SAP Knowledge Base Article - Preview

3520960 - Recommendations on the fstrim service for SAP HANA DB

Symptom

Received alert from Azure:

fstrim scans the filesystem and sends 'UNMAP' commands for each unused block it finds; useful in thin-provisioned system if the system is over-provisioned. Running SAP HANA on an over-provisioned storage array is not recommended.

Active fstrim can cause XFS metadata corruption.


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Environment

  • SAP HANA, platform edition 1.0
  • SAP HANA, platform edition 2.0
  • OS version <= SLES 15 SP2

Product

SAP HANA 1.0, platform edition ; SAP HANA, platform edition 2.0

Keywords

fstrim, XFS, corruption, UNMAP , KBA , HAN-DB , SAP HANA Database , BC-OP-LNX-SUSE , SUSE Linux , Problem

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