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CONTAP-799345: ONTAP 9.17.1P10 can panic during a scheduled SnapMirror update

NetApp documents an ONTAP 9.17.1P10 panic during scheduled SnapMirror update processing. What is confirmed, what remains unpublished, and what protection administrators should verify.

Original reporting NetApp Black Box analysis, 2026-10-11. Market data is our own Yahoo Finance API fetch; financial figures come from NetApp’s Q1 FY27 release and SEC exhibit. Cramer’s view is identified as opinion, not investment advice. Back to the news index.

Based on NetApp Knowledge Base issue CONTAP-799345. The KB is the only source for the defect-specific claims below; where it does not publish a fix, workaround, or wider affected-version range, those details remain explicitly unknown.

ONTAP 9.17.1P10 SNAPMIRROR PANIC CONTAP-799345 Oct 27, 2026

The confirmed failure signature

NetApp has documented a panic in ONTAP 9.17.1P10 during a scheduled SnapMirror update. The published signature references:

src/sk_core/sk_msg_proc.c:853: Assertion failure

The KB says the panic occurs while SnapMirror workflow processing handles a volume update or resize operation. The storage system reboots, and the scheduled update can stop unexpectedly. That is the complete confirmed scope: a specific release, a specific workflow, and a recognizable panic string.

This is an issue disclosure, not a new SnapMirror feature

CONTAP-799345 does not announce a change in replication behavior or a capability added over the previous release. It records a failure mode in 9.17.1P10. NetApp has not published, in the KB entry, a root cause beyond the assertion location, a workaround, a corrected patch level, or a statement that every SnapMirror relationship on 9.17.1P10 is affected.

That distinction matters for change control. Do not describe the incident as a broad 9.17.1 defect, assume that a later release contains the correction, or infer that a manual update is safe. The article identifies scheduled update processing; it does not compare scheduled and manual paths.

The operational consequence

The immediate event is a node reboot. The protection consequence is that the transfer in progress may stop, leaving the destination behind its intended recovery point until a subsequent update completes. Treat the reboot and the replication interruption as separate checks: node availability returning does not, by itself, prove the protection relationship caught up.

For context, NetApp documents that an unsuccessful incremental transfer can leave a restart checkpoint and that the next update can continue from it. That is normal command behavior, not a CONTAP-799345 recovery guarantee. Use the site’s SnapMirror reference to interpret relationship state, health, transfer errors, and lag rather than assuming the schedule recovered cleanly.

What administrators should verify

  1. Match the release. Confirm whether the cluster is actually running ONTAP 9.17.1P10. The public issue entry does not establish the same exposure for another patch level.
  2. Match the event. Preserve the panic record and look for the published sk_msg_proc.c:853 assertion instead of grouping every reboot during replication under this defect.
  3. Check every relevant relationship. Review relationship health, state, lag, and the last transfer result after the node returns. A schedule firing is not evidence that its transfer completed.
  4. Escalate with evidence. Give NetApp Support the ONTAP version, panic signature, relationship paths, transfer timing, and case reference CONTAP-799345. Ask Support to identify an approved remediation or target release for the specific system.

No disruptive command is prescribed here. In particular, changing schedules, forcing an update, or upgrading solely on an assumed fix version would go beyond the published issue record.

Upgrade and topology boundaries

Before an upgrade to 9.17.1P10, operators with scheduled SnapMirror relationships should include CONTAP-799345 in the release-risk review and obtain current guidance from NetApp Support. For a cluster already on that build, the defensible next step is to verify exposure and protection state, not to guess at an unlisted fix.

The KB does not identify the relationship policy or topology that triggered its case. It also does not say that SnapMirror active sync is affected. Active sync has additional health signals, including Mediator connectivity and quorum, but those checks should not be presented as evidence for or against this async scheduled-update defect.

What to watch next

The missing release note is the key next fact: a NetApp-published fixed version, workaround, or expanded affected-version statement. Until one appears, CONTAP-799345 is a high-consequence but narrowly documented 9.17.1P10 issue. Keep the case identifier attached to the operational record so future NetApp guidance can be mapped back to the affected transfer and reboot.

Sources: NetApp Knowledge Base — CONTAP-799345 · NetApp ONTAP command reference — snapmirror update · NetApp documentation — monitor SnapMirror active sync. Outcome metric: indexed page plus first impressions on the CONTAP-799345 query; UNKNOWN until Search Console data is available.

Sources and corroboration

Trigger and Cramer context: Insider Monkey, Oct. 10, 2026, also syndicated by Yahoo Finance. Financials and guidance: NetApp Q1 FY27 results, corroborated by the SEC-filed Exhibit 99.1. Market series: Yahoo Finance chart API, fetched into state/ntap_market.json at 2026-10-11T04:05Z.

Segment shares and the 31.2% price change are calculations from the cited figures and are labelled as such. This independent analysis is not investment advice. Outcome metric: indexed page plus first impressions on the story query; UNKNOWN until Search Console data is available.

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