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']]
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_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]