Loss of NFS Access and Ping Working Sporadicaly ( Intermittently ) to VNIC on an AGGR ( LACP ) Interface After Upgrade of ZFSSA
(Doc ID 2718844.1)
Last updated on OCTOBER 13, 2020
Applies to:
Oracle ZFS Storage ZS7-2 High End - Version All Versions to All Versions [Release All Releases]Oracle ZFS Storage ZS7-2 Mid-Range TAA Compliant - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS7-2 High End TAA Compliant - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage Appliance Racked System ZS7-2 Mid-Range - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage Appliance Racked System ZS7-2 High-End - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.
Symptoms
This problem was encountered during a ZFSSA ( zfs storage appliance ) software upgrade , but could occur whenever ZFSSA cluster heads are rebooted If the VNICS have duplicate MAC addresses.
The network configuration consisted of each head configured with an AGGR datalink created from two I40E ports . Then on each AGGR a VNIC datalink was created with two IP addresses each.
After reboot NFS clients lost access.
"status show" indicated zero nfs iops.
Using ping as a test, we saw inconsistent results. Even though the two IP addresses shared the same VNIC , one IP address would work
and the other would not work or worked sporadically. Then at times the roles would reverse, or they both worked .
We also would see occasional (DUP) alerts in the Ping output .
Changes
This had been encountered during an upgrade from OS8.8.20 to OS8.8.22, but may be seen when there is a duplicate MAC address and ZFSSA heads are rebooted.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |