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Snapshot Size on Storage Is Significantly Larger Than Original Linux File Server After Backup

Snapshot Size on Storage Is Significantly Larger Than Original Linux File Server After Backup

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Problem description

After performing a Linux File Server backup, you may notice that the snapshot size on storage is significantly larger (sometimes over 10×) than the actual size of the data on the Linux File Server.

Cause

This issue occurs when default folder and file exclusions are removed from the content rule configuration.

On Linux systems, directories such as /proc, /sys, and /selinux are dynamic or in-memory file systems. Including them in the backup can create recursive or infinite loops, causing the backup size to grow abnormally.

Resolution

To correct this issue:

  1. Re-add the default folder and file exclusions to the Content Rule.

  2. Run a new backup after making these changes.

Default Exclusions

.snapshot

/dev

/etc/Phoenix

/etc/Druva

/proc

/selinux

/sys

/tmp

/var/Phoenix

/var/log/Druva

Note: Default exclusion paths can vary depending on the Phoenix Agent version. Refer to the appropriate list below before updating your configuration.

Phoenix Agent 6.3.x

/var/Phoenix

/etc/Phoenix

Phoenix Agent 7.0.x

/etc/Druva

/var/log/Druva

Post-Fix Cleanup

After adding the correct exclusions and running a successful backup, you should remove previous snapshots (restore points) that were created when the exclusions were missing, as they will continue to occupy unnecessary space on storage.

Steps to Delete VMware Virtual Machine Snapshots

  1. Log in to the Druva Management Console.

  2. Navigate to Products & Services > Phoenix > VMware.

  3. Select your organization (if organizations are enabled).

  4. From the vCenter/ESXi host page, select the appropriate vCenter or ESXi host from the list or the left navigation pane.

  5. Click Configured VMs.

  6. Select the virtual machine associated with the snapshots.

  7. Go to the Backups tab.

  8. Select the snapshot (restore point) you want to delete.

  9. Click the Delete button at the top-right corner of the console.

Additional Information

For detailed instructions on deleting VMware virtual machine recovery points, refer to:

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