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Re: [Libguestfs] running libguestfs as a service?



On Fri, May 06, 2011 at 06:10:24PM -0400, T Johnson wrote:
> On Thu, May 5, 2011 at 10:59 PM, Richard W.M. Jones <rjones redhat com> wrote:
> > The I/O errors above would be because the underlying disk is somehow
> > read-only to qemu.
> >
> 
> By this you mean the uid the process is running as and not the actual
> 'qemu' uid, right? Just making sure..

No, I mean that libguestfs is unable to open the disk in anything
other than read-only mode.  The 'qemu' user/uid has nothing to do with
this.

> > For NFS I guess this could be because of root_squash-ing.
> >
> 
> Hmm, ok. I will keep plugging away and update the thread if I discover
> something.
> 
> One thing that's curious is I've also played with just using
> command-line `virt-X` and `guestfish` to upload new files to the same
> images and haven't had the same write problems and/or process hangs.
> Secondly, the changes *do* get written to the images so it's certainly
> not a flat-out permission denied issue.

It's got something to do with what permissions or user your daemon /
remote process runs as, but from here it's hard to say exactly what.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org


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