Troubleshooting
Problem
Memory leak occurs on a Windows host when using the MPP DSM v01.03.0305.0750 in a clustered configuration with persistent reservations.
Symptom
High memory usage on Windows clustered host. Windows host can reboot with stop error.
Cause
The SCSI Persistent Reservation (PR) code in DSM 1.0 makes a copy of the original PR command before passing it down the driver stack. It doesn't always remember to delete this extra copy, which results in a memory leak.
Environment
Windows host in clustered configuration and persistent reservations
Diagnosing The Problem
A Windows stop error can occur. Issuing a pool used command can show large amounts of memory (5-6Gb) being consumed by the ds4dsm, which indicates a probable memory leak.
Resolving The Problem
The problem is fixed in a new version of the ds4dsm.sys, which is due to be released in 2Q15.
Workarounds: Do not use persistent reservations, -reboot host before memory runs out.
Workarounds: Do not use persistent reservations, -reboot host before memory runs out.
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Document Information
Modified date:
16 September 2022
UID
ssg1S1005069