05/30/95 Recovery from an LED C31 in AIX 3.1 or 3.2 SPECIAL NOTICES Information in this document is correct to the best of our knowledge at the time of this writing. Please send feedback by fax to "AIXServ Information" at (512) 823-4009. Please use this information with care. IBM will not be responsible for damages of any kind resulting from its use. The use of this information is the sole responsibility of the customer and depends on the customer's ability to eval- uate and integrate this information into the customer's operational environment. +----------------------------------------------------------+ | | | NOTE: The information in this document has NOT been | | verified for AIX 4.1. | | | +----------------------------------------------------------+ CAUSES OF AN LED C31 An LED C31 during IPL on a RISC System/6000 in AIX 3.1 or 3.2 may be caused by an incorrect console configuration, by a corrupt ODM (Object Data Manager), or by a non-terminal device (such as a modem or printer) plugged into port 1 or 2. SUMMARY OF THE RECOVERY PROCEDURE To resolve the LED C31, check for a non-terminal device plugged into port 1 or 2. If that is not the problem, you will need to boot up in Service mode and change the console with the "chcons" command as in the following steps. STEPS 1. Check for a non-terminal device plugged into serial port 1 or 2. If there is not such a device, go to step 2. If there is one, unplug it or turn it off. Then reboot the machine with the key in Normal position. You do not need to continue with these steps. 2. Turn the key to the Service position. Recovery from an LED C31 in AIX 3.1 or 3.2 1 05/30/95 3. With BOSboot diskettes or tape OF THE SAME VERSION AND LEVEL AS THE OPERATING SYSTEM, boot the system. +----------------------------------------------------------+ | | | WARNING: If you boot a 3.2 system with 3.1 media, or | | boot a 3.1 system with 3.2 media, then you will not be | | able to use the standard scripts (getrootfs or | | /etc/continue) to bring your workstation into full main- | | tenance mode. | | | | Moreover, performing the scripts on a 3.1 system with | | 3.2 boot media may actually remove some files and | | prevent your system from booting successfully in normal | | mode until missing files (/etc/mount and /etc/umount) | | are replaced on the disk. | | | +----------------------------------------------------------+ NOTES: a. For information on BOSboot diskettes, refer to InfoExplorer or order fax #2462 from 1-800-IBM-4FAX (or 415-855-4FAX outside the U.S. from a fax machine phone). b. If booting from diskettes, when you see LED c07, insert the next diskette. This may be the optional display extensions diskette (required for AIX 3.2.5) or the display diskette. c. If you have AIX 3.2.5, used a fddi network install, and selected that option for the install device, you will need the communications extensions diskette. If this diskette is not available, you can build it from another system with fddi installed or call your branch office for assistance. Follow the prompts to the installation/maintenance menu. 4. Choose the maintenance shell (option 5 for AIX 3.1, option 4 for AIX 3.2). 5. Determine the hdisk# to use with the getrootfs or /etc/continue command. If you have only one disk, then "hdisk0" is the proper hdisk# to use. If you have more than one disk, do the following: o FOR AIX 3.2.4 OR LATER: Run getrootfs The output indicates the disk that should be used with getrootfs in the next step. o FOR AIX 3.1 TO 3.2.3E: Run Recovery from an LED C31 in AIX 3.1 or 3.2 2 05/30/95 lqueryvg -Atp hdisk# | grep hd5 for each hdisk# (hdisk0, hdisk1, etc.) until you get output that looks like: 00005264feb3631c.2 hd5 1 The exact output you get will be different but will follow the form large_number.x hd5 1 You may find more than one disk has this output. These will all be disks which belong to the rootvg volume group. You may use any of the disks identi- fied to be in rootvg in the following step. 6. Now access the rootvg volume group by running /etc/continue (for AIX 3.1) or getrootfs (for AIX 3.2). ('#' is the number of the fixed disk, determined in step 5.) For AIX 3.1 only, run /etc/continue hdisk# For AIX 3.2 only, run getrootfs hdisk# If you get errors from /etc/continue or getrootfs, do not continue with the rest of this procedure. Correct the problem causing the error. If you need assistance correcting the problem causing the error, contact one of the following: o local branch office o your point of sale o 1-800-CALL-AIX (to register for fee-based services) All of the above avenues for assistance may be billable. 7. For AIX 3.2.4 or greater, enter the following command: ODMDIR=/dev/objrepos 8. Change the system console with the following command. The change will take effect at the next startup of the system. If your console is an hft (6091), run the following: chcons -a login=enable /dev/hft/0 If your console is a tty (ibm3151), run the following: | chcons -a login=enable /dev/tty0 9. With the key in Normal position, run Recovery from an LED C31 in AIX 3.1 or 3.2 3 05/30/95 shutdown -Fr 10. If the system does not stop at LED C31 during reboot, you do not need to continue with these instructions. If the system still stops on LED C31 during reboot and you are running AIX 3.1, repeat steps 2-6 and then go to step 11. If the system still stops on LED C31 during reboot and you are running AIX 3.2, repeat steps 2-5 and then go to step 12. 11. For AIX 3.1 only, run the following commands, which will remove much of the system's configuration, saving it to a backup directory. mkdir /etc/objrepos/bak cp /etc/objrepos/Cu* /etc/objrepos/bak cp /etc/objrepos/boot/Cu* /etc/objrepos Determine which disk is the boot disk with the lslv command. The boot disk will be shown in the PV1 column of the lslv output. lslv -m hd5 Save the clean ODM database to the boot logical volume. ('#' is the number of the fixed disk, determined with the previous command.) savebase -d /dev/hdisk# Go to step 13. 12. For AIX 3.2 only, run the following commands, which will remove much of the system's configuration, saving it to a backup directory. ('#' is the number of the fixed disk, determined in step 5.) getrootfs hdisk# sh mount /dev/hd4 /mnt mount /dev/hd2 /usr mkdir /mnt/etc/objrepos/bak cp /mnt/etc/objrepos/Cu* /mnt/etc/objrepos/bak cp /etc/objrepos/Cu* /mnt/etc/objrepos /etc/umount all exit Determine which disk is the boot disk with the lslv command. The boot disk will be shown in the PV1 column of the lslv output. lslv -m hd5 Save the clean ODM database to the boot logical volume. ('#' is the number of the fixed disk, determined with the previous command.) savebase -d /dev/hdisk# Recovery from an LED C31 in AIX 3.1 or 3.2 4 05/30/95 Continue with step 13. 13. Turn the key to Normal position and run shutdown -Fr 14. If LED C31 still occurs when you reboot your system and you need further assistance with this problem, contact one of the following: o local branch office o your point of sale o 1-800-CALL-AIX (to register for fee-based services) All of the above avenues for assistance may be billable. Recovery from an LED C31 in AIX 3.1 or 3.2 5 05/30/95 READER'S COMMENTS Please fax this form to (512) 823-4009, attention "AIXServ Informa- tion". You may also e-mail comments to: elizabet@austin.ibm.com. These comments should include the same customer information requested below. Use this form to tell us what you think about this document. If you have found errors in it, or if you want to express your opinion about it (such as organization, subject matter, appearance) or make sug- gestions for improvement, this is the form to use. If you need technical assistance, contact your local branch office, point of sale, or 1-800-CALL-AIX (for information about support offer- ings). These services may be billable. Faxes on a variety of sub- jects may be ordered free of charge from 1-800-IBM-4FAX. Outside the U.S. call 415-855-4329 using a fax machine phone. When you send comments to IBM, you grant IBM a nonexclusive right to use or distribute your comments in any way it believes appropriate without incurring any obligation to you. NOTE: If you have a problem report or item number, supplying that number may help us determine why a procedure did or did not work in your specific situation. Problem Report or Item #: Branch Office or Customer #: Be sure to print your name and fax number below if you would like a reply: Name: Fax Number: ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ END OF DOCUMENT (ledc31.krn, 4FAX# 1991) Recovery from an LED C31 in AIX 3.1 or 3.2 6