Re: [BUG] Sym. 53c895 fails accessing tape device - kernel 2.9.1-rc1-bk1 trough rc2-bk12

[James Bottomley <James.Bottomley@HansenPartnership.com>]

On Wed, 2004-09-29 at 11:47, Alexander Stohr wrote:
> in the beginning it merely looks like this:
>   kernel: st0: Incorrect block size.

I think this is the key to the problem.  It looks like some sort of tape
error.

> then it changed slightly to this:
>   kernel: sym1:4:0:phase change 6-7 9@37d30f84 resid=6. 
>   kernel: sym1:4:0:phase change 6-7 9@37d30f84 resid=6. 

These are normal messages printed during sym2 negotiation.  The way it
does negotiation changed recently, so these became more prevalent

Kai, could you look into this?

When I haul an old DAT tape out of the cupboard and attach it to a
sym1010, it all seems to work until I try to manipulate the block size,
so

dd of=/dev/nst0 if=linux-2.6.8.tar.gz

works just fine ... I can read and write to the tape

dd of=/dev/nst0 if=linux-2.6.8.tar.gz obs=16k

fails with the kernel message

st0: Write not multiple of tape block size.

And then I start to get errors from the tape device.

It looks like the block size setting has been broken somehow.

James