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Re: Bug in dd ?? at EOM
On Sep 26 12:08, Dave Korn wrote:
> ----Original Message----
> >From: Bengt-Arne Fjellner
> >Sent: 26 September 2005 11:43
>
> > When using dd with flags conv=noerror,sync
> > It tries reading after the disc ends.
> >
> > This line in cygwin tries reading past end of media:
> > dd if=/dev/sdd of=kkkkkk bs=512 skip=156280250 conv=noerror,sync
> > dd: reading `/dev/sdd': Input/Output error
> > 21120+0 records in
> > 21120+0 records out
> > 10813440 bytes (11 MB) copied, 1.151 seconds, 9.4 MB/s
> > dd: reading `/dev/sdd': Input/Output error
> > 21120+1 records in
> > 21121+0 records out
> > repeats "forever"
> >
>
> > Stops at end of disk. Whos wrong?
>
> There is very definitely a problem with cygwin vs. dd, which I'm
> investigating. I've seen the same thing with CF memory cards, and initially
> thought it was directly related to the memcard driver, but I was becoming
> convinced it's a generic problem with cygwin's readv, and since you've found
> it shows up on hard drives as well, that confirms it for me. I'll get round
> to it late tonight.
I've applied a patch which tries to workaround the strange behaviour of
Win32 ReadFile when reading beyond EOF. Please give the next developers
snapshot a try.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat, Inc.
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