topic Re: ghost aggregate on my two node HA pair in ONTAP Discussions

ghost aggregate on my two node HA pair

grocanar — Wed, 08 Jan 2025 16:22:31 GMT

i have strange behaviour on my ha pair

when i run

snap::> disk show -disk 4.11.* -fields aggregate
disk aggregate
------- ---------------------
4.11.0 aggr0
4.11.1 aggr0
4.11.2 aggr0
4.11.3 aggr_snap_n02_sata_02
4.11.4 aggr_snap_n02_sata_02
4.11.5 aggr_snap_n02_sata_02
4.11.6 aggr_snap_n02_sata_02
4.11.7 aggr_snap_n02_sata_02
4.11.8 aggr_snap_n02_sata_02
4.11.9 aggr_snap_n02_sata_02
4.11.10 aggr_snap_02_system
4.11.11 -
12 entries were displayed.

But

snap::> aggr show -aggregate aggr0

Error: show failed: Aggregate "aggr0" does not exist.

but now i can't use this disk attached on this "gohst" aggreagte.

how can i remove the ownership of gthis disk to aggr0?

Re: ghost aggregate on my two node HA pair

TMACMD — Wed, 08 Jan 2025 18:58:14 GMT

do this.

set diag

debug vreport show

I suspect WAFL/VLDB will not match.

storage aggregate remove-stale-record -node <node> -aggregate aggr_snap_02_system

You need to figure which "node" that disk is on. You left that out of your output.

Re: ghost aggregate on my two node HA pair

Ashun — Thu, 09 Jan 2025 01:48:05 GMT

If aggr0 is not yours or want to delete it
Run the following command to determine which node aggr0 is on
::> system node run -node * -command sysconfig -r
Run the following command based on the above output to remove aggr
::> set -privilege advanced
::*> storage aggregate remove-stale-record -nodename [node_name] -aggregate aggr0

Re: ghost aggregate on my two node HA pair

grocanar — Thu, 09 Jan 2025 16:57:43 GMT

Hi
Thank for your answer it seems indeed an aggregate only in wafl.
I run debug vreport show

debug vreport show
aggregate Differences:

Name Reason Attributes
-------- ------- ---------------------------------------------------
aggr0(a6f36178-3aba-4ffa-8628-f549bc4c63c8)
Present in WAFL Only
Node Name: snap_n02
Aggregate UUID: a6f36178-3aba-4ffa-8628-f549bc4c63c8
Aggregate State: restricted
Aggregate Raid Status: raid_dp
Aggregate HA Policy: cfo
Is Aggregate Root: true
Is Composite Aggregate: false

but when i run

storage aggregate remove-stale-record -node snap_n02 -aggregate aggr0

Error: command failed: Failed to delete aggregate "aggr0". Reason: aggregate 'aggr0' cannot be destroyed because it is restricted. You will need to take it offline before destroying it.

snap::*> storage aggregate offline -aggregate aggr0

Error: command failed: Failed to check if aggr0 is a foreign (unknown) aggregate. Reason: entry doesn't exist.

I m still stuck in removing that host aggregate

Re: ghost aggregate on my two node HA pair

grocanar — Thu, 09 Jan 2025 17:08:35 GMT

I found the solution on this KB
https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/The_aggregate_cannot_be_offline_before_deleting_aggregate

i just run
debug vreport fix -type aggregate -object aggr0(a6f36178-3aba-4ffa-8628-f549bc4c63c8)

After i was able to put offline the aggregate and remove it.
Thank you both for your help to solve that problem