3 Replies Latest reply on May 18, 2015 2:52 AM by chineek

    VADP-triggered snapshot-commit could produce data corruption when using ESXi 6?

    joergriether Hot Shot
    vExpert

      Hi,

       

      the last days I discovered something in many forums and blog posts around the world which makes me really worried. It seems that with ESXi 6.0 and VADP (especially CBT) there might be a major and very disastrous bug. VMware covers it here VMware KB: Backing up a virtual machine with Change Block Tracking (CBT) enabled fails after upgrading to or install…

       

      Problem is, they are only talking about a CBT issue which produces some errors. They are *not* talking about potential data corruption. And I am talking about the running production VM from where the snapshot was taken.

       

      Now - when looking at posts like this here: ESXi 6.0 CBT issue | view topic (there are many more on the net) I am wondering if somehow the snapshot commit operation in ESXi 6 is producing data corruption. Maybe it is only the VADP-triggered snapshot commit and (again) maybe there is more - some posts could even suggest that a partially snapshot rollback is accidentally triggered instead of a snapshot commit.

       

      So - from my point of view - these problems are extremely serious and maybe disastrous. If VMware is aware of anything like this I would highly recommend to set a global letter to all customers, at the least to update the knowledge base article.

       

      Is there any news around here in the forum?

       

      Best regards,

      Joerg