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d2e6a577 FG |
1 | from __future__ import print_function |
2 | import argparse | |
3efd9988 FG |
3 | import logging |
4 | import os | |
d2e6a577 FG |
5 | from textwrap import dedent |
6 | from ceph_volume import process, conf, decorators | |
181888fb | 7 | from ceph_volume.util import system, disk |
3efd9988 | 8 | from ceph_volume.util import prepare as prepare_utils |
d2e6a577 | 9 | from ceph_volume.systemd import systemctl |
3efd9988 FG |
10 | from ceph_volume.api import lvm as api |
11 | ||
12 | ||
13 | logger = logging.getLogger(__name__) | |
d2e6a577 FG |
14 | |
15 | ||
16 | def activate_filestore(lvs): | |
17 | # find the osd | |
18 | osd_lv = lvs.get(lv_tags={'ceph.type': 'data'}) | |
3efd9988 FG |
19 | if not osd_lv: |
20 | raise RuntimeError('Unable to find a data LV for filestore activation') | |
d2e6a577 | 21 | osd_id = osd_lv.tags['ceph.osd_id'] |
3efd9988 | 22 | conf.cluster = osd_lv.tags['ceph.cluster_name'] |
d2e6a577 FG |
23 | # it may have a volume with a journal |
24 | osd_journal_lv = lvs.get(lv_tags={'ceph.type': 'journal'}) | |
25 | # TODO: add sensible error reporting if this is ever the case | |
26 | # blow up with a KeyError if this doesn't exist | |
27 | osd_fsid = osd_lv.tags['ceph.osd_fsid'] | |
28 | if not osd_journal_lv: | |
181888fb FG |
29 | # must be a disk partition, by quering blkid by the uuid we are ensuring that the |
30 | # device path is always correct | |
31 | osd_journal = disk.get_device_from_partuuid(osd_lv.tags['ceph.journal_uuid']) | |
d2e6a577 | 32 | else: |
181888fb | 33 | osd_journal = osd_lv.tags['ceph.journal_device'] |
d2e6a577 FG |
34 | |
35 | if not osd_journal: | |
36 | raise RuntimeError('unable to detect an lv or device journal for OSD %s' % osd_id) | |
37 | ||
38 | # mount the osd | |
39 | source = osd_lv.lv_path | |
40 | destination = '/var/lib/ceph/osd/%s-%s' % (conf.cluster, osd_id) | |
3efd9988 | 41 | if not system.device_is_mounted(source, destination=destination): |
d2e6a577 FG |
42 | process.run(['sudo', 'mount', '-v', source, destination]) |
43 | ||
181888fb FG |
44 | # always re-do the symlink regardless if it exists, so that the journal |
45 | # device path that may have changed can be mapped correctly every time | |
46 | destination = '/var/lib/ceph/osd/%s-%s/journal' % (conf.cluster, osd_id) | |
47 | process.run(['sudo', 'ln', '-snf', osd_journal, destination]) | |
d2e6a577 FG |
48 | |
49 | # make sure that the journal has proper permissions | |
50 | system.chown(osd_journal) | |
51 | ||
52 | # enable the ceph-volume unit for this OSD | |
53 | systemctl.enable_volume(osd_id, osd_fsid, 'lvm') | |
54 | ||
55 | # start the OSD | |
56 | systemctl.start_osd(osd_id) | |
57 | ||
58 | ||
3efd9988 FG |
59 | def get_osd_device_path(osd_lv, lvs, device_type): |
60 | """ | |
61 | ``device_type`` can be one of ``db``, ``wal`` or ``block`` so that | |
62 | we can query ``lvs`` (a ``Volumes`` object) and fallback to querying the uuid | |
63 | if that is not present. | |
64 | ||
65 | Return a path if possible, failing to do that a ``None``, since some of these devices | |
66 | are optional | |
67 | """ | |
68 | osd_lv = lvs.get(lv_tags={'ceph.type': 'block'}) | |
69 | uuid_tag = 'ceph.%s_uuid' % device_type | |
70 | device_uuid = osd_lv.tags.get(uuid_tag) | |
71 | if not device_uuid: | |
72 | return None | |
73 | ||
74 | device_lv = lvs.get(lv_uuid=device_uuid) | |
75 | if device_lv: | |
76 | return device_lv.lv_path | |
77 | else: | |
78 | # this could be a regular device, so query it with blkid | |
79 | physical_device = disk.get_device_from_partuuid(device_uuid) | |
80 | return physical_device or None | |
81 | return None | |
82 | ||
83 | ||
d2e6a577 | 84 | def activate_bluestore(lvs): |
3efd9988 FG |
85 | # find the osd |
86 | osd_lv = lvs.get(lv_tags={'ceph.type': 'block'}) | |
87 | osd_id = osd_lv.tags['ceph.osd_id'] | |
88 | conf.cluster = osd_lv.tags['ceph.cluster_name'] | |
89 | osd_fsid = osd_lv.tags['ceph.osd_fsid'] | |
90 | db_device_path = get_osd_device_path(osd_lv, lvs, 'db') | |
91 | wal_device_path = get_osd_device_path(osd_lv, lvs, 'wal') | |
92 | ||
93 | # mount on tmpfs the osd directory | |
94 | osd_path = '/var/lib/ceph/osd/%s-%s' % (conf.cluster, osd_id) | |
95 | if not system.path_is_mounted(osd_path): | |
96 | # mkdir -p and mount as tmpfs | |
97 | prepare_utils.create_osd_path(osd_id, tmpfs=True) | |
98 | # XXX This needs to be removed once ceph-bluestore-tool can deal with | |
99 | # symlinks that exist in the osd dir | |
100 | for link_name in ['block', 'block.db', 'block.wal']: | |
101 | link_path = os.path.join(osd_path, link_name) | |
102 | if os.path.exists(link_path): | |
103 | os.unlink(os.path.join(osd_path, link_name)) | |
104 | # Once symlinks are removed, the osd dir can be 'primed again. | |
105 | process.run([ | |
106 | 'sudo', 'ceph-bluestore-tool', '--cluster=%s' % conf.cluster, | |
107 | 'prime-osd-dir', '--dev', osd_lv.lv_path, | |
108 | '--path', osd_path]) | |
109 | # always re-do the symlink regardless if it exists, so that the block, | |
110 | # block.wal, and block.db devices that may have changed can be mapped | |
111 | # correctly every time | |
112 | process.run(['sudo', 'ln', '-snf', osd_lv.lv_path, os.path.join(osd_path, 'block')]) | |
113 | system.chown(os.path.join(osd_path, 'block')) | |
114 | system.chown(osd_path) | |
115 | if db_device_path: | |
116 | destination = os.path.join(osd_path, 'block.db') | |
117 | process.run(['sudo', 'ln', '-snf', db_device_path, destination]) | |
118 | system.chown(db_device_path) | |
119 | if wal_device_path: | |
120 | destination = os.path.join(osd_path, 'block.wal') | |
121 | process.run(['sudo', 'ln', '-snf', wal_device_path, destination]) | |
122 | system.chown(wal_device_path) | |
123 | ||
124 | # enable the ceph-volume unit for this OSD | |
125 | systemctl.enable_volume(osd_id, osd_fsid, 'lvm') | |
126 | ||
127 | # start the OSD | |
128 | systemctl.start_osd(osd_id) | |
d2e6a577 FG |
129 | |
130 | ||
131 | class Activate(object): | |
132 | ||
133 | help = 'Discover and mount the LVM device associated with an OSD ID and start the Ceph OSD' | |
134 | ||
135 | def __init__(self, argv): | |
136 | self.argv = argv | |
137 | ||
138 | @decorators.needs_root | |
139 | def activate(self, args): | |
140 | lvs = api.Volumes() | |
141 | # filter them down for the OSD ID and FSID we need to activate | |
181888fb FG |
142 | if args.osd_id and args.osd_fsid: |
143 | lvs.filter(lv_tags={'ceph.osd_id': args.osd_id, 'ceph.osd_fsid': args.osd_fsid}) | |
144 | elif args.osd_fsid and not args.osd_id: | |
145 | lvs.filter(lv_tags={'ceph.osd_fsid': args.osd_fsid}) | |
d2e6a577 FG |
146 | if not lvs: |
147 | raise RuntimeError('could not find osd.%s with fsid %s' % (args.osd_id, args.osd_fsid)) | |
3efd9988 FG |
148 | # This argument is only available when passed in directly or via |
149 | # systemd, not when ``create`` is being used | |
150 | if getattr(args, 'auto_detect_objectstore', False): | |
151 | logger.info('auto detecting objectstore') | |
152 | # may get multiple lvs, so can't do lvs.get() calls here | |
153 | for lv in lvs: | |
154 | has_journal = lv.tags.get('ceph.journal_uuid') | |
155 | if has_journal: | |
156 | logger.info('found a journal associated with the OSD, assuming filestore') | |
157 | return activate_filestore(lvs) | |
158 | logger.info('unable to find a journal associated with the OSD, assuming bluestore') | |
159 | return activate_bluestore(lvs) | |
160 | if args.bluestore: | |
161 | activate_bluestore(lvs) | |
162 | elif args.filestore: | |
163 | activate_filestore(lvs) | |
d2e6a577 FG |
164 | |
165 | def main(self): | |
166 | sub_command_help = dedent(""" | |
167 | Activate OSDs by discovering them with LVM and mounting them in their | |
168 | appropriate destination: | |
169 | ||
170 | ceph-volume lvm activate {ID} {FSID} | |
171 | ||
172 | The lvs associated with the OSD need to have been prepared previously, | |
173 | so that all needed tags and metadata exist. | |
174 | ||
175 | """) | |
176 | parser = argparse.ArgumentParser( | |
177 | prog='ceph-volume lvm activate', | |
178 | formatter_class=argparse.RawDescriptionHelpFormatter, | |
179 | description=sub_command_help, | |
180 | ) | |
181 | ||
182 | parser.add_argument( | |
183 | 'osd_id', | |
184 | metavar='ID', | |
185 | nargs='?', | |
186 | help='The ID of the OSD, usually an integer, like 0' | |
187 | ) | |
188 | parser.add_argument( | |
189 | 'osd_fsid', | |
190 | metavar='FSID', | |
191 | nargs='?', | |
192 | help='The FSID of the OSD, similar to a SHA1' | |
193 | ) | |
3efd9988 FG |
194 | parser.add_argument( |
195 | '--auto-detect-objectstore', | |
196 | action='store_true', | |
197 | help='Autodetect the objectstore by inspecting the OSD', | |
198 | ) | |
d2e6a577 FG |
199 | parser.add_argument( |
200 | '--bluestore', | |
3efd9988 | 201 | action='store_true', |
d2e6a577 FG |
202 | help='filestore objectstore (not yet implemented)', |
203 | ) | |
204 | parser.add_argument( | |
205 | '--filestore', | |
3efd9988 | 206 | action='store_true', |
d2e6a577 FG |
207 | help='filestore objectstore (current default)', |
208 | ) | |
209 | if len(self.argv) == 0: | |
210 | print(sub_command_help) | |
211 | return | |
212 | args = parser.parse_args(self.argv) | |
3efd9988 FG |
213 | # Default to bluestore here since defaulting it in add_argument may |
214 | # cause both to be True | |
215 | if not args.bluestore and not args.filestore: | |
216 | args.bluestore = True | |
d2e6a577 | 217 | self.activate(args) |