Re: SCSI trow USB-STORAGE or SBP2 Debug for buggy device Kernels 2.6.X

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

On Mon, 2006-04-24 at 16:30 -0500, Gustavo Guillermo Pérez wrote:
> Ok, this is what I've got.

Thanks, this is interesting:

> Apr 24 16:12:14 gusgus kernel: sr 1:0:0:0: Device not ready: <6>: Current: 
> sense key=0x2
> Apr 24 16:12:14 gusgus kernel:     ASC=0x4 ASCQ=0x8

That's "LU not ready; long write in progress"

> This Other is cause I left the print outside the brackets, cause I want to see 
> on closing session.

> Apr 24 16:13:10 gusgus kernel: : Current: sense key=0x2
> Apr 24 16:13:10 gusgus kernel:     ASC=0x3a ASCQ=0x0

Yes, that's just medium not present.

So, I could change the long write in progress to a retry.  However, I
suspect the reason we got that return is because this device is untagged
(doesn't accept multiple commands at once) and perhaps a better fix
might be to reduce the queue depth down to one to prevent more than one
command being outstanding at any one time.

James




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