mirror of
https://github.com/rocky-linux/createhdds.git
synced 2024-11-18 03:01:25 +00:00
a67ee015ea
from 5 mins to 10 mins...we seem to hit it far too often, I guess initial relabel takes more than 5 mins.
698 lines
30 KiB
Python
Executable File
698 lines
30 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (C) 2015 Red Hat
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#
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# createhdds is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Author: Adam Williamson <awilliam@redhat.com>
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"""Tool for creating hard disk images for Fedora openQA."""
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import argparse
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import logging
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import json
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import os
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try:
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import subprocess32 as subprocess
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except ImportError:
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import subprocess
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import sys
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import time
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import tempfile
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import fedfind.helpers
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import guestfs
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import pexpect
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from six.moves.urllib.request import urlopen
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# this is a bit icky, but it means you can run the script from
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# anywhere - we use this to locate hdds.json and the virtbuilder
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# image command files, so they must always be in the same place
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# as the script itself. images are checked/created in the working
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# directory.
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SCRIPTDIR = os.path.abspath(os.path.dirname(sys.argv[0]))
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logger = logging.getLogger('createhdds')
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def handle_size(size):
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"""Simple function to handle sizes like '10G' or '100MB', returns
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the size in bytes as an int. Used by both image classes.
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"""
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size = str(size)
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if size.endswith('G') or size.endswith('GB') or size.endswith('GiB'):
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return int(size.split('G')[0]) * 1024 * 1024 * 1024
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elif size.endswith('M') or size.endswith('MB') or size.endswith('MiB'):
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return int(size.split('M')[0]) * 1024 * 1024
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else:
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return int(size)
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class GuestfsImage(object):
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"""Class representing an image created by guestfs. 'size' is the
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desired image size, valid formats are a digit string (size in
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bytes, digit string plus 'M', 'MB' or 'MiB' (size in power of two
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megabytes), or digit string plus 'G', 'GB' or 'GiB' (size in power
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of two gigabytes). 'imgver' is the image 'version' - in practice
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it's simply a string that gets included in the image file name
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if specified. 'filesystem' is the default filesystem for the image
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- it will be used for parts that don't explicitly specify a
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filesystem. 'label' is the disk label format to be used. parts,
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writes, and uploads are lists of dicts that specify the partitions
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that should be created and files that should be written or copied
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('uploaded') to them. These are read in from hdds.json by
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get_guestfs_images and passed here. 'name_extras' is an iterable
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of strings which should be appended to the image file name, with _
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separators (this provides a mechanism for get_guestfs_images to
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include the label and/or filesystem in the image name when
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creating images from a group with variants).
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"""
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def __init__(self, name, size, imgver='', filesystem='ext4', label='mbr', parts=None,
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writes=None, uploads=None, name_extras=None):
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self.name = name
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self.size = handle_size(size)
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# guestfs images are never outdated
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self.outdated = False
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self.filesystem = filesystem
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self.label = label
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self.parts = []
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self.writes = []
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self.uploads = []
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if parts:
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self.parts = parts
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if writes:
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self.writes = writes
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if uploads:
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self.uploads = uploads
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self.filename = "disk_{0}".format(name)
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if imgver:
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self.filename = "{0}_{1}".format(self.filename, imgver)
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if name_extras:
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for item in name_extras:
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self.filename = "{0}_{1}".format(self.filename, item)
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self.filename = "{0}.img".format(self.filename)
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def create(self):
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"""Create the image."""
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gfs = guestfs.GuestFS(python_return_dict=True)
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try:
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# Create the disk image with a temporary name
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tmpfile = "{0}.tmp".format(self.filename)
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gfs.disk_create(tmpfile, "raw", int(self.size))
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# 'launch' guestfs with the disk attached
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gfs.add_drive_opts(tmpfile, format="raw", readonly=0)
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gfs.launch()
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# identify the disk and create a disk label
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disk = gfs.list_devices()[0]
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gfs.part_init(disk, self.label)
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# create and format the partitions
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for part in self.parts:
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# each partition can specify a filesystem, if it doesn't,
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# we use the image default
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if 'filesystem' not in part:
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part['filesystem'] = self.filesystem
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# create the partition: the dict must specify type ('p'
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# for primary, 'l' for logical, 'e' for extended), and
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# start and end sector numbers - more details in
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# guestfs docs
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gfs.part_add(disk, part['type'], int(part['start']), int(part['end']))
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# identify the partition and format it
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partn = gfs.list_partitions()[-1]
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gfs.mkfs(part['filesystem'], partn, label=part.get('label'))
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# do file 'writes' (create a file with a given string as
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# its content)
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for write in self.writes:
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# the write dict must specify the partition to be
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# written to, numbered from 1 as humans usually do;
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# find that part and mount it
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partn = gfs.list_partitions()[int(write['part'])-1]
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gfs.mount(partn, "/")
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# do the write: the dict must specify the target path
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# and the string to be written ('content')
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gfs.write(write['path'], write['content'])
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gfs.sync()
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gfs.umount_opts("/")
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# do file 'uploads'. in guestfs-speak that means transfer
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# a file from the host to the image, we use it to mean
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# download a file from an http server and transfer that
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# to the image
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for upload in self.uploads:
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# download the file to a temp file - borrowed from
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# fedora_openqa_schedule (which stole it from SO)
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(_, tmpfname) = tempfile.mkstemp(prefix="createhdds")
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with open(tmpfname, 'wb') as tmpfh:
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resp = urlopen(upload['source'])
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while True:
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# This is the number of bytes to read between buffer
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# flushes. Value taken from the SO example.
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buff = resp.read(8192)
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if not buff:
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break
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tmpfh.write(buff)
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# as with write, the dict must specify a target
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# partition and location ('target')
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partn = gfs.list_partitions()[int(upload['part'])-1]
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gfs.mount(partn, "/")
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gfs.upload(tmpfname, upload['target'])
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os.remove(tmpfname)
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gfs.sync()
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gfs.umount_opts("/")
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# we're all done! rename to the correct name
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os.rename(tmpfile, self.filename)
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except:
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# if anything went wrong, we want to wipe the temp file
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# then raise
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os.remove(tmpfile)
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raise
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finally:
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# whether things go right or wrong, we want to close the
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# gfs instance, and rwmj recommends 'shutdown()' too
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gfs.shutdown()
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gfs.close()
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class VirtBuilderImage(object):
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"""Class representing an image created by virt-builder. 'release'
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is the release the image will be built for. 'arch' is the arch.
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'size' is the desired image size, valid formats are a digit string
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(size in bytes, digit string plus 'M', 'MB' or 'MiB' (size in
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power of two megabytes), or digit string plus 'G', 'GB' or 'GiB'
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(size in power of two gigabytes). 0 (or any false-y value) means
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the image will be the size of the upstream base image. 'imgver' is
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the image 'version' - in practice it's simply a string that gets
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included in the image file name if specified. 'maxage' is the
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maximum age of the image file (in days) - if the image is older
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than this, 'check' will report it as 'outdated' and 'all' will
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rebuild it.
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"""
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def __init__(self, name, release, arch, size=0, imgver='', maxage=14):
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self.name = name
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self.size = handle_size(size)
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self.filename = "disk_f{0}_{1}".format(str(release), name)
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if imgver:
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self.filename = "{0}_{1}".format(self.filename, imgver)
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self.filename = "{0}_{1}.img".format(self.filename, arch)
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self.release = release
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self.arch = arch
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self.maxage = maxage
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def create(self, retries=3):
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"""Create the image."""
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tmpfile = "{0}.tmp".format(self.filename)
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try:
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# Basic creation command with standard params
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args = ["virt-builder", "fedora-{0}".format(str(self.release)), "-o", tmpfile,
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"--arch", self.arch]
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if self.size:
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args.extend(["--size", "{0}b".format(str(int(self.size)))])
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# We use guestfs's ability to read customization commands from
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# a file. The convention is to have a file 'name.commands' in
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# SCRIPTDIR; if this file exists, we pass it to virt-builder.
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if os.path.isfile("{0}/{1}.commands".format(SCRIPTDIR, self.name)):
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args.extend(["--commands-from-file", "{0}/{1}.commands".format(SCRIPTDIR, self.name)])
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# run the command, timing out after 1 hour; sometimes creation
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# seems to just get mysteriously stuck, we need to bail and
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# retry in this case
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try:
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ret = subprocess.call(args, timeout=3600)
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except subprocess.TimeoutExpired:
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logger.warning("Image creation timed out!")
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if os.path.isfile(tmpfile):
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os.remove(tmpfile)
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if retries:
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logger.info("Retrying: %s retries remain after this", str(retries))
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return self.create(retries=retries-1)
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else:
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sys.exit("Image creation timed out too many times!")
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if ret > 0:
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# wipe the temp file
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if os.path.isfile(tmpfile):
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os.remove(tmpfile)
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sys.exit("virt-builder command {0} failed!".format(' '.join(args)))
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# We have to boot the disk to make SELinux relabelling happen;
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# virt-builder can't do it unless the policy version on the host
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# is the same as the guest(?) There are lots of bad ways to do
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# this, expect is the one we're using. This can also get stuck
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# apparently, so let's set a 300 sec timeout for each expect
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# and bail if it's hit.
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try:
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logger.info("Booting image to trigger SELinux relabel...")
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child = pexpect.spawnu("qemu-kvm -m 2G -nographic {0}".format(tmpfile), timeout=600)
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child.expect(u"localhost login:")
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child.sendline(u"root")
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child.expect(u"Password:")
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child.sendline(u"weakpassword")
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child.expect(u"~]#")
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child.sendline(u"poweroff")
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child.expect(u"reboot: Power down")
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child.close()
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except pexpect.TIMEOUT:
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if os.path.isfile(tmpfile):
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os.remove(tmpfile)
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sys.exit("Timed out booting image!")
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# we're all done! rename to the correct name
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os.rename(tmpfile, self.filename)
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except:
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# if anything went wrong, we want to wipe the temp file
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# then raise
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if os.path.isfile(tmpfile):
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os.remove(tmpfile)
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raise
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@property
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def outdated(self):
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"""Whether the image is outdated - if self.maxage is set and
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it's older than that.
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"""
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if not os.path.isfile(self.filename):
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return False
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if self.maxage:
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age = int(time.time()) - int(os.path.getmtime(self.filename))
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# maxage is in days
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if age > int(self.maxage) * 24 * 60 * 60:
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return True
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return False
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def get_guestfs_images(imggrp, labels=None, filesystems=None):
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"""Passed a single 'image group' dict (usually read out of hdds.
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json), returns a list of GuestfsImage instances. labels and
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filesystems act as overrides to the values specified in hdds.json
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and the defaults in this function; multiple images will be created
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for whatever combinations of labels and filesystems are specified.
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If they're not passed, then we use the values from the dict; if
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the dict doesn't specify, we just create a single image with the
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label set to 'mbr' and the filesystem to 'ext4'. The filesystem
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setting is itself a default - it's only used for 'part' entries
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which don't specify a filesystem (see the GuestfsImage docs).
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"""
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imgs = []
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# Read in the various dict values
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name = imggrp['name']
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size = imggrp['size']
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parts = imggrp['parts']
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# These are optional
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writes = imggrp.get('writes')
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uploads = imggrp.get('uploads')
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imgver = imggrp.get('imgver')
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# Here we implement the 'labels / filesystems' behaviour explained
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# in the docstring
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if not labels:
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labels = imggrp.get('labels', ['mbr'])
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if not filesystems:
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filesystems = imggrp.get('filesystems', ['ext4'])
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# Now we've sorted out all our settings, instantiate the images
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for label in labels:
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for filesystem in filesystems:
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# We want to indicate filesystem/label in the filename
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# when we're creating images with more than one. We check
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# both the passed 'filesystems' value and the imggrp
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# value, so if the caller overrode the imggrp value we
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# still get the the long name (happens when using the
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# single-image CLI subcommand and restricting the label/
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# filesystem)
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name_extras = []
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if len(imggrp.get('filesystems', [])) > 1 or len(filesystems) > 1:
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name_extras.append(filesystem)
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if len(imggrp.get('labels', [])) > 1 or len(labels) > 1:
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name_extras.append(label)
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img = GuestfsImage(
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name, size, imgver, filesystem, label, parts, writes, uploads, name_extras)
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imgs.append(img)
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return imgs
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def get_virtbuilder_images(imggrp, nextrel=None, releases=None):
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"""Passed a single 'image group' dict (usually read out of hdds.
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json), returns a list of VirtBuilderImage instances. 'nextrel'
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indicates the 'next' release of Fedora: sometimes we determine the
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release to build image(s) for in relation to this, so we need to
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know it. If it's not specified, we ask fedfind to figure it out
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for us (this is the usual case, we just allow specifying it
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in case there's an issue with fedfind or you want to test image
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creation for the next-next release ahead of time or something).
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The image group dict must include a dict named 'releases' which
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indicates what releases to build images for and what arches to
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build for each release; 'releases' can be used to override that. If
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set, the image group 'releases' dict is ignored, and this dict is
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used instead. The dict's keys must be release numbers or negative
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integers: -1 means 'one release lower than the "next" release',
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-2 means 'two releases lower than the "next" release', and so on.
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The values are the arches to build for that release.
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"""
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imgs = []
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# Set this here so if we need to calculate it, we only do it once
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if not nextrel:
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nextrel = 0
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name = imggrp['name']
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# this is the second place we set a default for maxage - bit ugly
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maxage = int(imggrp.get('maxage', 14))
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if not releases:
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releases = imggrp['releases']
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size = imggrp.get('size', 0)
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imgver = imggrp.get('imgver')
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# add an image for each release/arch combination
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for (relnum, arches) in releases.items():
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if int(relnum) < 0:
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# negative relnum indicates 'relative to next release'
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if not nextrel:
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nextrel = fedfind.helpers.get_current_release() + 1
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relnum = int(nextrel) + int(relnum)
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for arch in arches:
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imgs.append(
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VirtBuilderImage(name, relnum, arch, size=size, imgver=imgver, maxage=maxage))
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return imgs
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def get_all_images(hdds, nextrel=None):
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"""Simply iterates over the 'image group' dicts in hdds.json and
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calls the appropriate get_foo_images() function for each, then
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returns the list of all images. No overrides for labels,
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filesystems, releases or arches are provided here, this function
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is just for painting inside the lines - it's used to determine
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what images are 'expected' to exist according to hdds.json. We
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do allow passing of 'nextrel' just in case there's some issue
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with the auto-discovery.
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"""
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imgs = []
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for imggrp in hdds['guestfs']:
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imgs.extend(get_guestfs_images(imggrp))
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for imggrp in hdds['virtbuilder']:
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imgs.extend(get_virtbuilder_images(imggrp, nextrel=nextrel))
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return imgs
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def do_renames(hdds):
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"""Rename files according to the 'renames' list in hdds.json,
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which is just a list of 'old name, new name' pairs. Say there's
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an image we used to only create an mbr version of, but now we add
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a gpt version; that means the expected name of the mbr version
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changes. This function allows us to specify in hdds.json that the
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mbr image should be renamed, which saves having to rebuild it.
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'all' always does renames, 'check' can be told to do renames.
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"""
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for (orig, new) in hdds['renames']:
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if os.path.isfile(orig) and not os.path.exists(new):
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logger.info("Renaming %s to %s...", orig, new)
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os.rename(orig, new)
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def delete_all():
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"""Remove absolutely all createhdds-controlled files; we assume
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anything in the working directory starting with 'disk' and ending
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with 'img' is one of our files.
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"""
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files = [fl for fl in os.listdir('.') if fl.startswith('disk') and fl.endswith('img')]
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for _file in files:
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os.remove(_file)
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def clean(unknown):
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"""This simply removes all the files in the list. The list is
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expected to be the list of 'unknown' files returned by check();
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both 'all' and 'clean' can delete 'unknown' files if requested.
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'unknown' files are usually images for old releases we're no
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longer testing, images we've simply stopped using, or old image
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files when the image group name has been changed to indicate an
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incompatible change to the image(s).
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"""
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for filename in unknown:
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try:
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logger.info("Removing unknown image %s", filename)
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os.remove(filename)
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except OSError:
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# We don't really care if the file didn't exist for some
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# reason, so just pass.
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pass
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def check(hdds, nextrel=None):
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"""This calls get_all_images() to find out what images are expected
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to exist, then compares that to the images that are actually
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present and returns three lists. The first two are lists of Image
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subclass instances, the last is a list of filenames. The first is a
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list of the images that just aren't there at all. The second is a
|
|
list of images that are present but 'outdated', because they've
|
|
exceeded their maxage. The last is a list of image files that are
|
|
present but don't match any of the expected images - 'unknown'
|
|
images. The 'clean()' function can be used to remove these.
|
|
'nextrel' is passed through to get_all_images(), and is available
|
|
in case auto-detection via fedfind fails.
|
|
"""
|
|
current = []
|
|
missing = []
|
|
outdated = []
|
|
unknown = []
|
|
# Get the list of all 'expected' images
|
|
expected = get_all_images(hdds, nextrel=nextrel)
|
|
# Get the list of all present image files
|
|
files = set(fl for fl in os.listdir('.') if fl.startswith('disk') and fl.endswith('img'))
|
|
# Compare present images vs. expected images to produce 'unknown'
|
|
expnames = set(img.filename for img in expected)
|
|
unknown = list(files.difference(expnames))
|
|
|
|
# Now determine if images are absent or outdated
|
|
for img in expected:
|
|
if not os.path.isfile(img.filename):
|
|
missing.append(img)
|
|
continue
|
|
if img.outdated:
|
|
outdated.append(img)
|
|
continue
|
|
current.append(img)
|
|
|
|
logger.debug("Current images: %s", ', '.join([img.filename for img in current]))
|
|
logger.debug("Missing images: %s", ', '.join([img.filename for img in missing]))
|
|
logger.debug("Outdated images: %s", ', '.join([img.filename for img in outdated]))
|
|
logger.debug("Unknown images: %s", ', '.join(unknown))
|
|
return (missing, outdated, unknown)
|
|
|
|
def cli_all(args, hdds):
|
|
"""Function for the CLI 'all' subcommand. Creates all images. If
|
|
args.delete is set, blows all existing images away and recreates
|
|
them; otherwise it will just fill in missing or outdated images.
|
|
If args.clean is set, also wipes 'unknown' images.
|
|
"""
|
|
if args.delete:
|
|
logger.info("Removing all images...")
|
|
delete_all()
|
|
|
|
# handle renamed images (see do_renames docstring)
|
|
do_renames(hdds)
|
|
|
|
# call check() to find out what we need to do
|
|
(missing, outdated, unknown) = check(hdds, nextrel=args.nextrel)
|
|
|
|
# wipe 'unknown' images if requested
|
|
if args.clean:
|
|
clean(unknown)
|
|
|
|
# 'missing' plus 'outdated' is all the images we need to build; if
|
|
# args.delete was set, all images will be in this list
|
|
missing.extend(outdated)
|
|
for (num, img) in enumerate(missing, 1):
|
|
logger.info("Creating image %s...[%s/%s]", img.filename, str(num), str(len(missing)))
|
|
img.create()
|
|
|
|
def cli_check(args, hdds):
|
|
"""Function for the CLI 'check' subcommand. Basically just calls
|
|
check() and prints the results. Does renames before checking if
|
|
args.rename was set, and wipes 'unknown' images after checking if
|
|
args.clean was set. Exits with status 1 if any missing and/or
|
|
outdated files are found (handy for scripting/automation).
|
|
"""
|
|
if args.rename:
|
|
do_renames(hdds)
|
|
|
|
(missing, outdated, unknown) = check(hdds, nextrel=args.nextrel)
|
|
if missing:
|
|
print("Missing images: {0}".format(', '.join([img.filename for img in missing])))
|
|
if outdated:
|
|
print("Outdated images: {0}".format(', '.join([img.filename for img in outdated])))
|
|
if unknown:
|
|
print("Unknown images: {0}".format(', '.join(unknown)))
|
|
if args.clean:
|
|
clean(unknown)
|
|
|
|
if missing or outdated:
|
|
sys.exit("Missing and/or outdated images found!")
|
|
else:
|
|
sys.exit()
|
|
|
|
def cli_image(args, *_):
|
|
"""Function for CLI image group subcommands (a subcommand is added
|
|
for each image group in hdds.json). Will create the image(s) from
|
|
the specified group. For guestfs image groups with multiple labels
|
|
and/or filesystems, the user can pass args.label and/or args.
|
|
filesystem to limit creation to a single label and/or filesystem.
|
|
Note this function does no checking; the image will always be
|
|
recreated, even if it already exists and is current.
|
|
"""
|
|
# Note that on this path, the parsing of hdds is done by
|
|
# parse_args(). It passes us the image type and the image group
|
|
# dict from hdds as a tuple; we need to know the type so we know
|
|
# what fiddling to do with the args and what function to call
|
|
imggrp = args.imggrp[1]
|
|
imgtype = args.imggrp[0]
|
|
|
|
if imgtype == 'guestfs':
|
|
# If the user passed in label or filesystem, we pass them on
|
|
# to get_guestfs_images as single-item lists, otherwise we
|
|
# just pass 'None', causing it to use the values from imggrp
|
|
# (which come from hdds.json)
|
|
labels = None
|
|
filesystems = None
|
|
if args.label:
|
|
labels = [args.label]
|
|
if args.filesystem:
|
|
filesystems = [args.filesystem]
|
|
imgs = get_guestfs_images(imggrp, labels=labels, filesystems=filesystems)
|
|
|
|
elif imgtype == 'virtbuilder':
|
|
# If the user passed args.release, we construct a releases
|
|
# dict to pass to get_virtbuilder_images to override the dict
|
|
# from imggrp. If they passed args.arch, we use that arch,
|
|
# otherwise we default to x86_64. If args.release isn't set,
|
|
# we just pass None as release, and the releases dict from
|
|
# imggrp will be used, and images created for all release/
|
|
# arch combinations listed there. FIXME: if the user passes
|
|
# args.arch but not args.release, we just ignore it...
|
|
releases = None
|
|
if args.release:
|
|
if args.arch:
|
|
arches = [args.arch]
|
|
else:
|
|
arches = ['x86_64']
|
|
releases = {args.release: arches}
|
|
imgs = get_virtbuilder_images(imggrp, releases=releases)
|
|
|
|
for (num, img) in enumerate(imgs, 1):
|
|
logger.info("Creating image %s...[%s/%s]", img.filename, str(num), str(len(imgs)))
|
|
img.create()
|
|
|
|
def parse_args(hdds):
|
|
"""Parse arguments with argparse."""
|
|
parser = argparse.ArgumentParser(description=(
|
|
"Tool for creating hard disk images for Fedora openQA."))
|
|
parser.add_argument(
|
|
'-l', '--loglevel', help="The level of log messages to show",
|
|
choices=('debug', 'info', 'warning', 'error', 'critical'),
|
|
default='info')
|
|
|
|
# This is a workaround for a somewhat infamous argparse bug
|
|
# in Python 3. See:
|
|
# https://stackoverflow.com/questions/23349349/argparse-with-required-subparser
|
|
# http://bugs.python.org/issue16308
|
|
subparsers = parser.add_subparsers(dest='subcommand')
|
|
subparsers.required = True
|
|
|
|
parser_all = subparsers.add_parser(
|
|
'all', description="Ensure all images are present and up-to-date.")
|
|
parser_all.add_argument(
|
|
'-d', '--delete', help="Delete and re-build all images",
|
|
action='store_true')
|
|
parser_all.add_argument(
|
|
'-c', '--clean', help="Remove unknown (usually old) images",
|
|
action='store_true')
|
|
parser_all.add_argument(
|
|
'-n', '--nextrel', help="The release to treat as the 'next' release "
|
|
"- this determines what releases some images will be built for. If "
|
|
"not set or set to 0, createhdds will try to discover it when needed",
|
|
type=int, default=0)
|
|
parser_all.set_defaults(func=cli_all)
|
|
|
|
parser_check = subparsers.add_parser(
|
|
'check', description="Check status of existing image files.")
|
|
parser_check.add_argument(
|
|
'-n', '--nextrel', help="The release to treat as the 'next' release "
|
|
"- this determines what releases some images are expected to exist for. If "
|
|
"not set or set to 0, createhdds will try to discover it when needed",
|
|
type=int, default=0)
|
|
parser_check.add_argument(
|
|
'-r', '--rename', help="Whether to rename images when the expected name "
|
|
"has changed or not", action="store_true")
|
|
parser_check.add_argument(
|
|
'-c', '--clean', help="Remove unknown (usually old) images",
|
|
action='store_true')
|
|
parser_check.set_defaults(func=cli_check)
|
|
|
|
# This here is somewhat clever-clever: we generate a subcommand for
|
|
# each image group listed in hdds.json, which can be used to build
|
|
# image(s) from that group. For guestfs image groups, we also check
|
|
# if the group has multiple labels and/or filesystems by default,
|
|
# and add arguments to limit image creation to just a single label
|
|
# and/or filesystem.
|
|
for imggrp in hdds['guestfs']:
|
|
imgparser = subparsers.add_parser(
|
|
imggrp['name'], description="Create {0} image(s)".format(imggrp['name']))
|
|
labels = imggrp.get('labels', [])
|
|
if len(labels) > 1:
|
|
imgparser.add_argument(
|
|
'-l', '--label', help="Create only images with this disk label",
|
|
choices=labels)
|
|
filesystems = imggrp.get('filesystems', [])
|
|
if len(filesystems) > 1:
|
|
imgparser.add_argument(
|
|
'-f', '--filesystem', help="Create only images with this filesystem",
|
|
choices=filesystems)
|
|
imgparser.set_defaults(func=cli_image, label=None, filesystem=None)
|
|
# Here we're stuffing the type of the image and the dict from
|
|
# hdds into args for cli_image() to use.
|
|
imgparser.set_defaults(imggrp=('guestfs', imggrp))
|
|
|
|
# For libvirt images, we provide args to override the release/arch
|
|
# combination; using args.release will always result in just a
|
|
# single image being built, for x86_64 unless args.arch is set to
|
|
# i686.
|
|
for imggrp in hdds['virtbuilder']:
|
|
imgparser = subparsers.add_parser(
|
|
imggrp['name'], description="Create {0} image(s)".format(imggrp['name']))
|
|
imgparser.add_argument(
|
|
'-r', '--release', help="The release to build the image(s) for. If not "
|
|
"set or set to 0, createhdds will attempt to determine the current "
|
|
"release and build for appropriate releases relative to that",
|
|
type=int, default=0)
|
|
imgparser.add_argument(
|
|
'-a', '--arch', help="The arch to build the image(s) for. If neither "
|
|
"this nor --release is set, createhdds will decide the appropriate "
|
|
"arch(es) to build for each release. If this is not set but --release "
|
|
"is set, only x86_64 image(s) will be built.",
|
|
choices=('x86_64', 'i686'))
|
|
imgparser.set_defaults(func=cli_image)
|
|
# Here we're stuffing the type of the image and the dict from
|
|
# hdds into args for cli_image() to use.
|
|
imgparser.set_defaults(imggrp=('virtbuilder', imggrp))
|
|
return parser.parse_args()
|
|
|
|
def main():
|
|
"""Main loop - set up logging, parse args, run subcommand
|
|
function.
|
|
"""
|
|
try:
|
|
with open('{0}/hdds.json'.format(SCRIPTDIR), 'r') as fout:
|
|
hdds = json.load(fout)
|
|
args = parse_args(hdds)
|
|
loglevel = getattr(
|
|
logging, args.loglevel.upper(), logging.INFO)
|
|
logging.basicConfig(level=loglevel)
|
|
args.func(args, hdds)
|
|
except KeyboardInterrupt:
|
|
sys.stderr.write("Interrupted, exiting...\n")
|
|
# there may be temp image files lying around...
|
|
tmps = [fl for fl in os.listdir('.') if fl.startswith('disk') and fl.endswith('.tmp')]
|
|
for tmp in tmps:
|
|
os.remove(tmp)
|
|
sys.exit(1)
|
|
|
|
if __name__ == '__main__':
|
|
main()
|