RFC: FUSE kernel module for the kernel...

[gnn at freebsd.org]

At Sun, 11 Mar 2012 11:43:06 +0100,
Gustau Pérez wrote:
> 
> On 08/03/2012 22:20, George Neville-Neil wrote:
> > Howdy,
> >
> > I've taken the GSoC work done with the FUSE kernel module, and created a patch against HEAD
> > which I have now subjected to testing using tools/regression/fsx.
> >
> > The patch is here: http://people.freebsd.org/~gnn/head-fuse-1.diff
> >
> > I would like to commit this patch in the next few days, so, please, if you care
> > about this take a look and get back to me.
> >
> > Thanks,
> > George
> 
>     Hi,
> 
>    I'm running HEAD r232383 (as of 2 March) + head-fuse-2.diff in AMD64.
> 
>    I've been able to use some fuse fs. I run fsx for a while without 
> problems with some of them (ext4fuse is readonly). Then ones working were:
> 
>          sshfs
>          ntfs-3g
>          ext4fuse
> 
>    others like:
> 
>          truecrypt
>          gvfs (gnome fuse daemon)
> 
>    do fail. I tried fsx with gvfs, that's what I got:
> 
>          [gus at portgus ~]$ /root/deviant2/tools/regression/fsx/fsx 
> .gvfs/multimedia\ a\ harkserver/prova
>          no extend on truncate! not posix!
> 
>    They (truecrypt and gvfs) fail when doing setattr/getattr syscalls. 
> truecrypt complains about not being able to find the recently created 
> encrypted volume (a simple one like $HOME/Desktop/prova).
> 
>     With gvfs, the nautilus (or the application trying to use the file) 
> tries to setattr the file causing gvfs to get an I/O. It happens with 
> nearly all kind of files opened with gvfs, although there are some that 
> are useable. With those files useable with gvfs, when the application 
> closes them causes gvfs to block somewhere, rendering gvfs unuseable.
> 
>    Those two filesystems can be very useful in the desktop, I guess 
> PCBSD could benefit from them.
> 
>    I would say there is something blocking in 
> fuse_vnop_setattr/fuse_vnop_getattr, but I'm not sure how to debug it.
> 
>    Thanks for your help.
> 

Thanks for the detailed report.  I'll look into this in a bit, I'm
traveling for two weeks.

Best,
George