Re: Data corruption on IDE disk via USB.

["Rogério Brito" <rbrito@ime.usp.br>]

On Sep 29 2004, Joshua Ross wrote:
> I have an external hard drive with an IDE interface.  This goes through
> a USB2.0-IDE adapter.  I'm getting silent corruption of data when
> copying big files to the drive, but not consistently.  The partition was
> originally ext3, but I'm now mounting it ext2 and sync.  Still getting
> the corruption.  

Which kind of corruption are you seeing? I was seeing some non-silent
problems with an IDE drive connected in a Firewire/USB2 enclosure.

Using it with my iBook on MacOS X is perfectly ok, but trying to use the
drive connected to a USB 1.1 desktop (my main computer) under Linux also
presented problems when copying a large file (one of Dijkstra's talks).

This error, differently from yours, was consistent and produced a lot of
messages regarding the media of the "USB drive" being removed (!) from the
system (while it obviously wasn't) and it left me with corrupted
filesystems (I tried ext2/3, vfat and hfsplus, which are things that both
MacOS X and Linux can read).

I usually tried to use rsync to copy the files, but, if I remember
correctly, the problem would also manifest when using plain cp.



-- 
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  Rogério Brito - rbrito@ime.usp.br - http://www.ime.usp.br/~rbrito
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