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vscan scan_request_pending counter on a node stuck in a pending state

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • Vscan

Issue

A persistent value is observed in the scan_request_pending counter for a specific off-box Vscan instance, even when active scanning is functioning and no new scan requests are pending, as below

Cluster1::> statistics show-periodic -instance <svm_name> -interval 1 -iterations 10 -summary true -object offbox_vscan -counter connections_active|scan_latency|scan_request_dispatched|scan_request_pending|scan_request_timedout
Cluster1: offbox_vscan.<svm_name>: 6/29/2026 07:57:07
                           scan     scan    scan
connections     scan request  request request    Complete    Number of
     active latency dispatched  pending timedout Aggregation Constituents
----------- -------- ---------- -------- -------- ----------- ------------
          7  45912us          1       35       0      Yes      2
          7      0us          0       35       0      Yes      2
          7  39958us          2       35       0      Yes      2
          7      0us          0       35       0      Yes      2
          7  14415us          2       35       0      Yes      2
          7      0us          0       35       0      Yes      2
          7  14999us          6       35       0      Yes      2
          7      0us          0       35       0      Yes      2
          7      0us          0       35       0      Yes      2
          7      0us          0       35       0      Yes      2

Multiple remediation attempts, including the following, do not clear the pending count:

  • Restarting the Vscan engine on all antivirus servers
  • Disabling and re-enabling vscan
  • Performing a vscan reset

Despite these actions, the scan_request_pending counter continues to display the same value.

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