Re: mv should call fsync before erasing source file

[drwowe]

Jim Meyering wrote:
> 
> Maybe you want a new option to enable this behavior when
> does not do an atomic rename, but it will never be the
> efault, because it would cause a huge performance hit
> when copying many files between devices.
> 
True, it's the classic reliability vs performance tradeoff, although in the
case of a batch move, the algorithm could be changed to "copy many, sync
many, remove many" in that order.

Anyway, a command line option would be better than nothing.  Just the
existence of the option and a short blurb in "mv --help" could potentially
make someone reading the help text aware who might otherwise not be.  Of
course there are workarounds (such as using find/dd/rm in a script as you
suggest, in fact I might just write such a script and alias it to mv) but
I'm especially concerned for a newbie who might not even know there was a
potential for a problem.
 
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