2017-04-11 01:55 PM
I read that SVM-DR relations can preserve volume MSIDs which allows NFS file handles to remain valid in a disaster recovery scenario without the need to re-mount. I tested this with a AFFA300 running 9.1P1 and RHEL VM using NFSv3. Confirmed the msid-preserve is set to true. Performed a SVM DR failover from one site to another site the unix mount froze and was not able to recover unless a lazy unmount was performed. Is there mount options that need to be added or is this only for NFSv4?
Solved! SEE THE SOLUTION
2017-04-11 11:21 PM
If you've moved the SVM/Cluster from 8.3 to 9, the SVM DR relationship by default will not preserve MSIDs. New relationships created under 9.0 will however.
We have instructions for upgrading the DR relationship in the first case, as well as general troubleshooting at https://kb.netapp.com/support/s/article/ka31A0000000jXPQAY/how-to-preserve-nfs-file-handles-and-volume-msids-with-svm-dr-vserver-disaster-recovery?lan...
Please let me know if this helps!
2017-04-26 08:03 AM
No, DR SVM is using different IP. The VLAN is not stretched. After DR cutover all IPs are reachable and DNS of SVM was manually changed to point to DR LIF. Mount still hung doing a ls command.