What is the command to identify master node on vcs
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Answer / sbrahman75
#vxdctl -c mode
mode: enabled: cluster active - MASTER
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Hi I wanted to know what command can I use to perform a rescan in Solaris10 u4/u5 64 bit machine. I know once the disks are added we can perform a rescan using the following commands drvconfig-->disks--> cfgadm OR devfsadm But they will detect the disks and once the disks are remove the entries are still shown unless the disks are removed. So is there another command or a script that could help me find that disks were removed from my solaris machine.
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1. How do you replace a failed boot disk under meta in solaris? Step by step explanation? 2. How do you remove meta only for the root slice? remaining slices should run under meta? 3. what you would do if you want to replace a slice using metareplace option? 4. what is the significance of 51% state database replicas in SVM? 5. what are the common errors you find in Solaris Volume manager? 6. You have a boot disk under svm, the machine fails to boot and remains in ok prompt? what could be the possible reason? 7. metastat -p shows a metavolume needs replacement. Metavolume is a single way mirror only. Actually you find disk and metavolumes are ok and I/O is happening to the filesystems… how will you remove the metareplace message that comes out of metastat. 8. How to create a shared disk group in VxVM? 9. What is the difference between private and public regions in Veritas Volume manager? 10. what would you do if the private region of a particular disk group is full? What are the design considerations for the size of private region in Vxvm disk group? 11. How to replace a corrupt private region? in vxvm 3.5 and greater versions… 12. How would you convert a volume from gen to fsgen? why should you do that? 13. How can you unencapsulate a boot disk in VxVM? 14. How to identify multiple paths for a disk. 15. What is the difference between Vxdmp and EMC powerpath? 16. vxdisk -o alldgs list o/p shows some disk groups in braces… What does that signify? 17. what are the various layouts that are available in VxVM? 18.What is a layered volume? how to create it using vxmake? 19.How to quickly mirror a volume, if the volume is empty? 20. How to grow a volume? 21. What is the difference between failing and failed disks? 22. How to replace a failed disk in Veritas? 23. Plex is in a disabled state. How will you recover? what are the steps to follow? 24.what is the difference between detached and disassociate state of plexes? 25. Whats the boot process of VxVM? 26. Whats the difference between SVM and VxVM? What would you recommend to your clients? why? 27.What are the various clusters you have worked on? 28. Which cluster is better VCS or Sun cluster? 29. Compare and contrast VCS and Sun Cluster. 30.how will you start VCS service? What are the configuration files in VCS? 31. How would switch a service group? 32. How would you freeze a service group? 33. What is a Split brain scenario ?
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