Processes receive SIGLOST (lost lock) upon SPARC OVM guest migration for NFSv3 mounts with a NetAPP NFS server (Doc ID 2298786.1)

Last updated on FEBRUARY 16, 2021

Applies to:

Symptoms

Issue is lost locks on Oracle Sparc OVM (LDOM) guest after migration.   Processes receive a SIGLOST - which will result in the shutdown (or crash) of applications such as databases. 

upon guest resume after the migration, messages similar to this are logged:

  <Date stamp> <hostname> klmmod: [ID 424047 kern.notice] NOTICE: lockd: pid 28993 lost lock on server <NFS server name>

Quite often multiple messages like this seen - depending on how many files are locked on the NFS server at the time of the "live migration".  

This issue is only present when the locked files reside on a NetApp NFS server, and when NFSv3 (or NFSv2) is used for the mounts.

Changes

Cause

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