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 /** all nodes are specified as service nodes */
94 #define LDD_F_NO_PRIMNODE 0x1000
96 #define LDD_F_IR_CAPABLE 0x2000
97 /** the MGS refused to register the target. */
98 #define LDD_F_ERROR 0x4000
100 /* opc for target register */
101 #define LDD_F_OPC_REG 0x10000000
102 #define LDD_F_OPC_UNREG 0x20000000
103 #define LDD_F_OPC_READY 0x40000000
104 #define LDD_F_OPC_MASK 0xf0000000
106 #define LDD_F_ONDISK_MASK (LDD_F_SV_TYPE_MASK)
108 #define LDD_F_MASK 0xFFFF
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)->lsi_flags & LDD_F_SV_TYPE_MDT)
175 #define IS_OST(data) ((data)->lsi_flags & LDD_F_SV_TYPE_OST)
176 #define IS_MGS(data) ((data)->lsi_flags & LDD_F_SV_TYPE_MGS)
177 #define IS_SERVER(data) ((data)->lsi_flags & (LDD_F_SV_TYPE_MGS | \
178 LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST))
179 #define MT_STR(data) mt_str((data)->ldd_mount_type)
181 /* Make the mdt/ost server obd name based on the filesystem name */
182 static inline int server_make_name(__u32 flags, __u16 index, char *fs,
185 if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
186 if (!(flags & LDD_F_SV_ALL))
187 sprintf(name, "%.8s%c%s%04x", fs,
188 (flags & LDD_F_VIRGIN) ? ':' :
189 ((flags & LDD_F_WRITECONF) ? '=' : '-'),
190 (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
192 } else if (flags & LDD_F_SV_TYPE_MGS) {
193 sprintf(name, "MGS");
195 CERROR("unknown server type %#x\n", flags);
201 /* Get the index from the obd name */
202 int server_name2index(char *svname, __u32 *idx, char **endptr);
203 int server_name2svname(char *label, char *svname, char **endptr);
206 /****************** mount command *********************/
208 /* The lmd is only used internally by Lustre; mount simply passes
209 everything as string options */
211 #define LMD_MAGIC 0xbdacbd03
213 /* gleaned from the mount command - no persistent info here */
214 struct lustre_mount_data {
216 __u32 lmd_flags; /* lustre mount flags */
217 int lmd_mgs_failnodes; /* mgs failover node count */
218 int lmd_exclude_count;
219 int lmd_recovery_time_soft;
220 int lmd_recovery_time_hard;
221 char *lmd_dev; /* device name */
222 char *lmd_profile; /* client only */
223 char *lmd_mgssec; /* sptlrpc flavor to mgs */
224 char *lmd_opts; /* lustre mount options (as opposed to
225 _device_ mount options) */
226 char *lmd_params; /* lustre params */
227 __u32 *lmd_exclude; /* array of OSTs to ignore */
228 char *lmd_mgs; /* MGS nid */
229 char *lmd_osd_type; /* OSD type */
232 #define LMD_FLG_SERVER 0x0001 /* Mounting a server */
233 #define LMD_FLG_CLIENT 0x0002 /* Mounting a client */
234 #define LMD_FLG_ABORT_RECOV 0x0008 /* Abort recovery */
235 #define LMD_FLG_NOSVC 0x0010 /* Only start MGS/MGC for servers,
237 #define LMD_FLG_NOMGS 0x0020 /* Only start target for servers, reusing
238 existing MGS services */
239 #define LMD_FLG_WRITECONF 0x0040 /* Rewrite config log */
240 #define LMD_FLG_NOIR 0x0080 /* NO imperative recovery */
241 #define LMD_FLG_NOSCRUB 0x0100 /* Do not trigger scrub automatically */
242 #define LMD_FLG_MGS 0x0200 /* Also start MGS along with server */
243 #define LMD_FLG_IAM 0x0400 /* IAM dir */
244 #define LMD_FLG_NO_PRIMNODE 0x0800 /* all nodes are service nodes */
245 #define LMD_FLG_VIRGIN 0x1000 /* the service registers first time */
247 #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT)
250 /****************** last_rcvd file *********************/
252 /** version recovery epoch */
253 #define LR_EPOCH_BITS 32
254 #define lr_epoch(a) ((a) >> LR_EPOCH_BITS)
255 #define LR_EXPIRE_INTERVALS 16 /**< number of intervals to track transno */
256 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
258 #define LR_SERVER_SIZE 512
259 #define LR_CLIENT_START 8192
260 #define LR_CLIENT_SIZE 128
261 #if LR_CLIENT_START < LR_SERVER_SIZE
262 #error "Can't have LR_CLIENT_START < LR_SERVER_SIZE"
266 * This limit is arbitrary (131072 clients on x86), but it is convenient to use
267 * 2^n * CFS_PAGE_SIZE * 8 for the number of bits that fit an order-n allocation.
268 * If we need more than 131072 clients (order-2 allocation on x86) then this
269 * should become an array of single-page pointers that are allocated on demand.
271 #if (128 * 1024UL) > (CFS_PAGE_SIZE * 8)
272 #define LR_MAX_CLIENTS (128 * 1024UL)
274 #define LR_MAX_CLIENTS (CFS_PAGE_SIZE * 8)
277 /** COMPAT_146: this is an OST (temporary) */
278 #define OBD_COMPAT_OST 0x00000002
279 /** COMPAT_146: this is an MDT (temporary) */
280 #define OBD_COMPAT_MDT 0x00000004
281 /** 2.0 server, interop flag to show server version is changed */
282 #define OBD_COMPAT_20 0x00000008
284 /** MDS handles LOV_OBJID file */
285 #define OBD_ROCOMPAT_LOVOBJID 0x00000001
287 /** OST handles group subdirs */
288 #define OBD_INCOMPAT_GROUPS 0x00000001
289 /** this is an OST */
290 #define OBD_INCOMPAT_OST 0x00000002
291 /** this is an MDT */
292 #define OBD_INCOMPAT_MDT 0x00000004
293 /** common last_rvcd format */
294 #define OBD_INCOMPAT_COMMON_LR 0x00000008
295 /** FID is enabled */
296 #define OBD_INCOMPAT_FID 0x00000010
297 /** Size-on-MDS is enabled */
298 #define OBD_INCOMPAT_SOM 0x00000020
299 /** filesystem using iam format to store directory entries */
300 #define OBD_INCOMPAT_IAM_DIR 0x00000040
301 /** LMA attribute contains per-inode incompatible flags */
302 #define OBD_INCOMPAT_LMA 0x00000080
303 /** lmm_stripe_count has been shrunk from __u32 to __u16 and the remaining 16
304 * bits are now used to store a generation. Once we start changing the layout
305 * and bumping the generation, old versions expecting a 32-bit lmm_stripe_count
306 * will be confused by interpreting stripe_count | gen << 16 as the actual
308 #define OBD_INCOMPAT_LMM_VER 0x00000100
309 /** multiple OI files for MDT */
310 #define OBD_INCOMPAT_MULTI_OI 0x00000200
312 /* Data stored per server at the head of the last_rcvd file. In le32 order.
313 This should be common to filter_internal.h, lustre_mds.h */
314 struct lr_server_data {
315 __u8 lsd_uuid[40]; /* server UUID */
316 __u64 lsd_last_transno; /* last completed transaction ID */
317 __u64 lsd_compat14; /* reserved - compat with old last_rcvd */
318 __u64 lsd_mount_count; /* incarnation number */
319 __u32 lsd_feature_compat; /* compatible feature flags */
320 __u32 lsd_feature_rocompat;/* read-only compatible feature flags */
321 __u32 lsd_feature_incompat;/* incompatible feature flags */
322 __u32 lsd_server_size; /* size of server data area */
323 __u32 lsd_client_start; /* start of per-client data area */
324 __u16 lsd_client_size; /* size of per-client data area */
325 __u16 lsd_subdir_count; /* number of subdirectories for objects */
326 __u64 lsd_catalog_oid; /* recovery catalog object id */
327 __u32 lsd_catalog_ogen; /* recovery catalog inode generation */
328 __u8 lsd_peeruuid[40]; /* UUID of MDS associated with this OST */
329 __u32 lsd_ost_index; /* index number of OST in LOV */
330 __u32 lsd_mdt_index; /* index number of MDT in LMV */
331 __u32 lsd_start_epoch; /* VBR: start epoch from last boot */
332 /** transaction values since lsd_trans_table_time */
333 __u64 lsd_trans_table[LR_EXPIRE_INTERVALS];
334 /** start point of transno table below */
335 __u32 lsd_trans_table_time; /* time of first slot in table above */
336 __u32 lsd_expire_intervals; /* LR_EXPIRE_INTERVALS */
337 __u8 lsd_padding[LR_SERVER_SIZE - 288];
340 /* Data stored per client in the last_rcvd file. In le32 order. */
341 struct lsd_client_data {
342 __u8 lcd_uuid[40]; /* client UUID */
343 __u64 lcd_last_transno; /* last completed transaction ID */
344 __u64 lcd_last_xid; /* xid for the last transaction */
345 __u32 lcd_last_result; /* result from last RPC */
346 __u32 lcd_last_data; /* per-op data (disposition for open &c.) */
347 /* for MDS_CLOSE requests */
348 __u64 lcd_last_close_transno; /* last completed transaction ID */
349 __u64 lcd_last_close_xid; /* xid for the last transaction */
350 __u32 lcd_last_close_result; /* result from last RPC */
351 __u32 lcd_last_close_data; /* per-op data */
352 /* VBR: last versions */
353 __u64 lcd_pre_versions[4];
354 __u32 lcd_last_epoch;
355 /** orphans handling for delayed export rely on that */
356 __u32 lcd_first_epoch;
357 __u8 lcd_padding[LR_CLIENT_SIZE - 128];
360 /* bug20354: the lcd_uuid for export of clients may be wrong */
361 static inline void check_lcd(char *obd_name, int index,
362 struct lsd_client_data *lcd)
364 int length = sizeof(lcd->lcd_uuid);
365 if (strnlen((char*)lcd->lcd_uuid, length) == length) {
366 lcd->lcd_uuid[length - 1] = '\0';
368 LCONSOLE_ERROR("the client UUID (%s) on %s for exports"
369 "stored in last_rcvd(index = %d) is bad!\n",
370 lcd->lcd_uuid, obd_name, index);
374 /* last_rcvd handling */
375 static inline void lsd_le_to_cpu(struct lr_server_data *buf,
376 struct lr_server_data *lsd)
379 memcpy(lsd->lsd_uuid, buf->lsd_uuid, sizeof (lsd->lsd_uuid));
380 lsd->lsd_last_transno = le64_to_cpu(buf->lsd_last_transno);
381 lsd->lsd_compat14 = le64_to_cpu(buf->lsd_compat14);
382 lsd->lsd_mount_count = le64_to_cpu(buf->lsd_mount_count);
383 lsd->lsd_feature_compat = le32_to_cpu(buf->lsd_feature_compat);
384 lsd->lsd_feature_rocompat = le32_to_cpu(buf->lsd_feature_rocompat);
385 lsd->lsd_feature_incompat = le32_to_cpu(buf->lsd_feature_incompat);
386 lsd->lsd_server_size = le32_to_cpu(buf->lsd_server_size);
387 lsd->lsd_client_start = le32_to_cpu(buf->lsd_client_start);
388 lsd->lsd_client_size = le16_to_cpu(buf->lsd_client_size);
389 lsd->lsd_subdir_count = le16_to_cpu(buf->lsd_subdir_count);
390 lsd->lsd_catalog_oid = le64_to_cpu(buf->lsd_catalog_oid);
391 lsd->lsd_catalog_ogen = le32_to_cpu(buf->lsd_catalog_ogen);
392 memcpy(lsd->lsd_peeruuid, buf->lsd_peeruuid, sizeof(lsd->lsd_peeruuid));
393 lsd->lsd_ost_index = le32_to_cpu(buf->lsd_ost_index);
394 lsd->lsd_mdt_index = le32_to_cpu(buf->lsd_mdt_index);
395 lsd->lsd_start_epoch = le32_to_cpu(buf->lsd_start_epoch);
396 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
397 lsd->lsd_trans_table[i] = le64_to_cpu(buf->lsd_trans_table[i]);
398 lsd->lsd_trans_table_time = le32_to_cpu(buf->lsd_trans_table_time);
399 lsd->lsd_expire_intervals = le32_to_cpu(buf->lsd_expire_intervals);
402 static inline void lsd_cpu_to_le(struct lr_server_data *lsd,
403 struct lr_server_data *buf)
406 memcpy(buf->lsd_uuid, lsd->lsd_uuid, sizeof (buf->lsd_uuid));
407 buf->lsd_last_transno = cpu_to_le64(lsd->lsd_last_transno);
408 buf->lsd_compat14 = cpu_to_le64(lsd->lsd_compat14);
409 buf->lsd_mount_count = cpu_to_le64(lsd->lsd_mount_count);
410 buf->lsd_feature_compat = cpu_to_le32(lsd->lsd_feature_compat);
411 buf->lsd_feature_rocompat = cpu_to_le32(lsd->lsd_feature_rocompat);
412 buf->lsd_feature_incompat = cpu_to_le32(lsd->lsd_feature_incompat);
413 buf->lsd_server_size = cpu_to_le32(lsd->lsd_server_size);
414 buf->lsd_client_start = cpu_to_le32(lsd->lsd_client_start);
415 buf->lsd_client_size = cpu_to_le16(lsd->lsd_client_size);
416 buf->lsd_subdir_count = cpu_to_le16(lsd->lsd_subdir_count);
417 buf->lsd_catalog_oid = cpu_to_le64(lsd->lsd_catalog_oid);
418 buf->lsd_catalog_ogen = cpu_to_le32(lsd->lsd_catalog_ogen);
419 memcpy(buf->lsd_peeruuid, lsd->lsd_peeruuid, sizeof(buf->lsd_peeruuid));
420 buf->lsd_ost_index = cpu_to_le32(lsd->lsd_ost_index);
421 buf->lsd_mdt_index = cpu_to_le32(lsd->lsd_mdt_index);
422 buf->lsd_start_epoch = cpu_to_le32(lsd->lsd_start_epoch);
423 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
424 buf->lsd_trans_table[i] = cpu_to_le64(lsd->lsd_trans_table[i]);
425 buf->lsd_trans_table_time = cpu_to_le32(lsd->lsd_trans_table_time);
426 buf->lsd_expire_intervals = cpu_to_le32(lsd->lsd_expire_intervals);
429 static inline void lcd_le_to_cpu(struct lsd_client_data *buf,
430 struct lsd_client_data *lcd)
432 memcpy(lcd->lcd_uuid, buf->lcd_uuid, sizeof (lcd->lcd_uuid));
433 lcd->lcd_last_transno = le64_to_cpu(buf->lcd_last_transno);
434 lcd->lcd_last_xid = le64_to_cpu(buf->lcd_last_xid);
435 lcd->lcd_last_result = le32_to_cpu(buf->lcd_last_result);
436 lcd->lcd_last_data = le32_to_cpu(buf->lcd_last_data);
437 lcd->lcd_last_close_transno = le64_to_cpu(buf->lcd_last_close_transno);
438 lcd->lcd_last_close_xid = le64_to_cpu(buf->lcd_last_close_xid);
439 lcd->lcd_last_close_result = le32_to_cpu(buf->lcd_last_close_result);
440 lcd->lcd_last_close_data = le32_to_cpu(buf->lcd_last_close_data);
441 lcd->lcd_pre_versions[0] = le64_to_cpu(buf->lcd_pre_versions[0]);
442 lcd->lcd_pre_versions[1] = le64_to_cpu(buf->lcd_pre_versions[1]);
443 lcd->lcd_pre_versions[2] = le64_to_cpu(buf->lcd_pre_versions[2]);
444 lcd->lcd_pre_versions[3] = le64_to_cpu(buf->lcd_pre_versions[3]);
445 lcd->lcd_last_epoch = le32_to_cpu(buf->lcd_last_epoch);
446 lcd->lcd_first_epoch = le32_to_cpu(buf->lcd_first_epoch);
449 static inline void lcd_cpu_to_le(struct lsd_client_data *lcd,
450 struct lsd_client_data *buf)
452 memcpy(buf->lcd_uuid, lcd->lcd_uuid, sizeof (lcd->lcd_uuid));
453 buf->lcd_last_transno = cpu_to_le64(lcd->lcd_last_transno);
454 buf->lcd_last_xid = cpu_to_le64(lcd->lcd_last_xid);
455 buf->lcd_last_result = cpu_to_le32(lcd->lcd_last_result);
456 buf->lcd_last_data = cpu_to_le32(lcd->lcd_last_data);
457 buf->lcd_last_close_transno = cpu_to_le64(lcd->lcd_last_close_transno);
458 buf->lcd_last_close_xid = cpu_to_le64(lcd->lcd_last_close_xid);
459 buf->lcd_last_close_result = cpu_to_le32(lcd->lcd_last_close_result);
460 buf->lcd_last_close_data = cpu_to_le32(lcd->lcd_last_close_data);
461 buf->lcd_pre_versions[0] = cpu_to_le64(lcd->lcd_pre_versions[0]);
462 buf->lcd_pre_versions[1] = cpu_to_le64(lcd->lcd_pre_versions[1]);
463 buf->lcd_pre_versions[2] = cpu_to_le64(lcd->lcd_pre_versions[2]);
464 buf->lcd_pre_versions[3] = cpu_to_le64(lcd->lcd_pre_versions[3]);
465 buf->lcd_last_epoch = cpu_to_le32(lcd->lcd_last_epoch);
466 buf->lcd_first_epoch = cpu_to_le32(lcd->lcd_first_epoch);
469 static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
471 return (lcd->lcd_last_transno > lcd->lcd_last_close_transno ?
472 lcd->lcd_last_transno : lcd->lcd_last_close_transno);
475 static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
477 return (lcd->lcd_last_xid > lcd->lcd_last_close_xid ?
478 lcd->lcd_last_xid : lcd->lcd_last_close_xid);
481 /****************** superblock additional info *********************/
486 struct lustre_sb_info {
488 struct obd_device *lsi_mgc; /* mgc obd */
489 struct lustre_mount_data *lsi_lmd; /* mount command info */
490 struct ll_sb_info *lsi_llsbi; /* add'l client sbi info */
491 struct dt_device *lsi_dt_dev; /* dt device to access disk fs*/
492 struct vfsmount *lsi_srv_mnt; /* the one server mount */
493 cfs_atomic_t lsi_mounts; /* references to the srv_mnt */
494 char lsi_svname[MTI_NAME_MAXLEN];
495 char lsi_osd_obdname[64];
496 char lsi_osd_uuid[64];
497 struct obd_export *lsi_osd_exp;
498 char lsi_osd_type[16];
500 struct backing_dev_info lsi_bdi; /* each client mountpoint needs
501 own backing_dev_info */
504 #define LSI_UMOUNT_FAILOVER 0x00200000
505 #define LSI_BDI_INITIALIZED 0x00400000
507 #define s2lsi(sb) ((struct lustre_sb_info *)((sb)->s_fs_info))
508 #define s2lsi_nocast(sb) ((sb)->s_fs_info)
510 #define get_profile_name(sb) (s2lsi(sb)->lsi_lmd->lmd_profile)
511 #define get_mount_flags(sb) (s2lsi(sb)->lsi_lmd->lmd_flags)
513 #endif /* __KERNEL__ */
515 /****************** mount lookup info *********************/
517 struct lustre_mount_info {
519 struct super_block *lmi_sb;
520 struct vfsmount *lmi_mnt;
521 cfs_list_t lmi_list_chain;
524 /* on-disk structure describing local object OIDs storage
525 * the structure to be used with any sequence managed by
526 * local object library */
532 #define LOS_MAGIC 0xdecafbee
534 /****************** prototypes *********************/
539 void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb,
540 struct vfsmount *mnt));
541 void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb));
544 int lustre_common_put_super(struct super_block *sb);
545 struct lustre_mount_info *server_find_mount_locked(const char *name);
546 struct lustre_mount_info *server_get_mount(const char *name);
547 struct lustre_mount_info *server_get_mount_2(const char *name);
548 int server_put_mount(const char *name, struct vfsmount *mnt);
549 int server_put_mount_2(const char *name, struct vfsmount *mnt);
550 struct mgs_target_info;
551 int server_mti_print(char *title, struct mgs_target_info *mti);
552 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd);
555 int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id, int type);
561 #endif // _LUSTRE_DISK_H