[Info-vax] strange backup behavior

[AEF]

On Aug 26, 3:23 pm, B Hobbs <bdhobb... at acm.org> wrote:
> On Aug 12, 11:38 am, B Hobbs <bdhobb... at acm.org> wrote:
>
> > It appears that the emulator *may* be causing the behavior.  The
> > emulator can access SCSI devices either directly or via Windows, our's
> > does it directly.  I'm going to change to via Windows and see how that
> > works.
>
> > Another possibility is replacing the emulator's TQK50 driver with the
> > physical_scsi_device driver.  I'll try that if the first change
> > doesn't work out.
>
> The Charon-VAX emulator's configuration had the following lines for
> tape
>   load TQK50 MUA
>   set MUA container[0]="\\.\scsi4:0:6"
> were changed to
>   load TQK50 MUA
>   set MUA container[0]="\\.\Tape0"
> The latest HP SDLT drivers were installed and the whole system was
> rebooted.
>
> ... may I have the log file please? ...
>
> And it worked!  This morning's backup job (Wednesday) took 2.5 hours
> to a tape that already had 43 GB of data, the marker files took about
> 20 seconds to complete.  Yesterday morning's job (Tuesday) with the
> old configuration file took 4.3 hours to a tape with only 3 GB, the
> marker files took 4 minutes and 19 minutes to complete.
>
> I'm tempted to change the configuration file back for one night to
> verify that this is the problem ... maybe next week.
>
> By the by, changed from backup/fast to backup/image after set file/
> nobackup to the database files - the databases have their own backup.
> Still doing backup/journal/list/log, I'd rather too much info than not
> enough.

For yet more info, add /FULL. But that may slow down your backup! \
(o_o)/

>
> Thanks for the advice and help.