Alt Disk Mksysb Command

Because the client system is running during installation, less time is required than with a. The alt_disk_mksysb command was called next, to populate the spare disk with the contents of the 7. Hdiskpower devices are a feature provided by EMC and are not created by AIX. alt_disk_install. -m Specifies the location of the mksysb that you want to clone. if yes, the I would customize the file and use it for "alt_disk_mksysb" command ( check '-i' switch). 미러된 rootvg를 alt_disk_install 로 복제하려고 하면 두가지 방법이 있다. This feature has been added to NIM with AIX 7. It creates a backup of BOS (/, /usr, /var, /opt). The -O flag "tells" alt_disk_install to call devreset command, which resets all custom configuration. Checking disk sizes. I ran my nimadm command to upgrade the alt_disk on my target host. go to maintenance mode, restore mksysb, choose tape here. While using NIM to do alt disk migration, does it use a mksysb of any sort? From what I understand, it clones old rootvg to another free disk (alt_rootvg). Be aware, however, that you. After updating the CD-ROM device, also select Add New Disk, shown in Figure 7, and create appropriately sized disks to install AIX. Once it completes it will varyoff altinst_rootvg volume group and unmount any /alt_* filesystems that it used to copy the data. Note that the disk must have enough capacity to restore the contents of the original rootvg of the system on which the mksysb was captured. Note: Above command can only be used before # shutdown -r command, otherwise it will not work. altdisk hdisk1 & We put all in background to avoid disruption of operation in case of network problems. rootvg # mksysb -i /mksysb/aixlpar1-mksysb Creating information file (/image. The clean-up process removes the alternate root volume group (altinst_rootvg) from the AIX Object Data Manager (ODM) database. Also a good idea is to prepare the alt_disk_install on the second boot disk. Hello, Running AIX 7. -a image_data=Value. The viosbr command creates a backup of only the VIOS configuration. This command will take 40-50 minutes after completion do AIX OS health check using following command ,After TL update on alternate disk bootlist will automatically set to new disk and admin need to take reboot of AIX server to test whether correct TL is installed or not and application and database is in healthy state and performing well. From what I'm gathering from your post you would like to clone your running LPAR to available disks and then re-allocated that disk to other LPAR, so the first command will do what you want. alt_disk_install -c hdisk1 Clones a running rootvg onto hdisk1 alt_disk_install -w Wakes up alt vg alt_disk_install -s Sends alt vg to sleep ! alt_disk_install -x Removes alt vg from disk /usr/lpp/bosinst/blvset -d /dev/hdisk0 -p 4. The snap command can use a DVD as a source as well as an output device. 2 Resets the pad string in the BLV to the correct AIX version. 3 correctly, and I want to use it to restore an mksysb image of other system, in other physically volume and move it to the other lpar to boot. alt_disk_install. Once all is fine, start the installation with the following commands “sleep” # alt_disk_install –S. -m Specifies the location of the mksysb that you want to clone. debug (1) collecting fc information. +Data layout of a mksysb tape. 1 TL2 SP2 1. The command does not remove any data from the disk. Nothing in. The alt_disk_install command is called again to make the final adjustments and put altinst_rootvg to sleep. 75 system and created a mksysb and then used that mksysb in conjunction with nim and successfully installed another system using the 4. Articles, reviews, demonstrations, FAQ and HOWTo's on AIX and Linux systems management on IBM POWER hardware. lsvg-p SANVG > vpaths in SANVG. rte» and «bos. 기본적으로 제공하질 않으므로 설치. Using alt_disk_mksysb to install a mksysb image on another disk. By using alt_disk_mksysb command we can restore the system backup on separate disk without down the server. If you do not. I have always created mksysb bootable images so you can burn to a cd/dvd and boot and install your system, but this time I was provided with the mksysb FILE. The version, release and TL of the bos. rte fileset must be installed on the system to execute the alt_disk_install command, and the bos. The mksysb command backs up mounted journaled file systems (JFS) and enhanced journaled file systems (JFS2) in the rootvg. alt_disk_install. why i choose alt_root_vg because updateios does takes long time and updates on current disk. The nim command performs an operation on a NIM object. If anyone has successfully done an alt_disk_migration from one TL to another, I'd appreciate knowing how it is done. 3) OS Migration/Upgradation | alt_disk_install –> cachefs method — nimadm 4) mksysb backup/restore 5) Provide boot CD image for maintenance activities 6) Centralized repository for Filesets. Do not have nim server. -m Specifies the location of the mksysb that you want to clone. For HACMP nodes: check the cluster status and log files to make sure the cluster is stable and ready for the upgrades. To clone rootvg in IBM AIX, you can run the alt_disk_copy command to copy the current rootvg to an alternate disk. The command execution will be performed in 2 phases which are described below. mksysb from 7028C64 to B80. For example, you can create a system backup from System_A and install System_A's mksysb image onto System_B without having to use product media to boot System_B. on client: update alt_disk filesets to the new version. After First DVD is install it will ask for next dvd Then run the below command on VIOS01 $ unloadopt -vtd vDVD01 ( if required you can use -release option too ) $ loadopt -vtd vDVD01 -disk SAP01_mksysb_dvd02 Then press enter on LPAR's restoration screen. The example in this technote will use a rootvg wpar that is on a single disk (hdisk11), and has private /opt and /usr filesystems (AKA a "detached" WPAR). I installed a system with an alt_disk_mksysb command, as follow:-Mksysb on a similar hw box with AIX6. 1 mksysb image. hdisk1 and has to be moved back to the original harddisk0. This way you can migrate a client to a lower AIX level then the level of the NIM server itself. 2번의 경우에 해당하는 작업방법이다. You can do that using the fcstat command with the new (and currently undocumented) flag -D. Rootvg of the server was on physical disk, alt_clone to SAN disk was not working (could be the limitation of sdd) Took the mksysb and restored it on new hardware with new profile, removed sdd and installed sddpcm there. I would like to use alt_disk_install (or is it alt_disk_clone). Reactions: Email This BlogThis! Share to Twitter Share to Facebook Share to Pinterest. Ensure all hardware including external devices are connected and powered on. the second option assumes you already have mksysb image available. alt_disk_install. thru nim or CDs. alt_disk_install -c hdisk1 Clones a running rootvg onto hdisk1 alt_disk_install -w Wakes up alt vg alt_disk_install -s Sends alt vg to sleep ! alt_disk_install -x Removes alt vg from disk /usr/lpp/bosinst/blvset -d /dev/hdisk0 -p 4. The bosboot command requires that the specified physical disk contain the boot logical volume. The alt_disk_install command will then be initiated. 8 If you are using the alt_disk_copy command to upgrade a system and the current level of the rootvg is prior to 6100-08 SP2 or 7100-02 SP2, install the bos. i am not sure but i searched around and found it can be done only in two ways. With this option, the current rootvg. We need to err to caution and make sure host alpha will still reboot back to hdisk0 in case we have to backout of the migration. Clone the rootvg to an alternate disk. My /etc/exclude. This option is typically used when updating the VIOS in order to minimize an outage in the event something goes wrong with the VIOS update. rte: This fileset ships the alt_disk_install command which allows cloning the rootvg and installing a AIX Version 4. Configured NIM master running AIX® 5. # alt_disk_mksysb -m /mksysb_images/my_mksysb -d hdisk1 alt_disk_mksysb flags-d target_disk(s) – The disk or disks you want to clone to. Then that mksysb image is restored to unused disks in the current system using alt_disk_mksysb, again using the -O option to perform a device reset. The problem was with the permission on Downloads folder on server hosting the nfs share and the mount command on prompt gave the permission denied issue:. 3 mksysb and 7. To create a new image. The example in this technote will use a rootvg wpar that is on a single disk (hdisk11), and has private /opt and /usr filesystems (AKA a "detached" WPAR). In NIM searches for the two filesets «bos. But when I expect to have a console, the screen remaind black. The viosbr command creates a backup of only the VIOS configuration. The value for device can be: Tape / CD device OR path name of mksysb image in a file system. Because the client system is running during installation, less time is required than with a. This is fastest & safest back-out method in case of any failure. 기본적으로 제공하질 않으므로 설치. I'd started out cautiously, by doing alt_disk_install and then trying to restore into that, but the ODM changes applied there by alt_disk_install failed when I tried to finish the process, causing the whole altinst_rootvg to disappear, except for some defunct device files. data from mksysb image. Backing up 4 files 4 of 4 files (100%). rte fileset must be installed on the system to execute the alt_disk_install command, and the bos. It is used to restore a machine, or to install it from scratch (also known as "cloning" a client). • #smitty > Software Installation and Maintenance > Alternate Disk Installation 선택 20. I just followed the steps as noted in the Installation guide for mksysb migration. To install DMP with mksysb on an alternate disk of a NIM client using commands manually: # /usr/sbin/nim -o alt. The alt_disk_mksysb command is called with a disk or a set of disks that is currently not in use, and the mksysb image is restored to disks such that, if the user chooses, the next reboot boots the system on an AIX level of the mksysb image. Information can be found alt_disk_install in the manual page of command. The prefix alt_ is added to the logical volume names, and the file systems are created with a prefix of /alt_inst. You can verify your alt disk migration logs under /var/adm/ras/alt_mig after the conversion process completes. rte alt_disk_copy -d this will clone the rootvg to the specified disk alt_disk_copy -e /etc/exclude. multiple instances is mksysb through CD, tape, or NIM. Then that mksysb image is restored to unused disks in the current system using alt_disk_mksysb, again using the -O option to perform a device reset. Using this technique a mksysb image is first created, either to a file, on CD or DVD or tape. on each disks which helps the GPFS to identify this disk and its place in a file system. 75 system and created a mksysb and then used that mksysb in conjunction with nim and successfully installed another system using the 4. The command line can also be used, as shown in Listing 20. 3 TL 7 SP 10 and the running system is also has the same OS level, I got the below info from IBM. alt_disk_install. The mksysb command backs up mounted journaled file systems (JFS) and enhanced journaled file systems (JFS2) in the rootvg. I did this migration from 6. Copy in a local path the 3 fractions of original mksysb file. AIX Subsystem Commands; AIX Scheduling commands; AIX Print commands; AIX PowerHA (HACMP) Commands; AIX performance tips and tricks; AIX Page Space Commands; AIX ODM Commands; AIX Network commands; AIX Misc Commands; AIX LVM Cheat Sheet; IMP IBM-AIX Web Links; AIX Install packages, upgrade, patching commands; AIX Disk Queue Depth Tuning for. Be aware, however, that you cannot change the allocation on the split-off volume group. 3 environment rsct problem, failing to start RG at one node. Install the "bos. alt_disk_install. Similar to how using the alt_disk_copy command in a global LPAR will create a copy of rootvg on another disk, an alternate bootset is a copy of a WPAR's rootvg on another disk. The clean-up process removes the alternate root volume group (altinst_rootvg) from the AIX Object Data Manager (ODM) database. The nim command performs an operation on a NIM object. The phase 1 and 3 are used in this example. To perform a simple alternate disk mksysb install, specify the source, mksysb, and disk resources. You can verify your alt disk migration logs under /var/adm/ras/alt_mig after the conversion process completes. You will need to move those backup files to a remote location, for instance, Network File System (NFS). txt) or view presentation slides online. multiple instances is mksysb through CD, tape, or NIM. IBM A4040-108 files are shared by real users. Using this technique a mksysb image is first created, either to a file, on CD or DVD or tape. alt_disk_copy -d hdisk1 --> Take the alt disk clone on Using two commands/steps we can easily find out the vhos How to install openssl and openssh in AIX? How to install openssl and openssh in AIX? Here are the instructions to download and install. alt_disk_install. Using the alt_disk_copy command. Alternate disk install allows you to copy your rootvg to alternate disk, apply any updates you want and set bootlist to boot from new disk doing this online ! It shorts down time to reboot only (at least 15 min as it usual for iBM harware) NIM alternate disk install added value that allows you restore foreign mksysb on alternate disk. grep for fail or failures on that log which will list the fileset's that didn't apply/convert properly. The alt_disk_copy command backs up only mounted file systems -- not raw logical volumes. After executing alt_disk_copy, unless otherwise specified, the default action is to set its bootlist to the disk alt_disk it resides on; in this case, it is hdisk1. AIX Breaking Root Disk Mirrors for OS Upgrade Before performing any OS patching, it is common practice to break the root disk mirrors. I did it only once, but both AIX versions were the same. rte fileset must be installed on the system to execute the alt_disk_install command, and the bos. Command-line for. To install DMP with mksysb on an alternate disk of a NIM client using commands manually. data file based on current rootvg configuration. com Doing a mksysb is an important sys admin task. This is a quick way to split a mirror and keep the data on both side. ls-al /dev/SANVG > Major No of SANVG. rootvg file, the rest of the data volumes are mapped to the system as LUNs via multi-path FC connection to a SAN and that is backed up separately. I did it only once, but both AIX versions were the same. MKSYSB: This resource is a file containing the image of the root volume group (generated with the AIX mksysb command) of a machine. alt_disk_install. Home / aix alt_disk_copy TL upgrade / aix alternate disk / AIX service pack upgrade / aix SP upgrade / AIX technology level / aix tl upgrade / How to upgrade TL and SP in AIX using alternate disk(alt_disk_copy). You can run the alt_disk_copy command to copy the current rootvg to an alternate disk. Keyboard shortcuts don’t work on Power A particular type of CPU that supports IBM i, AIX, and Linux in Skytap Cloud. I have heard about aix mksysb command. you can try to install a new AIX system, restore old mksysb with alt_disk_mksysb to another disk in the system and boot from it. The command to create alternate disk installation is sample, but you should be careful of syntax, because the results can be catastrophic # nohup alt_disk_install -BC -e /etc/exclude. Respaldo de un sistema IBM AIX Empezaré con un ejemplo sencillo en el que vamos a crear una copia exacta del rootvg que incluye todos los ficheros personalizados, usuarios, configuraciones hardware, etc. Again you can run lsrep command and you can see your repository. During my struggling days for job when I was appeared for interview, interviewer asked me how to take backup from NIM master, after hearing I was completely blank. chrep -size 4G. When the alt_disk_install command is run, the image. You can verify your alt disk migration logs under /var/adm/ras/alt_mig after the conversion process completes. Hi I am new to AIX. altinst_rootvg:克隆复制而来的rootvg卷组。其中所有的逻辑卷都以”alt“为前缀。 同时系统启动的引导顺序也改为从altinst_rootvg引导。. -a force=Value: Specifies whether to skip the checks on the target_disks. Take snapshot of HACMP configuration: smitty cm_cfg_snap. Checking disk sizes. When the alt_disk_install command is run, the image. In NIM searches for the two filesets «bos. hello folks, I have a 300GB ROOTVG volume groups with one filesystem /backup having 200GB allocated space Now, I cannot alt disk clone or mirrorvg this hdisk with another smaller disk. alt_disk_install -c hdisk1 Clones a running rootvg onto hdisk1 alt_disk_install -w Wakes up alt vg alt_disk_install -s Sends alt vg to sleep ! alt_disk_install -x Removes alt vg from disk /usr/lpp/bosinst/blvset -d /dev/hdisk0 -p 4. Nothing in. alt_disk_mksysb problem I have an lpar running AIX5. Cloning allows administrators to upgrade their OS and then fall back to other disks in case of a problem. Cleanup is executed to end the migration. LOGICAL_VOLUME= hd11admin FS_LV= /dev/hd11admin Creating cloned rootvg volume group and associated logical volumes. Now we are finally ready to run the command that will create a AIX boot disk from the mksysb archive. What is the difference between mksysb & savevg commands ?. Set up the system on which you want to install DMP as NIM client. alt_disk_install. nimadm then updates spot and LPP source with these two filesets. I installed a system with an alt_disk_mksysb command, as follow:-Mksysb on a similar hw box with AIX6. Z -l /efix/IV53587s Dont forget to put your alternate back to sleep or you can have problems: # alt_rootvg_op -St. alt_disk_install. After a system boots from a PowerPath device, the bosboot command cannot function correctly. When the alt_disk_install command is run, the image. The master issues the alt_disk_install command to the client, which makes a copy of the clients rootvg to the target disks. You can verify your alt disk migration logs under /var/adm/ras/alt_mig after the conversion process completes. I want to clone one of the partitions using alt_disk and then move the disk into the other partitions disk bay and boot it up. data from mksysb image. Reactions: Email This BlogThis! Share to Twitter Share to Facebook Share to Pinterest. data file, run the following command: mkszfile 2. I have heard about aix mksysb command. data is given) to create the logical volumes and file systems. Unfortunately, that would involve some extra backups and possibly more extensive downtime. No mksysb should be involved, correct?. rte -a lpp_source=lpp6104 spot6104 8) Run the nimadm command for the OS migration using NIM # nimadm -j nimadmVG -c cstest-3 -s spot6104 -l lpp6104 -d "hdisk1" -Y • –j flag specifies the VG on the master which will be used for the migration • -c is the client name • -s is the SPOT name. The alt_disk_copy command allows users to copy the current rootvg to an alternate disk and to update the operating system to the next maintenance or technology level, without taking the machine down for an extended period of time and mitigating outage risk. boot_images fileset must match the oslevel in the mksysb. While using NIM to do alt disk migration, does it use a mksysb of any sort? From what I understand, it clones old rootvg to another free disk (alt_rootvg). What is an alt_disk_mksysb and why is it useful? alt_disk_mksysb clones your mksysb to the disk that you choose. boot_images -a lpp_source=LPPaix61tl05sp03 SPOTaix61tl05sp03. alt_disk_install. Unter müssen die zur Version des NIM-Servers passenden Filesets «bos. At times, you might want to run a command at a specified time or on a specific date. mkszfile -f must be called prior to mksysb in order to create the /. Use only these, do NOT doctor with what the commands have created. boot_images) in the SPOT. altdisk hdisk1 & We put all in background to avoid disruption of operation in case of network problems. mksysb image file 을 이용한 alt_disk 생성 1) mksysb image file 을 이용한 alt_disk 생성 (1/3) Unit 4. Once it completes it will varyoff altinst_rootvg volume group and unmount any /alt_* filesystems that it used to copy the data. This file can be checked after the alt_disk_install has completed. Run alternate disk installation: # nohup alt_disk_install -B -C hdisk1 & After successful end of above operation test alternate disk installation (using wakeup key) # alt_disk_install -W hdisk1. If you have extra disks on your system, or have disks you would like to associate with one system, load a AIX, then remove them and associate with a new system, this is a good way to copy the rootvg to them. The bosboot command must run against an 'hdisk'. Two hours later, at the end of the alt_disk_install process, I got this message: Creating client boot image. Command& Once the process is running in the background, you can continue to work and enter other commands on your system. nimadm then updates spot and LPP source with these two filesets. While using NIM to do alt disk migration, does it use a mksysb of any sort? From what I understand, it clones old rootvg to another free disk (alt_rootvg). If tape cannot be found as in 1): use restore command 1): 2): 3}: On a test AIX box, use "smit alt_mksysb" and restore the present mksysb image from tape on a disk. Erweiterung NIMADM/alt_disk_copy: die Auswahl von zusätzl. Check if the hardware microcode is up to date - see the microcode update document on this web site. Does anyone have any ideas? Should I have used this bosboot command: bosboot -ad /dev/hdisk2? Should I boot off hdisk2 before I attempt the alt_disk_install again so the system will see that hdisk2 is bootable? I've sent this info into IBM, but am hoping I can get a quick answer from this forum. Technical support for the HMC is provided by IBM's pSeries support center. data Cloning rootvg using alt_disk_copy;. alt_disk_install. Posted in Aix administration Tagged Aix nim, Command line example for Mksysb backup of a remote machine using NIM SEVER, how to nim mksysb, How to take mksysb backup using nim Post navigation Previous AIX ADVANCE COMMANDS – REPLACEPV , ALT_DISK, AIX ADMINISTRATION ADVANCE COMMANDS. Using this technique a mksysb image is first created, either to a file, on CD or DVD or tape. mkszfile로 받은 image. I understand that MKSYSB is a backup of the rootvg and we can exclude stu | The UNIX and Linux Forums. Using the cron daemon, you can schedule commands to run automatically. One mirror is used to perform the patching and the second mirror is saved for fail back purposes. Information can be found alt_disk_install in the manual page of command. Possible operations include initializing environments and managing resources. In < source directory > NIM searches for the two filesets «bos. alt_disk_install. 1 or later with AIX recommended maintenance level 5100-03 or later. Users can compress the core file and specify its name and destination directory. I took mksysb -i /alpha/mksysb via this command I have a 433 box and upgrading to 5L + + dspmsg alt_disk_install. I did this migration from 6. Available for AIX and Red Hat Enterprise Linux systems. As the output shows, /var/run/sendmail. The alt_disk_mksysb command is called with a disk or a set of disks that is currently not in use, and the mksysb image is restored to disks such that, if the user chooses, the next reboot boots the system on an AIX level of the mksysb image. After First DVD is install it will ask for next dvd Then run the below command on VIOS01 $ unloadopt -vtd vDVD01 ( if required you can use -release option too ) $ loadopt -vtd vDVD01 -disk SAP01_mksysb_dvd02 Then press enter on LPAR's restoration screen. on client: update alt_disk filesets to the new version. The disk image files are created on a hard disk that you specify. savevg (rootvg이외의 volume group을 백업한다. The filesystem desccriptor is written at a fixed position. This way you can migrate a client to a lower AIX level then the level of the NIM server itself. TechTip: Mksysb: Your AIX System Backup - MC Press Online. df -gt /fsname Display specific filesysetm disk utilization. In this section, you're going to use SUMA to retrieve TLs. alt_disk_install. 3 Applying fix packs, service packs, and interim fixes. Alt_disk_mksysb: Installs an existing mksysb on an alternate set of disks. If you want to keep the original disk as the primary boot disk, use the –B flag when you run alt_disk_mksysb, or run the bootlist command after the alt_disk_mksysb command has completed. boot the system. savevg to take non – rootvg backup. The lqueryvg command in mkszfile is incorrect. Upload all downloaded file sets from IBM web site. The following example shows how to clone the rootvg to hdisk1. where required follow any account specific change management processes. This command will take 40-50 minutes after completion do AIX OS health check using following command ,After TL update on alternate disk bootlist will automatically set to new disk and admin need to take reboot of AIX server to test whether correct TL is installed or not and application and database is in healthy state and performing well. To determine which disk device to specify, issue the following command: lsvg -M rootvg. Alternate disk installation can be used in two ways 1+Cloning the current running rootvg to alternate disk In this way you have an online backup availabe, at the cost of one or more physical disks. The command creates an altinst_rootvg volume group on the destination disk and prepares the same logical volume groups as in the rootvg, except the names are prepended with alt_ (for example, alt_hd1). rte alt_disk_copy -d this will clone the rootvg to the specified disk alt_disk_copy -e /etc/exclude. I would like to use alt_disk_install (or is it alt_disk_clone). lsvg-p SANVG > vpaths in SANVG. Or, using the at and batch commands, you can run commands at a later time or when the system load level permits. If so, you could put the mksysb on another disk (obviously not hd0). alt_disk_install fileset to use alt_disk_install. Cleanup is executed to end the migration. Using alt_disk_mksysb to install a mksysb image on another disk. alt_disk_install. 2 ML 5 using NIM alternate disk installation on 5 servers After migration, I am not able to do mksysb on these servers Here are the errors =====. When the disks containing this altinst_rootvg are moved to another host and then booted from, AIX will run cfgmgr and probe for any hardware, adding ODM information at that time. Take all Configuration backup. 1 mksysb image. mksysb | mksysb | mksysb aix | mksysb -p | mksysb usbms0 | mksysb 0301150 | mksysb backup | mksysb exclude | mksysb meaning | mksysb rootvg | mksysb restore | m. ppt), PDF File (. First, make sure every logical volume in the rootvg has a name that consists of 11 characters or less (if not, the alt_disk_copy command will fail). We are migrating systems from AIX 5300-06 to 6100-02. nimadm aktualisiert dann Spot und LPP-Source, so dass ein Client auch auf einen niedrigeren Stand migriert werden kann als es dem Stand des NIM-Servers entspricht. rte» und «bos. 2 - Rename it using rendev command on vios using "root": oem_setup_env rendev -l vhost0 -n vhost37 That is it, you can check it using the lsmap command again and dont forget to rebuild yours VTD using the command mkvdev as padmin. Then that mksysb image is restored to unused disks in the current system using alt_disk_mksysb, again using the -O option to perform a device reset. We thought of using the alt_disk_copy command to clone rootvg to a disk on the new SAN, but then we would have faced the same difficulty as with the mksysb command. nimadm then updates spot and LPP source with these two filesets. Recently we had a client requirement for configure all existing AIX in NIM. hdisk1 and has to be moved back to the original harddisk0. Install the "bos. You can use the below script to find out whether you can able to perform a multibos with current space available on the same disk (rootvg). APARTXT IV21335 = ALT_DISK_MKSYSB REWORK OF FUNCTION CREATE_BOOT_IMAGE _NAME The reboot from a multibos install may fail with LED 517 The reboot from a multibos install may fail with LED 517 APARTXT IV21938 = DURING NIMADM IN PHASE 8 MKNOD RETURN CODE INCORRECT LY SET During a nimadm operation in phase 8 the mknod command fails with the. The command to create alternate disk installation is sample, but you should be careful of syntax, because the results can be catastrophic # nohup alt_disk_install -BC -e /etc/exclude. The filesets required for the alt commands are:. Does anyone have a link to the procedures since the doc I was for a 5. Once the process is finished , the system reboots from the alternate disk, either as mksysb or cloned rootvg. Read-write CD drives have become fairly inexpensive, and media is very inexpensive (more so than tape). rte" and "bos. ENDSET COMPID FOR PTF U852282 = 5765H4000,710 PRODID FOR PTF U852282 = 5765H40,Alternate Disk. In many ways it's similar to mksysb, but for non-rootvg volume groups. # cat /etc/exclude. alt_disk_copy -d hdisk1 -b update_all -l /home/AIX72TL02 above command will clone existing OS to hdisk1 and after successful cloning update the OS on cloned disk. A very good article about alternate disk installs can be found on developerWorks. With this option, a mksysb tape or image is loaded onto an alternate disk and serves as a rootvg. Use nimadm to migrate the mksysb image from AIX 6. Unfortunately, that would involve some extra backups and possibly more extensive downtime. I did this migration from 6. data file from mksysb and check if the system was mirrored. boot_images. # alt_disk_mksysb -m /tmp/mksysb/CWPRON1. I run a mksysb and it just backs up 4 files! I also can't do an alt_disk_copy that also fails. ls-al /dev/SANVG > Major No of SANVG.