The always useful Veeam support digest is reporting that at the very least Veeam is seeing issues with Change Block Tracking (CBT) caused by vSphere 6.0 Express Patch 6. This build was released on May 12th of this year. It is the current build according to VMware’s build number KB article.
Veeam is reporting they’re seeing the issue if you’re not using application aware processing and using VMware Tools quiescence on your Veeam jobs.
Other blog articles are mentioning other backup products also impacted, including VMware Data Protection and IBM TSM. It’s safe to assume this will broadly impact all VMware centered backup products.
If you’re using Express Patch 6, you currently have two options:
- Roll back to ESXi 6.0 Update 2.
- Don’t use quiesced snapshots.
Heads up!