This shows the filesize to be zero, which is what we were expecting from an, as yet unused, thin provisioned disk.
Running ls -la can be misleading as it reports the new disks size as being its maximum possible size, in this case 5GB:īut we can confirm the files actual size on disk, and therefore confirm that it is thin provisioned by running du -ah. To create a thin provisioned virtual disk we need to use the diskformat option, vmkfstools -c 5G –diskformat thin testdisk2.vmdk. To create a virtual disk we can run vmkfstools -c 2048m testdisk1.vmdkĪs a result, we end up with 2 files – the virtual disk descriptor file, and the virtual disk itself:īy default this will create a thick disk using a Bus Logic virtual adapter. Running vmkfstools at the cli prompt will display the options available to us: Here I’ll be concentrating on looking at what we can do with virtual disks. It will allow you to perform operations against both the file system and the virtual disk files. Simply put, vmkfstools is a vSphere cli tool for managing VMFS volumes. With that in mind I thought I’d document some examples of what vmkfstools can do here, so I’ll have something to refer back to. Please message the moderators and we'll pull it back in.VMFSTOOLS is something I perhaps don’t use as regularly as I’d like and as a result find myself having to refer to the documentation pretty much anytime I do anything with it.
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