Tagged: troubleshooting

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Daddy, I have no friends and you are not playing with me.

My Three years old daughter told me these words!! My kid ( priyakari) started her playschool in Feb/13, She used to be a happy kid and very punctual to her school for the first 6 months. But suddenly, something changed in her schedule and she started...

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Solaris Troubleshooting : Disk i/o Performance Issues

This post is to highlight some of the steps needed to diagnose if an issue is in fact a disk performance issue or not.  And if it is, what data will be collected to help diagnose the issue. Please note that performance in general is not an...

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Solaris SVM: Recovery procedures when BOTH sides of the mirror indicate a "Last Erred" state

As a result of unusual failures such as multiple power failures, Solstice DiskSuite /Solaris  Volume Manager both submirrors of a metadevice mirror may be left in an unusual “Last Erred / Last Erred” state making it impossible to determine exactly which submirror must be fixed/replaced first...

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Solaris Troubleshooting Reference – Forcing a coredump on hung x86 / x64 solaris system

Befor going for troubleshooting please confirm that you really having ” system hang “    Symptoms of System hang: System appears to be hung system is not pingable can not login can not execute commands can not mount shares can not start/stop services system not responding hanging...

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Solaris Troubleshooting : map the Physical Device(s) from an EMC PowerPath Pseudo Device seen in “format” output

Under normal circumstances, an administrator could use the EMC PowerPath commands to obtain this information (ie. the powermt command). Sometimes this output is not always available, especially since Sun Explorer script does not collect it.

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Solaris Troubleshooting : Memory usage checking and troubleshooting

First you’ll need to check  how much Memory is used in Kernel and how much is used in User Memory. This is important to decide, what troubleshooting steps are required. A nice mdb dcmd ( this command can take several minutes to complete, and you have...

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