9.3 Reporting Graphs not showing any READs

[HeloJunkie]

I am running FreeNAS-9.3-STABLE-201504152200 on a Supermicro server:

Supermicro Superserver 5028R-E1CR12L
Supermicro X10SRH-CLN4F Motherboard
1 x Intel Xeon E5-2640 V3 8 Core 2.66GHz
4 x 16GB PC4-17000 DDR4 2133Mhz Registered ECC
12 x 4TB HGST HDN724040AL 7200RPM NAS SATA Hard Drives
LSI3008 SAS Controller - Flashed to IT Mode
LSI SAS3x28 SAS Expander
Dual 920 Watt Platinum Power Supplies
16GB USB3 Thumb Drive for booting
FreeNAS-9.3-STABLE-201504152200



I have a 10G connection between it and another server running Ubuntu 14.04LTS. I have an NFS share created on the Freenas box and mounted on the Linux box. I can move data back and forth with no problems or issues. The only think I see is that no matter which direction I am moving the traffic, the Freenas box is showing only Writes, never any reads.

For example, on the Linux box I issued this command:

Code:

dd if=/dev/zero of=/mount/plexnas_media/test.file

I let this run for just under 20 minutes and got this when I stopped it:

Code:

root@cinaplex:/mount# dd if=/dev/zero of=/mount/plexnas_media/test.file
1053283529+0 records in
1053283529+0 records out
539281166848 bytes (539 GB) copied, 1127.58 s, 478 MB/s

This resulted with a 500G file being created on my nas:

Code:

[root@plexnas] /mnt/vol1/media# ls -alh test.file
-rw-r--r--  1 root  wheel   502G Apr 27 09:10 test.file

And a pretty graph showing (as it should) that it was writing to the vol:

Shown from the network standpoint, it looks like this:

So now I want to try and read the same test.file from the NAS back over to the Linux server, so I issue this command:

Code:

dd if=/mount/plexnas_media/test.file of=/dev/null

Which results in this output once it has completed:

Code:

root@cinaplex:/mount# dd if=/mount/plexnas_media/test.file of=/dev/null
1053283529+0 records in
1053283529+0 records out
539281166848 bytes (539 GB) copied, 2077.21 s, 260 MB/s

The 10G interface is showing the NAS clearly transmitting data to the linux server:

But the drives are all showing that they are WRITING as opposed to READING:

No matter which direction I am sending traffic and no matter how much traffic I send or receive, the graphs only ever show Writing to the drives, never reading from the drives.

Hopefully I am simply misinterpreting what I am seeing, but if I am, I am not sure how. I am thinking that some type of caching is going on here although I do not have any cache drives.

Any insight would be great!

Thanks

 

[HeloJunkie]

Well, I am not sure what happened, but after a reboot the problem appears to have gone away!