VMware ESXi 6.7 - Patch Release ESXi670-201912001 - Build 15160138

• PR 2423301: After you revert a virtual machine to a snapshot, change block tracking (CBT) data might be corrupted When reverting a virtual machine that has CBT enabled to a snapshot which is not a memory snapshot, and if you use the QueryChangedDiskAreas() API call, you might see an InvalidArgument error. This issue is resolved in this release. With ESXi670-201912001, the output of the QuerychangedDiskAreas () call changes to FileFault and adds the message Change tracking is not active on the disk <disk_path> to provide more details on the issue. With the fix, you must power on or reconfigure the virtual machine to enable CBT after reverting it to a snapshot and then take a snapshot to make a full backup. To reconfigure the virtual machine, you must complete the following steps:
  1. In the Managed Object Browser graphical interface, run ReconfigVM_Task by using an url such as https://<vc or host ip>/mob/?moid=<the virtual machine Managed Object ID>&method=reconfigure.
  2. In the <spec> tag, add <ChangeTrackingEnabled>true</ChangeTrackingEnabled>.
  3. Click Invoke Method.
• PR 2419339: ESXi hosts might fail with a purple diagnostic screen during power off or deletion of multiple virtual machines on a vSphere Virtual Volumes datastore ESXi hosts might fail with a purple diagnostic screen during power off or deletion of multiple virtual machines on a vSphere Virtual Volumes datastore. You see a message indicating a PF Exception 14 on the screen. This issue might affect multiple hosts. This issue is resolved in this release.
• PR 2432530: You cannot use a batch mode to unbind VMware vSphere Virtual Volumes ESXi670-201912001 implements the UnbindVirtualVolumes () method in batch mode to unbind VMware vSphere Virtual Volumes. Previously, unbinding took one connection per vSphere Virtual Volume. This sometimes led to consuming all available connections to a vStorage APIs for Storage Awareness (VASA) provider and delayed response from or completely failed other API calls. This issue is resolved in this release.
• PR 2385716: Virtual machines with Changed Block Tracking (CBT) enabled might report long waiting times during snapshot creation Virtual machines with CBT enabled might report long waiting times during snapshot creation due to the 8 KB buffer used for CBT file copying. With this fix, the buffer size is increased to 1 MB to overcome multiple reads and writes of a large CBT file copy, and reduce waiting time. This issue is resolved in this release.