projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 92f5a8d4 TL |
1 | class VolSpec(object): |
| 2 | """ | |
| 3 | specification of a "volume" -- base directory and various prefixes. | |
| 4 | """ | |
| 5 | ||
| 6 | # where shall we (by default) create subvolumes | |
| 7 | DEFAULT_SUBVOL_PREFIX = "/volumes" | |
| 8 | # and the default namespace | |
| 9 | DEFAULT_NS_PREFIX = "fsvolumens_" | |
| a4b75251 TL |
10 | # default mode for subvol prefix and group |
| 11 | DEFAULT_MODE = 0o755 | |
| 92f5a8d4 TL |
12 | |
| 13 | def __init__(self, snapshot_prefix, subvolume_prefix=None, pool_ns_prefix=None): | |
| 14 | self.snapshot_prefix = snapshot_prefix | |
| 15 | self.subvolume_prefix = subvolume_prefix if subvolume_prefix else VolSpec.DEFAULT_SUBVOL_PREFIX | |
| 16 | self.pool_ns_prefix = pool_ns_prefix if pool_ns_prefix else VolSpec.DEFAULT_NS_PREFIX | |
| 17 | ||
| 18 | @property | |
| 19 | def snapshot_dir_prefix(self): | |
| 20 | """ | |
| 21 | Return the snapshot directory prefix | |
| 22 | """ | |
| 23 | return self.snapshot_prefix | |
| 24 | ||
| 25 | @property | |
| 26 | def base_dir(self): | |
| 27 | """ | |
| 28 | Return the top level directory under which subvolumes/groups are created | |
| 29 | """ | |
| 30 | return self.subvolume_prefix | |
| 31 | ||
| 32 | @property | |
| 33 | def fs_namespace(self): | |
| 34 | """ | |
| 35 | return a filesystem namespace by stashing pool namespace prefix and subvolume-id | |
| 36 | """ | |
| 37 | return self.pool_ns_prefix |