> > On Wed, Jan 9, 2013 at 7:31 AM, 马磊 <
address@hidden <mailto:
address@hidden>> wrote:
> > >
> > >
> > >>> Hi,
> > >>> The final effect is as follows:
> > >>>
> > >>>
> > >>> address@hidden Fri Dec 28 ~/honeypot/xen/xen-4.1.2]$ qemu-img-xen cat
> > >>> -f /1/boot.ini ~/vm-check.img
> > >>> [boot loader]
> > >>> timeout=30
> > >>> default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
> > >>> [operating systems]
> > >>> multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP
> > >>> Professional" /noexecute=optin /fastdetect
> > >>>
> > >>> address@hidden Fri Dec 28 ~/honeypot/xen/xen-4.1.2]$ qemu-img-xen ls
> > >>> -l -d /1/ ~/vm-check.img
> > >>> 【name size(bytes) dir? date
> > >>> create-time】
> > >>> AUTOEXEC.BAT 0 file 2010-12-22 17:30:37
> > >>> boot.ini 211 file 2010-12-23 01:24:41
> > >>> bootfont.bin 322730 file 2004-11-23 20:00:00
> > >>>
> > >>>
> > >>>
> > >>> As you see above, the patch add two sub-commands for qemu-img-xen：cat and
> > >>> ls.
> > >>>
> > >>> For details in the patch, please check the attachment.
> > >>>
> > >>>
> > >
> > > Does anyone prefer this feature?!
> >
> > Nice feature, but this approach would just clutter QEMU and give only
> > readonly FAT or NTFS support. I think a more generally useful approach
> > would be to use NBD or iSCSI to export the block device data from the
> > image file (qemu-nbd already exists) and then make a tool that uses
> > some combination of NBD/iSCSI client, all GRUB file systems and FUSE
> > or other user space methods to access the contents of the filesystem.
> > Probably also UML with a simple guest agent could provide read/write
> > access to any file system that Linux supports.
>
> The latter is what libguestfs already provides. It boots a Linux kernel
> and mini initrd containing a guest agent, to provide APIs to do arbitrary
> manipulation of guest OS images.
>
> The reason libguestfs used a linux guest was precisely to avoid having
> to re-implement drivers for every filesystem in existance like this
> patch is trying todo.
>
> I don't think QEMU wants to be in the business of maintaining filesystem
> drivers, so I'd reject this proposed patch.
>
> Regards,
> Daniel
> --
> |:
http://berrange.com -o-
http://www.flickr.com/photos/dberrange/ :|
> |:
http://libvirt.org -o-
http://virt-manager.org :|
> |:
http://autobuild.org -o-
http://search.cpan.org/~danberr/ :|
> |:
http://entangle-photo.org -o-
http://live.gnome.org/gtk-vnc :|
>
>
>
> This feature could be configured to be optional in make file configuration according to individual preference.