Data Corrupt During Cloning VM

[Chilledheart]

hi all

we are testing esxi 6.5 in our lab and find data corruption during cloning vm.

the vm is installed in linux nfs client firstly and then clone/migrate to another datastore which esxi installed.

At last, it fails to start up due to data corrupt.

we try linux and windows at this time and find there is unwanted data in targeted flat vmdk file which should be zeroed.

the datastore is on a satadom which is like this:

please let me know if anything can help you. thanks in advance

[continuum]

What you describe here is the expected behaviour in the following case:
source flat.vmdk has been created as lazy zeroed thick provisioned and is stored on a VMFS-volume.
I do not understand your exact setup so please provide more data.
If you use dd against flat.vmdks keep in mind that the results will differ depending on the current state of the VM.
Using dd is not the preferred way to clone vmdks - dd should be only used if vmkfstools -i fails.