Extremely Slow Parity check and It just started for no know reason

[stepmback]

Background: About two weeks ago I upgraded the hardware in my unraid server. New MB, CPU/Cooler, Cache(nvme) and Ram. I kept the power supply, HBA and nic. Everything seems to be running fine.

 

Issue 1: Around 4pm yesterday (Sunday) my parity check kicked off. No idea why. It is set to run at the end of every month. Why did it kick off?

 

Issue 2: The parity check is very slow. This is the first parity check since my upgrade. Before the upgrade it would take 17 hours. It has been 17 hours and is only 25% done. Should I stop the parity check? My HBA is not in my 16x pcie, could that be the issue?

 

I am attaching a diagnostic file.

auburn-diagnostics-20240916-0954.zip

[JorgeB]

17 minutes ago, stepmback said:

Why did it kick off?

Looks like the server rebooted on its own yesterday:

Sep 15 16:00:35 AUBURN emhttpd: unclean shutdown detected

This is usually a hardware issue, or bad power

 

As for the speed, nothing obvious logged, check that the disks are performing normally by running the diskspeed docker test.

[stepmback]

Should I stop the parity check or let it run?

 

Also, in my upgrade build I moved the HBA card to 8x pcie slot (I think it is the 8x, I know not the 16x) slot. Could that be the issue? No enough lanes?

Edited September 16, 2024 by stepmback

[JorgeB]

11 minutes ago, stepmback said:

Should I stop the parity check or let it run?

Stop it and run the docker test, if you run the controller tests it will also show if it's s controller bandwidth problem.

[Kilrah]

You have a 16 drive PCIe 2.0 HBA in a x4 slot and  17 drives, I'm imagining you connected all 16 HBA ports? That's 2GB/s divided by 16 drives, likely will limit things at the start of the check. Likely when you get past 50% and you're beyond those 4TB drives it'll speed up. 

Try to use all mobo SATA slots to reduce the count on the HBA.

Edited September 16, 2024 by Kilrah

[stepmback]

I stopped the parity check and downloaded diskspeed am running benchmarks now. Anything I should be looking for?

[JorgeB]

Post the results, both the disk and controllers tests.

[stepmback]

 

[Kilrah]

 

You've put the HBA in a x1 slot? That's going to be maxed out by 2-3 drives...

[stepmback]

My screwup. I don't have a graphics card so the PCIEX16 is available but that may change which is why I did not use that. I also figured maybe incorrectly that because the card is old there is no point in putting it there.

 

Want to make sure i put it in the right slot. Put it in the PCIEX4? 

 

 

[stepmback]

Thanks for finding that. I appreciate all the help. I changed the card to the PCIEX4 slot and it is now showing as 4X