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20effc67 TL |
1 | # -*- mode: YAML -*- |
2 | --- | |
3 | ||
4 | options: | |
5 | - name: mds_alternate_name_max | |
6 | type: size | |
7 | level: advanced | |
8 | desc: set the maximum length of alternate names for dentries | |
9 | default: 8_K | |
10 | services: | |
11 | - mds | |
12 | flags: | |
13 | - runtime | |
14 | - name: mds_valgrind_exit | |
15 | type: bool | |
16 | level: dev | |
17 | default: false | |
18 | services: | |
19 | - mds | |
20 | flags: | |
21 | - runtime | |
22 | - name: mds_standby_replay_damaged | |
23 | type: bool | |
24 | level: dev | |
25 | default: false | |
26 | flags: | |
27 | - runtime | |
28 | - name: mds_numa_node | |
29 | type: int | |
30 | level: advanced | |
31 | desc: set mds's cpu affinity to a numa node (-1 for none) | |
32 | default: -1 | |
33 | services: | |
34 | - mds | |
35 | flags: | |
36 | - startup | |
37 | - name: mds_data | |
38 | type: str | |
39 | level: advanced | |
40 | desc: path to MDS data and keyring | |
41 | default: /var/lib/ceph/mds/$cluster-$id | |
42 | services: | |
43 | - mds | |
44 | flags: | |
45 | - no_mon_update | |
46 | with_legacy: true | |
47 | - name: mds_join_fs | |
48 | type: str | |
49 | level: basic | |
50 | desc: file system MDS prefers to join | |
51 | long_desc: This setting indicates which file system name the MDS should prefer to | |
52 | join (affinity). The monitors will try to have the MDS cluster safely reach a | |
53 | state where all MDS have strong affinity, even via failovers to a standby. | |
54 | services: | |
55 | - mds | |
56 | flags: | |
57 | - runtime | |
58 | # max xattr kv pairs size for each dir/file | |
59 | - name: mds_max_xattr_pairs_size | |
60 | type: size | |
61 | level: advanced | |
62 | desc: maximum aggregate size of extended attributes on a file | |
63 | default: 64_K | |
64 | services: | |
65 | - mds | |
66 | with_legacy: true | |
67 | - name: mds_cache_trim_interval | |
68 | type: secs | |
69 | level: advanced | |
70 | desc: interval in seconds between cache trimming | |
71 | default: 1 | |
72 | services: | |
73 | - mds | |
74 | flags: | |
75 | - runtime | |
76 | - name: mds_cache_release_free_interval | |
77 | type: secs | |
78 | level: dev | |
79 | desc: interval in seconds between heap releases | |
80 | default: 10 | |
81 | services: | |
82 | - mds | |
83 | flags: | |
84 | - runtime | |
85 | - name: mds_cache_memory_limit | |
86 | type: size | |
87 | level: basic | |
88 | desc: target maximum memory usage of MDS cache | |
89 | long_desc: This sets a target maximum memory usage of the MDS cache and is the primary | |
90 | tunable to limit the MDS memory usage. The MDS will try to stay under a reservation | |
91 | of this limit (by default 95%; 1 - mds_cache_reservation) by trimming unused metadata | |
92 | in its cache and recalling cached items in the client caches. It is possible for | |
93 | the MDS to exceed this limit due to slow recall from clients. The mds_health_cache_threshold | |
94 | (150%) sets a cache full threshold for when the MDS signals a cluster health warning. | |
95 | default: 4_G | |
96 | services: | |
97 | - mds | |
98 | flags: | |
99 | - runtime | |
100 | - name: mds_cache_reservation | |
101 | type: float | |
102 | level: advanced | |
103 | desc: amount of memory to reserve for future cached objects | |
104 | fmt_desc: The cache reservation (memory or inodes) for the MDS cache to maintain. | |
105 | Once the MDS begins dipping into its reservation, it will recall | |
106 | client state until its cache size shrinks to restore the | |
107 | reservation. | |
108 | default: 0.05 | |
109 | services: | |
110 | - mds | |
111 | flags: | |
112 | - runtime | |
113 | - name: mds_health_cache_threshold | |
114 | type: float | |
115 | level: advanced | |
116 | desc: threshold for cache size to generate health warning | |
117 | default: 1.5 | |
118 | services: | |
119 | - mds | |
120 | - name: mds_cache_mid | |
121 | type: float | |
122 | level: advanced | |
123 | desc: midpoint for MDS cache LRU | |
124 | fmt_desc: The insertion point for new items in the cache LRU | |
125 | (from the top). | |
126 | default: 0.7 | |
127 | services: | |
128 | - mds | |
129 | - name: mds_cache_trim_decay_rate | |
130 | type: float | |
131 | level: advanced | |
132 | desc: decay rate for trimming MDS cache throttle | |
133 | default: 1 | |
134 | services: | |
135 | - mds | |
136 | flags: | |
137 | - runtime | |
138 | - name: mds_cache_trim_threshold | |
139 | type: size | |
140 | level: advanced | |
141 | desc: threshold for number of dentries that can be trimmed | |
142 | default: 256_K | |
143 | services: | |
144 | - mds | |
145 | flags: | |
146 | - runtime | |
147 | - name: mds_max_file_recover | |
148 | type: uint | |
149 | level: advanced | |
150 | desc: maximum number of files to recover file sizes in parallel | |
151 | default: 32 | |
152 | services: | |
153 | - mds | |
154 | with_legacy: true | |
155 | - name: mds_dir_max_commit_size | |
156 | type: int | |
157 | level: advanced | |
158 | desc: maximum size in megabytes for a RADOS write to a directory | |
159 | fmt_desc: The maximum size of a directory update before Ceph breaks it into | |
160 | smaller transactions (MB). | |
161 | default: 10 | |
162 | services: | |
163 | - mds | |
164 | with_legacy: true | |
165 | - name: mds_dir_keys_per_op | |
166 | type: int | |
167 | level: advanced | |
168 | desc: number of directory entries to read in one RADOS operation | |
169 | default: 16384 | |
170 | services: | |
171 | - mds | |
172 | with_legacy: true | |
173 | - name: mds_decay_halflife | |
174 | type: float | |
175 | level: advanced | |
176 | desc: rate of decay for temperature counters on each directory for balancing | |
177 | default: 5 | |
178 | services: | |
179 | - mds | |
180 | with_legacy: true | |
181 | - name: mds_beacon_interval | |
182 | type: float | |
183 | level: advanced | |
184 | desc: interval in seconds between MDS beacon messages sent to monitors | |
185 | default: 4 | |
186 | services: | |
187 | - mds | |
188 | with_legacy: true | |
189 | - name: mds_beacon_grace | |
190 | type: float | |
191 | level: advanced | |
192 | desc: tolerance in seconds for missed MDS beacons to monitors | |
193 | fmt_desc: The interval without beacons before Ceph declares an MDS laggy | |
194 | (and possibly replace it). | |
195 | default: 15 | |
196 | services: | |
197 | - mds | |
198 | with_legacy: true | |
33c7a0ef TL |
199 | - name: mds_heartbeat_reset_grace |
200 | type: uint | |
201 | level: advanced | |
202 | desc: the basic unit of tolerance in how many circles in a loop, which will | |
203 | keep running by holding the mds_lock, it must trigger to reset heartbeat | |
204 | default: 1000 | |
205 | services: | |
206 | - mds | |
20effc67 TL |
207 | - name: mds_heartbeat_grace |
208 | type: float | |
209 | level: advanced | |
210 | desc: tolerance in seconds for MDS internal heartbeat | |
211 | default: 15 | |
212 | services: | |
213 | - mds | |
214 | - name: mds_enforce_unique_name | |
215 | type: bool | |
216 | level: advanced | |
217 | desc: require MDS name is unique in the cluster | |
218 | default: true | |
219 | services: | |
220 | - mds | |
221 | with_legacy: true | |
222 | # whether to blocklist clients whose sessions are dropped due to timeout | |
223 | - name: mds_session_blocklist_on_timeout | |
224 | type: bool | |
225 | level: advanced | |
226 | desc: blocklist clients whose sessions have become stale | |
227 | default: true | |
228 | services: | |
229 | - mds | |
230 | with_legacy: true | |
231 | # whether to blocklist clients whose sessions are dropped via admin commands | |
232 | - name: mds_session_blocklist_on_evict | |
233 | type: bool | |
234 | level: advanced | |
235 | desc: blocklist clients that have been evicted | |
236 | default: true | |
237 | services: | |
238 | - mds | |
239 | with_legacy: true | |
240 | # how many sessions should I try to load/store in a single OMAP operation? | |
241 | - name: mds_sessionmap_keys_per_op | |
242 | type: uint | |
243 | level: advanced | |
244 | desc: number of omap keys to read from the SessionMap in one operation | |
245 | default: 1_K | |
246 | services: | |
247 | - mds | |
248 | with_legacy: true | |
249 | - name: mds_recall_max_caps | |
250 | type: size | |
251 | level: advanced | |
252 | desc: maximum number of caps to recall from client session in single recall | |
253 | default: 30000 | |
254 | services: | |
255 | - mds | |
256 | flags: | |
257 | - runtime | |
258 | - name: mds_recall_max_decay_rate | |
259 | type: float | |
260 | level: advanced | |
261 | desc: decay rate for throttle on recalled caps on a session | |
262 | default: 1.5 | |
263 | services: | |
264 | - mds | |
265 | flags: | |
266 | - runtime | |
267 | - name: mds_recall_max_decay_threshold | |
268 | type: size | |
269 | level: advanced | |
270 | desc: decay threshold for throttle on recalled caps on a session | |
271 | default: 128_K | |
272 | services: | |
273 | - mds | |
274 | flags: | |
275 | - runtime | |
276 | - name: mds_recall_global_max_decay_threshold | |
277 | type: size | |
278 | level: advanced | |
279 | desc: decay threshold for throttle on recalled caps globally | |
280 | default: 128_K | |
281 | services: | |
282 | - mds | |
283 | flags: | |
284 | - runtime | |
285 | - name: mds_recall_warning_threshold | |
286 | type: size | |
287 | level: advanced | |
288 | desc: decay threshold for warning on slow session cap recall | |
289 | default: 256_K | |
290 | services: | |
291 | - mds | |
292 | flags: | |
293 | - runtime | |
294 | - name: mds_recall_warning_decay_rate | |
295 | type: float | |
296 | level: advanced | |
297 | desc: decay rate for warning on slow session cap recall | |
298 | default: 60 | |
299 | services: | |
300 | - mds | |
301 | flags: | |
302 | - runtime | |
303 | - name: mds_session_cache_liveness_decay_rate | |
304 | type: float | |
305 | level: advanced | |
306 | desc: decay rate for session liveness leading to preemptive cap recall | |
307 | long_desc: This determines how long a session needs to be quiescent before the MDS | |
308 | begins preemptively recalling capabilities. The default of 5 minutes will cause | |
309 | 10 halvings of the decay counter after 1 hour, or 1/1024. The default magnitude | |
310 | of 10 (1^10 or 1024) is chosen so that the MDS considers a previously chatty session | |
311 | (approximately) to be quiescent after 1 hour. | |
312 | default: 5_min | |
313 | services: | |
314 | - mds | |
315 | see_also: | |
316 | - mds_session_cache_liveness_magnitude | |
317 | flags: | |
318 | - runtime | |
319 | - name: mds_session_cache_liveness_magnitude | |
320 | type: size | |
321 | level: advanced | |
322 | desc: decay magnitude for preemptively recalling caps on quiet client | |
323 | long_desc: This is the order of magnitude difference (in base 2) of the internal | |
324 | liveness decay counter and the number of capabilities the session holds. When | |
325 | this difference occurs, the MDS treats the session as quiescent and begins recalling | |
326 | capabilities. | |
327 | default: 10 | |
328 | services: | |
329 | - mds | |
330 | see_also: | |
331 | - mds_session_cache_liveness_decay_rate | |
332 | flags: | |
333 | - runtime | |
334 | - name: mds_session_cap_acquisition_decay_rate | |
335 | type: float | |
336 | level: advanced | |
337 | desc: decay rate for session readdir caps leading to readdir throttle | |
338 | long_desc: The half-life for the session cap acquisition counter of caps acquired | |
339 | by readdir. This is used for throttling readdir requests from clients slow to | |
340 | release caps. | |
341 | default: 10 | |
342 | services: | |
343 | - mds | |
344 | flags: | |
345 | - runtime | |
346 | - name: mds_session_cap_acquisition_throttle | |
347 | type: uint | |
348 | level: advanced | |
349 | desc: throttle point for cap acquisition decay counter | |
350 | default: 500000 | |
351 | services: | |
352 | - mds | |
353 | - name: mds_session_max_caps_throttle_ratio | |
354 | type: float | |
355 | level: advanced | |
356 | desc: ratio of mds_max_caps_per_client that client must exceed before readdir may | |
357 | be throttled by cap acquisition throttle | |
358 | default: 1.1 | |
359 | services: | |
360 | - mds | |
361 | - name: mds_cap_acquisition_throttle_retry_request_timeout | |
362 | type: float | |
363 | level: advanced | |
364 | desc: timeout in seconds after which a client request is retried due to cap acquisition | |
365 | throttling | |
366 | default: 0.5 | |
367 | services: | |
368 | - mds | |
369 | # detecting freeze tree deadlock | |
370 | - name: mds_freeze_tree_timeout | |
371 | type: float | |
372 | level: dev | |
373 | default: 30 | |
374 | services: | |
375 | - mds | |
376 | with_legacy: true | |
377 | # collapse N-client health metrics to a single 'many' | |
378 | - name: mds_health_summarize_threshold | |
379 | type: int | |
380 | level: advanced | |
381 | desc: threshold of number of clients to summarize late client recall | |
382 | default: 10 | |
383 | services: | |
384 | - mds | |
385 | with_legacy: true | |
386 | # seconds to wait for clients during mds restart | |
387 | # make it (mdsmap.session_timeout - mds_beacon_grace) | |
388 | - name: mds_reconnect_timeout | |
389 | type: float | |
390 | level: advanced | |
391 | desc: timeout in seconds to wait for clients to reconnect during MDS reconnect recovery | |
392 | state | |
393 | default: 45 | |
394 | services: | |
395 | - mds | |
396 | with_legacy: true | |
397 | - name: mds_deny_all_reconnect | |
398 | type: bool | |
399 | level: advanced | |
400 | desc: flag to deny all client reconnects during failover | |
401 | default: false | |
402 | services: | |
403 | - mds | |
404 | flags: | |
405 | - runtime | |
406 | - name: mds_tick_interval | |
407 | type: float | |
408 | level: advanced | |
409 | desc: time in seconds between upkeep tasks | |
410 | fmt_desc: How frequently the MDS performs internal periodic tasks. | |
411 | default: 5 | |
412 | services: | |
413 | - mds | |
414 | with_legacy: true | |
415 | # try to avoid propagating more often than this | |
416 | - name: mds_dirstat_min_interval | |
417 | type: float | |
418 | level: dev | |
419 | default: 1 | |
420 | services: | |
421 | - mds | |
422 | fmt_desc: The minimum interval (in seconds) to try to avoid propagating | |
423 | recursive stats up the tree. | |
424 | with_legacy: true | |
425 | # how quickly dirstat changes propagate up the hierarchy | |
426 | - name: mds_scatter_nudge_interval | |
427 | type: float | |
428 | level: advanced | |
429 | desc: minimum interval between scatter lock updates | |
430 | fmt_desc: How quickly dirstat changes propagate up. | |
431 | default: 5 | |
432 | services: | |
433 | - mds | |
434 | with_legacy: true | |
435 | - name: mds_client_prealloc_inos | |
436 | type: int | |
437 | level: advanced | |
438 | desc: number of unused inodes to pre-allocate to clients for file creation | |
439 | fmt_desc: The number of inode numbers to preallocate per client session. | |
440 | default: 1000 | |
441 | services: | |
442 | - mds | |
443 | with_legacy: true | |
444 | - name: mds_client_delegate_inos_pct | |
445 | type: uint | |
446 | level: advanced | |
447 | desc: percentage of preallocated inos to delegate to client | |
448 | default: 50 | |
449 | services: | |
450 | - mds | |
451 | flags: | |
452 | - runtime | |
453 | - name: mds_early_reply | |
454 | type: bool | |
455 | level: advanced | |
456 | desc: additional reply to clients that metadata requests are complete but not yet | |
457 | durable | |
458 | fmt_desc: Determines whether the MDS should allow clients to see request | |
459 | results before they commit to the journal. | |
460 | default: true | |
461 | services: | |
462 | - mds | |
463 | with_legacy: true | |
464 | - name: mds_replay_unsafe_with_closed_session | |
465 | type: bool | |
466 | level: advanced | |
467 | desc: complete all the replay request when mds is restarted, no matter the session | |
468 | is closed or not | |
469 | default: false | |
470 | services: | |
471 | - mds | |
472 | flags: | |
473 | - startup | |
474 | - name: mds_default_dir_hash | |
475 | type: int | |
476 | level: advanced | |
477 | desc: hash function to select directory fragment for dentry name | |
478 | fmt_desc: The function to use for hashing files across directory fragments. | |
479 | # CEPH_STR_HASH_RJENKINS | |
480 | default: 2 | |
481 | services: | |
482 | - mds | |
483 | with_legacy: true | |
484 | - name: mds_log_pause | |
485 | type: bool | |
486 | level: dev | |
487 | default: false | |
488 | services: | |
489 | - mds | |
490 | with_legacy: true | |
491 | - name: mds_log_skip_corrupt_events | |
492 | type: bool | |
493 | level: dev | |
494 | default: false | |
495 | services: | |
496 | - mds | |
497 | fmt_desc: Determines whether the MDS should try to skip corrupt journal | |
498 | events during journal replay. | |
499 | with_legacy: true | |
500 | - name: mds_log_max_events | |
501 | type: int | |
502 | level: advanced | |
503 | desc: maximum number of events in the MDS journal (-1 is unlimited) | |
504 | fmt_desc: The maximum events in the journal before we initiate trimming. | |
505 | Set to ``-1`` to disable limits. | |
506 | default: -1 | |
507 | services: | |
508 | - mds | |
509 | with_legacy: true | |
510 | - name: mds_log_events_per_segment | |
511 | type: int | |
512 | level: advanced | |
513 | desc: maximum number of events in an MDS journal segment | |
514 | default: 1024 | |
515 | services: | |
516 | - mds | |
517 | with_legacy: true | |
518 | # segment size for mds log, default to default file_layout_t | |
519 | - name: mds_log_segment_size | |
520 | type: size | |
521 | level: advanced | |
522 | desc: size in bytes of each MDS log segment | |
523 | default: 0 | |
524 | services: | |
525 | - mds | |
526 | with_legacy: true | |
527 | - name: mds_log_max_segments | |
528 | type: uint | |
529 | level: advanced | |
530 | desc: maximum number of segments which may be untrimmed | |
531 | fmt_desc: The maximum number of segments (objects) in the journal before | |
532 | we initiate trimming. Set to ``-1`` to disable limits. | |
533 | default: 128 | |
534 | services: | |
535 | - mds | |
536 | with_legacy: true | |
537 | - name: mds_log_warn_factor | |
538 | type: float | |
539 | level: advanced | |
540 | desc: trigger MDS_HEALTH_TRIM warning when the mds log is longer than mds_log_max_segments | |
541 | * mds_log_warn_factor | |
542 | default: 2 | |
543 | services: | |
544 | - mds | |
545 | min: 1 | |
546 | flags: | |
547 | - runtime | |
548 | - name: mds_bal_export_pin | |
549 | type: bool | |
550 | level: advanced | |
551 | desc: allow setting directory export pins to particular ranks | |
552 | default: true | |
553 | services: | |
554 | - mds | |
555 | with_legacy: true | |
556 | - name: mds_export_ephemeral_random | |
557 | type: bool | |
558 | level: advanced | |
559 | desc: allow ephemeral random pinning of the loaded subtrees | |
560 | long_desc: probabilistically pin the loaded directory inode and the subtree beneath | |
561 | it to an MDS based on the consistent hash of the inode number. The higher this | |
562 | value the more likely the loaded subtrees get pinned | |
563 | default: true | |
564 | services: | |
565 | - mds | |
566 | flags: | |
567 | - runtime | |
568 | - name: mds_export_ephemeral_random_max | |
569 | type: float | |
570 | level: advanced | |
571 | desc: the maximum percent permitted for random ephemeral pin policy | |
572 | default: 0.01 | |
573 | services: | |
574 | - mds | |
575 | see_also: | |
576 | - mds_export_ephemeral_random | |
577 | min: 0 | |
578 | max: 1 | |
579 | flags: | |
580 | - runtime | |
581 | - name: mds_export_ephemeral_distributed | |
582 | type: bool | |
583 | level: advanced | |
584 | desc: allow ephemeral distributed pinning of the loaded subtrees | |
585 | long_desc: 'pin the immediate child directories of the loaded directory inode based | |
586 | on the consistent hash of the child''s inode number. ' | |
587 | default: true | |
588 | services: | |
589 | - mds | |
590 | flags: | |
591 | - runtime | |
592 | - name: mds_export_ephemeral_distributed_factor | |
593 | type: float | |
594 | level: advanced | |
595 | desc: multiple of max_mds for splitting and distributing directory | |
596 | default: 2 | |
597 | services: | |
598 | - mds | |
599 | min: 1 | |
600 | max: 100 | |
601 | flags: | |
602 | - runtime | |
603 | - name: mds_bal_sample_interval | |
604 | type: float | |
605 | level: advanced | |
606 | desc: interval in seconds between balancer ticks | |
607 | fmt_desc: Determines how frequently to sample directory temperature | |
608 | (for fragmentation decisions). | |
609 | default: 3 | |
610 | services: | |
611 | - mds | |
612 | with_legacy: true | |
613 | - name: mds_bal_replicate_threshold | |
614 | type: float | |
615 | level: advanced | |
616 | desc: hot popularity threshold to replicate a subtree | |
617 | fmt_desc: The maximum temperature before Ceph attempts to replicate | |
618 | metadata to other nodes. | |
619 | default: 8000 | |
620 | services: | |
621 | - mds | |
622 | with_legacy: true | |
623 | - name: mds_bal_unreplicate_threshold | |
624 | type: float | |
625 | level: advanced | |
626 | desc: cold popularity threshold to merge subtrees | |
627 | fmt_desc: The minimum temperature before Ceph stops replicating | |
628 | metadata to other nodes. | |
629 | default: 0 | |
630 | services: | |
631 | - mds | |
632 | with_legacy: true | |
633 | - name: mds_bal_split_size | |
634 | type: int | |
635 | level: advanced | |
636 | desc: minimum size of directory fragment before splitting | |
637 | fmt_desc: The maximum directory size before the MDS will split a directory | |
638 | fragment into smaller bits. | |
639 | default: 10000 | |
640 | services: | |
641 | - mds | |
642 | with_legacy: true | |
643 | - name: mds_bal_split_rd | |
644 | type: float | |
645 | level: advanced | |
646 | desc: hot read popularity threshold for splitting a directory fragment | |
647 | fmt_desc: The maximum directory read temperature before Ceph splits | |
648 | a directory fragment. | |
649 | default: 25000 | |
650 | services: | |
651 | - mds | |
652 | with_legacy: true | |
653 | - name: mds_bal_split_wr | |
654 | type: float | |
655 | level: advanced | |
656 | desc: hot write popularity threshold for splitting a directory fragment | |
657 | fmt_desc: The maximum directory write temperature before Ceph splits | |
658 | a directory fragment. | |
659 | default: 10000 | |
660 | services: | |
661 | - mds | |
662 | with_legacy: true | |
663 | - name: mds_bal_split_bits | |
664 | type: int | |
665 | level: advanced | |
666 | desc: power of two child fragments for a fragment on split | |
667 | fmt_desc: The number of bits by which to split a directory fragment. | |
668 | default: 3 | |
669 | services: | |
670 | - mds | |
671 | min: 1 | |
672 | max: 24 | |
673 | with_legacy: true | |
674 | - name: mds_bal_merge_size | |
675 | type: int | |
676 | level: advanced | |
677 | desc: size of fragments where merging should occur | |
678 | fmt_desc: The minimum directory size before Ceph tries to merge | |
679 | adjacent directory fragments. | |
680 | default: 50 | |
681 | services: | |
682 | - mds | |
683 | with_legacy: true | |
684 | - name: mds_bal_interval | |
685 | type: int | |
686 | level: advanced | |
687 | desc: interval between MDS balancer cycles | |
688 | fmt_desc: The frequency (in seconds) of workload exchanges between MDSs. | |
689 | default: 10 | |
690 | services: | |
691 | - mds | |
692 | - name: mds_bal_fragment_interval | |
693 | type: int | |
694 | level: advanced | |
695 | desc: delay in seconds before interrupting client IO to perform splits | |
696 | fmt_desc: The delay (in seconds) between a fragment being eligible for split | |
697 | or merge and executing the fragmentation change. | |
698 | default: 5 | |
699 | services: | |
700 | - mds | |
701 | # order of magnitude higher than split size | |
702 | - name: mds_bal_fragment_size_max | |
703 | type: int | |
704 | level: advanced | |
705 | desc: maximum size of a directory fragment before new creat/links fail | |
706 | fmt_desc: The maximum size of a fragment before any new entries | |
707 | are rejected with ENOSPC. | |
708 | default: 100000 | |
709 | services: | |
710 | - mds | |
711 | with_legacy: true | |
712 | # multiple of size_max that triggers immediate split | |
713 | - name: mds_bal_fragment_fast_factor | |
714 | type: float | |
715 | level: advanced | |
716 | desc: ratio of mds_bal_split_size at which fast fragment splitting occurs | |
717 | fmt_desc: The ratio by which frags may exceed the split size before | |
718 | a split is executed immediately (skipping the fragment interval) | |
719 | default: 1.5 | |
720 | services: | |
721 | - mds | |
722 | with_legacy: true | |
723 | - name: mds_bal_fragment_dirs | |
724 | type: bool | |
725 | level: advanced | |
726 | desc: enable directory fragmentation | |
727 | long_desc: Directory fragmentation is a standard feature of CephFS that allows sharding | |
728 | directories across multiple objects for performance and stability. Additionally, | |
729 | this allows fragments to be distributed across multiple active MDSs to increase | |
730 | throughput. Disabling (new) fragmentation should only be done in exceptional circumstances | |
731 | and may lead to performance issues. | |
732 | default: true | |
733 | services: | |
734 | - mds | |
735 | - name: mds_bal_idle_threshold | |
736 | type: float | |
737 | level: advanced | |
738 | desc: idle metadata popularity threshold before rebalancing | |
739 | fmt_desc: The minimum temperature before Ceph migrates a subtree | |
740 | back to its parent. | |
741 | default: 0 | |
742 | services: | |
743 | - mds | |
744 | with_legacy: true | |
745 | - name: mds_bal_max | |
746 | type: int | |
747 | level: dev | |
748 | default: -1 | |
749 | services: | |
750 | - mds | |
751 | fmt_desc: The number of iterations to run balancer before Ceph stops. | |
752 | (used for testing purposes only) | |
753 | with_legacy: true | |
754 | - name: mds_bal_max_until | |
755 | type: int | |
756 | level: dev | |
757 | default: -1 | |
758 | services: | |
759 | - mds | |
760 | fmt_desc: The number of seconds to run balancer before Ceph stops. | |
761 | (used for testing purposes only) | |
762 | with_legacy: true | |
763 | - name: mds_bal_mode | |
764 | type: int | |
765 | level: dev | |
766 | default: 0 | |
767 | services: | |
768 | - mds | |
769 | fmt_desc: | | |
770 | The method for calculating MDS load. | |
771 | ||
772 | - ``0`` = Hybrid. | |
773 | - ``1`` = Request rate and latency. | |
774 | - ``2`` = CPU load. | |
775 | with_legacy: true | |
776 | # must be this much above average before we export anything | |
777 | - name: mds_bal_min_rebalance | |
778 | type: float | |
779 | level: dev | |
780 | desc: amount overloaded over internal target before balancer begins offloading | |
781 | fmt_desc: The minimum subtree temperature before Ceph migrates. | |
782 | default: 0.1 | |
783 | services: | |
784 | - mds | |
785 | with_legacy: true | |
786 | # if we need less than this, we don't do anything | |
787 | - name: mds_bal_min_start | |
788 | type: float | |
789 | level: dev | |
790 | default: 0.2 | |
791 | services: | |
792 | - mds | |
793 | fmt_desc: The minimum subtree temperature before Ceph searches a subtree. | |
794 | with_legacy: true | |
795 | # take within this range of what we need | |
796 | - name: mds_bal_need_min | |
797 | type: float | |
798 | level: dev | |
799 | default: 0.8 | |
800 | services: | |
801 | - mds | |
802 | fmt_desc: The minimum fraction of target subtree size to accept. | |
803 | with_legacy: true | |
804 | - name: mds_bal_need_max | |
805 | type: float | |
806 | level: dev | |
807 | default: 1.2 | |
808 | services: | |
809 | - mds | |
810 | fmt_desc: The maximum fraction of target subtree size to accept. | |
811 | with_legacy: true | |
812 | # any sub bigger than this taken in full | |
813 | - name: mds_bal_midchunk | |
814 | type: float | |
815 | level: dev | |
816 | default: 0.3 | |
817 | services: | |
818 | - mds | |
819 | fmt_desc: Ceph will migrate any subtree that is larger than this fraction | |
820 | of the target subtree size. | |
821 | with_legacy: true | |
822 | # never take anything smaller than this | |
823 | - name: mds_bal_minchunk | |
824 | type: float | |
825 | level: dev | |
826 | default: 0.001 | |
827 | services: | |
828 | - mds | |
829 | fmt_desc: Ceph will ignore any subtree that is smaller than this fraction | |
830 | of the target subtree size. | |
831 | with_legacy: true | |
832 | # target decay half-life in MDSMap (2x larger is approx. 2x slower) | |
833 | - name: mds_bal_target_decay | |
834 | type: float | |
835 | level: advanced | |
836 | desc: rate of decay for export targets communicated to clients | |
837 | default: 10 | |
838 | services: | |
839 | - mds | |
840 | with_legacy: true | |
841 | - name: mds_oft_prefetch_dirfrags | |
842 | type: bool | |
843 | level: advanced | |
844 | desc: prefetch dirfrags recorded in open file table on startup | |
1d09f67e | 845 | default: false |
20effc67 TL |
846 | services: |
847 | - mds | |
848 | flags: | |
849 | - startup | |
850 | # time to wait before starting replay again | |
851 | - name: mds_replay_interval | |
852 | type: float | |
853 | level: advanced | |
854 | desc: time in seconds between replay of updates to journal by standby replay MDS | |
855 | fmt_desc: The journal poll interval when in standby-replay mode. | |
856 | ("hot standby") | |
857 | default: 1 | |
858 | services: | |
859 | - mds | |
860 | with_legacy: true | |
861 | - name: mds_shutdown_check | |
862 | type: int | |
863 | level: dev | |
864 | default: 0 | |
865 | services: | |
866 | - mds | |
867 | fmt_desc: The interval for polling the cache during MDS shutdown. | |
868 | with_legacy: true | |
869 | - name: mds_thrash_exports | |
870 | type: int | |
871 | level: dev | |
872 | default: 0 | |
873 | services: | |
874 | - mds | |
875 | fmt_desc: Ceph will randomly export subtrees between nodes (testing only). | |
876 | with_legacy: true | |
877 | - name: mds_thrash_fragments | |
878 | type: int | |
879 | level: dev | |
880 | default: 0 | |
881 | services: | |
882 | - mds | |
883 | fmt_desc: Ceph will randomly fragment or merge directories. | |
884 | with_legacy: true | |
885 | - name: mds_dump_cache_on_map | |
886 | type: bool | |
887 | level: dev | |
888 | default: false | |
889 | services: | |
890 | - mds | |
891 | fmt_desc: Ceph will dump the MDS cache contents to a file on each MDSMap. | |
892 | with_legacy: true | |
893 | - name: mds_dump_cache_after_rejoin | |
894 | type: bool | |
895 | level: dev | |
896 | default: false | |
897 | services: | |
898 | - mds | |
899 | fmt_desc: Ceph will dump MDS cache contents to a file after | |
900 | rejoining the cache (during recovery). | |
901 | with_legacy: true | |
902 | - name: mds_verify_scatter | |
903 | type: bool | |
904 | level: dev | |
905 | default: false | |
906 | services: | |
907 | - mds | |
908 | fmt_desc: Ceph will assert that various scatter/gather invariants | |
909 | are ``true`` (developers only). | |
910 | with_legacy: true | |
911 | - name: mds_debug_scatterstat | |
912 | type: bool | |
913 | level: dev | |
914 | default: false | |
915 | services: | |
916 | - mds | |
917 | fmt_desc: Ceph will assert that various recursive stat invariants | |
918 | are ``true`` (for developers only). | |
919 | with_legacy: true | |
920 | - name: mds_debug_frag | |
921 | type: bool | |
922 | level: dev | |
923 | default: false | |
924 | services: | |
925 | - mds | |
926 | fmt_desc: Ceph will verify directory fragmentation invariants | |
927 | when convenient (developers only). | |
928 | with_legacy: true | |
929 | - name: mds_debug_auth_pins | |
930 | type: bool | |
931 | level: dev | |
932 | default: false | |
933 | services: | |
934 | - mds | |
935 | fmt_desc: The debug auth pin invariants (for developers only). | |
936 | with_legacy: true | |
937 | - name: mds_debug_subtrees | |
938 | type: bool | |
939 | level: dev | |
940 | default: false | |
941 | services: | |
942 | - mds | |
943 | fmt_desc: The debug subtree invariants (for developers only). | |
944 | with_legacy: true | |
945 | - name: mds_kill_mdstable_at | |
946 | type: int | |
947 | level: dev | |
948 | default: 0 | |
949 | services: | |
950 | - mds | |
951 | fmt_desc: Ceph will inject MDS failure in MDSTable code | |
952 | (for developers only). | |
953 | with_legacy: true | |
954 | - name: mds_max_export_size | |
955 | type: size | |
956 | level: dev | |
957 | default: 20_M | |
958 | services: | |
959 | - mds | |
960 | - name: mds_kill_export_at | |
961 | type: int | |
962 | level: dev | |
963 | default: 0 | |
964 | services: | |
965 | - mds | |
966 | fmt_desc: Ceph will inject MDS failure in the subtree export code | |
967 | (for developers only). | |
968 | with_legacy: true | |
969 | - name: mds_kill_import_at | |
970 | type: int | |
971 | level: dev | |
972 | default: 0 | |
973 | services: | |
974 | - mds | |
975 | fmt_desc: Ceph will inject MDS failure in the subtree import code | |
976 | (for developers only). | |
977 | with_legacy: true | |
978 | - name: mds_kill_link_at | |
979 | type: int | |
980 | level: dev | |
981 | default: 0 | |
982 | services: | |
983 | - mds | |
984 | fmt_desc: Ceph will inject MDS failure in hard link code | |
985 | (for developers only). | |
986 | with_legacy: true | |
987 | - name: mds_kill_rename_at | |
988 | type: int | |
989 | level: dev | |
990 | default: 0 | |
991 | services: | |
992 | - mds | |
993 | fmt_desc: Ceph will inject MDS failure in the rename code | |
994 | (for developers only). | |
995 | with_legacy: true | |
996 | - name: mds_kill_openc_at | |
997 | type: int | |
998 | level: dev | |
999 | default: 0 | |
1000 | services: | |
1001 | - mds | |
1002 | with_legacy: true | |
1003 | # XXX | |
1004 | - name: mds_kill_journal_at | |
1005 | type: int | |
1006 | level: dev | |
1007 | default: 0 | |
1008 | services: | |
1009 | - mds | |
1010 | - name: mds_kill_journal_expire_at | |
1011 | type: int | |
1012 | level: dev | |
1013 | default: 0 | |
1014 | services: | |
1015 | - mds | |
1016 | with_legacy: true | |
1017 | - name: mds_kill_journal_replay_at | |
1018 | type: int | |
1019 | level: dev | |
1020 | default: 0 | |
1021 | services: | |
1022 | - mds | |
1023 | with_legacy: true | |
1024 | - name: mds_journal_format | |
1025 | type: uint | |
1026 | level: dev | |
1027 | default: 1 | |
1028 | services: | |
1029 | - mds | |
1030 | with_legacy: true | |
1031 | - name: mds_kill_create_at | |
1032 | type: int | |
1033 | level: dev | |
1034 | default: 0 | |
1035 | services: | |
1036 | - mds | |
1037 | with_legacy: true | |
1038 | # percentage of MDS modify replies to skip sending the client a trace on [0-1] | |
1039 | - name: mds_inject_traceless_reply_probability | |
1040 | type: float | |
1041 | level: dev | |
1042 | default: 0 | |
1043 | services: | |
1044 | - mds | |
1045 | with_legacy: true | |
1046 | - name: mds_wipe_sessions | |
1047 | type: bool | |
1048 | level: dev | |
1049 | default: false | |
1050 | services: | |
1051 | - mds | |
1052 | fmt_desc: Ceph will delete all client sessions on startup | |
1053 | (for testing only). | |
1054 | with_legacy: true | |
1055 | - name: mds_wipe_ino_prealloc | |
1056 | type: bool | |
1057 | level: dev | |
1058 | default: false | |
1059 | services: | |
1060 | - mds | |
1061 | fmt_desc: Ceph will delete ino preallocation metadata on startup | |
1062 | (for testing only). | |
1063 | with_legacy: true | |
1064 | - name: mds_skip_ino | |
1065 | type: int | |
1066 | level: dev | |
1067 | default: 0 | |
1068 | services: | |
1069 | - mds | |
1070 | fmt_desc: The number of inode numbers to skip on startup | |
1071 | (for testing only). | |
1072 | with_legacy: true | |
1073 | - name: mds_enable_op_tracker | |
1074 | type: bool | |
1075 | level: advanced | |
1076 | desc: track remote operation progression and statistics | |
1077 | default: true | |
1078 | services: | |
1079 | - mds | |
1080 | with_legacy: true | |
1081 | # Max number of completed ops to track | |
1082 | - name: mds_op_history_size | |
1083 | type: uint | |
1084 | level: advanced | |
1085 | desc: maximum size for list of historical operations | |
1086 | default: 20 | |
1087 | services: | |
1088 | - mds | |
1089 | with_legacy: true | |
1090 | # Oldest completed op to track | |
1091 | - name: mds_op_history_duration | |
1092 | type: uint | |
1093 | level: advanced | |
1094 | desc: expiration time in seconds of historical operations | |
1095 | default: 600 | |
1096 | services: | |
1097 | - mds | |
1098 | with_legacy: true | |
1099 | # how many seconds old makes an op complaint-worthy | |
1100 | - name: mds_op_complaint_time | |
1101 | type: float | |
1102 | level: advanced | |
1103 | desc: time in seconds to consider an operation blocked after no updates | |
1104 | default: 30 | |
1105 | services: | |
1106 | - mds | |
1107 | with_legacy: true | |
1108 | # how many op log messages to show in one go | |
1109 | - name: mds_op_log_threshold | |
1110 | type: int | |
1111 | level: dev | |
1112 | default: 5 | |
1113 | services: | |
1114 | - mds | |
1115 | with_legacy: true | |
1116 | - name: mds_snap_min_uid | |
1117 | type: uint | |
1118 | level: advanced | |
1119 | desc: minimum uid of client to perform snapshots | |
1120 | default: 0 | |
1121 | services: | |
1122 | - mds | |
1123 | with_legacy: true | |
1124 | - name: mds_snap_max_uid | |
1125 | type: uint | |
1126 | level: advanced | |
1127 | desc: maximum uid of client to perform snapshots | |
1128 | default: 4294967294 | |
1129 | services: | |
1130 | - mds | |
1131 | with_legacy: true | |
1132 | - name: mds_snap_rstat | |
1133 | type: bool | |
1134 | level: advanced | |
1135 | desc: enabled nested rstat for snapshots | |
1136 | default: false | |
1137 | services: | |
1138 | - mds | |
1139 | with_legacy: true | |
1140 | - name: mds_verify_backtrace | |
1141 | type: uint | |
1142 | level: dev | |
1143 | default: 1 | |
1144 | services: | |
1145 | - mds | |
1146 | with_legacy: true | |
1147 | # detect clients which aren't trimming completed requests | |
1148 | - name: mds_max_completed_flushes | |
1149 | type: uint | |
1150 | level: dev | |
1151 | default: 100000 | |
1152 | services: | |
1153 | - mds | |
1154 | with_legacy: true | |
1155 | - name: mds_max_completed_requests | |
1156 | type: uint | |
1157 | level: dev | |
1158 | default: 100000 | |
1159 | services: | |
1160 | - mds | |
1161 | with_legacy: true | |
1162 | - name: mds_action_on_write_error | |
1163 | type: uint | |
1164 | level: advanced | |
1165 | desc: action to take when MDS cannot write to RADOS (0:ignore, 1:read-only, 2:suicide) | |
1166 | default: 1 | |
1167 | services: | |
1168 | - mds | |
1169 | with_legacy: true | |
1170 | - name: mds_mon_shutdown_timeout | |
1171 | type: float | |
1172 | level: advanced | |
1173 | desc: time to wait for mon to receive damaged MDS rank notification | |
1174 | default: 5 | |
1175 | services: | |
1176 | - mds | |
1177 | with_legacy: true | |
1178 | # Maximum number of concurrent stray files to purge | |
1179 | - name: mds_max_purge_files | |
1180 | type: uint | |
1181 | level: advanced | |
1182 | desc: maximum number of deleted files to purge in parallel | |
1183 | default: 64 | |
1184 | services: | |
1185 | - mds | |
1186 | with_legacy: true | |
1187 | # Maximum number of concurrent RADOS ops to issue in purging | |
1188 | - name: mds_max_purge_ops | |
1189 | type: uint | |
1190 | level: advanced | |
1191 | desc: maximum number of purge operations performed in parallel | |
1192 | default: 8_K | |
1193 | services: | |
1194 | - mds | |
1195 | with_legacy: true | |
1196 | # Maximum number of concurrent RADOS ops to issue in purging, scaled by PG count | |
1197 | - name: mds_max_purge_ops_per_pg | |
1198 | type: float | |
1199 | level: advanced | |
1200 | desc: number of parallel purge operations performed per PG | |
1201 | default: 0.5 | |
1202 | services: | |
1203 | - mds | |
1204 | with_legacy: true | |
1205 | - name: mds_purge_queue_busy_flush_period | |
1206 | type: float | |
1207 | level: dev | |
1208 | default: 1 | |
1209 | services: | |
1210 | - mds | |
1211 | with_legacy: true | |
1212 | - name: mds_root_ino_uid | |
1213 | type: int | |
1214 | level: advanced | |
1215 | desc: default uid for new root directory | |
1216 | default: 0 | |
1217 | services: | |
1218 | - mds | |
1219 | with_legacy: true | |
1220 | - name: mds_root_ino_gid | |
1221 | type: int | |
1222 | level: advanced | |
1223 | desc: default gid for new root directory | |
1224 | default: 0 | |
1225 | services: | |
1226 | - mds | |
1227 | with_legacy: true | |
1228 | - name: mds_max_scrub_ops_in_progress | |
1229 | type: int | |
1230 | level: advanced | |
1231 | desc: maximum number of scrub operations performed in parallel | |
1232 | default: 5 | |
1233 | services: | |
1234 | - mds | |
1235 | with_legacy: true | |
1236 | - name: mds_forward_all_requests_to_auth | |
1237 | type: bool | |
1238 | level: advanced | |
1239 | desc: always process op on auth mds | |
1240 | default: false | |
1241 | services: | |
1242 | - mds | |
1243 | flags: | |
1244 | - runtime | |
1245 | # Maximum number of damaged frags/dentries before whole MDS rank goes damaged | |
1246 | - name: mds_damage_table_max_entries | |
1247 | type: int | |
1248 | level: advanced | |
1249 | desc: maximum number of damage table entries | |
1250 | default: 10000 | |
1251 | services: | |
1252 | - mds | |
1253 | with_legacy: true | |
1254 | # Maximum increment for client writable range, counted by number of objects | |
1255 | - name: mds_client_writeable_range_max_inc_objs | |
1256 | type: uint | |
1257 | level: advanced | |
1258 | desc: maximum number of objects in writeable range of a file for a client | |
1259 | default: 1_K | |
1260 | services: | |
1261 | - mds | |
1262 | with_legacy: true | |
1263 | - name: mds_min_caps_per_client | |
1264 | type: uint | |
1265 | level: advanced | |
1266 | desc: minimum number of capabilities a client may hold | |
1267 | default: 100 | |
1268 | services: | |
1269 | - mds | |
1270 | - name: mds_min_caps_working_set | |
1271 | type: uint | |
1272 | level: advanced | |
1273 | desc: number of capabilities a client may hold without cache pressure warnings generated | |
1274 | default: 10000 | |
1275 | services: | |
1276 | - mds | |
1277 | flags: | |
1278 | - runtime | |
1279 | - name: mds_max_caps_per_client | |
1280 | type: uint | |
1281 | level: advanced | |
1282 | desc: maximum number of capabilities a client may hold | |
1283 | default: 1_M | |
1284 | services: | |
1285 | - mds | |
1286 | - name: mds_hack_allow_loading_invalid_metadata | |
1287 | type: bool | |
1288 | level: advanced | |
1289 | desc: INTENTIONALLY CAUSE DATA LOSS by bypasing checks for invalid metadata on disk. | |
1290 | Allows testing repair tools. | |
1291 | default: false | |
1292 | services: | |
1293 | - mds | |
1294 | - name: mds_defer_session_stale | |
1295 | type: bool | |
1296 | level: dev | |
1297 | default: true | |
1298 | services: | |
1299 | - mds | |
1300 | - name: mds_inject_migrator_session_race | |
1301 | type: bool | |
1302 | level: dev | |
1303 | default: false | |
1304 | services: | |
1305 | - mds | |
1306 | - name: mds_request_load_average_decay_rate | |
1307 | type: float | |
1308 | level: advanced | |
1309 | desc: rate of decay in seconds for calculating request load average | |
1310 | default: 1_min | |
1311 | services: | |
1312 | - mds | |
1313 | - name: mds_cap_revoke_eviction_timeout | |
1314 | type: float | |
1315 | level: advanced | |
1316 | desc: number of seconds after which clients which have not responded to cap revoke | |
1317 | messages by the MDS are evicted. | |
1318 | default: 0 | |
1319 | services: | |
1320 | - mds | |
1321 | - name: mds_max_retries_on_remount_failure | |
1322 | type: uint | |
1323 | level: advanced | |
1324 | desc: number of consecutive failed remount attempts for invalidating kernel dcache | |
1325 | after which client would abort. | |
1326 | default: 5 | |
1327 | services: | |
1328 | - mds | |
1329 | - name: mds_dump_cache_threshold_formatter | |
1330 | type: size | |
1331 | level: dev | |
1332 | desc: threshold for cache usage to disallow "dump cache" operation to formatter | |
1333 | long_desc: Disallow MDS from dumping caches to formatter via "dump cache" command | |
1334 | if cache usage exceeds this threshold. | |
1335 | default: 1_G | |
1336 | services: | |
1337 | - mds | |
1338 | - name: mds_dump_cache_threshold_file | |
1339 | type: size | |
1340 | level: dev | |
1341 | desc: threshold for cache usage to disallow "dump cache" operation to file | |
1342 | long_desc: Disallow MDS from dumping caches to file via "dump cache" command if | |
1343 | cache usage exceeds this threshold. | |
1344 | default: 0 | |
1345 | services: | |
1346 | - mds | |
1347 | - name: mds_task_status_update_interval | |
1348 | type: float | |
1349 | level: dev | |
1350 | desc: task status update interval to manager | |
1351 | long_desc: interval (in seconds) for sending mds task status to ceph manager | |
1352 | default: 2 | |
1353 | services: | |
1354 | - mds | |
1355 | - name: mds_max_snaps_per_dir | |
1356 | type: uint | |
1357 | level: advanced | |
1358 | desc: max snapshots per directory | |
1359 | long_desc: maximum number of snapshots that can be created per directory | |
1360 | default: 100 | |
1361 | services: | |
1362 | - mds | |
1363 | min: 0 | |
1364 | max: 4_K | |
1365 | flags: | |
1366 | - runtime | |
1367 | - name: mds_asio_thread_count | |
1368 | type: uint | |
1369 | level: advanced | |
1370 | desc: Size of thread pool for ASIO completions | |
1371 | default: 2 | |
1372 | tags: | |
1373 | - mds | |
1374 | services: | |
1375 | - mds | |
1376 | min: 1 | |
1377 | - name: mds_ping_grace | |
1378 | type: secs | |
1379 | level: advanced | |
1380 | desc: timeout after which an MDS is considered laggy by rank 0 MDS. | |
1381 | long_desc: timeout for replying to a ping message sent by rank 0 after which an | |
1382 | active MDS considered laggy (delayed metrics) by rank 0. | |
1383 | default: 15 | |
1384 | services: | |
1385 | - mds | |
1386 | flags: | |
1387 | - runtime | |
1388 | - name: mds_ping_interval | |
1389 | type: secs | |
1390 | level: advanced | |
1391 | desc: interval in seconds for sending ping messages to active MDSs. | |
1392 | long_desc: interval in seconds for rank 0 to send ping messages to all active MDSs. | |
1393 | default: 5 | |
1394 | services: | |
1395 | - mds | |
1396 | flags: | |
1397 | - runtime | |
1398 | - name: mds_metrics_update_interval | |
1399 | type: secs | |
1400 | level: advanced | |
1401 | desc: interval in seconds for metrics data update. | |
1402 | long_desc: interval in seconds after which active MDSs send client metrics data | |
1403 | to rank 0. | |
1404 | default: 2 | |
1405 | services: | |
1406 | - mds | |
1407 | flags: | |
1408 | - runtime | |
1409 | - name: mds_dir_max_entries | |
1410 | type: uint | |
1411 | level: advanced | |
1412 | desc: maximum number of entries per directory before new creat/links fail | |
1413 | long_desc: The maximum number of entries before any new entries | |
1414 | are rejected with ENOSPC. | |
1415 | default: 0 | |
1416 | services: | |
1417 | - mds | |
1418 | flags: | |
1419 | - runtime | |
1420 | - name: mds_sleep_rank_change | |
1421 | type: float | |
1422 | level: dev | |
1423 | default: 0.0 | |
1424 | flags: | |
1425 | - runtime | |
1426 | - name: mds_connect_bootstrapping | |
1427 | type: bool | |
1428 | level: dev | |
1429 | default: false | |
1430 | flags: | |
1431 | - runtime | |
1432 | - name: mds_symlink_recovery | |
1433 | type: bool | |
1434 | level: advanced | |
1435 | desc: Stores symlink target on the first data object of symlink file. | |
1436 | Allows recover of symlink using recovery tools. | |
1437 | default: true | |
1438 | services: | |
1439 | - mds | |
1440 | flags: | |
1441 | - runtime |