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))
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))
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
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
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 != '':
old_disk_used_by = get_disk_used_by(self.conn, old_disk_path)
if new_disk_path != '':
new_disk_used_by = get_disk_used_by(self.conn, new_disk_path)
dev_info.update(params)
dev, xml = get_disk_xml(dev_info)
try:
# FIXME: when updating from local file to remote file (http)
# libvirt adds a new device with same name instead of replacing
# the existing one
dom.updateDeviceFlags(xml, get_vm_config_flag(dom, 'all'))
except Exception as e:
raise OperationFailed('KCHVMSTOR0009E', {'error': str(e)})
try:
if old_disk_used_by is not None and vm_name in old_disk_used_by:
old_disk_used_by.remove(vm_name)
if new_disk_used_by is not None:
new_disk_used_by.append(vm_name)
except Exception as e:
wok_log.error('Unable to update dev used_by on update due to'
' %s:' % str(e))
return dev
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
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':
# Check if file is a symlink to a real block device,
# if so, don't check it's contents for validity
if not os.path.islink(path):
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
else: # We are a symlink
if '/dev/dm-' in os.path.realpath(path):
# This is most likely a real blockdevice
isvalid = True
wok_log.error('symlink detected, validated the disk')
else:
# Doesn't point to a known blockdevice
isvalid = False
used_by = get_disk_used_by(self.conn, path)
if self.libvirt_user is None:
self.libvirt_user = UserTests().probe_user()
ret, _ = probe_file_permission_as_user(os.path.realpath(path),
self.libvirt_user)
res = dict(
type=VOLUME_TYPE_MAP[info[0]],
capacity=info[1],
allocation=info[2],
path=path,
used_by=used_by,
format=fmt,
isvalid=isvalid,
has_permission=ret,
)
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