SCSI Tape problems with 2.2.14 and on

[Marc SCHAEFER]

Kay Diederichs <Kay.Diederichs en uni-konstanz.de> wrote:
> I find that the st module unloads itself after some time (a few hours?)

A few minutes, when not used, through kmod (2.2.x) or kerneld (2.0.x).

> the SCSI module and the reloading st (which loads the SCSI module)
> brings the tape back to life.

Presumably the tape needs a SCSI reset for some reason (can be because
of a Linux bug).

> I'd say that the st module should not be allowed to unload (but don't
> know how that can be achieved).

Do one of:
- force the st module to be loaded at boot time
  On Debian:  echo st >> /etc/modules
  Or add in rc.local or similar:  /sbin/insmod st
  [this will additionnally fix the `not enough buffers' BUG which can
   happen if the st module is loaded and unloaded repetitively and
   memory is very fragmented, leading to performance problems]

- compile the st module in the kernel, not as modules.

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