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, 2014, Intel Corporation.
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 LOV_OBJSEQ "lov_objseq"
64 #define HEALTH_CHECK "health_check"
65 #define CAPA_KEYS "capa_keys"
66 #define CHANGELOG_USERS "changelog_users"
67 #define MGS_NIDTBL_DIR "NIDTBL_VERSIONS"
68 #define QMT_DIR "quota_master"
69 #define QSD_DIR "quota_slave"
70 #define HSM_ACTIONS "hsm_actions"
71 #define LFSCK_DIR "LFSCK"
72 #define LFSCK_BOOKMARK "lfsck_bookmark"
73 #define LFSCK_LAYOUT "lfsck_layout"
74 #define LFSCK_NAMESPACE "lfsck_namespace"
76 /****************** persistent mount data *********************/
78 #define LDD_F_SV_TYPE_MDT 0x0001
79 #define LDD_F_SV_TYPE_OST 0x0002
80 #define LDD_F_SV_TYPE_MGS 0x0004
81 #define LDD_F_SV_TYPE_MASK (LDD_F_SV_TYPE_MDT | \
84 #define LDD_F_SV_ALL 0x0008
85 /** need an index assignment */
86 #define LDD_F_NEED_INDEX 0x0010
87 /** never registered */
88 #define LDD_F_VIRGIN 0x0020
89 /** update the config logs for this server */
90 #define LDD_F_UPDATE 0x0040
91 /** rewrite the LDD */
92 #define LDD_F_REWRITE_LDD 0x0080
93 /** regenerate config logs for this fs or server */
94 #define LDD_F_WRITECONF 0x0100
96 #define LDD_F_UPGRADE14 0x0200
97 /** process as lctl conf_param */
98 #define LDD_F_PARAM 0x0400
99 /** all nodes are specified as service nodes */
100 #define LDD_F_NO_PRIMNODE 0x1000
101 /** IR enable flag */
102 #define LDD_F_IR_CAPABLE 0x2000
103 /** the MGS refused to register the target. */
104 #define LDD_F_ERROR 0x4000
105 /** process at lctl conf_param */
106 #define LDD_F_PARAM2 0x8000
108 /* opc for target register */
109 #define LDD_F_OPC_REG 0x10000000
110 #define LDD_F_OPC_UNREG 0x20000000
111 #define LDD_F_OPC_READY 0x40000000
112 #define LDD_F_OPC_MASK 0xf0000000
114 #define LDD_F_ONDISK_MASK (LDD_F_SV_TYPE_MASK)
116 #define LDD_F_MASK 0xFFFF
118 enum ldd_mount_type {
128 static inline char *mt_str(enum ldd_mount_type mt)
130 static char *mount_type_string[] = {
138 return mount_type_string[mt];
141 static inline char *mt_type(enum ldd_mount_type mt)
143 static char *mount_type_string[] = {
151 return mount_type_string[mt];
154 #define LDD_INCOMPAT_SUPP 0
155 #define LDD_ROCOMPAT_SUPP 0
157 #define LDD_MAGIC 0x1dd00001
159 /* On-disk configuration file. In host-endian order. */
160 struct lustre_disk_data {
162 __u32 ldd_feature_compat; /* compatible feature flags */
163 __u32 ldd_feature_rocompat;/* read-only compatible feature flags */
164 __u32 ldd_feature_incompat;/* incompatible feature flags */
166 __u32 ldd_config_ver; /* config rewrite count - not used */
167 __u32 ldd_flags; /* LDD_SV_TYPE */
168 __u32 ldd_svindex; /* server index (0001), must match
170 __u32 ldd_mount_type; /* target fs type LDD_MT_* */
171 char ldd_fsname[64]; /* filesystem this server is part of,
173 char ldd_svname[64]; /* this server's name (lustre-mdt0001)*/
174 __u8 ldd_uuid[40]; /* server UUID (COMPAT_146) */
176 /*200*/ char ldd_userdata[1024 - 200]; /* arbitrary user string */
177 /*1024*/__u8 ldd_padding[4096 - 1024];
178 /*4096*/char ldd_mount_opts[4096]; /* target fs mount opts */
179 /*8192*/char ldd_params[4096]; /* key=value pairs */
183 #define IS_MDT(data) ((data)->lsi_flags & LDD_F_SV_TYPE_MDT)
184 #define IS_OST(data) ((data)->lsi_flags & LDD_F_SV_TYPE_OST)
185 #define IS_MGS(data) ((data)->lsi_flags & LDD_F_SV_TYPE_MGS)
186 #define IS_SERVER(data) ((data)->lsi_flags & (LDD_F_SV_TYPE_MGS | \
187 LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST))
188 #define MT_STR(data) mt_str((data)->ldd_mount_type)
190 /* Make the mdt/ost server obd name based on the filesystem name */
191 static inline int server_make_name(__u32 flags, __u16 index, char *fs,
194 if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
195 if (!(flags & LDD_F_SV_ALL))
196 sprintf(name, "%.8s%c%s%04x", fs,
197 (flags & LDD_F_VIRGIN) ? ':' :
198 ((flags & LDD_F_WRITECONF) ? '=' : '-'),
199 (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
201 } else if (flags & LDD_F_SV_TYPE_MGS) {
202 sprintf(name, "MGS");
204 CERROR("unknown server type %#x\n", flags);
210 /****************** mount command *********************/
212 /* The lmd is only used internally by Lustre; mount simply passes
213 everything as string options */
215 #define LMD_MAGIC 0xbdacbd03
216 #define LMD_PARAMS_MAXLEN 4096
218 /* gleaned from the mount command - no persistent info here */
219 struct lustre_mount_data {
221 __u32 lmd_flags; /* lustre mount flags */
222 int lmd_mgs_failnodes; /* mgs failover node count */
223 int lmd_exclude_count;
224 int lmd_recovery_time_soft;
225 int lmd_recovery_time_hard;
226 char *lmd_dev; /* device name */
227 char *lmd_profile; /* client only */
228 char *lmd_mgssec; /* sptlrpc flavor to mgs */
229 char *lmd_opts; /* lustre mount options (as opposed to
230 _device_ mount options) */
231 char *lmd_params; /* lustre params */
232 __u32 *lmd_exclude; /* array of OSTs to ignore */
233 char *lmd_mgs; /* MGS nid */
234 char *lmd_osd_type; /* OSD type */
237 #define LMD_FLG_SERVER 0x0001 /* Mounting a server */
238 #define LMD_FLG_CLIENT 0x0002 /* Mounting a client */
239 #define LMD_FLG_ABORT_RECOV 0x0008 /* Abort recovery */
240 #define LMD_FLG_NOSVC 0x0010 /* Only start MGS/MGC for servers,
242 #define LMD_FLG_NOMGS 0x0020 /* Only start target for servers, reusing
243 existing MGS services */
244 #define LMD_FLG_WRITECONF 0x0040 /* Rewrite config log */
245 #define LMD_FLG_NOIR 0x0080 /* NO imperative recovery */
246 #define LMD_FLG_NOSCRUB 0x0100 /* Do not trigger scrub automatically */
247 #define LMD_FLG_MGS 0x0200 /* Also start MGS along with server */
248 #define LMD_FLG_IAM 0x0400 /* IAM dir */
249 #define LMD_FLG_NO_PRIMNODE 0x0800 /* all nodes are service nodes */
250 #define LMD_FLG_VIRGIN 0x1000 /* the service registers first time */
251 #define LMD_FLG_UPDATE 0x2000 /* update parameters */
252 #define LMD_FLG_HSM 0x4000 /* Start coordinator */
254 #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT)
257 /****************** last_rcvd file *********************/
259 /** version recovery epoch */
260 #define LR_EPOCH_BITS 32
261 #define lr_epoch(a) ((a) >> LR_EPOCH_BITS)
262 #define LR_EXPIRE_INTERVALS 16 /**< number of intervals to track transno */
263 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
265 #define LR_SERVER_SIZE 512
266 #define LR_CLIENT_START 8192
267 #define LR_CLIENT_SIZE 128
268 #if LR_CLIENT_START < LR_SERVER_SIZE
269 #error "Can't have LR_CLIENT_START < LR_SERVER_SIZE"
273 * This limit is arbitrary (131072 clients on x86), but it is convenient to use
274 * 2^n * PAGE_CACHE_SIZE * 8 for the number of bits that fit an order-n allocation.
275 * If we need more than 131072 clients (order-2 allocation on x86) then this
276 * should become an array of single-page pointers that are allocated on demand.
278 #if (128 * 1024UL) > (PAGE_CACHE_SIZE * 8)
279 #define LR_MAX_CLIENTS (128 * 1024UL)
281 #define LR_MAX_CLIENTS (PAGE_CACHE_SIZE * 8)
284 /** COMPAT_146: this is an OST (temporary) */
285 #define OBD_COMPAT_OST 0x00000002
286 /** COMPAT_146: this is an MDT (temporary) */
287 #define OBD_COMPAT_MDT 0x00000004
288 /** 2.0 server, interop flag to show server version is changed */
289 #define OBD_COMPAT_20 0x00000008
291 /** MDS handles LOV_OBJID file */
292 #define OBD_ROCOMPAT_LOVOBJID 0x00000001
294 /** OST handles group subdirs */
295 #define OBD_INCOMPAT_GROUPS 0x00000001
296 /** this is an OST */
297 #define OBD_INCOMPAT_OST 0x00000002
298 /** this is an MDT */
299 #define OBD_INCOMPAT_MDT 0x00000004
300 /** common last_rvcd format */
301 #define OBD_INCOMPAT_COMMON_LR 0x00000008
302 /** FID is enabled */
303 #define OBD_INCOMPAT_FID 0x00000010
304 /** Size-on-MDS is enabled */
305 #define OBD_INCOMPAT_SOM 0x00000020
306 /** filesystem using iam format to store directory entries */
307 #define OBD_INCOMPAT_IAM_DIR 0x00000040
308 /** LMA attribute contains per-inode incompatible flags */
309 #define OBD_INCOMPAT_LMA 0x00000080
310 /** lmm_stripe_count has been shrunk from __u32 to __u16 and the remaining 16
311 * bits are now used to store a generation. Once we start changing the layout
312 * and bumping the generation, old versions expecting a 32-bit lmm_stripe_count
313 * will be confused by interpreting stripe_count | gen << 16 as the actual
315 #define OBD_INCOMPAT_LMM_VER 0x00000100
316 /** multiple OI files for MDT */
317 #define OBD_INCOMPAT_MULTI_OI 0x00000200
319 /* Data stored per server at the head of the last_rcvd file. In le32 order.
320 This should be common to filter_internal.h, lustre_mds.h */
321 struct lr_server_data {
322 __u8 lsd_uuid[40]; /* server UUID */
323 __u64 lsd_last_transno; /* last completed transaction ID */
324 __u64 lsd_compat14; /* reserved - compat with old last_rcvd */
325 __u64 lsd_mount_count; /* incarnation number */
326 __u32 lsd_feature_compat; /* compatible feature flags */
327 __u32 lsd_feature_rocompat;/* read-only compatible feature flags */
328 __u32 lsd_feature_incompat;/* incompatible feature flags */
329 __u32 lsd_server_size; /* size of server data area */
330 __u32 lsd_client_start; /* start of per-client data area */
331 __u16 lsd_client_size; /* size of per-client data area */
332 __u16 lsd_subdir_count; /* number of subdirectories for objects */
333 __u64 lsd_catalog_oid; /* recovery catalog object id */
334 __u32 lsd_catalog_ogen; /* recovery catalog inode generation */
335 __u8 lsd_peeruuid[40]; /* UUID of MDS associated with this OST */
336 __u32 lsd_osd_index; /* index number of OST in LOV */
337 __u32 lsd_padding1; /* was lsd_mdt_index, unused in 2.4.0 */
338 __u32 lsd_start_epoch; /* VBR: start epoch from last boot */
339 /** transaction values since lsd_trans_table_time */
340 __u64 lsd_trans_table[LR_EXPIRE_INTERVALS];
341 /** start point of transno table below */
342 __u32 lsd_trans_table_time; /* time of first slot in table above */
343 __u32 lsd_expire_intervals; /* LR_EXPIRE_INTERVALS */
344 __u8 lsd_padding[LR_SERVER_SIZE - 288];
347 /* Data stored per client in the last_rcvd file. In le32 order. */
348 struct lsd_client_data {
349 __u8 lcd_uuid[40]; /* client UUID */
350 __u64 lcd_last_transno; /* last completed transaction ID */
351 __u64 lcd_last_xid; /* xid for the last transaction */
352 __u32 lcd_last_result; /* result from last RPC */
353 __u32 lcd_last_data; /* per-op data (disposition for open &c.) */
354 /* for MDS_CLOSE requests */
355 __u64 lcd_last_close_transno; /* last completed transaction ID */
356 __u64 lcd_last_close_xid; /* xid for the last transaction */
357 __u32 lcd_last_close_result; /* result from last RPC */
358 __u32 lcd_last_close_data; /* per-op data */
359 /* VBR: last versions */
360 __u64 lcd_pre_versions[4];
361 __u32 lcd_last_epoch;
362 /** orphans handling for delayed export rely on that */
363 __u32 lcd_first_epoch;
364 __u8 lcd_padding[LR_CLIENT_SIZE - 128];
367 /* bug20354: the lcd_uuid for export of clients may be wrong */
368 static inline void check_lcd(char *obd_name, int index,
369 struct lsd_client_data *lcd)
371 size_t length = sizeof(lcd->lcd_uuid);
372 if (strnlen((char*)lcd->lcd_uuid, length) == length) {
373 lcd->lcd_uuid[length - 1] = '\0';
375 LCONSOLE_ERROR("the client UUID (%s) on %s for exports"
376 "stored in last_rcvd(index = %d) is bad!\n",
377 lcd->lcd_uuid, obd_name, index);
381 /* last_rcvd handling */
382 static inline void lsd_le_to_cpu(struct lr_server_data *buf,
383 struct lr_server_data *lsd)
386 memcpy(lsd->lsd_uuid, buf->lsd_uuid, sizeof(lsd->lsd_uuid));
387 lsd->lsd_last_transno = le64_to_cpu(buf->lsd_last_transno);
388 lsd->lsd_compat14 = le64_to_cpu(buf->lsd_compat14);
389 lsd->lsd_mount_count = le64_to_cpu(buf->lsd_mount_count);
390 lsd->lsd_feature_compat = le32_to_cpu(buf->lsd_feature_compat);
391 lsd->lsd_feature_rocompat = le32_to_cpu(buf->lsd_feature_rocompat);
392 lsd->lsd_feature_incompat = le32_to_cpu(buf->lsd_feature_incompat);
393 lsd->lsd_server_size = le32_to_cpu(buf->lsd_server_size);
394 lsd->lsd_client_start = le32_to_cpu(buf->lsd_client_start);
395 lsd->lsd_client_size = le16_to_cpu(buf->lsd_client_size);
396 lsd->lsd_subdir_count = le16_to_cpu(buf->lsd_subdir_count);
397 lsd->lsd_catalog_oid = le64_to_cpu(buf->lsd_catalog_oid);
398 lsd->lsd_catalog_ogen = le32_to_cpu(buf->lsd_catalog_ogen);
399 memcpy(lsd->lsd_peeruuid, buf->lsd_peeruuid, sizeof(lsd->lsd_peeruuid));
400 lsd->lsd_osd_index = le32_to_cpu(buf->lsd_osd_index);
401 lsd->lsd_padding1 = le32_to_cpu(buf->lsd_padding1);
402 lsd->lsd_start_epoch = le32_to_cpu(buf->lsd_start_epoch);
403 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
404 lsd->lsd_trans_table[i] = le64_to_cpu(buf->lsd_trans_table[i]);
405 lsd->lsd_trans_table_time = le32_to_cpu(buf->lsd_trans_table_time);
406 lsd->lsd_expire_intervals = le32_to_cpu(buf->lsd_expire_intervals);
409 static inline void lsd_cpu_to_le(struct lr_server_data *lsd,
410 struct lr_server_data *buf)
413 memcpy(buf->lsd_uuid, lsd->lsd_uuid, sizeof(buf->lsd_uuid));
414 buf->lsd_last_transno = cpu_to_le64(lsd->lsd_last_transno);
415 buf->lsd_compat14 = cpu_to_le64(lsd->lsd_compat14);
416 buf->lsd_mount_count = cpu_to_le64(lsd->lsd_mount_count);
417 buf->lsd_feature_compat = cpu_to_le32(lsd->lsd_feature_compat);
418 buf->lsd_feature_rocompat = cpu_to_le32(lsd->lsd_feature_rocompat);
419 buf->lsd_feature_incompat = cpu_to_le32(lsd->lsd_feature_incompat);
420 buf->lsd_server_size = cpu_to_le32(lsd->lsd_server_size);
421 buf->lsd_client_start = cpu_to_le32(lsd->lsd_client_start);
422 buf->lsd_client_size = cpu_to_le16(lsd->lsd_client_size);
423 buf->lsd_subdir_count = cpu_to_le16(lsd->lsd_subdir_count);
424 buf->lsd_catalog_oid = cpu_to_le64(lsd->lsd_catalog_oid);
425 buf->lsd_catalog_ogen = cpu_to_le32(lsd->lsd_catalog_ogen);
426 memcpy(buf->lsd_peeruuid, lsd->lsd_peeruuid, sizeof(buf->lsd_peeruuid));
427 buf->lsd_osd_index = cpu_to_le32(lsd->lsd_osd_index);
428 buf->lsd_padding1 = cpu_to_le32(lsd->lsd_padding1);
429 buf->lsd_start_epoch = cpu_to_le32(lsd->lsd_start_epoch);
430 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
431 buf->lsd_trans_table[i] = cpu_to_le64(lsd->lsd_trans_table[i]);
432 buf->lsd_trans_table_time = cpu_to_le32(lsd->lsd_trans_table_time);
433 buf->lsd_expire_intervals = cpu_to_le32(lsd->lsd_expire_intervals);
436 static inline void lcd_le_to_cpu(struct lsd_client_data *buf,
437 struct lsd_client_data *lcd)
439 memcpy(lcd->lcd_uuid, buf->lcd_uuid, sizeof (lcd->lcd_uuid));
440 lcd->lcd_last_transno = le64_to_cpu(buf->lcd_last_transno);
441 lcd->lcd_last_xid = le64_to_cpu(buf->lcd_last_xid);
442 lcd->lcd_last_result = le32_to_cpu(buf->lcd_last_result);
443 lcd->lcd_last_data = le32_to_cpu(buf->lcd_last_data);
444 lcd->lcd_last_close_transno = le64_to_cpu(buf->lcd_last_close_transno);
445 lcd->lcd_last_close_xid = le64_to_cpu(buf->lcd_last_close_xid);
446 lcd->lcd_last_close_result = le32_to_cpu(buf->lcd_last_close_result);
447 lcd->lcd_last_close_data = le32_to_cpu(buf->lcd_last_close_data);
448 lcd->lcd_pre_versions[0] = le64_to_cpu(buf->lcd_pre_versions[0]);
449 lcd->lcd_pre_versions[1] = le64_to_cpu(buf->lcd_pre_versions[1]);
450 lcd->lcd_pre_versions[2] = le64_to_cpu(buf->lcd_pre_versions[2]);
451 lcd->lcd_pre_versions[3] = le64_to_cpu(buf->lcd_pre_versions[3]);
452 lcd->lcd_last_epoch = le32_to_cpu(buf->lcd_last_epoch);
453 lcd->lcd_first_epoch = le32_to_cpu(buf->lcd_first_epoch);
456 static inline void lcd_cpu_to_le(struct lsd_client_data *lcd,
457 struct lsd_client_data *buf)
459 memcpy(buf->lcd_uuid, lcd->lcd_uuid, sizeof (lcd->lcd_uuid));
460 buf->lcd_last_transno = cpu_to_le64(lcd->lcd_last_transno);
461 buf->lcd_last_xid = cpu_to_le64(lcd->lcd_last_xid);
462 buf->lcd_last_result = cpu_to_le32(lcd->lcd_last_result);
463 buf->lcd_last_data = cpu_to_le32(lcd->lcd_last_data);
464 buf->lcd_last_close_transno = cpu_to_le64(lcd->lcd_last_close_transno);
465 buf->lcd_last_close_xid = cpu_to_le64(lcd->lcd_last_close_xid);
466 buf->lcd_last_close_result = cpu_to_le32(lcd->lcd_last_close_result);
467 buf->lcd_last_close_data = cpu_to_le32(lcd->lcd_last_close_data);
468 buf->lcd_pre_versions[0] = cpu_to_le64(lcd->lcd_pre_versions[0]);
469 buf->lcd_pre_versions[1] = cpu_to_le64(lcd->lcd_pre_versions[1]);
470 buf->lcd_pre_versions[2] = cpu_to_le64(lcd->lcd_pre_versions[2]);
471 buf->lcd_pre_versions[3] = cpu_to_le64(lcd->lcd_pre_versions[3]);
472 buf->lcd_last_epoch = cpu_to_le32(lcd->lcd_last_epoch);
473 buf->lcd_first_epoch = cpu_to_le32(lcd->lcd_first_epoch);
476 static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
478 return (lcd->lcd_last_transno > lcd->lcd_last_close_transno ?
479 lcd->lcd_last_transno : lcd->lcd_last_close_transno);
482 static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
484 return (lcd->lcd_last_xid > lcd->lcd_last_close_xid ?
485 lcd->lcd_last_xid : lcd->lcd_last_close_xid);
488 /****************** superblock additional info *********************/
493 struct lustre_sb_info {
495 struct obd_device *lsi_mgc; /* mgc obd */
496 struct lustre_mount_data *lsi_lmd; /* mount command info */
497 struct ll_sb_info *lsi_llsbi; /* add'l client sbi info */
498 struct dt_device *lsi_dt_dev; /* dt device to access disk fs*/
499 atomic_t lsi_mounts; /* references to the srv_mnt */
500 char lsi_svname[MTI_NAME_MAXLEN];
501 char lsi_osd_obdname[64];
502 char lsi_osd_uuid[64];
503 struct obd_export *lsi_osd_exp;
504 char lsi_osd_type[16];
506 struct backing_dev_info lsi_bdi; /* each client mountpoint needs
507 own backing_dev_info */
508 struct list_head lsi_lwp_list;
509 spinlock_t lsi_lwp_lock;
510 unsigned long lsi_lwp_started:1;
513 #define LSI_UMOUNT_FAILOVER 0x00200000
514 #define LSI_BDI_INITIALIZED 0x00400000
516 #define s2lsi(sb) ((struct lustre_sb_info *)((sb)->s_fs_info))
517 #define s2lsi_nocast(sb) ((sb)->s_fs_info)
519 #define get_profile_name(sb) (s2lsi(sb)->lsi_lmd->lmd_profile)
520 #define get_mount_flags(sb) (s2lsi(sb)->lsi_lmd->lmd_flags)
521 #define get_mntdev_name(sb) (s2lsi(sb)->lsi_lmd->lmd_dev)
523 #endif /* __KERNEL__ */
525 /****************** mount lookup info *********************/
527 struct lustre_mount_info {
529 struct super_block *lmi_sb;
530 struct list_head lmi_list_chain;
533 /****************** prototypes *********************/
537 int server_name2fsname(const char *svname, char *fsname, const char **endptr);
538 int server_name2svname(const char *label, char *svname, const char **endptr,
540 int server_name_is_ost(const char *svname);
541 int target_name2index(const char *svname, __u32 *idx, const char **endptr);
543 int lustre_put_lsi(struct super_block *sb);
544 int lustre_start_simple(char *obdname, char *type, char *uuid,
545 char *s1, char *s2, char *s3, char *s4);
546 int lustre_start_mgc(struct super_block *sb);
547 void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb,
548 struct vfsmount *mnt));
549 void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb));
550 int lustre_common_put_super(struct super_block *sb);
552 # ifdef HAVE_SERVER_SUPPORT
553 /* obd_mount_server.c */
554 int server_fill_super(struct super_block *sb);
555 struct lustre_mount_info *server_get_mount(const char *name);
556 int server_put_mount(const char *name, bool dereg_mnt);
557 struct mgs_target_info;
558 int server_mti_print(const char *title, struct mgs_target_info *mti);
559 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd);
562 int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id, int type);
563 #endif /* __KERNEL__ */
567 #endif // _LUSTRE_DISK_H