Re: Managed mode problem

[Igor Pechtchanski <pechtcha at cs dot nyu dot edu>]

On Tue, 12 Aug 2003, Ronald Landheer-Cieslak wrote:

> On Tue, Aug 12, 2003 at 10:04:21AM -0400, Igor Pechtchanski wrote:
> > On Tue, 12 Aug 2003, Ronald Landheer-Cieslak wrote:
> >
> > > Hello all,
> > >
> > > I was trying to build nn under Cygwin, and found it contains a file called
> > > aux.sh, a file called aux.c and a file called aux.h; none of which Windows
> > > would like, of course.
> > >
> > > Having Cygwin 1.5.2 installed, I thought I'd try out that spiffy new managed
> > > mode, as running `tar xzvf nn-6.6.5.tar.Z' failed miserably (hung until I
> > > killed Bash, tar and gz) so I put my tarball in /foo, which is mounted in
> > > managed mode (see cygcheck.out for details on my system).
> > >
> > > That didn't change the behaviour of tar/gzip much, though, as the process
> > > still seems to hang while untarring the tarball on the managed mount.
> > >
> > > Below are the cygcheck output, the tarball itself and the last stackdump from
> > > gzip. If you need anything else, I'll be happy to provide.
> > >
> > > HTH
> > > rlc
> >
> > Ronald,
> >
> > You might want to run this under strace and search the output for "aux"...
> > See if that provides any clues.  Another thing to try is to create a STC
> > by "touch"ing a file called "aux.c" in a managed directory, then taring it
> > into, say, test.tar, and then trying to untar it.  My guess is that
> > compression has nothing to do with this problem, so you can try creating
> > an uncompressed tar first.  If you can reproduce the problem on this
> > smaller tar archive, an strace (bzipped) should be of a manageable size to
> > post, and would likely be helpful (to CGF if noone else) in finding the
> > problem.
> >       Igor
> I'd been considering that but haven't had the time yet.
> Anyways:
> $ touch aux.x
> touch: setting times of `aux.x': Invalid argument
>
> $ mount
> ...
> c:\foo on /foo type system (binmode,managed)
> ...
>
> $ pwd
> /foo
>
> Strace of touch is available here:
> da43f49aca1b4d825cd3c65d1539d9ed *touch.strace
> http://blytkerchan.chez.tiscali.fr/touch.strace
>
> The managed-ness of the mount doesn't seem to be kicking in..
>     324  1766  225955 [main] touch 1344 fhandler_base::open: 0x214 = CreateFile
>     324 (c:\foo\aux.x, 0x40000000, 0x7, 0x22F9E0, 0x4, 0x2000080, 0)
>
> Oddness is gaping at me: mount clearly reports the mount as managed, but Cygwin
> seems to happily ignore its new feature..
>
> HTH
> rlc

Ronald,

I think there might be a bug in the way managed mode figures special
filenames.  Try simply "touch aux" instead of "touch aux.x".  If that
works, it'll confirm my reading the code.  I'll submit a patch later today
if noone beats me to it.
	Igor
-- 
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     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

"I have since come to realize that being between your mentor and his route
to the bathroom is a major career booster."  -- Patrick Naughton


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