Pagecache bug can lead to hangs on SLES for SAP

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Environment

SUSE Linux Enterprise Server 12 for SAP Applications Service Pack 4

Situation

A bug has been identified in the pagecache mechanism which can cause servers to hang.

The symptom often presents it's self as very heavy I/O with blocked processes awaiting opportunity to make file updates.

Resolution

A patch for this issue was released in kernel 4.12.14-95.24.1 (2019-07-15).

Please update to this kernel or preferably the latest maintenance kernel.

Cause

Bug in pagecache mechanism.

Additional Information

This issue only existed in SLES for SAP 12 SP4

Disclaimer

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