- Solved
- Minor
Kernel panic. Will not complete parity check. The process stalls at random percent completes each attempt. All other services continue to work, but I am unable to stop/cancel the parity check. Unable to spin down drives.
VERIFIED HARDWARE ISSUE IS NOT THE CAUSE:
- All drives: SMART tests passed
- RAM: memtest86+ full pass, no errors
- CPU: No MCE errors, Intel microcode 0x4129
- Different crash sectors each time (not bad sector)
ISSUE:
Consistent kernel panic during parity checks:
"md: recovery thread: multiple disk errors, sector=XXXXXXXX"
"kernel BUG at drivers/md/unraid.c:1617"
ENVIRONMENT:
- Unraid: 7.2.3
- Proxmox VM on Intel 13900H
- Started after 7.0.2 → 7.2 upgrade
- Cannot downgrade below 7.2.2
BEHAVIOR:
- Crashes at random percentages (race condition)
- md_sync_thresh=2 delays but doesn't prevent
- Array otherwise stable
- Other Proxmox VMs unaffected
TUNING ATTEMPTED:
Even with ultra-conservative settings, crashes still occur:
- md_sync_thresh=4
- md_num_stripes=256
- md_sync_window varies
Bug is NOT avoidable through parameter tuning.
REQUEST: Is this a known bug? Will it be fixed in upcoming releases?