Aggregate failed due two disk failures and one disk reconstruction stalled.

saurav — Wed, 04 Jun 2025 09:52:41 GMT

One of the four aggregates has failed and gone offline. It's showing two disks have failed and one disk in reconstructing stalled. It shows raid group is missing two disks.

It is possible to recover data in this case?

How to identify physically the failed disks and their location in shelf as there is no abnormal indication?

NAS::> node run -node NAS-
NAS-1 NAS-2
NAS::> node run -node NAS-2 aggr status -r
Aggregate aggr1_NAS_2_2 (failed, raid_dp, partial) (block checksums)
Plex /aggr1_NAS_2_2/plex0 (offline, failed, inactive)
RAID group /aggr1_NAS_2_2/plex0/rg0 (partial, block checksums)

RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks)
--------- ------ ------------- ---- ---- ---- ----- -------------- --------------
dparity 0a.01.0 0a 1 0 SA:A 0 FSAS 7200 3807816/7798408704 3815447/7814037168
parity 0b.02.22 0b 2 22 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0a.01.2 0a 1 2 SA:A 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.2 0b 2 2 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.10 0b 2 10 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168 (reconstruct stalled)
data 0b.02.4 0b 2 4 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data FAILED N/A 3807816/ -
data 0b.02.6 0b 2 6 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0a.01.8 0a 1 8 SA:A 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.8 0b 2 8 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data FAILED N/A 3807816/ -
data 0b.02.0 0b 2 0 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.12 0b 2 12 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.14 0b 2 14 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.16 0b 2 16 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.18 0b 2 18 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.20 0b 2 20 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
Raid group is missing 2 disks.

Re: Aggregate failed due two disk failures and one disk reconstruction stalled.

paul_stejskal — Fri, 17 Feb 2023 21:29:18 GMT

I would open a P1 case because this requires urgent attention. There are some wafliron things to try but we have to move quick.

topic Aggregate failed due two disk failures and one disk reconstruction stalled. in ONTAP Discussions

Aggregate failed due two disk failures and one disk reconstruction stalled.

Re: Aggregate failed due two disk failures and one disk reconstruction stalled.