On Sun, Mar 30, 2008 at 02:17:10PM +0300, Marius Gedminas wrote:
> On Sun, Mar 30, 2008 at 10:57:37AM +0000, Andrew Flegg wrote:
> > On Sun, Mar 30, 2008 at 10:52 AM, Marius Gedminas <marius at pov.lt> wrote:
> > > Something weird is happening to my N810's internal flash memory (the
> > > one with the VFAT-formatted 2 gig "internal memory card", not the 256
> > > meg jffs2 root filesystem).
> > >
> > > It appears as if writing near the end of the device wraps around and
> > > destroys the data at the beginning. I can reproduce it like this:
...
> Also, I can get a fs error in dmesg if I deliberately create a smaller
> filesystem (1.7 gig) with
>
> sudo mkdosfs -F 32 /dev/sdb1 1700000
>
> and then fill it up with a single big file.
>
> If I reduce the filesystem size to just 1000000 blocks, I can fill it up
> with no kernel complaints in dmesg.
It's not a bug in the vfat driver. I can fill up a 2 gig vfat filesystem
image mounted via the loop device without triggering the bug.
Marius Gedminas
--
An algorithm must be seen to be believed.
-- D.E. Knuth
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