On Sat, Jan 16, 2010 at 05:15:18PM +0100, Kay Sievers wrote:
> On Fri, Jan 15, 2010 at 22:43, Karel Zak <kzak@xxxxxxxxxx> wrote:
> > I understand your point of view, and I have no problem to add to
> > blkid all necessary functionality for compatibility with your
> > point of view. But I have doubts that udev will use it.
> >
> > All this was discussed 2 (?) years ago. The current blkid behavior
> > is based on the results from the discussion.
> >
> > I'll
> > - add an option to allow run blkid in less paranoid mode (return
> > the first detected superblock)
>
> We can definitely not use it. Filesystem-probing and auto-mounting is
Expected answer :-)
> not meant to return wild guesses, and risk to destroy data by careless
> and dumb optimizations.
I found something interesting in the old vol_id now. The old code does
not apply the paranoid probing method (check for all filesystems) to
devices smaller than 1.4MB:
/*
* We probe for all known filesystems to find conflicting signatures.
[...]
* We do not want to read that many bytes from probed
* floppies, skip volumes smaller than a usual floppy disk.
*/
I think we can use the same logic in blkid. Comment?
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
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