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-%s%04x", fs,
186 (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
188 } else if (flags & LDD_F_SV_TYPE_MGS) {
189 sprintf(name, "MGS");
191 CERROR("unknown server type %#x\n", flags);
197 /* Get the index from the obd name */
198 int server_name2index(char *svname, __u32 *idx, char **endptr);
201 /****************** mount command *********************/
203 /* The lmd is only used internally by Lustre; mount simply passes
204 everything as string options */
206 #define LMD_MAGIC 0xbdacbd03
208 /* gleaned from the mount command - no persistent info here */
209 struct lustre_mount_data {
211 __u32 lmd_flags; /* lustre mount flags */
212 int lmd_mgs_failnodes; /* mgs failover node count */
213 int lmd_exclude_count;
214 int lmd_recovery_time_soft;
215 int lmd_recovery_time_hard;
216 char *lmd_dev; /* device name */
217 char *lmd_profile; /* client only */
218 char *lmd_mgssec; /* sptlrpc flavor to mgs */
219 char *lmd_opts; /* lustre mount options (as opposed to
220 _device_ mount options) */
221 __u32 *lmd_exclude; /* array of OSTs to ignore */
222 char *lmd_mgs; /* MGS nid */
223 char *lmd_osd_type; /* OSD type */
226 #define LMD_FLG_SERVER 0x0001 /* Mounting a server */
227 #define LMD_FLG_CLIENT 0x0002 /* Mounting a client */
228 #define LMD_FLG_ABORT_RECOV 0x0008 /* Abort recovery */
229 #define LMD_FLG_NOSVC 0x0010 /* Only start MGS/MGC for servers,
231 #define LMD_FLG_NOMGS 0x0020 /* Only start target for servers, reusing
232 existing MGS services */
233 #define LMD_FLG_WRITECONF 0x0040 /* Rewrite config log */
234 #define LMD_FLG_NOIR 0x0080 /* NO imperative recovery */
235 #define LMD_FLG_NOSCRUB 0x0100 /* Do not trigger scrub automatically */
237 #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT)
240 /****************** last_rcvd file *********************/
242 /** version recovery epoch */
243 #define LR_EPOCH_BITS 32
244 #define lr_epoch(a) ((a) >> LR_EPOCH_BITS)
245 #define LR_EXPIRE_INTERVALS 16 /**< number of intervals to track transno */
246 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
248 #define LR_SERVER_SIZE 512
249 #define LR_CLIENT_START 8192
250 #define LR_CLIENT_SIZE 128
251 #if LR_CLIENT_START < LR_SERVER_SIZE
252 #error "Can't have LR_CLIENT_START < LR_SERVER_SIZE"
256 * This limit is arbitrary (131072 clients on x86), but it is convenient to use
257 * 2^n * CFS_PAGE_SIZE * 8 for the number of bits that fit an order-n allocation.
258 * If we need more than 131072 clients (order-2 allocation on x86) then this
259 * should become an array of single-page pointers that are allocated on demand.
261 #if (128 * 1024UL) > (CFS_PAGE_SIZE * 8)
262 #define LR_MAX_CLIENTS (128 * 1024UL)
264 #define LR_MAX_CLIENTS (CFS_PAGE_SIZE * 8)
267 /** COMPAT_146: this is an OST (temporary) */
268 #define OBD_COMPAT_OST 0x00000002
269 /** COMPAT_146: this is an MDT (temporary) */
270 #define OBD_COMPAT_MDT 0x00000004
271 /** 2.0 server, interop flag to show server version is changed */
272 #define OBD_COMPAT_20 0x00000008
274 /** MDS handles LOV_OBJID file */
275 #define OBD_ROCOMPAT_LOVOBJID 0x00000001
277 /** OST handles group subdirs */
278 #define OBD_INCOMPAT_GROUPS 0x00000001
279 /** this is an OST */
280 #define OBD_INCOMPAT_OST 0x00000002
281 /** this is an MDT */
282 #define OBD_INCOMPAT_MDT 0x00000004
283 /** common last_rvcd format */
284 #define OBD_INCOMPAT_COMMON_LR 0x00000008
285 /** FID is enabled */
286 #define OBD_INCOMPAT_FID 0x00000010
287 /** Size-on-MDS is enabled */
288 #define OBD_INCOMPAT_SOM 0x00000020
289 /** filesystem using iam format to store directory entries */
290 #define OBD_INCOMPAT_IAM_DIR 0x00000040
291 /** LMA attribute contains per-inode incompatible flags */
292 #define OBD_INCOMPAT_LMA 0x00000080
293 /** lmm_stripe_count has been shrunk from __u32 to __u16 and the remaining 16
294 * bits are now used to store a generation. Once we start changing the layout
295 * and bumping the generation, old versions expecting a 32-bit lmm_stripe_count
296 * will be confused by interpreting stripe_count | gen << 16 as the actual
298 #define OBD_INCOMPAT_LMM_VER 0x00000100
299 /** multiple OI files for MDT */
300 #define OBD_INCOMPAT_MULTI_OI 0x00000200
302 /* Data stored per server at the head of the last_rcvd file. In le32 order.
303 This should be common to filter_internal.h, lustre_mds.h */
304 struct lr_server_data {
305 __u8 lsd_uuid[40]; /* server UUID */
306 __u64 lsd_last_transno; /* last completed transaction ID */
307 __u64 lsd_compat14; /* reserved - compat with old last_rcvd */
308 __u64 lsd_mount_count; /* incarnation number */
309 __u32 lsd_feature_compat; /* compatible feature flags */
310 __u32 lsd_feature_rocompat;/* read-only compatible feature flags */
311 __u32 lsd_feature_incompat;/* incompatible feature flags */
312 __u32 lsd_server_size; /* size of server data area */
313 __u32 lsd_client_start; /* start of per-client data area */
314 __u16 lsd_client_size; /* size of per-client data area */
315 __u16 lsd_subdir_count; /* number of subdirectories for objects */
316 __u64 lsd_catalog_oid; /* recovery catalog object id */
317 __u32 lsd_catalog_ogen; /* recovery catalog inode generation */
318 __u8 lsd_peeruuid[40]; /* UUID of MDS associated with this OST */
319 __u32 lsd_ost_index; /* index number of OST in LOV */
320 __u32 lsd_mdt_index; /* index number of MDT in LMV */
321 __u32 lsd_start_epoch; /* VBR: start epoch from last boot */
322 /** transaction values since lsd_trans_table_time */
323 __u64 lsd_trans_table[LR_EXPIRE_INTERVALS];
324 /** start point of transno table below */
325 __u32 lsd_trans_table_time; /* time of first slot in table above */
326 __u32 lsd_expire_intervals; /* LR_EXPIRE_INTERVALS */
327 __u8 lsd_padding[LR_SERVER_SIZE - 288];
330 /* Data stored per client in the last_rcvd file. In le32 order. */
331 struct lsd_client_data {
332 __u8 lcd_uuid[40]; /* client UUID */
333 __u64 lcd_last_transno; /* last completed transaction ID */
334 __u64 lcd_last_xid; /* xid for the last transaction */
335 __u32 lcd_last_result; /* result from last RPC */
336 __u32 lcd_last_data; /* per-op data (disposition for open &c.) */
337 /* for MDS_CLOSE requests */
338 __u64 lcd_last_close_transno; /* last completed transaction ID */
339 __u64 lcd_last_close_xid; /* xid for the last transaction */
340 __u32 lcd_last_close_result; /* result from last RPC */
341 __u32 lcd_last_close_data; /* per-op data */
342 /* VBR: last versions */
343 __u64 lcd_pre_versions[4];
344 __u32 lcd_last_epoch;
345 /** orphans handling for delayed export rely on that */
346 __u32 lcd_first_epoch;
347 __u8 lcd_padding[LR_CLIENT_SIZE - 128];
350 /* bug20354: the lcd_uuid for export of clients may be wrong */
351 static inline void check_lcd(char *obd_name, int index,
352 struct lsd_client_data *lcd)
354 int length = sizeof(lcd->lcd_uuid);
355 if (strnlen((char*)lcd->lcd_uuid, length) == length) {
356 lcd->lcd_uuid[length - 1] = '\0';
358 LCONSOLE_ERROR("the client UUID (%s) on %s for exports"
359 "stored in last_rcvd(index = %d) is bad!\n",
360 lcd->lcd_uuid, obd_name, index);
364 /* last_rcvd handling */
365 static inline void lsd_le_to_cpu(struct lr_server_data *buf,
366 struct lr_server_data *lsd)
369 memcpy(lsd->lsd_uuid, buf->lsd_uuid, sizeof (lsd->lsd_uuid));
370 lsd->lsd_last_transno = le64_to_cpu(buf->lsd_last_transno);
371 lsd->lsd_compat14 = le64_to_cpu(buf->lsd_compat14);
372 lsd->lsd_mount_count = le64_to_cpu(buf->lsd_mount_count);
373 lsd->lsd_feature_compat = le32_to_cpu(buf->lsd_feature_compat);
374 lsd->lsd_feature_rocompat = le32_to_cpu(buf->lsd_feature_rocompat);
375 lsd->lsd_feature_incompat = le32_to_cpu(buf->lsd_feature_incompat);
376 lsd->lsd_server_size = le32_to_cpu(buf->lsd_server_size);
377 lsd->lsd_client_start = le32_to_cpu(buf->lsd_client_start);
378 lsd->lsd_client_size = le16_to_cpu(buf->lsd_client_size);
379 lsd->lsd_subdir_count = le16_to_cpu(buf->lsd_subdir_count);
380 lsd->lsd_catalog_oid = le64_to_cpu(buf->lsd_catalog_oid);
381 lsd->lsd_catalog_ogen = le32_to_cpu(buf->lsd_catalog_ogen);
382 memcpy(lsd->lsd_peeruuid, buf->lsd_peeruuid, sizeof(lsd->lsd_peeruuid));
383 lsd->lsd_ost_index = le32_to_cpu(buf->lsd_ost_index);
384 lsd->lsd_mdt_index = le32_to_cpu(buf->lsd_mdt_index);
385 lsd->lsd_start_epoch = le32_to_cpu(buf->lsd_start_epoch);
386 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
387 lsd->lsd_trans_table[i] = le64_to_cpu(buf->lsd_trans_table[i]);
388 lsd->lsd_trans_table_time = le32_to_cpu(buf->lsd_trans_table_time);
389 lsd->lsd_expire_intervals = le32_to_cpu(buf->lsd_expire_intervals);
392 static inline void lsd_cpu_to_le(struct lr_server_data *lsd,
393 struct lr_server_data *buf)
396 memcpy(buf->lsd_uuid, lsd->lsd_uuid, sizeof (buf->lsd_uuid));
397 buf->lsd_last_transno = cpu_to_le64(lsd->lsd_last_transno);
398 buf->lsd_compat14 = cpu_to_le64(lsd->lsd_compat14);
399 buf->lsd_mount_count = cpu_to_le64(lsd->lsd_mount_count);
400 buf->lsd_feature_compat = cpu_to_le32(lsd->lsd_feature_compat);
401 buf->lsd_feature_rocompat = cpu_to_le32(lsd->lsd_feature_rocompat);
402 buf->lsd_feature_incompat = cpu_to_le32(lsd->lsd_feature_incompat);
403 buf->lsd_server_size = cpu_to_le32(lsd->lsd_server_size);
404 buf->lsd_client_start = cpu_to_le32(lsd->lsd_client_start);
405 buf->lsd_client_size = cpu_to_le16(lsd->lsd_client_size);
406 buf->lsd_subdir_count = cpu_to_le16(lsd->lsd_subdir_count);
407 buf->lsd_catalog_oid = cpu_to_le64(lsd->lsd_catalog_oid);
408 buf->lsd_catalog_ogen = cpu_to_le32(lsd->lsd_catalog_ogen);
409 memcpy(buf->lsd_peeruuid, lsd->lsd_peeruuid, sizeof(buf->lsd_peeruuid));
410 buf->lsd_ost_index = cpu_to_le32(lsd->lsd_ost_index);
411 buf->lsd_mdt_index = cpu_to_le32(lsd->lsd_mdt_index);
412 buf->lsd_start_epoch = cpu_to_le32(lsd->lsd_start_epoch);
413 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
414 buf->lsd_trans_table[i] = cpu_to_le64(lsd->lsd_trans_table[i]);
415 buf->lsd_trans_table_time = cpu_to_le32(lsd->lsd_trans_table_time);
416 buf->lsd_expire_intervals = cpu_to_le32(lsd->lsd_expire_intervals);
419 static inline void lcd_le_to_cpu(struct lsd_client_data *buf,
420 struct lsd_client_data *lcd)
422 memcpy(lcd->lcd_uuid, buf->lcd_uuid, sizeof (lcd->lcd_uuid));
423 lcd->lcd_last_transno = le64_to_cpu(buf->lcd_last_transno);
424 lcd->lcd_last_xid = le64_to_cpu(buf->lcd_last_xid);
425 lcd->lcd_last_result = le32_to_cpu(buf->lcd_last_result);
426 lcd->lcd_last_data = le32_to_cpu(buf->lcd_last_data);
427 lcd->lcd_last_close_transno = le64_to_cpu(buf->lcd_last_close_transno);
428 lcd->lcd_last_close_xid = le64_to_cpu(buf->lcd_last_close_xid);
429 lcd->lcd_last_close_result = le32_to_cpu(buf->lcd_last_close_result);
430 lcd->lcd_last_close_data = le32_to_cpu(buf->lcd_last_close_data);
431 lcd->lcd_pre_versions[0] = le64_to_cpu(buf->lcd_pre_versions[0]);
432 lcd->lcd_pre_versions[1] = le64_to_cpu(buf->lcd_pre_versions[1]);
433 lcd->lcd_pre_versions[2] = le64_to_cpu(buf->lcd_pre_versions[2]);
434 lcd->lcd_pre_versions[3] = le64_to_cpu(buf->lcd_pre_versions[3]);
435 lcd->lcd_last_epoch = le32_to_cpu(buf->lcd_last_epoch);
436 lcd->lcd_first_epoch = le32_to_cpu(buf->lcd_first_epoch);
439 static inline void lcd_cpu_to_le(struct lsd_client_data *lcd,
440 struct lsd_client_data *buf)
442 memcpy(buf->lcd_uuid, lcd->lcd_uuid, sizeof (lcd->lcd_uuid));
443 buf->lcd_last_transno = cpu_to_le64(lcd->lcd_last_transno);
444 buf->lcd_last_xid = cpu_to_le64(lcd->lcd_last_xid);
445 buf->lcd_last_result = cpu_to_le32(lcd->lcd_last_result);
446 buf->lcd_last_data = cpu_to_le32(lcd->lcd_last_data);
447 buf->lcd_last_close_transno = cpu_to_le64(lcd->lcd_last_close_transno);
448 buf->lcd_last_close_xid = cpu_to_le64(lcd->lcd_last_close_xid);
449 buf->lcd_last_close_result = cpu_to_le32(lcd->lcd_last_close_result);
450 buf->lcd_last_close_data = cpu_to_le32(lcd->lcd_last_close_data);
451 buf->lcd_pre_versions[0] = cpu_to_le64(lcd->lcd_pre_versions[0]);
452 buf->lcd_pre_versions[1] = cpu_to_le64(lcd->lcd_pre_versions[1]);
453 buf->lcd_pre_versions[2] = cpu_to_le64(lcd->lcd_pre_versions[2]);
454 buf->lcd_pre_versions[3] = cpu_to_le64(lcd->lcd_pre_versions[3]);
455 buf->lcd_last_epoch = cpu_to_le32(lcd->lcd_last_epoch);
456 buf->lcd_first_epoch = cpu_to_le32(lcd->lcd_first_epoch);
459 static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
461 return (lcd->lcd_last_transno > lcd->lcd_last_close_transno ?
462 lcd->lcd_last_transno : lcd->lcd_last_close_transno);
465 static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
467 return (lcd->lcd_last_xid > lcd->lcd_last_close_xid ?
468 lcd->lcd_last_xid : lcd->lcd_last_close_xid);
471 /****************** superblock additional info *********************/
476 struct lustre_sb_info {
478 struct obd_device *lsi_mgc; /* mgc obd */
479 struct lustre_mount_data *lsi_lmd; /* mount command info */
480 struct lustre_disk_data *lsi_ldd; /* mount info on-disk */
481 struct ll_sb_info *lsi_llsbi; /* add'l client sbi info */
482 struct vfsmount *lsi_srv_mnt; /* the one server mount */
483 cfs_atomic_t lsi_mounts; /* references to the srv_mnt */
484 char lsi_svname[MTI_NAME_MAXLEN];
485 char lsi_osd_type[16];
486 struct backing_dev_info lsi_bdi; /* each client mountpoint needs
487 own backing_dev_info */
490 #define LSI_SERVER 0x00000001
491 #define LSI_UMOUNT_FORCE 0x00000010
492 #define LSI_UMOUNT_FAILOVER 0x00000020
493 #define LSI_BDI_INITIALIZED 0x00000040
494 #define LSI_IR_CAPABLE 0x00000080
496 #define s2lsi(sb) ((struct lustre_sb_info *)((sb)->s_fs_info))
497 #define s2lsi_nocast(sb) ((sb)->s_fs_info)
499 #define get_profile_name(sb) (s2lsi(sb)->lsi_lmd->lmd_profile)
500 #define get_mount_flags(sb) (s2lsi(sb)->lsi_lmd->lmd_flags)
502 #endif /* __KERNEL__ */
504 /****************** mount lookup info *********************/
506 struct lustre_mount_info {
508 struct super_block *lmi_sb;
509 struct vfsmount *lmi_mnt;
510 cfs_list_t lmi_list_chain;
513 /****************** prototypes *********************/
518 void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb,
519 struct vfsmount *mnt));
520 void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb));
523 int lustre_common_put_super(struct super_block *sb);
524 struct lustre_mount_info *server_find_mount_locked(const char *name);
525 struct lustre_mount_info *server_get_mount(const char *name);
526 struct lustre_mount_info *server_get_mount_2(const char *name);
527 int server_put_mount(const char *name, struct vfsmount *mnt);
528 int server_put_mount_2(const char *name, struct vfsmount *mnt);
529 int server_register_target(struct super_block *sb);
530 struct mgs_target_info;
531 int server_mti_print(char *title, struct mgs_target_info *mti);
532 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd);
535 int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id, int type);
541 #endif // _LUSTRE_DISK_H