On Tue, Nov 06, 2012 at 07:50:33PM +0800, Gao feng wrote: > 于 2012年11月06日 17:11, Richard W.M. Jones 写道: > > On Tue, Nov 06, 2012 at 04:54:59PM +0800, Gao feng wrote: > >> Because libvirt_lxc create a thread to mount fuse filesystem. > >> and then libvirt_lxc will try to access the fuse filesystem. > >> > >> Without waiting,libvirt_lxc may access fuse before it is mounted. > >> > >> And I can't find a better way to make accessing fuse after the fuse > >> being mounted,because fuse_main will return until fuse being unmounted,so > >> I don't know how to pass message to tell libvirt_lxc whether the fuse is > >> mounted success. > > > > Oh I see. This is solvable, but I believe that you cannot use > > fuse_main. You have to look at the fuse sources (quite complex!) and > > do the individual fuse operations. > > > > Have a look at how libguestfs does it ... > > > > https://github.com/libguestfs/libguestfs/blob/master/src/fuse.c#L911 > > http://libguestfs.org/guestfs.3.html#mount-local > > > > > Thanks for the information. > > Can fuse_mount & fuse_new & fuse_loop avoid the waiting? > > It seems has the same problem. It waits, but it doesn't busy wait in a loop. The first access to the filesystem hangs until the thread which is handling the filesystem is listening for requests. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones New in Fedora 11: Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 70 libraries supprt'd http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list