mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
917550a117
This is now set by default in all supported versions of libguestfs. It's just confusing if the examples refer to it.
55 lines
1.3 KiB
Python
55 lines
1.3 KiB
Python
# Example showing how to create a disk image.
|
|
|
|
import os
|
|
import guestfs
|
|
|
|
output = "disk.img"
|
|
|
|
g = guestfs.GuestFS ()
|
|
|
|
# Create a raw-format sparse disk image, 512 MB in size.
|
|
f = open (output, "w")
|
|
f.truncate (512 * 1024 * 1024)
|
|
f.close ()
|
|
|
|
# Set the trace flag so that we can see each libguestfs call.
|
|
g.set_trace (1)
|
|
|
|
# Attach the disk image to libguestfs.
|
|
g.add_drive_opts (output, format = "raw", readonly = 0)
|
|
|
|
# Run the libguestfs back-end.
|
|
g.launch ()
|
|
|
|
# Get the list of devices. Because we only added one drive
|
|
# above, we expect that this list should contain a single
|
|
# element.
|
|
devices = g.list_devices ()
|
|
assert (len (devices) == 1)
|
|
|
|
# Partition the disk as one single MBR partition.
|
|
g.part_disk (devices[0], "mbr")
|
|
|
|
# Get the list of partitions. We expect a single element, which
|
|
# is the partition we have just created.
|
|
partitions = g.list_partitions ()
|
|
assert (len (partitions) == 1)
|
|
|
|
# Create a filesystem on the partition.
|
|
g.mkfs ("ext4", partitions[0])
|
|
|
|
# Now mount the filesystem so that we can add files.
|
|
g.mount_options ("", partitions[0], "/")
|
|
|
|
# Create some files and directories.
|
|
g.touch ("/empty")
|
|
message = "Hello, world\n"
|
|
g.write ("/hello", message)
|
|
g.mkdir ("/foo")
|
|
|
|
# This one uploads the local file /etc/resolv.conf into
|
|
# the disk image.
|
|
g.upload ("/etc/resolv.conf", "/foo/resolv.conf")
|
|
|
|
g.close ()
|