Blocking the access to the device files.

Mulyadi Santosa mulyadi.santosa at
Wed Dec 29 13:06:13 EST 2010

Hi Greg :)

On Thu, Dec 30, 2010 at 00:01, Greg Freemyer <greg.freemyer at> wrote:
> My guess is that it is more complex than that.
> Some filesystems have issues if the raw drive is read while the
> filesystem is mounted.  I think it is caused by inconsistencies in the
> various cache's.  ie. iirc, At least in the 2.4 kernel there was not a
> single unified cache for block layer and filesystems.  So doing raw
> reads of underlying device while it was mounted could cause the caches
> to get out of sync.

Oh, that issue? well, in that case, I have no prevent such thing...I
was offering the previous idea since I have very little cues on what
Prasad mean by "disabling access"....


Mulyadi Santosa
Freelance Linux trainer and consultant


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