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- Newsgroups: comp.os.mach
- Path: sparky!uunet!mtxinu!slatteng
- From: slatteng@mtxinu.COM (Dave Slattengren)
- Subject: Re: SCSI tape hangs on close
- Message-ID: <1992Sep3.001758.29679@mtxinu.COM>
- Lines: 19
- Reply-To: slatteng@mtxinu.COM (Dave Slattengren)
- Organization: mt Xinu, Berkeley
- Date: Thu, 3 Sep 92 00:17:58 GMT
-
- > I have just installed a Tandberg 3600 SCSI tape on my Mt Xinu Mach 2.6
- > system. ... when the device (st0) is closed, it hangs the process forever.
-
- If the "hang" is uninterruptible (typing your interrupt character does not
- unwedge the process), then there may be a problem between the SCSI tape rewind
- code and your tape drive (we know it works with HP, DEC, Archive and Wangtek
- tape drives, for example).
-
- If it IS interruptible, then it's the wait for rewind to finish that is not
- completing (the tape driver periodically polls the unit to see if it's "ready"
- after giving a "rewind" command and before before issuing an "allow tape
- unload" command so that the SCSI bus isn't tied up and unusable during tape
- rewind). You DID wait long enough for the tape to fully rewind, no?
-
- We assume that there are no hangs if you use the no-rewind or unload-on-close
- (/dev/nst0 or /dev/ust0) device, right?
-
- Dave Slattengren,
- mt Xinu
-