2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License v.2.
10 #include <linux/sched.h>
11 #include <linux/slab.h>
12 #include <linux/spinlock.h>
13 #include <linux/completion.h>
14 #include <linux/buffer_head.h>
15 #include <linux/module.h>
16 #include <linux/kobject.h>
17 #include <asm/semaphore.h>
18 #include <asm/uaccess.h>
28 spinlock_t gfs2_sys_margs_lock
;
30 static ssize_t
id_show(struct gfs2_sbd
*sdp
, char *buf
)
32 return sprintf(buf
, "%s\n", sdp
->sd_vfs
->s_id
);
35 static ssize_t
fsname_show(struct gfs2_sbd
*sdp
, char *buf
)
37 return sprintf(buf
, "%s\n", sdp
->sd_fsname
);
40 static ssize_t
freeze_show(struct gfs2_sbd
*sdp
, char *buf
)
44 down(&sdp
->sd_freeze_lock
);
45 count
= sdp
->sd_freeze_count
;
46 up(&sdp
->sd_freeze_lock
);
48 return sprintf(buf
, "%u\n", count
);
51 static ssize_t
freeze_store(struct gfs2_sbd
*sdp
, const char *buf
, size_t len
)
55 int n
= simple_strtol(buf
, NULL
, 0);
57 if (!capable(CAP_SYS_ADMIN
))
62 gfs2_unfreeze_fs(sdp
);
65 error
= gfs2_freeze_fs(sdp
);
72 fs_warn(sdp
, "freeze %d error %d", n
, error
);
77 static ssize_t
withdraw_show(struct gfs2_sbd
*sdp
, char *buf
)
79 unsigned int b
= test_bit(SDF_SHUTDOWN
, &sdp
->sd_flags
);
80 return sprintf(buf
, "%u\n", b
);
83 static ssize_t
withdraw_store(struct gfs2_sbd
*sdp
, const char *buf
, size_t len
)
85 if (!capable(CAP_SYS_ADMIN
))
88 if (simple_strtol(buf
, NULL
, 0) != 1)
92 "GFS2: fsid=%s: withdrawing from cluster at user's request\n",
97 static ssize_t
statfs_sync_store(struct gfs2_sbd
*sdp
, const char *buf
,
100 if (!capable(CAP_SYS_ADMIN
))
103 if (simple_strtol(buf
, NULL
, 0) != 1)
106 gfs2_statfs_sync(sdp
);
110 static ssize_t
shrink_store(struct gfs2_sbd
*sdp
, const char *buf
, size_t len
)
112 if (!capable(CAP_SYS_ADMIN
))
115 if (simple_strtol(buf
, NULL
, 0) != 1)
118 gfs2_gl_hash_clear(sdp
, NO_WAIT
);
122 static ssize_t
quota_sync_store(struct gfs2_sbd
*sdp
, const char *buf
,
125 if (!capable(CAP_SYS_ADMIN
))
128 if (simple_strtol(buf
, NULL
, 0) != 1)
131 gfs2_quota_sync(sdp
);
135 static ssize_t
quota_refresh_user_store(struct gfs2_sbd
*sdp
, const char *buf
,
140 if (!capable(CAP_SYS_ADMIN
))
143 id
= simple_strtoul(buf
, NULL
, 0);
145 gfs2_quota_refresh(sdp
, 1, id
);
149 static ssize_t
quota_refresh_group_store(struct gfs2_sbd
*sdp
, const char *buf
,
154 if (!capable(CAP_SYS_ADMIN
))
157 id
= simple_strtoul(buf
, NULL
, 0);
159 gfs2_quota_refresh(sdp
, 0, id
);
164 struct attribute attr
;
165 ssize_t (*show
)(struct gfs2_sbd
*, char *);
166 ssize_t (*store
)(struct gfs2_sbd
*, const char *, size_t);
169 #define GFS2_ATTR(name, mode, show, store) \
170 static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store)
172 GFS2_ATTR(id
, 0444, id_show
, NULL
);
173 GFS2_ATTR(fsname
, 0444, fsname_show
, NULL
);
174 GFS2_ATTR(freeze
, 0644, freeze_show
, freeze_store
);
175 GFS2_ATTR(shrink
, 0200, NULL
, shrink_store
);
176 GFS2_ATTR(withdraw
, 0644, withdraw_show
, withdraw_store
);
177 GFS2_ATTR(statfs_sync
, 0200, NULL
, statfs_sync_store
);
178 GFS2_ATTR(quota_sync
, 0200, NULL
, quota_sync_store
);
179 GFS2_ATTR(quota_refresh_user
, 0200, NULL
, quota_refresh_user_store
);
180 GFS2_ATTR(quota_refresh_group
, 0200, NULL
, quota_refresh_group_store
);
182 static struct attribute
*gfs2_attrs
[] = {
184 &gfs2_attr_fsname
.attr
,
185 &gfs2_attr_freeze
.attr
,
186 &gfs2_attr_shrink
.attr
,
187 &gfs2_attr_withdraw
.attr
,
188 &gfs2_attr_statfs_sync
.attr
,
189 &gfs2_attr_quota_sync
.attr
,
190 &gfs2_attr_quota_refresh_user
.attr
,
191 &gfs2_attr_quota_refresh_group
.attr
,
195 static ssize_t
gfs2_attr_show(struct kobject
*kobj
, struct attribute
*attr
,
198 struct gfs2_sbd
*sdp
= container_of(kobj
, struct gfs2_sbd
, sd_kobj
);
199 struct gfs2_attr
*a
= container_of(attr
, struct gfs2_attr
, attr
);
200 return a
->show
? a
->show(sdp
, buf
) : 0;
203 static ssize_t
gfs2_attr_store(struct kobject
*kobj
, struct attribute
*attr
,
204 const char *buf
, size_t len
)
206 struct gfs2_sbd
*sdp
= container_of(kobj
, struct gfs2_sbd
, sd_kobj
);
207 struct gfs2_attr
*a
= container_of(attr
, struct gfs2_attr
, attr
);
208 return a
->store
? a
->store(sdp
, buf
, len
) : len
;
211 static struct sysfs_ops gfs2_attr_ops
= {
212 .show
= gfs2_attr_show
,
213 .store
= gfs2_attr_store
,
216 static struct kobj_type gfs2_ktype
= {
217 .default_attrs
= gfs2_attrs
,
218 .sysfs_ops
= &gfs2_attr_ops
,
221 static struct kset gfs2_kset
= {
222 .subsys
= &fs_subsys
,
223 .kobj
= {.name
= "gfs2",},
224 .ktype
= &gfs2_ktype
,
228 * display struct lm_lockstruct fields
231 struct lockstruct_attr
{
232 struct attribute attr
;
233 ssize_t (*show
)(struct gfs2_sbd
*, char *);
236 #define LOCKSTRUCT_ATTR(name, fmt) \
237 static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
239 return sprintf(buf, fmt, sdp->sd_lockstruct.ls_##name); \
241 static struct lockstruct_attr lockstruct_attr_##name = __ATTR_RO(name)
243 LOCKSTRUCT_ATTR(jid
, "%u\n");
244 LOCKSTRUCT_ATTR(first
, "%u\n");
245 LOCKSTRUCT_ATTR(lvb_size
, "%u\n");
246 LOCKSTRUCT_ATTR(flags
, "%d\n");
248 static struct attribute
*lockstruct_attrs
[] = {
249 &lockstruct_attr_jid
.attr
,
250 &lockstruct_attr_first
.attr
,
251 &lockstruct_attr_lvb_size
.attr
,
252 &lockstruct_attr_flags
.attr
,
257 * display struct gfs2_args fields
261 struct attribute attr
;
262 ssize_t (*show
)(struct gfs2_sbd
*, char *);
265 #define ARGS_ATTR(name, fmt) \
266 static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
268 return sprintf(buf, fmt, sdp->sd_args.ar_##name); \
270 static struct args_attr args_attr_##name = __ATTR_RO(name)
272 ARGS_ATTR(lockproto
, "%s\n");
273 ARGS_ATTR(locktable
, "%s\n");
274 ARGS_ATTR(hostdata
, "%s\n");
275 ARGS_ATTR(spectator
, "%d\n");
276 ARGS_ATTR(ignore_local_fs
, "%d\n");
277 ARGS_ATTR(localcaching
, "%d\n");
278 ARGS_ATTR(localflocks
, "%d\n");
279 ARGS_ATTR(debug
, "%d\n");
280 ARGS_ATTR(upgrade
, "%d\n");
281 ARGS_ATTR(num_glockd
, "%u\n");
282 ARGS_ATTR(posix_acl
, "%d\n");
283 ARGS_ATTR(quota
, "%u\n");
284 ARGS_ATTR(suiddir
, "%d\n");
285 ARGS_ATTR(data
, "%d\n");
287 /* one oddball doesn't fit the macro mold */
288 static ssize_t
noatime_show(struct gfs2_sbd
*sdp
, char *buf
)
290 return sprintf(buf
, "%d\n", !!test_bit(SDF_NOATIME
, &sdp
->sd_flags
));
292 static struct args_attr args_attr_noatime
= __ATTR_RO(noatime
);
294 static struct attribute
*args_attrs
[] = {
295 &args_attr_lockproto
.attr
,
296 &args_attr_locktable
.attr
,
297 &args_attr_hostdata
.attr
,
298 &args_attr_spectator
.attr
,
299 &args_attr_ignore_local_fs
.attr
,
300 &args_attr_localcaching
.attr
,
301 &args_attr_localflocks
.attr
,
302 &args_attr_debug
.attr
,
303 &args_attr_upgrade
.attr
,
304 &args_attr_num_glockd
.attr
,
305 &args_attr_posix_acl
.attr
,
306 &args_attr_quota
.attr
,
307 &args_attr_suiddir
.attr
,
308 &args_attr_data
.attr
,
309 &args_attr_noatime
.attr
,
314 * display counters from superblock
317 struct counters_attr
{
318 struct attribute attr
;
319 ssize_t (*show
)(struct gfs2_sbd
*, char *);
322 #define COUNTERS_ATTR_GENERAL(name, fmt, val) \
323 static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
325 return sprintf(buf, fmt, val); \
327 static struct counters_attr counters_attr_##name = __ATTR_RO(name)
329 #define COUNTERS_ATTR_SIMPLE(name, fmt) \
330 COUNTERS_ATTR_GENERAL(name, fmt, sdp->sd_##name)
332 #define COUNTERS_ATTR_ATOMIC(name, fmt) \
333 COUNTERS_ATTR_GENERAL(name, fmt, (unsigned int)atomic_read(&sdp->sd_##name))
335 COUNTERS_ATTR_ATOMIC(glock_count
, "%u\n");
336 COUNTERS_ATTR_ATOMIC(glock_held_count
, "%u\n");
337 COUNTERS_ATTR_ATOMIC(inode_count
, "%u\n");
338 COUNTERS_ATTR_ATOMIC(bufdata_count
, "%u\n");
339 COUNTERS_ATTR_ATOMIC(unlinked_count
, "%u\n");
340 COUNTERS_ATTR_ATOMIC(quota_count
, "%u\n");
341 COUNTERS_ATTR_SIMPLE(log_num_gl
, "%u\n");
342 COUNTERS_ATTR_SIMPLE(log_num_buf
, "%u\n");
343 COUNTERS_ATTR_SIMPLE(log_num_revoke
, "%u\n");
344 COUNTERS_ATTR_SIMPLE(log_num_rg
, "%u\n");
345 COUNTERS_ATTR_SIMPLE(log_num_databuf
, "%u\n");
346 COUNTERS_ATTR_SIMPLE(log_blks_free
, "%u\n");
347 COUNTERS_ATTR_GENERAL(jd_blocks
, "%u\n", sdp
->sd_jdesc
->jd_blocks
);
348 COUNTERS_ATTR_ATOMIC(reclaim_count
, "%u\n");
349 COUNTERS_ATTR_SIMPLE(log_wraps
, "%llu\n");
350 COUNTERS_ATTR_ATOMIC(fh2dentry_misses
, "%u\n");
351 COUNTERS_ATTR_ATOMIC(reclaimed
, "%u\n");
352 COUNTERS_ATTR_ATOMIC(log_flush_incore
, "%u\n");
353 COUNTERS_ATTR_ATOMIC(log_flush_ondisk
, "%u\n");
354 COUNTERS_ATTR_ATOMIC(glock_nq_calls
, "%u\n");
355 COUNTERS_ATTR_ATOMIC(glock_dq_calls
, "%u\n");
356 COUNTERS_ATTR_ATOMIC(glock_prefetch_calls
, "%u\n");
357 COUNTERS_ATTR_ATOMIC(lm_lock_calls
, "%u\n");
358 COUNTERS_ATTR_ATOMIC(lm_unlock_calls
, "%u\n");
359 COUNTERS_ATTR_ATOMIC(lm_callbacks
, "%u\n");
360 COUNTERS_ATTR_ATOMIC(ops_address
, "%u\n");
361 COUNTERS_ATTR_ATOMIC(ops_dentry
, "%u\n");
362 COUNTERS_ATTR_ATOMIC(ops_export
, "%u\n");
363 COUNTERS_ATTR_ATOMIC(ops_file
, "%u\n");
364 COUNTERS_ATTR_ATOMIC(ops_inode
, "%u\n");
365 COUNTERS_ATTR_ATOMIC(ops_super
, "%u\n");
366 COUNTERS_ATTR_ATOMIC(ops_vm
, "%u\n");
368 static struct attribute
*counters_attrs
[] = {
369 &counters_attr_glock_count
.attr
,
370 &counters_attr_glock_held_count
.attr
,
371 &counters_attr_inode_count
.attr
,
372 &counters_attr_bufdata_count
.attr
,
373 &counters_attr_unlinked_count
.attr
,
374 &counters_attr_quota_count
.attr
,
375 &counters_attr_log_num_gl
.attr
,
376 &counters_attr_log_num_buf
.attr
,
377 &counters_attr_log_num_revoke
.attr
,
378 &counters_attr_log_num_rg
.attr
,
379 &counters_attr_log_num_databuf
.attr
,
380 &counters_attr_log_blks_free
.attr
,
381 &counters_attr_jd_blocks
.attr
,
382 &counters_attr_reclaim_count
.attr
,
383 &counters_attr_log_wraps
.attr
,
384 &counters_attr_fh2dentry_misses
.attr
,
385 &counters_attr_reclaimed
.attr
,
386 &counters_attr_log_flush_incore
.attr
,
387 &counters_attr_log_flush_ondisk
.attr
,
388 &counters_attr_glock_nq_calls
.attr
,
389 &counters_attr_glock_dq_calls
.attr
,
390 &counters_attr_glock_prefetch_calls
.attr
,
391 &counters_attr_lm_lock_calls
.attr
,
392 &counters_attr_lm_unlock_calls
.attr
,
393 &counters_attr_lm_callbacks
.attr
,
394 &counters_attr_ops_address
.attr
,
395 &counters_attr_ops_dentry
.attr
,
396 &counters_attr_ops_export
.attr
,
397 &counters_attr_ops_file
.attr
,
398 &counters_attr_ops_inode
.attr
,
399 &counters_attr_ops_super
.attr
,
400 &counters_attr_ops_vm
.attr
,
405 * get and set struct gfs2_tune fields
408 static ssize_t
quota_scale_show(struct gfs2_sbd
*sdp
, char *buf
)
410 return sprintf(buf
, "%u %u\n", sdp
->sd_tune
.gt_quota_scale_num
,
411 sdp
->sd_tune
.gt_quota_scale_den
);
414 static ssize_t
quota_scale_store(struct gfs2_sbd
*sdp
, const char *buf
,
417 struct gfs2_tune
*gt
= &sdp
->sd_tune
;
420 if (!capable(CAP_SYS_ADMIN
))
423 if (sscanf(buf
, "%u %u", &x
, &y
) != 2 || !y
)
426 spin_lock(>
->gt_spin
);
427 gt
->gt_quota_scale_num
= x
;
428 gt
->gt_quota_scale_den
= y
;
429 spin_unlock(>
->gt_spin
);
433 static ssize_t
tune_set(struct gfs2_sbd
*sdp
, unsigned int *field
,
434 int check_zero
, const char *buf
, size_t len
)
436 struct gfs2_tune
*gt
= &sdp
->sd_tune
;
439 if (!capable(CAP_SYS_ADMIN
))
442 x
= simple_strtoul(buf
, NULL
, 0);
444 if (check_zero
&& !x
)
447 spin_lock(>
->gt_spin
);
449 spin_unlock(>
->gt_spin
);
454 struct attribute attr
;
455 ssize_t (*show
)(struct gfs2_sbd
*, char *);
456 ssize_t (*store
)(struct gfs2_sbd
*, const char *, size_t);
459 #define TUNE_ATTR_3(name, show, store) \
460 static struct tune_attr tune_attr_##name = __ATTR(name, 0644, show, store)
462 #define TUNE_ATTR_2(name, store) \
463 static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
465 return sprintf(buf, "%u\n", sdp->sd_tune.gt_##name); \
467 TUNE_ATTR_3(name, name##_show, store)
469 #define TUNE_ATTR(name, check_zero) \
470 static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
472 return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \
474 TUNE_ATTR_2(name, name##_store)
476 #define TUNE_ATTR_DAEMON(name, process) \
477 static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
479 ssize_t r = tune_set(sdp, &sdp->sd_tune.gt_##name, 1, buf, len); \
480 wake_up_process(sdp->sd_##process); \
483 TUNE_ATTR_2(name, name##_store)
485 TUNE_ATTR(ilimit
, 0);
486 TUNE_ATTR(ilimit_tries
, 0);
487 TUNE_ATTR(ilimit_min
, 0);
488 TUNE_ATTR(demote_secs
, 0);
489 TUNE_ATTR(incore_log_blocks
, 0);
490 TUNE_ATTR(log_flush_secs
, 0);
491 TUNE_ATTR(jindex_refresh_secs
, 0);
492 TUNE_ATTR(quota_warn_period
, 0);
493 TUNE_ATTR(quota_quantum
, 0);
494 TUNE_ATTR(atime_quantum
, 0);
495 TUNE_ATTR(max_readahead
, 0);
496 TUNE_ATTR(complain_secs
, 0);
497 TUNE_ATTR(reclaim_limit
, 0);
498 TUNE_ATTR(prefetch_secs
, 0);
499 TUNE_ATTR(statfs_slow
, 0);
500 TUNE_ATTR(new_files_jdata
, 0);
501 TUNE_ATTR(new_files_directio
, 0);
502 TUNE_ATTR(quota_simul_sync
, 1);
503 TUNE_ATTR(quota_cache_secs
, 1);
504 TUNE_ATTR(max_atomic_write
, 1);
505 TUNE_ATTR(stall_secs
, 1);
506 TUNE_ATTR(entries_per_readdir
, 1);
507 TUNE_ATTR(greedy_default
, 1);
508 TUNE_ATTR(greedy_quantum
, 1);
509 TUNE_ATTR(greedy_max
, 1);
510 TUNE_ATTR(statfs_quantum
, 1);
511 TUNE_ATTR_DAEMON(scand_secs
, scand_process
);
512 TUNE_ATTR_DAEMON(recoverd_secs
, recoverd_process
);
513 TUNE_ATTR_DAEMON(logd_secs
, logd_process
);
514 TUNE_ATTR_DAEMON(quotad_secs
, quotad_process
);
515 TUNE_ATTR_DAEMON(inoded_secs
, inoded_process
);
516 TUNE_ATTR_3(quota_scale
, quota_scale_show
, quota_scale_store
);
518 static struct attribute
*tune_attrs
[] = {
519 &tune_attr_ilimit
.attr
,
520 &tune_attr_ilimit_tries
.attr
,
521 &tune_attr_ilimit_min
.attr
,
522 &tune_attr_demote_secs
.attr
,
523 &tune_attr_incore_log_blocks
.attr
,
524 &tune_attr_log_flush_secs
.attr
,
525 &tune_attr_jindex_refresh_secs
.attr
,
526 &tune_attr_quota_warn_period
.attr
,
527 &tune_attr_quota_quantum
.attr
,
528 &tune_attr_atime_quantum
.attr
,
529 &tune_attr_max_readahead
.attr
,
530 &tune_attr_complain_secs
.attr
,
531 &tune_attr_reclaim_limit
.attr
,
532 &tune_attr_prefetch_secs
.attr
,
533 &tune_attr_statfs_slow
.attr
,
534 &tune_attr_quota_simul_sync
.attr
,
535 &tune_attr_quota_cache_secs
.attr
,
536 &tune_attr_max_atomic_write
.attr
,
537 &tune_attr_stall_secs
.attr
,
538 &tune_attr_entries_per_readdir
.attr
,
539 &tune_attr_greedy_default
.attr
,
540 &tune_attr_greedy_quantum
.attr
,
541 &tune_attr_greedy_max
.attr
,
542 &tune_attr_statfs_quantum
.attr
,
543 &tune_attr_scand_secs
.attr
,
544 &tune_attr_recoverd_secs
.attr
,
545 &tune_attr_logd_secs
.attr
,
546 &tune_attr_quotad_secs
.attr
,
547 &tune_attr_inoded_secs
.attr
,
548 &tune_attr_quota_scale
.attr
,
549 &tune_attr_new_files_jdata
.attr
,
550 &tune_attr_new_files_directio
.attr
,
554 static struct attribute_group lockstruct_group
= {
555 .name
= "lockstruct",
556 .attrs
= lockstruct_attrs
559 static struct attribute_group counters_group
= {
561 .attrs
= counters_attrs
564 static struct attribute_group args_group
= {
569 static struct attribute_group tune_group
= {
574 int gfs2_sys_fs_add(struct gfs2_sbd
*sdp
)
578 sdp
->sd_kobj
.kset
= &gfs2_kset
;
579 sdp
->sd_kobj
.ktype
= &gfs2_ktype
;
581 error
= kobject_set_name(&sdp
->sd_kobj
, "%s", sdp
->sd_table_name
);
585 error
= kobject_register(&sdp
->sd_kobj
);
589 error
= sysfs_create_group(&sdp
->sd_kobj
, &lockstruct_group
);
593 error
= sysfs_create_group(&sdp
->sd_kobj
, &counters_group
);
595 goto fail_lockstruct
;
597 error
= sysfs_create_group(&sdp
->sd_kobj
, &args_group
);
601 error
= sysfs_create_group(&sdp
->sd_kobj
, &tune_group
);
608 sysfs_remove_group(&sdp
->sd_kobj
, &args_group
);
610 sysfs_remove_group(&sdp
->sd_kobj
, &counters_group
);
612 sysfs_remove_group(&sdp
->sd_kobj
, &lockstruct_group
);
614 kobject_unregister(&sdp
->sd_kobj
);
619 void gfs2_sys_fs_del(struct gfs2_sbd
*sdp
)
621 sysfs_remove_group(&sdp
->sd_kobj
, &tune_group
);
622 sysfs_remove_group(&sdp
->sd_kobj
, &args_group
);
623 sysfs_remove_group(&sdp
->sd_kobj
, &counters_group
);
624 sysfs_remove_group(&sdp
->sd_kobj
, &lockstruct_group
);
625 kobject_unregister(&sdp
->sd_kobj
);
628 int gfs2_sys_init(void)
630 gfs2_sys_margs
= NULL
;
631 spin_lock_init(&gfs2_sys_margs_lock
);
632 return kset_register(&gfs2_kset
);
635 void gfs2_sys_uninit(void)
637 kfree(gfs2_sys_margs
);
638 kset_unregister(&gfs2_kset
);