[DOCS-14041] [OM] Restore Timestamp can be off for customers performing manual restores on a different MongoDB version than the one snapshotted. Created: 10/Dec/20  Updated: 29/Oct/23  Resolved: 08/Jan/21

Status: Closed
Project: Documentation
Component/s: Ops Manager
Affects Version/s: None
Fix Version/s: None

Type: Improvement Priority: Minor - P4
Reporter: Steven Connors (Inactive) Assignee: Anthony Sansone (Inactive)
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Participants:
Days since reply: 3 years, 4 weeks ago
Epic Link: DOCSP-3127
Story Points: 2

 Description   

Description

https://docs.opsmanager.mongodb.com/current/tutorial/restore-replica-set/#set-the-restore-point-to-the-restore-timestamp-value-from-the-restoreinfo-file

In the above page, we want the customer to take note of the "Restore Timestamp" value in the restoreInfo.txt. This Restore Timestamp is computed with respect to the MongoDB version of when the snapshot was taken. So, if we have a customer who is attempting to restore a Snapshot which was taken on MongoDB 4.2, but when they're performing these manual restore steps, the mongod binary they're using is MongoDB 4.4, the restored data may contain unnecessary oplog documents, which can be an issue if the customer is performing PIT restores.

Note that this only occurs in this scenario of Snapshot was taken on 4.2, but the restoring binary is on 4.4. In future version (eg Snapshot on 4.4, binary on 4.6), this wouldn't occur.

We would like to add a small note in the above link (as well as the Cloud Manager Equivalent) that if a customer has a mismatch in versions, they should decrement the restore timestamp by 1, or that they should stick to using the same mongodb version.

Marking this ticket as a "Minor", since we don't expect customers to perform Manual Restores, but also because this only occurs when a customer performs a Manual Restore with a different MongoDB version than that of the Snapshot's.

Scope of changes

Impact to Other Docs

MVP (Work and Date)

Resources (Scope or Design Docs, Invision, etc.)



 Comments   
Comment by Githook User [ 13/Jan/21 ]

Author:

{'name': 'Anthony Sansone', 'email': 'tony.sansone@mongodb.com', 'username': 'atsansone'}

Message: (DOCSP-13946) Backport DOCS-14041 to v4.4 (#3519)
Branch: v4.4
https://github.com/10gen/mms-docs/commit/4d0372aced95562a7334ad35e692506a7fda9b61

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