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The NFS-mounted volume became invisible from VMware ESXi

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Category:
ontap-9
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nas
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Applies to

  • ONTAP 9.8 or later
  • VMware vSphere ESXi 7.0U1, 7.0U2,8.0

Issue

  • EMS reports nblade.execsOverLimit errors which point out IP address for ESXi hosts.
  • Errors observed in VMWare logs:

SunRPC: 4727: Socket space full. rpc queued. 0xed73346a
WARNING: NFS: 5015: NFS volume volume1 performance has deteriorated. I/O latency increased from average value of 3352(us) to 109867(us).
NFS: 4971: NFS volume volume1 performance has improved. I/O latency reduced from 109867(us) to 21955(us).

  • vobd.log shows the All Path Down (APD) event

[vmfsCorrelator] 65758735896396us: [vob.vmfs.nfs.server.disconnect] Lost connection to the server 1.2.3.4 mount point /datastore, mounted as 651fb76f-6d318d68-0000-000000000000 ("nfs_datastore")
[vmfsCorrelator] 65759457445021us: [esx.problem.vmfs.nfs.server.disconnect] 1.2.3.4/datastore 651fb76f-6d318d68-0000-000000000000 nfs_datastore
[APDCorrelator] 65758778806479us: [vob.storage.apd.exit] Device or filesystem with identifier [651fb76f-6d318d68] has exited the All Paths Down state.

  • The NFS-mounted volume became invisible from VMware ESXi.

 

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