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Exchange Backup fails on Certain DBs after Upgrading to NMM9
Need some advice here.
We have one DAGs that worked fine previously on NMM8.2.4.11. After I upgrade to NMM 9.2.1.3, the backup fails on specific databases with the below error. The DAG consists of 24 DBs. There are 2 DBs which failed to backup. Backup is via the Data Domain with BBB enabled.
When the backup is kicked off, those database will be seeing the session but always in idle state . The rest of the DBs will backup withpit any issue.
Backup Server is still remain an NW8.2.4.12 at the moment.
"ddp_fstat () failed, Err: 5057-nfs getattr failed ( nfs : Stale file handle)
CarlosRojas
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September 25th, 2018 05:00
Hi wilsontan
Do you plan to upgrade NW server soon?
If not, would be possiblt to downgrade NMM to the same version as NW server?
As you may know, it is not recommended to use more recent modules than the actual NetWorker server version.
Thank you,
Carlos
Anonymous
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September 25th, 2018 06:00
correction. Downgrading to NMM8.2.4.11
Anonymous
274.2K Posts
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September 25th, 2018 06:00
Yes, i have downgraded to NMM8.4.4.11 which is the latest version for NMM8.2.4 family.
The problem is this NMM version also has the known bug issue that the EMC engineering team is aware of and they don't plan to come out the new release as NMM8 is EOL soon.
• [NetWorker] Escalation 31951 - ]NMM Exchange] Intermittent hang of nsrbragent and nsrsnapbwragent. Backups succeed, but savegrp in running state.
• [NetWorker] Escalation 25732 - Intermittent nsrbragent hang causing savegrp to not complete. Backups are successful
• Bug 249747 - esc 24521:nsrsnapbwragent intermittently hangs after successful backup. Ref 222186/189256/21945
EMC support has pointed me this on the compatibility matrix.
Refer to below from compatibility guide: "This is applicable only for NMM. NMM Clients 9.0.1 and above are compatible with NW Server 8.2.3 and above. NetWorker 9.x Clients and other NetWorker 9.x Modules are not supported with NetWorker Server versions prior to 9.x"
I have anther few DAGs which are on NMM9 and backup without any issue.