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I'm using ESXi 6.0.0, and come up with a question. How does ViClient/ESXi know if a thick vmdk is lazy zeroed or eager zeroed? I checked the .vmdk content(several hundred bytes) from command-line shell and cannot identify a field that describes such difference.

vmdk content compare

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I think the flag is not related to the disk image itself, rather it is a VM property.

After all, for the filesystem both files (lazy & eager zeroed) are absolutely the same; on the other hand, for the VM (and the disk management console) the two files should be treated differently.

  • Then i'd like to know where this information is stored(so that I can manually convert a eager one to a lazy one). I checked .vmx, of course it is not there. – Jimm Chen Apr 27 '16 at 9:24
  • The parameters should be named EagerlyScrub. You can't find any reference for it? – shodanshok Apr 27 '16 at 9:53
  • From /vmfs/volumes I execute find -name '*.vmx' | xargs grep -i eager but get nothing. Can you be explit what file holds that information? – Jimm Chen Apr 28 '16 at 0:39
  • I though it was in the vmx file, sorry... – shodanshok Apr 28 '16 at 7:28

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