VMware vddk 5.5 will address "Failed to get changed disk area, issues with CBT and quiescing"
The Current NetVault VMWARE Plugin 2.6.5 still uses the vddk version 5.1
This version of the VMWARE vddk still have many problems that causes NetVault VMWARE Backup jobs to fail with problems such as:
"Failed to get changed disk area, issues with CBT and quiescing".
Here is a List of KB that address most of those issues:
The new vddk version 5.5 addresses most of the problems encountered by previous vddk versions.
Our engineering is working on a new version of the NetVault VMWARE Plugin that will make use of the new vddk version 5.5
We expect most of the problems encountered with the VMWARE plugin being resolved when the Plugin makes use of the new vddk 5.5
Please see the VDDK 5.5 Release Notes to find out all of the new features and fixes that this new VDDK will bring:
https://www.vmware.com/support/developer/vddk/vddk-550-releasenotes.html
following 64-bit operating systems to perform proxy backup:
Windows Server 2003 R2, 2008(R2) and 2012
Red Hat Enterprise Linux RHEL 5.9, 6.2, and 6.3.
SUSE Linux Enterprise Server SLES 10.4, 11.1, and 11.2.
- With vddk 5.5, virtual machine disks can be larger than 2TB (two terabytes). The > 2TB virtual disk must reside on a VMFS-5 partition, not on VMFS-3 or NFS storage.
- Memory allocation algorithms were changed to prevent backup application exiting unexpectedly or crashing during SAN restore on a physical proxy if any of its disks had 29 or more partitions.
- Fixed the issue causing he error The message is “Error 13 - You do not have access rights to this file.”, when the backup application was retrieving metadata before a disk gets HotAdded.
-Implemented TCP timeouts for NBD transport to avoid failure when attempting to open a disk when already using NBD transport.
- CBT state now is maintained after cold relocation of VMs when performing VM cold relocation (virtual machine powered off).
- Prevent HotAdding virtual disk to back up the proxy itself that used to result in left-over virtual disk. This disk could not be removed.
- Application level quiesced snapshots are now used to back up powered-on VMs running Windows Server 2003, 2008, 2008 R2, and 2012 to avoiding previous problem with areas returned representing a larger amount of changes than the actual amount of changes.
- Fixed race condition while loading or unloading libraries that used to cause Windows Process to hang.
- This version can now backup Virtual Machines with more than 27 snapshots.
- Reduced the size for large thin-provisioned virtual disks (> 200GB). This version now backs up only the in-use areas of thin-provisioned disk, even if the number of ioctl calls exceeds the hardcoded limit for ioctl calls.
