Re: losetup and fuse

> > > As I read in an earlier Discussion and
somewhere else it is considered
> > > as a Problem to losetup a File from a
Fuse-Filesystem into a virtual
> > > Block-Device.
> > 
> > There are certain deadlock scenarios that might
happen with loop over
> > fuse.  Recent kernels have gotten better in this
respect, doing this
> > on 2.6.24 should be relatively safe.
> 
> Do you have pointers about such deadlocks ?

Unfortunately not.  I've got these reports through Szaka,
the author
of NTFS-3G.

Why are you interested?  As I say most of these deadlocks
should be
gone in the latest linux kernels.  There's still some
theoretical
possibility that I know, but I'm not sure it can be
triggered in
practice.

Miklos

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On Fri, Mar 07, 2008 at 11:57:15PM +0100, Miklos Szeredi
wrote:
> > > > As I read in an earlier Discussion and
somewhere else it is considered
> > > > as a Problem to losetup a File from a
Fuse-Filesystem into a virtual
> > > > Block-Device.
> > > 
> > > There are certain deadlock scenarios that
might happen with loop over
> > > fuse.  Recent kernels have gotten better in
this respect, doing this
> > > on 2.6.24 should be relatively safe.
> > 
> > Do you have pointers about such deadlocks ?
> 
> Unfortunately not.  I've got these reports through
Szaka, the author
> of NTFS-3G.
> 
> Why are you interested?  As I say most of these
deadlocks should be
> gone in the latest linux kernels.  There's still some
theoretical
> possibility that I know, but I'm not sure it can be
triggered in
> practice.

I'm interested because I do use loopback devices on top of
fuse with a
2.4.something kernel, and I can't change to a latest kernel.
Are fuse
over fuse a problem, too ?

Mike

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