On Dec 14 16:04, Eric Blake wrote:
> >
> > Btw., I just applied a patch which implements O_DIRECT, which will be
> > available in the next snapshot. The same restriction as on Linux
> > applies, which is, the buffers used in read/write operations must be
> > sector-aligned. Note that using O_DIR
>
> Btw., I just applied a patch which implements O_DIRECT, which will be
> available in the next snapshot. The same restriction as on Linux
> applies, which is, the buffers used in read/write operations must be
> sector-aligned. Note that using O_DIRECT requires to rebuild the
> application, so
On Dec 13 19:05, Loh, Joe wrote:
> We downloaded cygwin-inst-20051213.tar.bz2 and implemented the solution
> recommended below. So far, our cursory testing indicates that we are
> able to do unbuffered read. However, we are not seeing any "bug" that
> was referenced here. What is the "bug" that
(3,
0x10EED60, 1), errno 0
Thanks,
Joe
-Original Message-
From: Corinna Vinschen [mailto:[EMAIL PROTECTED]
Sent: Thursday, December 08, 2005 4:57 AM
To: cygwin@cygwin.com
Subject: Re: Error reported dd'ing close of end of block device with
skip
On Dec 7 19:35, Corinna Vinschen
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
According to Corinna Vinschen on 12/8/2005 3:30 AM:
>
> Hey, cool idea! There's no definition of O_DIRECT in Cygwin so far, but
> this sounds like a worthwhile extension, at least for disk and tape
> devices, but maybe also for files. This won't be
On Dec 7 19:35, Corinna Vinschen wrote:
> On Dec 7 11:55, Loh, Joe wrote:
> > QUESTION:
> >
> > Is there a way in Cygwin to do a read of a block device using "C" that
> > does not do a read-ahead? We needed to develop an application that will
> > issue the exact transfer size to the target de
On Dec 7 16:47, Loh, Joe wrote:
> Thank you ... This will work. Any plans on supporting O_DIRECT flag in
> open()? We believe this effectively gives unbuffered I/O. Please
> correct if we are making the wrong assumption.
Hey, cool idea! There's no definition of O_DIRECT in Cygwin so far, but
t
>> On Dec 7 11:55, Loh, Joe wrote:
>> QUESTION:
>>
>> Is there a way in Cygwin to do a read of a block device using "C"
that
>> does not do a read-ahead? We needed to develop an application that
>> will issue the exact transfer size to the target device as requested.
>> Looking at the strace
On Dec 7 11:55, Loh, Joe wrote:
> QUESTION:
>
> Is there a way in Cygwin to do a read of a block device using "C" that
> does not do a read-ahead? We needed to develop an application that will
> issue the exact transfer size to the target device as requested.
> Looking at the strace, it appear
> Searching the archive
>
> http://cygwin.com/cgi-bin/htsearch?config=htdig&words=dd+eom
>
> reveals a thread "Bug in dd ?? at EOM" which starts here:
>
> http://sourceware.org/ml/cygwin/2005-09/msg00878.html
>
> Btw, have you tried the latest snapshot from
http://cygwin.com/snapshots/ ?
>
>
> C
On Dec 6 15:56, Loh, Joe wrote:
> Hello Folks,
> Here's the second part of the problem. The follow on from a previous
> issue observed as reported in "Size difference reported by
> /proc/partitions and lseek(SEEK_END) on block device."
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