VMware Solutions Discussions

System Manager show that the LUN size is full.

TOBIAS1979

Hi

I have a LUN that System Manger 2.0 show as 100.39% used. But when I look into the Disk Manager on the server I have 17.6GB free of 50GB how is that possible?

Rgds

Tobias

1 ACCEPTED SOLUTION

aborzenkov

OK, it probably displays what is known as “Occupied size” in CLI.

Once host writes block on LUN, block is allocated on NetApp and remains allocated for this LUN. If host now marks block as “free” block remains allocated for LUN from NetApp point of view. There is limited support for “space reclamation”, where host can tell NetApp to free unused blocks. On Windows you need SnapDrive to do it.

View solution in original post

7 REPLIES 7

aborzenkov

You probably mean “volume”. System Manager has no way to know how full LUN is.

Showing output of “df -k” and “df -r” would be helpful.

TOBIAS1979

Hi

No, I ment the LUN. It look like this, i ám a bit confused???

aborzenkov

OK, it probably displays what is known as “Occupied size” in CLI.

Once host writes block on LUN, block is allocated on NetApp and remains allocated for this LUN. If host now marks block as “free” block remains allocated for LUN from NetApp point of view. There is limited support for “space reclamation”, where host can tell NetApp to free unused blocks. On Windows you need SnapDrive to do it.

View solution in original post

TOBIAS1979

Is there any command so I can se the real size in the CLI?

aborzenkov

lun show -v and look for “Occupied size”. If it is no there, you have too old Data ONTAP version.

TOBIAS1979

thanks

Rgds

Tobias

lacherejc

Hello,

i have the same issue but i have

ontap 7.3.6p5

Lun mapped with iscsi to esx 4.1

Windows VM on datastore.

My df output

C2> df -hr /vol/c2_vm_prod1

Filesystem               total       used      avail   reserved  Mounted on

/vol/c2_vm_prod1/       2457GB     1313GB     1143GB        0KB

/vol/c2_vm_prod1/ /vol/c2_vm_prod1/.snapshot      614GB        0KB      614GB        0KB  /vol/c2_vm_prod1/.snapshot

C2> df -h /vol/c2_vm_prod1

Filesystem               total       used      avail capacity  Mounted on

/vol/c2_vm_prod1/       2457GB     1313GB     1143GB      53% 

/vol/c2_vm_prod1/ /vol/c2_vm_prod1/.snapshot      614GB        0KB      614GB       0%  /vol/c2_vm_prod1/.snapshot

So on my system manager i have :

have you got an idea ?

Thanks

JC

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