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Re: [PERFORM] Arguments Pro/Contra Software Raid

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Markus Schaber wrote:
> Hi, Scott & all,
> 
> Scott Lamb wrote:
> 
> > I don't know the answer to this question, but have you seen this tool?
> > 
> >     http://brad.livejournal.com/2116715.html
> 
> We had a simpler tool inhouse, which wrote a file byte-for-byte, and
> called fsync() after every byte.
> 
> If the number of fsyncs/min is higher than your rotations per minute
> value of your disks, they must be lying.
> 
> It does not find as much liers as the script above, but it is less

Why does it find fewer liers?

---------------------------------------------------------------------------

> intrusive (can be ran on every low-io machine without crashing it), and
> it found some liers in-house (some notebook disks, one external
> USB/FireWire to IDE case, and an older linux cryptoloop implementations,
> IIRC).
> 
> If you're interested, I can dig for the C source...
> 
> HTH,
> Markus
> 
> 
> 
> 
> -- 
> Markus Schaber | Logical Tracking&Tracing International AG
> Dipl. Inf.     | Software Development GIS
> 
> Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 6: explain analyze is your friend
> 

-- 
  Bruce Momjian   http://candle.pha.pa.us
  EnterpriseDB    http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +


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