Avamar+DD2500 備份VMDK失敗

Unable to perform VMware client Image backups and they are failing with Code 10056.

The Snapshot create task fails with the following errors:

Issue #1

avvcbimage Warning <16002>: Too many extra snapshot files (3) were found on the VMs datastore. This can cause a problem for the backup or restore.

avvcbimage FATAL <16018>: The datastore information from VMX '[MLUN] Datastore/TestMachine.vmx' will not permit a restore or backup.

avvcbimage Info <0000>: Starting graceful (staged) termination, Too many pre-existing snapshots on the datastore will not permit a restore or backup. (wrap-up stage)

avvcbimage Error <9759>: createSnapshot: snapshot creation failed

However, there are Snapshot files on the Datastore:

2015-02-20 13:47:23 avvcbimage Info <14665>: 30 snapshots are present on this VM:
   level=1, children=1, ref='snapshot-4223', 'snapshot1':desc='na'
   ...
     *level=30, children=0, ref='snapshot-4252', 'snapshot30':desc='na
​2015-02-20 13:47:23 avvcbimage FATAL <0000>: [IMG0019] The pre-existing snapshots from VMX '[MLUN] Datastore/TestMachine.vmx does not permit a backup.

Before removing the files there are some checks that must be completed.

1. Ensure the Virtual Machines are not currently using the snapshot file in question.

• This can be done by looking into the virtual machines Settings > Hardware tab > select each disk and make sure the "Disk file" is not allocated to a Snapshot file. (Snapshots will have a suffix named of -00000#.vmdk

2. Make sure the Avamar proxies does not have the disk attached to them.

• In vCenter select a proxy and navigate to the Settings > Hardware tab
• Each proxy should have two disks, any additional should be removed
• To remove an extra disk, select the disk and click "Remove" and leave the "Removal Options" selection to "Remove from Virtual Machine"
• This may be done by EMC TSE Using Proxycp utility using the "--listproxydisk --cleanup" options.

3. Run a Snapshot Consolidation (ESX / vCenter 5.x and above)

• In vCenter navigate to the Virtual Machine, then in the tool bar  select > Inventory > Virtual Machine > Snapshot > Consolidate
• For vCenter 4.x you may take a snapshot of the Virtual Machine, Then go back to Snapshot Manager and select "Delete All" (Warning: This deletes all Snapshot even if they are user created, make sure you do not mind losing your current valid snapshots)
• Manually remove the Snapshots if the Consolidate does not work - Do not perform this if there are other valid user Snapshots Or if the VM disks are currently using any Snapshot file.
  • Navigate to the Datastore directory of the Virtual Machine
  • Create a new Folder in the VM Directory Called "SS Removal"
  • Drag and drop the offending snapshot files into the new directory created above.

4. Inspect the Datastore directory for the Virtual Machine in question and verify the Snapshot files still exist.
5. One removed perform a backup.
6. If the issue is not resolved please contact EMC Technical Support.

For Issue #2. 
In VMware, delete the existing Snapshot. VMware does not recommend using Snapshots as your only  backup strategy (For example: use product like Avamar ). Have more than a small set of short term Snapshots that introduces latency and high stun times during Snapshot operations.Ideally a VM should not have Snapshot.