def inject_data(image, key=None, net=None, metadata=None, admin_password=None,
files=None, partition=None, mandatory=()):
"""Inject the specified items into a disk image.
:param image: instance of nova.virt.image.model.Image
:param key: the SSH public key to inject
:param net: the network configuration to inject
:param metadata: the user metadata to inject
:param admin_password: the root password to set
:param files: the files to copy into the image
:param partition: the partition number to access
:param mandatory: the list of parameters which must not fail to inject
If an item name is not specified in the MANDATORY iterable, then a warning
is logged on failure to inject that item, rather than raising an exception.
it will mount the image as a fully partitioned disk and attempt to inject
into the specified partition number.
If PARTITION is not specified the image is mounted as a single partition.
Returns True if all requested operations completed without issue.
Raises an exception if a mandatory item can't be injected.
"""
items = {'image': image, 'key': key, 'net': net, 'metadata': metadata,
'files': files, 'partition': partition}
LOG.debug("Inject data image=%(image)s key=%(key)s net=%(net)s "
"metadata=%(metadata)s admin_password=<SANITIZED> "
"files=%(files)s partition=%(partition)s", items)
try:
fs = vfs.VFS.instance_for_image(image, partition)
fs.setup()
except Exception as e:
# If a mandatory item is passed to this function,
# then reraise the exception to indicate the error.
for inject in mandatory:
inject_val = items[inject]
if inject_val:
raise
LOG.warning('Ignoring error injecting data into image %(image)s '
'(%(e)s)', {'image': image, 'e': e})
return False
try:
return inject_data_into_fs(fs, key, net, metadata, admin_password,
files, mandatory)
finally:
fs.teardown()
def is_image_extendable(image):
"""Check whether we can extend the image."""
LOG.debug('Checking if we can extend filesystem inside %(image)s.',
{'image': image})
# For anything except a local raw file we must
# go via the VFS layer
if (not isinstance(image, imgmodel.LocalImage)
or image.format != imgmodel.FORMAT_RAW):
fs = None
try:
fs = vfs.VFS.instance_for_image(image, None)
fs.setup(mount=False)
if fs.get_image_fs() in SUPPORTED_FS_TO_EXTEND:
return True
except exception.NovaException as e:
# FIXME(sahid): At this step we probably want to break the
# process if something wrong happens however our CI
# provides a bad configuration for libguestfs reported in
# the bug lp#1413142. When resolved we should remove this
# except to let the error to be propagated.
LOG.warning(
'Unable to mount image %(image)s with '
'error %(error)s. Cannot resize.', {
'image': image,
'error': e
})
finally:
if fs is not None:
fs.teardown()
return False
else:
# For raw, we can directly inspect the file system
try:
utils.execute('e2label', image.path)
except processutils.ProcessExecutionError as e:
LOG.debug(
'Unable to determine label for image %(image)s with '
'error %(error)s. Cannot resize.', {
'image': image,
'error': e
})
return False
return True
def is_image_extendable(image):
"""Check whether we can extend the image."""
LOG.debug('Checking if we can extend filesystem inside %(image)s.',
{'image': image})
# For anything except a local raw file we must
# go via the VFS layer
if (not isinstance(image, imgmodel.LocalImage) or
image.format != imgmodel.FORMAT_RAW):
fs = None
try:
fs = vfs.VFS.instance_for_image(image, None)
fs.setup(mount=False)
if fs.get_image_fs() in SUPPORTED_FS_TO_EXTEND:
return True
except exception.NovaException as e:
# FIXME(sahid): At this step we probably want to break the
# process if something wrong happens however our CI
# provides a bad configuration for libguestfs reported in
# the bug lp#1413142. When resolved we should remove this
# except to let the error to be propagated.
LOG.warning('Unable to mount image %(image)s with '
'error %(error)s. Cannot resize.',
{'image': image, 'error': e})
finally:
if fs is not None:
fs.teardown()
return False
else:
# For raw, we can directly inspect the file system
try:
processutils.execute('e2label', image.path)
except processutils.ProcessExecutionError as e:
LOG.debug('Unable to determine label for image %(image)s with '
'error %(error)s. Cannot resize.',
{'image': image,
'error': e})
return False
return True
