On Sun, Jan 09 2000, Stanislav Malyshev wrote:
> I've noticed a nasty problem with CD on 2.2.x including latest 2.2.14. The
> problem manifests itself in corrupting every large file that is read from
> CD. Corruption is repeatable, but not happen always in the same place in
> the file - i.e., if I repeat the copy in small amount of time, it's the
> same place, but if I wait some time, unmount the CD and mount it back,
> etc., place of corruption can change.
>
> It doesn't seem to be hardware related bug, since if I downgrade to 2.2.5
> from Redhat 6.0 RPMs, problem disappears.
>
> The application that always triggers the bug is rpm - when it is run on
> large RPM from the CD, it says "unpacking of archive failed: cpio: Bad
> magic", but it isn't program-related too - copy to HD makes the same
> result (file is corrupted). No kernel messages or other errors are
> reported - kernel thinks the file is OK, but it isn't.
>
> The CD is SAMSUNG SC-140F.
The Red Hat supplied kernel doesn't utilize DMA per default, AFAIK.
It looks as if you are using DMA with 2.2.14, and that is probably
what makes the difference. Have you tried switching DMA on or off?
Did that change anything?
-- * Jens Axboe <axboe@image.dk> * Linux CD-ROM Maintainer * http://www.kernel.dk- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Jan 15 2000 - 21:00:14 EST