The following reply was made to PR kern/29369; it has been noted by GNATS.

From: Frank Kardel <Frank.Kardel@Acrys.COM>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/29369: ahc driver cannot handle HP LTO 2-SCSI drive
Date: Wed, 05 Oct 2005 08:13:36 +0200

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 Update in LTO/Filemark handling issues:
 
 The FreeBSD(5.x) code uses a similar strategy as in the proposed patch. 
 Christoph Badura thought
 that it would be good to use the mode page setting for EOM handling to 
 define the drives behavior.
 I currently have a failing SDT10000 so I dug around Sony's website and 
 found a more elaborate manual
 even describing all SCSI commands. When glancing through that spec it 
 seemed to me that
 the Sony drives are stuck at a fixed setting for the file mark handling 
 and will deny all requests to
 change that with an error. I assume that this is legal and fear that 
 implementing the parameterisation
 via mode pages may be of limited use. I still have to check the behavior 
 of LTO drives though.
 Maybe we should go the FreeBSD route by making the 1/2FM strategy 
 ioctl-configurable with possibly
 a pre-selection at attachment time if we get enough information from the 
 drive when reading the
 mode pages.
 
 Thoughts?
 
 Frank
 
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