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Tech Bulletin: Information on Selected Error Messages (Pt 1)
NOVELL TECHNICAL BULLETIN
TITLE: Information on Selected Error Messages (Pt 1)
DOCUMENT ID: TB.P.187
DATE: 5/26/87
PRODUCT: NetWare
PRODUCT VERSION:
SUPERSEDES: NA
SYMPTOM: NA
ISSUE/PROBLEM
NOTE: This document is an addendum to Technical Bulletins TB.P.176 and
TB.P.179.
Volume VOLNAMES have been completely shut down due to channel
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.