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