Error appears After virtual disk is resized. RPO Violation : A replication error occurred at the vSphere Replication server for replication <ID> New capacity is not greater than original capacity; Extending disks.

Products

• VMware Live Recovery

Issue/Introduction

RPO Violation error message appears after VM virtual disk is resized, stating "New capacity is not greater than original capacity"

<VMNAME>   [Error (RPO Violation]:
      "A replication error occurred at the vSphere Replication Server for replication '############'. Details: 'Error for (datastoreUUID: "vsan:#############################"), (pathname: "########-####-####-####-#############/hbrdisk.RDID-###########-=####-####-####-##########################-extend.vmdk"): New capacity (2566914048) is not greater than original capacity (10737418240); Extending disks'."

 

Environment

VMware vSphere ESXi 8.0.3x
vSphere Replication 9.0.x

 

Cause

This issue can occur when the disk of the source virtual machine has been resized to a value that is not a multiple of 1 kilobyte. The Host-Based Replication service requires a virtual machine's disk to be rounded up to a 1 kilobyte sector size boundary in order to be replicated. 

From the /var/run/log/vmkernel.log

####-##-##T02:33:47.060Z Wa(180) vmkwarning: cpu102:30489805)WARNING: Hbr: 5362: Failed to establish connection to [###.#.#.#]:32032 (groupID=GID-d63032a0-7d72-4982-b81c-d81a46628746): The set of disks on the replication server doesn't match

• It appears the VM disk resized and the disk size configured in replication does not match.

Resolution

To resolve this issue, resize the source virtual machine's disk while ensuring that the new size is a multiple of the required 1 kilobyte sector size.

Using the error and disk size numbers above as an example:

Source disk New capacity (2566914048) bytes

This is not a multiple of 1024:

2566914048 ÷ 1024 = 2506638.328125
That fractional result confirms misalignment.

Recommended Aligned Size:

To fix this, round up to the next whole multiple of 1024:

AlignedSize = (2566914048 / 1024) * 1024
            = 2506639 * 1024
            = 2566914560 bytes

So the corrected disk size of the virtual disk should be: 2566914560 bytes (2.39 GB)