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How much space is actually left...
https://www.3parug.com/viewtopic.php?f=18&t=767		 Page 1 of 1
Author:  corge [ Wed Jun 11, 2014 11:52 am ]
Post subject:  How much space is actually left...
So, I'm starting this post because we get a lot of alerts showing volumes are nearly full, but the upon looking, it doesn't appear so.

I'm going to give an example.

In the 3PAR Console, I see our storage systems, and currently, on the FC section, I show it to be
90% allocated (picture1).

Clicking directly on the InServ, under summary, I see the same reporting. (picture2)

Now, if I go the the InServ, Provisioning menu and then click on Virtual Volumes, I show virtual size is 25TB and Reserved User Size is 16TB, meaning here that I still have about 9TB free. (picture3)

So my question is really.....how much do we actually have and why are the numbers reporting so differently?

We use thin provisioning in almost everything we have.

Attachments:
picture1.jpg
picture1.jpg [ 10.02 KiB | Viewed 20530 times ]
picture2.jpg
picture2.jpg [ 34.68 KiB | Viewed 20530 times ]
picture3.jpg
picture3.jpg [ 13.85 KiB | Viewed 20530 times ]
Author:  Davidkn [ Wed Jun 11, 2014 2:31 pm ]
Post subject:  Re: How much space is actually left...
Do you have a copy space column containing any virtual copies?

Kind of need a wider view of the screen shots.

Also maybe try compacting the cpg?
Author:  trireed [ Wed Jun 11, 2014 5:05 pm ]
Post subject:  Re: How much space is actually left...
What it seems you are looking at that shows 9TB free is a combination of all drive types, the screen shot showing just 2TB is FC only.

From CLI:

showsys -space -devtype NL

showsys -space -devtype FC

or to get the entire picture

showsys -space


Thanks
Author:  Davidkn [ Wed Jun 11, 2014 5:47 pm ]
Post subject:  Re: How much space is actually left...
Good point!

More info is needed :)
Author:  gkapoor [ Wed Jun 18, 2014 4:11 am ]
Post subject:  Re: How much space is actually left...
You can also use

showspace -t r5 (It could be r1, r6 -- depending what you are using).

to get more details.

showspace -t r5 -ssz 4 (-ssz = setsize )
Author:  RitonLaBevue [ Fri Jun 27, 2014 3:49 pm ]
Post subject:  Re: How much space is actually left...
Depending on the array, mentionning device type et ha could be a good idea...

showspace -p -devtype FC -t r5 -ssz 6 -ha mag
ha cage is default
for raid 5, setsize 4 is default
default raid is raid 1
Author:  trarun0483 [ Thu Nov 27, 2014 2:06 pm ]
Post subject:  Re: How much space is actually left...
Hi Please use below command first to get the parameters used for CPG

showcpg -sdg
NL_SS6 - - 32768 -t r5 -ha mag -p -devtype NL -rpm 7

then use below to see what is actual available raw and usable space

showspace -t r5 -ha mag -p -devtype NL -rpm 7
--Estimated(MB)---
RawFree UsableFree
6011904 4508928
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