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# Copyright 2007 Red Hat, Inc.
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# David Lutterkort <dlutter@redhat.com>
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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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# 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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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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import CapabilitiesParser as Cap
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from VirtualDisk import VirtualDisk
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from virtinst import _virtinst as _
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class ImageInstallerException(Exception):
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def __init__(self, msg):
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Exception.__init__(self, msg)
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class ImageInstaller(Installer.Installer):
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"""Installer for image-based guests"""
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def __init__(self, image, capabilities=None, boot_index=None, conn=None):
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Installer.Installer.__init__(self, conn=conn)
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self._capabilities = Cap.parse(self.conn.getCapabilities())
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if not isinstance(capabilities, Cap.Capabilities):
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raise ValueError(_("'capabilities' must be a "
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"Capabilities instance."))
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self._capabilities = capabilities
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raise ValueError(_("'conn' or 'capabilities' must be specified."))
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# Set boot _boot_caps/_boot_parameters
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if boot_index is None:
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self._boot_caps = match_boots(self._capabilities,
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self.image.domain.boots)
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if self._boot_caps is None:
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raise ImageInstallerException(_("Could not find suitable boot "
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"descriptor for this host"))
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(boot_index + 1) > len(image.domain.boots)):
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raise ValueError(_("boot_index out of range."))
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self._boot_caps = image.domain.boots[boot_index]
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# Set up internal caps.guest object
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self._guest = self._capabilities.guestForOSType(self.boot_caps.type,
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if self._guest is None:
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raise PlatformMatchException(_("Unsupported virtualization type: "
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"%s %s" % (self.boot_caps.type,
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self.boot_caps.arch)))
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self.os_type = self.boot_caps.type
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self._domain = self._guest.bestDomainType()
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self.type = self._domain.hypervisor_type
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self.arch = self._guest.arch
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# Custom ImageInstaller methods
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if self._boot_caps.type == "hvm":
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image = property(get_image)
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def get_boot_caps(self):
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return self._boot_caps
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boot_caps = property(get_boot_caps)
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# General Installer methods
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def prepare(self, guest, meter, distro = None):
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self._make_disks(guest)
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for f in ['pae', 'acpi', 'apic']:
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if self.boot_caps.features[f] & Cap.FEATURE_ON:
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guest.features[f] = True
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elif self.boot_caps.features[f] & Cap.FEATURE_OFF:
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guest.features[f] = False
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def get_install_xml(self, guest, isinstall):
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kernel = { "kernel" : self.boot_caps.kernel,
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"initrd" : self.boot_caps.initrd,
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"extrargs" : self.boot_caps.cmdline }
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if self.boot_caps.kernel:
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# FYI: self.boot_caps.loader is _not_ analagous to guest loader tag
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return self._get_osblob_helper(guest, isinstall=isinstall,
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bootdev=self.boot_caps.bootdev)
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def post_install_check(self, guest):
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def _make_disks(self, guest):
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for m in self.boot_caps.drives:
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p = self._abspath(m.disk.file)
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if m.disk.size is not None:
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s = float(m.disk.size)/1024
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# FIXME: This is awkward; the image should be able to express
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# whether the disk is expected to be there or not independently
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# of its classification, especially for user disks
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# FIXME: We ignore the target for the mapping in m.target
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if (m.disk.use == ImageParser.Disk.USE_SYSTEM and
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not os.path.exists(p)):
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raise ImageInstallerException(_("System disk %s does not exist")
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device = VirtualDisk.DEVICE_DISK
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if m.disk.format == ImageParser.Disk.FORMAT_ISO:
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device = VirtualDisk.DEVICE_CDROM
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d = VirtualDisk(p, s,
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type = VirtualDisk.TYPE_FILE)
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guest._add_install_dev(d)
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def _abspath(self, p):
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return self.image.abspath(p)
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class PlatformMatchException(Exception):
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def __init__(self, msg):
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Exception.__init__(self, msg)
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def match_boots(capabilities, boots):
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for g in capabilities.guests:
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if b.type == g.os_type and b.arch == g.arch:
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for bf in b.features.names():
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if not b.features[bf] & g.features[bf]:
added
removed
virtinst/ImageInstaller.py
