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Date:      Wed, 6 Sep 2000 09:06:51 +1000
From:      "Rob Secombe" <robseco@teksupport.net.au>
To:        "FreeBSD ISP" <freebsd-isp@FreeBSD.ORG>
Subject:   RE: Wierd tape drive behaviour
Message-ID:  <NBBBJDABOGIOHMHPBBAGKECKCHAA.robseco@teksupport.net.au>
In-Reply-To: <Pine.BSF.4.21.0009060834480.13029-100000@guru.citec.qld.gov.au>

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Hi Colin,

It would fail just doing a 'tar cv /etc'. The weird thing was that it would
intermittently work. I have never had this problem with previous versions of
FreeBSD, it must be a new 'feature' in 4.0. I just tried the -b 128 option
and it did work so I have included it in the backup script and will watch it
over the next couple of days.

Thanks

Rob.

-----Original Message-----
From: Colin Campbell [mailto:sgcccdc@citec.qld.gov.au]
Sent: Wednesday, 6 September 2000 8:37
To: Rob Secombe
Subject: Re: Wierd tape drive behaviour


Hi,

My first guess is that you need to write blocks > 53527 bytes to the tape
drive. Without seeing your "tar" command I can only guess that you need to
add something like "-b 128" to the command.

Colin


On Tue, 5 Sep 2000, Rob Secombe wrote:

> >
> >I have recently built a 'samba server' based on FreeBSD 4.0 for one of
our
> customers. All is working perfectly except for the backup. The customer
had
> an Wangdat 3100 in their old Novell server which they asked if we could
> use. As that amount of data they had to back up would easily fit and the
> tape drive was working fine with Novell/Arcserve, I said "sure". I spoke
> too soon. The tape subsystem intermitently works but the majority of the
> time it reports ther following error.
> >
> >/usr/bin/tar: can't write to /dev/rsa0 : Invalid argument
> >
> >and syslogs:
> >
> >(sa0:sym0:0:6:0): Invalid request.  Variable block device requests must
be
> between 53257 and -1 bytes
kk




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