From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Richard W.M. Jones" Subject: Re: [fuse-devel] fusermount reports "Device or resource busy" but unmounts it anyway Date: Wed, 13 May 2015 09:29:42 +0100 Message-ID: <20150513082942.GT29283@redhat.com> References: <20150512093413.GA19964@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: fuse-devel , "Eric W. Biederman" , Linux-Fsdevel To: Miklos Szeredi Return-path: Received: from mx1.redhat.com ([209.132.183.28]:45932 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932977AbbEMI3o (ORCPT ); Wed, 13 May 2015 04:29:44 -0400 Content-Disposition: inline In-Reply-To: Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Wed, May 13, 2015 at 10:27:09AM +0200, Miklos Szeredi wrote: > [CCs added] > > On Tue, May 12, 2015 at 11:34 AM, Richard W.M. Jones wrote: > > > > Has something changed in FUSE / the kernel in the past few months so > > that 'fusermount -u /mp' reports the error: > > > > fusermount: failed to unmount /mp: Device or resource busy > > > > That's from the umount2() syscall, and most likely not a fuse issue. > > > and returns a non-zero exit code, but the mountpoint is unmounted > > anyway? > > Is this in 4.1-rc? If so, then the recent fs/namespace.c patches from > Eric Biederman would be suspect. Yes, this is reproducible with: kernel-4.1.0-0.rc2.git3.1.fc23.x86_64 (from Fedora Rawide) fuse-2.9.3-4.fc22.x86_64 I will see if I can make a small reproducer and get back. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v