PowerFlex: QueryChangedDiskAreas API Returns Incorrect Sectors

Samenvatting: QueryChangedDiskAreas API returns incorrect sectors after extending virtual machine VMDK file with Changed Block Tracking (CBT) enabled in ESXi 8.0u2.

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Symptomen

CBT's QueryChangedDiskAreas may lose some data changed on the disk after disk is hot-extended. It happens on ESXi 8.0u2 and VMC 1.24.1.

 

Oorzaak

There is an issue in the QueryChangedDisk Areas API.

 

Oplossing

In order to resolve this issue, update to ESXi 8.0 Update 2b or newer.

Workaround

  1. Reset CBT after disk is hot-extended. Then, the user must take a full backup immediately.
    It does not fix existing backups, but it ensures that the new ones are good. Follow these steps to reset CBT Resetting Changed Block Tracking for VMware vSphere virtual machines (External Link)

  2. Or, the user extends the disk in offline.

 

Extra informatie

This is a duplicate article of VMware Article:QueryChangedDiskAreas API returns incorrect sectors after extending virtual machine VMDK file with Changed Block Tracking (CBT) enabled in ESXi 8.0u2 (External Link)

 

Getroffen producten

VxBlock and Vblock Systems, PowerFlex rack, PowerFlex Appliance, PowerFlex custom node
Artikeleigenschappen
Artikelnummer: 000223945
Artikeltype: Solution
Laatst aangepast: 30 dec. 2025
Versie:  2
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