On Mon, Oct 08, 2012 at 08:10:36PM +0200, Olaf Hering wrote:
  # virt-filesystems -v -d 6326ad4e-5805-2ab4-1338-d1dad8c76162 --all
 libguestfs: libvirt version = 10002
 libguestfs: [00000ms] connect to libvirt
 libguestfs: [00001ms] get libvirt capabilities
 libguestfs: [00234ms] build appliance
 libguestfs: [00234ms] create libvirt XML
 libguestfs: error: error constructing libvirt XML at "xmlTextWriterWriteAttribute
(xo, BAD_CAST "file", BAD_CAST appliance)": No such file or directory
 libguestfs: closing guestfs handle 0x656270 (state 0)
 
  # ls -lh /usr/lib64/guestfs/*
 -rw-r--r-- 1 root root  13M Oct  8 16:15 /usr/lib64/guestfs/initramfs.x86_64.img
 -rw-r--r-- 1 root root 3.7M Oct  6 09:25 /usr/lib64/guestfs/vmlinuz.x86_64
 
 Signed-off-by: Olaf Hering <olaf(a)aepfle.de>
 ---
 
 perhaps the if (!appliance) check should be somewhere else?
 
  src/launch-libvirt.c | 4 ++++
  1 file changed, 4 insertions(+)
 
 diff --git a/src/launch-libvirt.c b/src/launch-libvirt.c
 index d678266..5914642 100644
 --- a/src/launch-libvirt.c
 +++ b/src/launch-libvirt.c
 @@ -936,6 +936,10 @@ construct_libvirt_xml_appliance (guestfs_h *g, xmlTextWriterPtr xo,
    char drive_name[64] = "sd";
    char scsi_target[64];
  
 +  /* appliance is optional */
 +  if (appliance == NULL)
 +     return 0;
 +
    guestfs___drive_name (drv_index, &drive_name[2]);
    snprintf (scsi_target, sizeof scsi_target, "%zu", drv_index);
  
 -- 
 1.7.12.1 
I'd forgotten that anyone was using the old-style appliance.
The patch is fine and I'll apply it, possibly modified.
But out of interest, how are you creating this appliance?  I thought
we'd ripped out support for old-style appliances from the rest of the
toolchain ...
Rich.
-- 
Richard Jones, Virtualization Group, Red Hat 
http://people.redhat.com/~rjones
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http://et.redhat.com/~rjones/virt-df/