lustre/llite/llite_lib.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Lustre Light Super operations
   5  *
   6  *  Copyright (c) 2002, 2003 Cluster File Systems, Inc.
   7  *
   8  *   This file is part of Lustre, http://www.lustre.org.
   9  *
  10  *   Lustre is free software; you can redistribute it and/or
  11  *   modify it under the terms of version 2 of the GNU General Public
  12  *   License as published by the Free Software Foundation.
  13  *
  14  *   Lustre is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with Lustre; if not, write to the Free Software
  21  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #define DEBUG_SUBSYSTEM S_LLITE
  25
  26 #include <linux/module.h>
  27 #include <linux/types.h>
  28 #include <linux/random.h>
  29 #include <linux/version.h>
  30
  31 #include <linux/lustre_lite.h>
  32 #include <linux/lustre_ha.h>
  33 #include <linux/lustre_dlm.h>
  34 #include <linux/lprocfs_status.h>
  35 #include <linux/lustre_acl.h>
  36 #include "llite_internal.h"
  37
  38 kmem_cache_t *ll_file_data_slab;
  39 kmem_cache_t *ll_intent_slab;
  40
  41 extern struct address_space_operations ll_aops;
  42 extern struct address_space_operations ll_dir_aops;
  43
  44 #ifndef log2
  45 #define log2(n) ffz(~(n))
  46 #endif
  47
  48 struct ll_sb_info *lustre_init_sbi(struct super_block *sb)
  49 {
  50         struct ll_sb_info *sbi = NULL;
  51         class_uuid_t uuid;
  52         ENTRY;
  53
  54         OBD_ALLOC(sbi, sizeof(*sbi));
  55         if (!sbi)
  56                 RETURN(NULL);
  57
  58         spin_lock_init(&sbi->ll_lock);
  59         INIT_LIST_HEAD(&sbi->ll_pglist);
  60         sbi->ll_pglist_gen = 0;
  61         if (num_physpages < SBI_DEFAULT_RA_MAX / 4)
  62                 sbi->ll_ra_info.ra_max_pages = num_physpages / 4;
  63         else
  64                 sbi->ll_ra_info.ra_max_pages = SBI_DEFAULT_RA_MAX;
  65         INIT_LIST_HEAD(&sbi->ll_conn_chain);
  66         INIT_HLIST_HEAD(&sbi->ll_orphan_dentry_list);
  67         INIT_LIST_HEAD(&sbi->ll_mnt_list);
  68
  69         sema_init(&sbi->ll_gns_sem, 1);
  70         spin_lock_init(&sbi->ll_gns_lock);
  71         INIT_LIST_HEAD(&sbi->ll_gns_sbi_head);
  72         init_waitqueue_head(&sbi->ll_gns_waitq);
  73         init_completion(&sbi->ll_gns_mount_finished);
  74
  75         /* this later may be reset via /proc/fs/... */
  76         memcpy(sbi->ll_gns_oname, ".mntinfo", strlen(".mntinfo"));
  77         sbi->ll_gns_oname[strlen(sbi->ll_gns_oname)] = '\0';
  78
  79         /* this later may be reset via /proc/fs/... */
  80         memcpy(sbi->ll_gns_upcall, "/usr/sbin/gns_upcall",
  81                strlen("/usr/sbin/gns_upcall"));
  82         sbi->ll_gns_upcall[strlen(sbi->ll_gns_upcall)] = '\0';
  83
  84         /* default values, may be changed via /proc/fs/... */
  85         sbi->ll_gns_state = LL_GNS_IDLE;
  86         sbi->ll_gns_pending_dentry = NULL;
  87         atomic_set(&sbi->ll_gns_enabled, 1);
  88         sbi->ll_gns_tick = GNS_TICK_TIMEOUT;
  89         sbi->ll_gns_timeout = GNS_MOUNT_TIMEOUT;
  90
  91         sbi->ll_gns_timer.data = (unsigned long)sbi;
  92         sbi->ll_gns_timer.function = ll_gns_timer_callback;
  93         init_timer(&sbi->ll_gns_timer);
  94
  95         ll_set_sbi(sb, sbi);
  96
  97         generate_random_uuid(uuid);
  98         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
  99         RETURN(sbi);
 100 }
 101
 102 void lustre_free_sbi(struct super_block *sb)
 103 {
 104         struct ll_sb_info *sbi = ll_s2sbi(sb);
 105         ENTRY;
 106
 107         if (sbi != NULL) {
 108                 list_del(&sbi->ll_gns_sbi_head);
 109                 del_timer(&sbi->ll_gns_timer);
 110                 OBD_FREE(sbi, sizeof(*sbi));
 111         }
 112         ll_set_sbi(sb, NULL);
 113         EXIT;
 114 }
 115
 116 int lustre_init_dt_desc(struct ll_sb_info *sbi)
 117 {
 118         __u32 valsize;
 119         int rc = 0;
 120         ENTRY;
 121
 122         valsize = sizeof(sbi->ll_dt_desc);
 123         memset(&sbi->ll_dt_desc, 0, sizeof(sbi->ll_dt_desc));
 124         rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 125                           "lovdesc", &valsize, &sbi->ll_dt_desc);
 126         RETURN(rc);
 127 }
 128
 129 extern struct dentry_operations ll_d_ops;
 130
 131 int lustre_common_fill_super(struct super_block *sb, char *lmv, char *lov,
 132                              int async,  char *mds_security,  char *oss_security,
 133                              __u32 *nllu, __u64 *remote)
 134 {
 135         struct ll_sb_info *sbi = ll_s2sbi(sb);
 136         struct ptlrpc_request *request = NULL;
 137         struct lustre_handle dt_conn = {0, };
 138         struct lustre_handle md_conn = {0, };
 139         struct obd_connect_data *data;
 140         struct inode *root = NULL;
 141         struct obd_device *obd;
 142         struct obd_statfs osfs;
 143         struct lustre_md md;
 144         kdev_t devno;
 145         int err;
 146         __u32 valsize;
 147         ENTRY;
 148
 149         obd = class_name2obd(lmv);
 150         if (!obd) {
 151                 CERROR("MDC %s: not setup or attached\n", lmv);
 152                 RETURN(-EINVAL);
 153         }
 154         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 155                      sizeof(async), &async);
 156
 157         if ((*remote & (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) ==
 158             (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) {
 159                 CERROR("wrong remote flag "LPX64"\n", *remote);
 160                 RETURN(-EINVAL);
 161         }
 162
 163         OBD_ALLOC(data, sizeof(*data));
 164         if (!data)
 165                 RETURN(-ENOMEM);
 166
 167         data->ocd_connect_flags |= *remote & (OBD_CONNECT_LOCAL |
 168                                               OBD_CONNECT_REMOTE);
 169         memcpy(data->ocd_nllu, nllu, sizeof(data->ocd_nllu));
 170
 171         if (mds_security == NULL)
 172                 mds_security = "null";
 173
 174         err = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 175                            strlen(mds_security), mds_security);
 176         if (err) {
 177                 CERROR("LMV %s: failed to set security %s, err %d\n",
 178                         lmv, mds_security, err);
 179                 OBD_FREE(data, sizeof(*data));
 180                 RETURN(err);
 181         }
 182
 183         if (proc_lustre_fs_root) {
 184                 err = lprocfs_register_mountpoint(proc_lustre_fs_root,
 185                                                   sb, lov, lmv);
 186                 if (err < 0)
 187                         CERROR("could not register mount in /proc/lustre");
 188         }
 189
 190         err = obd_connect(&md_conn, obd, &sbi->ll_sb_uuid, data,
 191                           OBD_OPT_REAL_CLIENT);
 192         if (err == -EBUSY) {
 193                 CERROR("An MDS (lmv %s) is performing recovery, of which this"
 194                        " client is not a part.  Please wait for recovery to "
 195                        "complete, abort, or time out.\n", lmv);
 196                 GOTO(out, err);
 197         } else if (err) {
 198                 CERROR("cannot connect to %s: rc = %d\n", lmv, err);
 199                 GOTO(out, err);
 200         }
 201         sbi->ll_md_exp = class_conn2export(&md_conn);
 202         err = obd_statfs(obd, &osfs, jiffies - HZ);
 203         if (err)
 204                 GOTO(out_lmv, err);
 205
 206         if (!osfs.os_bsize) {
 207                 CERROR("Invalid block size is detected.");
 208                 GOTO(out_lmv, err);
 209         }
 210
 211         sb->s_magic = LL_SUPER_MAGIC;
 212         sb->s_blocksize = osfs.os_bsize;
 213         sb->s_blocksize_bits = log2(osfs.os_bsize);
 214         sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
 215
 216         devno = get_uuid2int((char *)sbi->ll_md_exp->exp_obd->obd_uuid.uuid,
 217                              strlen((char *)sbi->ll_md_exp->exp_obd->obd_uuid.uuid));
 218
 219         sb->s_dev = devno;
 220
 221         /* after statfs, we are supposed to have connected to MDSs,
 222          * so it's ok to check remote flag returned.
 223          */
 224         valsize = sizeof(&sbi->ll_remote);
 225         err = obd_get_info(sbi->ll_md_exp, strlen("remote_flag"), "remote_flag",
 226                            &valsize, &sbi->ll_remote);
 227         if (err) {
 228                 CERROR("fail to obtain remote flag\n");
 229                 GOTO(out, err);
 230         }
 231
 232         obd = class_name2obd(lov);
 233         if (!obd) {
 234                 CERROR("OSC %s: not setup or attached\n", lov);
 235                 GOTO(out_lmv, err);
 236         }
 237         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 238                      sizeof(async), &async);
 239
 240        if (oss_security == NULL)
 241                 oss_security = "null";
 242
 243         err = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 244                            strlen(oss_security), oss_security);
 245         if (err) {
 246                 CERROR("LOV %s: failed to set security %s, err %d\n",
 247                         lov, oss_security, err);
 248                 OBD_FREE(data, sizeof(*data));
 249                 RETURN(err);
 250         }
 251
 252         err = obd_connect(&dt_conn, obd, &sbi->ll_sb_uuid, data,
 253                           OBD_OPT_REAL_CLIENT);
 254         if (err == -EBUSY) {
 255                 CERROR("An OST (lov %s) is performing recovery, of which this"
 256                        " client is not a part.  Please wait for recovery to "
 257                        "complete, abort, or time out.\n", lov);
 258                 GOTO(out, err);
 259         } else if (err) {
 260                 CERROR("cannot connect to %s: rc = %d\n", lov, err);
 261                 GOTO(out_lmv, err);
 262         }
 263         sbi->ll_dt_exp = class_conn2export(&dt_conn);
 264
 265         err = lustre_init_dt_desc(sbi);
 266         if (err == 0) {
 267                 int mdsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
 268                 obd_init_ea_size(sbi->ll_md_exp, mdsize,
 269                                  sbi->ll_dt_desc.ld_tgt_count *
 270                                  sizeof(struct llog_cookie));
 271         }
 272
 273         err = md_getstatus(sbi->ll_md_exp, &sbi->ll_rootid);
 274         if (err) {
 275                 CERROR("cannot mds_connect: rc = %d\n", err);
 276                 GOTO(out_lov, err);
 277         }
 278         CDEBUG(D_SUPER, "rootid "DLID4"\n", OLID4(&sbi->ll_rootid));
 279
 280         sb->s_op = &lustre_super_operations;
 281
 282         /* make root inode */
 283         err = md_getattr(sbi->ll_md_exp, &sbi->ll_rootid,
 284                          (OBD_MD_FLNOTOBD | OBD_MD_FLBLOCKS | OBD_MD_FID),
 285                          NULL, 0, 0, &request);
 286         if (err) {
 287                 CERROR("md_getattr failed for root: rc = %d\n", err);
 288                 GOTO(out_lov, err);
 289         }
 290
 291         err = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
 292                                 sbi->ll_dt_exp, &md);
 293         if (err) {
 294                 CERROR("failed to understand root inode md: rc = %d\n", err);
 295                 ptlrpc_req_finished(request);
 296                 GOTO(out_lov, err);
 297         }
 298
 299         LASSERT(id_ino(&sbi->ll_rootid) != 0);
 300         root = ll_iget(sb, id_ino(&sbi->ll_rootid), &md);
 301
 302         ptlrpc_req_finished(request);
 303
 304         if (root == NULL || is_bad_inode(root)) {
 305                 if (md.lsm != NULL)
 306                     obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
 307                 if (md.mea != NULL)
 308                     obd_free_memmd(sbi->ll_md_exp,
 309                                    (struct lov_stripe_md**)&md.mea);
 310                 CERROR("lustre_lite: bad iget4 for root\n");
 311                 GOTO(out_root, err = -EBADF);
 312         }
 313
 314         err = ll_close_thread_start(&sbi->ll_lcq);
 315         if (err) {
 316                 CERROR("cannot start close thread: rc %d\n", err);
 317                 GOTO(out_root, err);
 318         }
 319
 320         ll_gns_add_timer(sbi);
 321
 322         /* making vm readahead 0 for 2.4.x. In the case of 2.6.x,
 323            backing dev info assigned to inode mapping is used for
 324            determining maximal readahead. */
 325 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) && \
 326     !defined(KERNEL_HAS_AS_MAX_READAHEAD)
 327         /* bug 2805 - set VM readahead to zero */
 328         vm_max_readahead = vm_min_readahead = 0;
 329 #endif
 330
 331         sb->s_root = d_alloc_root(root);
 332         sb->s_root->d_op = &ll_d_ops;
 333
 334         sb->s_flags |= MS_POSIXACL;
 335 #ifdef S_PDIROPS
 336         CWARN("Enabling PDIROPS\n");
 337         sb->s_flags |= S_PDIROPS;
 338 #endif
 339
 340         if (data != NULL)
 341                 OBD_FREE(data, sizeof(*data));
 342         RETURN(err);
 343 out_root:
 344         if (root)
 345                 iput(root);
 346 out_lov:
 347         obd_disconnect(sbi->ll_dt_exp, 0);
 348 out_lmv:
 349         obd_disconnect(sbi->ll_md_exp, 0);
 350 out:
 351         if (data != NULL)
 352                 OBD_FREE(data, sizeof(*data));
 353         lprocfs_unregister_mountpoint(sbi);
 354         return err;
 355 }
 356
 357 void lustre_common_put_super(struct super_block *sb)
 358 {
 359         struct ll_sb_info *sbi = ll_s2sbi(sb);
 360         struct hlist_node *tmp, *next;
 361         ENTRY;
 362
 363         ll_gns_del_timer(sbi);
 364         ll_close_thread_shutdown(sbi->ll_lcq);
 365
 366         list_del(&sbi->ll_conn_chain);
 367         obd_disconnect(sbi->ll_dt_exp, 0);
 368
 369         lprocfs_unregister_mountpoint(sbi);
 370         if (sbi->ll_proc_root) {
 371                 lprocfs_remove(sbi->ll_proc_root);
 372                 sbi->ll_proc_root = NULL;
 373         }
 374
 375         obd_disconnect(sbi->ll_md_exp, 0);
 376
 377         // We do this to get rid of orphaned dentries. That is not really trw.
 378         hlist_for_each_safe(tmp, next, &sbi->ll_orphan_dentry_list) {
 379                 struct dentry *dentry = hlist_entry(tmp, struct dentry, d_hash);
 380                 CWARN("orphan dentry %.*s (%p->%p) at unmount\n",
 381                       dentry->d_name.len, dentry->d_name.name, dentry, next);
 382                 shrink_dcache_parent(dentry);
 383         }
 384         EXIT;
 385 }
 386
 387 char *ll_read_opt(const char *opt, char *data)
 388 {
 389         char *value;
 390         char *retval;
 391         ENTRY;
 392
 393         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 394         if (strncmp(opt, data, strlen(opt)))
 395                 RETURN(NULL);
 396         if ((value = strchr(data, '=')) == NULL)
 397                 RETURN(NULL);
 398
 399         value++;
 400         OBD_ALLOC(retval, strlen(value) + 1);
 401         if (!retval) {
 402                 CERROR("out of memory!\n");
 403                 RETURN(NULL);
 404         }
 405
 406         memcpy(retval, value, strlen(value)+1);
 407         CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
 408         RETURN(retval);
 409 }
 410
 411 int ll_set_opt(const char *opt, char *data, int fl)
 412 {
 413         ENTRY;
 414
 415         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 416         if (strncmp(opt, data, strlen(opt)))
 417                 RETURN(0);
 418         else
 419                 RETURN(fl);
 420 }
 421
 422 void ll_options(char *options, char **lov, char **lmv, char **mds_sec,
 423                 char **oss_sec, int *async, int *flags)
 424 {
 425         char *this_char;
 426 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 427         char *opt_ptr = options;
 428 #endif
 429         ENTRY;
 430
 431         if (!options) {
 432                 EXIT;
 433                 return;
 434         }
 435
 436         *async = 0;
 437 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 438         for (this_char = strtok (options, ",");
 439              this_char != NULL;
 440              this_char = strtok (NULL, ",")) {
 441 #else
 442         while ((this_char = strsep (&opt_ptr, ",")) != NULL) {
 443 #endif
 444                 CDEBUG(D_SUPER, "this_char %s\n", this_char);
 445                 if (!*lov && (*lov = ll_read_opt("osc", this_char)))
 446                         continue;
 447                 if (!*lmv && (*lmv = ll_read_opt("mdc", this_char)))
 448                         continue;
 449                 if (!strncmp(this_char, "lasync", strlen("lasync"))) {
 450                         *async = 1;
 451                         continue;
 452                 }
 453                 if (!*mds_sec && (*mds_sec = ll_read_opt("mds_sec", this_char)))
 454                         continue;
 455                 if (!*oss_sec && (*oss_sec = ll_read_opt("oss_sec", this_char)))
 456                         continue;
 457                 if (!(*flags & LL_SBI_NOLCK) &&
 458                     ((*flags) = (*flags) |
 459                                 ll_set_opt("nolock", this_char,
 460                                            LL_SBI_NOLCK)))
 461                         continue;
 462         }
 463
 464         EXIT;
 465 }
 466
 467 void ll_lli_init(struct ll_inode_info *lli)
 468 {
 469         sema_init(&lli->lli_open_sem, 1);
 470         sema_init(&lli->lli_size_sem, 1);
 471         lli->lli_flags = 0;
 472         lli->lli_size_pid = 0;
 473         lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
 474         spin_lock_init(&lli->lli_lock);
 475         INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
 476         lli->lli_inode_magic = LLI_INODE_MAGIC;
 477         memset(&lli->lli_id, 0, sizeof(lli->lli_id));
 478         sema_init(&lli->lli_och_sem, 1);
 479         lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
 480         lli->lli_mds_exec_och = NULL;
 481         lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
 482         lli->lli_open_fd_exec_count = 0;
 483 }
 484
 485 int ll_fill_super(struct super_block *sb, void *data, int silent)
 486 {
 487         struct ll_sb_info *sbi;
 488         char *lov = NULL;
 489         char *lmv = NULL;
 490         char *mds_sec = NULL;
 491         char *oss_sec = NULL;
 492         int async, err;
 493         __u32 nllu[2] = { NOBODY_UID, NOBODY_GID };
 494         __u64 remote_flag = 0;
 495         ENTRY;
 496
 497         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 498
 499         sbi = lustre_init_sbi(sb);
 500         if (!sbi)
 501                 RETURN(-ENOMEM);
 502
 503         sbi->ll_flags |= LL_SBI_READAHEAD;
 504         ll_options(data, &lov, &lmv, &mds_sec, &oss_sec,
 505                    &async, &sbi->ll_flags);
 506
 507         if (!lov) {
 508                 CERROR("no osc\n");
 509                 GOTO(out, err = -EINVAL);
 510         }
 511
 512         if (!lmv) {
 513                 CERROR("no mdc\n");
 514                 GOTO(out, err = -EINVAL);
 515         }
 516
 517         err = lustre_common_fill_super(sb, lmv, lov, async, mds_sec, oss_sec,
 518                                        nllu, &remote_flag);
 519         EXIT;
 520 out:
 521         if (err)
 522                 lustre_free_sbi(sb);
 523
 524         if (lmv)
 525                 OBD_FREE(lmv, strlen(lmv) + 1);
 526         if (lov)
 527                 OBD_FREE(lov, strlen(lov) + 1);
 528         if (mds_sec)
 529                 OBD_FREE(mds_sec, strlen(mds_sec) + 1);
 530         if (oss_sec)
 531                 OBD_FREE(oss_sec, strlen(oss_sec) + 1);
 532
 533         return err;
 534 } /* ll_read_super */
 535
 536 static int lustre_process_log(struct lustre_mount_data *lmd, char *profile,
 537                               struct config_llog_instance *cfg, int allow_recov)
 538 {
 539         struct lustre_cfg *lcfg = NULL;
 540         struct lustre_cfg_bufs bufs;
 541         struct portals_cfg pcfg;
 542         char *peer = "MDS_PEER_UUID";
 543         struct obd_device *obd;
 544         struct lustre_handle md_conn = {0, };
 545         struct obd_export *exp;
 546         char *name = "mdc_dev";
 547         class_uuid_t uuid;
 548         struct obd_uuid lmv_uuid;
 549         struct llog_ctxt *ctxt;
 550         int rc = 0, err = 0;
 551         ENTRY;
 552
 553         if (lmd_bad_magic(lmd))
 554                 RETURN(-EINVAL);
 555
 556         generate_random_uuid(uuid);
 557         class_uuid_unparse(uuid, &lmv_uuid);
 558
 559         if (lmd->lmd_local_nid) {
 560                 PCFG_INIT(pcfg, NAL_CMD_REGISTER_MYNID);
 561                 pcfg.pcfg_nal = lmd->lmd_nal;
 562                 pcfg.pcfg_nid = lmd->lmd_local_nid;
 563                 rc = libcfs_nal_cmd(&pcfg);
 564                 if (rc < 0)
 565                         GOTO(out, rc);
 566         }
 567
 568         if (lmd->lmd_nal == SOCKNAL ||
 569             lmd->lmd_nal == OPENIBNAL ||
 570             lmd->lmd_nal == IIBNAL ||
 571             lmd->lmd_nal == VIBNAL ||
 572             lmd->lmd_nal == RANAL) {
 573                 PCFG_INIT(pcfg, NAL_CMD_ADD_PEER);
 574                 pcfg.pcfg_nal     = lmd->lmd_nal;
 575                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 576                 pcfg.pcfg_id      = lmd->lmd_server_ipaddr;
 577                 pcfg.pcfg_misc    = lmd->lmd_port;
 578                 rc = libcfs_nal_cmd(&pcfg);
 579                 if (rc < 0)
 580                         GOTO(out, rc);
 581         }
 582         lustre_cfg_bufs_reset(&bufs, name);
 583         lustre_cfg_bufs_set_string(&bufs, 1, peer);
 584
 585         lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
 586         lcfg->lcfg_nal = lmd->lmd_nal;
 587         lcfg->lcfg_nid = lmd->lmd_server_nid;
 588         LASSERT(lcfg->lcfg_nal);
 589         LASSERT(lcfg->lcfg_nid);
 590         err = class_process_config(lcfg);
 591         lustre_cfg_free(lcfg);
 592         if (err < 0)
 593                 GOTO(out_del_conn, err);
 594
 595         lustre_cfg_bufs_reset(&bufs, name);
 596         lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MDC_NAME);
 597         lustre_cfg_bufs_set_string(&bufs, 2, (char *)lmv_uuid.uuid);
 598
 599         lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
 600         err = class_process_config(lcfg);
 601         lustre_cfg_free(lcfg);
 602         if (err < 0)
 603                 GOTO(out_del_uuid, err);
 604
 605         lustre_cfg_bufs_reset(&bufs, name);
 606         lustre_cfg_bufs_set_string(&bufs, 1, lmd->lmd_mds);
 607         lustre_cfg_bufs_set_string(&bufs, 2, peer);
 608
 609         lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
 610         err = class_process_config(lcfg);
 611         lustre_cfg_free(lcfg);
 612         if (err < 0)
 613                 GOTO(out_detach, err);
 614
 615         obd = class_name2obd(name);
 616         if (obd == NULL)
 617                 GOTO(out_cleanup, rc = -EINVAL);
 618
 619         rc = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 620                           strlen(lmd->lmd_mds_security), lmd->lmd_mds_security);
 621         if (rc)
 622                 GOTO(out_cleanup, rc);
 623
 624         /* Disable initial recovery on this import */
 625         rc = obd_set_info(obd->obd_self_export,
 626                           strlen("initial_recov"), "initial_recov",
 627                           sizeof(allow_recov), &allow_recov);
 628         if (rc)
 629                 GOTO(out_cleanup, rc);
 630
 631         rc = obd_connect(&md_conn, obd, &lmv_uuid, NULL, 0);
 632         if (rc) {
 633                 CERROR("cannot connect to %s: rc = %d\n", lmd->lmd_mds, rc);
 634                 GOTO(out_cleanup, rc);
 635         }
 636
 637         exp = class_conn2export(&md_conn);
 638
 639         ctxt = llog_get_context(&exp->exp_obd->obd_llogs,LLOG_CONFIG_REPL_CTXT);
 640         rc = class_config_process_llog(ctxt, profile, cfg);
 641         if (rc)
 642                 CERROR("class_config_process_llog failed: rc = %d\n", rc);
 643
 644         err = obd_disconnect(exp, 0);
 645
 646         EXIT;
 647 out_cleanup:
 648         lustre_cfg_bufs_reset(&bufs, name);
 649         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
 650         err = class_process_config(lcfg);
 651         lustre_cfg_free(lcfg);
 652         if (err < 0)
 653                 GOTO(out, err);
 654 out_detach:
 655         lustre_cfg_bufs_reset(&bufs, name);
 656         lcfg = lustre_cfg_new(LCFG_DETACH, &bufs);
 657         err = class_process_config(lcfg);
 658         lustre_cfg_free(lcfg);
 659         if (err < 0)
 660                 GOTO(out, err);
 661
 662 out_del_uuid:
 663         lustre_cfg_bufs_reset(&bufs, name);
 664         lustre_cfg_bufs_set_string(&bufs, 1, peer);
 665         lcfg = lustre_cfg_new(LCFG_DEL_UUID, &bufs);
 666         err = class_process_config(lcfg);
 667         lustre_cfg_free(lcfg);
 668
 669 out_del_conn:
 670         if (lmd->lmd_nal == SOCKNAL ||
 671             lmd->lmd_nal == OPENIBNAL ||
 672             lmd->lmd_nal == IIBNAL ||
 673             lmd->lmd_nal == VIBNAL ||
 674             lmd->lmd_nal == RANAL) {
 675                 int err2;
 676
 677                 PCFG_INIT(pcfg, NAL_CMD_DEL_PEER);
 678                 pcfg.pcfg_nal     = lmd->lmd_nal;
 679                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 680                 pcfg.pcfg_flags   = 1;          /* single_share */
 681                 err2 = libcfs_nal_cmd(&pcfg);
 682                 if (err2 && !err)
 683                         err = err2;
 684                 if (err < 0)
 685                         GOTO(out, err);
 686         }
 687 out:
 688         if (rc == 0)
 689                 rc = err;
 690
 691         return rc;
 692 }
 693
 694 static void lustre_manual_cleanup(struct ll_sb_info *sbi)
 695 {
 696         struct lustre_cfg *lcfg;
 697         struct lustre_cfg_bufs bufs;
 698         struct obd_device *obd;
 699         int next = 0;
 700
 701         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
 702         {
 703                 int err;
 704
 705                 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
 706                 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
 707                 err = class_process_config(lcfg);
 708                 if (err) {
 709                         CERROR("cleanup failed: %s\n", obd->obd_name);
 710                         //continue;
 711                 }
 712
 713                 lcfg->lcfg_command = LCFG_DETACH;
 714                 err = class_process_config(lcfg);
 715                 lustre_cfg_free(lcfg);
 716                 if (err) {
 717                         CERROR("detach failed: %s\n", obd->obd_name);
 718                         //continue;
 719                 }
 720         }
 721
 722         if (sbi->ll_lmd != NULL)
 723                 class_del_profile(sbi->ll_lmd->lmd_profile);
 724 }
 725
 726 int lustre_fill_super(struct super_block *sb, void *data, int silent)
 727 {
 728         struct lustre_mount_data * lmd = data;
 729         char *lov = NULL, *lmv = NULL;
 730         struct ll_sb_info *sbi;
 731         int err;
 732         ENTRY;
 733
 734         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 735         if (lmd_bad_magic(lmd))
 736                 RETURN(-EINVAL);
 737
 738         sbi = lustre_init_sbi(sb);
 739         if (!sbi)
 740                 RETURN(-ENOMEM);
 741
 742         sbi->ll_flags |= LL_SBI_READAHEAD;
 743
 744         if (lmd->lmd_profile) {
 745                 struct lustre_profile *lprof;
 746                 struct config_llog_instance cfg;
 747                 int len;
 748
 749                 if (lmd->lmd_mds[0] == '\0') {
 750                         CERROR("no mds name\n");
 751                         GOTO(out_free, err = -EINVAL);
 752                 }
 753                 lmd->lmd_mds_security[sizeof(lmd->lmd_mds_security) - 1] = 0;
 754                 lmd->lmd_oss_security[sizeof(lmd->lmd_oss_security) - 1] = 0;
 755
 756                 OBD_ALLOC(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 757                 if (sbi->ll_lmd == NULL)
 758                         GOTO(out_free, err = -ENOMEM);
 759                 memcpy(sbi->ll_lmd, lmd, sizeof(*lmd));
 760
 761                 /* generate a string unique to this super, let's try
 762                  the address of the super itself.*/
 763                 len = (sizeof(sb) * 2) + 1;
 764                 OBD_ALLOC(sbi->ll_instance, len);
 765                 if (sbi->ll_instance == NULL)
 766                         GOTO(out_free, err = -ENOMEM);
 767                 sprintf(sbi->ll_instance, "%p", sb);
 768
 769                 cfg.cfg_instance = sbi->ll_instance;
 770                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 771                 cfg.cfg_local_nid = lmd->lmd_local_nid;
 772                 err = lustre_process_log(lmd, lmd->lmd_profile, &cfg, 0);
 773                 if (err < 0) {
 774                         CERROR("Unable to process log: %s\n", lmd->lmd_profile);
 775                         GOTO(out_free, err);
 776                 }
 777
 778                 lprof = class_get_profile(lmd->lmd_profile);
 779                 if (lprof == NULL) {
 780                         CERROR("No profile found: %s\n", lmd->lmd_profile);
 781                         GOTO(out_free, err = -EINVAL);
 782                 }
 783                 if (lov)
 784                         OBD_FREE(lov, strlen(lov) + 1);
 785                 OBD_ALLOC(lov, strlen(lprof->lp_lov) +
 786                           strlen(sbi->ll_instance) + 2);
 787                 sprintf(lov, "%s-%s", lprof->lp_lov, sbi->ll_instance);
 788
 789                 if (lmv)
 790                         OBD_FREE(lmv, strlen(lmv) + 1);
 791                 OBD_ALLOC(lmv, strlen(lprof->lp_lmv) +
 792                           strlen(sbi->ll_instance) + 2);
 793                 sprintf(lmv, "%s-%s", lprof->lp_lmv, sbi->ll_instance);
 794         }
 795
 796         if (!lov) {
 797                 CERROR("no osc\n");
 798                 GOTO(out_free, err = -EINVAL);
 799         }
 800
 801         if (!lmv) {
 802                 CERROR("no mdc\n");
 803                 GOTO(out_free, err = -EINVAL);
 804         }
 805
 806         err = lustre_common_fill_super(sb, lmv, lov, lmd->lmd_async,
 807                                        lmd->lmd_mds_security,
 808                                        lmd->lmd_oss_security,
 809                                        &lmd->lmd_nllu, &lmd->lmd_remote_flag);
 810
 811         if (err)
 812                 GOTO(out_free, err);
 813
 814 out_dev:
 815         if (lmv)
 816                 OBD_FREE(lmv, strlen(lmv) + 1);
 817         if (lov)
 818                 OBD_FREE(lov, strlen(lov) + 1);
 819
 820         RETURN(err);
 821
 822 out_free:
 823         if (sbi->ll_lmd) {
 824                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 825                 int err;
 826
 827                 if (sbi->ll_instance != NULL) {
 828                         struct lustre_mount_data *lmd = sbi->ll_lmd;
 829                         struct config_llog_instance cfg;
 830                         char *cl_prof;
 831
 832                         cfg.cfg_instance = sbi->ll_instance;
 833                         cfg.cfg_uuid = sbi->ll_sb_uuid;
 834
 835                         OBD_ALLOC(cl_prof, len);
 836                         sprintf(cl_prof, "%s-clean", lmd->lmd_profile);
 837                         err = lustre_process_log(lmd, cl_prof, &cfg, 0);
 838                         if (err < 0) {
 839                                 CERROR("Unable to process log: %s\n", cl_prof);
 840                                 lustre_manual_cleanup(sbi);
 841                         }
 842                         OBD_FREE(cl_prof, len);
 843                         OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 844                 }
 845                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 846         }
 847         lustre_free_sbi(sb);
 848         goto out_dev;
 849 } /* lustre_fill_super */
 850
 851 void lustre_put_super(struct super_block *sb)
 852 {
 853         struct obd_device *obd;
 854         struct ll_sb_info *sbi = ll_s2sbi(sb);
 855         int force_umount = 0;
 856         ENTRY;
 857
 858         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 859         obd = class_exp2obd(sbi->ll_md_exp);
 860         if (obd)
 861                 force_umount = obd->obd_no_recov;
 862         obd = NULL;
 863
 864         lustre_common_put_super(sb);
 865         if (sbi->ll_lmd != NULL) {
 866                 char *cl_prof;
 867                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 868                 int err;
 869                 struct config_llog_instance cfg;
 870
 871                 if (force_umount) {
 872                         CERROR("force umount, doing manual cleanup\n");
 873                         lustre_manual_cleanup(sbi);
 874                         GOTO(free_lmd, 0);
 875                 }
 876
 877                 cfg.cfg_instance = sbi->ll_instance;
 878                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 879
 880                 OBD_ALLOC(cl_prof, len);
 881                 sprintf(cl_prof, "%s-clean", sbi->ll_lmd->lmd_profile);
 882                 err = lustre_process_log(sbi->ll_lmd, cl_prof, &cfg, 0);
 883                 if (err < 0) {
 884                         CERROR("Unable to process log: %s, doing manual cleanup"
 885                                "\n", cl_prof);
 886                         lustre_manual_cleanup(sbi);
 887                 }
 888
 889                 OBD_FREE(cl_prof, len);
 890         free_lmd:
 891                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 892                 OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 893         }
 894
 895         lustre_free_sbi(sb);
 896
 897         EXIT;
 898 } /* lustre_put_super */
 899
 900 int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 901 {
 902         struct lustre_mount_data *lmd = sbi->ll_lmd;
 903         char *profile = lmd->lmd_profile, *name = NULL;
 904         struct config_llog_instance cfg;
 905         int rc, namelen =  0, version;
 906         struct llog_ctxt *ctxt;
 907         ENTRY;
 908
 909         if (profile == NULL)
 910                 RETURN(0);
 911         if (lmd == NULL) {
 912                 CERROR("Client not mounted with zero-conf; cannot "
 913                        "process update log.\n");
 914                 RETURN(0);
 915         }
 916
 917         rc = obd_cancel_unused(sbi->ll_md_exp, NULL,
 918                                LDLM_FL_CONFIG_CHANGE, NULL);
 919         if (rc != 0)
 920                 CWARN("obd_cancel_unused(mdc): %d\n", rc);
 921
 922         rc = obd_cancel_unused(sbi->ll_dt_exp, NULL,
 923                                LDLM_FL_CONFIG_CHANGE, NULL);
 924         if (rc != 0)
 925                 CWARN("obd_cancel_unused(lov): %d\n", rc);
 926
 927         cfg.cfg_instance = sbi->ll_instance;
 928         cfg.cfg_uuid = sbi->ll_sb_uuid;
 929         cfg.cfg_local_nid = lmd->lmd_local_nid;
 930
 931         namelen = strlen(profile) + 20; /* -clean-######### */
 932         OBD_ALLOC(name, namelen);
 933         if (name == NULL)
 934                 RETURN(-ENOMEM);
 935
 936         if (clean) {
 937                 version = sbi->ll_config_version - 1;
 938                 sprintf(name, "%s-clean-%d", profile, version);
 939         } else {
 940                 version = sbi->ll_config_version + 1;
 941                 sprintf(name, "%s-%d", profile, version);
 942         }
 943
 944         CWARN("Applying configuration log %s\n", name);
 945
 946         ctxt = llog_get_context(&sbi->ll_md_exp->exp_obd->obd_llogs,
 947                                 LLOG_CONFIG_REPL_CTXT);
 948         rc = class_config_process_llog(ctxt, name, &cfg);
 949         if (rc == 0)
 950                 sbi->ll_config_version = version;
 951         CWARN("Finished applying configuration log %s: %d\n", name, rc);
 952
 953         if (rc == 0 && clean == 0) {
 954                 struct lov_desc desc;
 955                 __u32 valsize;
 956                 int rc = 0;
 957
 958                 valsize = sizeof(desc);
 959                 rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 960                                   "lovdesc", &valsize, &desc);
 961
 962                 rc = obd_init_ea_size(sbi->ll_md_exp,
 963                                       obd_size_diskmd(sbi->ll_dt_exp, NULL),
 964                                       (desc.ld_tgt_count *
 965                                        sizeof(struct llog_cookie)));
 966         }
 967         OBD_FREE(name, namelen);
 968         RETURN(rc);
 969 }
 970
 971 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
 972 {
 973         struct inode *inode = NULL;
 974         l_lock(&lock->l_resource->lr_namespace->ns_lock);
 975         if (lock->l_ast_data) {
 976                 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
 977                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
 978                         inode = igrab(lock->l_ast_data);
 979                 } else {
 980                         inode = lock->l_ast_data;
 981                         CDEBUG(inode->i_state & I_FREEING ? D_INFO : D_WARNING,
 982                                "l_ast_data %p is bogus: magic %0x8\n",
 983                                lock->l_ast_data, lli->lli_inode_magic);
 984                         inode = NULL;
 985                 }
 986         }
 987         l_unlock(&lock->l_resource->lr_namespace->ns_lock);
 988         return inode;
 989 }
 990
 991 int null_if_equal(struct ldlm_lock *lock, void *data)
 992 {
 993         if (data == lock->l_ast_data) {
 994                 lock->l_ast_data = NULL;
 995
 996                 if (lock->l_req_mode != lock->l_granted_mode)
 997                         LDLM_ERROR(lock,"clearing inode with ungranted lock\n");
 998         }
 999
1000         return LDLM_ITER_CONTINUE;
1001 }
1002
1003 void ll_clear_inode(struct inode *inode)
1004 {
1005         struct lustre_id id;
1006         struct ll_inode_info *lli = ll_i2info(inode);
1007         struct ll_sb_info *sbi = ll_i2sbi(inode);
1008         ENTRY;
1009
1010         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1011                inode->i_generation, inode);
1012
1013         lli->lli_inode_magic = LLI_INODE_DEAD;
1014         ll_inode2id(&id, inode);
1015
1016         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &(ll_i2info(inode)->lli_flags));
1017         md_change_cbdata(sbi->ll_md_exp, &id, null_if_equal, inode);
1018
1019         LASSERT(!lli->lli_open_fd_write_count);
1020         LASSERT(!lli->lli_open_fd_read_count);
1021         LASSERT(!lli->lli_open_fd_exec_count);
1022         if (lli->lli_mds_write_och)
1023                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_WRITE);
1024         if (lli->lli_mds_exec_och)
1025                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_EXEC);
1026         if (lli->lli_mds_read_och)
1027                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_READ);
1028         if (lli->lli_smd)
1029                 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
1030                                   null_if_equal, inode);
1031
1032         if (lli->lli_smd) {
1033                 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1034                 lli->lli_smd = NULL;
1035         }
1036
1037         if (lli->lli_mea) {
1038                 obd_free_memmd(sbi->ll_md_exp,
1039                                (struct lov_stripe_md **) &lli->lli_mea);
1040                 lli->lli_mea = NULL;
1041         }
1042
1043         if (lli->lli_symlink_name) {
1044                 OBD_FREE(lli->lli_symlink_name,
1045                          strlen(lli->lli_symlink_name) + 1);
1046                 lli->lli_symlink_name = NULL;
1047         }
1048         lli->lli_inode_magic = LLI_INODE_DEAD;
1049
1050         EXIT;
1051 }
1052
1053 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1054  * object(s) determine the file size and mtime.  Otherwise, the MDS will
1055  * keep these values until such a time that objects are allocated for it.
1056  * We do the MDS operations first, as it is checking permissions for us.
1057  * We don't to the MDS RPC if there is nothing that we want to store there,
1058  * otherwise there is no harm in updating mtime/atime on the MDS if we are
1059  * going to do an RPC anyways.
1060  *
1061  * If we are doing a truncate, we will send the mtime and ctime updates
1062  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1063  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1064  * at the same time.
1065  */
1066 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1067 {
1068         struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1069         struct ll_sb_info *sbi = ll_i2sbi(inode);
1070         struct ptlrpc_request *request = NULL;
1071         struct mdc_op_data *op_data;
1072         int ia_valid = attr->ia_valid;
1073         int err, rc = 0;
1074         ENTRY;
1075
1076         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
1077         lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_SETATTR);
1078
1079         if (ia_valid & ATTR_SIZE) {
1080                 if (attr->ia_size > ll_file_maxbytes(inode)) {
1081                         CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1082                                attr->ia_size, ll_file_maxbytes(inode));
1083                         RETURN(-EFBIG);
1084                 }
1085
1086                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1087         }
1088
1089         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1090         if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1091                 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1092                         RETURN(-EPERM);
1093         }
1094
1095         /* We mark all of the fields "set" so MDS/OST does not re-set them */
1096         if (attr->ia_valid & ATTR_CTIME) {
1097                 attr->ia_ctime = CURRENT_TIME;
1098                 attr->ia_valid |= ATTR_CTIME_SET;
1099         }
1100         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1101                 attr->ia_atime = CURRENT_TIME;
1102                 attr->ia_valid |= ATTR_ATIME_SET;
1103         }
1104         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1105                 attr->ia_mtime = CURRENT_TIME;
1106                 attr->ia_valid |= ATTR_MTIME_SET;
1107         }
1108
1109         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1110                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1111                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1112                        LTIME_S(CURRENT_TIME));
1113
1114         if (lsm)
1115                 attr->ia_valid &= ~ATTR_SIZE;
1116
1117         /* If only OST attributes being set on objects, don't do MDS RPC.
1118          * In that case, we need to check permissions and update the local
1119          * inode ourselves so we can call obdo_from_inode() always. */
1120         if (ia_valid & (lsm ? ~(ATTR_SIZE | ATTR_FROM_OPEN /*| ATTR_RAW*/) : ~0)) {
1121                 struct lustre_md md;
1122
1123                 OBD_ALLOC(op_data, sizeof(*op_data));
1124                 if (op_data == NULL)
1125                         RETURN(-ENOMEM);
1126                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1127
1128                 rc = md_setattr(sbi->ll_md_exp, op_data,
1129                                 attr, NULL, 0, NULL, 0, &request);
1130                 OBD_FREE(op_data, sizeof(*op_data));
1131                 if (rc) {
1132                         ptlrpc_req_finished(request);
1133                         if (rc != -EPERM && rc != -EACCES)
1134                                 CERROR("md_setattr fails: rc = %d\n", rc);
1135                         RETURN(rc);
1136                 }
1137
1138                 rc = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
1139                                        sbi->ll_dt_exp, &md);
1140                 if (rc) {
1141                         ptlrpc_req_finished(request);
1142                         RETURN(rc);
1143                 }
1144
1145                 /* We call inode_setattr to adjust timestamps, but we first
1146                  * clear ATTR_SIZE to avoid invoking vmtruncate.
1147                  *
1148                  * NB: ATTR_SIZE will only be set at this point if the size
1149                  * resides on the MDS, ie, this file has no objects. */
1150                 attr->ia_valid &= ~ATTR_SIZE;
1151
1152                 /*
1153                  * assigning inode_setattr() to @err to disable warning that
1154                  * function's result should be checked by by caller. error is
1155                  * impossible here, as vmtruncate() control path is disabled.
1156                  */
1157                 err = inode_setattr(inode, attr);
1158                 ll_update_inode(inode, &md);
1159                 ptlrpc_req_finished(request);
1160
1161                 if (!lsm || !S_ISREG(inode->i_mode)) {
1162                         CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1163                         RETURN(0);
1164                 }
1165         } else {
1166                 /* The OST doesn't check permissions, but the alternative is
1167                  * a gratuitous RPC to the MDS.  We already rely on the client
1168                  * to do read/write/truncate permission checks, so is mtime OK?
1169                  */
1170                 if (ia_valid & (ATTR_MTIME | ATTR_ATIME)) {
1171                         /* from sys_utime() */
1172                         if (!(ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))) {
1173                                 if (current->fsuid != inode->i_uid &&
1174                                     (rc=ll_permission(inode,MAY_WRITE,NULL))!=0)
1175                                         RETURN(rc);
1176                         } else {
1177                                 /* from inode_change_ok() */
1178                                 if (current->fsuid != inode->i_uid &&
1179                                     !capable(CAP_FOWNER))
1180                                         RETURN(-EPERM);
1181                         }
1182                 }
1183
1184                 /* won't invoke vmtruncate, as we already cleared ATTR_SIZE */
1185                 err = inode_setattr(inode, attr);
1186                 /*
1187                  * assigning inode_setattr() to @err to disable warning that
1188                  * function's result should be checked by by caller. error is
1189                  * impossible here, as vmtruncate() control path is disabled.
1190                  */
1191         }
1192
1193         /* We really need to get our PW lock before we change inode->i_size.
1194          * If we don't we can race with other i_size updaters on our node, like
1195          * ll_file_read.  We can also race with i_size propogation to other
1196          * nodes through dirtying and writeback of final cached pages.  This
1197          * last one is especially bad for racing o_append users on other
1198          * nodes. */
1199         if (ia_valid & ATTR_SIZE) {
1200                 ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
1201                                                            OBD_OBJECT_EOF } };
1202                 struct lustre_handle lockh = { 0 };
1203                 struct ll_inode_info *lli = ll_i2info(inode);
1204                 int err, ast_flags = 0;
1205                 /* XXX when we fix the AST intents to pass the discard-range
1206                  * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1207                  * XXX here. */
1208                 if (attr->ia_size == 0)
1209                         ast_flags = LDLM_AST_DISCARD_DATA;
1210
1211                 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy, &lockh,
1212                                     ast_flags, &ll_i2sbi(inode)->ll_seek_stime);
1213
1214                 if (rc != 0)
1215                         RETURN(rc);
1216
1217                 down(&lli->lli_size_sem);
1218                 lli->lli_size_pid = current->pid;
1219                 rc = vmtruncate(inode, attr->ia_size);
1220                 if (rc != 0) {
1221                         LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1222                         lli->lli_size_pid = 0;
1223                         up(&lli->lli_size_sem);
1224                 }
1225
1226                 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1227                 if (err) {
1228                         CERROR("ll_extent_unlock failed: %d\n", err);
1229                         if (!rc)
1230                                 rc = err;
1231                 }
1232         } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1233                 struct obdo *oa = NULL;
1234
1235                 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1236                        inode->i_ino, LTIME_S(attr->ia_mtime));
1237
1238                 oa = obdo_alloc();
1239                 if (oa == NULL)
1240                         RETURN(-ENOMEM);
1241
1242                 oa->o_id = lsm->lsm_object_id;
1243                 oa->o_gr = lsm->lsm_object_gr;
1244                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1245                 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1246                                 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1247                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1248                 obdo_free(oa);
1249                 if (rc)
1250                         CERROR("obd_setattr fails: rc = %d\n", rc);
1251         }
1252         RETURN(rc);
1253 }
1254
1255 int ll_setattr(struct dentry *de, struct iattr *attr)
1256 {
1257         LASSERT(de->d_inode);
1258         return ll_setattr_raw(de->d_inode, attr);
1259 }
1260
1261 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1262                        unsigned long max_age)
1263 {
1264         struct ll_sb_info *sbi = ll_s2sbi(sb);
1265         struct obd_statfs obd_osfs;
1266         int rc;
1267         ENTRY;
1268
1269         rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age);
1270         if (rc) {
1271                 CERROR("obd_statfs fails: rc = %d\n", rc);
1272                 RETURN(rc);
1273         }
1274
1275         osfs->os_type = sb->s_magic;
1276
1277         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1278                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1279
1280         rc = obd_statfs(class_exp2obd(sbi->ll_dt_exp), &obd_osfs, max_age);
1281         if (rc) {
1282                 CERROR("obd_statfs fails: rc = %d\n", rc);
1283                 RETURN(rc);
1284         }
1285
1286         CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1287                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1288                obd_osfs.os_files);
1289
1290         osfs->os_blocks = obd_osfs.os_blocks;
1291         osfs->os_bfree = obd_osfs.os_bfree;
1292         osfs->os_bavail = obd_osfs.os_bavail;
1293
1294         /* If we don't have as many objects free on the OST as inodes
1295          * on the MDS, we reduce the total number of inodes to
1296          * compensate, so that the "inodes in use" number is correct.
1297          */
1298         if (obd_osfs.os_ffree < osfs->os_ffree) {
1299                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1300                         obd_osfs.os_ffree;
1301                 osfs->os_ffree = obd_osfs.os_ffree;
1302         }
1303
1304         RETURN(rc);
1305 }
1306
1307 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1308 {
1309         struct obd_statfs osfs;
1310         int rc;
1311
1312         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p\n", sb);
1313         lprocfs_counter_incr(ll_s2sbi(sb)->ll_stats, LPROC_LL_STAFS);
1314
1315         /* For now we will always get up-to-date statfs values, but in the
1316          * future we may allow some amount of caching on the client (e.g.
1317          * from QOS or lprocfs updates). */
1318         rc = ll_statfs_internal(sb, &osfs, jiffies - 1);
1319         if (rc)
1320                 return rc;
1321
1322         statfs_unpack(sfs, &osfs);
1323
1324         if (sizeof(sfs->f_blocks) == 4) {
1325                 while (osfs.os_blocks > ~0UL) {
1326                         sfs->f_bsize <<= 1;
1327
1328                         osfs.os_blocks >>= 1;
1329                         osfs.os_bfree >>= 1;
1330                         osfs.os_bavail >>= 1;
1331                 }
1332         }
1333
1334         sfs->f_blocks = osfs.os_blocks;
1335         sfs->f_bfree = osfs.os_bfree;
1336         sfs->f_bavail = osfs.os_bavail;
1337
1338         return 0;
1339 }
1340
1341 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1342 {
1343         struct ll_inode_info *lli = ll_i2info(inode);
1344         struct lov_stripe_md *lsm = md->lsm;
1345         struct mds_body *body = md->body;
1346         struct mea *mea = md->mea;
1347         struct posix_acl *ll_acl_access = md->acl_access;
1348         ENTRY;
1349
1350         LASSERT((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1351
1352         if (md->lsm && md->lsm->lsm_magic != LOV_MAGIC) {
1353                 /* check for default striping info for dir. */
1354                 LASSERT((mea != NULL) == ((body->valid & OBD_MD_FLDIREA) != 0));
1355         }
1356
1357         if (lsm != NULL) {
1358                 LASSERT(lsm->lsm_object_gr > 0);
1359                 if (lli->lli_smd == NULL) {
1360                         lli->lli_smd = lsm;
1361                         lli->lli_maxbytes = lsm->lsm_maxbytes;
1362                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1363                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1364                 } else {
1365                         int i;
1366                         if (memcmp(lli->lli_smd, lsm, sizeof(*lsm))) {
1367                                 CERROR("lsm mismatch for inode %ld\n",
1368                                        inode->i_ino);
1369                                 CERROR("lli_smd:\n");
1370                                 dump_lsm(D_ERROR, lli->lli_smd);
1371                                 CERROR("lsm:\n");
1372                                 dump_lsm(D_ERROR, lsm);
1373                                 LBUG();
1374                         }
1375                         /* XXX FIXME -- We should decide on a safer (atomic) and
1376                          * more elegant way to update the lsm */
1377                         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1378                                 lli->lli_smd->lsm_oinfo[i].loi_id =
1379                                         lsm->lsm_oinfo[i].loi_id;
1380                                 lli->lli_smd->lsm_oinfo[i].loi_gr =
1381                                         lsm->lsm_oinfo[i].loi_gr;
1382                                 lli->lli_smd->lsm_oinfo[i].loi_ost_idx =
1383                                         lsm->lsm_oinfo[i].loi_ost_idx;
1384                                 lli->lli_smd->lsm_oinfo[i].loi_ost_gen =
1385                                         lsm->lsm_oinfo[i].loi_ost_gen;
1386                         }
1387                 }
1388                 /* bug 2844 - limit i_blksize for broken user-space apps */
1389                 LASSERTF(lsm->lsm_xfersize != 0, "%lu\n", lsm->lsm_xfersize);
1390                 inode->i_blksize = min(lsm->lsm_xfersize, LL_MAX_BLKSIZE);
1391                 if (lli->lli_smd != lsm)
1392                         obd_free_memmd(ll_i2dtexp(inode), &lsm);
1393         }
1394
1395         if (mea != NULL) {
1396                 if (lli->lli_mea == NULL) {
1397                         lli->lli_mea = mea;
1398                 } else {
1399                         if (memcmp(lli->lli_mea, mea, body->eadatasize)) {
1400                                 CERROR("mea mismatch for inode %lu\n",
1401                                         inode->i_ino);
1402                                 LBUG();
1403                         }
1404                 }
1405                 if (lli->lli_mea != mea)
1406                         obd_free_memmd(ll_i2mdexp(inode),
1407                                        (struct lov_stripe_md **) &mea);
1408         }
1409
1410         if (body->valid & OBD_MD_FID)
1411                 id_assign_fid(&lli->lli_id, &body->id1);
1412
1413         if (body->valid & OBD_MD_FLID)
1414                 id_ino(&lli->lli_id) = id_ino(&body->id1);
1415
1416         if (body->valid & OBD_MD_FLGENER)
1417                 id_gen(&lli->lli_id) = id_gen(&body->id1);
1418
1419         spin_lock(&lli->lli_lock);
1420         if (ll_acl_access != NULL) {
1421                 if (lli->lli_acl_access != NULL)
1422                         posix_acl_release(lli->lli_acl_access);
1423                 lli->lli_acl_access = ll_acl_access;
1424         }
1425         spin_unlock(&lli->lli_lock);
1426
1427         if (body->valid & OBD_MD_FLID)
1428                 inode->i_ino = id_ino(&body->id1);
1429         if (body->valid & OBD_MD_FLGENER)
1430                 inode->i_generation = id_gen(&body->id1);
1431         if (body->valid & OBD_MD_FLATIME)
1432                 LTIME_S(inode->i_atime) = body->atime;
1433         if (body->valid & OBD_MD_FLMTIME &&
1434             body->mtime > LTIME_S(inode->i_mtime)) {
1435                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to %u\n",
1436                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
1437                 LTIME_S(inode->i_mtime) = body->mtime;
1438         }
1439         if (body->valid & OBD_MD_FLCTIME &&
1440             body->ctime > LTIME_S(inode->i_ctime))
1441                 LTIME_S(inode->i_ctime) = body->ctime;
1442         if (body->valid & OBD_MD_FLMODE) {
1443                 inode->i_mode = (inode->i_mode & S_IFMT) |
1444                         (body->mode & ~S_IFMT);
1445         }
1446         if (body->valid & OBD_MD_FLTYPE) {
1447                 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1448                         (body->mode & S_IFMT);
1449         }
1450         if (body->valid & OBD_MD_FLUID)
1451                 inode->i_uid = body->uid;
1452         if (body->valid & OBD_MD_FLGID)
1453                 inode->i_gid = body->gid;
1454         if (body->valid & OBD_MD_FLFLAGS)
1455                 inode->i_flags = body->flags;
1456         if (body->valid & OBD_MD_FLNLINK)
1457                 inode->i_nlink = body->nlink;
1458         if (body->valid & OBD_MD_FLRDEV)
1459 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1460                 inode->i_rdev = body->rdev;
1461 #else
1462                 inode->i_rdev = old_decode_dev(body->rdev);
1463 #endif
1464         if (body->valid & OBD_MD_FLSIZE)
1465                 inode->i_size = body->size;
1466         if (body->valid & OBD_MD_FLBLOCKS)
1467                 inode->i_blocks = body->blocks;
1468
1469         if (body->valid & OBD_MD_FLSIZE)
1470                 set_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &lli->lli_flags);
1471
1472 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1473         inode->i_dev = (kdev_t)id_group(&lli->lli_id);
1474 #endif
1475         LASSERT(id_fid(&lli->lli_id) != 0);
1476 }
1477
1478 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
1479 static struct backing_dev_info ll_backing_dev_info = {
1480         .ra_pages       = 0,    /* No readahead */
1481         .memory_backed  = 0,    /* Does contribute to dirty memory */
1482 };
1483 #endif
1484
1485 void ll_read_inode2(struct inode *inode, void *opaque)
1486 {
1487         struct lustre_md *md = opaque;
1488         struct ll_inode_info *lli = ll_i2info(inode);
1489         ENTRY;
1490
1491         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1492                inode->i_generation, inode);
1493
1494         ll_lli_init(lli);
1495
1496         LASSERT(!lli->lli_smd);
1497
1498         /* Core attributes from the MDS first.  This is a new inode, and
1499          * the VFS doesn't zero times in the core inode so we have to do
1500          * it ourselves.  They will be overwritten by either MDS or OST
1501          * attributes - we just need to make sure they aren't newer. */
1502         LTIME_S(inode->i_mtime) = 0;
1503         LTIME_S(inode->i_atime) = 0;
1504         LTIME_S(inode->i_ctime) = 0;
1505
1506         inode->i_rdev = 0;
1507         ll_update_inode(inode, md);
1508
1509         /* OIDEBUG(inode); */
1510
1511         if (S_ISREG(inode->i_mode)) {
1512                 inode->i_op = &ll_file_inode_operations;
1513                 inode->i_fop = &ll_file_operations;
1514                 inode->i_mapping->a_ops = &ll_aops;
1515                 EXIT;
1516         } else if (S_ISDIR(inode->i_mode)) {
1517                 inode->i_op = &ll_dir_inode_operations;
1518                 inode->i_fop = &ll_dir_operations;
1519                 inode->i_mapping->a_ops = &ll_dir_aops;
1520                 EXIT;
1521         } else if (S_ISLNK(inode->i_mode)) {
1522                 inode->i_op = &ll_fast_symlink_inode_operations;
1523                 EXIT;
1524         } else {
1525                 inode->i_op = &ll_special_inode_operations;
1526
1527 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1528                 init_special_inode(inode, inode->i_mode,
1529                                    kdev_t_to_nr(inode->i_rdev));
1530
1531                 /* initializing backing dev info. */
1532                 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1533 #else
1534                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1535 #endif
1536                 lli->ll_save_ifop = inode->i_fop;
1537
1538                 if (S_ISCHR(inode->i_mode))
1539                         inode->i_fop = &ll_special_chr_inode_fops;
1540                 else if (S_ISBLK(inode->i_mode))
1541                         inode->i_fop = &ll_special_blk_inode_fops;
1542                 else if (S_ISFIFO(inode->i_mode))
1543                         inode->i_fop = &ll_special_fifo_inode_fops;
1544                 else if (S_ISSOCK(inode->i_mode))
1545                         inode->i_fop = &ll_special_sock_inode_fops;
1546
1547                 CWARN("saved %p, replaced with %p\n", lli->ll_save_ifop,
1548                       inode->i_fop);
1549
1550                 if (lli->ll_save_ifop->owner) {
1551                         CWARN("%p has owner %p\n", lli->ll_save_ifop,
1552                               lli->ll_save_ifop->owner);
1553                 }
1554                 EXIT;
1555         }
1556 }
1557
1558 void ll_delete_inode(struct inode *inode)
1559 {
1560         struct ll_sb_info *sbi = ll_i2sbi(inode);
1561         struct lustre_id id;
1562         int rc;
1563         ENTRY;
1564
1565         ll_inode2id(&id, inode);
1566
1567         rc = md_delete_inode(sbi->ll_md_exp, &id);
1568         if (rc) {
1569                 CERROR("md_delete_inode() failed, error %d\n",
1570                        rc);
1571         }
1572
1573         clear_inode(inode);
1574         EXIT;
1575 }
1576
1577 int ll_iocontrol(struct inode *inode, struct file *file,
1578                  unsigned int cmd, unsigned long arg)
1579 {
1580         struct ll_sb_info *sbi = ll_i2sbi(inode);
1581         struct ptlrpc_request *req = NULL;
1582         int rc, flags = 0;
1583         ENTRY;
1584
1585         switch(cmd) {
1586         case EXT3_IOC_GETFLAGS: {
1587                 struct lustre_id id;
1588                 __u64 valid = OBD_MD_FLFLAGS;
1589                 struct mds_body *body;
1590
1591                 ll_inode2id(&id, inode);
1592                 rc = md_getattr(sbi->ll_md_exp, &id, valid, NULL, 0, 0, &req);
1593                 if (rc) {
1594                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1595                         RETURN(-abs(rc));
1596                 }
1597
1598                 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body));
1599
1600                 if (body->flags & S_APPEND)
1601                         flags |= EXT3_APPEND_FL;
1602                 if (body->flags & S_IMMUTABLE)
1603                         flags |= EXT3_IMMUTABLE_FL;
1604                 if (body->flags & S_NOATIME)
1605                         flags |= EXT3_NOATIME_FL;
1606
1607                 ptlrpc_req_finished (req);
1608
1609                 RETURN(put_user(flags, (int *)arg));
1610         }
1611         case EXT3_IOC_SETFLAGS: {
1612                 struct mdc_op_data *op_data;
1613                 struct iattr attr;
1614                 struct obdo *oa;
1615                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1616
1617                 if (get_user(flags, (int *)arg))
1618                         RETURN(-EFAULT);
1619
1620                 oa = obdo_alloc();
1621                 if (!oa)
1622                         RETURN(-ENOMEM);
1623
1624                 OBD_ALLOC(op_data, sizeof(*op_data));
1625                 if (op_data == NULL) {
1626                         obdo_free(oa);
1627                         RETURN(-ENOMEM);
1628                 }
1629                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1630
1631                 memset(&attr, 0x0, sizeof(attr));
1632                 attr.ia_attr_flags = flags;
1633                 attr.ia_valid |= ATTR_ATTR_FLAG;
1634
1635                 rc = md_setattr(sbi->ll_md_exp, op_data,
1636                                 &attr, NULL, 0, NULL, 0, &req);
1637                 OBD_FREE(op_data, sizeof(*op_data));
1638                 if (rc) {
1639                         ptlrpc_req_finished(req);
1640                         if (rc != -EPERM && rc != -EACCES)
1641                                 CERROR("md_setattr fails: rc = %d\n", rc);
1642                         obdo_free(oa);
1643                         RETURN(rc);
1644                 }
1645                 ptlrpc_req_finished(req);
1646
1647                 oa->o_id = lsm->lsm_object_id;
1648                 oa->o_gr = lsm->lsm_object_gr;
1649                 oa->o_flags = flags;
1650                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1651
1652                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1653                 obdo_free(oa);
1654                 if (rc) {
1655                         if (rc != -EPERM && rc != -EACCES)
1656                                 CERROR("md_setattr fails: rc = %d\n", rc);
1657                         RETURN(rc);
1658                 }
1659
1660                 if (flags & EXT3_APPEND_FL)
1661                         inode->i_flags |= S_APPEND;
1662                 else
1663                         inode->i_flags &= ~S_APPEND;
1664                 if (flags & EXT3_IMMUTABLE_FL)
1665                         inode->i_flags |= S_IMMUTABLE;
1666                 else
1667                         inode->i_flags &= ~S_IMMUTABLE;
1668                 if (flags & EXT3_NOATIME_FL)
1669                         inode->i_flags |= S_NOATIME;
1670                 else
1671                         inode->i_flags &= ~S_NOATIME;
1672
1673                 RETURN(0);
1674         }
1675         default:
1676                 RETURN(-ENOSYS);
1677         }
1678
1679         RETURN(0);
1680 }
1681
1682 /* this is only called in the case of forced umount. */
1683 void ll_umount_begin(struct super_block *sb)
1684 {
1685         struct ll_sb_info *sbi = ll_s2sbi(sb);
1686         struct obd_ioctl_data ioc_data = { 0 };
1687         struct obd_device *obd;
1688         ENTRY;
1689
1690         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1691                sb->s_count, atomic_read(&sb->s_active));
1692
1693         obd = class_exp2obd(sbi->ll_md_exp);
1694         if (obd == NULL) {
1695                 CERROR("Invalid MDC connection handle "LPX64"\n",
1696                        sbi->ll_md_exp->exp_handle.h_cookie);
1697                 EXIT;
1698                 return;
1699         }
1700         obd->obd_no_recov = 1;
1701         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
1702                       sizeof(ioc_data), &ioc_data, NULL);
1703
1704         obd = class_exp2obd(sbi->ll_dt_exp);
1705         if (obd == NULL) {
1706                 CERROR("Invalid LOV connection handle "LPX64"\n",
1707                        sbi->ll_dt_exp->exp_handle.h_cookie);
1708                 EXIT;
1709                 return;
1710         }
1711
1712         obd->obd_no_recov = 1;
1713         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
1714                       sizeof(ioc_data), &ioc_data, NULL);
1715
1716         /*
1717          * really, we'd like to wait until there are no requests outstanding,
1718          * and then continue.  For now, we just invalidate the requests,
1719          * schedule, and hope.
1720          */
1721         schedule();
1722
1723         EXIT;
1724 }
1725
1726 int ll_prep_inode(struct obd_export *dt_exp, struct obd_export *md_exp,
1727                   struct inode **inode, struct ptlrpc_request *req,
1728                   int offset, struct super_block *sb)
1729 {
1730         struct lustre_md md;
1731         int rc = 0;
1732
1733         rc = mdc_req2lustre_md(md_exp, req, offset, dt_exp, &md);
1734         if (rc)
1735                 RETURN(rc);
1736
1737         if (*inode) {
1738                 ll_update_inode(*inode, &md);
1739         } else {
1740                 LASSERT(sb);
1741                 *inode = ll_iget(sb, id_ino(&md.body->id1), &md);
1742                 if (*inode == NULL || is_bad_inode(*inode)) {
1743                         /* free the lsm if we allocated one above */
1744                         if (md.lsm != NULL)
1745                                 obd_free_memmd(dt_exp, &md.lsm);
1746                         if (md.mea != NULL)
1747                                 obd_free_memmd(md_exp,
1748                                                (struct lov_stripe_md**)&md.mea);
1749                         rc = -ENOMEM;
1750                         CERROR("new_inode -fatal: rc %d\n", rc);
1751                 }
1752         }
1753
1754         RETURN(rc);
1755 }
1756
1757 int ll_get_fid(struct obd_export *exp, struct lustre_id *idp,
1758                char *filename, struct lustre_id *ret)
1759 {
1760         struct ptlrpc_request *request = NULL;
1761         struct mds_body *body;
1762         int rc;
1763
1764         rc = md_getattr_lock(exp, idp, filename, strlen(filename) + 1,
1765                              OBD_MD_FID, 0, &request);
1766         if (rc < 0) {
1767                 CDEBUG(D_INFO, "md_getattr_lock failed on %s: rc %d\n",
1768                        filename, rc);
1769                 return rc;
1770         }
1771
1772         body = lustre_msg_buf(request->rq_repmsg, 0, sizeof(*body));
1773         LASSERT(body != NULL);
1774         LASSERT_REPSWABBED(request, 0);
1775
1776         *ret = body->id1;
1777         ptlrpc_req_finished(request);
1778
1779         return rc;
1780 }