Re: [PATCH] 64 bit scsi read/write

Chris Wedgwood
2001-07-15T14:39:33Z

On Sun, Jul 15, 2001 at 03:44:14PM +0200, Daniel Phillips wrote:

The only requirement here is that the checksum be correct. And
sure, that's not a hard guarantee because, on average, you will
get a good checksum for bad data once every 4 billion power events
that mess up the final superblock transfer. Let me see, if that
happens once a year, your data should still be good when the
warrantee on the sun expires. :-)

the sun will probably last a tad longer than that even contuing to
burn hydrogen, if you allow for helium burning, you will probably get
errors to sneak by

Surely it can't be that *all* IDE disks can fail in that way? And
it seems the jury is still out on SCSI, I'm interested to see
where that discussion goes.

Alan said *ALL* disks appear to lie, and I'm not going to argue with
him :)

I only have SCSI disks to test with, but they are hot-plug, so I guess
I can write a whole bunch of blocks with different numbers on them,
all over the disk, if I can figure out how to place SCSI barriers and
then pull the drive and see what gives?

--cw