From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dean S. Messing" Subject: Re: Help: nfs not able to mount large (loopback) directory Date: Sat, 4 Jun 2005 23:00:00 -0700 (PDT) Message-ID: <20050605060000.61C2C112D0@pons> References: <20050604031908.D58E8198C8@medulla.enet.sharplabs.com> <1117859180.11099.12.camel@lade.trondhjem.org> Cc: nfs@lists.sourceforge.net Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list2.sourceforge.net with esmtp (Exim 4.30) id 1DeoBU-0004Gx-8Y for nfs@lists.sourceforge.net; Sat, 04 Jun 2005 23:00:32 -0700 Received: from keymaster.sharplabs.com ([216.65.151.107] helo=sharplabs.com) by sc8-sf-mx2.sourceforge.net with esmtp (Exim 4.41) id 1DeoBS-0005wE-GE for nfs@lists.sourceforge.net; Sat, 04 Jun 2005 23:00:32 -0700 To: trond.myklebust@fys.uio.no In-reply-to: <1117859180.11099.12.camel@lade.trondhjem.org> (message from Trond Myklebust on Sat, 04 Jun 2005 00:26:20 -0400) Sender: nfs-admin@lists.sourceforge.net Errors-To: nfs-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Post: List-Help: List-Subscribe: , List-Archive: Trond Myklebust wrote: : fr den 03.06.2005 Klokka 20:19 (-0700) skreiv Dean S. Messing: : > : > I have a large .iso image (4GB) on machine B which I have loopback : > mounted to directory /mnt/disk. : > : > When I try to nfs mount B:/mnt/disk to machine A I get a "permission : > denied" error. : > : > If I replace the 4GB image on machine B with, say, a 700MB .iso image, I have : > no problem with the NFS mount on machine A. : > : > I'm running the latest version of MandrivaLinux (2005LE == Mandrake 10.2) : > on machine B and MandrakeLinux 10.0 on machine A so the nfs utilites : > on machine B (the server) should be nearly current. : > In fact: : > : > [root@neuron ~]# rpcinfo -p : > program vers proto port : > 100000 2 tcp 111 portmapper : > 100000 2 udp 111 portmapper : > 100003 2 udp 2049 nfs : > 100003 3 udp 2049 nfs : > 100003 4 udp 2049 nfs : > 100003 2 tcp 2049 nfs : > 100003 3 tcp 2049 nfs : > 100003 4 tcp 2049 nfs : > 100021 1 udp 34593 nlockmgr : > 100021 3 udp 34593 nlockmgr : > 100021 4 udp 34593 nlockmgr : > 100021 1 tcp 33635 nlockmgr : > 100021 3 tcp 33635 nlockmgr : > 100021 4 tcp 33635 nlockmgr : > 100005 1 udp 846 mountd : > 100005 1 tcp 849 mountd : > 100005 2 udp 846 mountd : > 100005 2 tcp 849 mountd : > 100005 3 udp 846 mountd : > 100005 3 tcp 849 mountd : > 100024 1 udp 888 status : > 100024 1 tcp 891 status : > : > : > Is it the case that nfs (mountd?) can't handle "large" files? : : It is true that NFS version 2 cannot handle files > 2GB, but as far as I : gathered you are not exporting the ISO as a single file. Besides, NFSv3 : and NFSv4 should be quite capable of dealing with a 4GB file. : : This therefore sounds more like it might be some strange interaction : between the loopback driver and nfsd or mountd. >>From my reading your remarks sound correct. I wonder how I can fix this problem. Loopback mounting a DVD .iso image and making it available via NFS has got to be something that is fairly commonly done. Dean ------------------------------------------------------- This SF.Net email is sponsored by: NEC IT Guy Games. How far can you shotput a projector? How fast can you ride your desk chair down the office luge track? If you want to score the big prize, get to know the little guy. Play to win an NEC 61" plasma display: http://www.necitguy.com/?r=20 _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs