Spare disk low caused by automatic auto-partitioning after ONTAP upgrade

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Category:: fas-systems

Specialty:: HW

Last Updated:

Applies to

ONTAP 9.x
Advanced Drive Paritioning (ADP)
FAS Systems
All Flash FAS (AFF)

Issue

AGGR with both partitioned and non-partitioned.
After upgrading ONTAP, the system automatically partitions the spare disk on the whole drives.
- Sysconfig -r log before ONTAP upgrade:
  Pool0 spare disks RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) --------- ------ ------------- ---- ---- ---- ----- -------------- -------------- Spare disks for block checksum spare 0a.10.10P3 0a 10 10 SA:A 0 SSD N/A 55176/113000448 55184/113016832 (fast zeroed) spare 　　 0a.10.11P3 0a 10 11 SA:A 0 SSD N/A 55176/113000448 55184/113016832 (fast zeroed) spare 0d.11.11　　　0d 11 11 SA:B 0 SSD N/A 7325400/15002419712 7325650/15002931888
- Sysconfig -r log after ONTAP upgrade:
  Pool0 spare disks RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) --------- ------ ------------- ---- ---- ---- ----- -------------- -------------- Spare disks for block checksum spare 0a.10.10P3 0a 10 10 SA:A 0 SSD N/A 55176/113000448 55184/113016832 (fast zeroed) spare 0a.10.11P3 0a 10 11 SA:A 0 SSD N/A 55176/113000448 55184/113016832 (fast zeroed) spare 0d.11.11P3 0d 11 11 SA:B 0 SSD N/A 55176/113000448 55184/113016832 spare 0d.11.11P1 0d 11 11 SA:B 0 SSD N/A 3635089/7444663808 3635097/7444680192
As a result, there is no suitable spare disk available for AGGR using an unpartitioned whole disk.

RAID group /aggr1/plex0/rg1 (normal, block checksums) RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) --------- ------ ------------- ---- ---- ---- ----- -------------- -------------- dparity 0d.11.0 0d 11 0 SA:B 0 SSD N/A 7325400/15002419712 7325650/15002931888 parity 0d.11.1 0d 11 1 SA:B 0 SSD N/A 7325400/15002419712 7325650/15002931888 data 0d.11.2 0d 11 2 SA:B 0 SSD N/A 7325400/15002419712 7325650/15002931888 data 0d.11.3 0d 11 3 SA:B 0 SSD N/A 7325400/15002419712 7325650/15002931888 data 0d.11.4 0d 11 4 SA:B 0 SSD N/A 7325400/15002419712 7325650/15002931888 data 0d.11.5 0d 11 5 SA:B 0 SSD N/A 7325400/15002419712 7325650/15002931888

Partitioning caused a shortage of spare disks, triggering the SPARES_LOW notification.

HA Group Notification (SPARES_LOW) ERROR

config_thread: callhome.spares.low:error]: Call home for SPARES_LOW: /aggr1/plex0/rg1

Logs indicate insufficient partitions (P1 or P2) in the spare disk configuration before andafter the upgrade.