Message-ID: Date: Fri, 18 Nov 2005 16:03:28 -0500 From: Rodrigo Amestica To: sam.robb@timesys.com Subject: Re: nfs problems Cc: cygwin@cygwin.com In-Reply-To: <3D848382FB72E249812901444C6BDB1D022F54B0@exchange.timesys.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline References: <3D848382FB72E249812901444C6BDB1D022F54B0@exchange.timesys.com> X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id jAIL3aNE006074 On 11/14/05, Robb, Sam wrote: > If you have any interest in working on > resolving it, I'd be happy to hear whatever else you can > discover about the problem. Hi Sam, what I found is the following: in a machine like mine, in which I have 2 physical disk drives, I get the following from the stat command: /exports/c Device: c98ce9bh/211340955d Inode: 1407374883553285 Links: 9 /exports/d Device: c847021ch/3360096796d Inode: 1407374883553285 Links: 6 As you can see the device id is not the same but the inode it is! Now, in libnfs/fhandle.c there is a function called pseudo_inode. For cygwin this function creates a pseudo node id that enterely drops any information about the device id. Therefore, what is happening is that for a remote client /exports/c and /exports/d are mounted on the same file system because fh_lookup has no means for resolving same inodes on diffrent drives. Inlined in the code of pseudo_inode there is a comment. The comment seems to be valid for one single drive, but as soon as you have more thatn 1 then the comment is, let's say, incorrect. Perhaps, the author of that comment was very aware of this situation and somewhere else annotated that this version of nfs-server is not good for more than one drive. Fixing the problem seems to be possible, but I just wonder about the comment in pseudo_inode. Perhaps, there is something else I'm overlooking. thanks, Rodrigo -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/