48c8ae6819
In addition to monitoring the logs for errors, call a function (or
functions) that tell it to cancel the anaconda process and cleanup.
Also check for a cancel after creating the squashfs image for live-iso
since that's a long running process.
This required adding a new argument to a number of existing functions,
passing it down to VirtualInstall and novirt_install where the function
is called.
(cherry picked from commit 4b84475612)
Resolves: rhbz#1659129
622 lines
23 KiB
Python
622 lines
23 KiB
Python
#
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# Copyright (C) 2011-2017 Red Hat, Inc.
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#
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# This program 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 2 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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import logging
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log = logging.getLogger("pylorax")
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import os
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import tempfile
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import subprocess
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import shutil
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import hashlib
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import glob
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# Use Mako templates for appliance builder descriptions
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from mako.template import Template
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from mako.exceptions import text_error_template
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# Use pykickstart to calculate disk image size
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from pykickstart.parser import KickstartParser
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from pykickstart.version import makeVersion, RHEL7
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# Use the Lorax treebuilder branch for iso creation
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from pylorax import ArchData
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from pylorax.base import DataHolder
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from pylorax.treebuilder import TreeBuilder, RuntimeBuilder
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from pylorax.treebuilder import findkernels
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from pylorax.sysutils import joinpaths, remove
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from pylorax.imgutils import Mount, PartitionMount, copytree, mount, umount
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from pylorax.imgutils import mksquashfs, mkrootfsimg
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from pylorax.executils import execWithRedirect, runcmd
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from pylorax.installer import InstallError, novirt_install, virt_install
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RUNTIME = "images/install.img"
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# Default parameters for rebuilding initramfs, override with --dracut-args
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DRACUT_DEFAULT = ["--xz", "--add", "livenet dmsquash-live convertfs pollcdrom",
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"--omit", "plymouth", "--no-hostonly", "--no-early-microcode"]
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def get_ks_disk_size(ks):
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"""Return the size of the kickstart's disk partitions
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:param ks: The kickstart
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:type ks: Kickstart object
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:returns: The size of the disk, in GiB
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"""
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disk_size = 1 + (sum([p.size for p in ks.handler.partition.partitions]) / 1024)
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log.info("disk_size = %sGiB", disk_size)
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return disk_size
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def is_image_mounted(disk_img):
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"""
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Return True if the disk_img is mounted
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"""
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with open("/proc/mounts") as mounts:
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for _mount in mounts:
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fields = _mount.split()
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if len(fields) > 2 and fields[1] == disk_img:
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return True
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return False
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def find_ostree_root(phys_root):
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"""
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Find root of ostree deployment
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:param str phys_root: Path to physical root
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:returns: Relative path of ostree deployment root
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:rtype: str
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:raise Exception: More than one deployment roots were found
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"""
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ostree_root = ""
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ostree_sysroots = glob.glob(joinpaths(phys_root, "ostree/boot.0/*/*/0"))
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if ostree_sysroots:
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if len(ostree_sysroots) > 1:
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raise Exception("Too many deployment roots found: %s" % ostree_sysroots)
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ostree_root = os.path.relpath(ostree_sysroots[0], phys_root)
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return ostree_root
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class KernelInfo(object):
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"""
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Info about the kernels in boot_dir
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"""
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def __init__(self, boot_dir):
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self.boot_dir = boot_dir
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self.list = self.get_kernels()
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self.arch = self.get_kernel_arch()
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log.debug("kernel_list for %s = %s", self.boot_dir, self.list)
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log.debug("kernel_arch is %s", self.arch)
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def get_kernels(self):
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"""
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Get a list of the kernels in the boot_dir
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Examine the vmlinuz-* versions and return a list of them
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Ignore any with -rescue- in them, these are dracut rescue images.
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The user shoud add
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-dracut-config-rescue
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to the kickstart to remove them, but catch it here as well.
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"""
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files = os.listdir(self.boot_dir)
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return [f[8:] for f in files if f.startswith("vmlinuz-") \
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and f.find("-rescue-") == -1]
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def get_kernel_arch(self):
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"""
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Get the arch of the first kernel in boot_dir
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Defaults to i386
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"""
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if self.list:
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kernel_arch = self.list[0].split(".")[-1]
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else:
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kernel_arch = "i386"
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return kernel_arch
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def make_appliance(disk_img, name, template, outfile, networks=None, ram=1024,
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vcpus=1, arch=None, title="Linux", project="Linux",
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releasever="7"):
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"""
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Generate an appliance description file
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disk_img Full path of the disk image
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name Name of the appliance, passed to the template
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template Full path of Mako template
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outfile Full path of file to write, using template
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networks List of networks from the kickstart
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ram Ram, in MB, passed to template. Default is 1024
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vcpus CPUs, passed to template. Default is 1
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arch CPU architecture. Default is 'x86_64'
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title Title, passed to template. Default is 'Linux'
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project Project, passed to template. Default is 'Linux'
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releasever Release version, passed to template. Default is 17
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"""
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if not (disk_img and template and outfile):
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return None
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log.info("Creating appliance definition using %s", template)
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if not arch:
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arch = "x86_64"
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log.info("Calculating SHA256 checksum of %s", disk_img)
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sha256 = hashlib.sha256()
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with open(disk_img) as f:
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while True:
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data = f.read(1024*1024)
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if not data:
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break
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sha256.update(data)
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log.info("SHA256 of %s is %s", disk_img, sha256.hexdigest())
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disk_info = DataHolder(name=os.path.basename(disk_img), format="raw",
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checksum_type="sha256", checksum=sha256.hexdigest())
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try:
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result = Template(filename=template).render(disks=[disk_info], name=name,
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arch=arch, memory=ram, vcpus=vcpus, networks=networks,
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title=title, project=project, releasever=releasever)
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except Exception:
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log.error(text_error_template().render())
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raise
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with open(outfile, "w") as f:
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f.write(result)
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def make_runtime(opts, mount_dir, work_dir):
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"""
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Make the squashfs image from a directory
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Result is in work_dir+RUNTIME
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"""
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kernels = KernelInfo(joinpaths(mount_dir, "boot" ))
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# Fake yum object
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fake_yum = DataHolder(conf=DataHolder(installroot=mount_dir))
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# Fake arch with only basearch set
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arch = ArchData(kernels.arch)
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# TODO: Need to get release info from someplace...
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product = DataHolder(name=opts.project, version=opts.releasever, release="",
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variant="", bugurl="", isfinal=False)
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# This is a mounted image partition, cannot hardlink to it, so just use it
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# symlink mount_dir/images to work_dir/images so we don't run out of space
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os.makedirs(joinpaths(work_dir, "images"))
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rb = RuntimeBuilder(product, arch, fake_yum)
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log.info("Creating runtime")
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rb.create_runtime(joinpaths(work_dir, RUNTIME), size=None)
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def rebuild_initrds_for_live(opts, sys_root_dir, results_dir):
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"""
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Rebuild intrds for pxe live image (root=live:http://)
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:param opts: options passed to livemedia-creator
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:type opts: argparse options
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:param str sys_root_dir: Path to root of the system
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:param str results_dir: Path of directory for storing results
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"""
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if not opts.dracut_args:
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dracut_args = DRACUT_DEFAULT
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else:
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dracut_args = []
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for arg in opts.dracut_args:
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dracut_args += arg.split(" ", 1)
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log.info("dracut args = %s", dracut_args)
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dracut = ["dracut", "--nomdadmconf", "--nolvmconf"] + dracut_args
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kdir = "boot"
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if opts.ostree:
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kernels_dir = glob.glob(joinpaths(sys_root_dir, "boot/ostree/*"))[0]
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kdir = os.path.relpath(kernels_dir, sys_root_dir)
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kernels = [kernel for kernel in findkernels(sys_root_dir, kdir)
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if hasattr(kernel, "initrd")]
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if not kernels:
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raise Exception("No initrds found, cannot rebuild_initrds")
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# Hush some dracut warnings. TODO: bind-mount proc in place?
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open(joinpaths(sys_root_dir,"/proc/modules"),"w")
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if opts.ostree:
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# Dracut assumes to have some dirs in disk image
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# /var/tmp for temp files
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vartmp_dir = joinpaths(sys_root_dir, "var/tmp")
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if not os.path.isdir(vartmp_dir):
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os.mkdir(vartmp_dir)
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# /root (maybe not fatal)
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root_dir = joinpaths(sys_root_dir, "var/roothome")
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if not os.path.isdir(root_dir):
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os.mkdir(root_dir)
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# /tmp (maybe not fatal)
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tmp_dir = joinpaths(sys_root_dir, "sysroot/tmp")
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if not os.path.isdir(tmp_dir):
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os.mkdir(tmp_dir)
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for kernel in kernels:
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outfile = kernel.initrd.path + ".live"
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log.info("rebuilding %s", outfile)
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kver = kernel.version
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cmd = dracut + [outfile, kver]
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runcmd(cmd, root=sys_root_dir)
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new_initrd_path = joinpaths(results_dir, os.path.basename(kernel.initrd.path))
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shutil.move(joinpaths(sys_root_dir, outfile), new_initrd_path)
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os.chmod(new_initrd_path, 0644)
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shutil.copy2(joinpaths(sys_root_dir, kernel.path), results_dir)
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os.unlink(joinpaths(sys_root_dir,"/proc/modules"))
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def create_pxe_config(template, images_dir, live_image_name, add_args = None):
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"""
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Create template for pxe to live configuration
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:param str images_dir: Path of directory with images to be used
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:param str live_image_name: Name of live rootfs image file
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:param list add_args: Arguments to be added to initrd= pxe config
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"""
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add_args = add_args or []
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kernels = [kernel for kernel in findkernels(images_dir, kdir="")
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if hasattr(kernel, "initrd")]
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if not kernels:
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return
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kernel = kernels[0]
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add_args_str = " ".join(add_args)
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try:
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result = Template(filename=template).render(kernel=kernel.path,
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initrd=kernel.initrd.path, liveimg=live_image_name,
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addargs=add_args_str)
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except Exception:
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log.error(text_error_template().render())
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raise
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with open (joinpaths(images_dir, "PXE_CONFIG"), "w") as f:
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f.write(result)
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def make_livecd(opts, mount_dir, work_dir):
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"""
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Take the content from the disk image and make a livecd out of it
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This uses wwood's squashfs live initramfs method:
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* put the real / into LiveOS/rootfs.img
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* make a squashfs of the LiveOS/rootfs.img tree
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* make a simple initramfs with the squashfs.img and /etc/cmdline in it
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* make a cpio of that tree
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* append the squashfs.cpio to a dracut initramfs for each kernel installed
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Then on boot dracut reads /etc/cmdline which points to the squashfs.img
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mounts that and then mounts LiveOS/rootfs.img as /
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"""
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kernels = KernelInfo(joinpaths(mount_dir, "boot" ))
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arch = ArchData(kernels.arch)
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# TODO: Need to get release info from someplace...
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product = DataHolder(name=opts.project, version=opts.releasever, release="",
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variant="", bugurl="", isfinal=False)
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# Link /images to work_dir/images to make the templates happy
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if os.path.islink(joinpaths(mount_dir, "images")):
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os.unlink(joinpaths(mount_dir, "images"))
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execWithRedirect("/bin/ln", ["-s", joinpaths(work_dir, "images"),
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joinpaths(mount_dir, "images")])
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# The templates expect the config files to be in /tmp/config_files
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# I think these should be release specific, not from lorax, but for now
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configdir = joinpaths(opts.lorax_templates,"live/config_files/")
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configdir_path = "tmp/config_files"
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fullpath = joinpaths(mount_dir, configdir_path)
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if os.path.exists(fullpath):
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remove(fullpath)
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shutil.copytree(configdir, fullpath)
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isolabel = opts.volid or "{0.name} {0.version} {1.basearch}".format(product, arch)
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if len(isolabel) > 32:
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isolabel = isolabel[:32]
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log.warn("Truncating isolabel to 32 chars: %s", isolabel)
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tb = TreeBuilder(product=product, arch=arch, domacboot=opts.domacboot,
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inroot=mount_dir, outroot=work_dir,
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runtime=RUNTIME, isolabel=isolabel,
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templatedir=joinpaths(opts.lorax_templates,"live/"))
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log.info( "Rebuilding initrds" )
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if not opts.dracut_args:
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dracut_args = DRACUT_DEFAULT
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else:
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dracut_args = []
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for arg in opts.dracut_args:
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dracut_args += arg.split(" ", 1)
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log.info("dracut args = %s", dracut_args)
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tb.rebuild_initrds(add_args=dracut_args)
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log.info("Building boot.iso")
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tb.build()
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return work_dir
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def mount_boot_part_over_root(img_mount):
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"""
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Mount boot partition to /boot of root fs mounted in img_mount
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Used for OSTree so it finds deployment configurations on live rootfs
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param img_mount: object with mounted disk image root partition
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type img_mount: imgutils.PartitionMount
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"""
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root_dir = img_mount.mount_dir
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is_boot_part = lambda dir: os.path.exists(dir+"/loader.0")
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tmp_mount_dir = tempfile.mkdtemp()
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sys_root = find_ostree_root(root_dir)
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sysroot_boot_dir = None
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for dev, _size in img_mount.loop_devices:
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if dev is img_mount.mount_dev:
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continue
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try:
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mount("/dev/mapper/"+dev, mnt=tmp_mount_dir)
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if is_boot_part(tmp_mount_dir):
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umount(tmp_mount_dir)
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sysroot_boot_dir = joinpaths(joinpaths(root_dir, sys_root), "boot")
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mount("/dev/mapper/"+dev, mnt=sysroot_boot_dir)
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break
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else:
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umount(tmp_mount_dir)
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except subprocess.CalledProcessError as e:
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log.debug("Looking for boot partition error: %s", e)
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remove(tmp_mount_dir)
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return sysroot_boot_dir
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def make_squashfs(disk_img, work_dir, compression="xz"):
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"""
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Take disk_img and put it into LiveOS/rootfs.img and squashfs this
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tree into work_dir+RUNTIME
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"""
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liveos_dir = joinpaths(work_dir, "runtime/LiveOS")
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os.makedirs(liveos_dir)
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os.makedirs(os.path.dirname(joinpaths(work_dir, RUNTIME)))
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rc = execWithRedirect("/bin/ln", [disk_img, joinpaths(liveos_dir, "rootfs.img")])
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if rc != 0:
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shutil.copy2(disk_img, joinpaths(liveos_dir, "rootfs.img"))
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mksquashfs(joinpaths(work_dir, "runtime"),
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joinpaths(work_dir, RUNTIME), compression)
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remove(joinpaths(work_dir, "runtime"))
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def make_image(opts, ks, cancel_func=None):
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"""
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Install to an image
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Use virt or anaconda to install to an image.
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Returns the full path of of the image created.
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"""
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disk_size = get_ks_disk_size(ks)
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if opts.image_name:
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disk_img = joinpaths(opts.result_dir, opts.image_name)
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else:
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disk_img = tempfile.mktemp(prefix="disk", suffix=".img", dir=opts.result_dir)
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log.info("disk_img = %s", disk_img)
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try:
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if opts.no_virt:
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novirt_install(opts, disk_img, disk_size, ks.handler.method.url, cancel_func=cancel_func)
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else:
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install_log = os.path.abspath(os.path.dirname(opts.logfile))+"/virt-install.log"
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log.info("install_log = %s", install_log)
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virt_install(opts, install_log, disk_img, disk_size, cancel_func=cancel_func)
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except InstallError as e:
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log.error("Install failed: %s", e)
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if not opts.keep_image:
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log.info("Removing bad disk image")
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if os.path.exists(disk_img):
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os.unlink(disk_img)
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raise
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log.info("Disk Image install successful")
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return disk_img
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def make_live_images(opts, work_dir, root_dir, rootfs_image=None, size=None):
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"""
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Create live images from direcory or rootfs image
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:param opts: options passed to livemedia-creator
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:type opts: argparse options
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:param str work_dir: Directory for storing results
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:param str root_dir: Root directory of live filesystem tree
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:param str rootfs_image: Path to live rootfs image to be used
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:returns: Path of directory with created images
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:rtype: str
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"""
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sys_root = ""
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if opts.ostree:
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sys_root = find_ostree_root(root_dir)
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squashfs_root_dir = joinpaths(work_dir, "squashfs_root")
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liveos_dir = joinpaths(squashfs_root_dir, "LiveOS")
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os.makedirs(liveos_dir)
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if rootfs_image:
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rc = execWithRedirect("/bin/ln", [rootfs_image, joinpaths(liveos_dir, "rootfs.img")])
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if rc != 0:
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shutil.copy2(rootfs_image, joinpaths(liveos_dir, "rootfs.img"))
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else:
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log.info("Creating live rootfs image")
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mkrootfsimg(root_dir, joinpaths(liveos_dir, "rootfs.img"), "LiveOS", size=size, sysroot=sys_root)
|
|
|
|
log.info("Packing live rootfs image")
|
|
add_pxe_args = []
|
|
live_image_name = "live-rootfs.squashfs.img"
|
|
mksquashfs(squashfs_root_dir,
|
|
joinpaths(work_dir, live_image_name),
|
|
opts.compression,
|
|
opts.compress_args)
|
|
|
|
remove(squashfs_root_dir)
|
|
|
|
log.info("Rebuilding initramfs for live")
|
|
rebuild_initrds_for_live(opts, joinpaths(root_dir, sys_root), work_dir)
|
|
|
|
if opts.ostree:
|
|
add_pxe_args.append("ostree=/%s" % sys_root)
|
|
template = joinpaths(opts.lorax_templates, "pxe-live/pxe-config.tmpl")
|
|
create_pxe_config(template, work_dir, live_image_name, add_pxe_args)
|
|
|
|
return work_dir
|
|
|
|
def run_creator(opts, cancel_func=None):
|
|
"""Run the image creator process
|
|
|
|
:param opts: Commandline options to control the process
|
|
:type opts: Either a DataHolder or ArgumentParser
|
|
:returns: The result directory and the disk image path.
|
|
:rtype: Tuple of str
|
|
|
|
This function takes the opts arguments and creates the selected output image.
|
|
See the cmdline --help for livemedia-creator for the possible options
|
|
|
|
(Yes, this is not ideal, but we can fix that later)
|
|
"""
|
|
result_dir = None
|
|
|
|
# Parse the kickstart
|
|
if opts.ks:
|
|
ks_version = makeVersion(RHEL7)
|
|
ks = KickstartParser( ks_version, errorsAreFatal=False, missingIncludeIsFatal=False )
|
|
ks.readKickstart( opts.ks[0] )
|
|
|
|
# Make the disk or filesystem image
|
|
if not opts.disk_image and not opts.fs_image:
|
|
if not opts.ks:
|
|
raise RuntimeError("Image creation requires a kickstart file")
|
|
|
|
errors = []
|
|
if ks.handler.method.method != "url" and opts.no_virt:
|
|
errors.append("Only url install method is currently supported. Please "
|
|
"fix your kickstart file." )
|
|
|
|
if ks.handler.displaymode.displayMode is not None:
|
|
errors.append("The kickstart must not set a display mode (text, cmdline, "
|
|
"graphical), this will interfere with livemedia-creator.")
|
|
|
|
if opts.make_fsimage:
|
|
# Make sure the kickstart isn't using autopart and only has a / mountpoint
|
|
part_ok = not any(p for p in ks.handler.partition.partitions
|
|
if p.mountpoint not in ["/", "swap"])
|
|
if not part_ok or ks.handler.autopart.seen:
|
|
errors.append("Filesystem images must use a single / part, not autopart or "
|
|
"multiple partitions. swap is allowed but not used.")
|
|
|
|
if errors:
|
|
raise RuntimeError("\n".join(errors))
|
|
|
|
# Make the image. Output of this is either a partitioned disk image or a fsimage
|
|
# Can also fail with InstallError
|
|
disk_img = make_image(opts, ks, cancel_func=cancel_func)
|
|
|
|
if cancel_func and cancel_func():
|
|
raise RuntimeError("image creation canceled")
|
|
|
|
# Only create the disk image, return that now
|
|
if opts.image_only:
|
|
return (result_dir, disk_img)
|
|
|
|
if opts.make_iso:
|
|
work_dir = tempfile.mkdtemp()
|
|
log.info("working dir is %s", work_dir)
|
|
|
|
if (opts.fs_image or opts.no_virt) and not opts.disk_image:
|
|
# Create iso from a filesystem image
|
|
disk_img = opts.fs_image or disk_img
|
|
|
|
make_squashfs(disk_img, work_dir)
|
|
|
|
if cancel_func and cancel_func():
|
|
raise RuntimeError("ISO creation canceled")
|
|
|
|
with Mount(disk_img, opts="loop") as mount_dir:
|
|
result_dir = make_livecd(opts, mount_dir, work_dir)
|
|
else:
|
|
# Create iso from a partitioned disk image
|
|
disk_img = opts.disk_image or disk_img
|
|
with PartitionMount(disk_img) as img_mount:
|
|
if img_mount and img_mount.mount_dir:
|
|
make_runtime(opts, img_mount.mount_dir, work_dir)
|
|
result_dir = make_livecd(opts, img_mount.mount_dir, work_dir)
|
|
|
|
# cleanup the mess
|
|
# cleanup work_dir?
|
|
if disk_img and not (opts.keep_image or opts.disk_image or opts.fs_image):
|
|
os.unlink(disk_img)
|
|
log.info("Disk image erased")
|
|
disk_img = None
|
|
elif opts.make_appliance:
|
|
if not opts.ks:
|
|
networks = []
|
|
else:
|
|
networks = ks.handler.network.network
|
|
make_appliance(opts.disk_image or disk_img, opts.app_name,
|
|
opts.app_template, opts.app_file, networks, opts.ram,
|
|
opts.vcpus, opts.arch, opts.title, opts.project, opts.releasever)
|
|
elif opts.make_pxe_live:
|
|
work_dir = tempfile.mkdtemp()
|
|
log.info("working dir is %s", work_dir)
|
|
|
|
if (opts.fs_image or opts.no_virt) and not opts.disk_image:
|
|
# Create pxe live images from a filesystem image
|
|
disk_img = opts.fs_image or disk_img
|
|
with Mount(disk_img, opts="loop") as mnt_dir:
|
|
result_dir = make_live_images(opts, work_dir, mnt_dir, rootfs_image=disk_img)
|
|
else:
|
|
# Create pxe live images from a partitioned disk image
|
|
disk_img = opts.disk_image or disk_img
|
|
is_root_part = None
|
|
if opts.ostree:
|
|
is_root_part = lambda dir: os.path.exists(dir+"/ostree/deploy")
|
|
with PartitionMount(disk_img, mount_ok=is_root_part) as img_mount:
|
|
if img_mount and img_mount.mount_dir:
|
|
try:
|
|
mounted_sysroot_boot_dir = None
|
|
if opts.ostree:
|
|
mounted_sysroot_boot_dir = mount_boot_part_over_root(img_mount)
|
|
if opts.live_rootfs_keep_size:
|
|
size = img_mount.mount_size / 1024**3
|
|
else:
|
|
size = opts.live_rootfs_size or None
|
|
result_dir = make_live_images(opts, work_dir, img_mount.mount_dir, size=size)
|
|
finally:
|
|
if mounted_sysroot_boot_dir:
|
|
umount(mounted_sysroot_boot_dir)
|
|
|
|
if opts.result_dir != opts.tmp and result_dir:
|
|
copytree(result_dir, opts.result_dir, preserve=False)
|
|
shutil.rmtree( result_dir )
|
|
result_dir = None
|
|
|
|
return (result_dir, disk_img)
|