03-06-2025, 03:55 PM
The I/O wait issue can be tricky, but here are a few steps to help identify the root cause:
Check Disk Health: Start by checking the health of your drives. You can use tools like smartctl or Unraid’s built-in SMART diagnostics to check for any potential issues or errors on your disks.
Monitor Disk Activity: Use iostat or iotop to monitor which disk is experiencing heavy read/write activity. These tools can give you a real-time overview of disk I/O performance and help you pinpoint the problematic disk.
Check System Logs: In Unraid, look at the system logs under the “Logs” tab. Any disk-related errors or timeouts should appear here, which could give you more context on the I/O wait issue.
Test Each Disk: If you suspect a particular drive, you can try temporarily disconnecting it and see if the issue resolves. This way, you can isolate the problem.
Disk Queue Length: Check if there’s an unusually high disk queue length in the I/O statistics. A high queue length can indicate that a disk is struggling to keep up with requests.
As for your hardware setup, with a mix of 5400 rpm and 7200 rpm drives, the slower drives might occasionally cause delays, especially under heavy load. It could be worth considering whether certain drives are being over-utilized and causing the bottleneck.
Check Disk Health: Start by checking the health of your drives. You can use tools like smartctl or Unraid’s built-in SMART diagnostics to check for any potential issues or errors on your disks.
Monitor Disk Activity: Use iostat or iotop to monitor which disk is experiencing heavy read/write activity. These tools can give you a real-time overview of disk I/O performance and help you pinpoint the problematic disk.
Check System Logs: In Unraid, look at the system logs under the “Logs” tab. Any disk-related errors or timeouts should appear here, which could give you more context on the I/O wait issue.
Test Each Disk: If you suspect a particular drive, you can try temporarily disconnecting it and see if the issue resolves. This way, you can isolate the problem.
Disk Queue Length: Check if there’s an unusually high disk queue length in the I/O statistics. A high queue length can indicate that a disk is struggling to keep up with requests.
As for your hardware setup, with a mix of 5400 rpm and 7200 rpm drives, the slower drives might occasionally cause delays, especially under heavy load. It could be worth considering whether certain drives are being over-utilized and causing the bottleneck.