Re: limits on raid

On 21 Jun 2007, Neil Brown stated:

I have that - apparently naive - idea that drives use strong checksum,
and will never return bad data, only good data or an error.  If this
isn't right, then it would really help to understand what the cause of
other failures are before working out how to handle them....

Look at the section `Disks and errors' in Val Henson's excellent report
on last year's filesystems workshop: <http://lwn.net/Articles/190223/>.
Most of the error modes given there lead to valid checksums and wrong
data...

(while you're there, read the first part too :) )

-- 
`... in the sense that dragons logically follow evolution so they would
 be able to wield metal.' --- Kenneth Eng's colourless green ideas sleep
 furiously