Noob Q - How do you find the disk used information?

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AustinPowers

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Feb 21, 2013
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In my case, I have set up a ZFS FreeNAS with a 1TB drive for the purposed of experimentation.

But I am getting REALLY weird stats from the FreeNAS box - saying it has 3.1TB of free space on a 1TB drive - does not compute.......

a5n.gif


Add up the SIZE column.

...I don't get it.....

Even if you add up the AVAILABLE column, you end up with 2.85TB for a 1TB drive - What the F ?!???!!

All I really want, is an indication of how much space is left on the 1TB drive, but I can't find it. Can anyone help me understand this? It is probably a ZFS thing, and I am only familiar with Windows and NTFS, but even though - most Linux or Unix systems will still have a way to tell you how much space is used, and what is left, for any specific drive... :(
 

pirateghost

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Feb 29, 2012
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Looking at your screenshot it is REALLY simple to see how much space is left:
570.1 GB

Not sure why you think you should be adding up the Available column
 

AustinPowers

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Feb 21, 2013
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Where are you getting that from?

Even if I add up the USED column, it comes to 343.5GB, so 1000GB-343.5 = 656.5GB NOT 570.1GB, so I still don't understand where you got that figure from.

What's with the AVAILABLE and SIZE columns - I don't understand this, as they both add up to way more then the total available space on the disk - this is the bit that is really confusing me.

I added up the AVAILABLE column, as this is what it says is available, and I can tell just by looking at it, that this cannot be correct, as a simple glance at that column, says there is more space available, then there actually is on the drive that is installed.
 

pirateghost

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I'm not really sure why you are adding up the available column. It obviously lists all those datasets on one volume

Sent from my Galaxy Nexus
 
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