Host-based backup of VMware vSphere VMs.
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Baldy27
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Changed Block Tracking

Post by Baldy27 »

Hi,

When i am processing a backup i get the error "Changed Block tracking can not be enabled, one or more snapshots preset."

Only 1 VM from 11 in that batch has this issue.

Any ideas?

Thanks
foggy
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Re: Changed Block Tracking

Post by foggy »

Chris, does this VM have any existing snapshots? If yes, you need to consolidate it to enable CBT.
Baldy27
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Re: Changed Block Tracking

Post by Baldy27 »

Sorry im now to Veeam, where would the existing snapshots be located?
foggy
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Re: Changed Block Tracking

Post by foggy » 1 person likes this post

Right-click the VM in vSphere client and open Snapshot Manager to view existing snapshots.
Baldy27
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Re: Changed Block Tracking

Post by Baldy27 »

Nice one, i've consolidated them, just going to rerun the. Job
Baldy27
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Re: Changed Block Tracking

Post by Baldy27 »

Consolidated the Snapshots but still get the same error
Baldy27
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Re: Changed Block Tracking

Post by Baldy27 »

Deleted totally now, re running :)
Baldy27
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Re: Changed Block Tracking

Post by Baldy27 »

Thanks for the advise, this worked perfect.

Quick question ...

If a Snapshot is taken of the VM, then our backup runs and gives us the Warning "Changed Block tracking can not be enabled, one or more snapshots preset."

Does this mean a full backup of the VM was performed, therefore taking more space up on our server ?
veremin
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Re: Changed Block Tracking

Post by veremin » 1 person likes this post

Does this mean a full backup of the VM was performed, therefore taking more space up on our server ?
Nope, it only illustrates the fact that our own proprietary mechanism has been used to detect changes. Since it needs to scan a whole VM, backup time will be increased. Thanks.
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