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# Example showing how to inspect a virtual machine disk.
import sys
import guestfs
assert (len (sys.argv) == 2)
disk = sys.argv[1]
g = guestfs.GuestFS ()
# Attach the disk image read-only to libguestfs.
g.add_drive_opts (disk, readonly=1)
# Run the libguestfs back-end.
g.launch ()
# Ask libguestfs to inspect for operating systems.
roots = g.inspect_os ()
if len (roots) == 0:
raise (Error ("inspect_vm: no operating systems found"))
for root in roots:
print "Root device: %s" % root
# Print basic information about the operating system.
print " Product name: %s" % (g.inspect_get_product_name (root))
print " Version: %d.%d" % \
(g.inspect_get_major_version (root),
g.inspect_get_minor_version (root))
print " Type: %s" % (g.inspect_get_type (root))
print " Distro: %s" % (g.inspect_get_distro (root))
# Mount up the disks, like guestfish -i.
#
# Sort keys by length, shortest first, so that we end up
# mounting the filesystems in the correct order.
mps = g.inspect_get_mountpoints (root)
def compare (a, b):
if len(a[0]) > len(b[0]):
return 1
elif len(a[0]) == len(b[0]):
return 0
else:
return -1
mps.sort (compare)
for mp_dev in mps:
try:
g.mount_ro (mp_dev[1], mp_dev[0])
except RuntimeError as msg:
print "%s (ignored)" % msg
# If /etc/issue.net file exists, print up to 3 lines.
filename = "/etc/issue.net"
if g.is_file (filename):
print "--- %s ---" % filename
lines = g.head_n (3, filename)
for line in lines: print line
# Unmount everything.
g.umount_all ()
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