#1 Global Leader in Data Resilience

Changes to eDirectory May Not Appear in File Level Restore for OES 2023 and later

KB ID: 4492
Product: Veeam Backup & Replication | 12.1 | 12.2
Published: 2023-12-05
Last Modified: 2023-12-05
mailbox
Get weekly article updates
By subscribing, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.

Cheers for trusting us with the spot in your mailbox!

Now you’re less likely to miss what’s been brewing in our knowledge base with this weekly digest

error icon

Oops! Something went wrong.

Please, try again later.

Challenge

When performing a Linux File Level Restore, using a helper appliance, to restore the database for eDirectory on OES 2023 and higher, the most recent state of the database found within the restore point lacks changes made just before the backup job ran.

Cause

This happens because the writes made by eDirectory to the underlying XFS filesystem are cached in memory before being written to disk, and the backup operation only captures data on the disk.

Solution

To resolve this issue, enable the Application-Aware Processing feature in the backup job for the Open Enterprise Server (OES) 2023 or later VM. Then, use a pre-freeze script to execute the sync command (see example below). This command will prompt the OS to immediately flush any cached writes to the disk. Implementing this as part of the pre-freeze ensures that the cached writes are on the disk when the backup job begins processing the VM's disk(s).

Example Pre-Freeze Sync Script

#!/bin/bash

sync

More Information

An alternative solution involves modifying the XFS filesystem settings to prompt the filesystem to flush changes to the disk more frequently. By default, this action is performed every 3000 centiseconds, which is the equivalent to 30 seconds. However, it can be configured to as low as 100 centiseconds, or 1 second. It's important to note that increasing the frequency of flushing changes to the disk may negatively impact performance, depending on the capabilities of the underlying storage system. For additional details, please refer to the XFS documentation for the setting: fs.xfs.xfssyncd_centisecs
To submit feedback regarding this article, please click this link: Send Article Feedback
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.

Spelling error in text

This site is protected by hCaptcha and its Privacy Policy and Terms of Service apply except as noted in our Privacy Policy.
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

Oops! Something went wrong.

Please, try again later.

You have selected too large block!

Please try select less.

KB Feedback/Suggestion

This form is only for KB Feedback/Suggestions, if you need help with the software open a support case

By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.
This site is protected by hCaptcha and its Privacy Policy and Terms of Service apply except as noted in our Privacy Policy.
Verify your email to continue your product download
We've sent a verification code to:
  • Incorrect verification code. Please try again.
An email with a verification code was just sent to
Didn't receive the code? Click to resend in sec
Didn't receive the code? Click to resend
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

error icon

Oops! Something went wrong.

Please, try again later.