Re: Random scsi disk disappearing

From: Andreas Herrmann
Date: Thu Aug 17 2006 - 12:42:42 EST

On 17.08.2006 15:41 Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx> wrote:

> >> It should be the same as
> >> echo $((7<<6)) >
> >> (which indeed is 448) at runtime, right? (And yes,
> >> is set to y).
> >
> >> Heh oh those magic numbers!.. ;)
> >


> Since 7<<6 seems to indicate a flag, it would be best to have some sysfs

> variable that you can flip using 0 and 1.

It's not a flag. This one sets loglevel 7 for SCSI_LOG_SCAN.
So all SCSI_LOG_SCAN messages might show up.
The loglevel can also be set using sysctl dev.scsi.logging_level.

Anyone interested in a script to conveniently interpret or change the
SCSI logging level? Such a script (scsi_logging_level) exists in the
s390-tools package (version 1.5.3).

If others show interest for this script, maybe a better place can be
found than s390-tools (because it is not really s390-specific).


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