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-
- SUBJECT: Invalid channel semaphore state on NETWARE release ERROR
- DATE: Jan. 24, 1990
- OS VERSION: 2.1x
-
-
- GENERAL
- INFORMATION: Error messages
-
- PROBLEM: Error message at the server: INVALID CHANNEL SEMAPHORE
- STATE ON NETWARE RELEASE
-
- SOLUTION: We have seen this error several different times and in
- each case it involves a Future Domain VADD. We contacted
- Future Domain, and they said that the version 2.02 fixes
- this problem. The customer needs to upgrade the VADD.
-
- COMMENTS
- (Optional): Customer needs to contact Future Domain with this error
- message and fix. FAX number: 714-259-5210
-
- (XX) This information has been verified.
-
-
- SUBJECT: Mirroring Using Generic SCSI or Future Domain VADD
- DATE: February 13, 1990
- OS VERSION: 2.15
- REVISION: C
- SHELL
- VERSION: N/A
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-
- GENERAL
- INFORMATION: DCB Generic SCSI: Disk process accesses the drive to
- determine the number of heads and cylinders, rather than
- using a table like the rest of the options in DISKSET.
- If the information cannot be read, the message "ABEND:
- Error adding a Generic Scsi Drive" appears. This
- message means that the OS, COMPSURF, VREPAIR, BACKUP,
- RESTORE, and so on, could not talk to the drive, which
- denotes a hardware problem.
-
- PROBLEM: On a system with mirrored 600 Meg drives, using the
- Generic SCSI option, a customer reported that he
- could not bring the system up after a bad drive was
- removed. His problem was two-fold because in one
- case two DCBS were used and in the other case the
- Future Domain VADD was used.
-
- The Future Domain VADD is similar to the DCB
- "Generic SCSI" option in that it also determines
- the number of heads and cylinders from the drive.
- But, unlike the DCB, that is the ONLY way it can be
- set up. Therefore if one drive is removed it attempts
- to communicate with the missing drive, fails, and
- doesn't add the drive to its table. When the system
- comes up under this condition, the message "ABEND:
- Invalid mirror definition table. Run NETGEN" appears
- because the hardware only recognized one of the drives
- and the master system table has been configured with
- two.
-
- When using the DCB "Generic SCSI" option in the above
- situation, to avoid the error "ABEND: Error adding a
- Generic Scsi Drive," the tendency is to remove the
- "Generic SCSI" drive using DISKSET leaving no drives
- defined on one of the DCBS. When the system comes up
- under this condition, the message "ABEND: Invalid
- mirror definition table. Run NETGEN" appears because,
- again, the hardware only recognized one of the drives
- and the master system table has been configured with
- two.
-
- SOLUTION: With the Future Domain VADD there is no way around
- this other than replacing the missing drive. The
- drive doesn't have to be the same size as the drive
- removed, so long as there IS a drive there for the
- VADD to look at, the system will come up.
-
- With the DCB the workaround for this is to configure
- the DCB which has the bad drive defined for something
- other than "Generic SCSI" using DISKSET (i.e.
- "CDC WRENIII/EMBEDDED SCSI"). The message "Probem
- with drive XX: Error reading disk redirection
- information on sector 14" (where XX is the logical
- drive number of the drive removed) will appear, but
- the system will come up. Likewise with COMPSURF,
- VREPAIR, and so on, the same message will appear.
-
- (XX) This information has been verified.
-
-