To clean up the Solaris device tree

To clean up the PowerPath device tree:

Commandsvxdisk scandisksandvxddladm assign namesshould cater for most Dynamic LUN reconfiguration operations.It is essential the Solaris kernel device nodes and OS device handles do not contain any stale/failing device entries, and are deleted as required.Please take great care when deciding to recycle the vxconfigd daemon, as this can impact normal business operations for  other products, such as Veritas Cluster Server (VCS)

Warning:  Using this procedure incorrectly may prevent the operating system, or installed software applications, from functioning properly, including data loss. This procedure should only be done under the supervision of Veritas Technical Support, or by an experienced administrator. We recommend performing a backup of your data before continuing.

This article discusses an old legacy process to clean up the device tree on Solaris. There are many situations when cleaning up the device tree is a useful troubleshooting step.

It is often done for the following scenarios:

• Adding new disks
• Removing existing disks
• Troubleshooting missing disks

Please DO NOT follow this process going forward, as the Dynamic LUN reconfiguration steps have evolved since this article was written.
The following articles should be references and followed as required.
Articles: SOLARIS: LUN Removal Reconfiguration Guidelines

SOLARIS: LUN Addition Reconfiguration Guidelines

SOLARIS: Path Removal Reconfiguration Guidelines

SOLARIS: Path Addition Reconfiguration Guidelines

SOLARIS: How to convert the cfgadm failing state to the intended unusable state

LDOM: How to remove a Virtual disk presented to a Solaris GUEST domain

LDOM: How to remove a disk from a Solaris service I/O domain

LDOM: How to provision a disk to a Solaris service I/O domain

SOLARIS SPARC: Dynamic LUN addition and removal made easy with 'dmpdr -o refresh'

Solution

Warning: Using this procedure incorrectly may prevent the operating system, or installed software applications, from functioning properly, including data loss. This procedure should only be done under the supervision of Veritas Technical Support, or by an experienced administrator. We recommend performing a backup of your data before continuing.

To clean up the Solaris device tree

To clean up the PowerPath device tree:

To clean up VxVM device tree:


Please DO NOT follow the below steps.

Commands vxdisk scandisks and vxddladm assign names should cater for most Dynamic LUN reconfiguration operations.

It is essential the Solaris kernel device nodes and OS device handles do not contain any stale/failing device entries, and are deleted as required.

Please take great care when deciding to recycle the vxconfigd daemon, as this can impact normal business operations for other products, such as Veritas Cluster Server (VCS)