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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/llite/llite_lib.c
38 * Lustre Light Super operations
41 #define DEBUG_SUBSYSTEM S_LLITE
43 #include <linux/module.h>
44 #include <linux/statfs.h>
45 #include <linux/time.h>
46 #include <linux/types.h>
47 #include <linux/version.h>
49 #include <linux/user_namespace.h>
50 #ifdef HAVE_UIDGID_HEADER
51 # include <linux/uidgid.h>
54 #include <lustre_ioctl.h>
55 #include <lustre_ha.h>
56 #include <lustre_dlm.h>
57 #include <lprocfs_status.h>
58 #include <lustre_disk.h>
59 #include <lustre_param.h>
60 #include <lustre_log.h>
61 #include <cl_object.h>
62 #include <obd_cksum.h>
63 #include "llite_internal.h"
65 struct kmem_cache *ll_file_data_slab;
68 #define log2(n) ffz(~(n))
71 static struct ll_sb_info *ll_init_sbi(void)
73 struct ll_sb_info *sbi = NULL;
75 unsigned long lru_page_max;
85 spin_lock_init(&sbi->ll_lock);
86 mutex_init(&sbi->ll_lco.lco_lock);
87 spin_lock_init(&sbi->ll_pp_extent_lock);
88 spin_lock_init(&sbi->ll_process_lock);
89 sbi->ll_rw_stats_on = 0;
92 pages = si.totalram - si.totalhigh;
93 lru_page_max = pages / 2;
95 /* initialize ll_cache data */
96 sbi->ll_cache = cl_cache_init(lru_page_max);
97 if (sbi->ll_cache == NULL) {
98 OBD_FREE(sbi, sizeof(*sbi));
102 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
103 SBI_DEFAULT_READAHEAD_MAX);
104 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
105 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
106 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
108 ll_generate_random_uuid(uuid);
109 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
110 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
112 sbi->ll_flags |= LL_SBI_VERBOSE;
113 #ifdef ENABLE_CHECKSUM
114 sbi->ll_flags |= LL_SBI_CHECKSUM;
117 #ifdef HAVE_LRU_RESIZE_SUPPORT
118 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
120 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
122 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
123 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
125 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
129 /* metadata statahead is enabled by default */
130 sbi->ll_sa_max = LL_SA_RPC_DEF;
131 atomic_set(&sbi->ll_sa_total, 0);
132 atomic_set(&sbi->ll_sa_wrong, 0);
133 atomic_set(&sbi->ll_sa_running, 0);
134 atomic_set(&sbi->ll_agl_total, 0);
135 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
136 sbi->ll_flags |= LL_SBI_FAST_READ;
139 sbi->ll_squash.rsi_uid = 0;
140 sbi->ll_squash.rsi_gid = 0;
141 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
142 init_rwsem(&sbi->ll_squash.rsi_sem);
147 static void ll_free_sbi(struct super_block *sb)
149 struct ll_sb_info *sbi = ll_s2sbi(sb);
153 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
154 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
155 if (sbi->ll_cache != NULL) {
156 cl_cache_decref(sbi->ll_cache);
157 sbi->ll_cache = NULL;
159 OBD_FREE(sbi, sizeof(*sbi));
164 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
165 struct vfsmount *mnt)
167 struct inode *root = NULL;
168 struct ll_sb_info *sbi = ll_s2sbi(sb);
169 struct obd_device *obd;
170 struct obd_statfs *osfs = NULL;
171 struct ptlrpc_request *request = NULL;
172 struct obd_connect_data *data = NULL;
173 struct obd_uuid *uuid;
174 struct md_op_data *op_data;
175 struct lustre_md lmd;
177 int size, err, checksum;
180 obd = class_name2obd(md);
182 CERROR("MD %s: not setup or attached\n", md);
196 /* indicate the features supported by this client */
197 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
198 OBD_CONNECT_ATTRFID |
199 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
200 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
201 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
202 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
203 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
204 OBD_CONNECT_64BITHASH |
205 OBD_CONNECT_EINPROGRESS |
206 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
207 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
208 OBD_CONNECT_MAX_EASIZE |
209 OBD_CONNECT_FLOCK_DEAD |
210 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
211 OBD_CONNECT_OPEN_BY_FID |
212 OBD_CONNECT_DIR_STRIPE |
213 OBD_CONNECT_BULK_MBITS |
214 OBD_CONNECT_SUBTREE |
217 data->ocd_connect_flags2 = 0;
219 #ifdef HAVE_LRU_RESIZE_SUPPORT
220 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
221 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
223 #ifdef CONFIG_FS_POSIX_ACL
224 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
227 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
228 /* flag mdc connection as lightweight, only used for test
229 * purpose, use with care */
230 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
232 data->ocd_ibits_known = MDS_INODELOCK_FULL;
233 data->ocd_version = LUSTRE_VERSION_CODE;
235 if (sb->s_flags & MS_RDONLY)
236 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
237 if (sbi->ll_flags & LL_SBI_USER_XATTR)
238 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
240 if (sbi->ll_flags & LL_SBI_FLOCK)
241 sbi->ll_fop = &ll_file_operations_flock;
242 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
243 sbi->ll_fop = &ll_file_operations;
245 sbi->ll_fop = &ll_file_operations_noflock;
248 data->ocd_connect_flags |= OBD_CONNECT_REAL;
250 /* always ping even if server suppress_pings */
251 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
252 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
254 data->ocd_brw_size = MD_MAX_BRW_SIZE;
256 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
258 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
259 "recovery, of which this client is not a "
260 "part. Please wait for recovery to complete,"
261 " abort, or time out.\n", md);
264 CERROR("cannot connect to %s: rc = %d\n", md, err);
268 sbi->ll_md_exp->exp_connect_data = *data;
270 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
271 LUSTRE_SEQ_METADATA);
273 CERROR("%s: Can't init metadata layer FID infrastructure, "
274 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
278 /* For mount, we only need fs info from MDT0, and also in DNE, it
279 * can make sure the client can be mounted as long as MDT0 is
281 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
282 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
283 OBD_STATFS_FOR_MDT0);
285 GOTO(out_md_fid, err);
287 /* This needs to be after statfs to ensure connect has finished.
288 * Note that "data" does NOT contain the valid connect reply.
289 * If connecting to a 1.8 server there will be no LMV device, so
290 * we can access the MDC export directly and exp_connect_flags will
291 * be non-zero, but if accessing an upgraded 2.1 server it will
292 * have the correct flags filled in.
293 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
294 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
295 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
296 valid != CLIENT_CONNECT_MDT_REQD) {
299 OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
300 obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
301 valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
302 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
303 "feature(s) needed for correct operation "
304 "of this client (%s). Please upgrade "
305 "server or downgrade client.\n",
306 sbi->ll_md_exp->exp_obd->obd_name, buf);
307 OBD_FREE(buf, PAGE_CACHE_SIZE);
308 GOTO(out_md_fid, err = -EPROTO);
311 size = sizeof(*data);
312 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
313 KEY_CONN_DATA, &size, data);
315 CERROR("%s: Get connect data failed: rc = %d\n",
316 sbi->ll_md_exp->exp_obd->obd_name, err);
317 GOTO(out_md_fid, err);
320 LASSERT(osfs->os_bsize);
321 sb->s_blocksize = osfs->os_bsize;
322 sb->s_blocksize_bits = log2(osfs->os_bsize);
323 sb->s_magic = LL_SUPER_MAGIC;
324 sb->s_maxbytes = MAX_LFS_FILESIZE;
325 sbi->ll_namelen = osfs->os_namelen;
327 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
328 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
329 LCONSOLE_INFO("Disabling user_xattr feature because "
330 "it is not supported on the server\n");
331 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
334 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
336 sb->s_flags |= MS_POSIXACL;
338 sbi->ll_flags |= LL_SBI_ACL;
340 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
342 sb->s_flags &= ~MS_POSIXACL;
344 sbi->ll_flags &= ~LL_SBI_ACL;
347 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
348 sbi->ll_flags |= LL_SBI_64BIT_HASH;
350 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
351 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
353 sbi->ll_md_brw_pages = 1;
355 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
356 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
358 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
359 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
360 LCONSOLE_INFO("%s: disabling xattr cache due to "
361 "unknown maximum xattr size.\n", dt);
363 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
364 sbi->ll_xattr_cache_enabled = 1;
368 obd = class_name2obd(dt);
370 CERROR("DT %s: not setup or attached\n", dt);
371 GOTO(out_md_fid, err = -ENODEV);
374 /* pass client page size via ocd_grant_blkbits, the server should report
375 * back its backend blocksize for grant calculation purpose */
376 data->ocd_grant_blkbits = PAGE_SHIFT;
378 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
379 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
380 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
381 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
382 OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
383 OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
384 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
385 OBD_CONNECT_EINPROGRESS |
386 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
387 OBD_CONNECT_LAYOUTLOCK |
388 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
389 OBD_CONNECT_BULK_MBITS;
391 data->ocd_connect_flags2 = 0;
393 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
394 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
396 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
397 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
398 * disabled by default, because it can still be enabled on the
399 * fly via /proc. As a consequence, we still need to come to an
400 * agreement on the supported algorithms at connect time */
401 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
403 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
404 data->ocd_cksum_types = OBD_CKSUM_ADLER;
406 data->ocd_cksum_types = cksum_types_supported_client();
409 #ifdef HAVE_LRU_RESIZE_SUPPORT
410 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
412 /* always ping even if server suppress_pings */
413 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
414 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
416 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
417 "ocd_grant: %d\n", data->ocd_connect_flags,
418 data->ocd_version, data->ocd_grant);
420 obd->obd_upcall.onu_owner = &sbi->ll_lco;
421 obd->obd_upcall.onu_upcall = cl_ocd_update;
423 data->ocd_brw_size = DT_MAX_BRW_SIZE;
425 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
428 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
429 "recovery, of which this client is not a "
430 "part. Please wait for recovery to "
431 "complete, abort, or time out.\n", dt);
434 CERROR("%s: Cannot connect to %s: rc = %d\n",
435 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
439 sbi->ll_dt_exp->exp_connect_data = *data;
441 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
442 LUSTRE_SEQ_METADATA);
444 CERROR("%s: Can't init data layer FID infrastructure, "
445 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
449 mutex_lock(&sbi->ll_lco.lco_lock);
450 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
451 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
452 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
453 mutex_unlock(&sbi->ll_lco.lco_lock);
455 fid_zero(&sbi->ll_root_fid);
456 err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
459 CERROR("cannot mds_connect: rc = %d\n", err);
460 GOTO(out_lock_cn_cb, err);
462 if (!fid_is_sane(&sbi->ll_root_fid)) {
463 CERROR("%s: Invalid root fid "DFID" during mount\n",
464 sbi->ll_md_exp->exp_obd->obd_name,
465 PFID(&sbi->ll_root_fid));
466 GOTO(out_lock_cn_cb, err = -EINVAL);
468 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
470 sb->s_op = &lustre_super_operations;
471 #if THREAD_SIZE >= 8192 /*b=17630*/
472 sb->s_export_op = &lustre_export_operations;
476 * XXX: move this to after cbd setup? */
477 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
478 if (sbi->ll_flags & LL_SBI_ACL)
479 valid |= OBD_MD_FLACL;
481 OBD_ALLOC_PTR(op_data);
483 GOTO(out_lock_cn_cb, err = -ENOMEM);
485 op_data->op_fid1 = sbi->ll_root_fid;
486 op_data->op_mode = 0;
487 op_data->op_valid = valid;
489 err = md_getattr(sbi->ll_md_exp, op_data, &request);
491 OBD_FREE_PTR(op_data);
493 CERROR("%s: md_getattr failed for root: rc = %d\n",
494 sbi->ll_md_exp->exp_obd->obd_name, err);
495 GOTO(out_lock_cn_cb, err);
498 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
499 sbi->ll_md_exp, &lmd);
501 CERROR("failed to understand root inode md: rc = %d\n", err);
502 ptlrpc_req_finished(request);
503 GOTO(out_lock_cn_cb, err);
506 LASSERT(fid_is_sane(&sbi->ll_root_fid));
507 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
508 sbi->ll_flags & LL_SBI_32BIT_API),
510 md_free_lustre_md(sbi->ll_md_exp, &lmd);
511 ptlrpc_req_finished(request);
514 #ifdef CONFIG_FS_POSIX_ACL
516 posix_acl_release(lmd.posix_acl);
517 lmd.posix_acl = NULL;
520 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
522 CERROR("lustre_lite: bad iget4 for root\n");
526 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
527 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
528 KEY_CHECKSUM, sizeof(checksum), &checksum,
532 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
533 KEY_CACHE_SET, sizeof(*sbi->ll_cache),
534 sbi->ll_cache, NULL);
536 sb->s_root = d_make_root(root);
537 if (sb->s_root == NULL) {
538 CERROR("%s: can't make root dentry\n",
539 ll_get_fsname(sb, NULL, 0));
540 GOTO(out_root, err = -ENOMEM);
542 #ifdef HAVE_DCACHE_LOCK
543 sb->s_root->d_op = &ll_d_ops;
546 sbi->ll_sdev_orig = sb->s_dev;
548 /* We set sb->s_dev equal on all lustre clients in order to support
549 * NFS export clustering. NFSD requires that the FSID be the same
551 /* s_dev is also used in lt_compare() to compare two fs, but that is
552 * only a node-local comparison. */
553 uuid = obd_get_uuid(sbi->ll_md_exp);
555 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
561 if (proc_lustre_fs_root != NULL) {
562 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
565 CERROR("%s: could not register mount in lprocfs: "
566 "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
576 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
578 obd_disconnect(sbi->ll_dt_exp);
579 sbi->ll_dt_exp = NULL;
581 obd_fid_fini(sbi->ll_md_exp->exp_obd);
583 obd_disconnect(sbi->ll_md_exp);
584 sbi->ll_md_exp = NULL;
593 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
597 size = sizeof(*lmmsize);
598 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
599 KEY_MAX_EASIZE, &size, lmmsize);
601 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
602 sbi->ll_dt_exp->exp_obd->obd_name, rc);
607 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
608 KEY_MAX_EASIZE, &size, lmmsize);
610 CERROR("Get max mdsize error rc %d\n", rc);
616 * Get the value of the default_easize parameter.
618 * \see client_obd::cl_default_mds_easize
620 * \param[in] sbi superblock info for this filesystem
621 * \param[out] lmmsize pointer to storage location for value
623 * \retval 0 on success
624 * \retval negative negated errno on failure
626 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
631 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
632 KEY_DEFAULT_EASIZE, &size, lmmsize);
634 CERROR("Get default mdsize error rc %d\n", rc);
640 * Set the default_easize parameter to the given value.
642 * \see client_obd::cl_default_mds_easize
644 * \param[in] sbi superblock info for this filesystem
645 * \param[in] lmmsize the size to set
647 * \retval 0 on success
648 * \retval negative negated errno on failure
650 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
654 if (lmmsize < sizeof(struct lov_mds_md) ||
655 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
658 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
659 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
660 sizeof(int), &lmmsize, NULL);
665 static void ll_dump_inode(struct inode *inode)
667 struct ll_d_hlist_node *tmp;
668 int dentry_count = 0;
670 LASSERT(inode != NULL);
672 ll_d_hlist_for_each(tmp, &inode->i_dentry)
675 CERROR("%s: inode %p dump: dev=%s fid="DFID
676 " mode=%o count=%u, %d dentries\n",
677 ll_get_fsname(inode->i_sb, NULL, 0), inode,
678 ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
679 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
682 void lustre_dump_dentry(struct dentry *dentry, int recur)
684 struct list_head *tmp;
687 LASSERT(dentry != NULL);
689 list_for_each(tmp, &dentry->d_subdirs)
692 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
693 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
694 dentry->d_name.len, dentry->d_name.name,
695 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
696 dentry->d_parent, dentry->d_inode, ll_d_count(dentry),
697 dentry->d_flags, dentry->d_fsdata, subdirs);
698 if (dentry->d_inode != NULL)
699 ll_dump_inode(dentry->d_inode);
704 list_for_each(tmp, &dentry->d_subdirs) {
705 struct dentry *d = list_entry(tmp, struct dentry, d_child);
706 lustre_dump_dentry(d, recur - 1);
710 static void client_common_put_super(struct super_block *sb)
712 struct ll_sb_info *sbi = ll_s2sbi(sb);
717 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
718 obd_disconnect(sbi->ll_dt_exp);
719 sbi->ll_dt_exp = NULL;
721 lprocfs_unregister_mountpoint(sbi);
723 obd_fid_fini(sbi->ll_md_exp->exp_obd);
724 obd_disconnect(sbi->ll_md_exp);
725 sbi->ll_md_exp = NULL;
730 void ll_kill_super(struct super_block *sb)
732 struct ll_sb_info *sbi;
736 if (!(sb->s_flags & MS_ACTIVE))
740 /* we need restore s_dev from changed for clustred NFS before put_super
741 * because new kernels have cached s_dev and change sb->s_dev in
742 * put_super not affected real removing devices */
744 sb->s_dev = sbi->ll_sdev_orig;
745 sbi->ll_umounting = 1;
747 /* wait running statahead threads to quit */
748 while (atomic_read(&sbi->ll_sa_running) > 0) {
749 set_current_state(TASK_UNINTERRUPTIBLE);
750 schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC >> 3));
757 static inline int ll_set_opt(const char *opt, char *data, int fl)
759 if (strncmp(opt, data, strlen(opt)) != 0)
765 /* non-client-specific mount options are parsed in lmd_parse */
766 static int ll_options(char *options, int *flags)
769 char *s1 = options, *s2;
775 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
778 CDEBUG(D_SUPER, "next opt=%s\n", s1);
779 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
784 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
789 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
794 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
799 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
804 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
809 tmp = ll_set_opt("context", s1, 1);
812 tmp = ll_set_opt("fscontext", s1, 1);
815 tmp = ll_set_opt("defcontext", s1, 1);
818 tmp = ll_set_opt("rootcontext", s1, 1);
821 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
826 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
832 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
837 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
842 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
847 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
852 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
857 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
862 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
867 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
872 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
877 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
882 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
888 s2 = strchr(s1, ',');
896 void ll_lli_init(struct ll_inode_info *lli)
898 lli->lli_inode_magic = LLI_INODE_MAGIC;
900 spin_lock_init(&lli->lli_lock);
901 lli->lli_posix_acl = NULL;
902 /* Do not set lli_fid, it has been initialized already. */
903 fid_zero(&lli->lli_pfid);
904 lli->lli_mds_read_och = NULL;
905 lli->lli_mds_write_och = NULL;
906 lli->lli_mds_exec_och = NULL;
907 lli->lli_open_fd_read_count = 0;
908 lli->lli_open_fd_write_count = 0;
909 lli->lli_open_fd_exec_count = 0;
910 mutex_init(&lli->lli_och_mutex);
911 spin_lock_init(&lli->lli_agl_lock);
912 spin_lock_init(&lli->lli_layout_lock);
913 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
914 lli->lli_clob = NULL;
916 init_rwsem(&lli->lli_xattrs_list_rwsem);
917 mutex_init(&lli->lli_xattrs_enq_lock);
919 LASSERT(lli->lli_vfs_inode.i_mode != 0);
920 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
921 mutex_init(&lli->lli_readdir_mutex);
922 lli->lli_opendir_key = NULL;
924 spin_lock_init(&lli->lli_sa_lock);
925 lli->lli_opendir_pid = 0;
926 lli->lli_sa_enabled = 0;
927 lli->lli_def_stripe_offset = -1;
929 mutex_init(&lli->lli_size_mutex);
930 lli->lli_symlink_name = NULL;
931 init_rwsem(&lli->lli_trunc_sem);
932 range_lock_tree_init(&lli->lli_write_tree);
933 init_rwsem(&lli->lli_glimpse_sem);
934 lli->lli_glimpse_time = 0;
935 INIT_LIST_HEAD(&lli->lli_agl_list);
936 lli->lli_agl_index = 0;
937 lli->lli_async_rc = 0;
939 mutex_init(&lli->lli_layout_mutex);
942 static inline int ll_bdi_register(struct backing_dev_info *bdi)
944 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
946 bdi->name = "lustre";
947 return bdi_register(bdi, NULL, "lustre-%d",
948 atomic_inc_return(&ll_bdi_num));
951 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
953 struct lustre_profile *lprof = NULL;
954 struct lustre_sb_info *lsi = s2lsi(sb);
955 struct ll_sb_info *sbi;
956 char *dt = NULL, *md = NULL;
957 char *profilenm = get_profile_name(sb);
958 struct config_llog_instance *cfg;
959 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
960 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
964 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
970 try_module_get(THIS_MODULE);
972 /* client additional sb info */
973 lsi->lsi_llsbi = sbi = ll_init_sbi();
975 module_put(THIS_MODULE);
980 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
984 err = bdi_init(&lsi->lsi_bdi);
987 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
988 #ifdef HAVE_BDI_CAP_MAP_COPY
989 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
991 lsi->lsi_bdi.capabilities = 0;
993 err = ll_bdi_register(&lsi->lsi_bdi);
997 sb->s_bdi = &lsi->lsi_bdi;
998 #ifndef HAVE_DCACHE_LOCK
999 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1000 sb->s_d_op = &ll_d_ops;
1003 /* Generate a string unique to this super, in case some joker tries
1004 to mount the same fs at two mount points.
1005 Use the address of the super itself.*/
1006 cfg->cfg_instance = sb;
1007 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1008 cfg->cfg_callback = class_config_llog_handler;
1009 /* set up client obds */
1010 err = lustre_process_log(sb, profilenm, cfg);
1012 GOTO(out_free, err);
1014 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1015 lprof = class_get_profile(profilenm);
1016 if (lprof == NULL) {
1017 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1018 " read from the MGS. Does that filesystem "
1019 "exist?\n", profilenm);
1020 GOTO(out_free, err = -EINVAL);
1022 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1023 lprof->lp_md, lprof->lp_dt);
1025 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1027 GOTO(out_free, err = -ENOMEM);
1028 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1030 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1032 GOTO(out_free, err = -ENOMEM);
1033 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1035 /* connections, registrations, sb setup */
1036 err = client_common_fill_super(sb, md, dt, mnt);
1038 GOTO(out_free, err);
1040 sbi->ll_client_common_fill_super_succeeded = 1;
1044 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1046 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1048 class_put_profile(lprof);
1051 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1052 LCONSOLE_WARN("Mounted %s\n", profilenm);
1056 } /* ll_fill_super */
1058 void ll_put_super(struct super_block *sb)
1060 struct config_llog_instance cfg, params_cfg;
1061 struct obd_device *obd;
1062 struct lustre_sb_info *lsi = s2lsi(sb);
1063 struct ll_sb_info *sbi = ll_s2sbi(sb);
1064 char *profilenm = get_profile_name(sb);
1066 int next, force = 1, rc = 0;
1069 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1071 cfg.cfg_instance = sb;
1072 lustre_end_log(sb, profilenm, &cfg);
1074 params_cfg.cfg_instance = sb;
1075 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1077 if (sbi->ll_md_exp) {
1078 obd = class_exp2obd(sbi->ll_md_exp);
1080 force = obd->obd_force;
1083 /* Wait for unstable pages to be committed to stable storage */
1085 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1086 rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
1087 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
1091 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1092 if (force == 0 && rc != -EINTR)
1093 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1096 /* We need to set force before the lov_disconnect in
1097 lustre_common_put_super, since l_d cleans up osc's as well. */
1100 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1102 obd->obd_force = force;
1106 if (sbi->ll_client_common_fill_super_succeeded) {
1107 /* Only if client_common_fill_super succeeded */
1108 client_common_put_super(sb);
1112 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1113 class_manual_cleanup(obd);
1116 if (sbi->ll_flags & LL_SBI_VERBOSE)
1117 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1120 class_del_profile(profilenm);
1122 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1123 bdi_destroy(&lsi->lsi_bdi);
1124 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1128 lsi->lsi_llsbi = NULL;
1130 lustre_common_put_super(sb);
1132 cl_env_cache_purge(~0);
1134 module_put(THIS_MODULE);
1137 } /* client_put_super */
1139 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1141 struct inode *inode = NULL;
1143 /* NOTE: we depend on atomic igrab() -bzzz */
1144 lock_res_and_lock(lock);
1145 if (lock->l_resource->lr_lvb_inode) {
1146 struct ll_inode_info * lli;
1147 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1148 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1149 inode = igrab(lock->l_resource->lr_lvb_inode);
1151 inode = lock->l_resource->lr_lvb_inode;
1152 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1153 D_WARNING, lock, "lr_lvb_inode %p is "
1154 "bogus: magic %08x",
1155 lock->l_resource->lr_lvb_inode,
1156 lli->lli_inode_magic);
1160 unlock_res_and_lock(lock);
1164 void ll_dir_clear_lsm_md(struct inode *inode)
1166 struct ll_inode_info *lli = ll_i2info(inode);
1168 LASSERT(S_ISDIR(inode->i_mode));
1170 if (lli->lli_lsm_md != NULL) {
1171 lmv_free_memmd(lli->lli_lsm_md);
1172 lli->lli_lsm_md = NULL;
1176 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1177 const struct lu_fid *fid,
1178 struct lustre_md *md)
1180 struct ll_sb_info *sbi = ll_s2sbi(sb);
1181 struct mdt_body *body = md->body;
1182 struct inode *inode;
1186 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1187 inode = iget_locked(sb, ino);
1188 if (inode == NULL) {
1189 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1190 ll_get_fsname(sb, NULL, 0), PFID(fid));
1191 RETURN(ERR_PTR(-ENOENT));
1194 if (inode->i_state & I_NEW) {
1195 struct ll_inode_info *lli = ll_i2info(inode);
1196 struct lmv_stripe_md *lsm = md->lmv;
1198 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1199 (body->mbo_mode & S_IFMT);
1200 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1203 LTIME_S(inode->i_mtime) = 0;
1204 LTIME_S(inode->i_atime) = 0;
1205 LTIME_S(inode->i_ctime) = 0;
1208 #ifdef HAVE_BACKING_DEV_INFO
1209 /* initializing backing dev info. */
1210 inode->i_mapping->backing_dev_info =
1211 &s2lsi(inode->i_sb)->lsi_bdi;
1213 inode->i_op = &ll_dir_inode_operations;
1214 inode->i_fop = &ll_dir_operations;
1215 lli->lli_fid = *fid;
1218 LASSERT(lsm != NULL);
1219 /* master object FID */
1220 lli->lli_pfid = body->mbo_fid1;
1221 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1222 lli, PFID(fid), PFID(&lli->lli_pfid));
1223 unlock_new_inode(inode);
1229 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1232 struct lmv_stripe_md *lsm = md->lmv;
1235 LASSERT(lsm != NULL);
1236 /* XXX sigh, this lsm_root initialization should be in
1237 * LMV layer, but it needs ll_iget right now, so we
1238 * put this here right now. */
1239 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1240 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1241 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1242 /* Unfortunately ll_iget will call ll_update_inode,
1243 * where the initialization of slave inode is slightly
1244 * different, so it reset lsm_md to NULL to avoid
1245 * initializing lsm for slave inode. */
1246 /* For migrating inode, master stripe and master object will
1247 * be same, so we only need assign this inode */
1248 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1249 lsm->lsm_md_oinfo[i].lmo_root = inode;
1251 lsm->lsm_md_oinfo[i].lmo_root =
1252 ll_iget_anon_dir(inode->i_sb, fid, md);
1254 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1255 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1257 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1265 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1266 const struct lmv_stripe_md *lsm_md2)
1268 return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1269 lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1270 lsm_md1->lsm_md_master_mdt_index ==
1271 lsm_md2->lsm_md_master_mdt_index &&
1272 lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1273 lsm_md1->lsm_md_layout_version ==
1274 lsm_md2->lsm_md_layout_version &&
1275 strcmp(lsm_md1->lsm_md_pool_name,
1276 lsm_md2->lsm_md_pool_name) == 0;
1279 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1281 struct ll_inode_info *lli = ll_i2info(inode);
1282 struct lmv_stripe_md *lsm = md->lmv;
1286 LASSERT(S_ISDIR(inode->i_mode));
1287 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1288 PFID(ll_inode2fid(inode)));
1290 /* no striped information from request. */
1292 if (lli->lli_lsm_md == NULL) {
1294 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1295 LMV_HASH_FLAG_MIGRATION) {
1296 /* migration is done, the temporay MIGRATE layout has
1298 CDEBUG(D_INODE, DFID" finish migration.\n",
1299 PFID(ll_inode2fid(inode)));
1300 lmv_free_memmd(lli->lli_lsm_md);
1301 lli->lli_lsm_md = NULL;
1304 /* The lustre_md from req does not include stripeEA,
1305 * see ll_md_setattr */
1310 /* set the directory layout */
1311 if (lli->lli_lsm_md == NULL) {
1312 struct cl_attr *attr;
1314 rc = ll_init_lsm_md(inode, md);
1318 /* set md->lmv to NULL, so the following free lustre_md
1319 * will not free this lsm */
1321 lli->lli_lsm_md = lsm;
1323 OBD_ALLOC_PTR(attr);
1327 /* validate the lsm */
1328 rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
1329 ll_md_blocking_ast);
1335 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1336 md->body->mbo_nlink = attr->cat_nlink;
1337 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1338 md->body->mbo_size = attr->cat_size;
1339 if (md->body->mbo_valid & OBD_MD_FLATIME)
1340 md->body->mbo_atime = attr->cat_atime;
1341 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1342 md->body->mbo_ctime = attr->cat_ctime;
1343 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1344 md->body->mbo_mtime = attr->cat_mtime;
1348 CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
1349 lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
1353 /* Compare the old and new stripe information */
1354 if (!lsm_md_eq(lli->lli_lsm_md, lsm)) {
1355 struct lmv_stripe_md *old_lsm = lli->lli_lsm_md;
1358 CERROR("%s: inode "DFID"(%p)'s lmv layout mismatch (%p)/(%p)"
1359 "magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
1360 "hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
1361 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1362 inode, lsm, old_lsm,
1363 lsm->lsm_md_magic, old_lsm->lsm_md_magic,
1364 lsm->lsm_md_stripe_count,
1365 old_lsm->lsm_md_stripe_count,
1366 lsm->lsm_md_master_mdt_index,
1367 old_lsm->lsm_md_master_mdt_index,
1368 lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type,
1369 lsm->lsm_md_layout_version,
1370 old_lsm->lsm_md_layout_version,
1371 lsm->lsm_md_pool_name,
1372 old_lsm->lsm_md_pool_name);
1374 for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) {
1375 CERROR("%s: sub FIDs in old lsm idx %d, old: "DFID"\n",
1376 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1377 PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid));
1380 for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) {
1381 CERROR("%s: sub FIDs in new lsm idx %d, new: "DFID"\n",
1382 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1383 PFID(&lsm->lsm_md_oinfo[idx].lmo_fid));
1392 void ll_clear_inode(struct inode *inode)
1394 struct ll_inode_info *lli = ll_i2info(inode);
1395 struct ll_sb_info *sbi = ll_i2sbi(inode);
1398 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1399 PFID(ll_inode2fid(inode)), inode);
1401 if (S_ISDIR(inode->i_mode)) {
1402 /* these should have been cleared in ll_file_release */
1403 LASSERT(lli->lli_opendir_key == NULL);
1404 LASSERT(lli->lli_sai == NULL);
1405 LASSERT(lli->lli_opendir_pid == 0);
1408 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1410 LASSERT(!lli->lli_open_fd_write_count);
1411 LASSERT(!lli->lli_open_fd_read_count);
1412 LASSERT(!lli->lli_open_fd_exec_count);
1414 if (lli->lli_mds_write_och)
1415 ll_md_real_close(inode, FMODE_WRITE);
1416 if (lli->lli_mds_exec_och)
1417 ll_md_real_close(inode, FMODE_EXEC);
1418 if (lli->lli_mds_read_och)
1419 ll_md_real_close(inode, FMODE_READ);
1421 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1422 OBD_FREE(lli->lli_symlink_name,
1423 strlen(lli->lli_symlink_name) + 1);
1424 lli->lli_symlink_name = NULL;
1427 ll_xattr_cache_destroy(inode);
1429 #ifdef CONFIG_FS_POSIX_ACL
1430 if (lli->lli_posix_acl) {
1431 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1432 posix_acl_release(lli->lli_posix_acl);
1433 lli->lli_posix_acl = NULL;
1436 lli->lli_inode_magic = LLI_INODE_DEAD;
1438 if (S_ISDIR(inode->i_mode))
1439 ll_dir_clear_lsm_md(inode);
1440 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1441 LASSERT(list_empty(&lli->lli_agl_list));
1444 * XXX This has to be done before lsm is freed below, because
1445 * cl_object still uses inode lsm.
1447 cl_inode_fini(inode);
1452 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1454 struct lustre_md md;
1455 struct inode *inode = dentry->d_inode;
1456 struct ll_sb_info *sbi = ll_i2sbi(inode);
1457 struct ptlrpc_request *request = NULL;
1461 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1462 LUSTRE_OPC_ANY, NULL);
1463 if (IS_ERR(op_data))
1464 RETURN(PTR_ERR(op_data));
1466 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1468 ptlrpc_req_finished(request);
1469 if (rc == -ENOENT) {
1471 /* Unlinked special device node? Or just a race?
1472 * Pretend we done everything. */
1473 if (!S_ISREG(inode->i_mode) &&
1474 !S_ISDIR(inode->i_mode)) {
1475 ia_valid = op_data->op_attr.ia_valid;
1476 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1477 rc = simple_setattr(dentry, &op_data->op_attr);
1478 op_data->op_attr.ia_valid = ia_valid;
1480 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1481 CERROR("md_setattr fails: rc = %d\n", rc);
1486 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1487 sbi->ll_md_exp, &md);
1489 ptlrpc_req_finished(request);
1493 ia_valid = op_data->op_attr.ia_valid;
1494 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1495 * cache is not cleared yet. */
1496 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1497 if (S_ISREG(inode->i_mode))
1498 mutex_lock(&inode->i_mutex);
1499 rc = simple_setattr(dentry, &op_data->op_attr);
1500 if (S_ISREG(inode->i_mode))
1501 mutex_unlock(&inode->i_mutex);
1502 op_data->op_attr.ia_valid = ia_valid;
1504 rc = ll_update_inode(inode, &md);
1505 ptlrpc_req_finished(request);
1510 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1511 * object(s) determine the file size and mtime. Otherwise, the MDS will
1512 * keep these values until such a time that objects are allocated for it.
1513 * We do the MDS operations first, as it is checking permissions for us.
1514 * We don't to the MDS RPC if there is nothing that we want to store there,
1515 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1516 * going to do an RPC anyways.
1518 * If we are doing a truncate, we will send the mtime and ctime updates
1519 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1520 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1523 * In case of HSMimport, we only set attr on MDS.
1525 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1527 struct inode *inode = dentry->d_inode;
1528 struct ll_inode_info *lli = ll_i2info(inode);
1529 struct md_op_data *op_data = NULL;
1533 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1534 "valid %x, hsm_import %d\n",
1535 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1536 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1539 if (attr->ia_valid & ATTR_SIZE) {
1540 /* Check new size against VFS/VM file size limit and rlimit */
1541 rc = inode_newsize_ok(inode, attr->ia_size);
1545 /* The maximum Lustre file size is variable, based on the
1546 * OST maximum object size and number of stripes. This
1547 * needs another check in addition to the VFS check above. */
1548 if (attr->ia_size > ll_file_maxbytes(inode)) {
1549 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1550 PFID(&lli->lli_fid), attr->ia_size,
1551 ll_file_maxbytes(inode));
1555 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1558 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1559 if (attr->ia_valid & TIMES_SET_FLAGS) {
1560 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1561 !cfs_capable(CFS_CAP_FOWNER))
1565 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1566 if (!(attr->ia_valid & ATTR_CTIME_SET) &&
1567 (attr->ia_valid & ATTR_CTIME)) {
1568 attr->ia_ctime = CURRENT_TIME;
1569 attr->ia_valid |= ATTR_CTIME_SET;
1571 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1572 (attr->ia_valid & ATTR_ATIME)) {
1573 attr->ia_atime = CURRENT_TIME;
1574 attr->ia_valid |= ATTR_ATIME_SET;
1576 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1577 (attr->ia_valid & ATTR_MTIME)) {
1578 attr->ia_mtime = CURRENT_TIME;
1579 attr->ia_valid |= ATTR_MTIME_SET;
1582 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1583 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1584 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1585 cfs_time_current_sec());
1587 if (S_ISREG(inode->i_mode)) {
1588 if (attr->ia_valid & ATTR_SIZE)
1589 inode_dio_write_done(inode);
1590 mutex_unlock(&inode->i_mutex);
1593 /* We always do an MDS RPC, even if we're only changing the size;
1594 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1596 OBD_ALLOC_PTR(op_data);
1597 if (op_data == NULL)
1598 GOTO(out, rc = -ENOMEM);
1600 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1601 /* If we are changing file size, file content is
1602 * modified, flag it. */
1603 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1604 op_data->op_bias |= MDS_DATA_MODIFIED;
1605 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1608 op_data->op_attr = *attr;
1610 rc = ll_md_setattr(dentry, op_data);
1614 if (!S_ISREG(inode->i_mode) || hsm_import)
1617 if (attr->ia_valid & (ATTR_SIZE |
1618 ATTR_ATIME | ATTR_ATIME_SET |
1619 ATTR_MTIME | ATTR_MTIME_SET |
1620 ATTR_CTIME | ATTR_CTIME_SET)) {
1621 /* For truncate and utimes sending attributes to OSTs, setting
1622 * mtime/atime to the past will be performed under PW [0:EOF]
1623 * extent lock (new_size:EOF for truncate). It may seem
1624 * excessive to send mtime/atime updates to OSTs when not
1625 * setting times to past, but it is necessary due to possible
1626 * time de-synchronization between MDT inode and OST objects */
1627 rc = cl_setattr_ost(lli->lli_clob, attr, 0);
1630 /* If the file was restored, it needs to set dirty flag.
1632 * We've already sent MDS_DATA_MODIFIED flag in
1633 * ll_md_setattr() for truncate. However, the MDT refuses to
1634 * set the HS_DIRTY flag on released files, so we have to set
1635 * it again if the file has been restored. Please check how
1636 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1638 * Please notice that if the file is not released, the previous
1639 * MDS_DATA_MODIFIED has taken effect and usually
1640 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1641 * This way we can save an RPC for common open + trunc
1643 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1644 struct hsm_state_set hss = {
1645 .hss_valid = HSS_SETMASK,
1646 .hss_setmask = HS_DIRTY,
1650 rc2 = ll_hsm_state_set(inode, &hss);
1651 /* truncate and write can happen at the same time, so that
1652 * the file can be set modified even though the file is not
1653 * restored from released state, and ll_hsm_state_set() is
1654 * not applicable for the file, and rc2 < 0 is normal in this
1657 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1658 PFID(ll_inode2fid(inode)), rc2);
1663 if (op_data != NULL)
1664 ll_finish_md_op_data(op_data);
1666 if (S_ISREG(inode->i_mode)) {
1667 mutex_lock(&inode->i_mutex);
1668 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1669 inode_dio_wait(inode);
1672 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1673 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1678 int ll_setattr(struct dentry *de, struct iattr *attr)
1680 int mode = de->d_inode->i_mode;
1682 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1683 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1684 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1686 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1687 (ATTR_SIZE|ATTR_MODE)) &&
1688 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1689 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1690 !(attr->ia_mode & S_ISGID))))
1691 attr->ia_valid |= ATTR_FORCE;
1693 if ((attr->ia_valid & ATTR_MODE) &&
1695 !(attr->ia_mode & S_ISUID) &&
1696 !(attr->ia_valid & ATTR_KILL_SUID))
1697 attr->ia_valid |= ATTR_KILL_SUID;
1699 if ((attr->ia_valid & ATTR_MODE) &&
1700 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1701 !(attr->ia_mode & S_ISGID) &&
1702 !(attr->ia_valid & ATTR_KILL_SGID))
1703 attr->ia_valid |= ATTR_KILL_SGID;
1705 return ll_setattr_raw(de, attr, false);
1708 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1709 __u64 max_age, __u32 flags)
1711 struct ll_sb_info *sbi = ll_s2sbi(sb);
1712 struct obd_statfs obd_osfs;
1716 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1718 CERROR("md_statfs fails: rc = %d\n", rc);
1722 osfs->os_type = sb->s_magic;
1724 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1725 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1727 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1728 flags |= OBD_STATFS_NODELAY;
1730 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1732 CERROR("obd_statfs fails: rc = %d\n", rc);
1736 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1737 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1740 osfs->os_bsize = obd_osfs.os_bsize;
1741 osfs->os_blocks = obd_osfs.os_blocks;
1742 osfs->os_bfree = obd_osfs.os_bfree;
1743 osfs->os_bavail = obd_osfs.os_bavail;
1745 /* If we don't have as many objects free on the OST as inodes
1746 * on the MDS, we reduce the total number of inodes to
1747 * compensate, so that the "inodes in use" number is correct.
1749 if (obd_osfs.os_ffree < osfs->os_ffree) {
1750 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1752 osfs->os_ffree = obd_osfs.os_ffree;
1757 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1759 struct super_block *sb = de->d_sb;
1760 struct obd_statfs osfs;
1761 __u64 fsid = huge_encode_dev(sb->s_dev);
1764 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1765 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1767 /* Some amount of caching on the client is allowed */
1768 rc = ll_statfs_internal(sb, &osfs,
1769 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1774 statfs_unpack(sfs, &osfs);
1776 /* We need to downshift for all 32-bit kernels, because we can't
1777 * tell if the kernel is being called via sys_statfs64() or not.
1778 * Stop before overflowing f_bsize - in which case it is better
1779 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1780 if (sizeof(long) < 8) {
1781 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1784 osfs.os_blocks >>= 1;
1785 osfs.os_bfree >>= 1;
1786 osfs.os_bavail >>= 1;
1790 sfs->f_blocks = osfs.os_blocks;
1791 sfs->f_bfree = osfs.os_bfree;
1792 sfs->f_bavail = osfs.os_bavail;
1793 sfs->f_fsid.val[0] = (__u32)fsid;
1794 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1798 void ll_inode_size_lock(struct inode *inode)
1800 struct ll_inode_info *lli;
1802 LASSERT(!S_ISDIR(inode->i_mode));
1804 lli = ll_i2info(inode);
1805 mutex_lock(&lli->lli_size_mutex);
1808 void ll_inode_size_unlock(struct inode *inode)
1810 struct ll_inode_info *lli;
1812 lli = ll_i2info(inode);
1813 mutex_unlock(&lli->lli_size_mutex);
1816 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1818 struct ll_inode_info *lli = ll_i2info(inode);
1819 struct mdt_body *body = md->body;
1820 struct ll_sb_info *sbi = ll_i2sbi(inode);
1822 if (body->mbo_valid & OBD_MD_FLEASIZE)
1823 cl_file_inode_init(inode, md);
1825 if (S_ISDIR(inode->i_mode)) {
1828 rc = ll_update_lsm_md(inode, md);
1833 #ifdef CONFIG_FS_POSIX_ACL
1834 if (body->mbo_valid & OBD_MD_FLACL) {
1835 spin_lock(&lli->lli_lock);
1836 if (lli->lli_posix_acl)
1837 posix_acl_release(lli->lli_posix_acl);
1838 lli->lli_posix_acl = md->posix_acl;
1839 spin_unlock(&lli->lli_lock);
1842 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1843 sbi->ll_flags & LL_SBI_32BIT_API);
1844 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1846 if (body->mbo_valid & OBD_MD_FLATIME) {
1847 if (body->mbo_atime > LTIME_S(inode->i_atime))
1848 LTIME_S(inode->i_atime) = body->mbo_atime;
1849 lli->lli_atime = body->mbo_atime;
1852 if (body->mbo_valid & OBD_MD_FLMTIME) {
1853 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1854 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1855 "to "LPU64"\n", inode->i_ino,
1856 LTIME_S(inode->i_mtime), body->mbo_mtime);
1857 LTIME_S(inode->i_mtime) = body->mbo_mtime;
1859 lli->lli_mtime = body->mbo_mtime;
1862 if (body->mbo_valid & OBD_MD_FLCTIME) {
1863 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
1864 LTIME_S(inode->i_ctime) = body->mbo_ctime;
1865 lli->lli_ctime = body->mbo_ctime;
1868 if (body->mbo_valid & OBD_MD_FLMODE)
1869 inode->i_mode = (inode->i_mode & S_IFMT) |
1870 (body->mbo_mode & ~S_IFMT);
1872 if (body->mbo_valid & OBD_MD_FLTYPE)
1873 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1874 (body->mbo_mode & S_IFMT);
1876 LASSERT(inode->i_mode != 0);
1877 if (S_ISREG(inode->i_mode))
1878 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
1879 LL_MAX_BLKSIZE_BITS);
1881 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1883 if (body->mbo_valid & OBD_MD_FLUID)
1884 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
1885 if (body->mbo_valid & OBD_MD_FLGID)
1886 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
1887 if (body->mbo_valid & OBD_MD_FLFLAGS)
1888 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
1889 if (body->mbo_valid & OBD_MD_FLNLINK)
1890 set_nlink(inode, body->mbo_nlink);
1891 if (body->mbo_valid & OBD_MD_FLRDEV)
1892 inode->i_rdev = old_decode_dev(body->mbo_rdev);
1894 if (body->mbo_valid & OBD_MD_FLID) {
1895 /* FID shouldn't be changed! */
1896 if (fid_is_sane(&lli->lli_fid)) {
1897 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
1898 "Trying to change FID "DFID
1899 " to the "DFID", inode "DFID"(%p)\n",
1900 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
1901 PFID(ll_inode2fid(inode)), inode);
1903 lli->lli_fid = body->mbo_fid1;
1907 LASSERT(fid_seq(&lli->lli_fid) != 0);
1909 if (body->mbo_valid & OBD_MD_FLSIZE) {
1910 i_size_write(inode, body->mbo_size);
1912 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
1913 PFID(ll_inode2fid(inode)),
1914 (unsigned long long)body->mbo_size);
1916 if (body->mbo_valid & OBD_MD_FLBLOCKS)
1917 inode->i_blocks = body->mbo_blocks;
1920 if (body->mbo_valid & OBD_MD_TSTATE) {
1921 /* Set LLIF_FILE_RESTORING if restore ongoing and
1922 * clear it when done to ensure to start again
1923 * glimpsing updated attrs
1925 if (body->mbo_t_state & MS_RESTORE)
1926 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
1928 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
1934 int ll_read_inode2(struct inode *inode, void *opaque)
1936 struct lustre_md *md = opaque;
1937 struct ll_inode_info *lli = ll_i2info(inode);
1941 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1942 PFID(&lli->lli_fid), inode);
1944 /* Core attributes from the MDS first. This is a new inode, and
1945 * the VFS doesn't zero times in the core inode so we have to do
1946 * it ourselves. They will be overwritten by either MDS or OST
1947 * attributes - we just need to make sure they aren't newer. */
1948 LTIME_S(inode->i_mtime) = 0;
1949 LTIME_S(inode->i_atime) = 0;
1950 LTIME_S(inode->i_ctime) = 0;
1952 rc = ll_update_inode(inode, md);
1956 /* OIDEBUG(inode); */
1958 #ifdef HAVE_BACKING_DEV_INFO
1959 /* initializing backing dev info. */
1960 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
1962 if (S_ISREG(inode->i_mode)) {
1963 struct ll_sb_info *sbi = ll_i2sbi(inode);
1964 inode->i_op = &ll_file_inode_operations;
1965 inode->i_fop = sbi->ll_fop;
1966 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
1968 } else if (S_ISDIR(inode->i_mode)) {
1969 inode->i_op = &ll_dir_inode_operations;
1970 inode->i_fop = &ll_dir_operations;
1972 } else if (S_ISLNK(inode->i_mode)) {
1973 inode->i_op = &ll_fast_symlink_inode_operations;
1976 inode->i_op = &ll_special_inode_operations;
1978 init_special_inode(inode, inode->i_mode,
1987 void ll_delete_inode(struct inode *inode)
1989 struct ll_inode_info *lli = ll_i2info(inode);
1992 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
1993 /* It is last chance to write out dirty pages,
1994 * otherwise we may lose data while umount */
1995 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
1997 truncate_inode_pages_final(&inode->i_data);
1999 LASSERTF(inode->i_data.nrpages == 0, "inode="DFID"(%p) nrpages=%lu, "
2000 "see https://jira.hpdd.intel.com/browse/LU-118\n",
2001 PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages);
2003 #ifdef HAVE_SBOPS_EVICT_INODE
2004 ll_clear_inode(inode);
2011 int ll_iocontrol(struct inode *inode, struct file *file,
2012 unsigned int cmd, unsigned long arg)
2014 struct ll_sb_info *sbi = ll_i2sbi(inode);
2015 struct ptlrpc_request *req = NULL;
2020 case FSFILT_IOC_GETFLAGS: {
2021 struct mdt_body *body;
2022 struct md_op_data *op_data;
2024 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2025 0, 0, LUSTRE_OPC_ANY,
2027 if (IS_ERR(op_data))
2028 RETURN(PTR_ERR(op_data));
2030 op_data->op_valid = OBD_MD_FLFLAGS;
2031 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2032 ll_finish_md_op_data(op_data);
2034 CERROR("%s: failure inode "DFID": rc = %d\n",
2035 sbi->ll_md_exp->exp_obd->obd_name,
2036 PFID(ll_inode2fid(inode)), rc);
2040 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2042 flags = body->mbo_flags;
2044 ptlrpc_req_finished(req);
2046 RETURN(put_user(flags, (int __user *)arg));
2048 case FSFILT_IOC_SETFLAGS: {
2050 struct md_op_data *op_data;
2051 struct cl_object *obj;
2053 if (get_user(flags, (int __user *)arg))
2056 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2057 LUSTRE_OPC_ANY, NULL);
2058 if (IS_ERR(op_data))
2059 RETURN(PTR_ERR(op_data));
2061 op_data->op_attr_flags = flags;
2062 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2063 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2064 ll_finish_md_op_data(op_data);
2065 ptlrpc_req_finished(req);
2069 inode->i_flags = ll_ext_to_inode_flags(flags);
2071 obj = ll_i2info(inode)->lli_clob;
2075 OBD_ALLOC_PTR(attr);
2079 attr->ia_valid = ATTR_ATTR_FLAG;
2080 rc = cl_setattr_ost(obj, attr, flags);
2092 int ll_flush_ctx(struct inode *inode)
2094 struct ll_sb_info *sbi = ll_i2sbi(inode);
2096 CDEBUG(D_SEC, "flush context for user %d\n",
2097 from_kuid(&init_user_ns, current_uid()));
2099 obd_set_info_async(NULL, sbi->ll_md_exp,
2100 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2102 obd_set_info_async(NULL, sbi->ll_dt_exp,
2103 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2108 /* umount -f client means force down, don't save state */
2109 void ll_umount_begin(struct super_block *sb)
2111 struct ll_sb_info *sbi = ll_s2sbi(sb);
2112 struct obd_device *obd;
2113 struct obd_ioctl_data *ioc_data;
2116 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2117 sb->s_count, atomic_read(&sb->s_active));
2119 obd = class_exp2obd(sbi->ll_md_exp);
2121 CERROR("Invalid MDC connection handle "LPX64"\n",
2122 sbi->ll_md_exp->exp_handle.h_cookie);
2128 obd = class_exp2obd(sbi->ll_dt_exp);
2130 CERROR("Invalid LOV connection handle "LPX64"\n",
2131 sbi->ll_dt_exp->exp_handle.h_cookie);
2137 OBD_ALLOC_PTR(ioc_data);
2139 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2140 sizeof *ioc_data, ioc_data, NULL);
2142 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2143 sizeof *ioc_data, ioc_data, NULL);
2145 OBD_FREE_PTR(ioc_data);
2148 /* Really, we'd like to wait until there are no requests outstanding,
2149 * and then continue. For now, we just invalidate the requests,
2150 * schedule() and sleep one second if needed, and hope.
2156 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2158 struct ll_sb_info *sbi = ll_s2sbi(sb);
2159 char *profilenm = get_profile_name(sb);
2163 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2164 read_only = *flags & MS_RDONLY;
2165 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2166 sizeof(KEY_READ_ONLY),
2167 KEY_READ_ONLY, sizeof(read_only),
2170 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2171 profilenm, read_only ?
2172 "read-only" : "read-write", err);
2177 sb->s_flags |= MS_RDONLY;
2179 sb->s_flags &= ~MS_RDONLY;
2181 if (sbi->ll_flags & LL_SBI_VERBOSE)
2182 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2183 read_only ? "read-only" : "read-write");
2189 * Cleanup the open handle that is cached on MDT-side.
2191 * For open case, the client side open handling thread may hit error
2192 * after the MDT grant the open. Under such case, the client should
2193 * send close RPC to the MDT as cleanup; otherwise, the open handle
2194 * on the MDT will be leaked there until the client umount or evicted.
2196 * In further, if someone unlinked the file, because the open handle
2197 * holds the reference on such file/object, then it will block the
2198 * subsequent threads that want to locate such object via FID.
2200 * \param[in] sb super block for this file-system
2201 * \param[in] open_req pointer to the original open request
2203 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2205 struct mdt_body *body;
2206 struct md_op_data *op_data;
2207 struct ptlrpc_request *close_req = NULL;
2208 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2211 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2212 OBD_ALLOC_PTR(op_data);
2213 if (op_data == NULL) {
2214 CWARN("%s: cannot allocate op_data to release open handle for "
2216 ll_get_fsname(sb, NULL, 0), PFID(&body->mbo_fid1));
2221 op_data->op_fid1 = body->mbo_fid1;
2222 op_data->op_handle = body->mbo_handle;
2223 op_data->op_mod_time = cfs_time_current_sec();
2224 md_close(exp, op_data, NULL, &close_req);
2225 ptlrpc_req_finished(close_req);
2226 ll_finish_md_op_data(op_data);
2231 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2232 struct super_block *sb, struct lookup_intent *it)
2234 struct ll_sb_info *sbi = NULL;
2235 struct lustre_md md = { NULL };
2239 LASSERT(*inode || sb);
2240 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2241 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2242 sbi->ll_md_exp, &md);
2247 rc = ll_update_inode(*inode, &md);
2251 LASSERT(sb != NULL);
2254 * At this point server returns to client's same fid as client
2255 * generated for creating. So using ->fid1 is okay here.
2257 if (!fid_is_sane(&md.body->mbo_fid1)) {
2258 CERROR("%s: Fid is insane "DFID"\n",
2259 ll_get_fsname(sb, NULL, 0),
2260 PFID(&md.body->mbo_fid1));
2261 GOTO(out, rc = -EINVAL);
2264 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2265 sbi->ll_flags & LL_SBI_32BIT_API),
2267 if (IS_ERR(*inode)) {
2268 #ifdef CONFIG_FS_POSIX_ACL
2270 posix_acl_release(md.posix_acl);
2271 md.posix_acl = NULL;
2274 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2276 CERROR("new_inode -fatal: rc %d\n", rc);
2281 /* Handling piggyback layout lock.
2282 * Layout lock can be piggybacked by getattr and open request.
2283 * The lsm can be applied to inode only if it comes with a layout lock
2284 * otherwise correct layout may be overwritten, for example:
2285 * 1. proc1: mdt returns a lsm but not granting layout
2286 * 2. layout was changed by another client
2287 * 3. proc2: refresh layout and layout lock granted
2288 * 4. proc1: to apply a stale layout */
2289 if (it != NULL && it->it_lock_mode != 0) {
2290 struct lustre_handle lockh;
2291 struct ldlm_lock *lock;
2293 lockh.cookie = it->it_lock_handle;
2294 lock = ldlm_handle2lock(&lockh);
2295 LASSERT(lock != NULL);
2296 if (ldlm_has_layout(lock)) {
2297 struct cl_object_conf conf;
2299 memset(&conf, 0, sizeof(conf));
2300 conf.coc_opc = OBJECT_CONF_SET;
2301 conf.coc_inode = *inode;
2302 conf.coc_lock = lock;
2303 conf.u.coc_layout = md.layout;
2304 (void)ll_layout_conf(*inode, &conf);
2306 LDLM_LOCK_PUT(lock);
2312 md_free_lustre_md(sbi->ll_md_exp, &md);
2315 if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
2316 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2321 int ll_obd_statfs(struct inode *inode, void __user *arg)
2323 struct ll_sb_info *sbi = NULL;
2324 struct obd_export *exp;
2326 struct obd_ioctl_data *data = NULL;
2330 if (!inode || !(sbi = ll_i2sbi(inode)))
2331 GOTO(out_statfs, rc = -EINVAL);
2333 rc = obd_ioctl_getdata(&buf, &len, arg);
2335 GOTO(out_statfs, rc);
2338 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2339 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2340 GOTO(out_statfs, rc = -EINVAL);
2342 if (data->ioc_inllen1 != sizeof(__u32) ||
2343 data->ioc_inllen2 != sizeof(__u32) ||
2344 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2345 data->ioc_plen2 != sizeof(struct obd_uuid))
2346 GOTO(out_statfs, rc = -EINVAL);
2348 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2349 if (type & LL_STATFS_LMV)
2350 exp = sbi->ll_md_exp;
2351 else if (type & LL_STATFS_LOV)
2352 exp = sbi->ll_dt_exp;
2354 GOTO(out_statfs, rc = -ENODEV);
2356 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2358 GOTO(out_statfs, rc);
2361 obd_ioctl_freedata(buf, len);
2365 int ll_process_config(struct lustre_cfg *lcfg)
2367 struct super_block *sb;
2372 /* The instance name contains the sb: lustre-client-aacfe000 */
2373 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2374 if (!ptr || !*(++ptr))
2376 if (sscanf(ptr, "%lx", &x) != 1)
2378 sb = (struct super_block *)x;
2379 /* This better be a real Lustre superblock! */
2380 LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2382 /* Note we have not called client_common_fill_super yet, so
2383 proc fns must be able to handle that! */
2384 rc = class_process_proc_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2391 /* this function prepares md_op_data hint for passing it down to MD stack. */
2392 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2393 struct inode *i1, struct inode *i2,
2394 const char *name, size_t namelen,
2395 __u32 mode, __u32 opc, void *data)
2397 LASSERT(i1 != NULL);
2400 /* Do not reuse namelen for something else. */
2402 return ERR_PTR(-EINVAL);
2404 if (namelen > ll_i2sbi(i1)->ll_namelen)
2405 return ERR_PTR(-ENAMETOOLONG);
2407 if (!lu_name_is_valid_2(name, namelen))
2408 return ERR_PTR(-EINVAL);
2411 if (op_data == NULL)
2412 OBD_ALLOC_PTR(op_data);
2414 if (op_data == NULL)
2415 return ERR_PTR(-ENOMEM);
2417 ll_i2gids(op_data->op_suppgids, i1, i2);
2418 op_data->op_fid1 = *ll_inode2fid(i1);
2419 op_data->op_default_stripe_offset = -1;
2420 if (S_ISDIR(i1->i_mode)) {
2421 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2422 if (opc == LUSTRE_OPC_MKDIR)
2423 op_data->op_default_stripe_offset =
2424 ll_i2info(i1)->lli_def_stripe_offset;
2428 op_data->op_fid2 = *ll_inode2fid(i2);
2429 if (S_ISDIR(i2->i_mode))
2430 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2432 fid_zero(&op_data->op_fid2);
2435 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2436 op_data->op_cli_flags |= CLI_HASH64;
2438 if (ll_need_32bit_api(ll_i2sbi(i1)))
2439 op_data->op_cli_flags |= CLI_API32;
2441 op_data->op_name = name;
2442 op_data->op_namelen = namelen;
2443 op_data->op_mode = mode;
2444 op_data->op_mod_time = cfs_time_current_sec();
2445 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2446 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2447 op_data->op_cap = cfs_curproc_cap_pack();
2448 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2449 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2450 op_data->op_bias |= MDS_CREATE_VOLATILE;
2452 op_data->op_mds = 0;
2454 op_data->op_data = data;
2459 void ll_finish_md_op_data(struct md_op_data *op_data)
2461 OBD_FREE_PTR(op_data);
2464 #ifdef HAVE_SUPEROPS_USE_DENTRY
2465 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2467 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2470 struct ll_sb_info *sbi;
2472 #ifdef HAVE_SUPEROPS_USE_DENTRY
2473 LASSERT((seq != NULL) && (dentry != NULL));
2474 sbi = ll_s2sbi(dentry->d_sb);
2476 LASSERT((seq != NULL) && (vfs != NULL));
2477 sbi = ll_s2sbi(vfs->mnt_sb);
2480 if (sbi->ll_flags & LL_SBI_NOLCK)
2481 seq_puts(seq, ",nolock");
2483 if (sbi->ll_flags & LL_SBI_FLOCK)
2484 seq_puts(seq, ",flock");
2486 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2487 seq_puts(seq, ",localflock");
2489 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2490 seq_puts(seq, ",user_xattr");
2492 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2493 seq_puts(seq, ",lazystatfs");
2495 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2496 seq_puts(seq, ",user_fid2path");
2498 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2499 seq_puts(seq, ",always_ping");
2505 * Get obd name by cmd, and copy out to user space
2507 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2509 struct ll_sb_info *sbi = ll_i2sbi(inode);
2510 struct obd_device *obd;
2513 if (cmd == OBD_IOC_GETDTNAME)
2514 obd = class_exp2obd(sbi->ll_dt_exp);
2515 else if (cmd == OBD_IOC_GETMDNAME)
2516 obd = class_exp2obd(sbi->ll_md_exp);
2523 if (copy_to_user((void __user *)arg, obd->obd_name,
2524 strlen(obd->obd_name) + 1))
2531 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2532 * fsname will be returned in this buffer; otherwise, a static buffer will be
2533 * used to store the fsname and returned to caller.
2535 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2537 static char fsname_static[MTI_NAME_MAXLEN];
2538 struct lustre_sb_info *lsi = s2lsi(sb);
2543 /* this means the caller wants to use static buffer
2544 * and it doesn't care about race. Usually this is
2545 * in error reporting path */
2546 buf = fsname_static;
2547 buflen = sizeof(fsname_static);
2550 len = strlen(lsi->lsi_lmd->lmd_profile);
2551 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2552 if (ptr && (strcmp(ptr, "-client") == 0))
2555 if (unlikely(len >= buflen))
2557 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2563 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2570 p.mnt = current->fs->root.mnt;
2572 path = d_path(&p, buf, bufsize);
2577 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2579 char *buf, *path = NULL;
2580 struct dentry *dentry = NULL;
2581 struct inode *inode = page->mapping->host;
2583 /* this can be called inside spin lock so use GFP_ATOMIC. */
2584 buf = (char *)__get_free_page(GFP_ATOMIC);
2586 dentry = d_find_alias(page->mapping->host);
2588 path = ll_d_path(dentry, buf, PAGE_SIZE);
2592 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2593 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2594 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2595 PFID(ll_inode2fid(inode)),
2596 (path && !IS_ERR(path)) ? path : "", ioret);
2602 free_page((unsigned long)buf);
2605 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2606 struct lov_user_md **kbuf)
2608 struct lov_user_md lum;
2612 if (copy_from_user(&lum, md, sizeof(lum)))
2615 lum_size = ll_lov_user_md_size(&lum);
2619 OBD_ALLOC(*kbuf, lum_size);
2623 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2624 OBD_FREE(*kbuf, lum_size);
2632 * Compute llite root squash state after a change of root squash
2633 * configuration setting or add/remove of a lnet nid
2635 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2637 struct root_squash_info *squash = &sbi->ll_squash;
2640 lnet_process_id_t id;
2642 /* Update norootsquash flag */
2643 down_write(&squash->rsi_sem);
2644 if (list_empty(&squash->rsi_nosquash_nids))
2645 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2647 /* Do not apply root squash as soon as one of our NIDs is
2648 * in the nosquash_nids list */
2651 while (LNetGetId(i++, &id) != -ENOENT) {
2652 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2654 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2660 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2662 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2664 up_write(&squash->rsi_sem);
2668 * Parse linkea content to extract information about a given hardlink
2670 * \param[in] ldata - Initialized linkea data
2671 * \param[in] linkno - Link identifier
2672 * \param[out] parent_fid - The entry's parent FID
2673 * \param[out] ln - Entry name destination buffer
2675 * \retval 0 on success
2676 * \retval Appropriate negative error code on failure
2678 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2679 struct lu_fid *parent_fid, struct lu_name *ln)
2685 rc = linkea_init(ldata);
2689 if (linkno >= ldata->ld_leh->leh_reccount)
2690 /* beyond last link */
2693 linkea_first_entry(ldata);
2694 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2695 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2700 linkea_next_entry(ldata);
2710 * Get parent FID and name of an identified link. Operation is performed for
2711 * a given link number, letting the caller iterate over linkno to list one or
2712 * all links of an entry.
2714 * \param[in] file - File descriptor against which to perform the operation
2715 * \param[in,out] arg - User-filled structure containing the linkno to operate
2716 * on and the available size. It is eventually filled with
2717 * the requested information or left untouched on error
2719 * \retval - 0 on success
2720 * \retval - Appropriate negative error code on failure
2722 int ll_getparent(struct file *file, struct getparent __user *arg)
2724 struct dentry *dentry = file_dentry(file);
2725 struct inode *inode = file_inode(file);
2726 struct linkea_data *ldata;
2727 struct lu_buf buf = LU_BUF_NULL;
2729 struct lu_fid parent_fid;
2736 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2737 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2740 if (get_user(name_size, &arg->gp_name_size))
2743 if (get_user(linkno, &arg->gp_linkno))
2746 if (name_size > PATH_MAX)
2749 OBD_ALLOC(ldata, sizeof(*ldata));
2753 rc = linkea_data_new(ldata, &buf);
2755 GOTO(ldata_free, rc);
2757 rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
2761 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
2765 if (ln.ln_namelen >= name_size)
2766 GOTO(lb_free, rc = -EOVERFLOW);
2768 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
2769 GOTO(lb_free, rc = -EFAULT);
2771 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
2772 GOTO(lb_free, rc = -EFAULT);
2774 if (put_user('\0', arg->gp_name + ln.ln_namelen))
2775 GOTO(lb_free, rc = -EFAULT);
2780 OBD_FREE(ldata, sizeof(*ldata));