move-vm doesn't convert the diskstorageformat of all virtual disks

[TheVMinator]

I'm using move-vm to storage vMotion VMs.  It is converting some of the virtual disks of a virtual machine, but not all of them.  For example, if a VM has 3 virtual disks, after the vmotion using

move-vm -datastore destinationdatastore -diskstorageformat thin

2 of the virtual disks are thin, and one is thick.  Any ideas why this is?

Thanks

[LucD · Accepted solution]

Could it be that the 3th VMDK weas already on the destination datastore?

In that case there will be no Thick-Thin conversion.

Is your destination datastore a datastore or a datastorecluster?
There used to be some issues with converting Thick to Thin when the destination was a datastorecluster.

Did you have a look in the vpxd log?

There might be some clues in there

[TheVMinator]

not sure - i'm wondering if these are swap files stored on a special swap file datastore and therefore don't get migrated so they stay thick - I checked none of the things that you mentioned are the cause - thanks for the input