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Date:	Wed, 7 Feb 2007 11:55:45 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: ar 'unable to rename... Invalid cross-device link'
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On Feb  6 16:38, Matthew Woehlke wrote:
> ...anyone have any guesses why rename() can't rename files in the same 
> directory, if the directory is an NFS mount? This causes 'ar' to fail 
> with the error:
> 
> ar: unable to rename 'libcloudobj.a' reason: Invalid cross-device link
> 
> I see this in strace with both 'ar' and 'mv':
> 
>    46  371094 [main] ar 2588 rename: -1 = rename 
> (h:\<...path...>\src\objects\stWBl4pj, 
> h:\<...path...>\src\objects\libcloudobj.a)
> 
> This seems to happen when the file already exists, but rename() only 
> fails on NFS mounts (not local drives). Is this a problem with 'ar', or 
> Cygwin's rename()?

Since you're one of the few running NFS, you should also debug the
situation further.  Apparently the Cygwin rename function fails, but
from your one-liner strace snippet there's no hint at all what happens.
The error should have been mentioned a couple of lines before.  You
should also mention if you use a release version of Cygwin or a
developer snapshot.  You know http://cygwin.com/problems.html, don't
you?


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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