1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2001-2005 Cluster File Systems, Inc.
5 * Author: Wang Di <wangdi@clusterfs.com>
7 * This file is part of the Lustre file system, http://www.lustre.org
8 * Lustre is a trademark of Cluster File Systems, Inc.
10 * You may have signed or agreed to another license before downloading
11 * this software. If so, you are bound by the terms and conditions
12 * of that agreement, and the following does not apply to you. See the
13 * LICENSE file included with this distribution for more information.
15 * If you did not agree to a different license, then this copy of Lustre
16 * is open source software; you can redistribute it and/or modify it
17 * under the terms of version 2 of the GNU General Public License as
18 * published by the Free Software Foundation.
20 * In either case, Lustre is distributed in the hope that it will be
21 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
22 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * license text for more details.
27 # define EXPORT_SYMTAB
29 #define DEBUG_SUBSYSTEM S_LOV
32 #include <asm/div64.h>
33 #include <libcfs/libcfs.h>
35 #include <liblustre.h>
38 #include <obd_class.h>
40 #include <lustre/lustre_idl.h>
41 #include <lustre_log.h>
43 #include "lov_internal.h"
45 struct lovea_unpack_args {
46 struct lov_stripe_md *lsm;
50 static int lsm_lmm_verify_common(struct lov_mds_md *lmm, int lmm_bytes,
54 if (stripe_count == 0) {
55 CERROR("bad stripe count %d\n", stripe_count);
56 lov_dump_lmm_v1(D_WARNING, lmm);
60 if (lmm->lmm_object_id == 0) {
61 CERROR("zero object id\n");
62 lov_dump_lmm_v1(D_WARNING, lmm);
66 if (lmm->lmm_pattern != cpu_to_le32(LOV_PATTERN_RAID0)) {
67 CERROR("bad striping pattern\n");
68 lov_dump_lmm_v1(D_WARNING, lmm);
72 if (lmm->lmm_stripe_size == 0 ||
73 (__u64)le32_to_cpu(lmm->lmm_stripe_size)*stripe_count > 0xffffffff){
74 CERROR("bad stripe size %u\n",
75 le32_to_cpu(lmm->lmm_stripe_size));
76 lov_dump_lmm_v1(D_WARNING, lmm);
82 static void lsm_unpackmd_common(struct lov_stripe_md *lsm,
83 struct lov_mds_md *lmm)
85 lsm->lsm_object_id = le64_to_cpu(lmm->lmm_object_id);
86 lsm->lsm_object_gr = le64_to_cpu(lmm->lmm_object_gr);
87 lsm->lsm_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
88 lsm->lsm_pattern = le32_to_cpu(lmm->lmm_pattern);
92 lsm_stripe_by_index_plain(struct lov_stripe_md *lsm, int *stripeno,
93 obd_off *lov_off, unsigned long *swidth)
96 *swidth = (ulong)lsm->lsm_stripe_size * lsm->lsm_stripe_count;
100 lsm_stripe_by_offset_plain(struct lov_stripe_md *lsm, int *stripeno,
101 obd_off *lov_off, unsigned long *swidth)
104 *swidth = (ulong)lsm->lsm_stripe_size * lsm->lsm_stripe_count;
108 lsm_stripe_offset_by_index_plain(struct lov_stripe_md *lsm,
115 lsm_stripe_offset_by_offset_plain(struct lov_stripe_md *lsm,
122 lsm_stripe_index_by_offset_plain(struct lov_stripe_md *lsm,
128 static void lsm_free_plain(struct lov_stripe_md *lsm)
130 OBD_FREE(lsm, lov_stripe_md_size(lsm->lsm_stripe_count));
133 static int lsm_revalidate_plain(struct lov_stripe_md *lsm,
134 struct obd_device *obd)
139 static int lsm_destroy_plain(struct lov_stripe_md *lsm, struct obdo *oa,
140 struct obd_export *md_exp)
145 static int lsm_lmm_verify_plain(struct lov_mds_md *lmm, int lmm_bytes,
148 if (lmm_bytes < sizeof(*lmm)) {
149 CERROR("lov_mds_md too small: %d, need at least %d\n",
150 lmm_bytes, (int)sizeof(*lmm));
154 *stripe_count = le32_to_cpu(lmm->lmm_stripe_count);
156 if (lmm_bytes < lov_mds_md_v1_size(*stripe_count)) {
157 CERROR("LOV EA too small: %d, need %d\n",
158 lmm_bytes, lov_mds_md_v1_size(*stripe_count));
159 lov_dump_lmm_v1(D_WARNING, lmm);
163 return lsm_lmm_verify_common(lmm, lmm_bytes, *stripe_count);
166 int lsm_unpackmd_plain(struct lov_obd *lov, struct lov_stripe_md *lsm,
167 struct lov_mds_md_v1 *lmm)
169 struct lov_oinfo *loi;
172 lsm_unpackmd_common(lsm, lmm);
174 for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++) {
175 /* XXX LOV STACKING call down to osc_unpackmd() */
176 loi->loi_id = le64_to_cpu(lmm->lmm_objects[i].l_object_id);
177 loi->loi_gr = le64_to_cpu(lmm->lmm_objects[i].l_object_gr);
178 loi->loi_ost_idx = le32_to_cpu(lmm->lmm_objects[i].l_ost_idx);
179 loi->loi_ost_gen = le32_to_cpu(lmm->lmm_objects[i].l_ost_gen);
180 if (loi->loi_ost_idx > lov->desc.ld_tgt_count) {
181 CERROR("OST index %d more than OST count %d\n",
182 loi->loi_ost_idx, lov->desc.ld_tgt_count);
183 lov_dump_lmm_v1(D_WARNING, lmm);
186 if (!lov->lov_tgts[loi->loi_ost_idx]) {
187 CERROR("OST index %d missing\n", loi->loi_ost_idx);
188 lov_dump_lmm_v1(D_WARNING, lmm);
197 struct lsm_operations lsm_plain_ops = {
198 .lsm_free = lsm_free_plain,
199 .lsm_destroy = lsm_destroy_plain,
200 .lsm_stripe_by_index = lsm_stripe_by_index_plain,
201 .lsm_stripe_by_offset = lsm_stripe_by_offset_plain,
202 .lsm_revalidate = lsm_revalidate_plain,
203 .lsm_stripe_offset_by_index = lsm_stripe_offset_by_index_plain,
204 .lsm_stripe_offset_by_offset = lsm_stripe_offset_by_offset_plain,
205 .lsm_stripe_index_by_offset = lsm_stripe_index_by_offset_plain,
206 .lsm_lmm_verify = lsm_lmm_verify_plain,
207 .lsm_unpackmd = lsm_unpackmd_plain,
210 struct lov_extent *lovea_off2le(struct lov_stripe_md *lsm, obd_off lov_off)
212 struct lov_array_info *lai;
213 struct lov_extent *le;
216 LASSERT(lsm->lsm_array != NULL);
217 lai = lsm->lsm_array;
218 LASSERT(lai->lai_ext_count > 1);
220 for (le = lai->lai_ext_array, i = 0;
221 i < lai->lai_ext_count && le->le_start + le->le_len <= lov_off
227 CDEBUG(D_INFO, "off "LPU64" idx %d, ext "LPU64":"LPU64" idx %d sc %d\n",
228 lov_off, i, le->le_start, le->le_len, le->le_loi_idx,
229 le->le_stripe_count);
234 struct lov_extent *lovea_idx2le(struct lov_stripe_md *lsm, int stripe_no)
236 struct lov_extent *le;
237 struct lov_array_info *lai;
240 LASSERT(lsm->lsm_array != NULL);
241 LASSERT(stripe_no >= 0 && stripe_no <= lsm->lsm_stripe_count);
242 lai = lsm->lsm_array;
243 LASSERT(lai->lai_ext_count > 1);
245 for (le = lai->lai_ext_array, i = 0, stripe_index = le->le_stripe_count;
246 i < lai->lai_ext_count && stripe_index <= stripe_no &&
247 le->le_len != -1; i ++, le ++,
248 stripe_index += le->le_stripe_count) {
252 CDEBUG(D_INFO, "stripe %d idx %d, ext "LPU64":"LPU64" idx %d sc %d\n",
253 stripe_no, i, le->le_start, le->le_len, le->le_loi_idx,
254 le->le_stripe_count);
258 static void lovea_free_array_info(struct lov_stripe_md *lsm)
260 if (!lsm || !lsm->lsm_array)
263 if (lsm->lsm_array->lai_ext_array)
264 OBD_FREE(lsm->lsm_array->lai_ext_array,
265 lsm->lsm_array->lai_ext_count *
266 sizeof(struct lov_extent));
268 OBD_FREE_PTR(lsm->lsm_array);
271 static void lsm_free_join(struct lov_stripe_md *lsm)
273 lovea_free_array_info(lsm);
274 OBD_FREE(lsm, lov_stripe_md_size(lsm->lsm_stripe_count));
278 lsm_stripe_by_index_join(struct lov_stripe_md *lsm, int *stripeno,
279 obd_off *lov_off, unsigned long *swidth)
281 struct lov_extent *le;
283 LASSERT(stripeno != NULL);
285 le = lovea_idx2le(lsm, *stripeno);
287 LASSERT(le != NULL && le->le_stripe_count != 0);
289 *stripeno -= le->le_loi_idx;
292 *swidth = (ulong)lsm->lsm_stripe_size * le->le_stripe_count;
295 struct lov_extent *lov_le = lovea_off2le(lsm, *lov_off);
297 *lov_off = (*lov_off > le->le_start) ?
298 (*lov_off - le->le_start) : 0;
300 *lov_off = (*lov_off > le->le_start) ?
302 LASSERT(*lov_off != -1);
308 lsm_stripe_by_offset_join(struct lov_stripe_md *lsm, int *stripeno,
309 obd_off *lov_off, unsigned long *swidth)
311 struct lov_extent *le;
313 LASSERT(lov_off != NULL);
315 le = lovea_off2le(lsm, *lov_off);
317 LASSERT(le != NULL && le->le_stripe_count != 0);
319 *lov_off = (*lov_off > le->le_start) ? (*lov_off - le->le_start) : 0;
322 *stripeno -= le->le_loi_idx;
325 *swidth = (ulong)lsm->lsm_stripe_size * le->le_stripe_count;
329 lsm_stripe_offset_by_index_join(struct lov_stripe_md *lsm,
332 struct lov_extent *le;
334 le = lovea_idx2le(lsm, stripe_index);
336 return le ? le->le_start : 0;
340 lsm_stripe_offset_by_offset_join(struct lov_stripe_md *lsm,
343 struct lov_extent *le;
345 le = lovea_off2le(lsm, lov_off);
347 return le ? le->le_start : 0;
351 lsm_stripe_index_by_offset_join(struct lov_stripe_md *lsm,
354 struct lov_extent *le = NULL;
356 le = lovea_off2le(lsm, lov_off);
358 return le ? le->le_loi_idx : 0;
361 static int lovea_unpack_array(struct llog_handle *handle,
362 struct llog_rec_hdr *rec, void *data)
364 struct lovea_unpack_args *args = (struct lovea_unpack_args *)data;
365 struct llog_array_rec *la_rec = (struct llog_array_rec*)rec;
366 struct mds_extent_desc *med = &la_rec->lmr_med;
367 struct lov_stripe_md *lsm = args->lsm;
368 int cursor = args->cursor++;
369 struct lov_mds_md *lmm;
370 struct lov_array_info *lai;
371 struct lov_oinfo * loi;
376 LASSERT(lsm->lsm_stripe_count != 0);
378 LASSERT(lsm->lsm_array != NULL);
380 lai = lsm->lsm_array;
383 lai->lai_ext_array[cursor].le_loi_idx = 0;
385 int next_loi_index = lai->lai_ext_array[cursor - 1].le_loi_idx +
386 lai->lai_ext_array[cursor - 1].le_stripe_count;
387 lai->lai_ext_array[cursor].le_loi_idx = next_loi_index;
389 /* insert extent desc into lsm extent array */
390 lai->lai_ext_array[cursor].le_start = le64_to_cpu(med->med_start);
391 lai->lai_ext_array[cursor].le_len = le64_to_cpu(med->med_len);
392 lai->lai_ext_array[cursor].le_stripe_count = lmm->lmm_stripe_count;
394 /* unpack extent's lmm to lov_oinfo array */
395 loi_index = lai->lai_ext_array[cursor].le_loi_idx;
396 loi = &lsm->lsm_oinfo[loi_index];
397 CDEBUG(D_INFO, "lovea upackmd cursor %d, loi_index %d extent "
398 LPU64":"LPU64"\n", cursor, loi_index, med->med_start,
401 for (i = 0; i < lmm->lmm_stripe_count; i ++) {
402 /* XXX LOV STACKING call down to osc_unpackmd() */
403 loi->loi_id = le64_to_cpu(lmm->lmm_objects[i].l_object_id);
404 loi->loi_gr = le64_to_cpu(lmm->lmm_objects[i].l_object_gr);
405 loi->loi_ost_idx = le32_to_cpu(lmm->lmm_objects[i].l_ost_idx);
406 loi->loi_ost_gen = le32_to_cpu(lmm->lmm_objects[i].l_ost_gen);
413 static int lsm_revalidate_join(struct lov_stripe_md *lsm,
414 struct obd_device *obd)
416 struct llog_handle *llh;
417 struct llog_ctxt *ctxt;
418 struct lovea_unpack_args args;
422 LASSERT(lsm->lsm_array != NULL);
424 /*Revalidate lsm might be called from client or MDS server.
425 *So the ctxt might be in different position
427 ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
429 ctxt = llog_get_context(obd, LLOG_LOVEA_ORIG_CTXT);
433 if (lsm->lsm_array && lsm->lsm_array->lai_ext_array)
436 CDEBUG(D_INFO, "get lsm logid: "LPU64":"LPU64"\n",
437 lsm->lsm_array->lai_array_id.lgl_oid,
438 lsm->lsm_array->lai_array_id.lgl_ogr);
439 OBD_ALLOC(lsm->lsm_array->lai_ext_array,lsm->lsm_array->lai_ext_count *
440 sizeof (struct lov_extent));
441 if (!lsm->lsm_array->lai_ext_array)
444 CDEBUG(D_INFO, "get lsm logid: "LPU64":"LPU64"\n",
445 lsm->lsm_array->lai_array_id.lgl_oid,
446 lsm->lsm_array->lai_array_id.lgl_ogr);
448 rc = llog_create(ctxt, &llh, &lsm->lsm_array->lai_array_id, NULL);
454 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
456 rc = llog_process(llh, lovea_unpack_array, &args, NULL);
457 rc2 = llog_close(llh);
462 lovea_free_array_info(lsm);
466 int lsm_destroy_join(struct lov_stripe_md *lsm, struct obdo *oa,
467 struct obd_export *md_exp)
469 struct llog_ctxt *ctxt;
470 struct llog_handle *llh;
474 LASSERT(md_exp != NULL);
475 ctxt = llog_get_context(md_exp->exp_obd, LLOG_LOVEA_REPL_CTXT);
477 GOTO(out, rc = -EINVAL);
479 LASSERT(lsm->lsm_array != NULL);
480 /*for those orphan inode, we should keep array id*/
481 if (!(oa->o_valid & OBD_MD_FLCOOKIE))
484 LASSERT(ctxt != NULL);
485 rc = llog_create(ctxt, &llh, &lsm->lsm_array->lai_array_id,
490 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
492 rc = llog_destroy(llh);
494 llog_free_handle(llh);
499 static int lsm_lmm_verify_join(struct lov_mds_md *lmm, int lmm_bytes,
502 struct lov_mds_md_join *lmmj = (struct lov_mds_md_join *)lmm;
504 if (lmm_bytes < sizeof(*lmmj)) {
505 CERROR("lov_mds_md too small: %d, need at least %d\n",
506 lmm_bytes, (int)sizeof(*lmmj));
510 if (lmmj->lmmj_array_id.lgl_oid == 0) {
511 CERROR("zero array object id\n");
515 *stripe_count = le32_to_cpu(lmmj->lmmj_md.lmm_stripe_count);
517 return lsm_lmm_verify_common(&lmmj->lmmj_md, lmm_bytes, *stripe_count);
520 static int lovea_init_array_info(struct lov_stripe_md *lsm,
521 struct llog_logid *logid,
524 struct lov_array_info *lai;
531 lai->lai_array_id = *logid;
532 lai->lai_ext_count = extent_count;
533 lsm->lsm_array = lai;
537 static int lsm_unpackmd_join(struct lov_obd *lov, struct lov_stripe_md *lsm,
538 struct lov_mds_md *lmm)
540 struct lov_mds_md_join *lmmj = (struct lov_mds_md_join*)lmm;
544 lsm_unpackmd_common(lsm, &lmmj->lmmj_md);
546 rc = lovea_init_array_info(lsm, &lmmj->lmmj_array_id,
547 lmmj->lmmj_extent_count);
549 CERROR("Init joined lsm id"LPU64" arrary error %d",
550 lsm->lsm_object_id, rc);
557 struct lsm_operations lsm_join_ops = {
558 .lsm_free = lsm_free_join,
559 .lsm_destroy = lsm_destroy_join,
560 .lsm_stripe_by_index = lsm_stripe_by_index_join,
561 .lsm_stripe_by_offset = lsm_stripe_by_offset_join,
562 .lsm_revalidate = lsm_revalidate_join,
563 .lsm_stripe_offset_by_index = lsm_stripe_offset_by_index_join,
564 .lsm_stripe_offset_by_offset = lsm_stripe_offset_by_offset_join,
565 .lsm_stripe_index_by_offset = lsm_stripe_index_by_offset_join,
566 .lsm_lmm_verify = lsm_lmm_verify_join,
567 .lsm_unpackmd = lsm_unpackmd_join,