So I'm looking at files on my ZFS volume that are compressed, and I'm
wondering to myself, "self, are the values shown here the size on disk, or
are they the pre-compressed values".  Google gives me no great results on
the first few pages, so I headed here.

This really relates to my VMware environment.  I had some "things" happen on
my platform that required me to Storage Vmotion everything off of a
particular zpool.  When I did that, I saw most VM's inflate to nearly their
thick provisioned size.  What didn't swell to that size went to about 2/3
provisioned (non-Nexenta storage).

I have been seeing 1.3-1.5x compression ratios on pretty much everything I
turn compression on for (these are general use VM's -

My question is this - when I'm looking in the file structure, or in the
datastore browser in VMware, am I seeing the uncompressed file size, or the
compressed filesize?

My gut tells me that since they inflated _so_ badly when I storage vmotioned
them, that they are the compressed values, but I would love to know for

-Matt Breitbach

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