[Tech] Richiesta di chiarimento su una pagina man

[Leandro Noferini]

Ciao a tutti,

no  riesco  a capire  cosa  significhi  questa  opzione del  programma
hdparm:

       -u     Get/set interrupt-unmask flag  for  the  drive.   A
              setting  of  1  permits  the driver to unmask other
              interrupts during processing of a  disk  interrupt,
              which  greatly  improves Linux's responsiveness and
              eliminates "serial port overrun" errors.  Use  this
              feature  with caution: some drive/controller combi­
              nations do not tolerate the increased I/O latencies
              possible when this feature is enabled, resulting in
              massive  filesystem  corruption.   In   particular,
              CMD-640B  and RZ1000 (E)IDE interfaces can be unre­
              liable (due to a hardware flaw) when this option is
              used  with  kernel  versions  earlier  than 2.0.13.
              Disabling the IDE prefetch feature of these  inter­
              faces (usually a BIOS/CMOS setting) provides a safe
              fix for the problem for use with earlier kernels.

Chi me la può spiegare, cortesemente? 

-- 
Ciao
leandro
Email: leandro@firenze.linux.it
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