예제 #1
0
    def delete(self, vm_name, dev_name):
        try:
            bus_type = self.lookup(vm_name, dev_name)['bus']
            dom = VMModel.get_vm(vm_name, self.conn)
        except NotFoundError:
            raise

        if (bus_type not in HOTPLUG_TYPE
                and DOM_STATE_MAP[dom.info()[0]] != 'shutoff'):
            raise InvalidOperation('KCHVMSTOR0011E')

        try:
            disk = get_device_node(dom, dev_name)
            path = get_vm_disk_info(dom, dev_name)['path']
            if path is None or len(path) < 1:
                path = self.lookup(vm_name, dev_name)['path']
            # This has to be done before it's detached. If it wasn't
            #   in the obj store, its ref count would have been updated
            #   by get_disk_used_by()
            if path is not None:
                used_by = get_disk_used_by(self.objstore, self.conn, path)
            else:
                wok_log.error("Unable to decrement volume used_by on"
                              " delete because no path could be found.")
            dom.detachDeviceFlags(etree.tostring(disk),
                                  get_vm_config_flag(dom, 'all'))
        except Exception as e:
            raise OperationFailed("KCHVMSTOR0010E", {'error': e.message})

        if used_by is not None and vm_name in used_by:
            used_by.remove(vm_name)
            set_disk_used_by(self.objstore, path, used_by)
        else:
            wok_log.error("Unable to update %s:%s used_by on delete." %
                          (vm_name, dev_name))
예제 #2
0
    def delete(self, vm_name, dev_name):
        try:
            bus_type = self.lookup(vm_name, dev_name)['bus']
            dom = VMModel.get_vm(vm_name, self.conn)
        except NotFoundError:
            raise

        if (bus_type not in HOTPLUG_TYPE and
                DOM_STATE_MAP[dom.info()[0]] != 'shutoff'):
            raise InvalidOperation('KCHVMSTOR0011E')

        try:
            disk = get_device_node(dom, dev_name)
            path = get_vm_disk_info(dom, dev_name)['path']
            if path is None or len(path) < 1:
                path = self.lookup(vm_name, dev_name)['path']
            # This has to be done before it's detached. If it wasn't
            #   in the obj store, its ref count would have been updated
            #   by get_disk_used_by()
            if path is not None:
                used_by = get_disk_used_by(self.objstore, self.conn, path)
            else:
                wok_log.error("Unable to decrement volume used_by on"
                              " delete because no path could be found.")
            dom.detachDeviceFlags(etree.tostring(disk),
                                  get_vm_config_flag(dom, 'all'))
        except Exception as e:
            raise OperationFailed("KCHVMSTOR0010E", {'error': e.message})

        if used_by is not None and vm_name in used_by:
            used_by.remove(vm_name)
            set_disk_used_by(self.objstore, path, used_by)
        else:
            wok_log.error("Unable to update %s:%s used_by on delete."
                          % (vm_name, dev_name))
예제 #3
0
    def update(self, vm_name, dev_name, params):
        old_disk_used_by = None
        new_disk_used_by = None

        dom = VMModel.get_vm(vm_name, self.conn)

        dev_info = self.lookup(vm_name, dev_name)
        if dev_info['type'] != 'cdrom':
            raise InvalidOperation("KCHVMSTOR0006E")

        params['path'] = params.get('path', '')
        old_disk_path = dev_info['path']
        new_disk_path = params['path']
        if new_disk_path != old_disk_path:
            # An empty path means a CD-ROM was empty or ejected:
            if old_disk_path is not '':
                old_disk_used_by = get_disk_used_by(self.objstore, self.conn,
                                                    old_disk_path)
            if new_disk_path is not '':
                new_disk_used_by = get_disk_used_by(self.objstore, self.conn,
                                                    new_disk_path)

        dev_info.update(params)
        dev, xml = get_disk_xml(dev_info)

        try:
            dom.updateDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
        except Exception as e:
            raise OperationFailed("KCHVMSTOR0009E", {'error': e.message})

        try:
            if old_disk_used_by is not None and \
               vm_name in old_disk_used_by:
                old_disk_used_by.remove(vm_name)
                set_disk_used_by(self.objstore, old_disk_path,
                                 old_disk_used_by)
            if new_disk_used_by is not None:
                new_disk_used_by.append(vm_name)
                set_disk_used_by(self.objstore, new_disk_path,
                                 new_disk_used_by)
        except Exception as e:
            wok_log.error("Unable to update dev used_by on update due to"
                          " %s:" % e.message)
        return dev
예제 #4
0
    def update(self, vm_name, dev_name, params):
        old_disk_used_by = None
        new_disk_used_by = None

        dom = VMModel.get_vm(vm_name, self.conn)

        dev_info = self.lookup(vm_name, dev_name)
        if dev_info['type'] != 'cdrom':
            raise InvalidOperation("KCHVMSTOR0006E")

        params['path'] = params.get('path', '')
        old_disk_path = dev_info['path']
        new_disk_path = params['path']
        if new_disk_path != old_disk_path:
            # An empty path means a CD-ROM was empty or ejected:
            if old_disk_path is not '':
                old_disk_used_by = get_disk_used_by(
                    self.objstore, self.conn, old_disk_path)
            if new_disk_path is not '':
                new_disk_used_by = get_disk_used_by(
                    self.objstore, self.conn, new_disk_path)

        dev_info.update(params)
        dev, xml = get_disk_xml(dev_info)

        try:
            dom.updateDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
        except Exception as e:
            raise OperationFailed("KCHVMSTOR0009E", {'error': e.message})

        try:
            if old_disk_used_by is not None and \
               vm_name in old_disk_used_by:
                old_disk_used_by.remove(vm_name)
                set_disk_used_by(self.objstore, old_disk_path,
                                 old_disk_used_by)
            if new_disk_used_by is not None:
                new_disk_used_by.append(vm_name)
                set_disk_used_by(self.objstore, new_disk_path,
                                 new_disk_used_by)
        except Exception as e:
            wok_log.error("Unable to update dev used_by on update due to"
                          " %s:" % e.message)
        return dev
예제 #5
0
    def lookup(self, pool, name):
        vol = StorageVolumeModel.get_storagevolume(pool, name, self.conn)
        path = vol.path()
        info = vol.info()
        xml = vol.XMLDesc(0)
        try:
            fmt = xpath_get_text(xml, "/volume/target/format/@type")[0]
        except IndexError:
            # Not all types of libvirt storage can provide volume format
            # infomation. When there is no format information, we assume
            # it's 'raw'.
            fmt = 'raw'

        iso_img = None

        # 'raw' volumes from 'logical' pools may actually be 'iso';
        # libvirt always reports them as 'raw'
        pool_info = self.storagepool.lookup(pool)
        if pool_info['type'] == 'logical' and fmt == 'raw':
            try:
                iso_img = IsoImage(path)
            except IsoFormatError:
                # not 'iso' afterall
                pass
            else:
                fmt = 'iso'

        # 'raw' volumes can not be valid image disks (e.g. XML, PDF, TXT are
        # raw files), so it's necessary check the 'content' of them
        isvalid = True
        if fmt == 'raw':
            try:
                ms = magic.open(magic.NONE)
                ms.load()
                if ms.file(path).lower() not in VALID_RAW_CONTENT:
                    isvalid = False
                ms.close()
            except UnicodeDecodeError:
                isvalid = False

        used_by = get_disk_used_by(self.objstore, self.conn, path)
        res = dict(type=VOLUME_TYPE_MAP[info[0]],
                   capacity=info[1],
                   allocation=info[2],
                   path=path,
                   used_by=used_by,
                   format=fmt,
                   isvalid=isvalid)
        if fmt == 'iso':
            if os.path.islink(path):
                path = os.path.join(os.path.dirname(path), os.readlink(path))
            os_distro = os_version = 'unknown'
            try:
                if iso_img is None:
                    iso_img = IsoImage(path)
                os_distro, os_version = iso_img.probe()
                bootable = True
            except IsoFormatError:
                bootable = False
            res.update(
                dict(os_distro=os_distro, os_version=os_version, path=path,
                     bootable=bootable))
        return res