Top 100+ Veritas Volume Manager (vvm Or Vxvm) Interview Questions And Answers
Question 1. How To Add A Disk To A Disk Group In Veritas Volume Manager?
Answer :
To add the physical disk c0t0d0 inside the disk institution homedg calling it disk90 in Veritas in Volume Manager:
# vxdg -g homedg adddisk disk90=c0t0d0
Question 2. How To Remove A Disk From A Disk Group In Veritas Volume Manager?
Answer :
To cast off a disk, disk90, from a disk organization, homedg, in Veritas Volume Manager:
# vxdg -g homedg rmdisk disk90
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Question 3. How To Clear An Import In Veritas Volume Manager After A Crash?
Answer :
# vxdisk clearimport c0t0d0s0
Question 4. How To List All Disks And Displays Their Status In Vxvm?
Answer :
# vxdisk listing
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Question five. How To Remove A Grayed Out Or Obsolete Disk, Or Remove A Disk From A Disk Group In Veritas Volume Manager?
Answer :
# vxdisk rm disk 01
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Question 6. How To Remove A Disk So That It Is No Longer Under Veritas Volume Manager Controls?
Answer :
# vxdisk rm c0t0d0
Question 7. How To Add Or Bring A Disk Under Veritas Volume Manager Control?
Answer :
To add or convey a disk below Veritas Volume Manager manage:
# vxdiskadd c0t0d1 or # vxdisksetup -i c0t0d1
It may help to newfs the s2 slice of the disk and perform a vxdctl allow to get it to feature a disk.
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Question eight. How To Remove A Volume And Any Sub Disks And Plexes Associated In Vxvm?
Answer :
# vxedit -rf rm extent call
Question nine. How To Rename The Disk Disk90 To Be Called Disk80 In The Group Rootdg In Veritas Volume Manager?
Answer :
# vxedit -g rootdg rename disk90 disk80
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Question 10. How To Set Disk90 In The Group Homedg To Be A Hot Spare In Veritas Volume Manager?
Answer :
# vxedit -g homedg set spare=on disk90
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Question 11. How To Set The Comment Field Of Usb Disk Subdisk 01-01 To “comments Are Here”?
Answer :
# vxedit set remark “feedback are here” subdisk 01-01
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Question 12. How To Sets The User To Ep, The Group To Eigrp And The Mode Rw-rw-rw On The Volume Vg01?
Answer :
# vxedit set user=ip organization=eigrp mode=0666 vg01
UNIX/XENIX Interview Questions
Question 13. How To Display The Default Disk Group?
Answer :
#vxdg defaults
Question 14. How To Set The Default Disk Group?
Answer :
# vxdctl default <disk group>
Question 15. How To Display Disk Group Information?
Answer :
# vxdg list or # vxdg listing <disk group>
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Question sixteen. How To Display Free Disk Space In Disk Group?
Answer :
# vxdg free or # vxdg –g freeoff
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Question 18. How To Create A Disk Group With A Specified Disk Group Version No.?
Answer :
# vxdg –G <DG version> init <disk group>
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Question 19. How To Make A Non Cds Disk Group To Cds Disk Group Or Vice Versa?
Answer :
# vxdg –g set <diskgroup> cds=onought to recognize the DG ID of the destroyed disk group name. You can get the DG ID by means of showing the blanketed disk of destroyed DG.
# vxdg import <DG ID>
Question 22. How To Disable/deport A Disk Group?
Answer :
# vxdg deport <disk group>
Question 23. How To Rename A Disk Group During Import Operation?
Answer :
# vxdg –t –n <new disk group> import <disk group>
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Question 24. How To Rename A Disk Group During Deport Operation?
Answer :
# vxdg –n <new disk group> deport <disk group>
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Question 25. How To Clear Locks On Disk Group During Import?
Answer :
# vxdg –C import <disk group>
Question 26. How To Forcible Import The Disk Group?
Answer :
# vxdg –f import <disk group>
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Question 27. How To Move Disk Group Object From One Dg To Another?
Answer :
# vxdg –o increase circulate
# vxdg –o enlarge move datadg newdata dg disk01
It will move the whole associated object with disk02 from datadog to new datadog.
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Question 28. How To Split A Disk Group To Form A New Disk Group?
Answer :
# vxdg –o amplify split <old DG> <new DG> disk01 disk02
It will create a brand new DG with designated disks.
Question 29. How To Join Two Dgs Into One?
Answer :
# vxdg join <source DG> <target DG>
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Question 30. How To Destroy A Disk Group?
Answer :
# vxdg break <disk group>
Question 31. How To Upgrade A Disk Group?
Answer :
# vxdg upgrade <disk group>
It will upgrade the DG to the highest DG version supported through VxVM.
Question 32. Name The Mandatory Disk Group In Vxvm 3.Five? How Will You Configure Vxvm In three.Five?
Answer :
Rootvg is the necessary diskgroup in VxVM 3.Five, deploy is the command to configure VxVM, It will create the disk organizations, initializes the disks and provides them to the group.
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Question 33. How Will You Create Private And Shared Disk Group Using Vxvm?
Answer :
For Private DG Command: vxdg init
For Shared DG Command: vxdg -s init < disk1 disk2 disk3 >
Veritas Cluster Server (VCS) Interview Questions
Question 34. Which Are The Different Layouts For Volumes In Vxvm?
Answer :
Mirror, striped, concat (default one), raid five, stripe-replicate, mirror-stripe.
Question 35. What Is The Basic Difference Between Private Disk Group And Shared Disk Group?
Answer :
Private DG: The DG which is most effective seen for the host on that you have created it, if the host is part of cluster, the private DG will now not be visible to the other cluster nodes.
Shared DG: The DG which is shareable and seen to the alternative cluster nodes.
Question 36. How Will You Add New Disk To The Existing Disk Group?
Answer :
Run vxdisk add command, a good way to open menu driven program to do numerous disk operations, pick out add disks alternative or you can use every other command vxdisk add.
Logical Volume Manager (Linux) Interview Questions
Question 37. How Will You Grow/cut back The Volume/document System? What Is The Meaning Of Grow By And Grow To Options? What Is The Meaning On Shrink To And Shrink By Options?
Answer :
vxassist command is used to do all volume administration; following is the outline and syntax.
Grow by means of choice: This is will develop your document system by using adding new length to the prevailing report machine.
Grow to option: This will develop your record machine as consistent with the new length. This WILL NOT ADD new size to the present one.
Shrink with the aid of option: This will shrink your file gadget by means of decreasing new length from existing file device.
Shrinkto choice: This will decrease your document device as in line with the new length. This WILL NOT REDUCE the report system with the aid of lowering new length.
Command: vxassist -g [growto, growby, shrinkto, shrink by] duration
Question 38. How Will You Setup And Unset Up Disks Explicitly Using Vxvm?
Answer :
You can use /etc/vx/bin/vxdisksetup to unset up the disk, and /and so forth/vx/vxdisksetup to setup the disk.
Question 39. How Will You List The Disks, Which Are In Different Disk Groups?
Answer :
vxdisk list is the command will listing the disks from the DG that is presently imported; you may check the identical the usage of vxprint command too. Vxdisk -o alldgs listing command list all the disks which might be in distinctive dg's.
Question 40. What Is The Private Region In Vxvm?
Answer :
Private location stores the dependent VxVM statistics; it also stores the disk ID and disk geometry. In brief phrases it has metadata of the disk.
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Question forty one. If, Vxdisk List Command Gives You Disks Status As "blunders", What Steps You Will Follow To Make The Respective Disks Online?
Answer :
If you faced this issue because of cloth disconnection then genuinely do vxdisk scandisks, otherwise unset up the disk using /and so on/vx/bin/vxdisksetup and setup the disks once more the use of /etc/vx/bin/vxdisksetup, this will clearly assist! [ /etc/vx/bin/vxdisksetup will remove the private region from the disk and destroys data, backup the data before using this option]
Question forty two. Can You Reduce A Fs In Vxvm? What Is The Risk Involved?
Answer :
There are some risks and issues worried at the same time as decreasing a Filesystem in VxVM.
UFS volumes can't be shriveled, best grow operation is allowed.
VxFS volumes ought to be established for grow and shrink operation; if it is unmounted no operation can be completed
You can not resize a quantity that consists of plexes with distinct layout types (e.G concat and stripe). Attempting to accomplish that consequences in the following errors message:
VxVM vxresize ERROR V-5-1-2536 Volume has different
Organization in each mirror
To resize this type of quantity efficiently, you have to first reconfigure it so that every information plex has the identical layout type.
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Question 43. What Is The Role Of Vxconfigd Daemon?
Answer :
Vxconfigd daemon handles all configuration management tasks for VxVM gadgets. It continues disk and disk institution configuration details, communicates configuration changes to the kernel, and modifies the persistent configuration records saved on disks.
Vxconfigd affords the interface between VxVM instructions and the kernel tool drivers.
Vxconfigd handles configuration change requests from VxVM utilities, communicates the alternate requests to the VxVM kernel, and modifies configuration facts saved on disk.
Vxconfigd also initializes VxVM when the system is booted.
So nearly any command which changes the configuration of VxVM objects (plexes, volumes) have interaction with vxconfigd daemon.
Question forty four. Where Is The Diskgroup Configuration Information Is Stored In Vxvm?
Answer :
The DG configuration data is saved in /and many others/vx/cbr/bk directory. Last five configuration adjustments are stored.
Question 45. What Is Stored In Problem Of A Vxvm Disk? Do All The Disks Of A Diskgroup Have The Same Information In Their Private Region?
Answer :
The non-public area of a VxVM disk saved disk header label and configuration records about VxVM gadgets including volumes, plexes and sub disks.
Yes, every disk in a diskgroup shops a whole replica of the configuration data.
Question forty six. Can You Import A Dg With Incomplete Set Of Disks?
Answer :
Yes, If a number of the disks in a Diskgroup have failed, you can import the DG using –f alternative
# Vxdg –c import diskgroup
Question forty seven. How Will You Replace A Faulty Disk In Vxvm?
Answer :
A disk which has failed may be visible from the output of vxdisk listing command. The disk tool ctd can be lacking from the output and it could be visible as failed became: c#t#d#. This confirms that the disk has indeed failed.
We can use vxdiskadd menu options to replace the faulted disk. Choose alternative 5 from the guys, after which list the failed disk the use of 'listing' choice. We would need to select an alternate disk for the alternative. The listing of to be had disks is also proven with the aid of vxdiskadd. Press 'y' and complete the substitute pastime.
