Unix

IBM Certification Study Guide AIX Problem Determination by IBM Redbooks

By IBM Redbooks

This IBM Redbook is designed as a research advisor for execs wishing to organize for the AIX 5L challenge selection instruments and methods certification examination as a particular process examine so that it will in attaining the IBM eServer qualified complicated Technical professional - pSeries and AIX 5L certification.This IBM Redbook is designed to supply a mixture of concept and useful adventure wanted for a common knowing of the subject material. It additionally offers pattern questions that would assist in the evaluate of non-public growth and supply familiarity with the kinds of questions that would be encountered at the exam.This book doesn't change useful adventure, neither is it designed to be a stand-alone advisor for any topic. as an alternative, it really is a good device that, while mixed with schooling actions and event, could be a very precious training advisor for the examination. no matter if you're making plans to take the AIX 5L challenge decision instruments and strategies certification examination, or when you simply are looking to validate your AIX abilities, this redbook is for you.This e-book used to be up to date to incorporate the recent content material incorporated in attempt 235, that is in line with AIX 5L model 5.1.

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2. At the installation menu, choose Start Maintenance for System Recovery. 3. On the next menu, choose Access a Root Volume Group. 4. A list of accessible disks is shown. Choose the rootvg disk. 5. Finally, choose Access this Volume Group and start a shell when you want to recreate the BLV. Change the bootlist or forgotten root password. Choose Access this Volume Group and start a shell before mounting file systems if the file systems or the jfslog in rootvg are corrupt. 2 PCI systems When booting PCI systems, there are important differences from the MCA systems.

At this stage, the LED shows 511. Chapter 3. boot script is passed to the parameter 2. The first part of this phase is shown in Figure 3-7. ipl_varyon mount /dev/hd4 mount /usr mount /var; copycore; umount /var swapon /dev/hd6 Figure 3-7 Boot phase 2, part one During this phase, the following steps are taken. 1. The rootvg volume group will be varied on with the special ipl_varyon command. If this command is not successful, one of the following LED codes will appear: 552, 554, or 556. 2. After the successful execution of ipl_varyon, the root file system (/dev/hd4) is mounted on a temporary mount point (/mnt) in RAMFS.

If the system runs into problems while mounting the /usr from disk (locally, not a network mount), you will get the same error. Fix this problem using the same procedure as you would for any other rootvg file system corruption. 4 The alog command Up until this stage, the system has not yet configured the console, so there is no stdout defined for the boot processes. At this stage, the alog command is useful. The alog command can maintain and manage logs. All boot information is sent through the alog command.

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