Sun QFS and Storage Archive Manager (SAM): Preventing Disk LUNs In a Clustered Environment From Becoming Unresponsive or Mounted Read-Only (Doc ID 1617319.1)

Last updated on SEPTEMBER 23, 2016

Applies to:

Sun QFS and Storage Archive Manager (SAM) - Version 5.0 and later
Information in this document applies to any platform.

Symptoms

In some occasions it can occur that after a cluster node reboot or a restart of some cluster resources, some or all of the samfs filesystems fail to mount correctly or mount in read-only mode. In several of these occasions this was caused by the cluster framework putting scsi-reservations on the data luns and thus preventing another node or a qfs client outside the cluster  (COTC) from accessing these LUN's correctly.

Cause

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