X-Spam-Check-By: sourceware.org Date: Mon, 12 Jun 2006 17:19:00 +0200 From: Corinna Vinschen To: "'cygwin@cygwin.com'" Subject: Re: Win2003 server and LTO tape drive Message-ID: <20060612151900.GC24199@calimero.vinschen.de> Reply-To: cygwin@cygwin.com Mail-Followup-To: "'cygwin@cygwin.com'" References: <6E7C3053253B934BA07CA1DB8DBF27580484C2CA@fsfspm35> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6E7C3053253B934BA07CA1DB8DBF27580484C2CA@fsfspm35> User-Agent: Mutt/1.4.2i Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On May 3 08:40, Cano Reuben Contr 412 TW/EN wrote: > I'm having problems extracting files from a LTO tape with the cygwin tar > command on a Windows 2003 Server . > > Checked my tape device by using "mt -f /dev/st0 status 2", I noticed that > my IBM Ultrium-TD3 has a device name of STK9840. > > How can I change this device type to be LTO_ULTRIUM? You can't. The string is just a string. It's entirely without function otherwise. > How can I change the max block size to be larger than 65536? You can't, unless your SCSI adaptor drivers allows tweaking the scatter/gather buffer sizes in the registry(*). This is not a Cygwin issue, but a very unfortunate limitation in Windows. I found that sometimes even when raising the scatter/gather buffer values, Windows still didn't allow blocks beyond 64K. It faild for me with an Adaptec 7890 (onboard 2940 U2W version), while it worked fine with an Adaptec 19160. To avoid more grey hair, you should better stick to using blocksizes below 64K, if you intend to create portable tape archives. Corinna (*) Typically by setting HKLM/SYSTEM/CurrentControlSet/Services/${adaptor}/Parameters/Device/MaximumSGList, a DWORD value, to 0xff. -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/