ArGest Backup User Guide

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  5. Appendix J – Advanced BRUTAB Settings

Appendix J – Advanced BRUTAB Settings

Overview
This section of the user’s guide explains the advanced settings of the brutab file. These settings are either numeric or boolean entries. NOTE: These are advanced settings and should only be changed if you are completely competent in your devices specific responses. We do suggest that these settings remain unchanged in your BRUTAB file.

Name Type Meaning
advance Boolean reads/writes advance media even when errors occur (most 9-track tape drives, few cartridge drives) WARNING: do not set if not true!
ederr numeric errno for end of device reached NOTE: “ederr” should be different than other **err’s
eject boolean eject media after use (Macintosh style)
format boolean format media if necessary
freer numeric errno for read of unformatted media
fewer numeric errno for write of unformatted media
maxbufsize numeric maximum I/O buffer size for this device. Is set to 0 if unspecified or no limit.
noautoscan boolean disables automatic scanning of the archive after creation of an archive **IF YOU SPECIFY THIS BOOLEAN YOU WILL DEFEAT BRU’S AUTOMATIC ERROR CHECKING OF YOUR ARCHIVE.
prerr numeric errno for partial reads
pwerr numeric errno for partial writes
shmall numeric limit on total amount of shm used NOTE: applies only if “-D”, double buffering, is specified when invoking bru.
shmcopy boolean tells bru that the archive device driver cannot do I/O directly from shared memory. NOTE: applies only if “-D”, double buffering, is specified when invoking bru.
shmmax numeric limit on size of each shared memory segments NOTE: applies only if “-D”, double buffering, is Specified when invoking bru.
Shmseg numeric limit on number of shared memory segments NOTE: applies only if “-D”, double buffering, is specified when invoking bru.
wperr numeric errno for write protected media
zrerr numeric errno for zero length reads
zwerr numeric errno for zero length writes.