fix(site-explorer): decouple RMS enrichment from machine creation - #5347
fix(site-explorer): decouple RMS enrichment from machine creation#5347pbreton wants to merge 6 commits into
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Summary by CodeRabbit
WalkthroughSite Explorer now commits machines without synchronous RMS enrichment. A later batch reconciliation retrieves slot and tray values, records failures, persists valid values best-effort, and retries on a later exploration run. ChangesDeferred RMS location reconciliation
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to Machine creation now commits before RMS location enrichment, but the current flow can erase an already known slot or tray when RMS returns a partial or invalid result and can still delay later Site Explorer iterations while waiting on RMS. These bounded data-correctness and availability risks should be fixed or explicitly accepted before merge. Sequence Diagram(s)sequenceDiagram
participant SiteExplorer
participant MachineCreator
participant RMS
participant Database
SiteExplorer->>MachineCreator: Create machines
MachineCreator->>Database: Commit machine records
SiteExplorer->>MachineCreator: Reconcile locations
MachineCreator->>RMS: Request node-device-info
RMS-->>MachineCreator: Return slot and tray data
MachineCreator->>Database: Persist valid location values
🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation The changes address [ Full details: Out of Scope Changes checkExplanation Most changes support [ ✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@crates/site-explorer/src/machine_creator.rs`:
- Around line 501-506: Update the Rust doc comment for create_managed_host to
state that RMS slot and tray enrichment is best effort and runs asynchronously,
so a successful return does not guarantee enrichment has completed or persisted.
- Around line 501-506: Update the enrichment task launched in the
machine-creation flow around enrich_machine_slot_and_tray so it is registered
with the service-owned JoinSet or task tracker instead of being detached via
tokio::spawn and drop. Ensure SiteExplorer::start’s lifecycle tracking includes
this task and shutdown awaits or drains it while preserving best-effort
enrichment.
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crates/rack/src/rms_client.rscrates/site-explorer/src/machine_creator.rscrates/site-explorer/tests/integration/machine_creator.rs
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That looks like a rather complicated fix, and I'm not sure how useful it is: Are we ok if we end up getting a machine without tray index and slot index, and if that stays the way forever? Can we consider something simpler along:
I think the core things to decide are
I'd also advise in general against spawning more background tasks - these are not guaranteed to be guarded against race-conditions as the current site-explorer and statemachine operations are. @jayzhudev @inf0rmatiker @vinodchitraliNVIDIA please review |
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These slot and index info are best-effort for now. We should not try to run it if RMS is not available. In the near future, this query functionality should be consolidated into the CM backend interface. This will actually be a first step towards moving HW-specific details in our ingestion logic all into backend (RMS for rack trays and beyond). |
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It looks like "#1: just move it out of site explorer and into the state machine" would be the right solution but if we will "#2: consolidate into the CM backend interface" soon then should we try to tackle this right now? I took it since it does look like a sufficiently annoying bug but I miss the large picture and the timelines: I'm ok to do #1 to unblock even if it gets superseded by #2 in the long run... It's currently slated for v2.2. |
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My understanding is, the current behavior of site explorer calling RMS for slot info itself is fine. It is just we do not want to call it in the first place if RMS is not available and do not want to retry on it if it failed. Is that correct? But I am not against moving this into state machine if that's where we want to get data from BMC in general. By "consolidate into CM backend interface" I meant the call should not directly (and conditionally) go to RMS client, regardless of whether it is from site explorer or state machine. It should go to the CM backend, which will dispatch to the correct backend (RMS) and should never really fail, unless Redfish call failed during backend execution. |
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Inline comments:
In `@crates/site-explorer/src/machine_creator.rs`:
- Around line 516-519: Refactor the RMS enrichment in
create_managed_host_with_selection so create_machines does not await
fetch_slot_and_tray or persist_machine_slot_and_tray during the machine-creation
loop. Schedule the post-commit enrichment through the Site Explorer-owned joined
and cancellable task set, and ensure that task set is awaited during shutdown
rather than using detached tokio::spawn.
- Around line 483-487: Gate the earlier RMS node-identity validation branch on
*rms_available in addition to self.rms_client, so it is skipped after an RMS
lookup failure disables enrichment. Add a two-host regression test covering a
failed first lookup followed by a second host without a usable RMS rack profile,
and verify machine creation succeeds without RMS validation.
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Inline comments:
In `@crates/site-explorer/src/machine_creator.rs`:
- Around line 279-286: Update reconcile_machine_locations and the
persist_machine_slot_and_tray/update_slot_and_tray flow so an absent or invalid
RMS slot_number or tray_index leaves that corresponding stored column unchanged,
while present values are updated normally; do not overwrite both columns
unconditionally with None.
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crates/api-core/src/setup.rscrates/api-db/src/machine.rscrates/site-explorer/src/lib.rscrates/site-explorer/src/machine_creator.rscrates/site-explorer/tests/integration/machine_creator.rs
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- crates/api-core/src/setup.rs
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Inline comments:
In `@crates/api-db/src/machine.rs`:
- Around line 3392-3393: Document the new public fields slot_number and
tray_index on MachineRmsIdentity, specifying their RMS source and the meaning of
None for each field. Follow the repository’s documentation conventions and
document both declarations without changing their types or behavior.
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Signed-off-by: Patrice Breton <pbreton@nvidia.com>
Signed-off-by: Patrice Breton <pbreton@nvidia.com>
Signed-off-by: Patrice Breton <pbreton@nvidia.com>
Signed-off-by: Patrice Breton <pbreton@nvidia.com>
Signed-off-by: Patrice Breton <pbreton@nvidia.com>
Signed-off-by: Patrice Breton <pbreton@nvidia.com>
4 participants
Summary
Site Explorer currently waits for the best-effort RMS slot and tray lookup after committing each new machine. When RMS is unavailable, client retries can therefore stall each host and delay the rest of the machine-creation iteration.
This change releases the admin-network admission permit after the machine transaction commits and runs RMS slot/tray enrichment in a detached background task. Machine creation can continue immediately, while successful RMS responses still persist
slot_numberandtray_index. Database persistence failures continue to emit the existing enrichment failure event.Related issues
Fixes #5074.
Type of Change
Breaking Changes
Testing
Validation performed on
pbreton02.nvidia.com:cargo test -p carbide-site-explorercargo test -p carbide-rack --features test-supportcargo clippy -p carbide-site-explorer -p carbide-rack --all-targets --all-features -- -D warningscargo +nightly fmt --all -- --checkgit diff --checkThe regression test was confirmed to fail before the fix because machine creation remained blocked after RMS received the request. It passes with the fix and verifies that slot/tray enrichment is persisted after RMS resumes.
Additional Notes
This is an attempt at fully automated issue resolution using Codex with Sol 5.6 Medium.