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) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/include/lustre_disk.h
38 * Lustre disk format definitions.
40 * Author: Nathan Rutman <nathan@clusterfs.com>
43 #ifndef _LUSTRE_DISK_H
44 #define _LUSTRE_DISK_H
46 /** \defgroup disk disk
51 #include <libcfs/libcfs.h>
52 #include <lnet/types.h>
54 /****************** on-disk files *********************/
56 #define MDT_LOGS_DIR "LOGS" /* COMPAT_146 */
57 #define MOUNT_CONFIGS_DIR "CONFIGS"
58 #define CONFIGS_FILE "mountdata"
59 /** Persistent mount data are stored on the disk in this file. */
60 #define MOUNT_DATA_FILE MOUNT_CONFIGS_DIR"/"CONFIGS_FILE
61 #define LAST_RCVD "last_rcvd"
62 #define LOV_OBJID "lov_objid"
63 #define HEALTH_CHECK "health_check"
64 #define CAPA_KEYS "capa_keys"
65 #define CHANGELOG_USERS "changelog_users"
66 #define MGS_NIDTBL_DIR "NIDTBL_VERSIONS"
67 #define QMT_DIR "quota_master"
68 #define QSD_DIR "quota_slave"
70 /****************** persistent mount data *********************/
72 #define LDD_F_SV_TYPE_MDT 0x0001
73 #define LDD_F_SV_TYPE_OST 0x0002
74 #define LDD_F_SV_TYPE_MGS 0x0004
75 #define LDD_F_SV_TYPE_MASK (LDD_F_SV_TYPE_MDT | \
78 #define LDD_F_SV_ALL 0x0008
79 /** need an index assignment */
80 #define LDD_F_NEED_INDEX 0x0010
81 /** never registered */
82 #define LDD_F_VIRGIN 0x0020
83 /** update the config logs for this server */
84 #define LDD_F_UPDATE 0x0040
85 /** rewrite the LDD */
86 #define LDD_F_REWRITE_LDD 0x0080
87 /** regenerate config logs for this fs or server */
88 #define LDD_F_WRITECONF 0x0100
90 #define LDD_F_UPGRADE14 0x0200
91 /** process as lctl conf_param */
92 #define LDD_F_PARAM 0x0400
93 /** backend fs make use of IAM directory format. */
94 #define LDD_F_IAM_DIR 0x0800
95 /** all nodes are specified as service nodes */
96 #define LDD_F_NO_PRIMNODE 0x1000
98 #define LDD_F_IR_CAPABLE 0x2000
99 /** the MGS refused to register the target. */
100 #define LDD_F_ERROR 0x4000
102 /* opc for target register */
103 #define LDD_F_OPC_REG 0x10000000
104 #define LDD_F_OPC_UNREG 0x20000000
105 #define LDD_F_OPC_READY 0x40000000
106 #define LDD_F_OPC_MASK 0xf0000000
108 #define LDD_F_ONDISK_MASK (LDD_F_SV_TYPE_MASK | LDD_F_IAM_DIR)
110 enum ldd_mount_type {
120 static inline char *mt_str(enum ldd_mount_type mt)
122 static char *mount_type_string[] = {
130 return mount_type_string[mt];
133 static inline char *mt_type(enum ldd_mount_type mt)
135 static char *mount_type_string[] = {
143 return mount_type_string[mt];
146 #define LDD_INCOMPAT_SUPP 0
147 #define LDD_ROCOMPAT_SUPP 0
149 #define LDD_MAGIC 0x1dd00001
151 /* On-disk configuration file. In host-endian order. */
152 struct lustre_disk_data {
154 __u32 ldd_feature_compat; /* compatible feature flags */
155 __u32 ldd_feature_rocompat;/* read-only compatible feature flags */
156 __u32 ldd_feature_incompat;/* incompatible feature flags */
158 __u32 ldd_config_ver; /* config rewrite count - not used */
159 __u32 ldd_flags; /* LDD_SV_TYPE */
160 __u32 ldd_svindex; /* server index (0001), must match
162 __u32 ldd_mount_type; /* target fs type LDD_MT_* */
163 char ldd_fsname[64]; /* filesystem this server is part of,
165 char ldd_svname[64]; /* this server's name (lustre-mdt0001)*/
166 __u8 ldd_uuid[40]; /* server UUID (COMPAT_146) */
168 /*200*/ char ldd_userdata[1024 - 200]; /* arbitrary user string */
169 /*1024*/__u8 ldd_padding[4096 - 1024];
170 /*4096*/char ldd_mount_opts[4096]; /* target fs mount opts */
171 /*8192*/char ldd_params[4096]; /* key=value pairs */
174 #define IS_MDT(data) ((data)->ldd_flags & LDD_F_SV_TYPE_MDT)
175 #define IS_OST(data) ((data)->ldd_flags & LDD_F_SV_TYPE_OST)
176 #define IS_MGS(data) ((data)->ldd_flags & LDD_F_SV_TYPE_MGS)
177 #define MT_STR(data) mt_str((data)->ldd_mount_type)
179 /* Make the mdt/ost server obd name based on the filesystem name */
180 static inline int server_make_name(__u32 flags, __u16 index, char *fs,
183 if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
184 if (!(flags & LDD_F_SV_ALL))
185 sprintf(name, "%.8s%c%s%04x", fs,
186 (flags & LDD_F_VIRGIN) ? ':' : '-',
187 (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
189 } else if (flags & LDD_F_SV_TYPE_MGS) {
190 sprintf(name, "MGS");
192 CERROR("unknown server type %#x\n", flags);
198 /* Get the index from the obd name */
199 int server_name2index(char *svname, __u32 *idx, char **endptr);
202 /****************** mount command *********************/
204 /* The lmd is only used internally by Lustre; mount simply passes
205 everything as string options */
207 #define LMD_MAGIC 0xbdacbd03
209 /* gleaned from the mount command - no persistent info here */
210 struct lustre_mount_data {
212 __u32 lmd_flags; /* lustre mount flags */
213 int lmd_mgs_failnodes; /* mgs failover node count */
214 int lmd_exclude_count;
215 int lmd_recovery_time_soft;
216 int lmd_recovery_time_hard;
217 char *lmd_dev; /* device name */
218 char *lmd_profile; /* client only */
219 char *lmd_mgssec; /* sptlrpc flavor to mgs */
220 char *lmd_opts; /* lustre mount options (as opposed to
221 _device_ mount options) */
222 __u32 *lmd_exclude; /* array of OSTs to ignore */
223 char *lmd_mgs; /* MGS nid */
224 char *lmd_osd_type; /* OSD type */
227 #define LMD_FLG_SERVER 0x0001 /* Mounting a server */
228 #define LMD_FLG_CLIENT 0x0002 /* Mounting a client */
229 #define LMD_FLG_ABORT_RECOV 0x0008 /* Abort recovery */
230 #define LMD_FLG_NOSVC 0x0010 /* Only start MGS/MGC for servers,
232 #define LMD_FLG_NOMGS 0x0020 /* Only start target for servers, reusing
233 existing MGS services */
234 #define LMD_FLG_WRITECONF 0x0040 /* Rewrite config log */
235 #define LMD_FLG_NOIR 0x0080 /* NO imperative recovery */
236 #define LMD_FLG_NOSCRUB 0x0100 /* Do not trigger scrub automatically */
238 #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT)
241 /****************** last_rcvd file *********************/
243 /** version recovery epoch */
244 #define LR_EPOCH_BITS 32
245 #define lr_epoch(a) ((a) >> LR_EPOCH_BITS)
246 #define LR_EXPIRE_INTERVALS 16 /**< number of intervals to track transno */
247 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
249 #define LR_SERVER_SIZE 512
250 #define LR_CLIENT_START 8192
251 #define LR_CLIENT_SIZE 128
252 #if LR_CLIENT_START < LR_SERVER_SIZE
253 #error "Can't have LR_CLIENT_START < LR_SERVER_SIZE"
257 * This limit is arbitrary (131072 clients on x86), but it is convenient to use
258 * 2^n * CFS_PAGE_SIZE * 8 for the number of bits that fit an order-n allocation.
259 * If we need more than 131072 clients (order-2 allocation on x86) then this
260 * should become an array of single-page pointers that are allocated on demand.
262 #if (128 * 1024UL) > (CFS_PAGE_SIZE * 8)
263 #define LR_MAX_CLIENTS (128 * 1024UL)
265 #define LR_MAX_CLIENTS (CFS_PAGE_SIZE * 8)
268 /** COMPAT_146: this is an OST (temporary) */
269 #define OBD_COMPAT_OST 0x00000002
270 /** COMPAT_146: this is an MDT (temporary) */
271 #define OBD_COMPAT_MDT 0x00000004
272 /** 2.0 server, interop flag to show server version is changed */
273 #define OBD_COMPAT_20 0x00000008
275 /** MDS handles LOV_OBJID file */
276 #define OBD_ROCOMPAT_LOVOBJID 0x00000001
278 /** OST handles group subdirs */
279 #define OBD_INCOMPAT_GROUPS 0x00000001
280 /** this is an OST */
281 #define OBD_INCOMPAT_OST 0x00000002
282 /** this is an MDT */
283 #define OBD_INCOMPAT_MDT 0x00000004
284 /** common last_rvcd format */
285 #define OBD_INCOMPAT_COMMON_LR 0x00000008
286 /** FID is enabled */
287 #define OBD_INCOMPAT_FID 0x00000010
288 /** Size-on-MDS is enabled */
289 #define OBD_INCOMPAT_SOM 0x00000020
290 /** filesystem using iam format to store directory entries */
291 #define OBD_INCOMPAT_IAM_DIR 0x00000040
292 /** LMA attribute contains per-inode incompatible flags */
293 #define OBD_INCOMPAT_LMA 0x00000080
294 /** lmm_stripe_count has been shrunk from __u32 to __u16 and the remaining 16
295 * bits are now used to store a generation. Once we start changing the layout
296 * and bumping the generation, old versions expecting a 32-bit lmm_stripe_count
297 * will be confused by interpreting stripe_count | gen << 16 as the actual
299 #define OBD_INCOMPAT_LMM_VER 0x00000100
300 /** multiple OI files for MDT */
301 #define OBD_INCOMPAT_MULTI_OI 0x00000200
303 /* Data stored per server at the head of the last_rcvd file. In le32 order.
304 This should be common to filter_internal.h, lustre_mds.h */
305 struct lr_server_data {
306 __u8 lsd_uuid[40]; /* server UUID */
307 __u64 lsd_last_transno; /* last completed transaction ID */
308 __u64 lsd_compat14; /* reserved - compat with old last_rcvd */
309 __u64 lsd_mount_count; /* incarnation number */
310 __u32 lsd_feature_compat; /* compatible feature flags */
311 __u32 lsd_feature_rocompat;/* read-only compatible feature flags */
312 __u32 lsd_feature_incompat;/* incompatible feature flags */
313 __u32 lsd_server_size; /* size of server data area */
314 __u32 lsd_client_start; /* start of per-client data area */
315 __u16 lsd_client_size; /* size of per-client data area */
316 __u16 lsd_subdir_count; /* number of subdirectories for objects */
317 __u64 lsd_catalog_oid; /* recovery catalog object id */
318 __u32 lsd_catalog_ogen; /* recovery catalog inode generation */
319 __u8 lsd_peeruuid[40]; /* UUID of MDS associated with this OST */
320 __u32 lsd_ost_index; /* index number of OST in LOV */
321 __u32 lsd_mdt_index; /* index number of MDT in LMV */
322 __u32 lsd_start_epoch; /* VBR: start epoch from last boot */
323 /** transaction values since lsd_trans_table_time */
324 __u64 lsd_trans_table[LR_EXPIRE_INTERVALS];
325 /** start point of transno table below */
326 __u32 lsd_trans_table_time; /* time of first slot in table above */
327 __u32 lsd_expire_intervals; /* LR_EXPIRE_INTERVALS */
328 __u8 lsd_padding[LR_SERVER_SIZE - 288];
331 /* Data stored per client in the last_rcvd file. In le32 order. */
332 struct lsd_client_data {
333 __u8 lcd_uuid[40]; /* client UUID */
334 __u64 lcd_last_transno; /* last completed transaction ID */
335 __u64 lcd_last_xid; /* xid for the last transaction */
336 __u32 lcd_last_result; /* result from last RPC */
337 __u32 lcd_last_data; /* per-op data (disposition for open &c.) */
338 /* for MDS_CLOSE requests */
339 __u64 lcd_last_close_transno; /* last completed transaction ID */
340 __u64 lcd_last_close_xid; /* xid for the last transaction */
341 __u32 lcd_last_close_result; /* result from last RPC */
342 __u32 lcd_last_close_data; /* per-op data */
343 /* VBR: last versions */
344 __u64 lcd_pre_versions[4];
345 __u32 lcd_last_epoch;
346 /** orphans handling for delayed export rely on that */
347 __u32 lcd_first_epoch;
348 __u8 lcd_padding[LR_CLIENT_SIZE - 128];
351 /* bug20354: the lcd_uuid for export of clients may be wrong */
352 static inline void check_lcd(char *obd_name, int index,
353 struct lsd_client_data *lcd)
355 int length = sizeof(lcd->lcd_uuid);
356 if (strnlen((char*)lcd->lcd_uuid, length) == length) {
357 lcd->lcd_uuid[length - 1] = '\0';
359 LCONSOLE_ERROR("the client UUID (%s) on %s for exports"
360 "stored in last_rcvd(index = %d) is bad!\n",
361 lcd->lcd_uuid, obd_name, index);
365 /* last_rcvd handling */
366 static inline void lsd_le_to_cpu(struct lr_server_data *buf,
367 struct lr_server_data *lsd)
370 memcpy(lsd->lsd_uuid, buf->lsd_uuid, sizeof (lsd->lsd_uuid));
371 lsd->lsd_last_transno = le64_to_cpu(buf->lsd_last_transno);
372 lsd->lsd_compat14 = le64_to_cpu(buf->lsd_compat14);
373 lsd->lsd_mount_count = le64_to_cpu(buf->lsd_mount_count);
374 lsd->lsd_feature_compat = le32_to_cpu(buf->lsd_feature_compat);
375 lsd->lsd_feature_rocompat = le32_to_cpu(buf->lsd_feature_rocompat);
376 lsd->lsd_feature_incompat = le32_to_cpu(buf->lsd_feature_incompat);
377 lsd->lsd_server_size = le32_to_cpu(buf->lsd_server_size);
378 lsd->lsd_client_start = le32_to_cpu(buf->lsd_client_start);
379 lsd->lsd_client_size = le16_to_cpu(buf->lsd_client_size);
380 lsd->lsd_subdir_count = le16_to_cpu(buf->lsd_subdir_count);
381 lsd->lsd_catalog_oid = le64_to_cpu(buf->lsd_catalog_oid);
382 lsd->lsd_catalog_ogen = le32_to_cpu(buf->lsd_catalog_ogen);
383 memcpy(lsd->lsd_peeruuid, buf->lsd_peeruuid, sizeof(lsd->lsd_peeruuid));
384 lsd->lsd_ost_index = le32_to_cpu(buf->lsd_ost_index);
385 lsd->lsd_mdt_index = le32_to_cpu(buf->lsd_mdt_index);
386 lsd->lsd_start_epoch = le32_to_cpu(buf->lsd_start_epoch);
387 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
388 lsd->lsd_trans_table[i] = le64_to_cpu(buf->lsd_trans_table[i]);
389 lsd->lsd_trans_table_time = le32_to_cpu(buf->lsd_trans_table_time);
390 lsd->lsd_expire_intervals = le32_to_cpu(buf->lsd_expire_intervals);
393 static inline void lsd_cpu_to_le(struct lr_server_data *lsd,
394 struct lr_server_data *buf)
397 memcpy(buf->lsd_uuid, lsd->lsd_uuid, sizeof (buf->lsd_uuid));
398 buf->lsd_last_transno = cpu_to_le64(lsd->lsd_last_transno);
399 buf->lsd_compat14 = cpu_to_le64(lsd->lsd_compat14);
400 buf->lsd_mount_count = cpu_to_le64(lsd->lsd_mount_count);
401 buf->lsd_feature_compat = cpu_to_le32(lsd->lsd_feature_compat);
402 buf->lsd_feature_rocompat = cpu_to_le32(lsd->lsd_feature_rocompat);
403 buf->lsd_feature_incompat = cpu_to_le32(lsd->lsd_feature_incompat);
404 buf->lsd_server_size = cpu_to_le32(lsd->lsd_server_size);
405 buf->lsd_client_start = cpu_to_le32(lsd->lsd_client_start);
406 buf->lsd_client_size = cpu_to_le16(lsd->lsd_client_size);
407 buf->lsd_subdir_count = cpu_to_le16(lsd->lsd_subdir_count);
408 buf->lsd_catalog_oid = cpu_to_le64(lsd->lsd_catalog_oid);
409 buf->lsd_catalog_ogen = cpu_to_le32(lsd->lsd_catalog_ogen);
410 memcpy(buf->lsd_peeruuid, lsd->lsd_peeruuid, sizeof(buf->lsd_peeruuid));
411 buf->lsd_ost_index = cpu_to_le32(lsd->lsd_ost_index);
412 buf->lsd_mdt_index = cpu_to_le32(lsd->lsd_mdt_index);
413 buf->lsd_start_epoch = cpu_to_le32(lsd->lsd_start_epoch);
414 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
415 buf->lsd_trans_table[i] = cpu_to_le64(lsd->lsd_trans_table[i]);
416 buf->lsd_trans_table_time = cpu_to_le32(lsd->lsd_trans_table_time);
417 buf->lsd_expire_intervals = cpu_to_le32(lsd->lsd_expire_intervals);
420 static inline void lcd_le_to_cpu(struct lsd_client_data *buf,
421 struct lsd_client_data *lcd)
423 memcpy(lcd->lcd_uuid, buf->lcd_uuid, sizeof (lcd->lcd_uuid));
424 lcd->lcd_last_transno = le64_to_cpu(buf->lcd_last_transno);
425 lcd->lcd_last_xid = le64_to_cpu(buf->lcd_last_xid);
426 lcd->lcd_last_result = le32_to_cpu(buf->lcd_last_result);
427 lcd->lcd_last_data = le32_to_cpu(buf->lcd_last_data);
428 lcd->lcd_last_close_transno = le64_to_cpu(buf->lcd_last_close_transno);
429 lcd->lcd_last_close_xid = le64_to_cpu(buf->lcd_last_close_xid);
430 lcd->lcd_last_close_result = le32_to_cpu(buf->lcd_last_close_result);
431 lcd->lcd_last_close_data = le32_to_cpu(buf->lcd_last_close_data);
432 lcd->lcd_pre_versions[0] = le64_to_cpu(buf->lcd_pre_versions[0]);
433 lcd->lcd_pre_versions[1] = le64_to_cpu(buf->lcd_pre_versions[1]);
434 lcd->lcd_pre_versions[2] = le64_to_cpu(buf->lcd_pre_versions[2]);
435 lcd->lcd_pre_versions[3] = le64_to_cpu(buf->lcd_pre_versions[3]);
436 lcd->lcd_last_epoch = le32_to_cpu(buf->lcd_last_epoch);
437 lcd->lcd_first_epoch = le32_to_cpu(buf->lcd_first_epoch);
440 static inline void lcd_cpu_to_le(struct lsd_client_data *lcd,
441 struct lsd_client_data *buf)
443 memcpy(buf->lcd_uuid, lcd->lcd_uuid, sizeof (lcd->lcd_uuid));
444 buf->lcd_last_transno = cpu_to_le64(lcd->lcd_last_transno);
445 buf->lcd_last_xid = cpu_to_le64(lcd->lcd_last_xid);
446 buf->lcd_last_result = cpu_to_le32(lcd->lcd_last_result);
447 buf->lcd_last_data = cpu_to_le32(lcd->lcd_last_data);
448 buf->lcd_last_close_transno = cpu_to_le64(lcd->lcd_last_close_transno);
449 buf->lcd_last_close_xid = cpu_to_le64(lcd->lcd_last_close_xid);
450 buf->lcd_last_close_result = cpu_to_le32(lcd->lcd_last_close_result);
451 buf->lcd_last_close_data = cpu_to_le32(lcd->lcd_last_close_data);
452 buf->lcd_pre_versions[0] = cpu_to_le64(lcd->lcd_pre_versions[0]);
453 buf->lcd_pre_versions[1] = cpu_to_le64(lcd->lcd_pre_versions[1]);
454 buf->lcd_pre_versions[2] = cpu_to_le64(lcd->lcd_pre_versions[2]);
455 buf->lcd_pre_versions[3] = cpu_to_le64(lcd->lcd_pre_versions[3]);
456 buf->lcd_last_epoch = cpu_to_le32(lcd->lcd_last_epoch);
457 buf->lcd_first_epoch = cpu_to_le32(lcd->lcd_first_epoch);
460 static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
462 return (lcd->lcd_last_transno > lcd->lcd_last_close_transno ?
463 lcd->lcd_last_transno : lcd->lcd_last_close_transno);
466 static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
468 return (lcd->lcd_last_xid > lcd->lcd_last_close_xid ?
469 lcd->lcd_last_xid : lcd->lcd_last_close_xid);
472 /****************** superblock additional info *********************/
477 struct lustre_sb_info {
479 struct obd_device *lsi_mgc; /* mgc obd */
480 struct lustre_mount_data *lsi_lmd; /* mount command info */
481 struct lustre_disk_data *lsi_ldd; /* mount info on-disk */
482 struct ll_sb_info *lsi_llsbi; /* add'l client sbi info */
483 struct vfsmount *lsi_srv_mnt; /* the one server mount */
484 cfs_atomic_t lsi_mounts; /* references to the srv_mnt */
485 char lsi_svname[MTI_NAME_MAXLEN];
486 char lsi_osd_type[16];
487 struct backing_dev_info lsi_bdi; /* each client mountpoint needs
488 own backing_dev_info */
491 #define LSI_SERVER 0x00000001
492 #define LSI_UMOUNT_FORCE 0x00000010
493 #define LSI_UMOUNT_FAILOVER 0x00000020
494 #define LSI_BDI_INITIALIZED 0x00000040
495 #define LSI_IR_CAPABLE 0x00000080
497 #define s2lsi(sb) ((struct lustre_sb_info *)((sb)->s_fs_info))
498 #define s2lsi_nocast(sb) ((sb)->s_fs_info)
500 #define get_profile_name(sb) (s2lsi(sb)->lsi_lmd->lmd_profile)
501 #define get_mount_flags(sb) (s2lsi(sb)->lsi_lmd->lmd_flags)
503 #endif /* __KERNEL__ */
505 /****************** mount lookup info *********************/
507 struct lustre_mount_info {
509 struct super_block *lmi_sb;
510 struct vfsmount *lmi_mnt;
511 cfs_list_t lmi_list_chain;
514 /****************** prototypes *********************/
519 void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb,
520 struct vfsmount *mnt));
521 void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb));
524 int lustre_common_put_super(struct super_block *sb);
525 struct lustre_mount_info *server_find_mount_locked(const char *name);
526 struct lustre_mount_info *server_get_mount(const char *name);
527 struct lustre_mount_info *server_get_mount_2(const char *name);
528 int server_put_mount(const char *name, struct vfsmount *mnt);
529 int server_put_mount_2(const char *name, struct vfsmount *mnt);
530 int server_register_target(struct super_block *sb);
531 struct mgs_target_info;
532 int server_mti_print(char *title, struct mgs_target_info *mti);
533 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd);
536 int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id, int type);
542 #endif // _LUSTRE_DISK_H