def _disk_dev(self, ks_disk):
# first we try to find a device that matches ks_disk
# comparing by-id and by-path links
matched = [
hu_disk['device'] for hu_disk in self.hu_disks
if match_device(hu_disk, ks_disk)
]
# if we can not find a device by its by-id and by-path links
# we try to find a device by its name
fallback = [
hu_disk['device'] for hu_disk in self.hu_disks
if '/dev/%s' % ks_disk['name'] == hu_disk['device']
]
# Due to udevadm bugs it can return the same ids for different disks.
# For instance for NVMe disks. In this case matched will contains
# more than 1 disk and we should use info from fallback
if len(matched) > 1 and len(fallback) == 1:
found = fallback
else:
found = matched or fallback
if not found or len(found) > 1:
raise errors.DiskNotFoundError('Disk not found: %s' %
ks_disk['name'])
return found[0]
def _disk_partition(self, ks_partition):
matched = [
hu_partition['name'] for hu_partition in self.hu_partitions
if self._match_data_by_pattern(hu_partition, ks_partition)
]
if not matched or len(matched) > 1:
raise errors.DiskNotFoundError(
'Disk not found with %s: %s' %
(ks_partition['id']['type'], ks_partition['id']['value']))
return matched[0]
def _disk_vg_dev(self, ks_vgs):
# first we try to find a device that matches ks_disk
# comparing by-id and by-path links
matched = [
hu_vg['name'] for hu_vg in self.hu_vgs
if self._match_data_by_pattern(hu_vg, ks_vgs)
]
# if we can not find a device by its by-id and by-path links
if not matched or len(matched) > 1:
raise errors.DiskNotFoundError(
'Disk not found with %s: %s' %
(ks_vgs['id']['type'], ks_vgs['id']['value']))
return matched[0]
def _verify_disk_size(parteds, hu_disks):
for parted in parteds:
disks = [d for d in hu_disks if d.get('name') == parted.name]
if not disks:
raise errors.DiskNotFoundError(
'No physical disks found matching: %s' % parted.name)
disk_size_bytes = disks[0].get('bspec', {}).get('size64')
if not disk_size_bytes:
raise ValueError('Cannot read size of the disk: %s'
% disks[0].get('name'))
# It's safer to understate the physical disk size
disk_size_mib = utils.B2MiB(disk_size_bytes, ceil=False)
if parted.disk_size > disk_size_mib:
raise errors.NotEnoughSpaceError(
'Partition scheme for: %(disk)s exceeds the size of the '
'disk. Scheme size is %(scheme_size)s MiB, and disk size '
'is %(disk_size)s MiB.' % {
'disk': parted.name, 'scheme_size': parted.disk_size,
'disk_size': disk_size_mib})