Re: [PATCH] 64 bit scsi read/write

From: Chris Wedgwood (cw@f00f.org)
Date: Sun Jul 15 2001 - 09:39:11 EST


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
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