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High iowait and GUI is acting weird or no access at all

Featured Replies

Hey there,

my server is again acting weird.

 

The CPU goes up to 100% and it locks up during that time. After it is reachable again the UI does weird stuff like showing the drives of the array as mountable and such...

 

Could someone please take a look? I thought I've found the issues of the system, by:

- exchanging the Ryzen system for a complete Intel i3 System

- exchanging the older controllers for new ones.

 

The only thing that's the same as before is RAM, USB Stick and the SSDs and HDDs...

Weird as well is, that the created diagnostics are named "tower" and not like the server should be named.

tower-diagnostics-20231222-0924.zip

  • Community Expert

The diagnostics are mostly empty which suggest the flash drive was not online at the time they were taken.   This is also suggested by the fact that they had 'tower' in the name which is consistent with Unraid losing access to its settings.

  • Author

How can that happen? After rebooting the flash drive is up and running again. I've changed the flashdrive just some month ago and it is a Samsung one, that is recommended by Spaceinvaderone...

 

These problems are getting so annoying.

  • 2 weeks later...
  • Author

And it's happening again. VMs  are disabled completely, I've managed to disable the docker service as well when it happened...nothing changed. As if unraid is busy with itself.

 

image.thumb.png.210487063dc482679a0cc5a837e0c994.pngimage.thumb.png.e176cb61684ddd07f1f3c1737cad845d.png

 

When I try to get the diagnostics, the process hangs at collecting the zfs info:

image.thumb.png.99528f2f8d4c9322cf3647edcb09bb01.png

 

I've then tried to stop the array. But it does not work, the gui indicates, that it is running...

image.thumb.png.1e29d57fee6c8ade6fe7381dc0d08f6a.png

 

But it isn't anymore:

image.png.5b1de4e9c4c4acea030360eaed40fdb5.png

 

New RAM is on its way. Could it be something else? Diagnostics via shell is also not possible.

Edited by pappaq

  • Author

Even a poweroff -f command doesn't bother the system as it runs the mover command...I cannot reboot, shutdown or stop the mover process, even shell telling me it is not running anymore. Feels like complete randomness.

Edited by pappaq

  • Author

Had to hardreset the system. Changed the RAM but no change at all. When a backup from my workstation is running, the system becomes unresponsive smb wise...

 

I have read many iowait issues unraid related in the past 6 month. Is there anything that can be done about this?

  • Community Expert

Using disk shares or exclusive shares for everything that you can may help.

  • Author

I've changed my backup jobs to drive shares. Currently the smb is responsive as it backups...so that seems like a win. Lets see, if I can streamline the usage of the array around this circumstance. Thanks @JorgeB

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