Revision d8aee57e lib/config.py
| b/lib/config.py | ||
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class ConfigWriter: |
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"""The interface to the cluster configuration. |
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@ivar _temporary_lvs: reservation manager for temporary LVs |
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@ivar _all_rms: a list of all temporary reservation managers |
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""" |
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def __init__(self, cfg_file=None, offline=False): |
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self.write_count = 0 |
| ... | ... | |
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self._temporary_drbds = {}
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self._temporary_macs = TemporaryReservationManager() |
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self._temporary_secrets = TemporaryReservationManager() |
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self._temporary_lvs = TemporaryReservationManager() |
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self._all_rms = [self._temporary_ids, self._temporary_macs, |
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self._temporary_secrets, self._temporary_lvs] |
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# Note: in order to prevent errors when resolving our name in |
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# _DistributeConfig, we compute it here once and reuse it; it's |
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# better to raise an error before starting to modify the config |
| ... | ... | |
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self._temporary_macs.Reserve(mac, ec_id) |
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@locking.ssynchronized(_config_lock, shared=1) |
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def ReserveLV(self, lv_name, ec_id): |
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"""Reserve an VG/LV pair for an instance. |
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@type lv_name: string |
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@param lv_name: the logical volume name to reserve |
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""" |
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all_lvs = self._AllLVs() |
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if lv_name in all_lvs: |
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raise errors.ReservationError("LV already in use")
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else: |
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self._temporary_lvs.Reserve(lv_name, ec_id) |
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@locking.ssynchronized(_config_lock, shared=1) |
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def GenerateDRBDSecret(self, ec_id): |
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"""Generate a DRBD secret. |
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|
| ... | ... | |
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"""Drop per-execution-context reservations |
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""" |
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self._temporary_ids.DropECReservations(ec_id) |
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self._temporary_macs.DropECReservations(ec_id) |
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self._temporary_secrets.DropECReservations(ec_id) |
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for rm in self._all_rms: |
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rm.DropECReservations(ec_id) |
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