Hi,

 

I am running a system with 2 parity drives and 14 data drives, each with 6TB.

 

While data drives 2 - 14 behave completely normal and only show read/write data when they are accessed, data drive 1 and both parity drives behave strange. They show constantly a low read and write throughout of about 30 - 50 KB/s, see screenshot.

 

The "File Activity" plugin is not showing any activity, nor does "Dynamix Active Streams".

 

Any idea what is causing this? Or how to investigate this any further?

 

Thanks for any support!

 

unraid-diagnostics-20201115-1532.zip

Edited November 15, 20205 yr by Raki72

Your system share is on the array. In fact, it is on multiple disks on the array. I don't know what you have in that share, but normally docker.img and libvirt.img is there, and that is in fact where you have them. When docker and VM services are enabled, these files are always open. Usually people don't store anything else in that share.

 

For some reason you changed that share to cache-no. It should be prefer so it will stay on cache. If it is on the array, disks will stay spunup as you have seen, and docker performance may be impacted by parity.

 

In order to get system moved back to cache where it belongs, in addition to setting the system share back to cache-prefer, you must go to Settings and disable both Docker and VM Manager, because mover can't move open files. Then you could run mover on Main - Array Operation.

 

What else are you storing in system share that makes it have files on so many different disks?

 

Thanks, makes a lot of sense. 😀 To be honest, I don't have a clue what I have on the system share. Let me execute the steps you explained. Then I can also check what is in this share. 👍

Solution works. Thank you very much. 😊

 

Actually this is all that is on the system share:

 

root@UNRAID:/mnt/user/system# tree
.
├── docker
│   └── docker.img
├── dump
│   ├── Zotac1.rom
│   └── gtx970.rom
├── libvirt
│   └── libvirt.img
└── libvirt.img

3 directories, 5 files

 

You can see how much of each disk each user share is using by clicking Compute... on the User Shares page. 

29 GB. Seems to be okay to me. Or isn't it?

1 minute ago, Raki72 said:

29 GB. Seems to be okay to me. Or isn't it?

I wanted you to check there to make sure none of system share was still on the array.