On Fri, Jan 07, 2005 at 03:40:12PM -0500, Brian Cuttler wrote:
> 
> samar 24# mt -f /dev/sdlt2 blksize
> 
>  Recommended tape I/O size: 131072 bytes (256 512-byte blocks)
>  Minimum block size: 4 byte(s)
>  Maximum block size: 16777212 bytes
>  Current block size: Variable
> 
> I am using /dev/sdlt2 link to /dev/rmt/tps1d4nrns - no rewind, non-byte swap
> device. I am no longer using the trailing 'v' device which would normally
> provide variable length blocks.
> 

Brian,
as you were using the 'v', might the data on the tapes have been written with
some > 32K block size?  All of your dd's seem to fail after the header.

How about trying a couple of mt fsf # to some file in the middle (on the
no rewind device), then do dd's with bs=128k and/or bs=1024k and/or bs=16384k.

jl
-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
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