PANIC: raid: Unable to find root aggregate. Reason: Unknown.

MChe — Wed, 04 Jun 2025 14:16:53 GMT

Hi to all.

FAS 2650 with ONTAP 9.1P2 updated to ONTAP 9.1P8

Two node in HA cluster.

On one node I have get next error after booting.

Uptime: 1m33s

PANIC: raid: Unable to find root aggregate. Reason: Unknown. (DS=76, DL=10, DA=33, BDTOC=0, BDLBL=0, BLMAG=50 BLCRC=2, BLVER=0, BLSZ=0, BLTOC=0, BLOBJ=0) in SK process rc on release 9.1P8 (C) on Tue Dec  5 14:34:12 GMT 2017
version: 9.1P8: Wed Aug 30 02:09:07 PDT 2017
compile flags: x86_64.optimize.nodar
Writing panic info to HA mailbox disks.
HA: current time (in sk_msecs) 31681 (in sk_cycles) 1852899501657506
DUMPCORE: START
Dumping to disks: 0b.00.7P2
....................................................................................................................................................................................................................................................................................................................

May be who know can I reset all nodes to the factory settings?

I want to get clean system and setup again.

Re: PANIC: raid: Unable to find root aggregate. Reason: Unknown.

AlexDawson — Fri, 08 Dec 2017 05:54:21 GMT

Hi there,

I see you have found your answer on reddit - https://www.reddit.com/r/netapp/comments/7hse6x/how_get_back_clean_fas2650/

For the benefit of those reading here, it seems the issue was that this node did not own any disks (or partitions) to boot from.

topic PANIC: raid: Unable to find root aggregate. Reason: Unknown. in ONTAP Discussions

PANIC: raid: Unable to find root aggregate. Reason: Unknown.

Re: PANIC: raid: Unable to find root aggregate. Reason: Unknown.