ([#3155](#3155)) ([8f83959](8f83959)) ### Performance Improvements * **build:** cache resolved Diff per BuildId within File.ReadAt ([#2838](#2838)) ([53de07f](53de07f)) * **build:** parallelize fragmented backing reads ([#2872](#2872)) ([c7655a7](c7655a7)) * **clean-nfs-cache:** restore dirfd-relative statx ([#2766](#2766)) ([6bdbedb](6bdbedb)) * **header:** add V5 columnar varint header format ([#2847](#2847)) ([9dd931b](9dd931b)) * **header:** pack cached Header.Mapping into a compact form ([#2844](#2844)) ([7f0b13c](7f0b13c)) * **orchestrator:** add memfile dedup density threshold ([#2862](#2862)) ([7ccfa02](7ccfa02)) * **orchestrator:** avoid V3-ancestor header refresh ([#2999](#2999)) ([cb6aa0b](cb6aa0b)) * **orch:** metrics for dirty page throttling ([#2858](#2858)) ([d2aa554](d2aa554)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: e2b-release-please[bot] <298072688+e2b-release-please[bot]@users.noreply.github.com> Co-authored-by: Charlie Wyse <charlie.wyse@e2b.dev>
jakubno
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Aug 3, 2026
🤖 I have created a release *beep* *boop* --- ## 0.0.1 (2026-07-30) ### Features * **api:** add sandbox IAM workload token configuration ([13ddb3d](13ddb3d)) * **api:** add sandbox workload identity permission ([#3319](#3319)) ([13ddb3d](13ddb3d)) * **api:** SOCKS5 egress proxy on sandbox network config (BYOP) ([#2642](#2642)) ([1fc3820](1fc3820)) * **cfg:** add DISABLE_STARTUP_RECLAIM flag ([#3081](#3081)) ([7677ca6](7677ca6)) * **clickhouse:** implement multi-cluster fan-out for events and stats ([#2925](#2925)) ([39594c6](39594c6)) * dynamic sandbox log routing and ClickHouse-backed log reads ([#3236](#3236)) ([1b19a3b](1b19a3b)) * **envd:** give envd realtime IO priority, reset for user processes ([#2681](#2681)) ([f4bd1b2](f4bd1b2)) * **envd:** split collapse stats into real migrations vs already-huge ([#3021](#3021)) ([0d77614](0d77614)) * **envd:** support user-defined file metadata via xattrs ([#2732](#2732)) ([da8fbe4](da8fbe4)) * **featureflags:** support per-service context providers ([#3100](#3100)) ([65297c1](65297c1)) * freeze user cgroup across pause/resume to keep envd /init responsive ([#2688](#2688)) ([eceb741](eceb741)) * **metrics:** break down pause-snapshot latency by step ([#3426](#3426)) ([f551118](f551118)) * **metrics:** label pause telemetry by fs_only ([#3425](#3425)) ([4be33ba](4be33ba)) * **observability:** add kill_reason to sandbox.lifecycle.killed ([#2833](#2833)) ([e45418f](e45418f)) * **observability:** include kill_reason in kill-path structured logs ([#2846](#2846)) ([33c49f7](33c49f7)) * **orch:** add envd-version to LaunchDarkly sandbox context ([#3051](#3051)) ([37d3b92](37d3b92)) * **orch:** add less, nftables, iputils-ping, and jq to base provisioning ([#2736](#2736)) ([a1e010e](a1e010e)) * **orch:** collapse envd's heap into 2 MiB hugepages before pause to cut cold-resume faults ([#2997](#2997)) ([6677f73](6677f73)) * **orch:** debug a sandbox guest kernel with resume-build -gdb ([#3040](#3040)) ([37bb0dc](37bb0dc)) * **orch:** decouple warm resume from memfile dedup ([#3166](#3166)) ([77f25a0](77f25a0)) * **orch:** distro-aware template base-image provisioning ([#3411](#3411)) ([1abece1](1abece1)) * **orchestrator/cgroup:** list and destroy leaked sandbox cgroups ([#3086](#3086)) ([bce1d84](bce1d84)) * **orchestrator/nbd:** inspect and disconnect connected devices ([#3087](#3087)) ([4d47148](4d47148)) * **orchestrator/network:** list slot namespaces ([#3089](#3089)) ([c23dbc7](c23dbc7)) * **orchestrator/network:** list slot namespaces ([#3090](#3090)) ([fbfce25](fbfce25)) * **orchestrator:** add -force-reboot to resume-build to cold-boot memory-snaphsot builds ([#3208](#3208)) ([cf8f15b](cf8f15b)) * **orchestrator:** add allocated resource metrics for sandboxes ([#2943](#2943)) ([95cb6d3](95cb6d3)) * **orchestrator:** add dummy orchestrator binary for local API dev ([#2744](#2744)) ([ab56e25](ab56e25)) * **orchestrator:** add NetworkAssignHook for sandbox lifecycle extensions ([#3290](#3290)) ([3261963](3261963)) * **orchestrator:** add soft-delete marker label to the check metric ([#3144](#3144)) ([1ce64f8](1ce64f8)) * **orchestrator:** add v4HeaderForUncompressed FF bit ([#2669](#2669)) ([1f459ee](1f459ee)) * **orchestrator:** always include execution metrics in sandbox webhook events ([#2852](#2852)) ([440edfe](440edfe)) * **orchestrator:** classify envd-init by exit type ([#3139](#3139)) ([1e39a4f](1e39a4f)) * **orchestrator:** graceful sandbox drain on shutdown ([#3069](#3069)) ([6ce68e3](6ce68e3)) * **orchestrator:** graceful template-build drain on shutdown ([#3079](#3079)) ([1b3001c](1b3001c)) * **orchestrator:** improved read-path telemetry ([#3063](#3063)) ([bc3fe84](bc3fe84)) * **orchestrator:** LD-gated ClickHouse write fan-out feature flag ([#3152](#3152)) ([f046fcf](f046fcf)) * **orchestrator:** make build-reserved-disk-space-mb default 256MB ([#3065](#3065)) ([d473f98](d473f98)) * **orchestrator:** record upload compression metrics ([#2761](#2761)) ([9092e35](9092e35)) * **orchestrator:** report hugepage metrics to API ([#3182](#3182)) ([7735bae](7735bae)) * **orchestrator:** run startup reclaim on boot ([#3123](#3123)) ([79b838e](79b838e)) * **orchestrator:** single-instance flock on startup ([#3143](#3143)) ([1320d6e](1320d6e)) * **orchestrator:** soft-delete consumer enforcement for storage index ([#3034](#3034)) ([fbfc918](fbfc918)) * **orchestrator:** tag envd-init meters with start_type ([#3125](#3125)) ([4466b48](4466b48)) * **orchestrator:** track and report last status change timestamp ([#2980](#2980)) ([f79be77](f79be77)) * **orchestrator:** track sandbox lifecycles ([#2998](#2998)) ([057f20c](057f20c)) * **orchestrator:** write layer sizes (logical/mapped/diff) to object metadata ([#3122](#3122)) ([11869c0](11869c0)) * **orch:** harvest resume-prefetch trace on pause ([#3067](#3067)) ([97bd4a5](97bd4a5)) * **orch:** last-cycle memory prefetch on resume ([#3258](#3258)) ([ea94196](ea94196)) * **orch:** make resume-build -gdb work on real nodes + add copy-build -gdb ([#3108](#3108)) ([5385594](5385594)) * **orch:** opt-in DSCP marker for sandbox egress (SANDBOX_EGRESS_DSCP) ([#3039](#3039)) ([a98cf2c](a98cf2c)) * **orch:** per-start UFFD startup working-set metric ([#2960](#2960)) ([dc386b2](dc386b2)) * **orch:** premade NixOS base-image support ([#3412](#3412)) ([4bd42d2](4bd42d2)) * **orch:** record envd init duration histogram on failure with success attribute ([#2749](#2749)) ([afa7458](afa7458)) * **orch:** snapshot fragmentation metrics ([#2931](#2931)) ([842b007](842b007)) * per-team events TTL limit (tier + addons) ([#3181](#3181)) ([f76b2cb](f76b2cb)) * **shared:** add OTEL instrumentation to AWS S3 storage client ([#3172](#3172)) ([25b0fd1](25b0fd1)) * **storage:** per-role storage URLs, env-free storage library ([#3246](#3246)) ([fcbe909](fcbe909)) * **storage:** stamp provenance custom metadata on uploaded objects (incl. headers) ([#3033](#3033)) ([ba8604e](ba8604e)) * **storage:** write-through compressed templates to NFS on upload ([#2827](#2827)) ([57503c1](57503c1)) ### Bug Fixes * added api and orch ([#3454](#3454)) ([d56e0a8](d56e0a8)) * **block:** rephrase misleading error message in pwritevAll ([#2816](#2816)) ([1555f1b](1555f1b)) * **cache:** use 512-byte units for stat.Blocks in FileSize ([#2949](#2949)) ([0f632a9](0f632a9)) * **clean-nfs-cache:** exclude zombies from delete_age ([#3191](#3191)) ([3fa2aeb](3fa2aeb)) * **compression:** correctness findings from compression audit ([#2803](#2803)) ([d21a6a9](d21a6a9)) * **copy-build:** resolve compression suffix for build data files ([#2859](#2859)) ([8966f7e](8966f7e)) * correct 3 CVES ([#3218](#3218)) ([076823b](076823b)) * **envd:** stop freezing socat cgroup across pause/resume ([#2923](#2923)) ([8b6f2b9](8b6f2b9)) * **inspect-build:** adapt validate to new Chunker upstream API ([#2989](#2989)) ([2e0d3da](2e0d3da)) * **nbd:** adjust status poll sleep from 100ns to 100µs ([02bf51b](02bf51b)) * **nbd:** change NBD status poll sleep from 100ns to 100µs to avoid useless busy spinning ([#2884](#2884)) ([02bf51b](02bf51b)) * **nfsproxy:** deflake TestRoundTrip EADDRINUSE ([#2987](#2987)) ([55f4d18](55f4d18)) * **orch:** denormalize upload metric file type ([#2865](#2865)) ([b1646ca](b1646ca)) * **orch:** disable the chronyd seccomp filter on Alpine when using PHC ([#3453](#3453)) ([dfa9764](dfa9764)) * **orchestrator:** anchor rsync CWD to root in template file copy ([#2835](#2835)) ([7160db9](7160db9)) * **orchestrator:** atomically replace metadata ([#3321](#3321)) ([0c4ad6b](0c4ad6b)) * **orchestrator:** avoid serializing upload headers twice ([#2762](#2762)) ([9b7b149](9b7b149)) * **orchestrator:** chunk readiness bug in P2P->compressed ([#3185](#3185)) ([74a6e5b](74a6e5b)) * **orchestrator:** deschedule flaky eviction-loop race in TestDiffSto… ([#3173](#3173)) ([88ff17c](88ff17c)) * **orchestrator:** discard poisoned nftables conn on firewall errors ([#3008](#3008)) ([03f10e0](03f10e0)) * **orchestrator:** drop stale pre-init logs ([#3297](#3297)) ([8ec4be5](8ec4be5)) * **orchestrator:** emit compression ratios as fractions, not BP ([#2772](#2772)) ([866f4c1](866f4c1)) * **orchestrator:** export dirty-page stall counter from process start ([#2992](#2992)) ([badc8ad](badc8ad)) * **orchestrator:** harden Firecracker process shutdown ([#2996](#2996)) ([df662e7](df662e7)) * **orchestrator:** harden shutdown network cleanup ([#3000](#3000)) ([de2f391](de2f391)) * **orchestrator:** implement Docker COPY merge semantics in template builds ([#3283](#3283)) ([9174104](9174104)) * **orchestrator:** keep dedup empty-pages telemetry scan-only ([#2991](#2991)) ([35d0832](35d0832)) * **orchestrator:** let build-cache threshold flag raise above its fal… ([#3175](#3175)) ([06393c3](06393c3)) * **orchestrator:** log missing egress proxy in startup reclaim instead of defaulting silently ([#3116](#3116)) ([6ca3163](6ca3163)) * **orchestrator:** make copy-build handle filesystem-only snapshots ([#3299](#3299)) ([62add04](62add04)) * **orchestrator:** measure ext4 free space from block groups ([#3282](#3282)) ([f18f05f](f18f05f)) * **orchestrator:** normalize upload metric file labels ([#2767](#2767)) ([6dec8b3](6dec8b3)) * **orchestrator:** order egress config/firewall updates to close BYOP enable race ([#3313](#3313)) ([7faa59e](7faa59e)) * **orchestrator:** order envd.service after local-fs.target ([#3043](#3043)) ([ea2663e](ea2663e)) * **orchestrator:** order envd.service after systemd-tmpfiles-setup ([#3130](#3130)) ([9481811](9481811)) * **orchestrator:** pause upload retain retry ([#2993](#2993)) ([4f81799](4f81799)) * **orchestrator:** pin tap device host-side MAC address ([#3271](#3271)) ([3c786ba](3c786ba)) * **orchestrator:** pin UFFD copy source buffers ([#2745](#2745)) ([837fa91](837fa91)) * **orchestrator:** preserve full ENV value across stdout chunks ([#2740](#2740)) ([4822e6d](4822e6d)) * **orchestrator:** read V3 ancestors as uncompressed instead of failing ([#2994](#2994)) ([c479dd3](c479dd3)) * **orchestrator:** reject standby while draining ([#3325](#3325)) ([475a7ee](475a7ee)) * **orchestrator:** report real V4 header compression ratio ([#2771](#2771)) ([ecd344e](ecd344e)) * **orchestrator:** resolve remaining P2P/compression/V5 issues ([#3015](#3015)) ([1e4379e](1e4379e)) * **orchestrator:** sanitize OCI pull errors ([#3096](#3096)) ([a3af6c0](a3af6c0)) * **orchestrator:** scope rootfs hash to provision default ([#3129](#3129)) ([475f955](475f955)) * **orchestrator:** stop Checks health-loop leaking ([#2739](#2739)) ([17e6e60](17e6e60)) * **orchestrator:** survive SIGBUS from failing disks under mmap'd caches ([#3385](#3385)) ([8694d08](8694d08)) * **orchestrator:** tolerate missing header for legacy templates ([#3026](#3026)) ([8a44bfe](8a44bfe)) * **orch:** fall back to ID_LIKE with a warning instead of rejecting ([#3459](#3459)) ([73399b3](73399b3)) * **orch:** prevent NBD dispatch read-loop stall on WRITE_ZEROES (behind flag) ([#3048](#3048)) ([efd3d4d](efd3d4d)) * **orch:** split scheduling base build id per artifact ([#2920](#2920)) ([3e35a2a](3e35a2a)) * **orch:** validate copy-build -gdb buckets before the snapshot copy ([#3446](#3446)) ([9be382f](9be382f)) * **shared:** never report a failed envd command stream as success ([#3281](#3281)) ([69c06b6](69c06b6)) * **storage:** compression upload & cache correctness fixes ([#3231](#3231)) ([980748f](980748f)) * **storage:** don't assume V4+ ancestor gaps are uncompressed ([#3447](#3447)) ([f828d12](f828d12)) * **uffd:** dedupe deferred page faults ([#2864](#2864)) ([9680a41](9680a41)) * WrapContextAsUserError should not misclassify internal timeouts as user cancellations ([#3155](#3155)) ([8f83959](8f83959)) ### Performance Improvements * **build:** cache resolved Diff per BuildId within File.ReadAt ([#2838](#2838)) ([53de07f](53de07f)) * **build:** parallelize fragmented backing reads ([#2872](#2872)) ([c7655a7](c7655a7)) * **clean-nfs-cache:** restore dirfd-relative statx ([#2766](#2766)) ([6bdbedb](6bdbedb)) * **header:** add V5 columnar varint header format ([#2847](#2847)) ([9dd931b](9dd931b)) * **header:** pack cached Header.Mapping into a compact form ([#2844](#2844)) ([7f0b13c](7f0b13c)) * **orchestrator:** add memfile dedup density threshold ([#2862](#2862)) ([7ccfa02](7ccfa02)) * **orchestrator:** avoid V3-ancestor header refresh ([#2999](#2999)) ([cb6aa0b](cb6aa0b)) * **orch:** metrics for dirty page throttling ([#2858](#2858)) ([d2aa554](d2aa554)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: e2b-release-please[bot] <298072688+e2b-release-please[bot]@users.noreply.github.com> Co-authored-by: Charlie Wyse <charlie.wyse@e2b.dev>
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