Category: Blog for Unix Admin

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VxVM : Re-adding a failed boot disk – incase of correctable errors

  Re-adding a disk is same procedure as replacing a failed disk, except we use same disk. We have to detach the disk  from vxvm, so that the VxVM will detect the disk failure and will cease access to the failed disk.  You can then perform...

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Solaris Troubleshooting : recover hung System Controller [ Sun Fire v1280, E2900, 3800, 4800, 4810, 6800, E4900, E6900, and Netra 1280, 1290 Server ]

When a system controller (SC) is hung, try a few steps before pressing the Reset button on the SC. Step 1 . Try to Telnet or directly connect to the serial port of the “hung” SC, TIP into the platform shell, and use the “reboot” command....

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VCS : Configure GAB manually

    VCS uses the Group Membership Services/Atomic Broadcast (GAB) protocol for cluster membership and reliable cluster communications. GAB has two major functions. It handles the following tasks: Cluster membership Cluster communications       To configure GAB Set up an /etc/gabtab configuration file on each...

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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...

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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...

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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...

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