01/24/95 Recovery from an LED 201 in AIX 3.1 and 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. | | | +----------------------------------------------------------+ WARNING: Please do not use this document if the system is a /usr client, diskless client, or dataless client. CAUSES OF AN LED 201 An LED 201 during IPL is most often caused by a corrupted boot logical volume; however, it can also be caused by a hardware problem. If LED 299 appears before LED 201, a cor- rupted boot logical volume is probably the cause. If LED 299 does not appear, the cause may be hardware. The boot logical volume can become corrupted if the / (root) or /tmp file system is full when the bosboot command is run. This may occur during the installation of updates. SUMMARY OF THE RECOVERY PROCEDURE In the following steps, you will boot in maintenance mode, check the amount of free space in the /dev/hd3 and /dev/hd4 file systems, erase files as necessary, and rebuild the boot image (in case it is corrupted). Then you will check the error log for hardware CHECKSTOP errors. If you find CHECKSTOP errors, contact hardware support (1-800-IBM-SERV). If you do not and if you still get an LED 201, contact your local branch office. STEPS WARNING: Please do not use this document if the system is a /usr client, diskless client, or dataless client. 1. Turn the key to the Service position. 2. With bootable media OF THE SAME VERSION AND LEVEL AS THE OPERATING SYSTEM, boot the system. Recovery from an LED 201 in AIX 3.1 and 3.2 1 01/24/95 +----------------------------------------------------------+ | | | 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. 3. Choose the maintenance shell (option 5 for AIX 3.1, option 4 for AIX 3.2). 4. 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 lqueryvg -Atp hdisk# | grep hd5 Recovery from an LED 201 in AIX 3.1 and 3.2 2 01/24/95 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. 5. 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 4). 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. 6. For AIX 3.2.4 or greater, enter the following command: ODMDIR=/dev/objrepos 7. Run the following commands and note the numbers in the "free" column in the output: df /dev/hd3 df /dev/hd4 8. If the "free" column for either the /dev/hd3 or /dev/hd4 file system shows less than 1000, erase some files from that file system. Some files you may want to delete (if they exist) are Recovery from an LED 201 in AIX 3.1 and 3.2 3 01/24/95 /smit.log, /smit.script /core /etc/core /dev/core /tmp/core Core files in / or /tmp or in any subdirectory of / or /tmp (unless the subdirectory is a separate moint point) may be deleted. Examples of subdirectories of / that you may want to check are /etc, /dev, and any user- created directories. Also check for any tremendously large files in the /dev directory. It is common for a very large file to end up in /dev as a result of a mistyped command (such as backup, tar, or dd). 9. 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 WARNING: Please do not proceed further if the system is a /usr client, diskless client, or dataless client. 10. Recreate the boot image. (hdisk# is the boot disk determined in step 9.) bosboot -a -d /dev/hdisk# 11. Check the error log for hardware CHECKSTOP errors: errpt -a | grep CHECKSTOP If you get output similar to ERROR LABEL: CHECKSTOP then contact hardware support (1-800-IBM-SERV) for assistance with this hardware problem. 12. With the key in Normal position, shutdown the system. shutdown -Fr 13. If LED 201 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 201 in AIX 3.1 and 3.2 4 01/24/95 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 (led201.krn, 4FAX# 1454) Recovery from an LED 201 in AIX 3.1 and 3.2 5