Date: May 26, 1987 Number: 187 Title: INFORMATION ON SELECTED ERROR MESSAGES FOUND IN SFT NETWARE LEVEL I, LEVEL II, AND TTS. VERSION 2.0A. NOTE: This document is an addendum to Technical Bulletins 176 and 179. Volume VOLNAMES have been completely shut down due to channel failure. Occurs on: SFT I, SFT II, TTS. Meaning: The disk channel on which the disk volumes named VOLNAMES are located was shut down because NetWare detected a fatal error on the channel. NetWare detected the failure by timing out or by receiving an invalid interrupt from the Disk Coprocessor board. This is not a fatal error as long as volume SYS is not affected. Any remaining channels containing volumes may continue to operate. If volume SYS is shut down then the system will halt. Cause: This error could be caused by faulty connections or by a faulty Disk Coprocessor board, controller, or disk drive. Solution: Make sure that the Disk Coprocessor board is properly seated and the connections to the controllers and drives are tight and have not become loose or broken. Next, swap components with known good ones until the problem is found. Start with the Disk Coprocessor board and then exchange the controllers and drives. Attempt to configure non-existent drive. Occurs on: SFT I, SFT II, TTS. This is an Abend error. Meaning: The operating system attempted to configure and utilize a disk drive that is not attached to the system. Cause: This error is caused by physically removing a drive from the file server and not removing it from the operating system's configuration with the INSTALL utility. Solution: Run the INSTALL utility and remove all drives from the operating system configuration that are not physically connected to the server. If the system has a Disk Coprocessor board installed, the drive configuration set by the DISKSET utility must also agree with the physical disk configuration. Channel n was shut down due to unrecoverable failure. Occurs on: SFT I, SFT II, TTS. Meaning: Disk channel number n (1, 2, 3, or 4) was shut down after NetWare detected a fatal error on the channel such as a timeout or an invalid interrupt from the Disk Coprocessor board. This is not a fatal error unless the channel with volume SYS has been shut down. Any remaining channels may continue to operate. Cause: This error could be caused by faulty connections or by a faulty Disk CoProcessor Board, controller, or disk drive. Solution: Make sure that the Disk CoProcessor Board is properly seated and the connections to the controllers and drives are tight and have not become loose or broken. Next, swap components with known good ones until the problem is found. Start with the Disk CoProcessor Board and then exchange the controllers and drives. Drive not set up for Hot Fix. Run PREPARE. Occurs on: SFT I. This is an Abend error. Meaning: This error that occurs at bootup time indicates that the drive the server was attempting to use was not set up for SFT Level I Hot Fix. Cause: SFT Level I requires Hot Fix to be set up on all drives before the operating system is booted. Solution: Run PREPARE and set up all of the drives on the server for Hot Fix. Error reading disk redirection information on sector 14. Run PREPARE. Occurs on: SFT I. This is an Abend error. Meaning: This error indicates that the disk redirection information on sector 14 of the currently mounting drive could not be correctly read. Cause: This could be caused by a failure in the drive, Disk Coprocessor board (DCB), controller, or connecting cables. It may also be caused by invalid information written in sector 14 of the disk. Solution: Ensure that the drive, the DCB, and the controller are properly seated, connected, and powered on. If nothing wrong can be detected, run PREPARE on the drive and set up Hot Fix again. If this still does not fix the problem, exchange the above mentioned components one by one with known good ones until the problem component is found. Error reading mirror information on sector 14. Run PREPARE. Occurs on: SFT I. This is an Abend error. Meaning: This error indicates that the disk mirror information on sector 14 of the currently mounting drive could not be correctly read. Although the SFT Level I operating system does not support disk mirroring, it does read and use the information stored in this area of the disk. Cause: This could be caused by a failure in the drive, Disk Coprocessor board (DCB), controller, or connecting cables. It may also be caused by invalid information written on the disk. Solution: Ensure that the drive, the DCB, and the controller are properly seated, connected, and powered on. If nothing wrong can be detected, run PREPARE on the drive and set up Hot Fix again. If this still does not fix the problem, exchange the above mentioned components one by one with known good components until the problem component is found. Error reading redirection table on disk. Run PREPARE. Occurs on: SFT I. This is an Abend error. Meaning: This error indicates that the disk redirection table of the currently mounting drive could not be correctly read. This is the redirection table stored near the end of the disk, not the redirection information stored in sector 14. Cause: This is usually caused by invalid information written on the disk. This could also be caused by a failure in the drive, Disk Coprocessor board (DCB), controller, or connecting cables. Solution: Run PREPARE on the drive and set up Hot Fix again. If more problems are encountered, check the drive, controller, DCB, and connecting cables. Replace any that are bad. Hot Fix turned off on drive nn (volume VOLUMENAME) Occurs on: SFT I, SFT II, TTS. Meaning: This message indicates that SFT NetWare Level I Hot Fix has been turned off on drive number nn which contains the volume named VOLUMENAME. Although this is not a fatal error and it will not halt the server, the file server will not boot up the next time that it is reset unless the problem is taken care of. The problem should be investigated as soon as possible to reduce the risk of losing valuable data. Cause: This message indicates that the disk redirection area that Hot Fix uses has become full and Hot Fix is no longer able to operate. This can be verified by using the DISK console command. This message will also be displayed if Hot Fix fails 10 times in a row to correctly write and verify a block of data that it is attempting to redirect. This indicates severe read/write problems with the disk drive. Solution: A filled disk redirection area usually indicates that the disk drive is having problems and should be repaired or replaced. Hot Fix can be reactivated if the disk redirection area is enlarged by using the PREPARE utility. This is especially pertinent if the redirection area was originally created smaller than normal (the default size is approximately 2 percent of the total disk capacity). Unless the redirection area was extremely small, enlarging it should be considered only a temporary solution until the drive can be replaced. If the disk redirection area is not full, then Hot Fix was turned off due to the failure of Hot Fix to correctly write and verify 10 times in a row. This indicates severe problems with the disk and/or channel. The disk, controller, Disk Coprocessor board and all cables associated with the failed drive should be checked. After replacing the faulty components, COMPSURFing the disk drive may be necessary before reactivating Hot Fix and restoring backed up files. Invalid Disk ReDirection Index table. Occurs on: SFT I, SFT II, TTS. This is an Abend error. Meaning: This error indicates that the Disk Redirection Index for the disk redirection area used for Hot Fix has become corrupted. The Disk Redirection Index contains the mapping information of bad sector numbers and the new sector numbers that the bad sectors have been redirected to. Cause: The most probable cause for this error message is that the Disk ReDirection Index has been overwritten with invalid data. Solution: Run PREPARE to re-setup Hot Fix and rebuild the Disk Redirection Index table. Invalid disk redirection table...duplicate entry. Run PREPARE. Occurs on: SFT I. This is an Abend error. Meaning: This indicates that while the file server was booting it found a duplicate entry in the disk redirection table. Cause: The disk redirection table has become corrupted probably because it has been overwritten with invalid information. Solution: Run PREPARE and re-setup Hot Fix on the drive. Invalid mirror definition table. Run PREPARE. Occurs on: SFT I, SFT II, TTS. This is an Abend error. Meaning: This error indicates that the mirror definition table has been corrupted. The mirror definition table contains the drive mirror assignments. This error is displayed if there are more mirrored drives in the table than the number of installed drives on the system. Although SFT I does not support disk mirroring, it still uses the mirror definition table. Cause: The most probable cause of this error is that the mirror definition table stored on the disk has been overwritten with invalid information. Solution: The PREPARE utility should be run to re-setup the disk mirror assignments and rebuild the mirror definition table. Although SFT NetWare Level I does not support disk mirroring, PREPARE should be run anyway to repair the mirror definition table. Invalid mirror definition table...refers to unknown or duplicate drive. Run PREPARE. Occurs on: SFT I, SFT II, TTS. This is an Abend error. Meaning: This error indicates that the mirror definition table has been corrupted and contains information on nonexistent or duplicate drives. The mirror definition table contains the drive mirror assignments. This error message is displayed if two separate drives defined in the mirror definition table claim the same mirror drive or if a mirror assignment refers to a drive that is not installed on the system. Although SFT I does not support disk mirroring, it still uses the information in the mirror definition table. Cause: The most probable cause of this error is that the mirror definition table stored on the disk has been overwritten by other information. Solution: The PREPARE utility should be run to re-setup the disk mirror assignments and rebuild the mirror definition table. Even though SFT I does not support disk mirroring, PREPARE should be run to repair the mirror definition table. Invalid ReDirection Index table. Occurs on: SFT I, SFT II, TTS. This is an Abend error. Meaning: This error indicates that the Disk ReDirection Index for the disk redirection area used for Hot Fix has become corrupted. The Disk ReDirection Index contains the mapping information of bad sector numbers and the new sector numbers that the bad sectors have been redirected to. This error is generated when a sector is indicated as bad in the ReDirection Index bit map but no entry is found for it in the ReDirection Index table. Cause: The most probable cause for this error message is that the Disk ReDirection Index has been erroneously overwritten with invalid information. Solution: The PREPARE utility should be run to re-setup Hot Fix and rebuild the Disk Redirection Index table and bit map. Invalid redirection table. Run PREPARE. Occurs on: SFT I. This is an Abend error. Meaning: This indicates that while the file server was booting it found inconsistencies in the disk redirection table. Cause: The disk redirection table has become corrupted probably because it has been overwritten with invalid information. Solution: Run PREPARE and re-setup Hot Fix on the drive. Map To Logical request made with invalid physical drive. Occurs on: SFT I, SFT II, TTS. This is an Abend error. Meaning: The routine called "Map to Logical" which translates a physical drive number to a logical drive number was called with an invalid physical drive number. This error is the result of a failed internal consistency check and should never occur. Cause: This error could be caused by a memory failure in the file server and could be attributable to either a hardware failure or poor power line conditioning. A corrupt operating system file might also cause this error. Solution: Reboot the file server. If this error or other Abend errors occur repeatedly, reinstall the operating system and then check the file server's memory and power line conditioning. Mirror copies of disk redirection information do not match. Run PREPARE. Occurs on: SFT I. This is an Abend error. Meaning: This indicates that while the file server was booting it found that the two identical copies of disk redirection information stored on the disk did not match each other. Two copies of this information are stored on the disk to help ensure disk integrity. Cause: One of the two disk redirection tables has become corrupted because it has been overwritten with invalid information or because the server lost power after updating information in one table and before it could update the second table to match it. Solution: Run PREPARE and set up the drive for Hot Fix again. Mirroring not supported under NetWare SFT Level I Occurs on: SFT I. This is an Abend error. Meaning: This error occurs when attempting to boot NetWare SFT Level I on a system that has been set up for disk mirroring under SFT Level II. Disk mirroring is supported only under SFT Level II. Cause: This error would occur if a file server had been setup with the SFT Level II PREPARE utility for disk mirroring and then if SFT Level I was booted on the server. Solution: Use the PREPARE utility to turn off disk mirroring and then reboot the file server. If disk mirroring is desired, boot the file server with SFT Level II instead of Level I. Too many redirection blocks on disk. Run PREPARE or replace the disk. Occurs on: SFT I. This is an Abend error. Meaning: This message indicates that the disk redirection area that Hot Fix uses has become full and the server will not boot until the problem is repaired. Cause: This error is caused by having created the disk redirection table too small or by disk or channel failure causing excessive bad sectors on the disk. Solution: A filled disk redirection area usually indicates severe problems with the disk and/or disk channel. The problem components should be found and repaired or replaced. Hot Fix can be reactivated and operation resumed if the disk redirection area is enlarged by using the PREPARE utility. This is especially pertinent if the redirection area was originally created smaller than normal (the default size is approximately 2 percent of the total disk capacity). Unless the redirection area was extremely small, enlarging it should be considered only a temporary solution until the faulty disk channel component is located and replaced. Components to check include the disk drive, controller, Disk Coprocessor board, and connecting cables. After replacing the faulty components, COMPSURFing the disk drive may be necessary before reactivating Hot Fix with PREPARE and restoring backed up files.