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SPARC M8 and SPARC M7 Servers Product Notes

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Updated: January 2022

3-node-ldom guest domain Cluster - Unable to acquire quorum device - Node panic (26732562)

In the following configurations, it is possible for a node in an Oracle Solaris Cluster to encounter a panic when a cluster member reboots.

  • The cluster is comprised of three or more Oracle VM Server 3.5 guests.

  • The cluster quorum device (as described in the Oracle Solaris Cluster 4.3 Concepts Guide, Chapter 2, "Key Concepts") is a virtual disk whose physical storage is provided by SAN Fiber-Channel storage devices.

  • A restart of one member of the cluster triggers another node to panic with the following message:

panic[cpu28]/thread=c0400b4cb2640: CMM: Unable to acquire the quorum device.
2017-07-10/00:44:16  ereport.cpu.generic-sparc.l3data-return@/SYS

Workaround: Adjust the "qd_acquisition_timer" to 90, as described in the Oracle Solaris Cluster 4.3 Software Installation Guide, Chapter 3, "How to Configure Quorum Devices". Refer to the subsection "Unreachable quorum device" for information about adjusting the "qd_acquisition_timer."