Listing all connected clients to a volume?

[ACHOU_SIMG]

ONTAP 9.1RC1

Hi,

This probably has been discussed many times but I am trying to get an authorative answer as to whether ONTA 9.x has a way to show which NFS clients are currently mounting to a particular volume. NetApp support just told me there is no way to do so but I am hoping it's not true so I turn to this community to see if anyone out there has a better idea. This should be something very doable and every enterprise storage solution should have it.

Thanks,

[sgrant]

Hi, unfortunately I believe Support are correct. I think you need a combination of the statistics top client and statistics top file commands. Cheers.

[davidrnexon]

Hi Achou, is there just one type of server OS mounting to an NFS export ? i.e. if it's VMware I would use powercli to search through my hosts and see which ESXi hosts are mounted to that namespace/volume

I think using statistics top file show - will be your best bet, however you need to specify -max 10 (Change 10 to the amount of hosts you have in your environment, I think max is 100 for this value) 

The sort-key switch will sort on volume

::> statistics top file show -sort-key volume -max 10

[ACHOU_SIMG]

Hi David,

Thanks for the suggestion. However, even in diag when I tried it, there is no 'volume' sort key:

::*> statistics top file show -sort-key
    read_ops   write_ops  other_ops  total_ops  read_data  write_data
    total_data

::*> statistics top file show -sort-key volume -max 10

Error: command failed: Unsupported sort-key counter: only "selector" counters are valid for statistically tracked
       objects. For a list of valid sort-key counters, use this diagnostic command: "statistics catalog counter show
       -object top_file -properties *selector*"

::*> statistics catalog counter show -object top_file -properties *selector*

Object: top_file
    Counter                     Description
    --------------------------- ----------------------------------------------
    other_ops                   Estimated Other Operations
    read_data                   Estimated Bytes From Read Operations
    read_ops                    Estimated Read Operations
    total_data                  Estimated Total Bytes From All Operations
    total_ops                   Estimated Total Operations
    write_data                  Estimated Bytes From Write Operations
    write_ops                   Estimated Write Operations
7 entries were displayed.

Thanks,

[davidrnexon]

Hi,

Sorry I think I wrote that reply late at night 🙂

If you use the command:

::> statistics top file show -sort-key total_ops -max 100

Then copy that table to excel and use the sort feature in there for volumes.

[ACHOU_SIMG]

Hi David,

Thanks but could you let me know what version of ONTAP you used?

I only get the following output fields even in diag mode. There is no client information in the output.

::*> statistics top file show -sort-key total_ops -max 20

filer01 : 6/5/2017 16:50:11
*Estimated
     Total
      IOPS       Node  Vserver             Aggregate Volume File
---------- ---------- -------- --------------------- ------ ---------------------------------------------------------------------------

Thanks,

[Rajes]

Any solutions  to see the hosts ?