So I probably screwed myself on this one, but I'm honestly not entirely sure how I should go about fixing it.

First, what happened:

I was deleting some old folders from appdata, from containers I was no longer running and when I finished I noticed the docker service had stopped running. This isn't too big of a deal, as I still have all of the data and can recreate the compose files / template settings for everything. However, this made me want to do an upgrade that I had been putting off (as my server is living a couple hours away from me at my in-laws, and i generally like to be physically at my server when i upgrade.) Knowing this was probably foolish, I decided to do it anyway. after the update, unraid started, but the array stopped mounting at disk15. this repeated after two more reboots.

I know that there is some sort of system error on disk15 (as I saw from running Fix Common Problems) however it is zfs, not reiserfs, xfs, or btrfs so I am unsure how to proceed. I'm not entirely sure if the error occurred last night or while I was deleting folders from appdata. This is further complicated by the fact that I only have 1 parity drive, and disk3 has also failed. I am fine losing data if necessary, as there is nothing truly critical on this server. Of course, I would like to avoid this if at all possible.

Every time I try to run diagnostics collection it hangs on zfs-info.txt. I tried rebooting into safe mode, but was unable to. For some reason I can only reboot into regular mode? I was able to zip the output that it did create and will included that, if someone can help me (i cant seem to find a way to attach it to this post). Let me know if there's anything else I can add that may be helpful.

Thank you

UNRAID 7.3.0

Plugins & Addons:

CA Auto Update Applications

Community Applications

Disk Location

Dynamix Cache Directories

Dynamix System Information

Dynamix System Statistics

Dynamix System Temperature

File Activity v2

Fix Common Problems

FolderView

GPU Statistics

Live Memory Tester for UNRAID

MOTD

Nvidia Driver

NVTOP

Python 3 for UNRAID

RAM-Disk for Docker logs

rclone

Tailscale

TLDR (Command-Line Cheatsheets) for UNRAID

Unassigned Devices

Unassigned Devices Plus

unbalanced

Unraid Connect

User Scripts

User Scripts Enhanced

figured out that attachments. here's the diagnostics

diagnostics.zip

after walking away from my computer for half an hour and coming back my server has sucessfuly restarted in safe mode. i was able to get the array to start in safe mode. here is a fresh copy of my diagnostics, run from safe mode with the array started.

unraid-safemode-diagnostics-20260520-1635.zip

If it starts in safe mode it suggests a plugin issue.