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Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
d67ae825 TH |
2 | /* |
3 | * Module for pnfs flexfile layout driver. | |
4 | * | |
5 | * Copyright (c) 2014, Primary Data, Inc. All rights reserved. | |
6 | * | |
7 | * Tao Peng <bergwolf@primarydata.com> | |
8 | */ | |
9 | ||
10 | #include <linux/nfs_fs.h> | |
7af46292 | 11 | #include <linux/nfs_mount.h> |
d67ae825 TH |
12 | #include <linux/nfs_page.h> |
13 | #include <linux/module.h> | |
97f68c6b | 14 | #include <linux/sched/mm.h> |
d67ae825 TH |
15 | |
16 | #include <linux/sunrpc/metrics.h> | |
d67ae825 TH |
17 | |
18 | #include "flexfilelayout.h" | |
19 | #include "../nfs4session.h" | |
40c64c26 | 20 | #include "../nfs4idmap.h" |
d67ae825 TH |
21 | #include "../internal.h" |
22 | #include "../delegation.h" | |
23 | #include "../nfs4trace.h" | |
24 | #include "../iostat.h" | |
25 | #include "../nfs.h" | |
ad4dc53e | 26 | #include "../nfs42.h" |
d67ae825 TH |
27 | |
28 | #define NFSDBG_FACILITY NFSDBG_PNFS_LD | |
29 | ||
30 | #define FF_LAYOUT_POLL_RETRY_MAX (15*HZ) | |
5b9b3c85 TM |
31 | #define FF_LAYOUTRETURN_MAXERR 20 |
32 | ||
33344e0f TM |
33 | static unsigned short io_maxretrans; |
34 | ||
9c455a8c | 35 | static const struct pnfs_commit_ops ff_layout_commit_ops; |
54e4a0df TM |
36 | static void ff_layout_read_record_layoutstats_done(struct rpc_task *task, |
37 | struct nfs_pgio_header *hdr); | |
230bc962 TM |
38 | static int ff_layout_mirror_prepare_stats(struct pnfs_layout_hdr *lo, |
39 | struct nfs42_layoutstat_devinfo *devinfo, | |
40 | int dev_limit); | |
41 | static void ff_layout_encode_ff_layoutupdate(struct xdr_stream *xdr, | |
42 | const struct nfs42_layoutstat_devinfo *devinfo, | |
43 | struct nfs4_ff_layout_mirror *mirror); | |
54e4a0df | 44 | |
d67ae825 TH |
45 | static struct pnfs_layout_hdr * |
46 | ff_layout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags) | |
47 | { | |
48 | struct nfs4_flexfile_layout *ffl; | |
49 | ||
50 | ffl = kzalloc(sizeof(*ffl), gfp_flags); | |
51 | if (ffl) { | |
c21e7168 | 52 | pnfs_init_ds_commit_info(&ffl->commit_info); |
d67ae825 | 53 | INIT_LIST_HEAD(&ffl->error_list); |
266d12d4 | 54 | INIT_LIST_HEAD(&ffl->mirrors); |
1c8d477a | 55 | ffl->last_report_time = ktime_get(); |
9c455a8c | 56 | ffl->commit_info.ops = &ff_layout_commit_ops; |
d67ae825 TH |
57 | return &ffl->generic_hdr; |
58 | } else | |
59 | return NULL; | |
60 | } | |
61 | ||
62 | static void | |
63 | ff_layout_free_layout_hdr(struct pnfs_layout_hdr *lo) | |
64 | { | |
cf6605d1 | 65 | struct nfs4_flexfile_layout *ffl = FF_LAYOUT_FROM_HDR(lo); |
d67ae825 TH |
66 | struct nfs4_ff_layout_ds_err *err, *n; |
67 | ||
cf6605d1 | 68 | list_for_each_entry_safe(err, n, &ffl->error_list, list) { |
d67ae825 TH |
69 | list_del(&err->list); |
70 | kfree(err); | |
71 | } | |
cf6605d1 | 72 | kfree_rcu(ffl, generic_hdr.plh_rcu); |
d67ae825 TH |
73 | } |
74 | ||
93b717fd | 75 | static int decode_pnfs_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) |
d67ae825 TH |
76 | { |
77 | __be32 *p; | |
78 | ||
79 | p = xdr_inline_decode(xdr, NFS4_STATEID_SIZE); | |
80 | if (unlikely(p == NULL)) | |
81 | return -ENOBUFS; | |
93b717fd TM |
82 | stateid->type = NFS4_PNFS_DS_STATEID_TYPE; |
83 | memcpy(stateid->data, p, NFS4_STATEID_SIZE); | |
d67ae825 TH |
84 | dprintk("%s: stateid id= [%x%x%x%x]\n", __func__, |
85 | p[0], p[1], p[2], p[3]); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | static int decode_deviceid(struct xdr_stream *xdr, struct nfs4_deviceid *devid) | |
90 | { | |
91 | __be32 *p; | |
92 | ||
93 | p = xdr_inline_decode(xdr, NFS4_DEVICEID4_SIZE); | |
94 | if (unlikely(!p)) | |
95 | return -ENOBUFS; | |
96 | memcpy(devid, p, NFS4_DEVICEID4_SIZE); | |
97 | nfs4_print_deviceid(devid); | |
98 | return 0; | |
99 | } | |
100 | ||
101 | static int decode_nfs_fh(struct xdr_stream *xdr, struct nfs_fh *fh) | |
102 | { | |
103 | __be32 *p; | |
104 | ||
105 | p = xdr_inline_decode(xdr, 4); | |
106 | if (unlikely(!p)) | |
107 | return -ENOBUFS; | |
108 | fh->size = be32_to_cpup(p++); | |
109 | if (fh->size > sizeof(struct nfs_fh)) { | |
110 | printk(KERN_ERR "NFS flexfiles: Too big fh received %d\n", | |
111 | fh->size); | |
112 | return -EOVERFLOW; | |
113 | } | |
114 | /* fh.data */ | |
115 | p = xdr_inline_decode(xdr, fh->size); | |
116 | if (unlikely(!p)) | |
117 | return -ENOBUFS; | |
118 | memcpy(&fh->data, p, fh->size); | |
119 | dprintk("%s: fh len %d\n", __func__, fh->size); | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | /* | |
125 | * Currently only stringified uids and gids are accepted. | |
126 | * I.e., kerberos is not supported to the DSes, so no pricipals. | |
127 | * | |
128 | * That means that one common function will suffice, but when | |
129 | * principals are added, this should be split to accomodate | |
130 | * calls to both nfs_map_name_to_uid() and nfs_map_group_to_gid(). | |
131 | */ | |
132 | static int | |
133 | decode_name(struct xdr_stream *xdr, u32 *id) | |
134 | { | |
135 | __be32 *p; | |
136 | int len; | |
137 | ||
138 | /* opaque_length(4)*/ | |
139 | p = xdr_inline_decode(xdr, 4); | |
140 | if (unlikely(!p)) | |
141 | return -ENOBUFS; | |
142 | len = be32_to_cpup(p++); | |
143 | if (len < 0) | |
144 | return -EINVAL; | |
145 | ||
146 | dprintk("%s: len %u\n", __func__, len); | |
147 | ||
148 | /* opaque body */ | |
149 | p = xdr_inline_decode(xdr, len); | |
150 | if (unlikely(!p)) | |
151 | return -ENOBUFS; | |
152 | ||
153 | if (!nfs_map_string_to_numeric((char *)p, len, id)) | |
154 | return -EINVAL; | |
155 | ||
156 | return 0; | |
157 | } | |
158 | ||
266d12d4 TM |
159 | static bool ff_mirror_match_fh(const struct nfs4_ff_layout_mirror *m1, |
160 | const struct nfs4_ff_layout_mirror *m2) | |
161 | { | |
162 | int i, j; | |
163 | ||
164 | if (m1->fh_versions_cnt != m2->fh_versions_cnt) | |
165 | return false; | |
166 | for (i = 0; i < m1->fh_versions_cnt; i++) { | |
167 | bool found_fh = false; | |
86fb449b | 168 | for (j = 0; j < m2->fh_versions_cnt; j++) { |
266d12d4 TM |
169 | if (nfs_compare_fh(&m1->fh_versions[i], |
170 | &m2->fh_versions[j]) == 0) { | |
171 | found_fh = true; | |
172 | break; | |
173 | } | |
174 | } | |
175 | if (!found_fh) | |
176 | return false; | |
177 | } | |
178 | return true; | |
179 | } | |
180 | ||
181 | static struct nfs4_ff_layout_mirror * | |
182 | ff_layout_add_mirror(struct pnfs_layout_hdr *lo, | |
183 | struct nfs4_ff_layout_mirror *mirror) | |
184 | { | |
185 | struct nfs4_flexfile_layout *ff_layout = FF_LAYOUT_FROM_HDR(lo); | |
186 | struct nfs4_ff_layout_mirror *pos; | |
187 | struct inode *inode = lo->plh_inode; | |
188 | ||
189 | spin_lock(&inode->i_lock); | |
190 | list_for_each_entry(pos, &ff_layout->mirrors, mirrors) { | |
65990d1a | 191 | if (memcmp(&mirror->devid, &pos->devid, sizeof(pos->devid)) != 0) |
266d12d4 TM |
192 | continue; |
193 | if (!ff_mirror_match_fh(mirror, pos)) | |
194 | continue; | |
81a090b9 | 195 | if (refcount_inc_not_zero(&pos->ref)) { |
266d12d4 TM |
196 | spin_unlock(&inode->i_lock); |
197 | return pos; | |
198 | } | |
199 | } | |
200 | list_add(&mirror->mirrors, &ff_layout->mirrors); | |
201 | mirror->layout = lo; | |
202 | spin_unlock(&inode->i_lock); | |
203 | return mirror; | |
204 | } | |
205 | ||
e3b1df2d | 206 | static void |
266d12d4 TM |
207 | ff_layout_remove_mirror(struct nfs4_ff_layout_mirror *mirror) |
208 | { | |
209 | struct inode *inode; | |
210 | if (mirror->layout == NULL) | |
211 | return; | |
212 | inode = mirror->layout->plh_inode; | |
213 | spin_lock(&inode->i_lock); | |
214 | list_del(&mirror->mirrors); | |
215 | spin_unlock(&inode->i_lock); | |
216 | mirror->layout = NULL; | |
217 | } | |
218 | ||
28a0d72c TM |
219 | static struct nfs4_ff_layout_mirror *ff_layout_alloc_mirror(gfp_t gfp_flags) |
220 | { | |
221 | struct nfs4_ff_layout_mirror *mirror; | |
222 | ||
223 | mirror = kzalloc(sizeof(*mirror), gfp_flags); | |
224 | if (mirror != NULL) { | |
225 | spin_lock_init(&mirror->lock); | |
81a090b9 | 226 | refcount_set(&mirror->ref, 1); |
266d12d4 | 227 | INIT_LIST_HEAD(&mirror->mirrors); |
28a0d72c TM |
228 | } |
229 | return mirror; | |
230 | } | |
231 | ||
232 | static void ff_layout_free_mirror(struct nfs4_ff_layout_mirror *mirror) | |
233 | { | |
a52458b4 | 234 | const struct cred *cred; |
3064b686 | 235 | |
266d12d4 | 236 | ff_layout_remove_mirror(mirror); |
28a0d72c | 237 | kfree(mirror->fh_versions); |
3064b686 | 238 | cred = rcu_access_pointer(mirror->ro_cred); |
a52458b4 | 239 | put_cred(cred); |
3064b686 | 240 | cred = rcu_access_pointer(mirror->rw_cred); |
a52458b4 | 241 | put_cred(cred); |
28a0d72c TM |
242 | nfs4_ff_layout_put_deviceid(mirror->mirror_ds); |
243 | kfree(mirror); | |
244 | } | |
245 | ||
246 | static void ff_layout_put_mirror(struct nfs4_ff_layout_mirror *mirror) | |
247 | { | |
81a090b9 | 248 | if (mirror != NULL && refcount_dec_and_test(&mirror->ref)) |
28a0d72c TM |
249 | ff_layout_free_mirror(mirror); |
250 | } | |
251 | ||
d67ae825 TH |
252 | static void ff_layout_free_mirror_array(struct nfs4_ff_layout_segment *fls) |
253 | { | |
329651b1 TM |
254 | u32 i; |
255 | ||
256 | for (i = 0; i < fls->mirror_array_cnt; i++) | |
257 | ff_layout_put_mirror(fls->mirror_array[i]); | |
d67ae825 TH |
258 | } |
259 | ||
d67ae825 TH |
260 | static void _ff_layout_free_lseg(struct nfs4_ff_layout_segment *fls) |
261 | { | |
262 | if (fls) { | |
263 | ff_layout_free_mirror_array(fls); | |
264 | kfree(fls); | |
265 | } | |
266 | } | |
267 | ||
660d1eb2 TM |
268 | static bool |
269 | ff_lseg_match_mirrors(struct pnfs_layout_segment *l1, | |
270 | struct pnfs_layout_segment *l2) | |
271 | { | |
272 | const struct nfs4_ff_layout_segment *fl1 = FF_LAYOUT_LSEG(l1); | |
273 | const struct nfs4_ff_layout_segment *fl2 = FF_LAYOUT_LSEG(l1); | |
274 | u32 i; | |
275 | ||
276 | if (fl1->mirror_array_cnt != fl2->mirror_array_cnt) | |
277 | return false; | |
278 | for (i = 0; i < fl1->mirror_array_cnt; i++) { | |
279 | if (fl1->mirror_array[i] != fl2->mirror_array[i]) | |
280 | return false; | |
281 | } | |
282 | return true; | |
283 | } | |
284 | ||
0762ed2c TM |
285 | static bool |
286 | ff_lseg_range_is_after(const struct pnfs_layout_range *l1, | |
287 | const struct pnfs_layout_range *l2) | |
288 | { | |
289 | u64 end1, end2; | |
290 | ||
291 | if (l1->iomode != l2->iomode) | |
292 | return l1->iomode != IOMODE_READ; | |
293 | end1 = pnfs_calc_offset_end(l1->offset, l1->length); | |
294 | end2 = pnfs_calc_offset_end(l2->offset, l2->length); | |
295 | if (end1 < l2->offset) | |
296 | return false; | |
297 | if (end2 < l1->offset) | |
298 | return true; | |
299 | return l2->offset <= l1->offset; | |
300 | } | |
301 | ||
302 | static bool | |
303 | ff_lseg_merge(struct pnfs_layout_segment *new, | |
304 | struct pnfs_layout_segment *old) | |
305 | { | |
306 | u64 new_end, old_end; | |
307 | ||
ee26bdd6 JL |
308 | if (test_bit(NFS_LSEG_LAYOUTRETURN, &old->pls_flags)) |
309 | return false; | |
0762ed2c TM |
310 | if (new->pls_range.iomode != old->pls_range.iomode) |
311 | return false; | |
312 | old_end = pnfs_calc_offset_end(old->pls_range.offset, | |
313 | old->pls_range.length); | |
314 | if (old_end < new->pls_range.offset) | |
315 | return false; | |
316 | new_end = pnfs_calc_offset_end(new->pls_range.offset, | |
317 | new->pls_range.length); | |
318 | if (new_end < old->pls_range.offset) | |
319 | return false; | |
660d1eb2 TM |
320 | if (!ff_lseg_match_mirrors(new, old)) |
321 | return false; | |
0762ed2c TM |
322 | |
323 | /* Mergeable: copy info from 'old' to 'new' */ | |
324 | if (new_end < old_end) | |
325 | new_end = old_end; | |
326 | if (new->pls_range.offset < old->pls_range.offset) | |
327 | new->pls_range.offset = old->pls_range.offset; | |
328 | new->pls_range.length = pnfs_calc_offset_length(new->pls_range.offset, | |
329 | new_end); | |
330 | if (test_bit(NFS_LSEG_ROC, &old->pls_flags)) | |
331 | set_bit(NFS_LSEG_ROC, &new->pls_flags); | |
0762ed2c TM |
332 | return true; |
333 | } | |
334 | ||
335 | static void | |
336 | ff_layout_add_lseg(struct pnfs_layout_hdr *lo, | |
337 | struct pnfs_layout_segment *lseg, | |
338 | struct list_head *free_me) | |
339 | { | |
340 | pnfs_generic_layout_insert_lseg(lo, lseg, | |
341 | ff_lseg_range_is_after, | |
342 | ff_lseg_merge, | |
343 | free_me); | |
344 | } | |
345 | ||
d67ae825 TH |
346 | static void ff_layout_sort_mirrors(struct nfs4_ff_layout_segment *fls) |
347 | { | |
d67ae825 TH |
348 | int i, j; |
349 | ||
350 | for (i = 0; i < fls->mirror_array_cnt - 1; i++) { | |
351 | for (j = i + 1; j < fls->mirror_array_cnt; j++) | |
352 | if (fls->mirror_array[i]->efficiency < | |
455b6ee6 FF |
353 | fls->mirror_array[j]->efficiency) |
354 | swap(fls->mirror_array[i], | |
355 | fls->mirror_array[j]); | |
d67ae825 TH |
356 | } |
357 | } | |
358 | ||
359 | static struct pnfs_layout_segment * | |
360 | ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, | |
361 | struct nfs4_layoutget_res *lgr, | |
362 | gfp_t gfp_flags) | |
363 | { | |
364 | struct pnfs_layout_segment *ret; | |
365 | struct nfs4_ff_layout_segment *fls = NULL; | |
366 | struct xdr_stream stream; | |
367 | struct xdr_buf buf; | |
368 | struct page *scratch; | |
369 | u64 stripe_unit; | |
370 | u32 mirror_array_cnt; | |
371 | __be32 *p; | |
372 | int i, rc; | |
373 | ||
374 | dprintk("--> %s\n", __func__); | |
375 | scratch = alloc_page(gfp_flags); | |
376 | if (!scratch) | |
377 | return ERR_PTR(-ENOMEM); | |
378 | ||
379 | xdr_init_decode_pages(&stream, &buf, lgr->layoutp->pages, | |
380 | lgr->layoutp->len); | |
381 | xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE); | |
382 | ||
383 | /* stripe unit and mirror_array_cnt */ | |
384 | rc = -EIO; | |
385 | p = xdr_inline_decode(&stream, 8 + 4); | |
386 | if (!p) | |
387 | goto out_err_free; | |
388 | ||
389 | p = xdr_decode_hyper(p, &stripe_unit); | |
390 | mirror_array_cnt = be32_to_cpup(p++); | |
391 | dprintk("%s: stripe_unit=%llu mirror_array_cnt=%u\n", __func__, | |
392 | stripe_unit, mirror_array_cnt); | |
393 | ||
394 | if (mirror_array_cnt > NFS4_FLEXFILE_LAYOUT_MAX_MIRROR_CNT || | |
395 | mirror_array_cnt == 0) | |
396 | goto out_err_free; | |
397 | ||
398 | rc = -ENOMEM; | |
329651b1 TM |
399 | fls = kzalloc(struct_size(fls, mirror_array, mirror_array_cnt), |
400 | gfp_flags); | |
d67ae825 TH |
401 | if (!fls) |
402 | goto out_err_free; | |
403 | ||
404 | fls->mirror_array_cnt = mirror_array_cnt; | |
405 | fls->stripe_unit = stripe_unit; | |
d67ae825 TH |
406 | |
407 | for (i = 0; i < fls->mirror_array_cnt; i++) { | |
266d12d4 | 408 | struct nfs4_ff_layout_mirror *mirror; |
97f68c6b | 409 | struct cred *kcred; |
762bb7e9 | 410 | const struct cred __rcu *cred; |
8276c902 N |
411 | kuid_t uid; |
412 | kgid_t gid; | |
90a0be00 | 413 | u32 ds_count, fh_count, id; |
d67ae825 TH |
414 | int j; |
415 | ||
416 | rc = -EIO; | |
417 | p = xdr_inline_decode(&stream, 4); | |
418 | if (!p) | |
419 | goto out_err_free; | |
420 | ds_count = be32_to_cpup(p); | |
421 | ||
422 | /* FIXME: allow for striping? */ | |
423 | if (ds_count != 1) | |
424 | goto out_err_free; | |
425 | ||
28a0d72c | 426 | fls->mirror_array[i] = ff_layout_alloc_mirror(gfp_flags); |
d67ae825 TH |
427 | if (fls->mirror_array[i] == NULL) { |
428 | rc = -ENOMEM; | |
429 | goto out_err_free; | |
430 | } | |
431 | ||
d67ae825 TH |
432 | fls->mirror_array[i]->ds_count = ds_count; |
433 | ||
434 | /* deviceid */ | |
65990d1a | 435 | rc = decode_deviceid(&stream, &fls->mirror_array[i]->devid); |
d67ae825 TH |
436 | if (rc) |
437 | goto out_err_free; | |
438 | ||
d67ae825 TH |
439 | /* efficiency */ |
440 | rc = -EIO; | |
441 | p = xdr_inline_decode(&stream, 4); | |
442 | if (!p) | |
443 | goto out_err_free; | |
444 | fls->mirror_array[i]->efficiency = be32_to_cpup(p); | |
445 | ||
446 | /* stateid */ | |
93b717fd | 447 | rc = decode_pnfs_stateid(&stream, &fls->mirror_array[i]->stateid); |
d67ae825 TH |
448 | if (rc) |
449 | goto out_err_free; | |
450 | ||
451 | /* fh */ | |
662f9a10 | 452 | rc = -EIO; |
d67ae825 TH |
453 | p = xdr_inline_decode(&stream, 4); |
454 | if (!p) | |
455 | goto out_err_free; | |
456 | fh_count = be32_to_cpup(p); | |
457 | ||
458 | fls->mirror_array[i]->fh_versions = | |
6396bb22 | 459 | kcalloc(fh_count, sizeof(struct nfs_fh), |
d67ae825 TH |
460 | gfp_flags); |
461 | if (fls->mirror_array[i]->fh_versions == NULL) { | |
462 | rc = -ENOMEM; | |
463 | goto out_err_free; | |
464 | } | |
465 | ||
466 | for (j = 0; j < fh_count; j++) { | |
467 | rc = decode_nfs_fh(&stream, | |
468 | &fls->mirror_array[i]->fh_versions[j]); | |
469 | if (rc) | |
470 | goto out_err_free; | |
471 | } | |
472 | ||
473 | fls->mirror_array[i]->fh_versions_cnt = fh_count; | |
474 | ||
475 | /* user */ | |
90a0be00 | 476 | rc = decode_name(&stream, &id); |
d67ae825 TH |
477 | if (rc) |
478 | goto out_err_free; | |
479 | ||
8276c902 | 480 | uid = make_kuid(&init_user_ns, id); |
90a0be00 | 481 | |
d67ae825 | 482 | /* group */ |
90a0be00 | 483 | rc = decode_name(&stream, &id); |
d67ae825 TH |
484 | if (rc) |
485 | goto out_err_free; | |
486 | ||
8276c902 | 487 | gid = make_kgid(&init_user_ns, id); |
90a0be00 | 488 | |
97f68c6b N |
489 | if (gfp_flags & __GFP_FS) |
490 | kcred = prepare_kernel_cred(NULL); | |
491 | else { | |
492 | unsigned int nofs_flags = memalloc_nofs_save(); | |
493 | kcred = prepare_kernel_cred(NULL); | |
494 | memalloc_nofs_restore(nofs_flags); | |
495 | } | |
496 | rc = -ENOMEM; | |
497 | if (!kcred) | |
498 | goto out_err_free; | |
8276c902 N |
499 | kcred->fsuid = uid; |
500 | kcred->fsgid = gid; | |
762bb7e9 | 501 | cred = RCU_INITIALIZER(kcred); |
90a0be00 | 502 | |
3064b686 JL |
503 | if (lgr->range.iomode == IOMODE_READ) |
504 | rcu_assign_pointer(fls->mirror_array[i]->ro_cred, cred); | |
505 | else | |
506 | rcu_assign_pointer(fls->mirror_array[i]->rw_cred, cred); | |
90a0be00 | 507 | |
266d12d4 TM |
508 | mirror = ff_layout_add_mirror(lh, fls->mirror_array[i]); |
509 | if (mirror != fls->mirror_array[i]) { | |
90a0be00 | 510 | /* swap cred ptrs so free_mirror will clean up old */ |
3064b686 JL |
511 | if (lgr->range.iomode == IOMODE_READ) { |
512 | cred = xchg(&mirror->ro_cred, cred); | |
513 | rcu_assign_pointer(fls->mirror_array[i]->ro_cred, cred); | |
514 | } else { | |
515 | cred = xchg(&mirror->rw_cred, cred); | |
516 | rcu_assign_pointer(fls->mirror_array[i]->rw_cred, cred); | |
517 | } | |
266d12d4 TM |
518 | ff_layout_free_mirror(fls->mirror_array[i]); |
519 | fls->mirror_array[i] = mirror; | |
520 | } | |
521 | ||
3064b686 JL |
522 | dprintk("%s: iomode %s uid %u gid %u\n", __func__, |
523 | lgr->range.iomode == IOMODE_READ ? "READ" : "RW", | |
8276c902 N |
524 | from_kuid(&init_user_ns, uid), |
525 | from_kgid(&init_user_ns, gid)); | |
d67ae825 TH |
526 | } |
527 | ||
c0f5f505 | 528 | p = xdr_inline_decode(&stream, 4); |
d0379a5d TM |
529 | if (!p) |
530 | goto out_sort_mirrors; | |
531 | fls->flags = be32_to_cpup(p); | |
532 | ||
533 | p = xdr_inline_decode(&stream, 4); | |
534 | if (!p) | |
535 | goto out_sort_mirrors; | |
536 | for (i=0; i < fls->mirror_array_cnt; i++) | |
537 | fls->mirror_array[i]->report_interval = be32_to_cpup(p); | |
c0f5f505 | 538 | |
d0379a5d | 539 | out_sort_mirrors: |
d67ae825 | 540 | ff_layout_sort_mirrors(fls); |
d67ae825 TH |
541 | ret = &fls->generic_hdr; |
542 | dprintk("<-- %s (success)\n", __func__); | |
543 | out_free_page: | |
544 | __free_page(scratch); | |
545 | return ret; | |
546 | out_err_free: | |
547 | _ff_layout_free_lseg(fls); | |
548 | ret = ERR_PTR(rc); | |
549 | dprintk("<-- %s (%d)\n", __func__, rc); | |
550 | goto out_free_page; | |
551 | } | |
552 | ||
d67ae825 TH |
553 | static void |
554 | ff_layout_free_lseg(struct pnfs_layout_segment *lseg) | |
555 | { | |
556 | struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); | |
d67ae825 TH |
557 | |
558 | dprintk("--> %s\n", __func__); | |
559 | ||
d67ae825 TH |
560 | if (lseg->pls_range.iomode == IOMODE_RW) { |
561 | struct nfs4_flexfile_layout *ffl; | |
562 | struct inode *inode; | |
563 | ||
564 | ffl = FF_LAYOUT_FROM_HDR(lseg->pls_layout); | |
565 | inode = ffl->generic_hdr.plh_inode; | |
566 | spin_lock(&inode->i_lock); | |
a9901899 | 567 | pnfs_generic_ds_cinfo_release_lseg(&ffl->commit_info, lseg); |
d67ae825 TH |
568 | spin_unlock(&inode->i_lock); |
569 | } | |
570 | _ff_layout_free_lseg(fls); | |
571 | } | |
572 | ||
abcb7bfc | 573 | static void |
e76d28dd | 574 | nfs4_ff_start_busy_timer(struct nfs4_ff_busy_timer *timer, ktime_t now) |
abcb7bfc | 575 | { |
9bbd9bb4 PT |
576 | /* first IO request? */ |
577 | if (atomic_inc_return(&timer->n_ops) == 1) { | |
e76d28dd | 578 | timer->start_time = now; |
abcb7bfc TM |
579 | } |
580 | } | |
581 | ||
582 | static ktime_t | |
e76d28dd | 583 | nfs4_ff_end_busy_timer(struct nfs4_ff_busy_timer *timer, ktime_t now) |
abcb7bfc | 584 | { |
e76d28dd | 585 | ktime_t start; |
abcb7bfc | 586 | |
9bbd9bb4 PT |
587 | if (atomic_dec_return(&timer->n_ops) < 0) |
588 | WARN_ON_ONCE(1); | |
589 | ||
9bbd9bb4 PT |
590 | start = timer->start_time; |
591 | timer->start_time = now; | |
abcb7bfc TM |
592 | return ktime_sub(now, start); |
593 | } | |
594 | ||
97ba375b | 595 | static bool |
d983803d | 596 | nfs4_ff_layoutstat_start_io(struct nfs4_ff_layout_mirror *mirror, |
e76d28dd TM |
597 | struct nfs4_ff_layoutstat *layoutstat, |
598 | ktime_t now) | |
abcb7bfc | 599 | { |
bbf58bf3 | 600 | s64 report_interval = FF_LAYOUTSTATS_REPORT_INTERVAL; |
1c8d477a | 601 | struct nfs4_flexfile_layout *ffl = FF_LAYOUT_FROM_HDR(mirror->layout); |
d983803d | 602 | |
e76d28dd | 603 | nfs4_ff_start_busy_timer(&layoutstat->busy_timer, now); |
1f3a8e49 | 604 | if (!mirror->start_time) |
9bbd9bb4 | 605 | mirror->start_time = now; |
d0379a5d TM |
606 | if (mirror->report_interval != 0) |
607 | report_interval = (s64)mirror->report_interval * 1000LL; | |
608 | else if (layoutstats_timer != 0) | |
bbf58bf3 | 609 | report_interval = (s64)layoutstats_timer * 1000LL; |
1c8d477a | 610 | if (ktime_to_ms(ktime_sub(now, ffl->last_report_time)) >= |
bbf58bf3 | 611 | report_interval) { |
1c8d477a | 612 | ffl->last_report_time = now; |
97ba375b PT |
613 | return true; |
614 | } | |
615 | ||
616 | return false; | |
abcb7bfc TM |
617 | } |
618 | ||
619 | static void | |
620 | nfs4_ff_layout_stat_io_update_requested(struct nfs4_ff_layoutstat *layoutstat, | |
621 | __u64 requested) | |
622 | { | |
623 | struct nfs4_ff_io_stat *iostat = &layoutstat->io_stat; | |
624 | ||
625 | iostat->ops_requested++; | |
626 | iostat->bytes_requested += requested; | |
627 | } | |
628 | ||
629 | static void | |
630 | nfs4_ff_layout_stat_io_update_completed(struct nfs4_ff_layoutstat *layoutstat, | |
631 | __u64 requested, | |
632 | __u64 completed, | |
e76d28dd TM |
633 | ktime_t time_completed, |
634 | ktime_t time_started) | |
abcb7bfc TM |
635 | { |
636 | struct nfs4_ff_io_stat *iostat = &layoutstat->io_stat; | |
e76d28dd | 637 | ktime_t completion_time = ktime_sub(time_completed, time_started); |
abcb7bfc TM |
638 | ktime_t timer; |
639 | ||
640 | iostat->ops_completed++; | |
641 | iostat->bytes_completed += completed; | |
642 | iostat->bytes_not_delivered += requested - completed; | |
643 | ||
e76d28dd | 644 | timer = nfs4_ff_end_busy_timer(&layoutstat->busy_timer, time_completed); |
abcb7bfc TM |
645 | iostat->total_busy_time = |
646 | ktime_add(iostat->total_busy_time, timer); | |
647 | iostat->aggregate_completion_time = | |
e76d28dd TM |
648 | ktime_add(iostat->aggregate_completion_time, |
649 | completion_time); | |
abcb7bfc TM |
650 | } |
651 | ||
652 | static void | |
0b7baf94 TM |
653 | nfs4_ff_layout_stat_io_start_read(struct inode *inode, |
654 | struct nfs4_ff_layout_mirror *mirror, | |
e76d28dd | 655 | __u64 requested, ktime_t now) |
abcb7bfc | 656 | { |
97ba375b PT |
657 | bool report; |
658 | ||
abcb7bfc | 659 | spin_lock(&mirror->lock); |
e76d28dd | 660 | report = nfs4_ff_layoutstat_start_io(mirror, &mirror->read_stat, now); |
abcb7bfc | 661 | nfs4_ff_layout_stat_io_update_requested(&mirror->read_stat, requested); |
06946c6a | 662 | set_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags); |
abcb7bfc | 663 | spin_unlock(&mirror->lock); |
97ba375b PT |
664 | |
665 | if (report) | |
0b7baf94 | 666 | pnfs_report_layoutstat(inode, GFP_KERNEL); |
abcb7bfc TM |
667 | } |
668 | ||
669 | static void | |
670 | nfs4_ff_layout_stat_io_end_read(struct rpc_task *task, | |
671 | struct nfs4_ff_layout_mirror *mirror, | |
672 | __u64 requested, | |
673 | __u64 completed) | |
674 | { | |
675 | spin_lock(&mirror->lock); | |
676 | nfs4_ff_layout_stat_io_update_completed(&mirror->read_stat, | |
677 | requested, completed, | |
e76d28dd | 678 | ktime_get(), task->tk_start); |
06946c6a | 679 | set_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags); |
abcb7bfc TM |
680 | spin_unlock(&mirror->lock); |
681 | } | |
682 | ||
683 | static void | |
0b7baf94 TM |
684 | nfs4_ff_layout_stat_io_start_write(struct inode *inode, |
685 | struct nfs4_ff_layout_mirror *mirror, | |
e76d28dd | 686 | __u64 requested, ktime_t now) |
abcb7bfc | 687 | { |
97ba375b PT |
688 | bool report; |
689 | ||
abcb7bfc | 690 | spin_lock(&mirror->lock); |
e76d28dd | 691 | report = nfs4_ff_layoutstat_start_io(mirror , &mirror->write_stat, now); |
abcb7bfc | 692 | nfs4_ff_layout_stat_io_update_requested(&mirror->write_stat, requested); |
06946c6a | 693 | set_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags); |
abcb7bfc | 694 | spin_unlock(&mirror->lock); |
97ba375b PT |
695 | |
696 | if (report) | |
0b7baf94 | 697 | pnfs_report_layoutstat(inode, GFP_NOIO); |
abcb7bfc TM |
698 | } |
699 | ||
700 | static void | |
701 | nfs4_ff_layout_stat_io_end_write(struct rpc_task *task, | |
702 | struct nfs4_ff_layout_mirror *mirror, | |
703 | __u64 requested, | |
704 | __u64 completed, | |
705 | enum nfs3_stable_how committed) | |
706 | { | |
707 | if (committed == NFS_UNSTABLE) | |
708 | requested = completed = 0; | |
709 | ||
710 | spin_lock(&mirror->lock); | |
711 | nfs4_ff_layout_stat_io_update_completed(&mirror->write_stat, | |
e76d28dd | 712 | requested, completed, ktime_get(), task->tk_start); |
06946c6a | 713 | set_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags); |
abcb7bfc TM |
714 | spin_unlock(&mirror->lock); |
715 | } | |
716 | ||
76c66905 TM |
717 | static void |
718 | ff_layout_mark_ds_unreachable(struct pnfs_layout_segment *lseg, int idx) | |
719 | { | |
720 | struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); | |
721 | ||
722 | if (devid) | |
723 | nfs4_mark_deviceid_unavailable(devid); | |
724 | } | |
725 | ||
726 | static void | |
727 | ff_layout_mark_ds_reachable(struct pnfs_layout_segment *lseg, int idx) | |
728 | { | |
729 | struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); | |
730 | ||
731 | if (devid) | |
732 | nfs4_mark_deviceid_available(devid); | |
733 | } | |
734 | ||
d67ae825 | 735 | static struct nfs4_pnfs_ds * |
76c66905 TM |
736 | ff_layout_choose_ds_for_read(struct pnfs_layout_segment *lseg, |
737 | int start_idx, int *best_idx, | |
738 | bool check_device) | |
d67ae825 | 739 | { |
13544412 | 740 | struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); |
2444ff27 | 741 | struct nfs4_ff_layout_mirror *mirror; |
d67ae825 | 742 | struct nfs4_pnfs_ds *ds; |
3dc14735 | 743 | bool fail_return = false; |
d67ae825 TH |
744 | int idx; |
745 | ||
76c66905 | 746 | /* mirrors are initially sorted by efficiency */ |
13544412 | 747 | for (idx = start_idx; idx < fls->mirror_array_cnt; idx++) { |
3dc14735 | 748 | if (idx+1 == fls->mirror_array_cnt) |
76c66905 | 749 | fail_return = !check_device; |
2444ff27 TM |
750 | |
751 | mirror = FF_LAYOUT_COMP(lseg, idx); | |
76c66905 TM |
752 | ds = nfs4_ff_layout_prepare_ds(lseg, mirror, fail_return); |
753 | if (!ds) | |
2444ff27 TM |
754 | continue; |
755 | ||
76c66905 TM |
756 | if (check_device && |
757 | nfs4_test_deviceid_unavailable(&mirror->mirror_ds->id_node)) | |
758 | continue; | |
759 | ||
760 | *best_idx = idx; | |
761 | return ds; | |
d67ae825 TH |
762 | } |
763 | ||
764 | return NULL; | |
765 | } | |
766 | ||
76c66905 TM |
767 | static struct nfs4_pnfs_ds * |
768 | ff_layout_choose_any_ds_for_read(struct pnfs_layout_segment *lseg, | |
769 | int start_idx, int *best_idx) | |
770 | { | |
771 | return ff_layout_choose_ds_for_read(lseg, start_idx, best_idx, false); | |
772 | } | |
773 | ||
774 | static struct nfs4_pnfs_ds * | |
775 | ff_layout_choose_valid_ds_for_read(struct pnfs_layout_segment *lseg, | |
776 | int start_idx, int *best_idx) | |
777 | { | |
778 | return ff_layout_choose_ds_for_read(lseg, start_idx, best_idx, true); | |
779 | } | |
780 | ||
781 | static struct nfs4_pnfs_ds * | |
782 | ff_layout_choose_best_ds_for_read(struct pnfs_layout_segment *lseg, | |
783 | int start_idx, int *best_idx) | |
784 | { | |
785 | struct nfs4_pnfs_ds *ds; | |
786 | ||
787 | ds = ff_layout_choose_valid_ds_for_read(lseg, start_idx, best_idx); | |
788 | if (ds) | |
789 | return ds; | |
790 | return ff_layout_choose_any_ds_for_read(lseg, start_idx, best_idx); | |
791 | } | |
792 | ||
563c53e7 TM |
793 | static struct nfs4_pnfs_ds * |
794 | ff_layout_get_ds_for_read(struct nfs_pageio_descriptor *pgio, int *best_idx) | |
795 | { | |
796 | struct pnfs_layout_segment *lseg = pgio->pg_lseg; | |
797 | struct nfs4_pnfs_ds *ds; | |
798 | ||
799 | ds = ff_layout_choose_best_ds_for_read(lseg, pgio->pg_mirror_idx, | |
800 | best_idx); | |
801 | if (ds || !pgio->pg_mirror_idx) | |
802 | return ds; | |
803 | return ff_layout_choose_best_ds_for_read(lseg, 0, best_idx); | |
804 | } | |
805 | ||
c7d73af2 TH |
806 | static void |
807 | ff_layout_pg_get_read(struct nfs_pageio_descriptor *pgio, | |
808 | struct nfs_page *req, | |
809 | bool strict_iomode) | |
810 | { | |
c7d73af2 TH |
811 | pnfs_put_lseg(pgio->pg_lseg); |
812 | pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, | |
9fcd5960 | 813 | nfs_req_openctx(req), |
cbd7be43 TM |
814 | req_offset(req), |
815 | req->wb_bytes, | |
c7d73af2 TH |
816 | IOMODE_READ, |
817 | strict_iomode, | |
818 | GFP_KERNEL); | |
819 | if (IS_ERR(pgio->pg_lseg)) { | |
820 | pgio->pg_error = PTR_ERR(pgio->pg_lseg); | |
821 | pgio->pg_lseg = NULL; | |
822 | } | |
c7d73af2 TH |
823 | } |
824 | ||
e1e54ab7 TM |
825 | static void |
826 | ff_layout_pg_check_layout(struct nfs_pageio_descriptor *pgio, | |
827 | struct nfs_page *req) | |
828 | { | |
829 | pnfs_generic_pg_check_layout(pgio); | |
830 | pnfs_generic_pg_check_range(pgio, req); | |
831 | } | |
832 | ||
d67ae825 TH |
833 | static void |
834 | ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio, | |
835 | struct nfs_page *req) | |
836 | { | |
837 | struct nfs_pgio_mirror *pgm; | |
838 | struct nfs4_ff_layout_mirror *mirror; | |
839 | struct nfs4_pnfs_ds *ds; | |
840 | int ds_idx; | |
841 | ||
3dc14735 | 842 | retry: |
e1e54ab7 | 843 | ff_layout_pg_check_layout(pgio, req); |
d67ae825 | 844 | /* Use full layout for now */ |
1c1aeaf1 | 845 | if (!pgio->pg_lseg) { |
c7d73af2 | 846 | ff_layout_pg_get_read(pgio, req, false); |
1c1aeaf1 TM |
847 | if (!pgio->pg_lseg) |
848 | goto out_nolseg; | |
849 | } | |
850 | if (ff_layout_avoid_read_on_rw(pgio->pg_lseg)) { | |
c7d73af2 | 851 | ff_layout_pg_get_read(pgio, req, true); |
1c1aeaf1 TM |
852 | if (!pgio->pg_lseg) |
853 | goto out_nolseg; | |
854 | } | |
d67ae825 | 855 | |
563c53e7 | 856 | ds = ff_layout_get_ds_for_read(pgio, &ds_idx); |
446ca219 | 857 | if (!ds) { |
3dc14735 | 858 | if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg)) |
446ca219 | 859 | goto out_mds; |
f97ff92b | 860 | pnfs_generic_pg_cleanup(pgio); |
3dc14735 TM |
861 | /* Sleep for 1 second before retrying */ |
862 | ssleep(1); | |
863 | goto retry; | |
446ca219 TH |
864 | } |
865 | ||
d67ae825 TH |
866 | mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx); |
867 | ||
868 | pgio->pg_mirror_idx = ds_idx; | |
869 | ||
870 | /* read always uses only one mirror - idx 0 for pgio layer */ | |
871 | pgm = &pgio->pg_mirrors[0]; | |
872 | pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize; | |
873 | ||
7af46292 TM |
874 | if (NFS_SERVER(pgio->pg_inode)->flags & |
875 | (NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR)) | |
876 | pgio->pg_maxretrans = io_maxretrans; | |
d67ae825 | 877 | return; |
1c1aeaf1 TM |
878 | out_nolseg: |
879 | if (pgio->pg_error < 0) | |
880 | return; | |
d67ae825 | 881 | out_mds: |
d5b9216f TM |
882 | trace_pnfs_mds_fallback_pg_init_read(pgio->pg_inode, |
883 | 0, NFS4_MAX_UINT64, IOMODE_READ, | |
884 | NFS_I(pgio->pg_inode)->layout, | |
885 | pgio->pg_lseg); | |
7af46292 | 886 | pgio->pg_maxretrans = 0; |
d67ae825 TH |
887 | nfs_pageio_reset_read_mds(pgio); |
888 | } | |
889 | ||
890 | static void | |
891 | ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio, | |
892 | struct nfs_page *req) | |
893 | { | |
894 | struct nfs4_ff_layout_mirror *mirror; | |
895 | struct nfs_pgio_mirror *pgm; | |
d67ae825 TH |
896 | struct nfs4_pnfs_ds *ds; |
897 | int i; | |
d67ae825 | 898 | |
3dc14735 | 899 | retry: |
e1e54ab7 | 900 | ff_layout_pg_check_layout(pgio, req); |
d600ad1f | 901 | if (!pgio->pg_lseg) { |
d67ae825 | 902 | pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, |
9fcd5960 | 903 | nfs_req_openctx(req), |
cbd7be43 TM |
904 | req_offset(req), |
905 | req->wb_bytes, | |
d67ae825 | 906 | IOMODE_RW, |
c7d73af2 | 907 | false, |
d67ae825 | 908 | GFP_NOFS); |
d600ad1f PT |
909 | if (IS_ERR(pgio->pg_lseg)) { |
910 | pgio->pg_error = PTR_ERR(pgio->pg_lseg); | |
911 | pgio->pg_lseg = NULL; | |
912 | return; | |
913 | } | |
914 | } | |
d67ae825 TH |
915 | /* If no lseg, fall back to write through mds */ |
916 | if (pgio->pg_lseg == NULL) | |
917 | goto out_mds; | |
918 | ||
d67ae825 | 919 | /* Use a direct mapping of ds_idx to pgio mirror_idx */ |
8b040137 TM |
920 | if (pgio->pg_mirror_count != FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg)) |
921 | goto out_eagain; | |
d67ae825 TH |
922 | |
923 | for (i = 0; i < pgio->pg_mirror_count; i++) { | |
2444ff27 | 924 | mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i); |
2444ff27 | 925 | ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, mirror, true); |
446ca219 | 926 | if (!ds) { |
3dc14735 | 927 | if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg)) |
446ca219 | 928 | goto out_mds; |
f97ff92b | 929 | pnfs_generic_pg_cleanup(pgio); |
3dc14735 TM |
930 | /* Sleep for 1 second before retrying */ |
931 | ssleep(1); | |
932 | goto retry; | |
446ca219 | 933 | } |
d67ae825 | 934 | pgm = &pgio->pg_mirrors[i]; |
d67ae825 TH |
935 | pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].wsize; |
936 | } | |
937 | ||
7af46292 TM |
938 | if (NFS_SERVER(pgio->pg_inode)->flags & |
939 | (NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR)) | |
940 | pgio->pg_maxretrans = io_maxretrans; | |
d67ae825 | 941 | return; |
8b040137 TM |
942 | out_eagain: |
943 | pnfs_generic_pg_cleanup(pgio); | |
944 | pgio->pg_error = -EAGAIN; | |
945 | return; | |
d67ae825 | 946 | out_mds: |
d5b9216f TM |
947 | trace_pnfs_mds_fallback_pg_init_write(pgio->pg_inode, |
948 | 0, NFS4_MAX_UINT64, IOMODE_RW, | |
949 | NFS_I(pgio->pg_inode)->layout, | |
950 | pgio->pg_lseg); | |
7af46292 | 951 | pgio->pg_maxretrans = 0; |
d67ae825 | 952 | nfs_pageio_reset_write_mds(pgio); |
8b040137 | 953 | pgio->pg_error = -EAGAIN; |
d67ae825 TH |
954 | } |
955 | ||
956 | static unsigned int | |
957 | ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio, | |
958 | struct nfs_page *req) | |
959 | { | |
d600ad1f | 960 | if (!pgio->pg_lseg) { |
d67ae825 | 961 | pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, |
9fcd5960 | 962 | nfs_req_openctx(req), |
18eb87f4 TM |
963 | req_offset(req), |
964 | req->wb_bytes, | |
d67ae825 | 965 | IOMODE_RW, |
c7d73af2 | 966 | false, |
d67ae825 | 967 | GFP_NOFS); |
d600ad1f PT |
968 | if (IS_ERR(pgio->pg_lseg)) { |
969 | pgio->pg_error = PTR_ERR(pgio->pg_lseg); | |
970 | pgio->pg_lseg = NULL; | |
971 | goto out; | |
972 | } | |
973 | } | |
d67ae825 TH |
974 | if (pgio->pg_lseg) |
975 | return FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg); | |
976 | ||
d5b9216f TM |
977 | trace_pnfs_mds_fallback_pg_get_mirror_count(pgio->pg_inode, |
978 | 0, NFS4_MAX_UINT64, IOMODE_RW, | |
979 | NFS_I(pgio->pg_inode)->layout, | |
980 | pgio->pg_lseg); | |
d67ae825 | 981 | /* no lseg means that pnfs is not in use, so no mirroring here */ |
d67ae825 | 982 | nfs_pageio_reset_write_mds(pgio); |
d600ad1f | 983 | out: |
d67ae825 TH |
984 | return 1; |
985 | } | |
986 | ||
987 | static const struct nfs_pageio_ops ff_layout_pg_read_ops = { | |
988 | .pg_init = ff_layout_pg_init_read, | |
989 | .pg_test = pnfs_generic_pg_test, | |
990 | .pg_doio = pnfs_generic_pg_readpages, | |
991 | .pg_cleanup = pnfs_generic_pg_cleanup, | |
992 | }; | |
993 | ||
994 | static const struct nfs_pageio_ops ff_layout_pg_write_ops = { | |
995 | .pg_init = ff_layout_pg_init_write, | |
996 | .pg_test = pnfs_generic_pg_test, | |
997 | .pg_doio = pnfs_generic_pg_writepages, | |
998 | .pg_get_mirror_count = ff_layout_pg_get_mirror_count_write, | |
999 | .pg_cleanup = pnfs_generic_pg_cleanup, | |
1000 | }; | |
1001 | ||
1002 | static void ff_layout_reset_write(struct nfs_pgio_header *hdr, bool retry_pnfs) | |
1003 | { | |
1004 | struct rpc_task *task = &hdr->task; | |
1005 | ||
1006 | pnfs_layoutcommit_inode(hdr->inode, false); | |
1007 | ||
1008 | if (retry_pnfs) { | |
1009 | dprintk("%s Reset task %5u for i/o through pNFS " | |
1010 | "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, | |
1011 | hdr->task.tk_pid, | |
1012 | hdr->inode->i_sb->s_id, | |
1013 | (unsigned long long)NFS_FILEID(hdr->inode), | |
1014 | hdr->args.count, | |
1015 | (unsigned long long)hdr->args.offset); | |
1016 | ||
dc602dd7 | 1017 | hdr->completion_ops->reschedule_io(hdr); |
d67ae825 TH |
1018 | return; |
1019 | } | |
1020 | ||
1021 | if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { | |
1022 | dprintk("%s Reset task %5u for i/o through MDS " | |
1023 | "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, | |
1024 | hdr->task.tk_pid, | |
1025 | hdr->inode->i_sb->s_id, | |
1026 | (unsigned long long)NFS_FILEID(hdr->inode), | |
1027 | hdr->args.count, | |
1028 | (unsigned long long)hdr->args.offset); | |
1029 | ||
d5b9216f TM |
1030 | trace_pnfs_mds_fallback_write_done(hdr->inode, |
1031 | hdr->args.offset, hdr->args.count, | |
1032 | IOMODE_RW, NFS_I(hdr->inode)->layout, | |
1033 | hdr->lseg); | |
d67ae825 TH |
1034 | task->tk_status = pnfs_write_done_resend_to_mds(hdr); |
1035 | } | |
1036 | } | |
1037 | ||
563c53e7 TM |
1038 | static void ff_layout_resend_pnfs_read(struct nfs_pgio_header *hdr) |
1039 | { | |
1040 | u32 idx = hdr->pgio_mirror_idx + 1; | |
1041 | int new_idx = 0; | |
1042 | ||
1043 | if (ff_layout_choose_any_ds_for_read(hdr->lseg, idx + 1, &new_idx)) | |
1044 | ff_layout_send_layouterror(hdr->lseg); | |
1045 | else | |
1046 | pnfs_error_mark_layout_for_return(hdr->inode, hdr->lseg); | |
1047 | pnfs_read_resend_pnfs(hdr, new_idx); | |
1048 | } | |
1049 | ||
d67ae825 TH |
1050 | static void ff_layout_reset_read(struct nfs_pgio_header *hdr) |
1051 | { | |
1052 | struct rpc_task *task = &hdr->task; | |
1053 | ||
1054 | pnfs_layoutcommit_inode(hdr->inode, false); | |
563c53e7 | 1055 | pnfs_error_mark_layout_for_return(hdr->inode, hdr->lseg); |
d67ae825 TH |
1056 | |
1057 | if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { | |
1058 | dprintk("%s Reset task %5u for i/o through MDS " | |
1059 | "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, | |
1060 | hdr->task.tk_pid, | |
1061 | hdr->inode->i_sb->s_id, | |
1062 | (unsigned long long)NFS_FILEID(hdr->inode), | |
1063 | hdr->args.count, | |
1064 | (unsigned long long)hdr->args.offset); | |
1065 | ||
d5b9216f TM |
1066 | trace_pnfs_mds_fallback_read_done(hdr->inode, |
1067 | hdr->args.offset, hdr->args.count, | |
1068 | IOMODE_READ, NFS_I(hdr->inode)->layout, | |
1069 | hdr->lseg); | |
d67ae825 TH |
1070 | task->tk_status = pnfs_read_done_resend_to_mds(hdr); |
1071 | } | |
1072 | } | |
1073 | ||
1074 | static int ff_layout_async_handle_error_v4(struct rpc_task *task, | |
1075 | struct nfs4_state *state, | |
1076 | struct nfs_client *clp, | |
1077 | struct pnfs_layout_segment *lseg, | |
1078 | int idx) | |
1079 | { | |
1080 | struct pnfs_layout_hdr *lo = lseg->pls_layout; | |
1081 | struct inode *inode = lo->plh_inode; | |
d67ae825 | 1082 | struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); |
d67ae825 TH |
1083 | struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table; |
1084 | ||
d67ae825 | 1085 | switch (task->tk_status) { |
d67ae825 TH |
1086 | case -NFS4ERR_BADSESSION: |
1087 | case -NFS4ERR_BADSLOT: | |
1088 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1089 | case -NFS4ERR_DEADSESSION: | |
1090 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1091 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
1092 | case -NFS4ERR_SEQ_MISORDERED: | |
1093 | dprintk("%s ERROR %d, Reset session. Exchangeid " | |
1094 | "flags 0x%x\n", __func__, task->tk_status, | |
1095 | clp->cl_exchange_flags); | |
1096 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); | |
1097 | break; | |
1098 | case -NFS4ERR_DELAY: | |
1099 | case -NFS4ERR_GRACE: | |
1100 | rpc_delay(task, FF_LAYOUT_POLL_RETRY_MAX); | |
1101 | break; | |
1102 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
1103 | break; | |
1104 | /* Invalidate Layout errors */ | |
1105 | case -NFS4ERR_PNFS_NO_LAYOUT: | |
1106 | case -ESTALE: /* mapped NFS4ERR_STALE */ | |
1107 | case -EBADHANDLE: /* mapped NFS4ERR_BADHANDLE */ | |
1108 | case -EISDIR: /* mapped NFS4ERR_ISDIR */ | |
1109 | case -NFS4ERR_FHEXPIRED: | |
1110 | case -NFS4ERR_WRONG_TYPE: | |
1111 | dprintk("%s Invalid layout error %d\n", __func__, | |
1112 | task->tk_status); | |
1113 | /* | |
1114 | * Destroy layout so new i/o will get a new layout. | |
1115 | * Layout will not be destroyed until all current lseg | |
1116 | * references are put. Mark layout as invalid to resend failed | |
1117 | * i/o and all i/o waiting on the slot table to the MDS until | |
1118 | * layout is destroyed and a new valid layout is obtained. | |
1119 | */ | |
1120 | pnfs_destroy_layout(NFS_I(inode)); | |
1121 | rpc_wake_up(&tbl->slot_tbl_waitq); | |
1122 | goto reset; | |
1123 | /* RPC connection errors */ | |
1124 | case -ECONNREFUSED: | |
1125 | case -EHOSTDOWN: | |
1126 | case -EHOSTUNREACH: | |
1127 | case -ENETUNREACH: | |
1128 | case -EIO: | |
1129 | case -ETIMEDOUT: | |
1130 | case -EPIPE: | |
1131 | dprintk("%s DS connection error %d\n", __func__, | |
1132 | task->tk_status); | |
1c48cee8 WAA |
1133 | nfs4_delete_deviceid(devid->ld, devid->nfs_client, |
1134 | &devid->deviceid); | |
d67ae825 TH |
1135 | rpc_wake_up(&tbl->slot_tbl_waitq); |
1136 | /* fall through */ | |
1137 | default: | |
3b13b4b3 | 1138 | if (ff_layout_avoid_mds_available_ds(lseg)) |
d67ae825 TH |
1139 | return -NFS4ERR_RESET_TO_PNFS; |
1140 | reset: | |
1141 | dprintk("%s Retry through MDS. Error %d\n", __func__, | |
1142 | task->tk_status); | |
1143 | return -NFS4ERR_RESET_TO_MDS; | |
1144 | } | |
d67ae825 TH |
1145 | task->tk_status = 0; |
1146 | return -EAGAIN; | |
d67ae825 TH |
1147 | } |
1148 | ||
1149 | /* Retry all errors through either pNFS or MDS except for -EJUKEBOX */ | |
1150 | static int ff_layout_async_handle_error_v3(struct rpc_task *task, | |
1151 | struct pnfs_layout_segment *lseg, | |
1152 | int idx) | |
1153 | { | |
1154 | struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); | |
1155 | ||
90816d1d TM |
1156 | switch (task->tk_status) { |
1157 | /* File access problems. Don't mark the device as unavailable */ | |
1158 | case -EACCES: | |
1159 | case -ESTALE: | |
1160 | case -EISDIR: | |
1161 | case -EBADHANDLE: | |
1162 | case -ELOOP: | |
1163 | case -ENOSPC: | |
1164 | break; | |
1165 | case -EJUKEBOX: | |
1166 | nfs_inc_stats(lseg->pls_layout->plh_inode, NFSIOS_DELAY); | |
1167 | goto out_retry; | |
1168 | default: | |
d67ae825 TH |
1169 | dprintk("%s DS connection error %d\n", __func__, |
1170 | task->tk_status); | |
1c48cee8 WAA |
1171 | nfs4_delete_deviceid(devid->ld, devid->nfs_client, |
1172 | &devid->deviceid); | |
d67ae825 | 1173 | } |
90816d1d TM |
1174 | /* FIXME: Need to prevent infinite looping here. */ |
1175 | return -NFS4ERR_RESET_TO_PNFS; | |
1176 | out_retry: | |
d67ae825 | 1177 | task->tk_status = 0; |
7eeea167 | 1178 | rpc_restart_call_prepare(task); |
d67ae825 TH |
1179 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); |
1180 | return -EAGAIN; | |
1181 | } | |
1182 | ||
1183 | static int ff_layout_async_handle_error(struct rpc_task *task, | |
1184 | struct nfs4_state *state, | |
1185 | struct nfs_client *clp, | |
1186 | struct pnfs_layout_segment *lseg, | |
1187 | int idx) | |
1188 | { | |
1189 | int vers = clp->cl_nfs_mod->rpc_vers->number; | |
1190 | ||
76c66905 TM |
1191 | if (task->tk_status >= 0) { |
1192 | ff_layout_mark_ds_reachable(lseg, idx); | |
df3ab232 | 1193 | return 0; |
76c66905 | 1194 | } |
df3ab232 TM |
1195 | |
1196 | /* Handle the case of an invalid layout segment */ | |
1197 | if (!pnfs_is_valid_lseg(lseg)) | |
1198 | return -NFS4ERR_RESET_TO_PNFS; | |
1199 | ||
d67ae825 TH |
1200 | switch (vers) { |
1201 | case 3: | |
1202 | return ff_layout_async_handle_error_v3(task, lseg, idx); | |
1203 | case 4: | |
1204 | return ff_layout_async_handle_error_v4(task, state, clp, | |
1205 | lseg, idx); | |
1206 | default: | |
1207 | /* should never happen */ | |
1208 | WARN_ON_ONCE(1); | |
1209 | return 0; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | static void ff_layout_io_track_ds_error(struct pnfs_layout_segment *lseg, | |
1214 | int idx, u64 offset, u64 length, | |
088f3e68 | 1215 | u32 *op_status, int opnum, int error) |
d67ae825 TH |
1216 | { |
1217 | struct nfs4_ff_layout_mirror *mirror; | |
088f3e68 | 1218 | u32 status = *op_status; |
d67ae825 TH |
1219 | int err; |
1220 | ||
dd52128a TM |
1221 | if (status == 0) { |
1222 | switch (error) { | |
1223 | case -ETIMEDOUT: | |
1224 | case -EPFNOSUPPORT: | |
1225 | case -EPROTONOSUPPORT: | |
1226 | case -EOPNOTSUPP: | |
1227 | case -ECONNREFUSED: | |
1228 | case -ECONNRESET: | |
1229 | case -EHOSTDOWN: | |
1230 | case -EHOSTUNREACH: | |
1231 | case -ENETUNREACH: | |
1232 | case -EADDRINUSE: | |
1233 | case -ENOBUFS: | |
1234 | case -EPIPE: | |
1235 | case -EPERM: | |
088f3e68 | 1236 | *op_status = status = NFS4ERR_NXIO; |
dd52128a TM |
1237 | break; |
1238 | case -EACCES: | |
088f3e68 | 1239 | *op_status = status = NFS4ERR_ACCESS; |
dd52128a TM |
1240 | break; |
1241 | default: | |
1242 | return; | |
1243 | } | |
1244 | } | |
1245 | ||
194a0dc8 TM |
1246 | mirror = FF_LAYOUT_COMP(lseg, idx); |
1247 | err = ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout), | |
1248 | mirror, offset, length, status, opnum, | |
1249 | GFP_NOIO); | |
1250 | ||
c22eeb86 PT |
1251 | switch (status) { |
1252 | case NFS4ERR_DELAY: | |
1253 | case NFS4ERR_GRACE: | |
c22eeb86 | 1254 | break; |
194a0dc8 TM |
1255 | case NFS4ERR_NXIO: |
1256 | ff_layout_mark_ds_unreachable(lseg, idx); | |
563c53e7 TM |
1257 | /* |
1258 | * Don't return the layout if this is a read and we still | |
1259 | * have layouts to try | |
1260 | */ | |
1261 | if (opnum == OP_READ) | |
1262 | break; | |
194a0dc8 TM |
1263 | /* Fallthrough */ |
1264 | default: | |
1265 | pnfs_error_mark_layout_for_return(lseg->pls_layout->plh_inode, | |
1266 | lseg); | |
c22eeb86 PT |
1267 | } |
1268 | ||
d67ae825 TH |
1269 | dprintk("%s: err %d op %d status %u\n", __func__, err, opnum, status); |
1270 | } | |
1271 | ||
1272 | /* NFS_PROTO call done callback routines */ | |
d67ae825 TH |
1273 | static int ff_layout_read_done_cb(struct rpc_task *task, |
1274 | struct nfs_pgio_header *hdr) | |
1275 | { | |
d67ae825 TH |
1276 | int err; |
1277 | ||
088f3e68 | 1278 | if (task->tk_status < 0) { |
d67ae825 TH |
1279 | ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx, |
1280 | hdr->args.offset, hdr->args.count, | |
088f3e68 | 1281 | &hdr->res.op_status, OP_READ, |
dd52128a | 1282 | task->tk_status); |
088f3e68 TM |
1283 | trace_ff_layout_read_error(hdr); |
1284 | } | |
1285 | ||
d67ae825 TH |
1286 | err = ff_layout_async_handle_error(task, hdr->args.context->state, |
1287 | hdr->ds_clp, hdr->lseg, | |
1288 | hdr->pgio_mirror_idx); | |
1289 | ||
0722dc9f | 1290 | trace_nfs4_pnfs_read(hdr, err); |
42f86b44 TM |
1291 | clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); |
1292 | clear_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags); | |
d67ae825 TH |
1293 | switch (err) { |
1294 | case -NFS4ERR_RESET_TO_PNFS: | |
42f86b44 | 1295 | set_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); |
d67ae825 TH |
1296 | return task->tk_status; |
1297 | case -NFS4ERR_RESET_TO_MDS: | |
42f86b44 | 1298 | set_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags); |
d67ae825 TH |
1299 | return task->tk_status; |
1300 | case -EAGAIN: | |
13544412 | 1301 | goto out_eagain; |
d67ae825 TH |
1302 | } |
1303 | ||
1304 | return 0; | |
13544412 TM |
1305 | out_eagain: |
1306 | rpc_restart_call_prepare(task); | |
1307 | return -EAGAIN; | |
d67ae825 TH |
1308 | } |
1309 | ||
c0f5f505 TM |
1310 | static bool |
1311 | ff_layout_need_layoutcommit(struct pnfs_layout_segment *lseg) | |
1312 | { | |
1313 | return !(FF_LAYOUT_LSEG(lseg)->flags & FF_FLAGS_NO_LAYOUTCOMMIT); | |
1314 | } | |
1315 | ||
d67ae825 TH |
1316 | /* |
1317 | * We reference the rpc_cred of the first WRITE that triggers the need for | |
1318 | * a LAYOUTCOMMIT, and use it to send the layoutcommit compound. | |
1319 | * rfc5661 is not clear about which credential should be used. | |
1320 | * | |
1321 | * Flexlayout client should treat DS replied FILE_SYNC as DATA_SYNC, so | |
1322 | * to follow http://www.rfc-editor.org/errata_search.php?rfc=5661&eid=2751 | |
1323 | * we always send layoutcommit after DS writes. | |
1324 | */ | |
1325 | static void | |
bc28e1c2 TM |
1326 | ff_layout_set_layoutcommit(struct inode *inode, |
1327 | struct pnfs_layout_segment *lseg, | |
1328 | loff_t end_offset) | |
d67ae825 | 1329 | { |
bc28e1c2 | 1330 | if (!ff_layout_need_layoutcommit(lseg)) |
c0f5f505 TM |
1331 | return; |
1332 | ||
bc28e1c2 TM |
1333 | pnfs_set_layoutcommit(inode, lseg, end_offset); |
1334 | dprintk("%s inode %lu pls_end_pos %llu\n", __func__, inode->i_ino, | |
1335 | (unsigned long long) NFS_I(inode)->layout->plh_lwb); | |
d67ae825 TH |
1336 | } |
1337 | ||
37e9ed22 TM |
1338 | static void ff_layout_read_record_layoutstats_start(struct rpc_task *task, |
1339 | struct nfs_pgio_header *hdr) | |
d67ae825 | 1340 | { |
37e9ed22 TM |
1341 | if (test_and_set_bit(NFS_IOHDR_STAT, &hdr->flags)) |
1342 | return; | |
0b7baf94 | 1343 | nfs4_ff_layout_stat_io_start_read(hdr->inode, |
abcb7bfc | 1344 | FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx), |
e76d28dd TM |
1345 | hdr->args.count, |
1346 | task->tk_start); | |
37e9ed22 TM |
1347 | } |
1348 | ||
1349 | static void ff_layout_read_record_layoutstats_done(struct rpc_task *task, | |
1350 | struct nfs_pgio_header *hdr) | |
1351 | { | |
1352 | if (!test_and_clear_bit(NFS_IOHDR_STAT, &hdr->flags)) | |
1353 | return; | |
1354 | nfs4_ff_layout_stat_io_end_read(task, | |
1355 | FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx), | |
1356 | hdr->args.count, | |
1357 | hdr->res.count); | |
056f9ad6 | 1358 | set_bit(NFS_LSEG_LAYOUTRETURN, &hdr->lseg->pls_flags); |
37e9ed22 | 1359 | } |
abcb7bfc | 1360 | |
37e9ed22 TM |
1361 | static int ff_layout_read_prepare_common(struct rpc_task *task, |
1362 | struct nfs_pgio_header *hdr) | |
1363 | { | |
d67ae825 TH |
1364 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) { |
1365 | rpc_exit(task, -EIO); | |
1366 | return -EIO; | |
1367 | } | |
d67ae825 | 1368 | |
37e9ed22 | 1369 | ff_layout_read_record_layoutstats_start(task, hdr); |
d67ae825 TH |
1370 | return 0; |
1371 | } | |
1372 | ||
1373 | /* | |
1374 | * Call ops for the async read/write cases | |
1375 | * In the case of dense layouts, the offset needs to be reset to its | |
1376 | * original value. | |
1377 | */ | |
1378 | static void ff_layout_read_prepare_v3(struct rpc_task *task, void *data) | |
1379 | { | |
1380 | struct nfs_pgio_header *hdr = data; | |
1381 | ||
1382 | if (ff_layout_read_prepare_common(task, hdr)) | |
1383 | return; | |
1384 | ||
1385 | rpc_call_start(task); | |
1386 | } | |
1387 | ||
d67ae825 TH |
1388 | static void ff_layout_read_prepare_v4(struct rpc_task *task, void *data) |
1389 | { | |
1390 | struct nfs_pgio_header *hdr = data; | |
1391 | ||
6de7e12f AS |
1392 | if (nfs4_setup_sequence(hdr->ds_clp, |
1393 | &hdr->args.seq_args, | |
1394 | &hdr->res.seq_res, | |
1395 | task)) | |
d67ae825 TH |
1396 | return; |
1397 | ||
bb21ce0a | 1398 | ff_layout_read_prepare_common(task, hdr); |
d67ae825 TH |
1399 | } |
1400 | ||
1401 | static void ff_layout_read_call_done(struct rpc_task *task, void *data) | |
1402 | { | |
1403 | struct nfs_pgio_header *hdr = data; | |
1404 | ||
1405 | dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status); | |
1406 | ||
1407 | if (test_bit(NFS_IOHDR_REDO, &hdr->flags) && | |
1408 | task->tk_status == 0) { | |
1409 | nfs4_sequence_done(task, &hdr->res.seq_res); | |
1410 | return; | |
1411 | } | |
1412 | ||
1413 | /* Note this may cause RPC to be resent */ | |
1414 | hdr->mds_ops->rpc_call_done(task, hdr); | |
1415 | } | |
1416 | ||
1417 | static void ff_layout_read_count_stats(struct rpc_task *task, void *data) | |
1418 | { | |
1419 | struct nfs_pgio_header *hdr = data; | |
1420 | ||
37e9ed22 | 1421 | ff_layout_read_record_layoutstats_done(task, hdr); |
d67ae825 TH |
1422 | rpc_count_iostats_metrics(task, |
1423 | &NFS_CLIENT(hdr->inode)->cl_metrics[NFSPROC4_CLNT_READ]); | |
1424 | } | |
1425 | ||
4d0ac221 TM |
1426 | static void ff_layout_read_release(void *data) |
1427 | { | |
1428 | struct nfs_pgio_header *hdr = data; | |
1429 | ||
1430 | ff_layout_read_record_layoutstats_done(&hdr->task, hdr); | |
563c53e7 TM |
1431 | if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) |
1432 | ff_layout_resend_pnfs_read(hdr); | |
1433 | else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags)) | |
42f86b44 | 1434 | ff_layout_reset_read(hdr); |
4d0ac221 TM |
1435 | pnfs_generic_rw_release(data); |
1436 | } | |
1437 | ||
1438 | ||
d67ae825 TH |
1439 | static int ff_layout_write_done_cb(struct rpc_task *task, |
1440 | struct nfs_pgio_header *hdr) | |
1441 | { | |
2e18d4d8 | 1442 | loff_t end_offs = 0; |
d67ae825 TH |
1443 | int err; |
1444 | ||
088f3e68 | 1445 | if (task->tk_status < 0) { |
d67ae825 TH |
1446 | ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx, |
1447 | hdr->args.offset, hdr->args.count, | |
088f3e68 | 1448 | &hdr->res.op_status, OP_WRITE, |
dd52128a | 1449 | task->tk_status); |
088f3e68 TM |
1450 | trace_ff_layout_write_error(hdr); |
1451 | } | |
1452 | ||
d67ae825 TH |
1453 | err = ff_layout_async_handle_error(task, hdr->args.context->state, |
1454 | hdr->ds_clp, hdr->lseg, | |
1455 | hdr->pgio_mirror_idx); | |
1456 | ||
0722dc9f | 1457 | trace_nfs4_pnfs_write(hdr, err); |
7b0df92a TM |
1458 | clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); |
1459 | clear_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags); | |
d67ae825 TH |
1460 | switch (err) { |
1461 | case -NFS4ERR_RESET_TO_PNFS: | |
7b0df92a | 1462 | set_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); |
7cc8c5cd | 1463 | return task->tk_status; |
d67ae825 | 1464 | case -NFS4ERR_RESET_TO_MDS: |
7b0df92a | 1465 | set_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags); |
d67ae825 TH |
1466 | return task->tk_status; |
1467 | case -EAGAIN: | |
d67ae825 TH |
1468 | return -EAGAIN; |
1469 | } | |
1470 | ||
1471 | if (hdr->res.verf->committed == NFS_FILE_SYNC || | |
1472 | hdr->res.verf->committed == NFS_DATA_SYNC) | |
2e18d4d8 TM |
1473 | end_offs = hdr->mds_offset + (loff_t)hdr->res.count; |
1474 | ||
1475 | /* Note: if the write is unstable, don't set end_offs until commit */ | |
1476 | ff_layout_set_layoutcommit(hdr->inode, hdr->lseg, end_offs); | |
d67ae825 | 1477 | |
54204010 PT |
1478 | /* zero out fattr since we don't care DS attr at all */ |
1479 | hdr->fattr.valid = 0; | |
69f230d9 PT |
1480 | if (task->tk_status >= 0) |
1481 | nfs_writeback_update_inode(hdr); | |
1482 | ||
d67ae825 TH |
1483 | return 0; |
1484 | } | |
1485 | ||
1486 | static int ff_layout_commit_done_cb(struct rpc_task *task, | |
1487 | struct nfs_commit_data *data) | |
1488 | { | |
d67ae825 TH |
1489 | int err; |
1490 | ||
088f3e68 | 1491 | if (task->tk_status < 0) { |
d67ae825 TH |
1492 | ff_layout_io_track_ds_error(data->lseg, data->ds_commit_index, |
1493 | data->args.offset, data->args.count, | |
088f3e68 | 1494 | &data->res.op_status, OP_COMMIT, |
dd52128a | 1495 | task->tk_status); |
088f3e68 TM |
1496 | trace_ff_layout_commit_error(data); |
1497 | } | |
1498 | ||
d67ae825 TH |
1499 | err = ff_layout_async_handle_error(task, NULL, data->ds_clp, |
1500 | data->lseg, data->ds_commit_index); | |
1501 | ||
0722dc9f | 1502 | trace_nfs4_pnfs_commit_ds(data, err); |
d67ae825 TH |
1503 | switch (err) { |
1504 | case -NFS4ERR_RESET_TO_PNFS: | |
7cc8c5cd TM |
1505 | pnfs_generic_prepare_to_resend_writes(data); |
1506 | return -EAGAIN; | |
d67ae825 | 1507 | case -NFS4ERR_RESET_TO_MDS: |
d67ae825 TH |
1508 | pnfs_generic_prepare_to_resend_writes(data); |
1509 | return -EAGAIN; | |
1510 | case -EAGAIN: | |
1511 | rpc_restart_call_prepare(task); | |
1512 | return -EAGAIN; | |
1513 | } | |
1514 | ||
bc28e1c2 | 1515 | ff_layout_set_layoutcommit(data->inode, data->lseg, data->lwb); |
d67ae825 TH |
1516 | |
1517 | return 0; | |
1518 | } | |
1519 | ||
37e9ed22 TM |
1520 | static void ff_layout_write_record_layoutstats_start(struct rpc_task *task, |
1521 | struct nfs_pgio_header *hdr) | |
d67ae825 | 1522 | { |
37e9ed22 TM |
1523 | if (test_and_set_bit(NFS_IOHDR_STAT, &hdr->flags)) |
1524 | return; | |
0b7baf94 | 1525 | nfs4_ff_layout_stat_io_start_write(hdr->inode, |
abcb7bfc | 1526 | FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx), |
e76d28dd TM |
1527 | hdr->args.count, |
1528 | task->tk_start); | |
37e9ed22 TM |
1529 | } |
1530 | ||
1531 | static void ff_layout_write_record_layoutstats_done(struct rpc_task *task, | |
1532 | struct nfs_pgio_header *hdr) | |
1533 | { | |
1534 | if (!test_and_clear_bit(NFS_IOHDR_STAT, &hdr->flags)) | |
1535 | return; | |
1536 | nfs4_ff_layout_stat_io_end_write(task, | |
1537 | FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx), | |
1538 | hdr->args.count, hdr->res.count, | |
1539 | hdr->res.verf->committed); | |
056f9ad6 | 1540 | set_bit(NFS_LSEG_LAYOUTRETURN, &hdr->lseg->pls_flags); |
37e9ed22 | 1541 | } |
abcb7bfc | 1542 | |
37e9ed22 TM |
1543 | static int ff_layout_write_prepare_common(struct rpc_task *task, |
1544 | struct nfs_pgio_header *hdr) | |
1545 | { | |
d67ae825 TH |
1546 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) { |
1547 | rpc_exit(task, -EIO); | |
1548 | return -EIO; | |
1549 | } | |
1550 | ||
37e9ed22 | 1551 | ff_layout_write_record_layoutstats_start(task, hdr); |
d67ae825 TH |
1552 | return 0; |
1553 | } | |
1554 | ||
1555 | static void ff_layout_write_prepare_v3(struct rpc_task *task, void *data) | |
1556 | { | |
1557 | struct nfs_pgio_header *hdr = data; | |
1558 | ||
1559 | if (ff_layout_write_prepare_common(task, hdr)) | |
1560 | return; | |
1561 | ||
1562 | rpc_call_start(task); | |
1563 | } | |
1564 | ||
1565 | static void ff_layout_write_prepare_v4(struct rpc_task *task, void *data) | |
1566 | { | |
1567 | struct nfs_pgio_header *hdr = data; | |
1568 | ||
6de7e12f AS |
1569 | if (nfs4_setup_sequence(hdr->ds_clp, |
1570 | &hdr->args.seq_args, | |
1571 | &hdr->res.seq_res, | |
1572 | task)) | |
d67ae825 TH |
1573 | return; |
1574 | ||
bb21ce0a | 1575 | ff_layout_write_prepare_common(task, hdr); |
d67ae825 TH |
1576 | } |
1577 | ||
1578 | static void ff_layout_write_call_done(struct rpc_task *task, void *data) | |
1579 | { | |
1580 | struct nfs_pgio_header *hdr = data; | |
1581 | ||
1582 | if (test_bit(NFS_IOHDR_REDO, &hdr->flags) && | |
1583 | task->tk_status == 0) { | |
1584 | nfs4_sequence_done(task, &hdr->res.seq_res); | |
1585 | return; | |
1586 | } | |
1587 | ||
1588 | /* Note this may cause RPC to be resent */ | |
1589 | hdr->mds_ops->rpc_call_done(task, hdr); | |
1590 | } | |
1591 | ||
1592 | static void ff_layout_write_count_stats(struct rpc_task *task, void *data) | |
1593 | { | |
1594 | struct nfs_pgio_header *hdr = data; | |
1595 | ||
37e9ed22 | 1596 | ff_layout_write_record_layoutstats_done(task, hdr); |
d67ae825 TH |
1597 | rpc_count_iostats_metrics(task, |
1598 | &NFS_CLIENT(hdr->inode)->cl_metrics[NFSPROC4_CLNT_WRITE]); | |
1599 | } | |
1600 | ||
4d0ac221 TM |
1601 | static void ff_layout_write_release(void *data) |
1602 | { | |
1603 | struct nfs_pgio_header *hdr = data; | |
1604 | ||
1605 | ff_layout_write_record_layoutstats_done(&hdr->task, hdr); | |
f0922a6c TM |
1606 | if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) { |
1607 | ff_layout_send_layouterror(hdr->lseg); | |
7b0df92a | 1608 | ff_layout_reset_write(hdr, true); |
f0922a6c | 1609 | } else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags)) |
7b0df92a | 1610 | ff_layout_reset_write(hdr, false); |
4d0ac221 TM |
1611 | pnfs_generic_rw_release(data); |
1612 | } | |
1613 | ||
37e9ed22 | 1614 | static void ff_layout_commit_record_layoutstats_start(struct rpc_task *task, |
abcb7bfc TM |
1615 | struct nfs_commit_data *cdata) |
1616 | { | |
37e9ed22 TM |
1617 | if (test_and_set_bit(NFS_IOHDR_STAT, &cdata->flags)) |
1618 | return; | |
0b7baf94 | 1619 | nfs4_ff_layout_stat_io_start_write(cdata->inode, |
abcb7bfc | 1620 | FF_LAYOUT_COMP(cdata->lseg, cdata->ds_commit_index), |
e76d28dd | 1621 | 0, task->tk_start); |
abcb7bfc TM |
1622 | } |
1623 | ||
37e9ed22 TM |
1624 | static void ff_layout_commit_record_layoutstats_done(struct rpc_task *task, |
1625 | struct nfs_commit_data *cdata) | |
1626 | { | |
1627 | struct nfs_page *req; | |
1628 | __u64 count = 0; | |
1629 | ||
1630 | if (!test_and_clear_bit(NFS_IOHDR_STAT, &cdata->flags)) | |
1631 | return; | |
1632 | ||
1633 | if (task->tk_status == 0) { | |
1634 | list_for_each_entry(req, &cdata->pages, wb_list) | |
1635 | count += req->wb_bytes; | |
1636 | } | |
1637 | nfs4_ff_layout_stat_io_end_write(task, | |
1638 | FF_LAYOUT_COMP(cdata->lseg, cdata->ds_commit_index), | |
1639 | count, count, NFS_FILE_SYNC); | |
056f9ad6 | 1640 | set_bit(NFS_LSEG_LAYOUTRETURN, &cdata->lseg->pls_flags); |
37e9ed22 TM |
1641 | } |
1642 | ||
1643 | static void ff_layout_commit_prepare_common(struct rpc_task *task, | |
1644 | struct nfs_commit_data *cdata) | |
1645 | { | |
1646 | ff_layout_commit_record_layoutstats_start(task, cdata); | |
1647 | } | |
1648 | ||
d67ae825 TH |
1649 | static void ff_layout_commit_prepare_v3(struct rpc_task *task, void *data) |
1650 | { | |
abcb7bfc | 1651 | ff_layout_commit_prepare_common(task, data); |
d67ae825 TH |
1652 | rpc_call_start(task); |
1653 | } | |
1654 | ||
1655 | static void ff_layout_commit_prepare_v4(struct rpc_task *task, void *data) | |
1656 | { | |
1657 | struct nfs_commit_data *wdata = data; | |
1658 | ||
6de7e12f AS |
1659 | if (nfs4_setup_sequence(wdata->ds_clp, |
1660 | &wdata->args.seq_args, | |
1661 | &wdata->res.seq_res, | |
1662 | task)) | |
abcb7bfc TM |
1663 | return; |
1664 | ff_layout_commit_prepare_common(task, data); | |
1665 | } | |
1666 | ||
1667 | static void ff_layout_commit_done(struct rpc_task *task, void *data) | |
141b9b59 PT |
1668 | { |
1669 | pnfs_generic_write_commit_done(task, data); | |
1670 | } | |
1671 | ||
1672 | static void ff_layout_commit_count_stats(struct rpc_task *task, void *data) | |
abcb7bfc TM |
1673 | { |
1674 | struct nfs_commit_data *cdata = data; | |
abcb7bfc | 1675 | |
37e9ed22 | 1676 | ff_layout_commit_record_layoutstats_done(task, cdata); |
d67ae825 TH |
1677 | rpc_count_iostats_metrics(task, |
1678 | &NFS_CLIENT(cdata->inode)->cl_metrics[NFSPROC4_CLNT_COMMIT]); | |
1679 | } | |
1680 | ||
4d0ac221 TM |
1681 | static void ff_layout_commit_release(void *data) |
1682 | { | |
1683 | struct nfs_commit_data *cdata = data; | |
1684 | ||
1685 | ff_layout_commit_record_layoutstats_done(&cdata->task, cdata); | |
1686 | pnfs_generic_commit_release(data); | |
1687 | } | |
1688 | ||
d67ae825 TH |
1689 | static const struct rpc_call_ops ff_layout_read_call_ops_v3 = { |
1690 | .rpc_call_prepare = ff_layout_read_prepare_v3, | |
1691 | .rpc_call_done = ff_layout_read_call_done, | |
1692 | .rpc_count_stats = ff_layout_read_count_stats, | |
4d0ac221 | 1693 | .rpc_release = ff_layout_read_release, |
d67ae825 TH |
1694 | }; |
1695 | ||
1696 | static const struct rpc_call_ops ff_layout_read_call_ops_v4 = { | |
1697 | .rpc_call_prepare = ff_layout_read_prepare_v4, | |
1698 | .rpc_call_done = ff_layout_read_call_done, | |
1699 | .rpc_count_stats = ff_layout_read_count_stats, | |
4d0ac221 | 1700 | .rpc_release = ff_layout_read_release, |
d67ae825 TH |
1701 | }; |
1702 | ||
1703 | static const struct rpc_call_ops ff_layout_write_call_ops_v3 = { | |
1704 | .rpc_call_prepare = ff_layout_write_prepare_v3, | |
1705 | .rpc_call_done = ff_layout_write_call_done, | |
1706 | .rpc_count_stats = ff_layout_write_count_stats, | |
4d0ac221 | 1707 | .rpc_release = ff_layout_write_release, |
d67ae825 TH |
1708 | }; |
1709 | ||
1710 | static const struct rpc_call_ops ff_layout_write_call_ops_v4 = { | |
1711 | .rpc_call_prepare = ff_layout_write_prepare_v4, | |
1712 | .rpc_call_done = ff_layout_write_call_done, | |
1713 | .rpc_count_stats = ff_layout_write_count_stats, | |
4d0ac221 | 1714 | .rpc_release = ff_layout_write_release, |
d67ae825 TH |
1715 | }; |
1716 | ||
1717 | static const struct rpc_call_ops ff_layout_commit_call_ops_v3 = { | |
1718 | .rpc_call_prepare = ff_layout_commit_prepare_v3, | |
abcb7bfc | 1719 | .rpc_call_done = ff_layout_commit_done, |
d67ae825 | 1720 | .rpc_count_stats = ff_layout_commit_count_stats, |
4d0ac221 | 1721 | .rpc_release = ff_layout_commit_release, |
d67ae825 TH |
1722 | }; |
1723 | ||
1724 | static const struct rpc_call_ops ff_layout_commit_call_ops_v4 = { | |
1725 | .rpc_call_prepare = ff_layout_commit_prepare_v4, | |
abcb7bfc | 1726 | .rpc_call_done = ff_layout_commit_done, |
d67ae825 | 1727 | .rpc_count_stats = ff_layout_commit_count_stats, |
4d0ac221 | 1728 | .rpc_release = ff_layout_commit_release, |
d67ae825 TH |
1729 | }; |
1730 | ||
1731 | static enum pnfs_try_status | |
1732 | ff_layout_read_pagelist(struct nfs_pgio_header *hdr) | |
1733 | { | |
1734 | struct pnfs_layout_segment *lseg = hdr->lseg; | |
1735 | struct nfs4_pnfs_ds *ds; | |
1736 | struct rpc_clnt *ds_clnt; | |
2444ff27 | 1737 | struct nfs4_ff_layout_mirror *mirror; |
a52458b4 | 1738 | const struct cred *ds_cred; |
d67ae825 TH |
1739 | loff_t offset = hdr->args.offset; |
1740 | u32 idx = hdr->pgio_mirror_idx; | |
1741 | int vers; | |
1742 | struct nfs_fh *fh; | |
1743 | ||
5b5e0928 | 1744 | dprintk("--> %s ino %lu pgbase %u req %zu@%llu\n", |
d67ae825 TH |
1745 | __func__, hdr->inode->i_ino, |
1746 | hdr->args.pgbase, (size_t)hdr->args.count, offset); | |
1747 | ||
2444ff27 TM |
1748 | mirror = FF_LAYOUT_COMP(lseg, idx); |
1749 | ds = nfs4_ff_layout_prepare_ds(lseg, mirror, false); | |
d67ae825 TH |
1750 | if (!ds) |
1751 | goto out_failed; | |
1752 | ||
561d6f8a | 1753 | ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, |
d67ae825 TH |
1754 | hdr->inode); |
1755 | if (IS_ERR(ds_clnt)) | |
1756 | goto out_failed; | |
1757 | ||
312cd4cb | 1758 | ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, hdr->cred); |
57f3f4c0 | 1759 | if (!ds_cred) |
d67ae825 TH |
1760 | goto out_failed; |
1761 | ||
626d48b1 | 1762 | vers = nfs4_ff_layout_ds_version(mirror); |
d67ae825 TH |
1763 | |
1764 | dprintk("%s USE DS: %s cl_count %d vers %d\n", __func__, | |
212bf41d | 1765 | ds->ds_remotestr, refcount_read(&ds->ds_clp->cl_count), vers); |
d67ae825 | 1766 | |
75bf47eb | 1767 | hdr->pgio_done_cb = ff_layout_read_done_cb; |
212bf41d | 1768 | refcount_inc(&ds->ds_clp->cl_count); |
d67ae825 | 1769 | hdr->ds_clp = ds->ds_clp; |
749da527 | 1770 | fh = nfs4_ff_layout_select_ds_fh(mirror); |
d67ae825 TH |
1771 | if (fh) |
1772 | hdr->args.fh = fh; | |
bb21ce0a | 1773 | |
4cbc8a57 | 1774 | nfs4_ff_layout_select_ds_stateid(mirror, &hdr->args.stateid); |
bb21ce0a | 1775 | |
d67ae825 TH |
1776 | /* |
1777 | * Note that if we ever decide to split across DSes, | |
1778 | * then we may need to handle dense-like offsets. | |
1779 | */ | |
1780 | hdr->args.offset = offset; | |
1781 | hdr->mds_offset = offset; | |
1782 | ||
1783 | /* Perform an asynchronous read to ds */ | |
1784 | nfs_initiate_pgio(ds_clnt, hdr, ds_cred, ds->ds_clp->rpc_ops, | |
1785 | vers == 3 ? &ff_layout_read_call_ops_v3 : | |
1786 | &ff_layout_read_call_ops_v4, | |
1787 | 0, RPC_TASK_SOFTCONN); | |
a52458b4 | 1788 | put_cred(ds_cred); |
d67ae825 TH |
1789 | return PNFS_ATTEMPTED; |
1790 | ||
1791 | out_failed: | |
3b13b4b3 | 1792 | if (ff_layout_avoid_mds_available_ds(lseg)) |
d67ae825 | 1793 | return PNFS_TRY_AGAIN; |
d5b9216f TM |
1794 | trace_pnfs_mds_fallback_read_pagelist(hdr->inode, |
1795 | hdr->args.offset, hdr->args.count, | |
1796 | IOMODE_READ, NFS_I(hdr->inode)->layout, lseg); | |
d67ae825 TH |
1797 | return PNFS_NOT_ATTEMPTED; |
1798 | } | |
1799 | ||
1800 | /* Perform async writes. */ | |
1801 | static enum pnfs_try_status | |
1802 | ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync) | |
1803 | { | |
1804 | struct pnfs_layout_segment *lseg = hdr->lseg; | |
1805 | struct nfs4_pnfs_ds *ds; | |
1806 | struct rpc_clnt *ds_clnt; | |
2444ff27 | 1807 | struct nfs4_ff_layout_mirror *mirror; |
a52458b4 | 1808 | const struct cred *ds_cred; |
d67ae825 TH |
1809 | loff_t offset = hdr->args.offset; |
1810 | int vers; | |
1811 | struct nfs_fh *fh; | |
1812 | int idx = hdr->pgio_mirror_idx; | |
1813 | ||
2444ff27 TM |
1814 | mirror = FF_LAYOUT_COMP(lseg, idx); |
1815 | ds = nfs4_ff_layout_prepare_ds(lseg, mirror, true); | |
d67ae825 | 1816 | if (!ds) |
37f8aa16 | 1817 | goto out_failed; |
d67ae825 | 1818 | |
561d6f8a | 1819 | ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, |
d67ae825 TH |
1820 | hdr->inode); |
1821 | if (IS_ERR(ds_clnt)) | |
37f8aa16 | 1822 | goto out_failed; |
d67ae825 | 1823 | |
312cd4cb | 1824 | ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, hdr->cred); |
57f3f4c0 | 1825 | if (!ds_cred) |
37f8aa16 | 1826 | goto out_failed; |
d67ae825 | 1827 | |
626d48b1 | 1828 | vers = nfs4_ff_layout_ds_version(mirror); |
d67ae825 | 1829 | |
5b5e0928 | 1830 | dprintk("%s ino %lu sync %d req %zu@%llu DS: %s cl_count %d vers %d\n", |
d67ae825 | 1831 | __func__, hdr->inode->i_ino, sync, (size_t) hdr->args.count, |
212bf41d | 1832 | offset, ds->ds_remotestr, refcount_read(&ds->ds_clp->cl_count), |
d67ae825 TH |
1833 | vers); |
1834 | ||
1835 | hdr->pgio_done_cb = ff_layout_write_done_cb; | |
212bf41d | 1836 | refcount_inc(&ds->ds_clp->cl_count); |
d67ae825 TH |
1837 | hdr->ds_clp = ds->ds_clp; |
1838 | hdr->ds_commit_idx = idx; | |
749da527 | 1839 | fh = nfs4_ff_layout_select_ds_fh(mirror); |
d67ae825 TH |
1840 | if (fh) |
1841 | hdr->args.fh = fh; | |
1842 | ||
4cbc8a57 | 1843 | nfs4_ff_layout_select_ds_stateid(mirror, &hdr->args.stateid); |
bb21ce0a | 1844 | |
d67ae825 TH |
1845 | /* |
1846 | * Note that if we ever decide to split across DSes, | |
1847 | * then we may need to handle dense-like offsets. | |
1848 | */ | |
1849 | hdr->args.offset = offset; | |
1850 | ||
1851 | /* Perform an asynchronous write */ | |
1852 | nfs_initiate_pgio(ds_clnt, hdr, ds_cred, ds->ds_clp->rpc_ops, | |
1853 | vers == 3 ? &ff_layout_write_call_ops_v3 : | |
1854 | &ff_layout_write_call_ops_v4, | |
1855 | sync, RPC_TASK_SOFTCONN); | |
a52458b4 | 1856 | put_cred(ds_cred); |
d67ae825 | 1857 | return PNFS_ATTEMPTED; |
37f8aa16 TM |
1858 | |
1859 | out_failed: | |
1860 | if (ff_layout_avoid_mds_available_ds(lseg)) | |
1861 | return PNFS_TRY_AGAIN; | |
d5b9216f TM |
1862 | trace_pnfs_mds_fallback_write_pagelist(hdr->inode, |
1863 | hdr->args.offset, hdr->args.count, | |
1864 | IOMODE_RW, NFS_I(hdr->inode)->layout, lseg); | |
37f8aa16 | 1865 | return PNFS_NOT_ATTEMPTED; |
d67ae825 TH |
1866 | } |
1867 | ||
d67ae825 TH |
1868 | static u32 calc_ds_index_from_commit(struct pnfs_layout_segment *lseg, u32 i) |
1869 | { | |
1870 | return i; | |
1871 | } | |
1872 | ||
1873 | static struct nfs_fh * | |
1874 | select_ds_fh_from_commit(struct pnfs_layout_segment *lseg, u32 i) | |
1875 | { | |
1876 | struct nfs4_ff_layout_segment *flseg = FF_LAYOUT_LSEG(lseg); | |
1877 | ||
1878 | /* FIXME: Assume that there is only one NFS version available | |
1879 | * for the DS. | |
1880 | */ | |
1881 | return &flseg->mirror_array[i]->fh_versions[0]; | |
1882 | } | |
1883 | ||
1884 | static int ff_layout_initiate_commit(struct nfs_commit_data *data, int how) | |
1885 | { | |
1886 | struct pnfs_layout_segment *lseg = data->lseg; | |
1887 | struct nfs4_pnfs_ds *ds; | |
1888 | struct rpc_clnt *ds_clnt; | |
2444ff27 | 1889 | struct nfs4_ff_layout_mirror *mirror; |
a52458b4 | 1890 | const struct cred *ds_cred; |
d67ae825 | 1891 | u32 idx; |
57f3f4c0 | 1892 | int vers, ret; |
d67ae825 TH |
1893 | struct nfs_fh *fh; |
1894 | ||
4b75053e TM |
1895 | if (!lseg || !(pnfs_is_valid_lseg(lseg) || |
1896 | test_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags))) | |
1897 | goto out_err; | |
1898 | ||
d67ae825 | 1899 | idx = calc_ds_index_from_commit(lseg, data->ds_commit_index); |
2444ff27 TM |
1900 | mirror = FF_LAYOUT_COMP(lseg, idx); |
1901 | ds = nfs4_ff_layout_prepare_ds(lseg, mirror, true); | |
d67ae825 TH |
1902 | if (!ds) |
1903 | goto out_err; | |
1904 | ||
561d6f8a | 1905 | ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, |
d67ae825 TH |
1906 | data->inode); |
1907 | if (IS_ERR(ds_clnt)) | |
1908 | goto out_err; | |
1909 | ||
312cd4cb | 1910 | ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, data->cred); |
57f3f4c0 | 1911 | if (!ds_cred) |
d67ae825 TH |
1912 | goto out_err; |
1913 | ||
626d48b1 | 1914 | vers = nfs4_ff_layout_ds_version(mirror); |
d67ae825 TH |
1915 | |
1916 | dprintk("%s ino %lu, how %d cl_count %d vers %d\n", __func__, | |
212bf41d | 1917 | data->inode->i_ino, how, refcount_read(&ds->ds_clp->cl_count), |
d67ae825 TH |
1918 | vers); |
1919 | data->commit_done_cb = ff_layout_commit_done_cb; | |
1920 | data->cred = ds_cred; | |
212bf41d | 1921 | refcount_inc(&ds->ds_clp->cl_count); |
d67ae825 TH |
1922 | data->ds_clp = ds->ds_clp; |
1923 | fh = select_ds_fh_from_commit(lseg, data->ds_commit_index); | |
1924 | if (fh) | |
1925 | data->args.fh = fh; | |
abcb7bfc | 1926 | |
57f3f4c0 | 1927 | ret = nfs_initiate_commit(ds_clnt, data, ds->ds_clp->rpc_ops, |
d67ae825 TH |
1928 | vers == 3 ? &ff_layout_commit_call_ops_v3 : |
1929 | &ff_layout_commit_call_ops_v4, | |
1930 | how, RPC_TASK_SOFTCONN); | |
a52458b4 | 1931 | put_cred(ds_cred); |
57f3f4c0 | 1932 | return ret; |
d67ae825 TH |
1933 | out_err: |
1934 | pnfs_generic_prepare_to_resend_writes(data); | |
1935 | pnfs_generic_commit_release(data); | |
1936 | return -EAGAIN; | |
1937 | } | |
1938 | ||
1939 | static int | |
1940 | ff_layout_commit_pagelist(struct inode *inode, struct list_head *mds_pages, | |
1941 | int how, struct nfs_commit_info *cinfo) | |
1942 | { | |
1943 | return pnfs_generic_commit_pagelist(inode, mds_pages, how, cinfo, | |
1944 | ff_layout_initiate_commit); | |
1945 | } | |
1946 | ||
1947 | static struct pnfs_ds_commit_info * | |
1948 | ff_layout_get_ds_info(struct inode *inode) | |
1949 | { | |
1950 | struct pnfs_layout_hdr *layout = NFS_I(inode)->layout; | |
1951 | ||
1952 | if (layout == NULL) | |
1953 | return NULL; | |
1954 | ||
1955 | return &FF_LAYOUT_FROM_HDR(layout)->commit_info; | |
1956 | } | |
1957 | ||
ba827c9a TM |
1958 | static void |
1959 | ff_layout_setup_ds_info(struct pnfs_ds_commit_info *fl_cinfo, | |
1960 | struct pnfs_layout_segment *lseg) | |
1961 | { | |
1962 | struct nfs4_ff_layout_segment *flseg = FF_LAYOUT_LSEG(lseg); | |
1963 | struct inode *inode = lseg->pls_layout->plh_inode; | |
1964 | struct pnfs_commit_array *array, *new; | |
1965 | ||
1966 | new = pnfs_alloc_commit_array(flseg->mirror_array_cnt, GFP_NOIO); | |
1967 | if (new) { | |
1968 | spin_lock(&inode->i_lock); | |
1969 | array = pnfs_add_commit_array(fl_cinfo, new, lseg); | |
1970 | spin_unlock(&inode->i_lock); | |
1971 | if (array != new) | |
1972 | pnfs_free_commit_array(new); | |
1973 | } | |
1974 | } | |
1975 | ||
a9901899 TM |
1976 | static void |
1977 | ff_layout_release_ds_info(struct pnfs_ds_commit_info *fl_cinfo, | |
1978 | struct inode *inode) | |
1979 | { | |
1980 | spin_lock(&inode->i_lock); | |
1981 | pnfs_generic_ds_cinfo_destroy(fl_cinfo); | |
1982 | spin_unlock(&inode->i_lock); | |
1983 | } | |
1984 | ||
d67ae825 | 1985 | static void |
fc87701b | 1986 | ff_layout_free_deviceid_node(struct nfs4_deviceid_node *d) |
d67ae825 TH |
1987 | { |
1988 | nfs4_ff_layout_free_deviceid(container_of(d, struct nfs4_ff_layout_ds, | |
1989 | id_node)); | |
1990 | } | |
1991 | ||
5ba6a09e | 1992 | static int ff_layout_encode_ioerr(struct xdr_stream *xdr, |
5b9b3c85 TM |
1993 | const struct nfs4_layoutreturn_args *args, |
1994 | const struct nfs4_flexfile_layoutreturn_args *ff_args) | |
d67ae825 | 1995 | { |
d67ae825 | 1996 | __be32 *start; |
d67ae825 TH |
1997 | |
1998 | start = xdr_reserve_space(xdr, 4); | |
1999 | if (unlikely(!start)) | |
2000 | return -E2BIG; | |
2001 | ||
5b9b3c85 | 2002 | *start = cpu_to_be32(ff_args->num_errors); |
d67ae825 | 2003 | /* This assume we always return _ALL_ layouts */ |
5b9b3c85 | 2004 | return ff_layout_encode_ds_ioerr(xdr, &ff_args->errors); |
d67ae825 TH |
2005 | } |
2006 | ||
230bc962 TM |
2007 | static void |
2008 | encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) | |
2009 | { | |
ab6e9aaf | 2010 | WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0); |
230bc962 TM |
2011 | } |
2012 | ||
2013 | static void | |
2014 | ff_layout_encode_ff_iostat_head(struct xdr_stream *xdr, | |
2015 | const nfs4_stateid *stateid, | |
2016 | const struct nfs42_layoutstat_devinfo *devinfo) | |
2017 | { | |
2018 | __be32 *p; | |
2019 | ||
2020 | p = xdr_reserve_space(xdr, 8 + 8); | |
2021 | p = xdr_encode_hyper(p, devinfo->offset); | |
2022 | p = xdr_encode_hyper(p, devinfo->length); | |
2023 | encode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); | |
2024 | p = xdr_reserve_space(xdr, 4*8); | |
2025 | p = xdr_encode_hyper(p, devinfo->read_count); | |
2026 | p = xdr_encode_hyper(p, devinfo->read_bytes); | |
2027 | p = xdr_encode_hyper(p, devinfo->write_count); | |
2028 | p = xdr_encode_hyper(p, devinfo->write_bytes); | |
2029 | encode_opaque_fixed(xdr, devinfo->dev_id.data, NFS4_DEVICEID4_SIZE); | |
2030 | } | |
2031 | ||
2032 | static void | |
2033 | ff_layout_encode_ff_iostat(struct xdr_stream *xdr, | |
2034 | const nfs4_stateid *stateid, | |
2035 | const struct nfs42_layoutstat_devinfo *devinfo) | |
2036 | { | |
2037 | ff_layout_encode_ff_iostat_head(xdr, stateid, devinfo); | |
2038 | ff_layout_encode_ff_layoutupdate(xdr, devinfo, | |
2039 | devinfo->ld_private.data); | |
2040 | } | |
2041 | ||
d67ae825 | 2042 | /* report nothing for now */ |
230bc962 TM |
2043 | static void ff_layout_encode_iostats_array(struct xdr_stream *xdr, |
2044 | const struct nfs4_layoutreturn_args *args, | |
2045 | struct nfs4_flexfile_layoutreturn_args *ff_args) | |
d67ae825 TH |
2046 | { |
2047 | __be32 *p; | |
230bc962 | 2048 | int i; |
d67ae825 TH |
2049 | |
2050 | p = xdr_reserve_space(xdr, 4); | |
230bc962 TM |
2051 | *p = cpu_to_be32(ff_args->num_dev); |
2052 | for (i = 0; i < ff_args->num_dev; i++) | |
2053 | ff_layout_encode_ff_iostat(xdr, | |
2054 | &args->layout->plh_stateid, | |
2055 | &ff_args->devinfo[i]); | |
2056 | } | |
2057 | ||
2058 | static void | |
2059 | ff_layout_free_iostats_array(struct nfs42_layoutstat_devinfo *devinfo, | |
2060 | unsigned int num_entries) | |
2061 | { | |
2062 | unsigned int i; | |
2063 | ||
2064 | for (i = 0; i < num_entries; i++) { | |
2065 | if (!devinfo[i].ld_private.ops) | |
2066 | continue; | |
2067 | if (!devinfo[i].ld_private.ops->free) | |
2068 | continue; | |
2069 | devinfo[i].ld_private.ops->free(&devinfo[i].ld_private); | |
2070 | } | |
d67ae825 TH |
2071 | } |
2072 | ||
2073 | static struct nfs4_deviceid_node * | |
2074 | ff_layout_alloc_deviceid_node(struct nfs_server *server, | |
2075 | struct pnfs_device *pdev, gfp_t gfp_flags) | |
2076 | { | |
2077 | struct nfs4_ff_layout_ds *dsaddr; | |
2078 | ||
2079 | dsaddr = nfs4_ff_alloc_deviceid_node(server, pdev, gfp_flags); | |
2080 | if (!dsaddr) | |
2081 | return NULL; | |
2082 | return &dsaddr->id_node; | |
2083 | } | |
2084 | ||
2085 | static void | |
94e5c571 | 2086 | ff_layout_encode_layoutreturn(struct xdr_stream *xdr, |
5b9b3c85 TM |
2087 | const void *voidargs, |
2088 | const struct nfs4_xdr_opaque_data *ff_opaque) | |
d67ae825 | 2089 | { |
5b9b3c85 | 2090 | const struct nfs4_layoutreturn_args *args = voidargs; |
5ba6a09e | 2091 | struct nfs4_flexfile_layoutreturn_args *ff_args = ff_opaque->data; |
d9152114 TM |
2092 | struct xdr_buf tmp_buf = { |
2093 | .head = { | |
2094 | [0] = { | |
2095 | .iov_base = page_address(ff_args->pages[0]), | |
2096 | }, | |
2097 | }, | |
2098 | .buflen = PAGE_SIZE, | |
2099 | }; | |
2100 | struct xdr_stream tmp_xdr; | |
d67ae825 TH |
2101 | __be32 *start; |
2102 | ||
2103 | dprintk("%s: Begin\n", __func__); | |
d67ae825 | 2104 | |
0ccc61b1 | 2105 | xdr_init_encode(&tmp_xdr, &tmp_buf, NULL, NULL); |
d9152114 TM |
2106 | |
2107 | ff_layout_encode_ioerr(&tmp_xdr, args, ff_args); | |
2108 | ff_layout_encode_iostats_array(&tmp_xdr, args, ff_args); | |
2109 | ||
2110 | start = xdr_reserve_space(xdr, 4); | |
2111 | *start = cpu_to_be32(tmp_buf.len); | |
2112 | xdr_write_pages(xdr, ff_args->pages, 0, tmp_buf.len); | |
082fa37d | 2113 | |
d67ae825 TH |
2114 | dprintk("%s: Return\n", __func__); |
2115 | } | |
2116 | ||
5b9b3c85 TM |
2117 | static void |
2118 | ff_layout_free_layoutreturn(struct nfs4_xdr_opaque_data *args) | |
2119 | { | |
2120 | struct nfs4_flexfile_layoutreturn_args *ff_args; | |
2121 | ||
2122 | if (!args->data) | |
2123 | return; | |
2124 | ff_args = args->data; | |
2125 | args->data = NULL; | |
2126 | ||
2127 | ff_layout_free_ds_ioerr(&ff_args->errors); | |
230bc962 | 2128 | ff_layout_free_iostats_array(ff_args->devinfo, ff_args->num_dev); |
5b9b3c85 | 2129 | |
d9152114 | 2130 | put_page(ff_args->pages[0]); |
5b9b3c85 TM |
2131 | kfree(ff_args); |
2132 | } | |
2133 | ||
2e54b9b1 | 2134 | static const struct nfs4_xdr_opaque_ops layoutreturn_ops = { |
5b9b3c85 TM |
2135 | .encode = ff_layout_encode_layoutreturn, |
2136 | .free = ff_layout_free_layoutreturn, | |
2137 | }; | |
2138 | ||
2139 | static int | |
2140 | ff_layout_prepare_layoutreturn(struct nfs4_layoutreturn_args *args) | |
2141 | { | |
2142 | struct nfs4_flexfile_layoutreturn_args *ff_args; | |
230bc962 | 2143 | struct nfs4_flexfile_layout *ff_layout = FF_LAYOUT_FROM_HDR(args->layout); |
5b9b3c85 TM |
2144 | |
2145 | ff_args = kmalloc(sizeof(*ff_args), GFP_KERNEL); | |
2146 | if (!ff_args) | |
d9152114 TM |
2147 | goto out_nomem; |
2148 | ff_args->pages[0] = alloc_page(GFP_KERNEL); | |
2149 | if (!ff_args->pages[0]) | |
2150 | goto out_nomem_free; | |
5b9b3c85 TM |
2151 | |
2152 | INIT_LIST_HEAD(&ff_args->errors); | |
2153 | ff_args->num_errors = ff_layout_fetch_ds_ioerr(args->layout, | |
2154 | &args->range, &ff_args->errors, | |
2155 | FF_LAYOUTRETURN_MAXERR); | |
2156 | ||
230bc962 TM |
2157 | spin_lock(&args->inode->i_lock); |
2158 | ff_args->num_dev = ff_layout_mirror_prepare_stats(&ff_layout->generic_hdr, | |
2159 | &ff_args->devinfo[0], ARRAY_SIZE(ff_args->devinfo)); | |
2160 | spin_unlock(&args->inode->i_lock); | |
2161 | ||
5b9b3c85 TM |
2162 | args->ld_private->ops = &layoutreturn_ops; |
2163 | args->ld_private->data = ff_args; | |
2164 | return 0; | |
d9152114 TM |
2165 | out_nomem_free: |
2166 | kfree(ff_args); | |
2167 | out_nomem: | |
2168 | return -ENOMEM; | |
5b9b3c85 TM |
2169 | } |
2170 | ||
f0922a6c TM |
2171 | #ifdef CONFIG_NFS_V4_2 |
2172 | void | |
2173 | ff_layout_send_layouterror(struct pnfs_layout_segment *lseg) | |
2174 | { | |
2175 | struct pnfs_layout_hdr *lo = lseg->pls_layout; | |
2176 | struct nfs42_layout_error *errors; | |
2177 | LIST_HEAD(head); | |
2178 | ||
2179 | if (!nfs_server_capable(lo->plh_inode, NFS_CAP_LAYOUTERROR)) | |
2180 | return; | |
2181 | ff_layout_fetch_ds_ioerr(lo, &lseg->pls_range, &head, -1); | |
2182 | if (list_empty(&head)) | |
2183 | return; | |
2184 | ||
2185 | errors = kmalloc_array(NFS42_LAYOUTERROR_MAX, | |
2186 | sizeof(*errors), GFP_NOFS); | |
2187 | if (errors != NULL) { | |
2188 | const struct nfs4_ff_layout_ds_err *pos; | |
2189 | size_t n = 0; | |
2190 | ||
2191 | list_for_each_entry(pos, &head, list) { | |
2192 | errors[n].offset = pos->offset; | |
2193 | errors[n].length = pos->length; | |
2194 | nfs4_stateid_copy(&errors[n].stateid, &pos->stateid); | |
2195 | errors[n].errors[0].dev_id = pos->deviceid; | |
2196 | errors[n].errors[0].status = pos->status; | |
2197 | errors[n].errors[0].opnum = pos->opnum; | |
2198 | n++; | |
2199 | if (!list_is_last(&pos->list, &head) && | |
2200 | n < NFS42_LAYOUTERROR_MAX) | |
2201 | continue; | |
2202 | if (nfs42_proc_layouterror(lseg, errors, n) < 0) | |
2203 | break; | |
2204 | n = 0; | |
2205 | } | |
2206 | kfree(errors); | |
2207 | } | |
2208 | ff_layout_free_ds_ioerr(&head); | |
2209 | } | |
2210 | #else | |
2211 | void | |
2212 | ff_layout_send_layouterror(struct pnfs_layout_segment *lseg) | |
2213 | { | |
2214 | } | |
2215 | #endif | |
2216 | ||
27c43064 PT |
2217 | static int |
2218 | ff_layout_ntop4(const struct sockaddr *sap, char *buf, const size_t buflen) | |
2219 | { | |
2220 | const struct sockaddr_in *sin = (struct sockaddr_in *)sap; | |
2221 | ||
2222 | return snprintf(buf, buflen, "%pI4", &sin->sin_addr); | |
2223 | } | |
2224 | ||
2225 | static size_t | |
2226 | ff_layout_ntop6_noscopeid(const struct sockaddr *sap, char *buf, | |
2227 | const int buflen) | |
2228 | { | |
2229 | const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap; | |
2230 | const struct in6_addr *addr = &sin6->sin6_addr; | |
2231 | ||
2232 | /* | |
2233 | * RFC 4291, Section 2.2.2 | |
2234 | * | |
2235 | * Shorthanded ANY address | |
2236 | */ | |
2237 | if (ipv6_addr_any(addr)) | |
2238 | return snprintf(buf, buflen, "::"); | |
2239 | ||
2240 | /* | |
2241 | * RFC 4291, Section 2.2.2 | |
2242 | * | |
2243 | * Shorthanded loopback address | |
2244 | */ | |
2245 | if (ipv6_addr_loopback(addr)) | |
2246 | return snprintf(buf, buflen, "::1"); | |
2247 | ||
2248 | /* | |
2249 | * RFC 4291, Section 2.2.3 | |
2250 | * | |
2251 | * Special presentation address format for mapped v4 | |
2252 | * addresses. | |
2253 | */ | |
2254 | if (ipv6_addr_v4mapped(addr)) | |
2255 | return snprintf(buf, buflen, "::ffff:%pI4", | |
2256 | &addr->s6_addr32[3]); | |
2257 | ||
2258 | /* | |
2259 | * RFC 4291, Section 2.2.1 | |
2260 | */ | |
2261 | return snprintf(buf, buflen, "%pI6c", addr); | |
2262 | } | |
2263 | ||
2264 | /* Derived from rpc_sockaddr2uaddr */ | |
2265 | static void | |
2266 | ff_layout_encode_netaddr(struct xdr_stream *xdr, struct nfs4_pnfs_ds_addr *da) | |
2267 | { | |
2268 | struct sockaddr *sap = (struct sockaddr *)&da->da_addr; | |
2269 | char portbuf[RPCBIND_MAXUADDRPLEN]; | |
2270 | char addrbuf[RPCBIND_MAXUADDRLEN]; | |
2271 | char *netid; | |
2272 | unsigned short port; | |
2273 | int len, netid_len; | |
2274 | __be32 *p; | |
2275 | ||
2276 | switch (sap->sa_family) { | |
2277 | case AF_INET: | |
2278 | if (ff_layout_ntop4(sap, addrbuf, sizeof(addrbuf)) == 0) | |
2279 | return; | |
2280 | port = ntohs(((struct sockaddr_in *)sap)->sin_port); | |
2281 | netid = "tcp"; | |
2282 | netid_len = 3; | |
2283 | break; | |
2284 | case AF_INET6: | |
2285 | if (ff_layout_ntop6_noscopeid(sap, addrbuf, sizeof(addrbuf)) == 0) | |
2286 | return; | |
2287 | port = ntohs(((struct sockaddr_in6 *)sap)->sin6_port); | |
2288 | netid = "tcp6"; | |
2289 | netid_len = 4; | |
2290 | break; | |
2291 | default: | |
2292 | /* we only support tcp and tcp6 */ | |
2293 | WARN_ON_ONCE(1); | |
2294 | return; | |
2295 | } | |
2296 | ||
2297 | snprintf(portbuf, sizeof(portbuf), ".%u.%u", port >> 8, port & 0xff); | |
2298 | len = strlcat(addrbuf, portbuf, sizeof(addrbuf)); | |
2299 | ||
2300 | p = xdr_reserve_space(xdr, 4 + netid_len); | |
2301 | xdr_encode_opaque(p, netid, netid_len); | |
2302 | ||
2303 | p = xdr_reserve_space(xdr, 4 + len); | |
2304 | xdr_encode_opaque(p, addrbuf, len); | |
2305 | } | |
2306 | ||
2307 | static void | |
2308 | ff_layout_encode_nfstime(struct xdr_stream *xdr, | |
2309 | ktime_t t) | |
2310 | { | |
2311 | struct timespec64 ts; | |
2312 | __be32 *p; | |
2313 | ||
2314 | p = xdr_reserve_space(xdr, 12); | |
2315 | ts = ktime_to_timespec64(t); | |
2316 | p = xdr_encode_hyper(p, ts.tv_sec); | |
2317 | *p++ = cpu_to_be32(ts.tv_nsec); | |
2318 | } | |
2319 | ||
2320 | static void | |
2321 | ff_layout_encode_io_latency(struct xdr_stream *xdr, | |
2322 | struct nfs4_ff_io_stat *stat) | |
2323 | { | |
2324 | __be32 *p; | |
2325 | ||
2326 | p = xdr_reserve_space(xdr, 5 * 8); | |
2327 | p = xdr_encode_hyper(p, stat->ops_requested); | |
2328 | p = xdr_encode_hyper(p, stat->bytes_requested); | |
2329 | p = xdr_encode_hyper(p, stat->ops_completed); | |
2330 | p = xdr_encode_hyper(p, stat->bytes_completed); | |
2331 | p = xdr_encode_hyper(p, stat->bytes_not_delivered); | |
2332 | ff_layout_encode_nfstime(xdr, stat->total_busy_time); | |
2333 | ff_layout_encode_nfstime(xdr, stat->aggregate_completion_time); | |
2334 | } | |
2335 | ||
2336 | static void | |
422c93c8 TM |
2337 | ff_layout_encode_ff_layoutupdate(struct xdr_stream *xdr, |
2338 | const struct nfs42_layoutstat_devinfo *devinfo, | |
2339 | struct nfs4_ff_layout_mirror *mirror) | |
27c43064 | 2340 | { |
27c43064 PT |
2341 | struct nfs4_pnfs_ds_addr *da; |
2342 | struct nfs4_pnfs_ds *ds = mirror->mirror_ds->ds; | |
2343 | struct nfs_fh *fh = &mirror->fh_versions[0]; | |
422c93c8 | 2344 | __be32 *p; |
27c43064 PT |
2345 | |
2346 | da = list_first_entry(&ds->ds_addrs, struct nfs4_pnfs_ds_addr, da_node); | |
2347 | dprintk("%s: DS %s: encoding address %s\n", | |
2348 | __func__, ds->ds_remotestr, da->da_remotestr); | |
27c43064 PT |
2349 | /* netaddr4 */ |
2350 | ff_layout_encode_netaddr(xdr, da); | |
2351 | /* nfs_fh4 */ | |
2352 | p = xdr_reserve_space(xdr, 4 + fh->size); | |
2353 | xdr_encode_opaque(p, fh->data, fh->size); | |
2354 | /* ff_io_latency4 read */ | |
2355 | spin_lock(&mirror->lock); | |
2356 | ff_layout_encode_io_latency(xdr, &mirror->read_stat.io_stat); | |
2357 | /* ff_io_latency4 write */ | |
2358 | ff_layout_encode_io_latency(xdr, &mirror->write_stat.io_stat); | |
2359 | spin_unlock(&mirror->lock); | |
2360 | /* nfstime4 */ | |
2361 | ff_layout_encode_nfstime(xdr, ktime_sub(ktime_get(), mirror->start_time)); | |
2362 | /* bool */ | |
2363 | p = xdr_reserve_space(xdr, 4); | |
2364 | *p = cpu_to_be32(false); | |
422c93c8 TM |
2365 | } |
2366 | ||
2367 | static void | |
2368 | ff_layout_encode_layoutstats(struct xdr_stream *xdr, const void *args, | |
2369 | const struct nfs4_xdr_opaque_data *opaque) | |
2370 | { | |
2371 | struct nfs42_layoutstat_devinfo *devinfo = container_of(opaque, | |
2372 | struct nfs42_layoutstat_devinfo, ld_private); | |
2373 | __be32 *start; | |
2374 | ||
2375 | /* layoutupdate length */ | |
2376 | start = xdr_reserve_space(xdr, 4); | |
2377 | ff_layout_encode_ff_layoutupdate(xdr, devinfo, opaque->data); | |
27c43064 PT |
2378 | |
2379 | *start = cpu_to_be32((xdr->p - start - 1) * 4); | |
2380 | } | |
2381 | ||
422c93c8 TM |
2382 | static void |
2383 | ff_layout_free_layoutstats(struct nfs4_xdr_opaque_data *opaque) | |
2384 | { | |
2385 | struct nfs4_ff_layout_mirror *mirror = opaque->data; | |
2386 | ||
2387 | ff_layout_put_mirror(mirror); | |
2388 | } | |
2389 | ||
2390 | static const struct nfs4_xdr_opaque_ops layoutstat_ops = { | |
2391 | .encode = ff_layout_encode_layoutstats, | |
2392 | .free = ff_layout_free_layoutstats, | |
2393 | }; | |
2394 | ||
266d12d4 | 2395 | static int |
08e2e5bc TM |
2396 | ff_layout_mirror_prepare_stats(struct pnfs_layout_hdr *lo, |
2397 | struct nfs42_layoutstat_devinfo *devinfo, | |
266d12d4 | 2398 | int dev_limit) |
ad4dc53e | 2399 | { |
266d12d4 | 2400 | struct nfs4_flexfile_layout *ff_layout = FF_LAYOUT_FROM_HDR(lo); |
ad4dc53e PT |
2401 | struct nfs4_ff_layout_mirror *mirror; |
2402 | struct nfs4_deviceid_node *dev; | |
266d12d4 | 2403 | int i = 0; |
ad4dc53e | 2404 | |
266d12d4 TM |
2405 | list_for_each_entry(mirror, &ff_layout->mirrors, mirrors) { |
2406 | if (i >= dev_limit) | |
ad4dc53e | 2407 | break; |
65990d1a | 2408 | if (IS_ERR_OR_NULL(mirror->mirror_ds)) |
27c43064 | 2409 | continue; |
06946c6a TM |
2410 | if (!test_and_clear_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags)) |
2411 | continue; | |
266d12d4 | 2412 | /* mirror refcount put in cleanup_layoutstats */ |
81a090b9 | 2413 | if (!refcount_inc_not_zero(&mirror->ref)) |
266d12d4 TM |
2414 | continue; |
2415 | dev = &mirror->mirror_ds->id_node; | |
ad4dc53e | 2416 | memcpy(&devinfo->dev_id, &dev->deviceid, NFS4_DEVICEID4_SIZE); |
266d12d4 TM |
2417 | devinfo->offset = 0; |
2418 | devinfo->length = NFS4_MAX_UINT64; | |
2f8220c1 | 2419 | spin_lock(&mirror->lock); |
d099d7b8 | 2420 | devinfo->read_count = mirror->read_stat.io_stat.ops_completed; |
ad4dc53e | 2421 | devinfo->read_bytes = mirror->read_stat.io_stat.bytes_completed; |
d099d7b8 | 2422 | devinfo->write_count = mirror->write_stat.io_stat.ops_completed; |
ad4dc53e | 2423 | devinfo->write_bytes = mirror->write_stat.io_stat.bytes_completed; |
2f8220c1 | 2424 | spin_unlock(&mirror->lock); |
ad4dc53e | 2425 | devinfo->layout_type = LAYOUT_FLEX_FILES; |
422c93c8 TM |
2426 | devinfo->ld_private.ops = &layoutstat_ops; |
2427 | devinfo->ld_private.data = mirror; | |
ad4dc53e | 2428 | |
08e2e5bc | 2429 | devinfo++; |
266d12d4 | 2430 | i++; |
ad4dc53e | 2431 | } |
266d12d4 | 2432 | return i; |
ad4dc53e PT |
2433 | } |
2434 | ||
2435 | static int | |
2436 | ff_layout_prepare_layoutstats(struct nfs42_layoutstat_args *args) | |
2437 | { | |
266d12d4 | 2438 | struct nfs4_flexfile_layout *ff_layout; |
08e2e5bc | 2439 | const int dev_count = PNFS_LAYOUTSTATS_MAXDEV; |
ad4dc53e | 2440 | |
ad4dc53e | 2441 | /* For now, send at most PNFS_LAYOUTSTATS_MAXDEV statistics */ |
266d12d4 | 2442 | args->devinfo = kmalloc_array(dev_count, sizeof(*args->devinfo), GFP_NOIO); |
ad4dc53e PT |
2443 | if (!args->devinfo) |
2444 | return -ENOMEM; | |
2445 | ||
ad4dc53e | 2446 | spin_lock(&args->inode->i_lock); |
08e2e5bc TM |
2447 | ff_layout = FF_LAYOUT_FROM_HDR(NFS_I(args->inode)->layout); |
2448 | args->num_dev = ff_layout_mirror_prepare_stats(&ff_layout->generic_hdr, | |
2449 | &args->devinfo[0], dev_count); | |
ad4dc53e | 2450 | spin_unlock(&args->inode->i_lock); |
46c98c6d TM |
2451 | if (!args->num_dev) { |
2452 | kfree(args->devinfo); | |
2453 | args->devinfo = NULL; | |
2454 | return -ENOENT; | |
2455 | } | |
ad4dc53e PT |
2456 | |
2457 | return 0; | |
2458 | } | |
2459 | ||
76b2a303 TM |
2460 | static int |
2461 | ff_layout_set_layoutdriver(struct nfs_server *server, | |
2462 | const struct nfs_fh *dummy) | |
2463 | { | |
2464 | #if IS_ENABLED(CONFIG_NFS_V4_2) | |
2465 | server->caps |= NFS_CAP_LAYOUTSTATS; | |
2466 | #endif | |
2467 | return 0; | |
2468 | } | |
2469 | ||
9c455a8c TM |
2470 | static const struct pnfs_commit_ops ff_layout_commit_ops = { |
2471 | .setup_ds_info = ff_layout_setup_ds_info, | |
2472 | .release_ds_info = ff_layout_release_ds_info, | |
2473 | .mark_request_commit = pnfs_layout_mark_request_commit, | |
2474 | .clear_request_commit = pnfs_generic_clear_request_commit, | |
2475 | .scan_commit_lists = pnfs_generic_scan_commit_lists, | |
2476 | .recover_commit_reqs = pnfs_generic_recover_commit_reqs, | |
2477 | .commit_pagelist = ff_layout_commit_pagelist, | |
2478 | }; | |
2479 | ||
d67ae825 TH |
2480 | static struct pnfs_layoutdriver_type flexfilelayout_type = { |
2481 | .id = LAYOUT_FLEX_FILES, | |
2482 | .name = "LAYOUT_FLEX_FILES", | |
2483 | .owner = THIS_MODULE, | |
f86c3ac5 | 2484 | .flags = PNFS_LAYOUTGET_ON_OPEN, |
28ced9a8 | 2485 | .max_layoutget_response = 4096, /* 1 page or so... */ |
76b2a303 | 2486 | .set_layoutdriver = ff_layout_set_layoutdriver, |
d67ae825 TH |
2487 | .alloc_layout_hdr = ff_layout_alloc_layout_hdr, |
2488 | .free_layout_hdr = ff_layout_free_layout_hdr, | |
2489 | .alloc_lseg = ff_layout_alloc_lseg, | |
2490 | .free_lseg = ff_layout_free_lseg, | |
0762ed2c | 2491 | .add_lseg = ff_layout_add_lseg, |
d67ae825 TH |
2492 | .pg_read_ops = &ff_layout_pg_read_ops, |
2493 | .pg_write_ops = &ff_layout_pg_write_ops, | |
2494 | .get_ds_info = ff_layout_get_ds_info, | |
fc87701b | 2495 | .free_deviceid_node = ff_layout_free_deviceid_node, |
d67ae825 TH |
2496 | .read_pagelist = ff_layout_read_pagelist, |
2497 | .write_pagelist = ff_layout_write_pagelist, | |
2498 | .alloc_deviceid_node = ff_layout_alloc_deviceid_node, | |
5b9b3c85 | 2499 | .prepare_layoutreturn = ff_layout_prepare_layoutreturn, |
5bb89b47 | 2500 | .sync = pnfs_nfs_generic_sync, |
ad4dc53e | 2501 | .prepare_layoutstats = ff_layout_prepare_layoutstats, |
d67ae825 TH |
2502 | }; |
2503 | ||
2504 | static int __init nfs4flexfilelayout_init(void) | |
2505 | { | |
2506 | printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Registering...\n", | |
2507 | __func__); | |
2508 | return pnfs_register_layoutdriver(&flexfilelayout_type); | |
2509 | } | |
2510 | ||
2511 | static void __exit nfs4flexfilelayout_exit(void) | |
2512 | { | |
2513 | printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Unregistering...\n", | |
2514 | __func__); | |
2515 | pnfs_unregister_layoutdriver(&flexfilelayout_type); | |
2516 | } | |
2517 | ||
2518 | MODULE_ALIAS("nfs-layouttype4-4"); | |
2519 | ||
2520 | MODULE_LICENSE("GPL"); | |
2521 | MODULE_DESCRIPTION("The NFSv4 flexfile layout driver"); | |
2522 | ||
2523 | module_init(nfs4flexfilelayout_init); | |
2524 | module_exit(nfs4flexfilelayout_exit); | |
33344e0f TM |
2525 | |
2526 | module_param(io_maxretrans, ushort, 0644); | |
2527 | MODULE_PARM_DESC(io_maxretrans, "The number of times the NFSv4.1 client " | |
2528 | "retries an I/O request before returning an error. "); |