linux-kernel - Re: [pnfs] [GIT BISECT] first bad commit: 1f36f774 Switch !O_CREAT case to use of do_last()

Open Source and information security mailing list archives

Message-ID: <20100325104924.GV30031@ZenIV.linux.org.uk>
Date:	Thu, 25 Mar 2010 10:49:24 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Benny Halevy <bhalevy@...asas.com>
Cc:	Boaz Harrosh <bharrosh@...asas.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	"J. Bruce Fields" <bfields@...i.umich.edu>,
	pNFS Mailing List <pnfs@...ux-nfs.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Doug Nazar <nazard.lkml@...il.com>,
	Trond Myklebust <Trond.Myklebust@...app.com>
Subject: Re: [pnfs] [GIT BISECT] first bad commit: 1f36f774 Switch !O_CREAT
 case to use of do_last()

On Thu, Mar 25, 2010 at 12:22:31PM +0200, Benny Halevy wrote:
> On Mar. 25, 2010, 12:12 +0200, Al Viro <viro@...IV.linux.org.uk> wrote:
> > On Thu, Mar 25, 2010 at 11:39:38AM +0200, Boaz Harrosh wrote:
> > 
> >> It makes no difference, fails just the same. Would an "strace" help?
> > 
> > It might, especially if you ran it for identical repositories on local
> > fs and on NFS; at least that way it would be possible to see where do
> > they diverge...
> > _______________________________________________
> > pNFS mailing list
> > pNFS@...ux-nfs.org
> > http://linux-nfs.org/cgi-bin/mailman/listinfo/pnfs
> 
> ext3 fs exported on the server
> client mount -t nfs4 localhost:/ /mnt/localhost
> $ strace git status
> ...
> open(".git/objects/pack", O_RDONLY|O_NONBLOCK|O_DIRECTORY|0x80000) = -1 EISDIR (Is a directory)

Interesting.  It is a directory, indeed, but why the hell does that call
fail with -EISDIR?

Does that happen with nfsv3 or is that v4-only?  I'm going to set up v4
server and client and see what happens, but that information could be
useful...
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