Category: Solaris Disk Management

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VxVM Troubleshooting – Procedure to Replace Internal FibreChannel (FC) Disks controlled by VxVM

Hot swapping of a failed disk is fairly straight procedure if the disks are regular SCSI disks, but for the Fibre Channel (FC) disks we should follow different procedure for hot swaping. Below specific procedure should be used when replacing one of the internal disks in...

3

Solaris SVM – How to check on a running machine which disk was used to boot.

It is often possible that we boot from a Solaris machine from one of the root mirror disk, and after sometime we forget current active disk. And the information of active boot disk is important while we perform SVM maintenance disks. This post will help you...

3

Solaris10: San/SAS/MPXIO/STMS config files

With the release of Solaris 10 Operating System (OS), the configuration of Storage Area Network (SAN), Serial Attached SCSI (SAS) attached devices, and turning on STMS/MPXIO has changed. This Post details the new ways devices are brought into the operating system, and their configuration files. The...

Storage Configuration information Center

  Read – SAN Guide for Beginners Read – SAN Storage Responsibilities for Enterprise System Administrators Read – Pre-Planning/Pre-work required for Storage Migrations in Unix. Read – SCSI Guide for Beginners Read – EMC Power Path commands for system administrators Read – Determine WWN for HBA...

Solaris Disks and SVM Information Center

Read – Physical disk to c#t#d# mapping by serial number Read – SMI Label vx EFI Label Read – replicate VTOC table to new disk using fmthard Read – how Solaris assigns controller numbers Read – How to Restore a Mirrored Root Configuration from Backup Read...

1

Solaris SVM – How to Restore a Mirrored Root Configuration from Backup

In this scenario we are assuming that we  have full backup of the new disk.  In order to restore the machine exactly the way it was, it is necessary to have a record of the locations of the state databases, and also the configuration of the...

2

Solaris – Everything you need to know before you run FSCK

Whenever a file system develops inconsistencies because some unexpected issues, the integrity of the file system needs to be verified.  UNIX has developed a very sophisticated file system integrity check ,fsck utility,  which attempts to verify that all the links and blocks are correctly tied together. This...

1

Solaris Troubleshooting : Interpreting SCSI Errors from /var/adm/messages

While handling storage related issues, it is important to Unix Admin to take the decision about disk drive replacement.  The interpretation and understanding of the cause of SCSI message blocks is one important part that influences the drive replacement decision.   This article will help you...

5

Solaris Admin Reference – Solaris Storage Multipathing – MPxIO ( aka STMS, SCSI_VHCI)

 What is Oracle Solaris Storage Multipathing MPxIO? MPxIO Provides multipath access to storage luns by grouping together the physical paths and presenting a single logical path. Supports both symmetric and asymmetric storage  Controls failover / failback of LUNs as appropriate due to path failures, either manually or...

5

Solaris Tips : Check current active boot device, when used in volume manager (SDS / SVM / VxVM)

During regular maintenance It is often a requirement  to us to determine which  disk we actually boot from when the root volume is under volume manager control.   Solaris on SPARC   Sparc with SVM  # prtconf -pv|grep bootpath: bootpath: ‘/sbus@3,0/SUNW,fas@3,8800000/sd@1,0:a’ Sparc with VxVM Root Volume...

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