>>>>> On Thu, 04 Dec 2008 15:17:54 +0100, Julien Cigar said:
> 
> On Thu, 2008-12-04 at 13:50 +0000, Martin Simmons wrote:
> > >>>>> On Thu, 04 Dec 2008 14:20:37 +0100, Julien Cigar said:
> > > 
> > > On Thu, 2008-12-04 at 12:50 +0000, Martin Simmons wrote:
> > > > >>>>> On Thu, 04 Dec 2008 12:04:34 +0100, Julien Cigar said:
> > > > > 
> > > > > On Thu, 2008-12-04 at 11:33 +0100, Ralf Gross wrote:
> > > > > > Julien Cigar schrieb:
> > > > > > 
> > > > > > Are you sure you need these additional options?
> > > > > > 
> > > > > > >   Hardware End of Medium = no
> > > > > > >   Backward Space Record  = no
> > > > > > >   Backward Space File    = no
> > > > > > >   Fast Forward Space File = no
> > > > > > >   BSF at EOM = yes
> > > > > > >   Two EOF = yes
> > > > > > 
> > > > > > 
> > > > > 
> > > > > Yes, apparently it's needed for FreeBSD :
> > > > > 
> > > > > gemini# pwd
> > > > > /usr/ports/sysutils/bacula-server/files
> > > > > gemini# cat pkg-message.server.in
> > > > 
> > > > Despite the wording in that file, it is not true for all drives.  These
> > > > options work perfectly for me on FreeBSD 4 with an HP LTO-1:
> > > 
> > > Ok.. good to know.
> > > 
> > > To configure the SD I just did a "mt -f /dev/nsa0 geteotmodel", it
> > > replied with 2 filemarks at EOT and then I followed the instructions of
> > > the port maintainer (as I have almost no idea how to adjust most of
> > > those parameters).
> > 
> > Yes, I have to use "mt -f /dev/sa1.ctl seteotmodel 1" to initialize the 
> > drive.
> > This sometimes needs to be repeated after inserting the first tape after
> > booting, though it is persistent after that.
> > 
> 
> This may be a stupid question but, how do you know if you need to set
> EOT to one or two filemarks ? Apparently this one depends of the
> hardware, but I haven't seen anything in my tape manual for that ..

It is difficult to predict (e.g. a DDS4 drive needs 2 marks on the same
machine as the LTO-1).

I would try it with 1 mark and use that if it passes btape's tests.  Use 2
marks only if 1 mark doesn't work.

It also depends on whether any other program uses the tape drive and need some
specific configuration.

__Martin

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