On Mer, 2006-03-29 at 21:11 +0200, Krzysztof Halasa wrote:
> # ls -l
> -rw-r--r-- 1 root root 687177728 Mar 29 15:51 img-15.iso
> -rw-r--r-- 1 root root 687177728 Mar 29 15:58 img-15a.iso
>
> The files are just truncated FC5d1 images (57344 bytes missing).
The final partial read is dropped rather than partially completed.
> # cat /sys/block/sr0/size
> 1342264 (i.e., the same as with 2.6.15 + drivers/ide)
>
> # cat /dev/cdrw > img-16a.iso
> cat: /dev/cdrw: Input/output error
>
> # cat /sys/block/sr0/size
> 1342256 (looks like it has been adjusted to .iso image size / 512 when
> the first I/O error occured)
The SCSI layer does this bit for everyone. Its actually not libata or
the PATA drivers that have done the work here. You should find ide-scsi
does the same.
I patched the old IDE driver a bit to try and deal with this and if you
want the patch to hack on and tidy up further feel free.
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