01/24/95 Repairing File Systems with fsck 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. | | | +----------------------------------------------------------+ ABOUT THIS DOCUMENT This document covers the use of fsck (file-system check) in maintenance mode to repair inconsistencies in file systems. This document applies to both AIX 3.1 and 3.2. STEPS 1. Turn the key to the Service position. 2. With BOSboot or installation media 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. | | | +----------------------------------------------------------+ Repairing File Systems with fsck in AIX 3.1 or 3.2 1 01/24/95 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 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. Repairing File Systems with fsck in AIX 3.1 or 3.2 2 01/24/95 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# sh For AIX 3.2 only, run getrootfs hdisk# sh 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. Next, run the following commands to check and repair file systems. (The "-y" option gives fsck permission to repair file systems when necessary.) fsck -y /dev/hd1 fsck -y /dev/hd2 fsck -y /dev/hd3 fsck -y /dev/hd4 For AIX 3.2 only, also run fsck -y /dev/hd9var Also run fsck on any user-created file systems that are in the rootvg volume group. 8. Type "exit" to exit from the shell. The file systems will automatically mount after you type "exit". 9. If you have file systems in a volume group other than rootvg, you may run fsck on them now by running these commands: varyonvg VGname fsck -y /dev/LVname where LVname is the name of your user-defined logical volume. The above commands can be repeated for each user-defined volume group on the system. Repairing File Systems with fsck in AIX 3.1 or 3.2 3 01/24/95 10. With the key in Normal position, issue the reboot command. sync;sync;sync;reboot Repairing File Systems with fsck in AIX 3.1 or 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. 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