4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/llite/llite_lib.c
33 * Lustre Light Super operations
36 #define DEBUG_SUBSYSTEM S_LLITE
38 #include <linux/cpu.h>
39 #include <linux/module.h>
40 #include <linux/random.h>
41 #include <linux/statfs.h>
42 #include <linux/time.h>
43 #include <linux/types.h>
44 #include <libcfs/linux/linux-uuid.h>
45 #include <linux/version.h>
47 #include <linux/user_namespace.h>
48 #include <linux/delay.h>
49 #include <linux/uidgid.h>
50 #include <linux/security.h>
51 #include <linux/fs_struct.h>
53 #ifndef HAVE_CPUS_READ_LOCK
54 #include <libcfs/linux/linux-cpu.h>
56 #include <uapi/linux/lustre/lustre_ioctl.h>
57 #ifdef HAVE_UAPI_LINUX_MOUNT_H
58 #include <uapi/linux/mount.h>
61 #include <lustre_ha.h>
62 #include <lustre_dlm.h>
63 #include <lprocfs_status.h>
64 #include <lustre_disk.h>
65 #include <uapi/linux/lustre/lustre_param.h>
66 #include <lustre_log.h>
67 #include <cl_object.h>
68 #include <obd_cksum.h>
69 #include "llite_internal.h"
71 struct kmem_cache *ll_file_data_slab;
74 #define log2(n) ffz(~(n))
78 * If there is only one number of core visible to Lustre,
79 * async readahead will be disabled, to avoid massive over
80 * subscription, we use 1/2 of active cores as default max
81 * async readahead requests.
83 static inline unsigned int ll_get_ra_async_max_active(void)
85 return cfs_cpt_weight(cfs_cpt_tab, CFS_CPT_ANY) >> 1;
88 static struct ll_sb_info *ll_init_sbi(void)
90 struct ll_sb_info *sbi = NULL;
92 unsigned long lru_page_max;
101 RETURN(ERR_PTR(-ENOMEM));
103 rc = pcc_super_init(&sbi->ll_pcc_super);
107 spin_lock_init(&sbi->ll_lock);
108 mutex_init(&sbi->ll_lco.lco_lock);
109 spin_lock_init(&sbi->ll_pp_extent_lock);
110 spin_lock_init(&sbi->ll_process_lock);
111 sbi->ll_rw_stats_on = 0;
112 sbi->ll_statfs_max_age = OBD_STATFS_CACHE_SECONDS;
115 pages = si.totalram - si.totalhigh;
116 lru_page_max = pages / 2;
118 sbi->ll_ra_info.ra_async_max_active = ll_get_ra_async_max_active();
119 sbi->ll_ra_info.ll_readahead_wq =
120 cfs_cpt_bind_workqueue("ll-readahead-wq", cfs_cpt_tab,
122 sbi->ll_ra_info.ra_async_max_active);
123 if (IS_ERR(sbi->ll_ra_info.ll_readahead_wq))
124 GOTO(out_pcc, rc = PTR_ERR(sbi->ll_ra_info.ll_readahead_wq));
126 /* initialize ll_cache data */
127 sbi->ll_cache = cl_cache_init(lru_page_max);
128 if (sbi->ll_cache == NULL)
129 GOTO(out_destroy_ra, rc = -ENOMEM);
131 /* initialize foreign symlink prefix path */
132 OBD_ALLOC(sbi->ll_foreign_symlink_prefix, sizeof("/mnt/"));
133 if (sbi->ll_foreign_symlink_prefix == NULL)
134 GOTO(out_destroy_ra, rc = -ENOMEM);
135 memcpy(sbi->ll_foreign_symlink_prefix, "/mnt/", sizeof("/mnt/"));
136 sbi->ll_foreign_symlink_prefix_size = sizeof("/mnt/");
138 /* initialize foreign symlink upcall path, none by default */
139 OBD_ALLOC(sbi->ll_foreign_symlink_upcall, sizeof("none"));
140 if (sbi->ll_foreign_symlink_upcall == NULL)
141 GOTO(out_destroy_ra, rc = -ENOMEM);
142 memcpy(sbi->ll_foreign_symlink_upcall, "none", sizeof("none"));
143 sbi->ll_foreign_symlink_upcall_items = NULL;
144 sbi->ll_foreign_symlink_upcall_nb_items = 0;
145 init_rwsem(&sbi->ll_foreign_symlink_sem);
146 /* foreign symlink support (LL_SBI_FOREIGN_SYMLINK in ll_flags)
147 * not enabled by default
150 sbi->ll_ra_info.ra_max_pages =
151 min(pages / 32, SBI_DEFAULT_READ_AHEAD_MAX);
152 sbi->ll_ra_info.ra_max_pages_per_file =
153 min(sbi->ll_ra_info.ra_max_pages / 4,
154 SBI_DEFAULT_READ_AHEAD_PER_FILE_MAX);
155 sbi->ll_ra_info.ra_async_pages_per_file_threshold =
156 sbi->ll_ra_info.ra_max_pages_per_file;
157 sbi->ll_ra_info.ra_range_pages = SBI_DEFAULT_RA_RANGE_PAGES;
158 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = -1;
159 atomic_set(&sbi->ll_ra_info.ra_async_inflight, 0);
161 sbi->ll_flags |= LL_SBI_VERBOSE;
162 #ifdef ENABLE_CHECKSUM
163 sbi->ll_flags |= LL_SBI_CHECKSUM;
166 sbi->ll_flags |= LL_SBI_FLOCK;
169 #ifdef HAVE_LRU_RESIZE_SUPPORT
170 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
172 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
174 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
175 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
177 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
181 /* metadata statahead is enabled by default */
182 sbi->ll_sa_running_max = LL_SA_RUNNING_DEF;
183 sbi->ll_sa_max = LL_SA_RPC_DEF;
184 atomic_set(&sbi->ll_sa_total, 0);
185 atomic_set(&sbi->ll_sa_wrong, 0);
186 atomic_set(&sbi->ll_sa_running, 0);
187 atomic_set(&sbi->ll_agl_total, 0);
188 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
189 sbi->ll_flags |= LL_SBI_FAST_READ;
190 sbi->ll_flags |= LL_SBI_TINY_WRITE;
191 ll_sbi_set_encrypt(sbi, true);
194 sbi->ll_squash.rsi_uid = 0;
195 sbi->ll_squash.rsi_gid = 0;
196 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
197 spin_lock_init(&sbi->ll_squash.rsi_lock);
199 /* Per-filesystem file heat */
200 sbi->ll_heat_decay_weight = SBI_DEFAULT_HEAT_DECAY_WEIGHT;
201 sbi->ll_heat_period_second = SBI_DEFAULT_HEAT_PERIOD_SECOND;
204 if (sbi->ll_foreign_symlink_prefix)
205 OBD_FREE(sbi->ll_foreign_symlink_prefix, sizeof("/mnt/"));
207 cl_cache_decref(sbi->ll_cache);
208 sbi->ll_cache = NULL;
210 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
212 pcc_super_fini(&sbi->ll_pcc_super);
218 static void ll_free_sbi(struct super_block *sb)
220 struct ll_sb_info *sbi = ll_s2sbi(sb);
224 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
225 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
226 if (sbi->ll_ra_info.ll_readahead_wq)
227 destroy_workqueue(sbi->ll_ra_info.ll_readahead_wq);
228 if (sbi->ll_cache != NULL) {
229 cl_cache_decref(sbi->ll_cache);
230 sbi->ll_cache = NULL;
232 if (sbi->ll_foreign_symlink_prefix) {
233 OBD_FREE(sbi->ll_foreign_symlink_prefix,
234 sbi->ll_foreign_symlink_prefix_size);
235 sbi->ll_foreign_symlink_prefix = NULL;
237 if (sbi->ll_foreign_symlink_upcall) {
238 OBD_FREE(sbi->ll_foreign_symlink_upcall,
239 strlen(sbi->ll_foreign_symlink_upcall) +
241 sbi->ll_foreign_symlink_upcall = NULL;
243 if (sbi->ll_foreign_symlink_upcall_items) {
245 int nb_items = sbi->ll_foreign_symlink_upcall_nb_items;
246 struct ll_foreign_symlink_upcall_item *items =
247 sbi->ll_foreign_symlink_upcall_items;
249 for (i = 0 ; i < nb_items; i++)
250 if (items[i].type == STRING_TYPE)
251 OBD_FREE(items[i].string,
254 OBD_FREE_LARGE(items, nb_items *
255 sizeof(struct ll_foreign_symlink_upcall_item));
256 sbi->ll_foreign_symlink_upcall_items = NULL;
258 pcc_super_fini(&sbi->ll_pcc_super);
259 OBD_FREE(sbi, sizeof(*sbi));
264 static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
266 struct inode *root = NULL;
267 struct ll_sb_info *sbi = ll_s2sbi(sb);
268 struct obd_statfs *osfs = NULL;
269 struct ptlrpc_request *request = NULL;
270 struct obd_connect_data *data = NULL;
271 struct obd_uuid *uuid;
272 struct md_op_data *op_data;
273 struct lustre_md lmd;
275 int size, err, checksum;
278 sbi->ll_md_obd = class_name2obd(md);
279 if (!sbi->ll_md_obd) {
280 CERROR("MD %s: not setup or attached\n", md);
294 /* pass client page size via ocd_grant_blkbits, the server should report
295 * back its backend blocksize for grant calculation purpose */
296 data->ocd_grant_blkbits = PAGE_SHIFT;
298 /* indicate MDT features supported by this client */
299 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
300 OBD_CONNECT_ATTRFID | OBD_CONNECT_GRANT |
301 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
302 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
303 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
304 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
305 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
306 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
307 OBD_CONNECT_64BITHASH |
308 OBD_CONNECT_EINPROGRESS |
309 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
310 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
311 OBD_CONNECT_MAX_EASIZE |
312 OBD_CONNECT_FLOCK_DEAD |
313 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
314 OBD_CONNECT_OPEN_BY_FID |
315 OBD_CONNECT_DIR_STRIPE |
316 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM |
317 OBD_CONNECT_SUBTREE |
318 OBD_CONNECT_MULTIMODRPCS |
319 OBD_CONNECT_GRANT_PARAM |
320 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2;
322 data->ocd_connect_flags2 = OBD_CONNECT2_DIR_MIGRATE |
323 OBD_CONNECT2_SUM_STATFS |
324 OBD_CONNECT2_OVERSTRIPING |
326 OBD_CONNECT2_LOCK_CONVERT |
327 OBD_CONNECT2_ARCHIVE_ID_ARRAY |
328 OBD_CONNECT2_INC_XID |
330 OBD_CONNECT2_ASYNC_DISCARD |
332 OBD_CONNECT2_CRUSH | OBD_CONNECT2_LSEEK |
333 OBD_CONNECT2_GETATTR_PFID |
334 OBD_CONNECT2_DOM_LVB;
336 #ifdef HAVE_LRU_RESIZE_SUPPORT
337 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
338 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
340 data->ocd_connect_flags |= OBD_CONNECT_ACL_FLAGS;
342 data->ocd_cksum_types = obd_cksum_types_supported_client();
344 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
345 /* flag mdc connection as lightweight, only used for test
346 * purpose, use with care */
347 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
349 data->ocd_ibits_known = MDS_INODELOCK_FULL;
350 data->ocd_version = LUSTRE_VERSION_CODE;
352 if (sb->s_flags & SB_RDONLY)
353 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
354 if (sbi->ll_flags & LL_SBI_USER_XATTR)
355 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
358 /* Setting this indicates we correctly support S_NOSEC (See kernel
359 * commit 9e1f1de02c2275d7172e18dc4e7c2065777611bf)
361 sb->s_flags |= SB_NOSEC;
363 sbi->ll_fop = ll_select_file_operations(sbi);
365 /* always ping even if server suppress_pings */
366 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
367 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
369 obd_connect_set_secctx(data);
370 if (ll_sbi_has_encrypt(sbi))
371 obd_connect_set_enc(data);
373 #if defined(CONFIG_SECURITY)
374 data->ocd_connect_flags2 |= OBD_CONNECT2_SELINUX_POLICY;
377 data->ocd_brw_size = MD_MAX_BRW_SIZE;
379 err = obd_connect(NULL, &sbi->ll_md_exp, sbi->ll_md_obd,
380 &sbi->ll_sb_uuid, data, sbi->ll_cache);
382 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
383 "recovery, of which this client is not a "
384 "part. Please wait for recovery to complete,"
385 " abort, or time out.\n", md);
388 CERROR("cannot connect to %s: rc = %d\n", md, err);
392 sbi->ll_md_exp->exp_connect_data = *data;
394 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
395 LUSTRE_SEQ_METADATA);
397 CERROR("%s: Can't init metadata layer FID infrastructure, "
398 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
402 /* For mount, we only need fs info from MDT0, and also in DNE, it
403 * can make sure the client can be mounted as long as MDT0 is
405 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
406 ktime_get_seconds() - sbi->ll_statfs_max_age,
407 OBD_STATFS_FOR_MDT0);
409 GOTO(out_md_fid, err);
411 /* This needs to be after statfs to ensure connect has finished.
412 * Note that "data" does NOT contain the valid connect reply.
413 * If connecting to a 1.8 server there will be no LMV device, so
414 * we can access the MDC export directly and exp_connect_flags will
415 * be non-zero, but if accessing an upgraded 2.1 server it will
416 * have the correct flags filled in.
417 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
418 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
419 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
420 valid != CLIENT_CONNECT_MDT_REQD) {
423 OBD_ALLOC_WAIT(buf, PAGE_SIZE);
424 obd_connect_flags2str(buf, PAGE_SIZE,
425 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
426 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
427 "feature(s) needed for correct operation "
428 "of this client (%s). Please upgrade "
429 "server or downgrade client.\n",
430 sbi->ll_md_exp->exp_obd->obd_name, buf);
431 OBD_FREE(buf, PAGE_SIZE);
432 GOTO(out_md_fid, err = -EPROTO);
435 size = sizeof(*data);
436 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
437 KEY_CONN_DATA, &size, data);
439 CERROR("%s: Get connect data failed: rc = %d\n",
440 sbi->ll_md_exp->exp_obd->obd_name, err);
441 GOTO(out_md_fid, err);
444 LASSERT(osfs->os_bsize);
445 sb->s_blocksize = osfs->os_bsize;
446 sb->s_blocksize_bits = log2(osfs->os_bsize);
447 sb->s_magic = LL_SUPER_MAGIC;
448 sb->s_maxbytes = MAX_LFS_FILESIZE;
449 sbi->ll_namelen = osfs->os_namelen;
450 sbi->ll_mnt.mnt = current->fs->root.mnt;
452 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
453 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
454 LCONSOLE_INFO("Disabling user_xattr feature because "
455 "it is not supported on the server\n");
456 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
459 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
461 sb->s_flags |= SB_POSIXACL;
463 sbi->ll_flags |= LL_SBI_ACL;
465 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
467 sb->s_flags &= ~SB_POSIXACL;
469 sbi->ll_flags &= ~LL_SBI_ACL;
472 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
473 sbi->ll_flags |= LL_SBI_64BIT_HASH;
475 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
476 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
478 if (obd_connect_has_secctx(data))
479 sbi->ll_flags |= LL_SBI_FILE_SECCTX;
481 if (ll_sbi_has_encrypt(sbi) && !obd_connect_has_enc(data)) {
482 if (ll_sbi_has_test_dummy_encryption(sbi))
483 LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
485 sbi->ll_md_exp->exp_obd->obd_name);
486 ll_sbi_set_encrypt(sbi, false);
489 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
490 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
491 LCONSOLE_INFO("%s: disabling xattr cache due to "
492 "unknown maximum xattr size.\n", dt);
493 } else if (!sbi->ll_xattr_cache_set) {
494 /* If xattr_cache is already set (no matter 0 or 1)
495 * during processing llog, it won't be enabled here. */
496 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
497 sbi->ll_xattr_cache_enabled = 1;
501 sbi->ll_dt_obd = class_name2obd(dt);
502 if (!sbi->ll_dt_obd) {
503 CERROR("DT %s: not setup or attached\n", dt);
504 GOTO(out_md_fid, err = -ENODEV);
507 /* pass client page size via ocd_grant_blkbits, the server should report
508 * back its backend blocksize for grant calculation purpose */
509 data->ocd_grant_blkbits = PAGE_SHIFT;
511 /* indicate OST features supported by this client */
512 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
513 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
514 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
515 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
516 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
517 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
518 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
519 OBD_CONNECT_EINPROGRESS |
520 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
521 OBD_CONNECT_LAYOUTLOCK |
522 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
523 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_SHORTIO |
524 OBD_CONNECT_FLAGS2 | OBD_CONNECT_GRANT_SHRINK;
525 data->ocd_connect_flags2 = OBD_CONNECT2_LOCKAHEAD |
526 OBD_CONNECT2_INC_XID | OBD_CONNECT2_LSEEK;
528 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
529 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
531 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
532 * disabled by default, because it can still be enabled on the
533 * fly via /sys. As a consequence, we still need to come to an
534 * agreement on the supported algorithms at connect time
536 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
538 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
539 data->ocd_cksum_types = OBD_CKSUM_ADLER;
541 data->ocd_cksum_types = obd_cksum_types_supported_client();
543 #ifdef HAVE_LRU_RESIZE_SUPPORT
544 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
546 /* always ping even if server suppress_pings */
547 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
548 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
550 if (ll_sbi_has_encrypt(sbi))
551 obd_connect_set_enc(data);
553 CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
554 "ocd_grant: %d\n", data->ocd_connect_flags,
555 data->ocd_version, data->ocd_grant);
557 sbi->ll_dt_obd->obd_upcall.onu_owner = &sbi->ll_lco;
558 sbi->ll_dt_obd->obd_upcall.onu_upcall = cl_ocd_update;
560 data->ocd_brw_size = DT_MAX_BRW_SIZE;
562 err = obd_connect(NULL, &sbi->ll_dt_exp, sbi->ll_dt_obd,
563 &sbi->ll_sb_uuid, data, sbi->ll_cache);
565 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
566 "recovery, of which this client is not a "
567 "part. Please wait for recovery to "
568 "complete, abort, or time out.\n", dt);
571 CERROR("%s: Cannot connect to %s: rc = %d\n",
572 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
576 if (ll_sbi_has_encrypt(sbi) &&
577 !obd_connect_has_enc(&sbi->ll_dt_obd->u.lov.lov_ocd)) {
578 if (ll_sbi_has_test_dummy_encryption(sbi))
579 LCONSOLE_WARN("%s: server %s does not support encryption feature, encryption deactivated.\n",
581 ll_sbi_set_encrypt(sbi, false);
582 } else if (ll_sbi_has_test_dummy_encryption(sbi)) {
583 LCONSOLE_WARN("Test dummy encryption mode enabled\n");
586 sbi->ll_dt_exp->exp_connect_data = *data;
588 /* Don't change value if it was specified in the config log */
589 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages == -1) {
590 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
591 max_t(unsigned long, SBI_DEFAULT_READ_AHEAD_WHOLE_MAX,
592 (data->ocd_brw_size >> PAGE_SHIFT));
593 if (sbi->ll_ra_info.ra_max_read_ahead_whole_pages >
594 sbi->ll_ra_info.ra_max_pages_per_file)
595 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
596 sbi->ll_ra_info.ra_max_pages_per_file;
599 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
600 LUSTRE_SEQ_METADATA);
602 CERROR("%s: Can't init data layer FID infrastructure, "
603 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
607 mutex_lock(&sbi->ll_lco.lco_lock);
608 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
609 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
610 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
611 mutex_unlock(&sbi->ll_lco.lco_lock);
613 fid_zero(&sbi->ll_root_fid);
614 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
617 CERROR("cannot mds_connect: rc = %d\n", err);
618 GOTO(out_lock_cn_cb, err);
620 if (!fid_is_sane(&sbi->ll_root_fid)) {
621 CERROR("%s: Invalid root fid "DFID" during mount\n",
622 sbi->ll_md_exp->exp_obd->obd_name,
623 PFID(&sbi->ll_root_fid));
624 GOTO(out_lock_cn_cb, err = -EINVAL);
626 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
628 sb->s_op = &lustre_super_operations;
629 sb->s_xattr = ll_xattr_handlers;
630 #if THREAD_SIZE >= 8192 /*b=17630*/
631 sb->s_export_op = &lustre_export_operations;
633 #ifdef HAVE_LUSTRE_CRYPTO
634 llcrypt_set_ops(sb, &lustre_cryptops);
638 * XXX: move this to after cbd setup? */
639 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
640 if (sbi->ll_flags & LL_SBI_ACL)
641 valid |= OBD_MD_FLACL;
643 OBD_ALLOC_PTR(op_data);
645 GOTO(out_lock_cn_cb, err = -ENOMEM);
647 op_data->op_fid1 = sbi->ll_root_fid;
648 op_data->op_mode = 0;
649 op_data->op_valid = valid;
651 err = md_getattr(sbi->ll_md_exp, op_data, &request);
653 OBD_FREE_PTR(op_data);
655 CERROR("%s: md_getattr failed for root: rc = %d\n",
656 sbi->ll_md_exp->exp_obd->obd_name, err);
657 GOTO(out_lock_cn_cb, err);
660 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
661 sbi->ll_md_exp, &lmd);
663 CERROR("failed to understand root inode md: rc = %d\n", err);
664 ptlrpc_req_finished(request);
665 GOTO(out_lock_cn_cb, err);
668 LASSERT(fid_is_sane(&sbi->ll_root_fid));
669 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
670 sbi->ll_flags & LL_SBI_32BIT_API),
672 md_free_lustre_md(sbi->ll_md_exp, &lmd);
673 ptlrpc_req_finished(request);
677 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
679 CERROR("%s: bad ll_iget() for root: rc = %d\n",
680 sbi->ll_fsname, err);
684 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
685 if (sbi->ll_checksum_set) {
686 err = obd_set_info_async(NULL, sbi->ll_dt_exp,
687 sizeof(KEY_CHECKSUM), KEY_CHECKSUM,
688 sizeof(checksum), &checksum, NULL);
690 CERROR("%s: Set checksum failed: rc = %d\n",
691 sbi->ll_dt_exp->exp_obd->obd_name, err);
697 sb->s_root = d_make_root(root);
698 if (sb->s_root == NULL) {
700 CERROR("%s: can't make root dentry: rc = %d\n",
701 sbi->ll_fsname, err);
705 sbi->ll_sdev_orig = sb->s_dev;
707 /* We set sb->s_dev equal on all lustre clients in order to support
708 * NFS export clustering. NFSD requires that the FSID be the same
710 /* s_dev is also used in lt_compare() to compare two fs, but that is
711 * only a node-local comparison. */
712 uuid = obd_get_uuid(sbi->ll_md_exp);
714 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
721 if (sbi->ll_dt_obd) {
722 err = sysfs_create_link(&sbi->ll_kset.kobj,
723 &sbi->ll_dt_obd->obd_kset.kobj,
724 sbi->ll_dt_obd->obd_type->typ_name);
726 CERROR("%s: could not register %s in llite: rc = %d\n",
727 dt, sbi->ll_fsname, err);
732 if (sbi->ll_md_obd) {
733 err = sysfs_create_link(&sbi->ll_kset.kobj,
734 &sbi->ll_md_obd->obd_kset.kobj,
735 sbi->ll_md_obd->obd_type->typ_name);
737 CERROR("%s: could not register %s in llite: rc = %d\n",
738 md, sbi->ll_fsname, err);
747 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
749 obd_disconnect(sbi->ll_dt_exp);
750 sbi->ll_dt_exp = NULL;
751 sbi->ll_dt_obd = NULL;
753 obd_fid_fini(sbi->ll_md_exp->exp_obd);
755 obd_disconnect(sbi->ll_md_exp);
756 sbi->ll_md_exp = NULL;
757 sbi->ll_md_obd = NULL;
766 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
770 size = sizeof(*lmmsize);
771 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
772 KEY_MAX_EASIZE, &size, lmmsize);
774 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
775 sbi->ll_dt_exp->exp_obd->obd_name, rc);
779 CDEBUG(D_INFO, "max LOV ea size: %d\n", *lmmsize);
782 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
783 KEY_MAX_EASIZE, &size, lmmsize);
785 CERROR("Get max mdsize error rc %d\n", rc);
787 CDEBUG(D_INFO, "max LMV ea size: %d\n", *lmmsize);
793 * Get the value of the default_easize parameter.
795 * \see client_obd::cl_default_mds_easize
797 * \param[in] sbi superblock info for this filesystem
798 * \param[out] lmmsize pointer to storage location for value
800 * \retval 0 on success
801 * \retval negative negated errno on failure
803 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
808 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
809 KEY_DEFAULT_EASIZE, &size, lmmsize);
811 CERROR("Get default mdsize error rc %d\n", rc);
817 * Set the default_easize parameter to the given value.
819 * \see client_obd::cl_default_mds_easize
821 * \param[in] sbi superblock info for this filesystem
822 * \param[in] lmmsize the size to set
824 * \retval 0 on success
825 * \retval negative negated errno on failure
827 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
831 if (lmmsize < sizeof(struct lov_mds_md) ||
832 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
835 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
836 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
837 sizeof(int), &lmmsize, NULL);
842 static void client_common_put_super(struct super_block *sb)
844 struct ll_sb_info *sbi = ll_s2sbi(sb);
849 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
850 obd_disconnect(sbi->ll_dt_exp);
851 sbi->ll_dt_exp = NULL;
853 ll_debugfs_unregister_super(sb);
855 obd_fid_fini(sbi->ll_md_exp->exp_obd);
856 obd_disconnect(sbi->ll_md_exp);
857 sbi->ll_md_exp = NULL;
862 void ll_kill_super(struct super_block *sb)
864 struct ll_sb_info *sbi;
868 if (!(sb->s_flags & SB_ACTIVE))
872 /* we need restore s_dev from changed for clustred NFS before put_super
873 * because new kernels have cached s_dev and change sb->s_dev in
874 * put_super not affected real removing devices */
876 sb->s_dev = sbi->ll_sdev_orig;
878 /* wait running statahead threads to quit */
879 while (atomic_read(&sbi->ll_sa_running) > 0)
880 schedule_timeout_uninterruptible(
881 cfs_time_seconds(1) >> 3);
887 static inline int ll_set_opt(const char *opt, char *data, int fl)
889 if (strncmp(opt, data, strlen(opt)) != 0)
895 /* non-client-specific mount options are parsed in lmd_parse */
896 static int ll_options(char *options, struct ll_sb_info *sbi)
899 char *s1 = options, *s2;
900 int *flags = &sbi->ll_flags;
906 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
909 CDEBUG(D_SUPER, "next opt=%s\n", s1);
910 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
915 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
917 *flags = (*flags & ~LL_SBI_LOCALFLOCK) | tmp;
920 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
922 *flags = (*flags & ~LL_SBI_FLOCK) | tmp;
925 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
930 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
935 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
940 tmp = ll_set_opt("context", s1, 1);
943 tmp = ll_set_opt("fscontext", s1, 1);
946 tmp = ll_set_opt("defcontext", s1, 1);
949 tmp = ll_set_opt("rootcontext", s1, 1);
952 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
957 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
963 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
966 sbi->ll_checksum_set = 1;
969 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
972 sbi->ll_checksum_set = 1;
975 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
980 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
985 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
990 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
995 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
1000 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
1005 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
1010 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
1015 tmp = ll_set_opt("test_dummy_encryption", s1,
1016 LL_SBI_TEST_DUMMY_ENCRYPTION);
1018 #ifdef HAVE_LUSTRE_CRYPTO
1021 LCONSOLE_WARN("Test dummy encryption mount option ignored: encryption not supported\n");
1025 tmp = ll_set_opt("noencrypt", s1, LL_SBI_ENCRYPT);
1027 #ifdef HAVE_LUSTRE_CRYPTO
1030 LCONSOLE_WARN("noencrypt mount option ignored: encryption not supported\n");
1034 tmp = ll_set_opt("foreign_symlink", s1, LL_SBI_FOREIGN_SYMLINK);
1036 int prefix_pos = sizeof("foreign_symlink=") - 1;
1037 int equal_pos = sizeof("foreign_symlink=") - 2;
1039 /* non-default prefix provided ? */
1040 if (strlen(s1) >= sizeof("foreign_symlink=") &&
1041 *(s1 + equal_pos) == '=') {
1042 char *old = sbi->ll_foreign_symlink_prefix;
1044 sbi->ll_foreign_symlink_prefix_size;
1046 /* path must be absolute */
1047 if (*(s1 + sizeof("foreign_symlink=")
1049 LCONSOLE_ERROR_MSG(0x152,
1050 "foreign prefix '%s' must be an absolute path\n",
1055 s2 = strchrnul(s1 + prefix_pos, ',');
1057 if (sbi->ll_foreign_symlink_prefix) {
1058 sbi->ll_foreign_symlink_prefix = NULL;
1059 sbi->ll_foreign_symlink_prefix_size = 0;
1061 /* alloc for path length and '\0' */
1062 OBD_ALLOC(sbi->ll_foreign_symlink_prefix,
1063 s2 - (s1 + prefix_pos) + 1);
1064 if (!sbi->ll_foreign_symlink_prefix) {
1065 /* restore previous */
1066 sbi->ll_foreign_symlink_prefix = old;
1067 sbi->ll_foreign_symlink_prefix_size =
1072 OBD_FREE(old, old_len);
1073 strncpy(sbi->ll_foreign_symlink_prefix,
1075 s2 - (s1 + prefix_pos));
1076 sbi->ll_foreign_symlink_prefix_size =
1077 s2 - (s1 + prefix_pos) + 1;
1079 LCONSOLE_ERROR_MSG(0x152,
1080 "invalid %s option\n", s1);
1082 /* enable foreign symlink support */
1086 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
1092 s2 = strchr(s1, ',');
1100 void ll_lli_init(struct ll_inode_info *lli)
1102 lli->lli_inode_magic = LLI_INODE_MAGIC;
1104 spin_lock_init(&lli->lli_lock);
1105 lli->lli_posix_acl = NULL;
1106 /* Do not set lli_fid, it has been initialized already. */
1107 fid_zero(&lli->lli_pfid);
1108 lli->lli_mds_read_och = NULL;
1109 lli->lli_mds_write_och = NULL;
1110 lli->lli_mds_exec_och = NULL;
1111 lli->lli_open_fd_read_count = 0;
1112 lli->lli_open_fd_write_count = 0;
1113 lli->lli_open_fd_exec_count = 0;
1114 mutex_init(&lli->lli_och_mutex);
1115 spin_lock_init(&lli->lli_agl_lock);
1116 spin_lock_init(&lli->lli_layout_lock);
1117 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
1118 lli->lli_clob = NULL;
1120 init_rwsem(&lli->lli_xattrs_list_rwsem);
1121 mutex_init(&lli->lli_xattrs_enq_lock);
1123 LASSERT(lli->lli_vfs_inode.i_mode != 0);
1124 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
1125 lli->lli_opendir_key = NULL;
1126 lli->lli_sai = NULL;
1127 spin_lock_init(&lli->lli_sa_lock);
1128 lli->lli_opendir_pid = 0;
1129 lli->lli_sa_enabled = 0;
1130 init_rwsem(&lli->lli_lsm_sem);
1132 mutex_init(&lli->lli_size_mutex);
1133 mutex_init(&lli->lli_setattr_mutex);
1134 lli->lli_symlink_name = NULL;
1135 ll_trunc_sem_init(&lli->lli_trunc_sem);
1136 range_lock_tree_init(&lli->lli_write_tree);
1137 init_rwsem(&lli->lli_glimpse_sem);
1138 lli->lli_glimpse_time = ktime_set(0, 0);
1139 INIT_LIST_HEAD(&lli->lli_agl_list);
1140 lli->lli_agl_index = 0;
1141 lli->lli_async_rc = 0;
1142 spin_lock_init(&lli->lli_heat_lock);
1143 obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
1144 lli->lli_heat_flags = 0;
1145 mutex_init(&lli->lli_pcc_lock);
1146 lli->lli_pcc_state = PCC_STATE_FL_NONE;
1147 lli->lli_pcc_inode = NULL;
1148 lli->lli_pcc_dsflags = PCC_DATASET_INVALID;
1149 lli->lli_pcc_generation = 0;
1150 mutex_init(&lli->lli_group_mutex);
1151 lli->lli_group_users = 0;
1152 lli->lli_group_gid = 0;
1154 mutex_init(&lli->lli_layout_mutex);
1155 memset(lli->lli_jobid, 0, sizeof(lli->lli_jobid));
1158 #define MAX_STRING_SIZE 128
1160 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1162 #define LSI_BDI_INITIALIZED 0x00400000
1164 #ifndef HAVE_BDI_CAP_MAP_COPY
1165 # define BDI_CAP_MAP_COPY 0
1168 static int super_setup_bdi_name(struct super_block *sb, char *fmt, ...)
1170 struct lustre_sb_info *lsi = s2lsi(sb);
1171 char buf[MAX_STRING_SIZE];
1175 err = bdi_init(&lsi->lsi_bdi);
1179 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1180 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1181 lsi->lsi_bdi.name = "lustre";
1182 va_start(args, fmt);
1183 vsnprintf(buf, MAX_STRING_SIZE, fmt, args);
1185 err = bdi_register(&lsi->lsi_bdi, NULL, "%s", buf);
1188 sb->s_bdi = &lsi->lsi_bdi;
1192 #endif /* !HAVE_SUPER_SETUP_BDI_NAME */
1194 int ll_fill_super(struct super_block *sb)
1196 struct lustre_profile *lprof = NULL;
1197 struct lustre_sb_info *lsi = s2lsi(sb);
1198 struct ll_sb_info *sbi = NULL;
1199 char *dt = NULL, *md = NULL;
1200 char *profilenm = get_profile_name(sb);
1201 struct config_llog_instance *cfg;
1202 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1203 const int instlen = LUSTRE_MAXINSTANCE + 2;
1204 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1205 char name[MAX_STRING_SIZE];
1214 /* for ASLR, to map between cfg_instance and hashed ptr */
1215 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1216 profilenm, cfg_instance, sb);
1218 OBD_RACE(OBD_FAIL_LLITE_RACE_MOUNT);
1222 GOTO(out_free_cfg, err = -ENOMEM);
1224 /* client additional sb info */
1225 lsi->lsi_llsbi = sbi = ll_init_sbi();
1227 GOTO(out_free_cfg, err = PTR_ERR(sbi));
1229 err = ll_options(lsi->lsi_lmd->lmd_opts, sbi);
1231 GOTO(out_free_cfg, err);
1233 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1234 sb->s_d_op = &ll_d_ops;
1237 generate_random_uuid(uuid.b);
1238 snprintf(sbi->ll_sb_uuid.uuid, sizeof(sbi->ll_sb_uuid), "%pU", uuid.b);
1240 CDEBUG(D_CONFIG, "llite sb uuid: %s\n", sbi->ll_sb_uuid.uuid);
1243 len = strlen(profilenm);
1244 ptr = strrchr(profilenm, '-');
1245 if (ptr && (strcmp(ptr, "-client") == 0))
1248 if (len > LUSTRE_MAXFSNAME) {
1249 if (unlikely(len >= MAX_STRING_SIZE))
1250 len = MAX_STRING_SIZE - 1;
1251 strncpy(name, profilenm, len);
1253 err = -ENAMETOOLONG;
1254 CERROR("%s: fsname longer than %u characters: rc = %d\n",
1255 name, LUSTRE_MAXFSNAME, err);
1256 GOTO(out_free_cfg, err);
1258 strncpy(sbi->ll_fsname, profilenm, len);
1259 sbi->ll_fsname[len] = '\0';
1262 snprintf(name, sizeof(name), "%.*s-%016lx", len,
1263 profilenm, cfg_instance);
1265 err = super_setup_bdi_name(sb, "%s", name);
1267 GOTO(out_free_cfg, err);
1269 /* Call ll_debugfs_register_super() before lustre_process_log()
1270 * so that "llite.*.*" params can be processed correctly.
1272 err = ll_debugfs_register_super(sb, name);
1274 CERROR("%s: could not register mountpoint in llite: rc = %d\n",
1275 sbi->ll_fsname, err);
1279 /* The cfg_instance is a value unique to this super, in case some
1280 * joker tries to mount the same fs at two mount points.
1282 cfg->cfg_instance = cfg_instance;
1283 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1284 cfg->cfg_callback = class_config_llog_handler;
1285 cfg->cfg_sub_clds = CONFIG_SUB_CLIENT;
1286 /* set up client obds */
1287 err = lustre_process_log(sb, profilenm, cfg);
1289 GOTO(out_debugfs, err);
1291 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1292 lprof = class_get_profile(profilenm);
1293 if (lprof == NULL) {
1294 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1295 " read from the MGS. Does that filesystem "
1296 "exist?\n", profilenm);
1297 GOTO(out_debugfs, err = -EINVAL);
1299 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1300 lprof->lp_md, lprof->lp_dt);
1302 dt_len = strlen(lprof->lp_dt) + instlen + 2;
1303 OBD_ALLOC(dt, dt_len);
1305 GOTO(out_profile, err = -ENOMEM);
1306 snprintf(dt, dt_len - 1, "%s-%016lx", lprof->lp_dt, cfg_instance);
1308 md_len = strlen(lprof->lp_md) + instlen + 2;
1309 OBD_ALLOC(md, md_len);
1311 GOTO(out_free_dt, err = -ENOMEM);
1312 snprintf(md, md_len - 1, "%s-%016lx", lprof->lp_md, cfg_instance);
1314 /* connections, registrations, sb setup */
1315 err = client_common_fill_super(sb, md, dt);
1317 GOTO(out_free_md, err);
1319 sbi->ll_client_common_fill_super_succeeded = 1;
1323 OBD_FREE(md, md_len);
1326 OBD_FREE(dt, dt_len);
1329 class_put_profile(lprof);
1332 ll_debugfs_unregister_super(sb);
1339 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1340 LCONSOLE_WARN("Mounted %s\n", profilenm);
1342 } /* ll_fill_super */
1344 void ll_put_super(struct super_block *sb)
1346 struct config_llog_instance cfg, params_cfg;
1347 struct obd_device *obd;
1348 struct lustre_sb_info *lsi = s2lsi(sb);
1349 struct ll_sb_info *sbi = ll_s2sbi(sb);
1350 char *profilenm = get_profile_name(sb);
1351 unsigned long cfg_instance = ll_get_cfg_instance(sb);
1353 int next, force = 1, rc = 0;
1357 GOTO(out_no_sbi, 0);
1359 /* Should replace instance_id with something better for ASLR */
1360 CDEBUG(D_VFSTRACE, "VFS Op: cfg_instance %s-%016lx (sb %p)\n",
1361 profilenm, cfg_instance, sb);
1363 cfg.cfg_instance = cfg_instance;
1364 lustre_end_log(sb, profilenm, &cfg);
1366 params_cfg.cfg_instance = cfg_instance;
1367 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1369 if (sbi->ll_md_exp) {
1370 obd = class_exp2obd(sbi->ll_md_exp);
1372 force = obd->obd_force;
1375 /* Wait for unstable pages to be committed to stable storage */
1377 rc = l_wait_event_abortable(
1378 sbi->ll_cache->ccc_unstable_waitq,
1379 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0);
1382 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1383 if (force == 0 && rc != -ERESTARTSYS)
1384 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1386 /* We need to set force before the lov_disconnect in
1387 * lustre_common_put_super, since l_d cleans up osc's as well.
1391 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1393 obd->obd_force = force;
1397 if (sbi->ll_client_common_fill_super_succeeded) {
1398 /* Only if client_common_fill_super succeeded */
1399 client_common_put_super(sb);
1403 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)))
1404 class_manual_cleanup(obd);
1406 if (sbi->ll_flags & LL_SBI_VERBOSE)
1407 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1410 class_del_profile(profilenm);
1412 #ifndef HAVE_SUPER_SETUP_BDI_NAME
1413 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1414 bdi_destroy(&lsi->lsi_bdi);
1415 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1420 lsi->lsi_llsbi = NULL;
1422 lustre_common_put_super(sb);
1424 cl_env_cache_purge(~0);
1427 } /* client_put_super */
1429 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1431 struct inode *inode = NULL;
1433 /* NOTE: we depend on atomic igrab() -bzzz */
1434 lock_res_and_lock(lock);
1435 if (lock->l_resource->lr_lvb_inode) {
1436 struct ll_inode_info * lli;
1437 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1438 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1439 inode = igrab(lock->l_resource->lr_lvb_inode);
1441 inode = lock->l_resource->lr_lvb_inode;
1442 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1443 D_WARNING, lock, "lr_lvb_inode %p is "
1444 "bogus: magic %08x",
1445 lock->l_resource->lr_lvb_inode,
1446 lli->lli_inode_magic);
1450 unlock_res_and_lock(lock);
1454 void ll_dir_clear_lsm_md(struct inode *inode)
1456 struct ll_inode_info *lli = ll_i2info(inode);
1458 LASSERT(S_ISDIR(inode->i_mode));
1460 if (lli->lli_lsm_md) {
1461 lmv_free_memmd(lli->lli_lsm_md);
1462 lli->lli_lsm_md = NULL;
1465 if (lli->lli_default_lsm_md) {
1466 lmv_free_memmd(lli->lli_default_lsm_md);
1467 lli->lli_default_lsm_md = NULL;
1471 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1472 const struct lu_fid *fid,
1473 struct lustre_md *md)
1475 struct ll_sb_info *sbi = ll_s2sbi(sb);
1476 struct mdt_body *body = md->body;
1477 struct inode *inode;
1481 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1482 inode = iget_locked(sb, ino);
1483 if (inode == NULL) {
1484 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1485 sbi->ll_fsname, PFID(fid));
1486 RETURN(ERR_PTR(-ENOENT));
1489 if (inode->i_state & I_NEW) {
1490 struct ll_inode_info *lli = ll_i2info(inode);
1491 struct lmv_stripe_md *lsm = md->lmv;
1493 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1494 (body->mbo_mode & S_IFMT);
1495 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1498 inode->i_mtime.tv_sec = 0;
1499 inode->i_atime.tv_sec = 0;
1500 inode->i_ctime.tv_sec = 0;
1503 #ifdef HAVE_BACKING_DEV_INFO
1504 /* initializing backing dev info. */
1505 inode->i_mapping->backing_dev_info =
1506 &s2lsi(inode->i_sb)->lsi_bdi;
1508 inode->i_op = &ll_dir_inode_operations;
1509 inode->i_fop = &ll_dir_operations;
1510 lli->lli_fid = *fid;
1513 LASSERT(lsm != NULL);
1514 /* master object FID */
1515 lli->lli_pfid = body->mbo_fid1;
1516 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1517 lli, PFID(fid), PFID(&lli->lli_pfid));
1518 unlock_new_inode(inode);
1524 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1527 struct lmv_stripe_md *lsm = md->lmv;
1528 struct ll_inode_info *lli = ll_i2info(inode);
1531 LASSERT(lsm != NULL);
1533 CDEBUG(D_INODE, "%s: "DFID" set dir layout:\n",
1534 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1535 lsm_md_dump(D_INODE, lsm);
1537 if (!lmv_dir_striped(lsm))
1540 /* XXX sigh, this lsm_root initialization should be in
1541 * LMV layer, but it needs ll_iget right now, so we
1542 * put this here right now. */
1543 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1544 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1545 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1547 if (!fid_is_sane(fid))
1550 /* Unfortunately ll_iget will call ll_update_inode,
1551 * where the initialization of slave inode is slightly
1552 * different, so it reset lsm_md to NULL to avoid
1553 * initializing lsm for slave inode. */
1554 lsm->lsm_md_oinfo[i].lmo_root =
1555 ll_iget_anon_dir(inode->i_sb, fid, md);
1556 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1557 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1559 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1561 iput(lsm->lsm_md_oinfo[i].lmo_root);
1562 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1568 lli->lli_lsm_md = lsm;
1573 static void ll_update_default_lsm_md(struct inode *inode, struct lustre_md *md)
1575 struct ll_inode_info *lli = ll_i2info(inode);
1577 if (!md->default_lmv) {
1578 /* clear default lsm */
1579 if (lli->lli_default_lsm_md) {
1580 down_write(&lli->lli_lsm_sem);
1581 if (lli->lli_default_lsm_md) {
1582 lmv_free_memmd(lli->lli_default_lsm_md);
1583 lli->lli_default_lsm_md = NULL;
1585 up_write(&lli->lli_lsm_sem);
1587 } else if (lli->lli_default_lsm_md) {
1588 /* update default lsm if it changes */
1589 down_read(&lli->lli_lsm_sem);
1590 if (lli->lli_default_lsm_md &&
1591 !lsm_md_eq(lli->lli_default_lsm_md, md->default_lmv)) {
1592 up_read(&lli->lli_lsm_sem);
1593 down_write(&lli->lli_lsm_sem);
1594 if (lli->lli_default_lsm_md)
1595 lmv_free_memmd(lli->lli_default_lsm_md);
1596 lli->lli_default_lsm_md = md->default_lmv;
1597 lsm_md_dump(D_INODE, md->default_lmv);
1598 md->default_lmv = NULL;
1599 up_write(&lli->lli_lsm_sem);
1601 up_read(&lli->lli_lsm_sem);
1604 /* init default lsm */
1605 down_write(&lli->lli_lsm_sem);
1606 lli->lli_default_lsm_md = md->default_lmv;
1607 lsm_md_dump(D_INODE, md->default_lmv);
1608 md->default_lmv = NULL;
1609 up_write(&lli->lli_lsm_sem);
1613 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1615 struct ll_inode_info *lli = ll_i2info(inode);
1616 struct lmv_stripe_md *lsm = md->lmv;
1617 struct cl_attr *attr;
1622 LASSERT(S_ISDIR(inode->i_mode));
1623 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1624 PFID(ll_inode2fid(inode)));
1626 /* update default LMV */
1627 if (md->default_lmv)
1628 ll_update_default_lsm_md(inode, md);
1631 * no striped information from request, lustre_md from req does not
1632 * include stripeEA, see ll_md_setattr()
1638 * normally dir layout doesn't change, only take read lock to check
1639 * that to avoid blocking other MD operations.
1641 down_read(&lli->lli_lsm_sem);
1643 /* some current lookup initialized lsm, and unchanged */
1644 if (lli->lli_lsm_md && lsm_md_eq(lli->lli_lsm_md, lsm))
1645 GOTO(unlock, rc = 0);
1647 /* if dir layout doesn't match, check whether version is increased,
1648 * which means layout is changed, this happens in dir split/merge and
1651 * foreign LMV should not change.
1653 if (lli->lli_lsm_md && lmv_dir_striped(lli->lli_lsm_md) &&
1654 lsm->lsm_md_layout_version <=
1655 lli->lli_lsm_md->lsm_md_layout_version) {
1656 CERROR("%s: "DFID" dir layout mismatch:\n",
1657 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
1658 lsm_md_dump(D_ERROR, lli->lli_lsm_md);
1659 lsm_md_dump(D_ERROR, lsm);
1660 GOTO(unlock, rc = -EINVAL);
1663 up_read(&lli->lli_lsm_sem);
1664 down_write(&lli->lli_lsm_sem);
1665 /* clear existing lsm */
1666 if (lli->lli_lsm_md) {
1667 lmv_free_memmd(lli->lli_lsm_md);
1668 lli->lli_lsm_md = NULL;
1671 rc = ll_init_lsm_md(inode, md);
1672 up_write(&lli->lli_lsm_sem);
1677 /* set md->lmv to NULL, so the following free lustre_md will not free
1682 /* md_merge_attr() may take long, since lsm is already set, switch to
1685 down_read(&lli->lli_lsm_sem);
1687 if (!lmv_dir_striped(lli->lli_lsm_md))
1688 GOTO(unlock, rc = 0);
1690 OBD_ALLOC_PTR(attr);
1692 GOTO(unlock, rc = -ENOMEM);
1694 /* validate the lsm */
1695 rc = md_merge_attr(ll_i2mdexp(inode), lli->lli_lsm_md, attr,
1696 ll_md_blocking_ast);
1698 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1699 md->body->mbo_nlink = attr->cat_nlink;
1700 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1701 md->body->mbo_size = attr->cat_size;
1702 if (md->body->mbo_valid & OBD_MD_FLATIME)
1703 md->body->mbo_atime = attr->cat_atime;
1704 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1705 md->body->mbo_ctime = attr->cat_ctime;
1706 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1707 md->body->mbo_mtime = attr->cat_mtime;
1713 up_read(&lli->lli_lsm_sem);
1718 void ll_clear_inode(struct inode *inode)
1720 struct ll_inode_info *lli = ll_i2info(inode);
1721 struct ll_sb_info *sbi = ll_i2sbi(inode);
1725 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1726 PFID(ll_inode2fid(inode)), inode);
1728 if (S_ISDIR(inode->i_mode)) {
1729 /* these should have been cleared in ll_file_release */
1730 LASSERT(lli->lli_opendir_key == NULL);
1731 LASSERT(lli->lli_sai == NULL);
1732 LASSERT(lli->lli_opendir_pid == 0);
1734 pcc_inode_free(inode);
1737 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1739 LASSERT(!lli->lli_open_fd_write_count);
1740 LASSERT(!lli->lli_open_fd_read_count);
1741 LASSERT(!lli->lli_open_fd_exec_count);
1743 if (lli->lli_mds_write_och)
1744 ll_md_real_close(inode, FMODE_WRITE);
1745 if (lli->lli_mds_exec_och)
1746 ll_md_real_close(inode, FMODE_EXEC);
1747 if (lli->lli_mds_read_och)
1748 ll_md_real_close(inode, FMODE_READ);
1750 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1751 OBD_FREE(lli->lli_symlink_name,
1752 strlen(lli->lli_symlink_name) + 1);
1753 lli->lli_symlink_name = NULL;
1756 ll_xattr_cache_destroy(inode);
1758 forget_all_cached_acls(inode);
1760 lli->lli_inode_magic = LLI_INODE_DEAD;
1762 if (S_ISDIR(inode->i_mode))
1763 ll_dir_clear_lsm_md(inode);
1764 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1765 LASSERT(list_empty(&lli->lli_agl_list));
1768 * XXX This has to be done before lsm is freed below, because
1769 * cl_object still uses inode lsm.
1771 cl_inode_fini(inode);
1773 llcrypt_put_encryption_info(inode);
1778 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1780 struct lustre_md md;
1781 struct inode *inode = dentry->d_inode;
1782 struct ll_sb_info *sbi = ll_i2sbi(inode);
1783 struct ptlrpc_request *request = NULL;
1787 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1788 LUSTRE_OPC_ANY, NULL);
1789 if (IS_ERR(op_data))
1790 RETURN(PTR_ERR(op_data));
1792 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1794 ptlrpc_req_finished(request);
1795 if (rc == -ENOENT) {
1797 /* Unlinked special device node? Or just a race?
1798 * Pretend we done everything. */
1799 if (!S_ISREG(inode->i_mode) &&
1800 !S_ISDIR(inode->i_mode)) {
1801 ia_valid = op_data->op_attr.ia_valid;
1802 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1803 rc = simple_setattr(dentry, &op_data->op_attr);
1804 op_data->op_attr.ia_valid = ia_valid;
1806 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1807 CERROR("md_setattr fails: rc = %d\n", rc);
1812 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1813 sbi->ll_md_exp, &md);
1815 ptlrpc_req_finished(request);
1819 ia_valid = op_data->op_attr.ia_valid;
1820 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1821 * cache is not cleared yet. */
1822 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1823 if (S_ISREG(inode->i_mode))
1825 rc = simple_setattr(dentry, &op_data->op_attr);
1826 if (S_ISREG(inode->i_mode))
1827 inode_unlock(inode);
1828 op_data->op_attr.ia_valid = ia_valid;
1830 rc = ll_update_inode(inode, &md);
1831 ptlrpc_req_finished(request);
1837 * Zero portion of page that is part of @inode.
1838 * This implies, if necessary:
1839 * - taking cl_lock on range corresponding to concerned page
1840 * - grabbing vm page
1841 * - associating cl_page
1842 * - proceeding to clio read
1843 * - zeroing range in page
1844 * - proceeding to cl_page flush
1845 * - releasing cl_lock
1847 * \param[in] inode inode
1848 * \param[in] index page index
1849 * \param[in] offset offset in page to start zero from
1850 * \param[in] len len to zero
1852 * \retval 0 on success
1853 * \retval negative errno on failure
1855 int ll_io_zero_page(struct inode *inode, pgoff_t index, pgoff_t offset,
1858 struct ll_inode_info *lli = ll_i2info(inode);
1859 struct cl_object *clob = lli->lli_clob;
1861 struct lu_env *env = NULL;
1862 struct cl_io *io = NULL;
1863 struct cl_page *clpage = NULL;
1864 struct page *vmpage = NULL;
1865 unsigned from = index << PAGE_SHIFT;
1866 struct cl_lock *lock = NULL;
1867 struct cl_lock_descr *descr = NULL;
1868 struct cl_2queue *queue = NULL;
1869 struct cl_sync_io *anchor = NULL;
1870 bool holdinglock = false;
1871 bool lockedbymyself = true;
1876 env = cl_env_get(&refcheck);
1878 RETURN(PTR_ERR(env));
1880 io = vvp_env_thread_io(env);
1882 rc = cl_io_rw_init(env, io, CIT_WRITE, from, PAGE_SIZE);
1886 lock = vvp_env_lock(env);
1887 descr = &lock->cll_descr;
1888 descr->cld_obj = io->ci_obj;
1889 descr->cld_start = cl_index(io->ci_obj, from);
1890 descr->cld_end = cl_index(io->ci_obj, from + PAGE_SIZE - 1);
1891 descr->cld_mode = CLM_WRITE;
1892 descr->cld_enq_flags = CEF_MUST | CEF_NONBLOCK;
1894 /* request lock for page */
1895 rc = cl_lock_request(env, io, lock);
1896 /* -ECANCELED indicates a matching lock with a different extent
1897 * was already present, and -EEXIST indicates a matching lock
1898 * on exactly the same extent was already present.
1899 * In both cases it means we are covered.
1901 if (rc == -ECANCELED || rc == -EEXIST)
1909 vmpage = grab_cache_page_nowait(inode->i_mapping, index);
1911 GOTO(rellock, rc = -EOPNOTSUPP);
1913 if (!PageDirty(vmpage)) {
1914 /* associate cl_page */
1915 clpage = cl_page_find(env, clob, vmpage->index,
1916 vmpage, CPT_CACHEABLE);
1918 GOTO(pagefini, rc = PTR_ERR(clpage));
1920 cl_page_assume(env, io, clpage);
1923 if (!PageUptodate(vmpage) && !PageDirty(vmpage) &&
1924 !PageWriteback(vmpage)) {
1926 /* set PagePrivate2 to detect special case of empty page
1927 * in osc_brw_fini_request()
1929 SetPagePrivate2(vmpage);
1930 rc = ll_io_read_page(env, io, clpage, NULL);
1931 if (!PagePrivate2(vmpage))
1932 /* PagePrivate2 was cleared in osc_brw_fini_request()
1933 * meaning we read an empty page. In this case, in order
1934 * to avoid allocating unnecessary block in truncated
1935 * file, we must not zero and write as below. Subsequent
1936 * server-side truncate will handle things correctly.
1938 GOTO(clpfini, rc = 0);
1939 ClearPagePrivate2(vmpage);
1942 lockedbymyself = trylock_page(vmpage);
1943 cl_page_assume(env, io, clpage);
1946 /* zero range in page */
1947 zero_user(vmpage, offset, len);
1949 if (holdinglock && clpage) {
1950 /* explicitly write newly modified page */
1951 queue = &io->ci_queue;
1952 cl_2queue_init(queue);
1953 anchor = &vvp_env_info(env)->vti_anchor;
1954 cl_sync_io_init(anchor, 1);
1955 clpage->cp_sync_io = anchor;
1956 cl_2queue_add(queue, clpage);
1957 rc = cl_io_submit_rw(env, io, CRT_WRITE, queue);
1959 GOTO(queuefini1, rc);
1960 rc = cl_sync_io_wait(env, anchor, 0);
1962 GOTO(queuefini2, rc);
1963 cl_page_assume(env, io, clpage);
1966 cl_2queue_discard(env, io, queue);
1968 cl_2queue_disown(env, io, queue);
1969 cl_2queue_fini(env, queue);
1974 cl_page_put(env, clpage);
1976 if (lockedbymyself) {
1977 unlock_page(vmpage);
1982 cl_lock_release(env, lock);
1984 cl_io_fini(env, io);
1987 cl_env_put(env, &refcheck);
1992 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1993 * object(s) determine the file size and mtime. Otherwise, the MDS will
1994 * keep these values until such a time that objects are allocated for it.
1995 * We do the MDS operations first, as it is checking permissions for us.
1996 * We don't to the MDS RPC if there is nothing that we want to store there,
1997 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1998 * going to do an RPC anyways.
2000 * If we are doing a truncate, we will send the mtime and ctime updates
2001 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
2002 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
2005 * In case of HSMimport, we only set attr on MDS.
2007 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr,
2008 enum op_xvalid xvalid, bool hsm_import)
2010 struct inode *inode = dentry->d_inode;
2011 struct ll_inode_info *lli = ll_i2info(inode);
2012 struct md_op_data *op_data = NULL;
2013 ktime_t kstart = ktime_get();
2018 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
2019 "valid %x, hsm_import %d\n",
2020 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid),
2021 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
2024 if (attr->ia_valid & ATTR_SIZE) {
2025 /* Check new size against VFS/VM file size limit and rlimit */
2026 rc = inode_newsize_ok(inode, attr->ia_size);
2030 /* The maximum Lustre file size is variable, based on the
2031 * OST maximum object size and number of stripes. This
2032 * needs another check in addition to the VFS check above. */
2033 if (attr->ia_size > ll_file_maxbytes(inode)) {
2034 CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
2035 PFID(&lli->lli_fid), attr->ia_size,
2036 ll_file_maxbytes(inode));
2040 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
2043 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
2044 if (attr->ia_valid & TIMES_SET_FLAGS) {
2045 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
2046 !capable(CAP_FOWNER))
2050 /* We mark all of the fields "set" so MDS/OST does not re-set them */
2051 if (!(xvalid & OP_XVALID_CTIME_SET) &&
2052 (attr->ia_valid & ATTR_CTIME)) {
2053 attr->ia_ctime = current_time(inode);
2054 xvalid |= OP_XVALID_CTIME_SET;
2056 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
2057 (attr->ia_valid & ATTR_ATIME)) {
2058 attr->ia_atime = current_time(inode);
2059 attr->ia_valid |= ATTR_ATIME_SET;
2061 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
2062 (attr->ia_valid & ATTR_MTIME)) {
2063 attr->ia_mtime = current_time(inode);
2064 attr->ia_valid |= ATTR_MTIME_SET;
2067 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
2068 CDEBUG(D_INODE, "setting mtime %lld, ctime %lld, now = %lld\n",
2069 (s64)attr->ia_mtime.tv_sec, (s64)attr->ia_ctime.tv_sec,
2070 ktime_get_real_seconds());
2072 if (S_ISREG(inode->i_mode))
2073 inode_unlock(inode);
2075 /* We always do an MDS RPC, even if we're only changing the size;
2076 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
2078 OBD_ALLOC_PTR(op_data);
2079 if (op_data == NULL)
2080 GOTO(out, rc = -ENOMEM);
2082 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
2083 /* If we are changing file size, file content is
2084 * modified, flag it.
2086 xvalid |= OP_XVALID_OWNEROVERRIDE;
2087 op_data->op_bias |= MDS_DATA_MODIFIED;
2088 clear_bit(LLIF_DATA_MODIFIED, &lli->lli_flags);
2091 if (attr->ia_valid & ATTR_FILE) {
2092 struct ll_file_data *fd = attr->ia_file->private_data;
2094 if (fd->fd_lease_och)
2095 op_data->op_bias |= MDS_TRUNC_KEEP_LEASE;
2098 op_data->op_attr = *attr;
2099 op_data->op_xvalid = xvalid;
2101 rc = ll_md_setattr(dentry, op_data);
2105 if (!S_ISREG(inode->i_mode) || hsm_import)
2108 if (attr->ia_valid & (ATTR_SIZE | ATTR_ATIME | ATTR_ATIME_SET |
2109 ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME) ||
2110 xvalid & OP_XVALID_CTIME_SET) {
2111 bool cached = false;
2113 rc = pcc_inode_setattr(inode, attr, &cached);
2116 CERROR("%s: PCC inode "DFID" setattr failed: "
2118 ll_i2sbi(inode)->ll_fsname,
2119 PFID(&lli->lli_fid), rc);
2123 unsigned int flags = 0;
2125 /* For truncate and utimes sending attributes to OSTs,
2126 * setting mtime/atime to the past will be performed
2127 * under PW [0:EOF] extent lock (new_size:EOF for
2128 * truncate). It may seem excessive to send mtime/atime
2129 * updates to OSTs when not setting times to past, but
2130 * it is necessary due to possible time
2131 * de-synchronization between MDT inode and OST objects
2133 if (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode) &&
2134 attr->ia_valid & ATTR_SIZE) {
2135 xvalid |= OP_XVALID_FLAGS;
2136 flags = LUSTRE_ENCRYPT_FL;
2137 /* Call to ll_io_zero_page is not necessary if
2138 * truncating on PAGE_SIZE boundary, because
2139 * whole pages will be wiped.
2140 * In case of Direct IO, all we need is to set
2143 if (attr->ia_size & ~PAGE_MASK &&
2144 !(attr->ia_valid & ATTR_FILE &&
2145 attr->ia_file->f_flags & O_DIRECT)) {
2147 attr->ia_size & (PAGE_SIZE - 1);
2149 rc = ll_io_zero_page(inode,
2150 attr->ia_size >> PAGE_SHIFT,
2151 offset, PAGE_SIZE - offset);
2156 rc = cl_setattr_ost(lli->lli_clob, attr, xvalid, flags);
2160 /* If the file was restored, it needs to set dirty flag.
2162 * We've already sent MDS_DATA_MODIFIED flag in
2163 * ll_md_setattr() for truncate. However, the MDT refuses to
2164 * set the HS_DIRTY flag on released files, so we have to set
2165 * it again if the file has been restored. Please check how
2166 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
2168 * Please notice that if the file is not released, the previous
2169 * MDS_DATA_MODIFIED has taken effect and usually
2170 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
2171 * This way we can save an RPC for common open + trunc
2173 if (test_and_clear_bit(LLIF_DATA_MODIFIED, &lli->lli_flags)) {
2174 struct hsm_state_set hss = {
2175 .hss_valid = HSS_SETMASK,
2176 .hss_setmask = HS_DIRTY,
2180 rc2 = ll_hsm_state_set(inode, &hss);
2181 /* truncate and write can happen at the same time, so that
2182 * the file can be set modified even though the file is not
2183 * restored from released state, and ll_hsm_state_set() is
2184 * not applicable for the file, and rc2 < 0 is normal in this
2187 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
2188 PFID(ll_inode2fid(inode)), rc2);
2193 if (op_data != NULL)
2194 ll_finish_md_op_data(op_data);
2196 if (S_ISREG(inode->i_mode)) {
2198 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
2199 inode_dio_wait(inode);
2200 /* Once we've got the i_mutex, it's safe to set the S_NOSEC
2201 * flag. ll_update_inode (called from ll_md_setattr), clears
2202 * inode flags, so there is a gap where S_NOSEC is not set.
2203 * This can cause a writer to take the i_mutex unnecessarily,
2204 * but this is safe to do and should be rare. */
2205 inode_has_no_xattr(inode);
2209 ll_stats_ops_tally(ll_i2sbi(inode), attr->ia_valid & ATTR_SIZE ?
2210 LPROC_LL_TRUNC : LPROC_LL_SETATTR,
2211 ktime_us_delta(ktime_get(), kstart));
2216 int ll_setattr(struct dentry *de, struct iattr *attr)
2218 int mode = de->d_inode->i_mode;
2219 enum op_xvalid xvalid = 0;
2222 rc = llcrypt_prepare_setattr(de, attr);
2226 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
2227 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
2228 xvalid |= OP_XVALID_OWNEROVERRIDE;
2230 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
2231 (ATTR_SIZE|ATTR_MODE)) &&
2232 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
2233 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
2234 !(attr->ia_mode & S_ISGID))))
2235 attr->ia_valid |= ATTR_FORCE;
2237 if ((attr->ia_valid & ATTR_MODE) &&
2239 !(attr->ia_mode & S_ISUID) &&
2240 !(attr->ia_valid & ATTR_KILL_SUID))
2241 attr->ia_valid |= ATTR_KILL_SUID;
2243 if ((attr->ia_valid & ATTR_MODE) &&
2244 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
2245 !(attr->ia_mode & S_ISGID) &&
2246 !(attr->ia_valid & ATTR_KILL_SGID))
2247 attr->ia_valid |= ATTR_KILL_SGID;
2249 return ll_setattr_raw(de, attr, xvalid, false);
2252 int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
2255 struct obd_statfs obd_osfs = { 0 };
2260 max_age = ktime_get_seconds() - sbi->ll_statfs_max_age;
2262 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2263 flags |= OBD_STATFS_NODELAY;
2265 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
2269 osfs->os_type = LL_SUPER_MAGIC;
2271 CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
2272 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, osfs->os_files);
2274 if (osfs->os_state & OS_STATFS_SUM)
2277 rc = obd_statfs(NULL, sbi->ll_dt_exp, &obd_osfs, max_age, flags);
2278 if (rc) /* Possibly a filesystem with no OSTs. Report MDT totals. */
2281 CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
2282 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
2285 osfs->os_bsize = obd_osfs.os_bsize;
2286 osfs->os_blocks = obd_osfs.os_blocks;
2287 osfs->os_bfree = obd_osfs.os_bfree;
2288 osfs->os_bavail = obd_osfs.os_bavail;
2290 /* If we have _some_ OSTs, but don't have as many free objects on the
2291 * OSTs as inodes on the MDTs, reduce the reported number of inodes
2292 * to compensate, so that the "inodes in use" number is correct.
2293 * This should be kept in sync with lod_statfs() behaviour.
2295 if (obd_osfs.os_files && obd_osfs.os_ffree < osfs->os_ffree) {
2296 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
2298 osfs->os_ffree = obd_osfs.os_ffree;
2305 static int ll_statfs_project(struct inode *inode, struct kstatfs *sfs)
2307 struct if_quotactl qctl = {
2308 .qc_cmd = LUSTRE_Q_GETQUOTA,
2309 .qc_type = PRJQUOTA,
2310 .qc_valid = QC_GENERAL,
2312 u64 limit, curblock;
2315 qctl.qc_id = ll_i2info(inode)->lli_projid;
2316 ret = quotactl_ioctl(ll_i2sbi(inode), &qctl);
2318 /* ignore errors if project ID does not have
2319 * a quota limit or feature unsupported.
2321 if (ret == -ESRCH || ret == -EOPNOTSUPP)
2326 limit = ((qctl.qc_dqblk.dqb_bsoftlimit ?
2327 qctl.qc_dqblk.dqb_bsoftlimit :
2328 qctl.qc_dqblk.dqb_bhardlimit) * 1024) / sfs->f_bsize;
2329 if (limit && sfs->f_blocks > limit) {
2330 curblock = (qctl.qc_dqblk.dqb_curspace +
2331 sfs->f_bsize - 1) / sfs->f_bsize;
2332 sfs->f_blocks = limit;
2333 sfs->f_bfree = sfs->f_bavail =
2334 (sfs->f_blocks > curblock) ?
2335 (sfs->f_blocks - curblock) : 0;
2338 limit = qctl.qc_dqblk.dqb_isoftlimit ?
2339 qctl.qc_dqblk.dqb_isoftlimit :
2340 qctl.qc_dqblk.dqb_ihardlimit;
2341 if (limit && sfs->f_files > limit) {
2342 sfs->f_files = limit;
2343 sfs->f_ffree = (sfs->f_files >
2344 qctl.qc_dqblk.dqb_curinodes) ?
2345 (sfs->f_files - qctl.qc_dqblk.dqb_curinodes) : 0;
2351 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
2353 struct super_block *sb = de->d_sb;
2354 struct obd_statfs osfs;
2355 __u64 fsid = huge_encode_dev(sb->s_dev);
2356 ktime_t kstart = ktime_get();
2359 CDEBUG(D_VFSTRACE, "VFS Op:sb=%s (%p)\n", sb->s_id, sb);
2361 /* Some amount of caching on the client is allowed */
2362 rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_SUM);
2366 statfs_unpack(sfs, &osfs);
2368 /* We need to downshift for all 32-bit kernels, because we can't
2369 * tell if the kernel is being called via sys_statfs64() or not.
2370 * Stop before overflowing f_bsize - in which case it is better
2371 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
2372 if (sizeof(long) < 8) {
2373 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
2376 osfs.os_blocks >>= 1;
2377 osfs.os_bfree >>= 1;
2378 osfs.os_bavail >>= 1;
2382 sfs->f_blocks = osfs.os_blocks;
2383 sfs->f_bfree = osfs.os_bfree;
2384 sfs->f_bavail = osfs.os_bavail;
2385 sfs->f_fsid.val[0] = (__u32)fsid;
2386 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
2387 if (ll_i2info(de->d_inode)->lli_projid)
2388 return ll_statfs_project(de->d_inode, sfs);
2390 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STATFS,
2391 ktime_us_delta(ktime_get(), kstart));
2396 void ll_inode_size_lock(struct inode *inode)
2398 struct ll_inode_info *lli;
2400 LASSERT(!S_ISDIR(inode->i_mode));
2402 lli = ll_i2info(inode);
2403 mutex_lock(&lli->lli_size_mutex);
2406 void ll_inode_size_unlock(struct inode *inode)
2408 struct ll_inode_info *lli;
2410 lli = ll_i2info(inode);
2411 mutex_unlock(&lli->lli_size_mutex);
2414 void ll_update_inode_flags(struct inode *inode, unsigned int ext_flags)
2416 /* do not clear encryption flag */
2417 ext_flags |= ll_inode_to_ext_flags(inode->i_flags) & LUSTRE_ENCRYPT_FL;
2418 inode->i_flags = ll_ext_to_inode_flags(ext_flags);
2419 if (ext_flags & LUSTRE_PROJINHERIT_FL)
2420 set_bit(LLIF_PROJECT_INHERIT, &ll_i2info(inode)->lli_flags);
2422 clear_bit(LLIF_PROJECT_INHERIT, &ll_i2info(inode)->lli_flags);
2425 int ll_update_inode(struct inode *inode, struct lustre_md *md)
2427 struct ll_inode_info *lli = ll_i2info(inode);
2428 struct mdt_body *body = md->body;
2429 struct ll_sb_info *sbi = ll_i2sbi(inode);
2432 if (body->mbo_valid & OBD_MD_FLEASIZE) {
2433 rc = cl_file_inode_init(inode, md);
2438 if (S_ISDIR(inode->i_mode)) {
2439 rc = ll_update_lsm_md(inode, md);
2444 if (body->mbo_valid & OBD_MD_FLACL)
2445 lli_replace_acl(lli, md);
2447 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
2448 sbi->ll_flags & LL_SBI_32BIT_API);
2449 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
2451 if (body->mbo_valid & OBD_MD_FLATIME) {
2452 if (body->mbo_atime > inode->i_atime.tv_sec)
2453 inode->i_atime.tv_sec = body->mbo_atime;
2454 lli->lli_atime = body->mbo_atime;
2457 if (body->mbo_valid & OBD_MD_FLMTIME) {
2458 if (body->mbo_mtime > inode->i_mtime.tv_sec) {
2460 "setting ino %lu mtime from %lld to %llu\n",
2461 inode->i_ino, (s64)inode->i_mtime.tv_sec,
2463 inode->i_mtime.tv_sec = body->mbo_mtime;
2465 lli->lli_mtime = body->mbo_mtime;
2468 if (body->mbo_valid & OBD_MD_FLCTIME) {
2469 if (body->mbo_ctime > inode->i_ctime.tv_sec)
2470 inode->i_ctime.tv_sec = body->mbo_ctime;
2471 lli->lli_ctime = body->mbo_ctime;
2474 if (body->mbo_valid & OBD_MD_FLBTIME)
2475 lli->lli_btime = body->mbo_btime;
2477 /* Clear i_flags to remove S_NOSEC before permissions are updated */
2478 if (body->mbo_valid & OBD_MD_FLFLAGS)
2479 ll_update_inode_flags(inode, body->mbo_flags);
2480 if (body->mbo_valid & OBD_MD_FLMODE)
2481 inode->i_mode = (inode->i_mode & S_IFMT) |
2482 (body->mbo_mode & ~S_IFMT);
2484 if (body->mbo_valid & OBD_MD_FLTYPE)
2485 inode->i_mode = (inode->i_mode & ~S_IFMT) |
2486 (body->mbo_mode & S_IFMT);
2488 LASSERT(inode->i_mode != 0);
2489 if (body->mbo_valid & OBD_MD_FLUID)
2490 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
2491 if (body->mbo_valid & OBD_MD_FLGID)
2492 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
2493 if (body->mbo_valid & OBD_MD_FLPROJID)
2494 lli->lli_projid = body->mbo_projid;
2495 if (body->mbo_valid & OBD_MD_FLNLINK)
2496 set_nlink(inode, body->mbo_nlink);
2497 if (body->mbo_valid & OBD_MD_FLRDEV)
2498 inode->i_rdev = old_decode_dev(body->mbo_rdev);
2500 if (body->mbo_valid & OBD_MD_FLID) {
2501 /* FID shouldn't be changed! */
2502 if (fid_is_sane(&lli->lli_fid)) {
2503 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
2504 "Trying to change FID "DFID
2505 " to the "DFID", inode "DFID"(%p)\n",
2506 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
2507 PFID(ll_inode2fid(inode)), inode);
2509 lli->lli_fid = body->mbo_fid1;
2513 LASSERT(fid_seq(&lli->lli_fid) != 0);
2515 lli->lli_attr_valid = body->mbo_valid;
2516 if (body->mbo_valid & OBD_MD_FLSIZE) {
2517 i_size_write(inode, body->mbo_size);
2519 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
2520 PFID(ll_inode2fid(inode)),
2521 (unsigned long long)body->mbo_size);
2523 if (body->mbo_valid & OBD_MD_FLBLOCKS)
2524 inode->i_blocks = body->mbo_blocks;
2526 if (body->mbo_valid & OBD_MD_FLLAZYSIZE)
2527 lli->lli_lazysize = body->mbo_size;
2528 if (body->mbo_valid & OBD_MD_FLLAZYBLOCKS)
2529 lli->lli_lazyblocks = body->mbo_blocks;
2532 if (body->mbo_valid & OBD_MD_TSTATE) {
2533 /* Set LLIF_FILE_RESTORING if restore ongoing and
2534 * clear it when done to ensure to start again
2535 * glimpsing updated attrs
2537 if (body->mbo_t_state & MS_RESTORE)
2538 set_bit(LLIF_FILE_RESTORING, &lli->lli_flags);
2540 clear_bit(LLIF_FILE_RESTORING, &lli->lli_flags);
2546 int ll_read_inode2(struct inode *inode, void *opaque)
2548 struct lustre_md *md = opaque;
2549 struct ll_inode_info *lli = ll_i2info(inode);
2553 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2554 PFID(&lli->lli_fid), inode);
2556 /* Core attributes from the MDS first. This is a new inode, and
2557 * the VFS doesn't zero times in the core inode so we have to do
2558 * it ourselves. They will be overwritten by either MDS or OST
2559 * attributes - we just need to make sure they aren't newer.
2561 inode->i_mtime.tv_sec = 0;
2562 inode->i_atime.tv_sec = 0;
2563 inode->i_ctime.tv_sec = 0;
2565 rc = ll_update_inode(inode, md);
2569 /* OIDEBUG(inode); */
2571 #ifdef HAVE_BACKING_DEV_INFO
2572 /* initializing backing dev info. */
2573 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2575 if (S_ISREG(inode->i_mode)) {
2576 struct ll_sb_info *sbi = ll_i2sbi(inode);
2577 inode->i_op = &ll_file_inode_operations;
2578 inode->i_fop = sbi->ll_fop;
2579 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2581 } else if (S_ISDIR(inode->i_mode)) {
2582 inode->i_op = &ll_dir_inode_operations;
2583 inode->i_fop = &ll_dir_operations;
2585 } else if (S_ISLNK(inode->i_mode)) {
2586 inode->i_op = &ll_fast_symlink_inode_operations;
2589 inode->i_op = &ll_special_inode_operations;
2591 init_special_inode(inode, inode->i_mode,
2600 void ll_delete_inode(struct inode *inode)
2602 struct ll_inode_info *lli = ll_i2info(inode);
2603 struct address_space *mapping = &inode->i_data;
2604 unsigned long nrpages;
2605 unsigned long flags;
2609 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) {
2610 /* It is last chance to write out dirty pages,
2611 * otherwise we may lose data while umount.
2613 * If i_nlink is 0 then just discard data. This is safe because
2614 * local inode gets i_nlink 0 from server only for the last
2615 * unlink, so that file is not opened somewhere else
2617 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, inode->i_nlink ?
2618 CL_FSYNC_LOCAL : CL_FSYNC_DISCARD, 1);
2620 truncate_inode_pages_final(mapping);
2622 /* Workaround for LU-118: Note nrpages may not be totally updated when
2623 * truncate_inode_pages() returns, as there can be a page in the process
2624 * of deletion (inside __delete_from_page_cache()) in the specified
2625 * range. Thus mapping->nrpages can be non-zero when this function
2626 * returns even after truncation of the whole mapping. Only do this if
2627 * npages isn't already zero.
2629 nrpages = mapping->nrpages;
2631 ll_xa_lock_irqsave(&mapping->i_pages, flags);
2632 nrpages = mapping->nrpages;
2633 ll_xa_unlock_irqrestore(&mapping->i_pages, flags);
2634 } /* Workaround end */
2636 LASSERTF(nrpages == 0, "%s: inode="DFID"(%p) nrpages=%lu, "
2637 "see https://jira.whamcloud.com/browse/LU-118\n",
2638 ll_i2sbi(inode)->ll_fsname,
2639 PFID(ll_inode2fid(inode)), inode, nrpages);
2641 ll_clear_inode(inode);
2647 int ll_iocontrol(struct inode *inode, struct file *file,
2648 unsigned int cmd, unsigned long arg)
2650 struct ll_sb_info *sbi = ll_i2sbi(inode);
2651 struct ptlrpc_request *req = NULL;
2656 case FS_IOC_GETFLAGS: {
2657 struct mdt_body *body;
2658 struct md_op_data *op_data;
2660 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2661 0, 0, LUSTRE_OPC_ANY,
2663 if (IS_ERR(op_data))
2664 RETURN(PTR_ERR(op_data));
2666 op_data->op_valid = OBD_MD_FLFLAGS;
2667 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2668 ll_finish_md_op_data(op_data);
2670 CERROR("%s: failure inode "DFID": rc = %d\n",
2671 sbi->ll_md_exp->exp_obd->obd_name,
2672 PFID(ll_inode2fid(inode)), rc);
2676 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2678 flags = body->mbo_flags;
2680 ptlrpc_req_finished(req);
2682 RETURN(put_user(flags, (int __user *)arg));
2684 case FS_IOC_SETFLAGS: {
2686 struct md_op_data *op_data;
2687 struct cl_object *obj;
2688 struct fsxattr fa = { 0 };
2690 if (get_user(flags, (int __user *)arg))
2693 fa.fsx_projid = ll_i2info(inode)->lli_projid;
2694 if (flags & LUSTRE_PROJINHERIT_FL)
2695 fa.fsx_xflags = FS_XFLAG_PROJINHERIT;
2697 rc = ll_ioctl_check_project(inode, &fa);
2701 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2702 LUSTRE_OPC_ANY, NULL);
2703 if (IS_ERR(op_data))
2704 RETURN(PTR_ERR(op_data));
2706 op_data->op_attr_flags = flags;
2707 op_data->op_xvalid |= OP_XVALID_FLAGS;
2708 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2709 ll_finish_md_op_data(op_data);
2710 ptlrpc_req_finished(req);
2714 ll_update_inode_flags(inode, flags);
2716 obj = ll_i2info(inode)->lli_clob;
2720 OBD_ALLOC_PTR(attr);
2724 rc = cl_setattr_ost(obj, attr, OP_XVALID_FLAGS, flags);
2736 int ll_flush_ctx(struct inode *inode)
2738 struct ll_sb_info *sbi = ll_i2sbi(inode);
2740 CDEBUG(D_SEC, "flush context for user %d\n",
2741 from_kuid(&init_user_ns, current_uid()));
2743 obd_set_info_async(NULL, sbi->ll_md_exp,
2744 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2746 obd_set_info_async(NULL, sbi->ll_dt_exp,
2747 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2752 /* umount -f client means force down, don't save state */
2753 void ll_umount_begin(struct super_block *sb)
2755 struct ll_sb_info *sbi = ll_s2sbi(sb);
2756 struct obd_device *obd;
2757 struct obd_ioctl_data *ioc_data;
2761 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2762 sb->s_count, atomic_read(&sb->s_active));
2764 obd = class_exp2obd(sbi->ll_md_exp);
2766 CERROR("Invalid MDC connection handle %#llx\n",
2767 sbi->ll_md_exp->exp_handle.h_cookie);
2773 obd = class_exp2obd(sbi->ll_dt_exp);
2775 CERROR("Invalid LOV connection handle %#llx\n",
2776 sbi->ll_dt_exp->exp_handle.h_cookie);
2782 OBD_ALLOC_PTR(ioc_data);
2784 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2785 sizeof *ioc_data, ioc_data, NULL);
2787 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2788 sizeof *ioc_data, ioc_data, NULL);
2790 OBD_FREE_PTR(ioc_data);
2793 /* Really, we'd like to wait until there are no requests outstanding,
2794 * and then continue. For now, we just periodically checking for vfs
2795 * to decrement mnt_cnt and hope to finish it within 10sec.
2799 !may_umount(sbi->ll_mnt.mnt)) {
2807 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2809 struct ll_sb_info *sbi = ll_s2sbi(sb);
2810 char *profilenm = get_profile_name(sb);
2814 if ((*flags & MS_RDONLY) != (sb->s_flags & SB_RDONLY)) {
2815 read_only = *flags & MS_RDONLY;
2816 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2817 sizeof(KEY_READ_ONLY),
2818 KEY_READ_ONLY, sizeof(read_only),
2821 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2822 profilenm, read_only ?
2823 "read-only" : "read-write", err);
2828 sb->s_flags |= SB_RDONLY;
2830 sb->s_flags &= ~SB_RDONLY;
2832 if (sbi->ll_flags & LL_SBI_VERBOSE)
2833 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2834 read_only ? "read-only" : "read-write");
2840 * Cleanup the open handle that is cached on MDT-side.
2842 * For open case, the client side open handling thread may hit error
2843 * after the MDT grant the open. Under such case, the client should
2844 * send close RPC to the MDT as cleanup; otherwise, the open handle
2845 * on the MDT will be leaked there until the client umount or evicted.
2847 * In further, if someone unlinked the file, because the open handle
2848 * holds the reference on such file/object, then it will block the
2849 * subsequent threads that want to locate such object via FID.
2851 * \param[in] sb super block for this file-system
2852 * \param[in] open_req pointer to the original open request
2854 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2856 struct mdt_body *body;
2857 struct md_op_data *op_data;
2858 struct ptlrpc_request *close_req = NULL;
2859 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2862 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2863 OBD_ALLOC_PTR(op_data);
2864 if (op_data == NULL) {
2865 CWARN("%s: cannot allocate op_data to release open handle for "
2866 DFID"\n", ll_s2sbi(sb)->ll_fsname, PFID(&body->mbo_fid1));
2871 op_data->op_fid1 = body->mbo_fid1;
2872 op_data->op_open_handle = body->mbo_open_handle;
2873 op_data->op_mod_time = ktime_get_real_seconds();
2874 md_close(exp, op_data, NULL, &close_req);
2875 ptlrpc_req_finished(close_req);
2876 ll_finish_md_op_data(op_data);
2881 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2882 struct super_block *sb, struct lookup_intent *it)
2884 struct ll_sb_info *sbi = NULL;
2885 struct lustre_md md = { NULL };
2886 bool default_lmv_deleted = false;
2891 LASSERT(*inode || sb);
2892 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2893 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2894 sbi->ll_md_exp, &md);
2899 * clear default_lmv only if intent_getattr reply doesn't contain it.
2900 * but it needs to be done after iget, check this early because
2901 * ll_update_lsm_md() may change md.
2903 if (it && (it->it_op & (IT_LOOKUP | IT_GETATTR)) &&
2904 S_ISDIR(md.body->mbo_mode) && !md.default_lmv)
2905 default_lmv_deleted = true;
2908 rc = ll_update_inode(*inode, &md);
2912 LASSERT(sb != NULL);
2915 * At this point server returns to client's same fid as client
2916 * generated for creating. So using ->fid1 is okay here.
2918 if (!fid_is_sane(&md.body->mbo_fid1)) {
2919 CERROR("%s: Fid is insane "DFID"\n",
2921 PFID(&md.body->mbo_fid1));
2922 GOTO(out, rc = -EINVAL);
2925 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2926 sbi->ll_flags & LL_SBI_32BIT_API),
2928 if (IS_ERR(*inode)) {
2930 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2932 CERROR("new_inode -fatal: rc %d\n", rc);
2937 /* Handling piggyback layout lock.
2938 * Layout lock can be piggybacked by getattr and open request.
2939 * The lsm can be applied to inode only if it comes with a layout lock
2940 * otherwise correct layout may be overwritten, for example:
2941 * 1. proc1: mdt returns a lsm but not granting layout
2942 * 2. layout was changed by another client
2943 * 3. proc2: refresh layout and layout lock granted
2944 * 4. proc1: to apply a stale layout */
2945 if (it != NULL && it->it_lock_mode != 0) {
2946 struct lustre_handle lockh;
2947 struct ldlm_lock *lock;
2949 lockh.cookie = it->it_lock_handle;
2950 lock = ldlm_handle2lock(&lockh);
2951 LASSERT(lock != NULL);
2952 if (ldlm_has_layout(lock)) {
2953 struct cl_object_conf conf;
2955 memset(&conf, 0, sizeof(conf));
2956 conf.coc_opc = OBJECT_CONF_SET;
2957 conf.coc_inode = *inode;
2958 conf.coc_lock = lock;
2959 conf.u.coc_layout = md.layout;
2960 (void)ll_layout_conf(*inode, &conf);
2962 LDLM_LOCK_PUT(lock);
2965 if (default_lmv_deleted)
2966 ll_update_default_lsm_md(*inode, &md);
2968 /* we may want to apply some policy for foreign file/dir */
2969 if (ll_sbi_has_foreign_symlink(sbi)) {
2970 rc = ll_manage_foreign(*inode, &md);
2978 /* cleanup will be done if necessary */
2979 md_free_lustre_md(sbi->ll_md_exp, &md);
2981 if (rc != 0 && it != NULL && it->it_op & IT_OPEN) {
2982 ll_intent_drop_lock(it);
2983 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2989 int ll_obd_statfs(struct inode *inode, void __user *arg)
2991 struct ll_sb_info *sbi = NULL;
2992 struct obd_export *exp;
2993 struct obd_ioctl_data *data = NULL;
2998 sbi = ll_i2sbi(inode);
3000 GOTO(out_statfs, rc = -EINVAL);
3002 rc = obd_ioctl_getdata(&data, &len, arg);
3004 GOTO(out_statfs, rc);
3006 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
3007 !data->ioc_pbuf1 || !data->ioc_pbuf2)
3008 GOTO(out_statfs, rc = -EINVAL);
3010 if (data->ioc_inllen1 != sizeof(__u32) ||
3011 data->ioc_inllen2 != sizeof(__u32) ||
3012 data->ioc_plen1 != sizeof(struct obd_statfs) ||
3013 data->ioc_plen2 != sizeof(struct obd_uuid))
3014 GOTO(out_statfs, rc = -EINVAL);
3016 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
3017 if (type & LL_STATFS_LMV)
3018 exp = sbi->ll_md_exp;
3019 else if (type & LL_STATFS_LOV)
3020 exp = sbi->ll_dt_exp;
3022 GOTO(out_statfs, rc = -ENODEV);
3024 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, data, NULL);
3026 GOTO(out_statfs, rc);
3028 OBD_FREE_LARGE(data, len);
3033 * this is normally called in ll_fini_md_op_data(), but sometimes it needs to
3034 * be called early to avoid deadlock.
3036 void ll_unlock_md_op_lsm(struct md_op_data *op_data)
3038 if (op_data->op_mea2_sem) {
3039 up_read_non_owner(op_data->op_mea2_sem);
3040 op_data->op_mea2_sem = NULL;
3043 if (op_data->op_mea1_sem) {
3044 up_read_non_owner(op_data->op_mea1_sem);
3045 op_data->op_mea1_sem = NULL;
3049 /* this function prepares md_op_data hint for passing it down to MD stack. */
3050 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
3051 struct inode *i1, struct inode *i2,
3052 const char *name, size_t namelen,
3053 __u32 mode, enum md_op_code opc,
3056 LASSERT(i1 != NULL);
3059 /* Do not reuse namelen for something else. */
3061 return ERR_PTR(-EINVAL);
3063 if (namelen > ll_i2sbi(i1)->ll_namelen)
3064 return ERR_PTR(-ENAMETOOLONG);
3066 /* "/" is not valid name, but it's allowed */
3067 if (!lu_name_is_valid_2(name, namelen) &&
3068 strncmp("/", name, namelen) != 0)
3069 return ERR_PTR(-EINVAL);
3072 if (op_data == NULL)
3073 OBD_ALLOC_PTR(op_data);
3075 if (op_data == NULL)
3076 return ERR_PTR(-ENOMEM);
3078 ll_i2gids(op_data->op_suppgids, i1, i2);
3079 op_data->op_fid1 = *ll_inode2fid(i1);
3080 op_data->op_code = opc;
3082 if (S_ISDIR(i1->i_mode)) {
3083 down_read_non_owner(&ll_i2info(i1)->lli_lsm_sem);
3084 op_data->op_mea1_sem = &ll_i2info(i1)->lli_lsm_sem;
3085 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
3086 op_data->op_default_mea1 = ll_i2info(i1)->lli_default_lsm_md;
3090 op_data->op_fid2 = *ll_inode2fid(i2);
3091 if (S_ISDIR(i2->i_mode)) {
3093 /* i2 is typically a child of i1, and MUST be
3094 * further from the root to avoid deadlocks.
3096 down_read_non_owner(&ll_i2info(i2)->lli_lsm_sem);
3097 op_data->op_mea2_sem =
3098 &ll_i2info(i2)->lli_lsm_sem;
3100 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
3103 fid_zero(&op_data->op_fid2);
3106 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
3107 op_data->op_cli_flags |= CLI_HASH64;
3109 if (ll_need_32bit_api(ll_i2sbi(i1)))
3110 op_data->op_cli_flags |= CLI_API32;
3112 op_data->op_name = name;
3113 op_data->op_namelen = namelen;
3114 op_data->op_mode = mode;
3115 op_data->op_mod_time = ktime_get_real_seconds();
3116 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
3117 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
3118 op_data->op_cap = cfs_curproc_cap_pack();
3119 op_data->op_mds = 0;
3120 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
3121 filename_is_volatile(name, namelen, &op_data->op_mds)) {
3122 op_data->op_bias |= MDS_CREATE_VOLATILE;
3124 op_data->op_data = data;
3129 void ll_finish_md_op_data(struct md_op_data *op_data)
3131 ll_unlock_md_op_lsm(op_data);
3132 security_release_secctx(op_data->op_file_secctx,
3133 op_data->op_file_secctx_size);
3134 llcrypt_free_ctx(op_data->op_file_encctx, op_data->op_file_encctx_size);
3135 OBD_FREE_PTR(op_data);
3138 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
3140 struct ll_sb_info *sbi;
3142 LASSERT(seq && dentry);
3143 sbi = ll_s2sbi(dentry->d_sb);
3145 if (sbi->ll_flags & LL_SBI_NOLCK)
3146 seq_puts(seq, ",nolock");
3148 /* "flock" is the default since 2.13, but it wasn't for many years,
3149 * so it is still useful to print this to show it is enabled.
3150 * Start to print "noflock" so it is now clear when flock is disabled.
3152 if (sbi->ll_flags & LL_SBI_FLOCK)
3153 seq_puts(seq, ",flock");
3154 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
3155 seq_puts(seq, ",localflock");
3157 seq_puts(seq, ",noflock");
3159 if (sbi->ll_flags & LL_SBI_USER_XATTR)
3160 seq_puts(seq, ",user_xattr");
3162 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
3163 seq_puts(seq, ",lazystatfs");
3165 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
3166 seq_puts(seq, ",user_fid2path");
3168 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
3169 seq_puts(seq, ",always_ping");
3171 if (ll_sbi_has_test_dummy_encryption(sbi))
3172 seq_puts(seq, ",test_dummy_encryption");
3174 if (ll_sbi_has_encrypt(sbi))
3175 seq_puts(seq, ",encrypt");
3177 seq_puts(seq, ",noencrypt");
3179 if (sbi->ll_flags & LL_SBI_FOREIGN_SYMLINK) {
3180 seq_puts(seq, ",foreign_symlink=");
3181 seq_puts(seq, sbi->ll_foreign_symlink_prefix);
3188 * Get obd name by cmd, and copy out to user space
3190 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
3192 struct ll_sb_info *sbi = ll_i2sbi(inode);
3193 struct obd_device *obd;
3196 if (cmd == OBD_IOC_GETNAME_OLD || cmd == OBD_IOC_GETDTNAME)
3197 obd = class_exp2obd(sbi->ll_dt_exp);
3198 else if (cmd == OBD_IOC_GETMDNAME)
3199 obd = class_exp2obd(sbi->ll_md_exp);
3206 if (copy_to_user((void __user *)arg, obd->obd_name,
3207 strlen(obd->obd_name) + 1))
3213 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
3220 p.mnt = current->fs->root.mnt;
3222 path = d_path(&p, buf, bufsize);
3227 void ll_dirty_page_discard_warn(struct page *page, int ioret)
3229 char *buf, *path = NULL;
3230 struct dentry *dentry = NULL;
3231 struct inode *inode = page->mapping->host;
3233 /* this can be called inside spin lock so use GFP_ATOMIC. */
3234 buf = (char *)__get_free_page(GFP_ATOMIC);
3236 dentry = d_find_alias(page->mapping->host);
3238 path = ll_d_path(dentry, buf, PAGE_SIZE);
3241 /* The below message is checked in recovery-small.sh test_24b */
3243 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
3244 "(rc %d)\n", ll_i2sbi(inode)->ll_fsname,
3245 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
3246 PFID(ll_inode2fid(inode)),
3247 (path && !IS_ERR(path)) ? path : "", ioret);
3253 free_page((unsigned long)buf);
3256 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
3257 struct lov_user_md **kbuf)
3259 struct lov_user_md lum;
3263 if (copy_from_user(&lum, md, sizeof(lum)))
3266 lum_size = ll_lov_user_md_size(&lum);
3270 OBD_ALLOC_LARGE(*kbuf, lum_size);
3274 if (copy_from_user(*kbuf, md, lum_size) != 0) {
3275 OBD_FREE_LARGE(*kbuf, lum_size);
3283 * Compute llite root squash state after a change of root squash
3284 * configuration setting or add/remove of a lnet nid
3286 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
3288 struct root_squash_info *squash = &sbi->ll_squash;
3291 struct lnet_process_id id;
3293 /* Update norootsquash flag */
3294 spin_lock(&squash->rsi_lock);
3295 if (list_empty(&squash->rsi_nosquash_nids))
3296 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
3298 /* Do not apply root squash as soon as one of our NIDs is
3299 * in the nosquash_nids list */
3302 while (LNetGetId(i++, &id) != -ENOENT) {
3303 if (id.nid == LNET_NID_LO_0)
3305 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
3311 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
3313 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
3315 spin_unlock(&squash->rsi_lock);
3319 * Parse linkea content to extract information about a given hardlink
3321 * \param[in] ldata - Initialized linkea data
3322 * \param[in] linkno - Link identifier
3323 * \param[out] parent_fid - The entry's parent FID
3324 * \param[out] ln - Entry name destination buffer
3326 * \retval 0 on success
3327 * \retval Appropriate negative error code on failure
3329 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
3330 struct lu_fid *parent_fid, struct lu_name *ln)
3336 rc = linkea_init_with_rec(ldata);
3340 if (linkno >= ldata->ld_leh->leh_reccount)
3341 /* beyond last link */
3344 linkea_first_entry(ldata);
3345 for (idx = 0; ldata->ld_lee != NULL; idx++) {
3346 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
3351 linkea_next_entry(ldata);
3361 * Get parent FID and name of an identified link. Operation is performed for
3362 * a given link number, letting the caller iterate over linkno to list one or
3363 * all links of an entry.
3365 * \param[in] file - File descriptor against which to perform the operation
3366 * \param[in,out] arg - User-filled structure containing the linkno to operate
3367 * on and the available size. It is eventually filled with
3368 * the requested information or left untouched on error
3370 * \retval - 0 on success
3371 * \retval - Appropriate negative error code on failure
3373 int ll_getparent(struct file *file, struct getparent __user *arg)
3375 struct inode *inode = file_inode(file);
3376 struct linkea_data *ldata;
3377 struct lu_buf buf = LU_BUF_NULL;
3379 struct lu_fid parent_fid;
3386 if (!capable(CAP_DAC_READ_SEARCH) &&
3387 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
3390 if (get_user(name_size, &arg->gp_name_size))
3393 if (get_user(linkno, &arg->gp_linkno))
3396 if (name_size > PATH_MAX)
3399 OBD_ALLOC(ldata, sizeof(*ldata));
3403 rc = linkea_data_new(ldata, &buf);
3405 GOTO(ldata_free, rc);
3407 rc = ll_xattr_list(inode, XATTR_NAME_LINK, XATTR_TRUSTED_T, buf.lb_buf,
3408 buf.lb_len, OBD_MD_FLXATTR);
3412 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
3416 if (ln.ln_namelen >= name_size)
3417 GOTO(lb_free, rc = -EOVERFLOW);
3419 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
3420 GOTO(lb_free, rc = -EFAULT);
3422 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
3423 GOTO(lb_free, rc = -EFAULT);
3425 if (put_user('\0', arg->gp_name + ln.ln_namelen))
3426 GOTO(lb_free, rc = -EFAULT);
3431 OBD_FREE(ldata, sizeof(*ldata));