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 #define LDD_INCOMPAT_SUPP 0
134 #define LDD_ROCOMPAT_SUPP 0
136 #define LDD_MAGIC 0x1dd00001
138 /* On-disk configuration file. In host-endian order. */
139 struct lustre_disk_data {
141 __u32 ldd_feature_compat; /* compatible feature flags */
142 __u32 ldd_feature_rocompat;/* read-only compatible feature flags */
143 __u32 ldd_feature_incompat;/* incompatible feature flags */
145 __u32 ldd_config_ver; /* config rewrite count - not used */
146 __u32 ldd_flags; /* LDD_SV_TYPE */
147 __u32 ldd_svindex; /* server index (0001), must match
149 __u32 ldd_mount_type; /* target fs type LDD_MT_* */
150 char ldd_fsname[64]; /* filesystem this server is part of,
152 char ldd_svname[64]; /* this server's name (lustre-mdt0001)*/
153 __u8 ldd_uuid[40]; /* server UUID (COMPAT_146) */
155 /*200*/ char ldd_userdata[1024 - 200]; /* arbitrary user string */
156 /*1024*/__u8 ldd_padding[4096 - 1024];
157 /*4096*/char ldd_mount_opts[4096]; /* target fs mount opts */
158 /*8192*/char ldd_params[4096]; /* key=value pairs */
161 #define IS_MDT(data) ((data)->ldd_flags & LDD_F_SV_TYPE_MDT)
162 #define IS_OST(data) ((data)->ldd_flags & LDD_F_SV_TYPE_OST)
163 #define IS_MGS(data) ((data)->ldd_flags & LDD_F_SV_TYPE_MGS)
164 #define MT_STR(data) mt_str((data)->ldd_mount_type)
166 /* Make the mdt/ost server obd name based on the filesystem name */
167 static inline int server_make_name(__u32 flags, __u16 index, char *fs,
170 if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
171 if (!(flags & LDD_F_SV_ALL))
172 sprintf(name, "%.8s-%s%04x", fs,
173 (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
175 } else if (flags & LDD_F_SV_TYPE_MGS) {
176 sprintf(name, "MGS");
178 CERROR("unknown server type %#x\n", flags);
184 /* Get the index from the obd name */
185 int server_name2index(char *svname, __u32 *idx, char **endptr);
188 /****************** mount command *********************/
190 /* The lmd is only used internally by Lustre; mount simply passes
191 everything as string options */
193 #define LMD_MAGIC 0xbdacbd03
195 /* gleaned from the mount command - no persistent info here */
196 struct lustre_mount_data {
198 __u32 lmd_flags; /* lustre mount flags */
199 int lmd_mgs_failnodes; /* mgs failover node count */
200 int lmd_exclude_count;
201 int lmd_recovery_time_soft;
202 int lmd_recovery_time_hard;
203 char *lmd_dev; /* device name */
204 char *lmd_profile; /* client only */
205 char *lmd_mgssec; /* sptlrpc flavor to mgs */
206 char *lmd_opts; /* lustre mount options (as opposed to
207 _device_ mount options) */
208 __u32 *lmd_exclude; /* array of OSTs to ignore */
211 #define LMD_FLG_SERVER 0x0001 /* Mounting a server */
212 #define LMD_FLG_CLIENT 0x0002 /* Mounting a client */
213 #define LMD_FLG_ABORT_RECOV 0x0008 /* Abort recovery */
214 #define LMD_FLG_NOSVC 0x0010 /* Only start MGS/MGC for servers,
216 #define LMD_FLG_NOMGS 0x0020 /* Only start target for servers, reusing
217 existing MGS services */
218 #define LMD_FLG_WRITECONF 0x0040 /* Rewrite config log */
219 #define LMD_FLG_NOIR 0x0080 /* NO imperative recovery */
220 #define LMD_FLG_NOSCRUB 0x0100 /* Do not trigger scrub automatically */
222 #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT)
225 /****************** last_rcvd file *********************/
227 /** version recovery epoch */
228 #define LR_EPOCH_BITS 32
229 #define lr_epoch(a) ((a) >> LR_EPOCH_BITS)
230 #define LR_EXPIRE_INTERVALS 16 /**< number of intervals to track transno */
231 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
233 #define LR_SERVER_SIZE 512
234 #define LR_CLIENT_START 8192
235 #define LR_CLIENT_SIZE 128
236 #if LR_CLIENT_START < LR_SERVER_SIZE
237 #error "Can't have LR_CLIENT_START < LR_SERVER_SIZE"
241 * This limit is arbitrary (131072 clients on x86), but it is convenient to use
242 * 2^n * CFS_PAGE_SIZE * 8 for the number of bits that fit an order-n allocation.
243 * If we need more than 131072 clients (order-2 allocation on x86) then this
244 * should become an array of single-page pointers that are allocated on demand.
246 #if (128 * 1024UL) > (CFS_PAGE_SIZE * 8)
247 #define LR_MAX_CLIENTS (128 * 1024UL)
249 #define LR_MAX_CLIENTS (CFS_PAGE_SIZE * 8)
252 /** COMPAT_146: this is an OST (temporary) */
253 #define OBD_COMPAT_OST 0x00000002
254 /** COMPAT_146: this is an MDT (temporary) */
255 #define OBD_COMPAT_MDT 0x00000004
256 /** 2.0 server, interop flag to show server version is changed */
257 #define OBD_COMPAT_20 0x00000008
259 /** MDS handles LOV_OBJID file */
260 #define OBD_ROCOMPAT_LOVOBJID 0x00000001
262 /** OST handles group subdirs */
263 #define OBD_INCOMPAT_GROUPS 0x00000001
264 /** this is an OST */
265 #define OBD_INCOMPAT_OST 0x00000002
266 /** this is an MDT */
267 #define OBD_INCOMPAT_MDT 0x00000004
268 /** common last_rvcd format */
269 #define OBD_INCOMPAT_COMMON_LR 0x00000008
270 /** FID is enabled */
271 #define OBD_INCOMPAT_FID 0x00000010
272 /** Size-on-MDS is enabled */
273 #define OBD_INCOMPAT_SOM 0x00000020
274 /** filesystem using iam format to store directory entries */
275 #define OBD_INCOMPAT_IAM_DIR 0x00000040
276 /** LMA attribute contains per-inode incompatible flags */
277 #define OBD_INCOMPAT_LMA 0x00000080
278 /** lmm_stripe_count has been shrunk from __u32 to __u16 and the remaining 16
279 * bits are now used to store a generation. Once we start changing the layout
280 * and bumping the generation, old versions expecting a 32-bit lmm_stripe_count
281 * will be confused by interpreting stripe_count | gen << 16 as the actual
283 #define OBD_INCOMPAT_LMM_VER 0x00000100
284 /** multiple OI files for MDT */
285 #define OBD_INCOMPAT_MULTI_OI 0x00000200
287 /* Data stored per server at the head of the last_rcvd file. In le32 order.
288 This should be common to filter_internal.h, lustre_mds.h */
289 struct lr_server_data {
290 __u8 lsd_uuid[40]; /* server UUID */
291 __u64 lsd_last_transno; /* last completed transaction ID */
292 __u64 lsd_compat14; /* reserved - compat with old last_rcvd */
293 __u64 lsd_mount_count; /* incarnation number */
294 __u32 lsd_feature_compat; /* compatible feature flags */
295 __u32 lsd_feature_rocompat;/* read-only compatible feature flags */
296 __u32 lsd_feature_incompat;/* incompatible feature flags */
297 __u32 lsd_server_size; /* size of server data area */
298 __u32 lsd_client_start; /* start of per-client data area */
299 __u16 lsd_client_size; /* size of per-client data area */
300 __u16 lsd_subdir_count; /* number of subdirectories for objects */
301 __u64 lsd_catalog_oid; /* recovery catalog object id */
302 __u32 lsd_catalog_ogen; /* recovery catalog inode generation */
303 __u8 lsd_peeruuid[40]; /* UUID of MDS associated with this OST */
304 __u32 lsd_ost_index; /* index number of OST in LOV */
305 __u32 lsd_mdt_index; /* index number of MDT in LMV */
306 __u32 lsd_start_epoch; /* VBR: start epoch from last boot */
307 /** transaction values since lsd_trans_table_time */
308 __u64 lsd_trans_table[LR_EXPIRE_INTERVALS];
309 /** start point of transno table below */
310 __u32 lsd_trans_table_time; /* time of first slot in table above */
311 __u32 lsd_expire_intervals; /* LR_EXPIRE_INTERVALS */
312 __u8 lsd_padding[LR_SERVER_SIZE - 288];
315 /* Data stored per client in the last_rcvd file. In le32 order. */
316 struct lsd_client_data {
317 __u8 lcd_uuid[40]; /* client UUID */
318 __u64 lcd_last_transno; /* last completed transaction ID */
319 __u64 lcd_last_xid; /* xid for the last transaction */
320 __u32 lcd_last_result; /* result from last RPC */
321 __u32 lcd_last_data; /* per-op data (disposition for open &c.) */
322 /* for MDS_CLOSE requests */
323 __u64 lcd_last_close_transno; /* last completed transaction ID */
324 __u64 lcd_last_close_xid; /* xid for the last transaction */
325 __u32 lcd_last_close_result; /* result from last RPC */
326 __u32 lcd_last_close_data; /* per-op data */
327 /* VBR: last versions */
328 __u64 lcd_pre_versions[4];
329 __u32 lcd_last_epoch;
330 /** orphans handling for delayed export rely on that */
331 __u32 lcd_first_epoch;
332 __u8 lcd_padding[LR_CLIENT_SIZE - 128];
335 /* bug20354: the lcd_uuid for export of clients may be wrong */
336 static inline void check_lcd(char *obd_name, int index,
337 struct lsd_client_data *lcd)
339 int length = sizeof(lcd->lcd_uuid);
340 if (strnlen((char*)lcd->lcd_uuid, length) == length) {
341 lcd->lcd_uuid[length - 1] = '\0';
343 LCONSOLE_ERROR("the client UUID (%s) on %s for exports"
344 "stored in last_rcvd(index = %d) is bad!\n",
345 lcd->lcd_uuid, obd_name, index);
349 /* last_rcvd handling */
350 static inline void lsd_le_to_cpu(struct lr_server_data *buf,
351 struct lr_server_data *lsd)
354 memcpy(lsd->lsd_uuid, buf->lsd_uuid, sizeof (lsd->lsd_uuid));
355 lsd->lsd_last_transno = le64_to_cpu(buf->lsd_last_transno);
356 lsd->lsd_compat14 = le64_to_cpu(buf->lsd_compat14);
357 lsd->lsd_mount_count = le64_to_cpu(buf->lsd_mount_count);
358 lsd->lsd_feature_compat = le32_to_cpu(buf->lsd_feature_compat);
359 lsd->lsd_feature_rocompat = le32_to_cpu(buf->lsd_feature_rocompat);
360 lsd->lsd_feature_incompat = le32_to_cpu(buf->lsd_feature_incompat);
361 lsd->lsd_server_size = le32_to_cpu(buf->lsd_server_size);
362 lsd->lsd_client_start = le32_to_cpu(buf->lsd_client_start);
363 lsd->lsd_client_size = le16_to_cpu(buf->lsd_client_size);
364 lsd->lsd_subdir_count = le16_to_cpu(buf->lsd_subdir_count);
365 lsd->lsd_catalog_oid = le64_to_cpu(buf->lsd_catalog_oid);
366 lsd->lsd_catalog_ogen = le32_to_cpu(buf->lsd_catalog_ogen);
367 memcpy(lsd->lsd_peeruuid, buf->lsd_peeruuid, sizeof(lsd->lsd_peeruuid));
368 lsd->lsd_ost_index = le32_to_cpu(buf->lsd_ost_index);
369 lsd->lsd_mdt_index = le32_to_cpu(buf->lsd_mdt_index);
370 lsd->lsd_start_epoch = le32_to_cpu(buf->lsd_start_epoch);
371 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
372 lsd->lsd_trans_table[i] = le64_to_cpu(buf->lsd_trans_table[i]);
373 lsd->lsd_trans_table_time = le32_to_cpu(buf->lsd_trans_table_time);
374 lsd->lsd_expire_intervals = le32_to_cpu(buf->lsd_expire_intervals);
377 static inline void lsd_cpu_to_le(struct lr_server_data *lsd,
378 struct lr_server_data *buf)
381 memcpy(buf->lsd_uuid, lsd->lsd_uuid, sizeof (buf->lsd_uuid));
382 buf->lsd_last_transno = cpu_to_le64(lsd->lsd_last_transno);
383 buf->lsd_compat14 = cpu_to_le64(lsd->lsd_compat14);
384 buf->lsd_mount_count = cpu_to_le64(lsd->lsd_mount_count);
385 buf->lsd_feature_compat = cpu_to_le32(lsd->lsd_feature_compat);
386 buf->lsd_feature_rocompat = cpu_to_le32(lsd->lsd_feature_rocompat);
387 buf->lsd_feature_incompat = cpu_to_le32(lsd->lsd_feature_incompat);
388 buf->lsd_server_size = cpu_to_le32(lsd->lsd_server_size);
389 buf->lsd_client_start = cpu_to_le32(lsd->lsd_client_start);
390 buf->lsd_client_size = cpu_to_le16(lsd->lsd_client_size);
391 buf->lsd_subdir_count = cpu_to_le16(lsd->lsd_subdir_count);
392 buf->lsd_catalog_oid = cpu_to_le64(lsd->lsd_catalog_oid);
393 buf->lsd_catalog_ogen = cpu_to_le32(lsd->lsd_catalog_ogen);
394 memcpy(buf->lsd_peeruuid, lsd->lsd_peeruuid, sizeof(buf->lsd_peeruuid));
395 buf->lsd_ost_index = cpu_to_le32(lsd->lsd_ost_index);
396 buf->lsd_mdt_index = cpu_to_le32(lsd->lsd_mdt_index);
397 buf->lsd_start_epoch = cpu_to_le32(lsd->lsd_start_epoch);
398 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
399 buf->lsd_trans_table[i] = cpu_to_le64(lsd->lsd_trans_table[i]);
400 buf->lsd_trans_table_time = cpu_to_le32(lsd->lsd_trans_table_time);
401 buf->lsd_expire_intervals = cpu_to_le32(lsd->lsd_expire_intervals);
404 static inline void lcd_le_to_cpu(struct lsd_client_data *buf,
405 struct lsd_client_data *lcd)
407 memcpy(lcd->lcd_uuid, buf->lcd_uuid, sizeof (lcd->lcd_uuid));
408 lcd->lcd_last_transno = le64_to_cpu(buf->lcd_last_transno);
409 lcd->lcd_last_xid = le64_to_cpu(buf->lcd_last_xid);
410 lcd->lcd_last_result = le32_to_cpu(buf->lcd_last_result);
411 lcd->lcd_last_data = le32_to_cpu(buf->lcd_last_data);
412 lcd->lcd_last_close_transno = le64_to_cpu(buf->lcd_last_close_transno);
413 lcd->lcd_last_close_xid = le64_to_cpu(buf->lcd_last_close_xid);
414 lcd->lcd_last_close_result = le32_to_cpu(buf->lcd_last_close_result);
415 lcd->lcd_last_close_data = le32_to_cpu(buf->lcd_last_close_data);
416 lcd->lcd_pre_versions[0] = le64_to_cpu(buf->lcd_pre_versions[0]);
417 lcd->lcd_pre_versions[1] = le64_to_cpu(buf->lcd_pre_versions[1]);
418 lcd->lcd_pre_versions[2] = le64_to_cpu(buf->lcd_pre_versions[2]);
419 lcd->lcd_pre_versions[3] = le64_to_cpu(buf->lcd_pre_versions[3]);
420 lcd->lcd_last_epoch = le32_to_cpu(buf->lcd_last_epoch);
421 lcd->lcd_first_epoch = le32_to_cpu(buf->lcd_first_epoch);
424 static inline void lcd_cpu_to_le(struct lsd_client_data *lcd,
425 struct lsd_client_data *buf)
427 memcpy(buf->lcd_uuid, lcd->lcd_uuid, sizeof (lcd->lcd_uuid));
428 buf->lcd_last_transno = cpu_to_le64(lcd->lcd_last_transno);
429 buf->lcd_last_xid = cpu_to_le64(lcd->lcd_last_xid);
430 buf->lcd_last_result = cpu_to_le32(lcd->lcd_last_result);
431 buf->lcd_last_data = cpu_to_le32(lcd->lcd_last_data);
432 buf->lcd_last_close_transno = cpu_to_le64(lcd->lcd_last_close_transno);
433 buf->lcd_last_close_xid = cpu_to_le64(lcd->lcd_last_close_xid);
434 buf->lcd_last_close_result = cpu_to_le32(lcd->lcd_last_close_result);
435 buf->lcd_last_close_data = cpu_to_le32(lcd->lcd_last_close_data);
436 buf->lcd_pre_versions[0] = cpu_to_le64(lcd->lcd_pre_versions[0]);
437 buf->lcd_pre_versions[1] = cpu_to_le64(lcd->lcd_pre_versions[1]);
438 buf->lcd_pre_versions[2] = cpu_to_le64(lcd->lcd_pre_versions[2]);
439 buf->lcd_pre_versions[3] = cpu_to_le64(lcd->lcd_pre_versions[3]);
440 buf->lcd_last_epoch = cpu_to_le32(lcd->lcd_last_epoch);
441 buf->lcd_first_epoch = cpu_to_le32(lcd->lcd_first_epoch);
444 static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
446 return (lcd->lcd_last_transno > lcd->lcd_last_close_transno ?
447 lcd->lcd_last_transno : lcd->lcd_last_close_transno);
450 static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
452 return (lcd->lcd_last_xid > lcd->lcd_last_close_xid ?
453 lcd->lcd_last_xid : lcd->lcd_last_close_xid);
456 /****************** superblock additional info *********************/
461 struct lustre_sb_info {
463 struct obd_device *lsi_mgc; /* mgc obd */
464 struct lustre_mount_data *lsi_lmd; /* mount command info */
465 struct lustre_disk_data *lsi_ldd; /* mount info on-disk */
466 struct ll_sb_info *lsi_llsbi; /* add'l client sbi info */
467 struct vfsmount *lsi_srv_mnt; /* the one server mount */
468 cfs_atomic_t lsi_mounts; /* references to the srv_mnt */
469 struct backing_dev_info lsi_bdi; /* each client mountpoint needs
470 own backing_dev_info */
473 #define LSI_SERVER 0x00000001
474 #define LSI_UMOUNT_FORCE 0x00000010
475 #define LSI_UMOUNT_FAILOVER 0x00000020
476 #define LSI_BDI_INITIALIZED 0x00000040
477 #define LSI_IR_CAPABLE 0x00000080
479 #define s2lsi(sb) ((struct lustre_sb_info *)((sb)->s_fs_info))
480 #define s2lsi_nocast(sb) ((sb)->s_fs_info)
482 #define get_profile_name(sb) (s2lsi(sb)->lsi_lmd->lmd_profile)
483 #define get_mount_flags(sb) (s2lsi(sb)->lsi_lmd->lmd_flags)
485 #endif /* __KERNEL__ */
487 /****************** mount lookup info *********************/
489 struct lustre_mount_info {
491 struct super_block *lmi_sb;
492 struct vfsmount *lmi_mnt;
493 cfs_list_t lmi_list_chain;
496 /****************** prototypes *********************/
501 void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb,
502 struct vfsmount *mnt));
503 void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb));
506 int lustre_common_put_super(struct super_block *sb);
507 struct lustre_mount_info *server_find_mount_locked(const char *name);
508 struct lustre_mount_info *server_get_mount(const char *name);
509 struct lustre_mount_info *server_get_mount_2(const char *name);
510 int server_put_mount(const char *name, struct vfsmount *mnt);
511 int server_put_mount_2(const char *name, struct vfsmount *mnt);
512 int server_register_target(struct super_block *sb);
513 struct mgs_target_info;
514 int server_mti_print(char *title, struct mgs_target_info *mti);
515 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd);
518 int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id, int type);
524 #endif // _LUSTRE_DISK_H