VMware recently posted a new KB article 2136854 to advertise the issue. Which is great that this has finally been accepted and advertised to customers and partners.
It’s important to know this is not the same one as posted recently also for ESXi 6.0 (KB 2114076) – now fixed in a re-issued build of ESXi 6.0 (Build 2715440)
But it is very similar to KB 2090639 from a historical perspective.
If you are leveraging a product that uses VMware’s VADP for backup, then chances are you are leveraging this for not just initial fulls, but regular incremental snapshots (for backup purposes). There are numerous products on the market that leverage this API, it’s virtually the industry standard to use this feature as it results in faster backups.
When the incremental changes are being requested through the API (QueryDiskChangedAreas) the API is requested changed blocks, but unfortunately some of the changed blocks aren’t…