ceph/src/python-common/ceph/deployment/translate.py

   1 import logging
   2
   3 try:
   4     from typing import Optional, List
   5 except ImportError:
   6     pass
   7
   8 from ceph.deployment.drive_group import DriveGroupSpec
   9 from ceph.deployment.drive_selection.selector import DriveSelection
  10
  11 logger = logging.getLogger(__name__)
  12
  13
  14 class to_ceph_volume(object):
  15
  16     def __init__(self,
  17                  spec,  # type: DriveGroupSpec
  18                  selection,  # type: DriveSelection
  19                  osd_id_claims=None,  # type: Optional[List[str]]
  20                  preview=False  # type: bool
  21                  ):
  22
  23         self.spec = spec
  24         self.selection = selection
  25         self.preview = preview
  26         self.osd_id_claims = osd_id_claims
  27
  28     def run(self):
  29         # type: () -> Optional[str]
  30         """ Generate ceph-volume commands based on the DriveGroup filters """
  31         data_devices = [x.path for x in self.selection.data_devices()]
  32         db_devices = [x.path for x in self.selection.db_devices()]
  33         wal_devices = [x.path for x in self.selection.wal_devices()]
  34         journal_devices = [x.path for x in self.selection.journal_devices()]
  35
  36         if not data_devices:
  37             return None
  38
  39         cmd = ""
  40         if self.spec.objectstore == 'filestore':
  41             cmd = "lvm batch --no-auto"
  42
  43             cmd += " {}".format(" ".join(data_devices))
  44
  45             if self.spec.journal_size:
  46                 cmd += " --journal-size {}".format(self.spec.journal_size)
  47
  48             if journal_devices:
  49                 cmd += " --journal-devices {}".format(
  50                     ' '.join(journal_devices))
  51
  52             cmd += " --filestore"
  53
  54         # HORRIBLE HACK
  55         if self.spec.objectstore == 'bluestore' and \
  56            not self.spec.encrypted and \
  57            not self.spec.osds_per_device and \
  58            len(data_devices) == 1 and \
  59            not db_devices and \
  60            not wal_devices:
  61             cmd = "lvm prepare --bluestore --data %s --no-systemd" % (' '.join(data_devices))
  62             if self.osd_id_claims:
  63                 cmd += " --osd-id {}".format(str(self.osd_id_claims[0]))
  64             if self.preview:
  65                 # Like every horrible hack, this has sideffects on other features.
  66                 # In this case, 'lvm prepare' has neither a '--report' nor a '--format json' option
  67                 # which essentially doesn't allow for a proper previews here.
  68                 # Fall back to lvm batch in order to get a preview.
  69                 return f"lvm batch --no-auto {' '.join(data_devices)} --report --format json"
  70             return cmd
  71
  72         if self.spec.objectstore == 'bluestore':
  73
  74             cmd = "lvm batch --no-auto {}".format(" ".join(data_devices))
  75
  76             if db_devices:
  77                 cmd += " --db-devices {}".format(" ".join(db_devices))
  78
  79             if wal_devices:
  80                 cmd += " --wal-devices {}".format(" ".join(wal_devices))
  81
  82             if self.spec.block_wal_size:
  83                 cmd += " --block-wal-size {}".format(self.spec.block_wal_size)
  84
  85             if self.spec.block_db_size:
  86                 cmd += " --block-db-size {}".format(self.spec.block_db_size)
  87
  88         if self.spec.encrypted:
  89             cmd += " --dmcrypt"
  90
  91         if self.spec.osds_per_device:
  92             cmd += " --osds-per-device {}".format(self.spec.osds_per_device)
  93
  94         if self.osd_id_claims:
  95             cmd += " --osd-ids {}".format(" ".join(self.osd_id_claims))
  96
  97         cmd += " --yes"
  98         cmd += " --no-systemd"
  99
 100         if self.preview:
 101             cmd += " --report"
 102             cmd += " --format json"
 103
 104         return cmd