On Unraid 7.2.2 with 2 Parity Drives -- and 2 drives offline due to errors, over the course of 2 days. Because I lost a drive yesterday, and now today, I looked again in the logs, and raise this ask for help.

I see this error in the logs among the more standard "kernel: md: diskxx read error" errors:

Nov 30 18:29:01 Morningstar kernel: pcieport 0000:00:01.1: AER: Correctable error message received from 0000:00:01.1
Nov 30 18:29:01 Morningstar kernel: pcieport 0000:00:01.1: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
Nov 30 18:29:01 Morningstar kernel: pcieport 0000:00:01.1:   device [8086:462d] error status/mask=00000001/00002000

As well as this:

kernel: ata6.00: exception Emask 0x10 SAct 0x400 SErr 0x4090000 action 0xe frozen

Thus my concern of a broader issue, as [8086:462d] is a PCI Bridge:

00:01.1 PCI bridge: Intel Corporation Device 462d (rev 05)

I wonder, for example, if my LSI 9305-16I is failing and taking drives down with it, but I lack experience in interpreting this information.

Any advice on how to troubleshoot, or what my root cause is, is welcome. FYI, I moved to 7.2.2 just under 10 days ago.

Thank you!

morningstar-diagnostics-20251204-1214.zip

Both disks dropped offline, and the first one to drop kept reconnecting and dropping multiple times. This is typically a power/connection issue.

2 hours ago, JorgeB said:

Both disks dropped offline, and the first one to drop kept reconnecting and dropping multiple times. This is typically a power/connection issue.

The UPS it's attached to did just shutdown, out of the blue, a couple weeks ago. Maybe I should try swapping in other UPS + using my Power Supply tester, plus double-checking connectors? I should have a spare power supply around here as well.

11 hours ago, raqisasim said:

Maybe I should try swapping in other UPS + using my Power Supply tester, plus double-checking connectors?

Worth a try

On 12/4/2025 at 2:04 PM, JorgeB said:

Both disks dropped offline, and the first one to drop kept reconnecting and dropping multiple times. This is typically a power/connection issue.

For future reference for others, everything has now run overnight successfully. I did get new disks, but I also looked at my mess of a cabling solution and brought in new SATA data and power connectors, and rewired/documented everything, double-checking connectors and the like. I did have distressingly loose SATA data cable connectors, despite the locking mechanism, so it's possible that was the proximate culprit.

The 2 new drives have synced without errors reported, and the system is working as per normal.

Thanks again!