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Date:      Sat, 17 Apr 1999 15:22:47 +0200 (MET)
From:      Martin Kraft <kraft@hpcs14.dv.fal.de>
To:        mjacob@feral.com
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: i/o error with larger QIC
Message-ID:  <199904171322.PAA20765@hpcs14.dv.fal.de>
In-Reply-To: <Pine.LNX.4.04.9903171211210.19287-100000@feral-gw> from "Matthew Jacob" at Mar 17, 99 12:12:59 pm

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My problem still exists: I can read QIC DC6150 but not DC 6525.

I last CVSup'd 3.1-stable on april 10.

Matthew Jacob wrote:
> 
> > Matthew Jacob wrote:
> > > 
> > > > sa0: <WANGTEK 5525ES SCSI M75D > Removable
> > > >  ..  Sequential Access SCSI-CCS device
> > > > sa0: 4.32MB/s transfers (4.32MHz, offset 14)       
> > > > 
> > > > I can read DC 6150 tapes (written under 2.2.7) without problems. But it
> > > > is impossible to read from a DC 6525:
> 
> This is slightly ambiguous. How were the DC6525 tapes written?
> 
> Maybe also try the tar as 'tar tb 2'.

su-2.02# tar tb 2
tar: read error on /dev/rsa0 : Input/output error
su-2.02# 

Doesn't help. The tapes where written under 2.2.7 with "tar -cl".

I just tried to write a new tape under 3.1 and write and read it:
all operations succeeded without error but with blocksize 512:

su-2.02# mt status
Mode      Density         Blocksize      bpi      Compression
Current:  QIC-320         512 bytes      16000    unsupported
---------available modes---------
0:        QIC-320         512 bytes      16000    unsupported
1:        QIC-320         512 bytes      16000    unsupported
2:        QIC-320         512 bytes      16000    unsupported
:        QIC-320         512 bytes      16000    unsupported
---------------------------------
Current Driver State: at rst.
---------------------------------
File Number: 0  Record Number: 0
su-2.02# 

So at this moment, I am able to make new backups and restores, which
is the most important thing to me. Anyway I think it would be better,
if my drive could read the old tapes, because QIC tapes should be
exchangeable between different OSs.

Many thanks to everyone contributing to these FreeBSD sources!

Martin Kraft




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