With such a storage server you can determine the volume id from the location code. The vios allows one to share resources between logical partitions lpars. Mapping virtual ethernet adapter to lpar powervm forum forum. Introduction to aix logical partition lpar virtualization.
To avoid mistakes in vios and lpar environments, this article will simply show you how to map disk devices within vios server without caring. This procedure shows how to map a virtual small computer serial interface scsi disk on. Therefore, the other vio server can not access the disk on the back end. How to install aix from a virtual optical device unixwerk. Ibm vio lpar training in pune india radical technologies. Introduction pure storage flasharray offers an allflash block storage solution for every it need from entrylevel workload acceleration to 100% nvme. Coordinate with networking team in designing network. Repeat the above mentioned steps in the second vios lpar also. One of the default settings for external backend disks is that, once the vio server gets hold of the disk, it takes control of it. Vio server is managing both aix clients and linux clients.
This might be handy if you want to upgrade a nim server without the need to spend a day in the datacenter or when there is no cd drive available to assign to an lpar. This small article shows how to make use of this feature when installing an lpar. Using the powervm create a logical partition lpar profile task, you can. This will give you a live lpar so you can check your npiv plumbing before tackling san. This is a management interface that installs on top of the vios software that provides much of the hmc. Migrating a physical lpar to a sanattached virtual vio client lpar. About discovering lpar and vio in veritas operations manager. Ibm power systems are typically configured to use one or more vio servers vios. Create lpar, configure vios and install aix on power e850. Vlan tagging, virtual switch creation, control channel creation. Adding a disk to an lpar hcl software product documentation.
Especially when you be requested to expand a disk or decommission a disk. The vios lpar type allows for the creation of virtual server adapters. We need a virtual scsi adapter in vios and client lpar for presenting a disk to client lpar. Column 1 is the name of the disk mapping using my standard naming convention and column 2 is the hdisk associated with the mapping. Lpar differs from other popular alternatives like xen and vmware in terms of operation. Disks that are controlled by any thirdparty multipathing software or the logical.
For aix clients, we could do a disk mapping from slot numbers to vio and also. Now we need to create the virtual fc client adapters in the aix lpar and configure necessary drivers in the aix os to use multipathing. This creates a file that can be used for the virtual optical device on the vio server. Creating an lpar profile hcl software product documentation. Map the virtual scsi disk on the vio client partiton to the backing device on the vio server. For those who are not familiar with powervm technology, one of its benefits is to offer disk mapping through vios servers. When owned by a vios lpar they can be shared to other lpars. Flasharray for ibm i pure1 support portal pure storage support. If you have more client lpars, repeat the steps for all those lpars in both the vios lpars. This method is an extremely elegant way to manage vio disk resources and simplifies the process of mapping disks. The lpar needs to use the respective fcdriver multipath for ibm storage. How to manage virtual io server using command line tech.
Sep 06, 2012 ibm aix an introduction to vio raaj tilak s 4. Aix logical partition virtual machine technology is released by ibm with aix as a full virtualization solution. Unfortunately most of the disks that are in vio server is 51g. My problem is that someone has done the mapping of disk in vio to the lpar disk and i am not sure which physical disk. There are proponents of vscsi, npiv and shared storage pools. Aix administrator resume racine, wi hire it people we get. After the managednode status is changed to 1, lparcmdrm establishes a session with the lpar, queries for operating system information and dlpar capabilities, notifies. In my previous article, i showed how you can use nmon in vios to display the performance statistics of hdisks that are mapped to client lpars. The hypervisor does not own io resources such as an ethernet card, these can only be assigned to a lpar. Enter the adapter id that you want to use on the vios. The below procedure is to assume that we need to add a new virutal disk to the root volume group on the lpar, for that we need to map a new disk from vio server to the lpar.
With the command lsrep we check if there is already a repository on our vio server. Posted by bibhuti bhusan on may 26, 2015 june 19, 2015. Still have not resolved all the issues for the ivm. Coordinate with networking team in designing network adapter mappings for vio servers. Also, can i skip the part of removing disk from os vio, if i plan on keeping the disk within vio. Mapping disks from vios to ibm i partition by using hmc gui. Now you know that this vio server maps hdisk149 as lun 8000. Configure redundant vio servers, create ether channel, shared ethernet adapter, network interface backup. Mar 20, 2016 how to mapping a disk from vio server to lpar in aix.
He writes ibm redbooks and teaches ibm classes at itso technical forums worldwide on all of these areas as. Pinned topic mapping virtual ethernet adapter to lpar. Lpar differs from other popular alternatives like xen and vmware in terms of operation, performance and flexibility. That is, for every lpar, there must be 2 virtual scsi adapters. The vios runs aix under the hood, and is equipped with a restricted korn shell with a limited set of commands setup using aliases typically. While the virtual io server software is packaged as an additional software bundle that a user purchases separately from the aix 5. Hello, the easiest way to know which vhost a partition is assigned to log into the lpar and run the following command. The lpar we want to migrate cannot be a vio server the mobile partitions network and disk access must be virtualized by using one or more virtual io servers all virtual networks of the lpar vlans. All eight disks for this lpar are displayed individually. This is a vios mapping of a physical to a virtual ethernet adapter. Getting started with open broadcaster software obs. It is possible to map these virtual scsi server adapters to multiple lpars. Aug 19, 2016 krishanthlee hello, this blog is for the beginners who is having passion on aix.
The hypervisor does not own io resources such as an ethernet card. In the client lpar, under virtual adapters, you pick the vio server adapter you want to map to. How to manage virtual io server using command line. Expert in virtualization, vio vitalizing network interface cards, and disks. It minimizes the amount of vio involvement, because after the initial mapping of a fc adapter to a vio client lpar is complete, you need run no other commands on the vio serversunlike the virtual scsi disk method, where.
The below procedure is to assume that we need to add a new. A logical partition lpar is a subset of a computers hardware resources, virtualized as a separate computer. The user believes the lun id ordering is wrong from lpar side. One maps a vio virtual ethernet adapter to a client lpar in the client lpar profile. The ibm system p hypervisor is a type 1 hypervisor with the option to provide shared io via a type 2ish software vios partition. Mapping disks to both vio servers and creating network control channels gives vio client lpars two legs to stand on. Vio mkvdev and lpar hdisks names aixexplore mis jan 10 10. The last challenges to completing the lpar migration are to get all the other devices set up properly. Krishanthlee hello, this blog is for the beginners who is having passion on aix. Then, you map those lvs to vio client lpars for use, seeing.
Find instructions for mapping a virtual disk on a client logical partition to its physical disk on the virtual io server. Also, can i skip the part of removing disk from osvio, if i plan on keeping the disk within vio. We want the client lpar to be able to switch access from 1 vio server to another at its discretion. You can reclaim unwanted file systems or disk space to save resources. It includes the connectivity to a fibre adapter with ibm i running as a virtual machine lpar and a vio server running on an ibm power server. This procedure shows how to map a virtual small computer serial interface scsi disk on an aix or linux client logical partition to the physical device disk or logical volume on the virtual io server. When a new disk server is added to the existing virtual server, the user interprets lun id from the lpar side is incorrect. Taking advantage of it can save you hbas usage, increase availability, gain flexibility in lpars, reduce costs, and so on. Vlan tagging, virtual switch creation, control channel. Agentless discovery of client lpars and vio servers is not supported. Disks are presented to vioc by creating a mapping between a. How to mapping a disk from vio server to lpar in aix. In our example above, the lpar number of the a25acdldm001g server is 69 and its lpar name is h3j5lp69. If you really happy about this blog, kindly leave a comment.
This vio server runs a special version of the aix operating system. This might be handy if you want to upgrade a nim server without the need to. Netapp 5600 how do i see either in vio or in the lpar, how the mapping of the disks defined in the vio from the san mapped to the disk in the lpar for instance, disk26 in vio is mapped to disk1 in lpar xyz. In effect, a physical machine can be partitioned into multiple logical partitions, each hosting a separate instance of an operating system. I find that aixminded technicians will lean towards npiv because thats what they have used traditionally. Assigned resources by making six partitions lpar client of vio server and clients installation. It is always helpful to be clear of the mapping relationship between the hdisk in aix and the backend san disks. This table provides the installed software versions for the different components. Disk mapping to lpar with dual vios via vscsi and mpio. The vios lpar type allows for the creation of virtual server adapters, where a regular aixlinux lpar does not. A walkthrough of the process of mapping a virtual scsi disk to an aix lpar including some tips. Using the powervm add disk to a logical partition lpar task, you can add a. He writes ibm redbooks and teaches ibm classes at itso technical forums worldwide on all of these areas as they are related to system design and server consolidation. Now that we have the lpar number, we can continue with our disk mapping.
The below examples assume that this is copied to tmp on the vio server. Oct 27, 2014 column 1 is the name of the disk mapping using my standard naming convention and column 2 is the hdisk associated with the mapping. Many customers use vscsi diskmapping in vios to present external storage volumes to their client lpars. Vios works by owning a physical resource and mapping that physical resource to virtual resources.
I probably say it is easy to find out it if the san disks are connected directly through the fibre channel hbas that belongs to the lpar. Os400 software, lpar, high availability, external disk, windows integration, and linux. For aix clients, we could do a disk mapping from slot numbers to vio and also uname l to determine the lparid and serial number frame its running on. Jan 24, 2012 in our example above, the lpar number of the a25acdldm001g server is 69 and its lpar name is h3j5lp69. Overcommitted memory can be paged to disk using a vios partition. The command to map the hdisk to the virtual scsi server adapter is. Then, you map those lvs to vio client lpars for use. In effect, a physical machine can be partitioned into multiple logical partitions, each hosting. Disk mapping to client from dual vios using vscsi and. When the user sees lun id from the lpar side, the lun id is seen as 81, 82, 83, and 85. Sep 16, 2008 it is always helpful to be clear of the mapping relationship between the hdisk in aix and the backend san disks.
Virtual io vio is the virtualization feature software implemented from. With a vio server this 146 gb disk can easily be carved into three logical volumes, each of which could be a boot volume for a different lpar. How to install aix from a virtual optical device unixmantra. Netapp 5600 how do i see either in vio or in the lpar, how the mapping of the disks defined in the vio from the san mapped to the disk in the lpar for instance, disk26 in vio is. Mapping virtual scsi disk on vio servers ibm systems media. Aix data migration from one disk to another disk duration. It also makes it possible to perform ios upgrades on the vio servers dynamically without affecting the vio client lpars. For now, the only thing missing is the disk itself. Lpar comes as a kernel module, with a set of user space utilities to create and manage logical partitions lpars. It minimizes the amount of vio involvement, because after the initial mapping of a fc adapter to a vio client lpar is complete, you need run no other commands on the vio serversunlike the virtual scsi. Example to determine which virtual adapter the root drive is mapped to from the.
If the whole disk is assigned to a vio client, then pvid can be used to trace back. Storage mapping for dmp backed devices is available only if the vio server with dmp. I suppose this is the vlan you mentioned in your post. Thats why this kind of configuration is highly used. Problem mapping lun disk from vios to the lpar 1 my san group assigned 51g of lun space to the vio server.