Data Rebuild Running Slow - 5MB/s

[jbflix]

Fairly new to UnRAID, but loving the features especially the integraed Docker.

 

My disk 2 failed at the weekend, so I swapped it out with a pre cleared spare, but the data rebuild is running really slowly. Currently running for 1 day and 15 hours at 5.3MB/sec and estimating 2 days and 22 hours to complete the 2Tb rebuild. I am loathe to stop the process, but concerned that there is an underlying issue with the replacement disk that could be the problem. Syslog attached.

[JorgeB]

IRQ16 used by the LSI controller got disable, so it's normal to have a huge slowdown, rebooting should fix it, but it can happen again, you can try a bios update and/or using another PCIe slot if available.

[jbflix]

Thanks for the advice.

 

Will the rebuild start again from 0 or will it pick up where it left off after a reboot?

[JorgeB]

It start from the beginning.

[jbflix]

Thanks. Now rebooted and restarted the sync. Now running at 40MB/sec. Much better.

 

Many thanks for your prompt assistance. 

[adammerkley]

I have found that IRQ 16 gets disabled if I attach a monitor and keyboard to my server.  The USB keyboard causes the issue.  Disconnecting the keyboard and then rebooting always clears it up.

 

Since I very, very rarely have a monitor and keyboard attached, I've never investigated it further.  Last time this came up was last weekend when I was diagnosing some bad memory with memtest.