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authorYehuda Sadeh <yehuda@hq.newdream.net>2010-04-06 18:14:15 -0400
committerSage Weil <sage@newdream.net>2010-10-20 18:37:28 -0400
commit3d14c5d2b6e15c21d8e5467dc62d33127c23a644 (patch)
tree7d123c47847df9d1e865b6b78dc7da3fe739b704 /fs/ceph/debugfs.c
parentae1533b62b3369e6ae32338f4a77d64d0e88f676 (diff)
ceph: factor out libceph from Ceph file system
This factors out protocol and low-level storage parts of ceph into a separate libceph module living in net/ceph and include/linux/ceph. This is mostly a matter of moving files around. However, a few key pieces of the interface change as well: - ceph_client becomes ceph_fs_client and ceph_client, where the latter captures the mon and osd clients, and the fs_client gets the mds client and file system specific pieces. - Mount option parsing and debugfs setup is correspondingly broken into two pieces. - The mon client gets a generic handler callback for otherwise unknown messages (mds map, in this case). - The basic supported/required feature bits can be expanded (and are by ceph_fs_client). No functional change, aside from some subtle error handling cases that got cleaned up in the refactoring process. Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/debugfs.c')
-rw-r--r--fs/ceph/debugfs.c407
1 files changed, 94 insertions, 313 deletions
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
index 6fd8b20a8611..94fe1d284c3a 100644
--- a/fs/ceph/debugfs.c
+++ b/fs/ceph/debugfs.c
@@ -1,4 +1,4 @@
1#include "ceph_debug.h" 1#include <linux/ceph/ceph_debug.h>
2 2
3#include <linux/device.h> 3#include <linux/device.h>
4#include <linux/slab.h> 4#include <linux/slab.h>
@@ -7,143 +7,48 @@
7#include <linux/debugfs.h> 7#include <linux/debugfs.h>
8#include <linux/seq_file.h> 8#include <linux/seq_file.h>
9 9
10#include "super.h" 10#include <linux/ceph/libceph.h>
11#include "mds_client.h" 11#include <linux/ceph/mon_client.h>
12#include "mon_client.h" 12#include <linux/ceph/auth.h>
13#include "auth.h" 13#include <linux/ceph/debugfs.h>
14 14
15#ifdef CONFIG_DEBUG_FS 15#ifdef CONFIG_DEBUG_FS
16 16
17/* 17#include "super.h"
18 * Implement /sys/kernel/debug/ceph fun 18#include "mds_client.h"
19 *
20 * /sys/kernel/debug/ceph/client* - an instance of the ceph client
21 * .../osdmap - current osdmap
22 * .../mdsmap - current mdsmap
23 * .../monmap - current monmap
24 * .../osdc - active osd requests
25 * .../mdsc - active mds requests
26 * .../monc - mon client state
27 * .../dentry_lru - dump contents of dentry lru
28 * .../caps - expose cap (reservation) stats
29 * .../bdi - symlink to ../../bdi/something
30 */
31
32static struct dentry *ceph_debugfs_dir;
33
34static int monmap_show(struct seq_file *s, void *p)
35{
36 int i;
37 struct ceph_client *client = s->private;
38
39 if (client->monc.monmap == NULL)
40 return 0;
41
42 seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
43 for (i = 0; i < client->monc.monmap->num_mon; i++) {
44 struct ceph_entity_inst *inst =
45 &client->monc.monmap->mon_inst[i];
46
47 seq_printf(s, "\t%s%lld\t%s\n",
48 ENTITY_NAME(inst->name),
49 pr_addr(&inst->addr.in_addr));
50 }
51 return 0;
52}
53 19
54static int mdsmap_show(struct seq_file *s, void *p) 20static int mdsmap_show(struct seq_file *s, void *p)
55{ 21{
56 int i; 22 int i;
57 struct ceph_client *client = s->private; 23 struct ceph_fs_client *fsc = s->private;
58 24
59 if (client->mdsc.mdsmap == NULL) 25 if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
60 return 0; 26 return 0;
61 seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch); 27 seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
62 seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root); 28 seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
63 seq_printf(s, "session_timeout %d\n", 29 seq_printf(s, "session_timeout %d\n",
64 client->mdsc.mdsmap->m_session_timeout); 30 fsc->mdsc->mdsmap->m_session_timeout);
65 seq_printf(s, "session_autoclose %d\n", 31 seq_printf(s, "session_autoclose %d\n",
66 client->mdsc.mdsmap->m_session_autoclose); 32 fsc->mdsc->mdsmap->m_session_autoclose);
67 for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) { 33 for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
68 struct ceph_entity_addr *addr = 34 struct ceph_entity_addr *addr =
69 &client->mdsc.mdsmap->m_info[i].addr; 35 &fsc->mdsc->mdsmap->m_info[i].addr;
70 int state = client->mdsc.mdsmap->m_info[i].state; 36 int state = fsc->mdsc->mdsmap->m_info[i].state;
71 37
72 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr), 38 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
39 ceph_pr_addr(&addr->in_addr),
73 ceph_mds_state_name(state)); 40 ceph_mds_state_name(state));
74 } 41 }
75 return 0; 42 return 0;
76} 43}
77 44
78static int osdmap_show(struct seq_file *s, void *p) 45/*
79{ 46 * mdsc debugfs
80 int i; 47 */
81 struct ceph_client *client = s->private;
82 struct rb_node *n;
83
84 if (client->osdc.osdmap == NULL)
85 return 0;
86 seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
87 seq_printf(s, "flags%s%s\n",
88 (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
89 " NEARFULL" : "",
90 (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
91 " FULL" : "");
92 for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
93 struct ceph_pg_pool_info *pool =
94 rb_entry(n, struct ceph_pg_pool_info, node);
95 seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
96 pool->id, pool->v.pg_num, pool->pg_num_mask,
97 pool->v.lpg_num, pool->lpg_num_mask);
98 }
99 for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
100 struct ceph_entity_addr *addr =
101 &client->osdc.osdmap->osd_addr[i];
102 int state = client->osdc.osdmap->osd_state[i];
103 char sb[64];
104
105 seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
106 i, pr_addr(&addr->in_addr),
107 ((client->osdc.osdmap->osd_weight[i]*100) >> 16),
108 ceph_osdmap_state_str(sb, sizeof(sb), state));
109 }
110 return 0;
111}
112
113static int monc_show(struct seq_file *s, void *p)
114{
115 struct ceph_client *client = s->private;
116 struct ceph_mon_generic_request *req;
117 struct ceph_mon_client *monc = &client->monc;
118 struct rb_node *rp;
119
120 mutex_lock(&monc->mutex);
121
122 if (monc->have_mdsmap)
123 seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
124 if (monc->have_osdmap)
125 seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
126 if (monc->want_next_osdmap)
127 seq_printf(s, "want next osdmap\n");
128
129 for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
130 __u16 op;
131 req = rb_entry(rp, struct ceph_mon_generic_request, node);
132 op = le16_to_cpu(req->request->hdr.type);
133 if (op == CEPH_MSG_STATFS)
134 seq_printf(s, "%lld statfs\n", req->tid);
135 else
136 seq_printf(s, "%lld unknown\n", req->tid);
137 }
138
139 mutex_unlock(&monc->mutex);
140 return 0;
141}
142
143static int mdsc_show(struct seq_file *s, void *p) 48static int mdsc_show(struct seq_file *s, void *p)
144{ 49{
145 struct ceph_client *client = s->private; 50 struct ceph_fs_client *fsc = s->private;
146 struct ceph_mds_client *mdsc = &client->mdsc; 51 struct ceph_mds_client *mdsc = fsc->mdsc;
147 struct ceph_mds_request *req; 52 struct ceph_mds_request *req;
148 struct rb_node *rp; 53 struct rb_node *rp;
149 int pathlen; 54 int pathlen;
@@ -214,61 +119,12 @@ static int mdsc_show(struct seq_file *s, void *p)
214 return 0; 119 return 0;
215} 120}
216 121
217static int osdc_show(struct seq_file *s, void *pp)
218{
219 struct ceph_client *client = s->private;
220 struct ceph_osd_client *osdc = &client->osdc;
221 struct rb_node *p;
222
223 mutex_lock(&osdc->request_mutex);
224 for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
225 struct ceph_osd_request *req;
226 struct ceph_osd_request_head *head;
227 struct ceph_osd_op *op;
228 int num_ops;
229 int opcode, olen;
230 int i;
231
232 req = rb_entry(p, struct ceph_osd_request, r_node);
233
234 seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
235 req->r_osd ? req->r_osd->o_osd : -1,
236 le32_to_cpu(req->r_pgid.pool),
237 le16_to_cpu(req->r_pgid.ps));
238
239 head = req->r_request->front.iov_base;
240 op = (void *)(head + 1);
241
242 num_ops = le16_to_cpu(head->num_ops);
243 olen = le32_to_cpu(head->object_len);
244 seq_printf(s, "%.*s", olen,
245 (const char *)(head->ops + num_ops));
246
247 if (req->r_reassert_version.epoch)
248 seq_printf(s, "\t%u'%llu",
249 (unsigned)le32_to_cpu(req->r_reassert_version.epoch),
250 le64_to_cpu(req->r_reassert_version.version));
251 else
252 seq_printf(s, "\t");
253
254 for (i = 0; i < num_ops; i++) {
255 opcode = le16_to_cpu(op->op);
256 seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
257 op++;
258 }
259
260 seq_printf(s, "\n");
261 }
262 mutex_unlock(&osdc->request_mutex);
263 return 0;
264}
265
266static int caps_show(struct seq_file *s, void *p) 122static int caps_show(struct seq_file *s, void *p)
267{ 123{
268 struct ceph_client *client = s->private; 124 struct ceph_fs_client *fsc = s->private;
269 int total, avail, used, reserved, min; 125 int total, avail, used, reserved, min;
270 126
271 ceph_reservation_status(client, &total, &avail, &used, &reserved, &min); 127 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
272 seq_printf(s, "total\t\t%d\n" 128 seq_printf(s, "total\t\t%d\n"
273 "avail\t\t%d\n" 129 "avail\t\t%d\n"
274 "used\t\t%d\n" 130 "used\t\t%d\n"
@@ -280,8 +136,8 @@ static int caps_show(struct seq_file *s, void *p)
280 136
281static int dentry_lru_show(struct seq_file *s, void *ptr) 137static int dentry_lru_show(struct seq_file *s, void *ptr)
282{ 138{
283 struct ceph_client *client = s->private; 139 struct ceph_fs_client *fsc = s->private;
284 struct ceph_mds_client *mdsc = &client->mdsc; 140 struct ceph_mds_client *mdsc = fsc->mdsc;
285 struct ceph_dentry_info *di; 141 struct ceph_dentry_info *di;
286 142
287 spin_lock(&mdsc->dentry_lru_lock); 143 spin_lock(&mdsc->dentry_lru_lock);
@@ -295,199 +151,124 @@ static int dentry_lru_show(struct seq_file *s, void *ptr)
295 return 0; 151 return 0;
296} 152}
297 153
298#define DEFINE_SHOW_FUNC(name) \ 154CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
299static int name##_open(struct inode *inode, struct file *file) \ 155CEPH_DEFINE_SHOW_FUNC(mdsc_show)
300{ \ 156CEPH_DEFINE_SHOW_FUNC(caps_show)
301 struct seq_file *sf; \ 157CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
302 int ret; \ 158
303 \
304 ret = single_open(file, name, NULL); \
305 sf = file->private_data; \
306 sf->private = inode->i_private; \
307 return ret; \
308} \
309 \
310static const struct file_operations name##_fops = { \
311 .open = name##_open, \
312 .read = seq_read, \
313 .llseek = seq_lseek, \
314 .release = single_release, \
315};
316
317DEFINE_SHOW_FUNC(monmap_show)
318DEFINE_SHOW_FUNC(mdsmap_show)
319DEFINE_SHOW_FUNC(osdmap_show)
320DEFINE_SHOW_FUNC(monc_show)
321DEFINE_SHOW_FUNC(mdsc_show)
322DEFINE_SHOW_FUNC(osdc_show)
323DEFINE_SHOW_FUNC(dentry_lru_show)
324DEFINE_SHOW_FUNC(caps_show)
325 159
160/*
161 * debugfs
162 */
326static int congestion_kb_set(void *data, u64 val) 163static int congestion_kb_set(void *data, u64 val)
327{ 164{
328 struct ceph_client *client = (struct ceph_client *)data; 165 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
329
330 if (client)
331 client->mount_args->congestion_kb = (int)val;
332 166
167 fsc->mount_options->congestion_kb = (int)val;
333 return 0; 168 return 0;
334} 169}
335 170
336static int congestion_kb_get(void *data, u64 *val) 171static int congestion_kb_get(void *data, u64 *val)
337{ 172{
338 struct ceph_client *client = (struct ceph_client *)data; 173 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
339
340 if (client)
341 *val = (u64)client->mount_args->congestion_kb;
342 174
175 *val = (u64)fsc->mount_options->congestion_kb;
343 return 0; 176 return 0;
344} 177}
345 178
346
347DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get, 179DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
348 congestion_kb_set, "%llu\n"); 180 congestion_kb_set, "%llu\n");
349 181
350int __init ceph_debugfs_init(void)
351{
352 ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
353 if (!ceph_debugfs_dir)
354 return -ENOMEM;
355 return 0;
356}
357 182
358void ceph_debugfs_cleanup(void) 183void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
359{ 184{
360 debugfs_remove(ceph_debugfs_dir); 185 dout("ceph_fs_debugfs_cleanup\n");
186 debugfs_remove(fsc->debugfs_bdi);
187 debugfs_remove(fsc->debugfs_congestion_kb);
188 debugfs_remove(fsc->debugfs_mdsmap);
189 debugfs_remove(fsc->debugfs_caps);
190 debugfs_remove(fsc->debugfs_mdsc);
191 debugfs_remove(fsc->debugfs_dentry_lru);
361} 192}
362 193
363int ceph_debugfs_client_init(struct ceph_client *client) 194int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
364{ 195{
365 int ret = 0; 196 char name[100];
366 char name[80]; 197 int err = -ENOMEM;
367
368 snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
369 client->monc.auth->global_id);
370
371 client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
372 if (!client->debugfs_dir)
373 goto out;
374 198
375 client->monc.debugfs_file = debugfs_create_file("monc", 199 dout("ceph_fs_debugfs_init\n");
376 0600, 200 fsc->debugfs_congestion_kb =
377 client->debugfs_dir, 201 debugfs_create_file("writeback_congestion_kb",
378 client, 202 0600,
379 &monc_show_fops); 203 fsc->client->debugfs_dir,
380 if (!client->monc.debugfs_file) 204 fsc,
381 goto out; 205 &congestion_kb_fops);
382 206 if (!fsc->debugfs_congestion_kb)
383 client->mdsc.debugfs_file = debugfs_create_file("mdsc",
384 0600,
385 client->debugfs_dir,
386 client,
387 &mdsc_show_fops);
388 if (!client->mdsc.debugfs_file)
389 goto out; 207 goto out;
390 208
391 client->osdc.debugfs_file = debugfs_create_file("osdc", 209 dout("a\n");
392 0600,
393 client->debugfs_dir,
394 client,
395 &osdc_show_fops);
396 if (!client->osdc.debugfs_file)
397 goto out;
398 210
399 client->debugfs_monmap = debugfs_create_file("monmap", 211 snprintf(name, sizeof(name), "../../bdi/%s",
400 0600, 212 dev_name(fsc->backing_dev_info.dev));
401 client->debugfs_dir, 213 fsc->debugfs_bdi =
402 client, 214 debugfs_create_symlink("bdi",
403 &monmap_show_fops); 215 fsc->client->debugfs_dir,
404 if (!client->debugfs_monmap) 216 name);
217 if (!fsc->debugfs_bdi)
405 goto out; 218 goto out;
406 219
407 client->debugfs_mdsmap = debugfs_create_file("mdsmap", 220 dout("b\n");
221 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
408 0600, 222 0600,
409 client->debugfs_dir, 223 fsc->client->debugfs_dir,
410 client, 224 fsc,
411 &mdsmap_show_fops); 225 &mdsmap_show_fops);
412 if (!client->debugfs_mdsmap) 226 if (!fsc->debugfs_mdsmap)
413 goto out; 227 goto out;
414 228
415 client->debugfs_osdmap = debugfs_create_file("osdmap", 229 dout("ca\n");
416 0600, 230 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
417 client->debugfs_dir, 231 0600,
418 client, 232 fsc->client->debugfs_dir,
419 &osdmap_show_fops); 233 fsc,
420 if (!client->debugfs_osdmap) 234 &mdsc_show_fops);
235 if (!fsc->debugfs_mdsc)
421 goto out; 236 goto out;
422 237
423 client->debugfs_dentry_lru = debugfs_create_file("dentry_lru", 238 dout("da\n");
424 0600, 239 fsc->debugfs_caps = debugfs_create_file("caps",
425 client->debugfs_dir,
426 client,
427 &dentry_lru_show_fops);
428 if (!client->debugfs_dentry_lru)
429 goto out;
430
431 client->debugfs_caps = debugfs_create_file("caps",
432 0400, 240 0400,
433 client->debugfs_dir, 241 fsc->client->debugfs_dir,
434 client, 242 fsc,
435 &caps_show_fops); 243 &caps_show_fops);
436 if (!client->debugfs_caps) 244 if (!fsc->debugfs_caps)
437 goto out; 245 goto out;
438 246
439 client->debugfs_congestion_kb = 247 dout("ea\n");
440 debugfs_create_file("writeback_congestion_kb", 248 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
441 0600, 249 0600,
442 client->debugfs_dir, 250 fsc->client->debugfs_dir,
443 client, 251 fsc,
444 &congestion_kb_fops); 252 &dentry_lru_show_fops);
445 if (!client->debugfs_congestion_kb) 253 if (!fsc->debugfs_dentry_lru)
446 goto out; 254 goto out;
447 255
448 sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev));
449 client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir,
450 name);
451
452 return 0; 256 return 0;
453 257
454out: 258out:
455 ceph_debugfs_client_cleanup(client); 259 ceph_fs_debugfs_cleanup(fsc);
456 return ret; 260 return err;
457} 261}
458 262
459void ceph_debugfs_client_cleanup(struct ceph_client *client)
460{
461 debugfs_remove(client->debugfs_bdi);
462 debugfs_remove(client->debugfs_caps);
463 debugfs_remove(client->debugfs_dentry_lru);
464 debugfs_remove(client->debugfs_osdmap);
465 debugfs_remove(client->debugfs_mdsmap);
466 debugfs_remove(client->debugfs_monmap);
467 debugfs_remove(client->osdc.debugfs_file);
468 debugfs_remove(client->mdsc.debugfs_file);
469 debugfs_remove(client->monc.debugfs_file);
470 debugfs_remove(client->debugfs_congestion_kb);
471 debugfs_remove(client->debugfs_dir);
472}
473 263
474#else /* CONFIG_DEBUG_FS */ 264#else /* CONFIG_DEBUG_FS */
475 265
476int __init ceph_debugfs_init(void) 266int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
477{
478 return 0;
479}
480
481void ceph_debugfs_cleanup(void)
482{
483}
484
485int ceph_debugfs_client_init(struct ceph_client *client)
486{ 267{
487 return 0; 268 return 0;
488} 269}
489 270
490void ceph_debugfs_client_cleanup(struct ceph_client *client) 271void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
491{ 272{
492} 273}
493 274
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