Re: [PATCH] 64 bit scsi read/write

Jonathan Lundell
2001-07-15T05:47:46Z

At 4:02 PM +1200 2001-07-15, Chris Wedgwood wrote:
>On Sat, Jul 14, 2001 at 10:33:44AM -0700, Jonathan Lundell wrote:
>
> What's worse, though the spec is not explicit on this point, it
> appears that the write cache is lost on a SCSI reset, which is
> typically used by drivers for last-resort error recovery. And of
> course a SCSI bus reset affects all the drives on the bus, not
> just the offending one.
>
>Doesn't SCSI have a notion of write barriers?
>
>Even if this is required, the above still works because for anything
>requiring a barrier, you wait for a positive SYNCHRONIZE CACHE

Sure, if you keep all your write buffers around until then, so you
can re-write if the sync fails. And if you don't crash in the
meantime.
--
/Jonathan Lundell.