After reading these tricky aix questions, you can easily attempt the objective type and multiple choice type questions on aix. If the global command log exceeds 1 mb, the log is truncated. This specific customer installation of zencom is running on an ibm rs6000 model h80 under aix version 4. In this example we will use vio commands since this is.
The pdf version is free to redistribute as long as credit. Lazysystemadmin aix quick howto tips vio server run vio server commands as root. Try these commands 1 tune aix for optimal performance 1 understanding power system lpar profiles 2 unix 5 unix commands comparison sheet 1 useful hacmp commands 1 veritas volume manager cheat sheet 1 vi editor cheat sheet 1 vio server howto 1 vios command line. Vi cheat sheet acns bulletin ed03 february 1995 file management commands. This is a quick and dirty cheat sheet on lvm using aix, i have highlighted many of the common attributes for each command however this is not an extensive list, make sure you look up the command. Look into npswarn, npskill stuff in performance management guide changing the boot device order. Lessons to learn iowait is a form of idle time it is simply the percentage of time the cpu is idle and there is at least one io still in progress started from that cpu the iowait value seen in the output of commands like vmstat, iostat. This has to done on the hmc for the profile of the vio server. We both use the same root user and database user, but during different sessions. Aix expert jaqui lynch gives stepbystep instructions.
He gave some commands yesterday which are confusing me and id like find out which commands he issued at aix unix box. Removing storage from aix lpar and vio server solutions. Aix is ibms unix base operating system which world wide used for it operations. Originally released for the ibm rt pc risc workstation, aix now supports or has supported a wide variety of hardware platforms, including the ibm rs6000 series and later power and powerpcbased systems, ibm. The reason for these apparently duplicate directories is, in the initial boot phases or when linux boots into singleuser mode which is the same thing, only the root file system is mounted. The vio server uses a subset of aix and the vio user padmin runs in a restricted shell and has a different command set. All real memory allocated to a process will have a backing store of equal size for every page of real memory allocated, there will be a page of disk space from paging space allocated. Building a vio server can be done either by the graphical user interface on the hardware management console hmc or running a script in an ssh. Ibms secure, scalable, and robust open standardsbased unix operating system for ibm power systems. Once the disks are not being used the following commands bring the disks and adapters offline or into a defined. The aix operating system is designed to support the open groups single unix specification version 3 unix 03 for portability of operating systems based on the unix operating system.
It would be helpful if somebody can provide a step by step commands for the same. Aix is stable operating system which is mostly used with oracle database. Lets take a look to the commands needed to gather and change the configuration. View information about aix commands, including syntax statements, descriptions of flags, and usage examples. In these documents, youll find the best practices to run your aix environment with the storage server and that includes the queue parameter recommendations.
Built on decades of ibm technology and innovation, aix is designed to provide the highest level of performance, security, and reliability of any unix operating system. Get a feel for vios commands, their intuitive flags, and how close the vios commands are to ibm aix operating system commands. Primary administrator on the vio server is the user padmin. Aix, aix admin, aix lvm, lvm, hmc, lpar, vio, hacmp, hacmp cluster, nim, aix nim, aix virtual optical device, mksysb backup, nim restore, tl upgrade. Aix determines which users have the most page space allocated to them and selects those processes for termination. Once in input mode, any character you type is taken to be text and is added to the file. The global command log is made up of all the virtual io server command line interface commands executed by all users, including arguments, the date and time the command was executed, and from which user id it was executed. How to list hdisks attached to vio run the command as root. A standalone vio server, or lpar in a nim environment, other than the nim master.
Hello, this blog is for the beginners who is having passion on aix. Nim, storage, network, vio, powerha, hmc, performance tuning. If you really happy about this blog, kindly leave a comment. The global command log is viewable only by the padmin user id, and it can be viewed by using the lsgcl command. This user id has a shell called the ios commandline interface ioscli that runs a unique set of commands for managing devices assigned to the vio servers.
If youre not familiar with aix, learning to navigate the vios is a great stepping stone to understanding aix better. For example, in case of vio pro and preprod separated, you must use the same vlan on the sea of prod and preprod. A virtual target device is the name of the mapping of the backing device to a virtual host adapter that a client will attach to. You must either use this option to specify the id of the partition, or use the p option to specify the partitions name. A backing device in the storage pool context is e ectively a lv. Clients vio servers use the resources that reside on the nim master to be installed. The positioning commands operate only while vi is in command mode. Basically aix 6903 requires nim at 6903 or 7303 can be applied to 2. The vio server should not be considered as another lpar, it is a vio server. You can use all ioscli commands as user root by appending usrioscliioscli. Npiv works as like scsi adapter which allows multiple client partition can be access to the fiber channel adapter directly which means that actual physical adapter will be present in to vioservers and logical entity will be created and mapped to client partitions hence in vioservers physical adapters works in passthrough mode and actual io. This course is also appropriate for prior releases of aix and has a high practical content. The basis of setting up dual vio servers will always be.
First i try to give a general overview about a topic with the most important terms and definitions. Discover the syntax used by the virtual io server vios command line interface cli. How to find out the parent and child device in aix. I am working offshore and another guy is working onsite. All ioscli commands are in fact calls of usrioscliioscli with the command as argument. Im trying to get previous commands issued during another session. These 15 solved aix questions will help you prepare for technical interviews and online selection tests during campus placement for freshers and job interviews for professionals. Dear readers, welcome to aix interview questions with answers and explanation. List the underlying aix os version of the vios oem platform.
Ibm powervm virtualization introduction and configuration. Vio server installation configuration standardization. This is followed by some importantuseful commands, what are probably. Run vio server commands as root september 28, 2010 aix quick howto tips vio server. Learn to install, customize, and administer the aix operating system in a power system p partitioned environment. Using svmon to display available memory on ibm aix. Many of these commands are similar to regular aix commands for example, lsdev but use different flags and command structures for example, lsdev dev. Ibm introduced the support of npiv technology with vios virtual io sever 2. You switch vi to input mode by entering any one of several vi input commands. By default the ioscli commands are not available for the root user. It has a restriced shell cant change home directory. Aix is different from linux but based on unix operating system structure. To see the history of the vio commands lsgcl to turn on ntp service in vio server startnetsvc xntpd to deny rsh connections from ip address 192. Ibm powervm virtualization introduction and configuration mel cordero lucio correia hai lin vamshikrishna thatikonda rodrigo xavier understand powervm features and capabilities plan, implement, and set up powervm virtualization updated to include new power7 technologies front cover.
Most often rootvg consists of disks which are lvm mirrored. You see this if you list the aliases of the padmin user. Usually rootvg utilize some kind of disk protection. The only system in a nim environment that has permission to run nim commands remotely on. Run vio commands from the hmc using viosvrcmd without. How to create a disk backing device by specifying a name.
You can read here about many things of the world of aix. You cannot execute any commands until you exit input mode. But once you understand the reasoning behind the flags, youll see the sense in it all. Aix restore restore qtvf filename or device lists archiv restore qvxf filename or device restores all. Use vio commands wherever possible rather than going into. I want to remove the storage from the lpar as well as from the vio server. Until one is explicitly set, this is the rootvg storage pool. This user id has a shell called the ios command line interface ioscli that runs a unique set of commands for managing devices assigned to the vio servers. Most of the storage pool commands recognize a \default storage pool if none is speci ed.
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