10/13/95 Restoring /usr/ccs/lib/libc.a in AIX 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. | | | +----------------------------------------------------------+ PROCEDURE This procedure MIGHT help to recover the system if someone has accidentally removed /usr/ccs/lib/libc.a. This document applies to AIX 3.2. 1. Turn the key to the Service position. 2. With bootable media OF THE SAME VERSION AND LEVEL AS THE 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). Restoring /usr/ccs/lib/libc.a in AIX 3.2 1 10/13/95 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. 3. Choose the maintenance shell (option 4 for AIX 3.2). 4. Determine the hdisk# to use with the importvg 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 3.2 TO 3.2.3E: Run 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. 5. Run the following commands, replacing "hdisk#" with the disk which contains hd5 (determined in step 4), | a. getrootfs hdisk# sh | b. mount /dev/hd4 /mnt | c. mount /dev/hd2 /mnt/usr | d. cd /mnt Restoring /usr/ccs/lib/libc.a in AIX 3.2 2 10/13/95 6. Insert the mksysb tape in the tape drive and issue the following commands (replacing "X" with the appropriate number for the tape drive device and "Y" with the appro- priate number for the desired tape drive action and density): | NOTE: For more information on rmtX.Y special files, | refer to InfoExplorer or order document number 1896 from | 1-800-IBM-4FAX (or 415-855-4FAX outside the U.S. from a | fax machine phone). | First you will need to set the block size of the tape | drive. By default the device driver in maintenance mode | will be set to a block size 512. | a. tctl -f /dev/rmtX rewind | b. tctl -f /dev/rmtX.Y fsf 1 | c. restbyname -xvqf /dev/rmtX.Y ./tapeblksz | d. cat tapeblksz | e. If the value from step 'd' is not equal to 512 do | this /etc/methods/chggen -l rmtX -a | block_size= | f. tctl -f /dev/rmtX rewind | g. tctl -f /dev/rmtX.1 fsf 3 7. Now use the "pax" command to restore the missing file. Replace "X" with the appropriate number for the tape drive device and "Y" with the appropriate number for the desired tape drive action and density. | a. IF YOU NEED TO RESTORE /usr/ccs/lib/libc.a, follow | these steps: | pax -rvf/dev/rmtX.Y -pmop ./usr/ccs/lib/libc.a | skip to step 8 | b. IF YOU NEED TO RESTORE /usr/ccs/lib DIRECTORY, | follow these steps: | pax -rvf/dev/rmtX.Y -pmop ./usr/ccs/lib | skip to step 8 | c. IF YOU NEED TO RESTORE /usr/ccs/bin DIRECTORY, | follow these steps: | pax -rvf/dev/rmtX.Y -pmop ./usr/ccs/bin | skip to step 8 | 8. Flush the data to disk. | cd /mnt/usr/sbin | ./sync;./sync;./sync | 9. Unmounting /usr filesystem: Restoring /usr/ccs/lib/libc.a in AIX 3.2 3 10/13/95 | cd / | umount /dev/hd2 | If that commands fails then turn key to normal mode and reboot. | 10. Umounting / filesystm: | umount /dev/hd4 | If that commands fails then turn key to normal mode and reboot. | 11. Continuing with getrootfs | exit | 12. Boot the system in normal mode: | turn key to normal position | shutdown -Fr Restoring /usr/ccs/lib/libc.a in AIX 3.2 4 10/13/95 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. 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