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, 2015, 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 REPLY_DATA "reply_data"
63 #define LOV_OBJID "lov_objid"
64 #define LOV_OBJSEQ "lov_objseq"
65 #define HEALTH_CHECK "health_check"
66 #define CAPA_KEYS "capa_keys"
67 #define CHANGELOG_USERS "changelog_users"
68 #define MGS_NIDTBL_DIR "NIDTBL_VERSIONS"
69 #define QMT_DIR "quota_master"
70 #define QSD_DIR "quota_slave"
71 #define HSM_ACTIONS "hsm_actions"
72 #define LFSCK_DIR "LFSCK"
73 #define LFSCK_BOOKMARK "lfsck_bookmark"
74 #define LFSCK_LAYOUT "lfsck_layout"
75 #define LFSCK_NAMESPACE "lfsck_namespace"
77 /****************** persistent mount data *********************/
79 #define LDD_F_SV_TYPE_MDT 0x0001
80 #define LDD_F_SV_TYPE_OST 0x0002
81 #define LDD_F_SV_TYPE_MGS 0x0004
82 #define LDD_F_SV_TYPE_MASK (LDD_F_SV_TYPE_MDT | \
85 #define LDD_F_SV_ALL 0x0008
86 /** need an index assignment */
87 #define LDD_F_NEED_INDEX 0x0010
88 /** never registered */
89 #define LDD_F_VIRGIN 0x0020
90 /** update the config logs for this server */
91 #define LDD_F_UPDATE 0x0040
92 /** rewrite the LDD */
93 #define LDD_F_REWRITE_LDD 0x0080
94 /** regenerate config logs for this fs or server */
95 #define LDD_F_WRITECONF 0x0100
97 #define LDD_F_UPGRADE14 0x0200
98 /** process as lctl conf_param */
99 #define LDD_F_PARAM 0x0400
100 /** all nodes are specified as service nodes */
101 #define LDD_F_NO_PRIMNODE 0x1000
102 /** IR enable flag */
103 #define LDD_F_IR_CAPABLE 0x2000
104 /** the MGS refused to register the target. */
105 #define LDD_F_ERROR 0x4000
106 /** process at lctl conf_param */
107 #define LDD_F_PARAM2 0x8000
109 /* opc for target register */
110 #define LDD_F_OPC_REG 0x10000000
111 #define LDD_F_OPC_UNREG 0x20000000
112 #define LDD_F_OPC_READY 0x40000000
113 #define LDD_F_OPC_MASK 0xf0000000
115 #define LDD_F_ONDISK_MASK (LDD_F_SV_TYPE_MASK)
117 #define LDD_F_MASK 0xFFFF
119 enum ldd_mount_type {
129 static inline char *mt_str(enum ldd_mount_type mt)
131 static char *mount_type_string[] = {
139 return mount_type_string[mt];
142 static inline char *mt_type(enum ldd_mount_type mt)
144 static char *mount_type_string[] = {
152 return mount_type_string[mt];
155 #define LDD_INCOMPAT_SUPP 0
156 #define LDD_ROCOMPAT_SUPP 0
158 #define LDD_MAGIC 0x1dd00001
160 /* On-disk configuration file. In host-endian order. */
161 struct lustre_disk_data {
163 __u32 ldd_feature_compat; /* compatible feature flags */
164 __u32 ldd_feature_rocompat;/* read-only compatible feature flags */
165 __u32 ldd_feature_incompat;/* incompatible feature flags */
167 __u32 ldd_config_ver; /* config rewrite count - not used */
168 __u32 ldd_flags; /* LDD_SV_TYPE */
169 __u32 ldd_svindex; /* server index (0001), must match
171 __u32 ldd_mount_type; /* target fs type LDD_MT_* */
172 char ldd_fsname[64]; /* filesystem this server is part of,
174 char ldd_svname[64]; /* this server's name (lustre-mdt0001)*/
175 __u8 ldd_uuid[40]; /* server UUID (COMPAT_146) */
177 /*200*/ char ldd_userdata[1024 - 200]; /* arbitrary user string */
178 /*1024*/__u8 ldd_padding[4096 - 1024];
179 /*4096*/char ldd_mount_opts[4096]; /* target fs mount opts */
180 /*8192*/char ldd_params[4096]; /* key=value pairs */
184 #define IS_MDT(data) ((data)->lsi_flags & LDD_F_SV_TYPE_MDT)
185 #define IS_OST(data) ((data)->lsi_flags & LDD_F_SV_TYPE_OST)
186 #define IS_MGS(data) ((data)->lsi_flags & LDD_F_SV_TYPE_MGS)
187 #define IS_SERVER(data) ((data)->lsi_flags & (LDD_F_SV_TYPE_MGS | \
188 LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST))
189 #define MT_STR(data) mt_str((data)->ldd_mount_type)
191 /* Make the mdt/ost server obd name based on the filesystem name */
192 static inline int server_make_name(__u32 flags, __u16 index, char *fs,
195 if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
196 if (!(flags & LDD_F_SV_ALL))
197 sprintf(name, "%.8s%c%s%04x", fs,
198 (flags & LDD_F_VIRGIN) ? ':' :
199 ((flags & LDD_F_WRITECONF) ? '=' : '-'),
200 (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
202 } else if (flags & LDD_F_SV_TYPE_MGS) {
203 sprintf(name, "MGS");
205 CERROR("unknown server type %#x\n", flags);
211 /****************** mount command *********************/
213 /* The lmd is only used internally by Lustre; mount simply passes
214 everything as string options */
216 #define LMD_MAGIC 0xbdacbd03
217 #define LMD_PARAMS_MAXLEN 4096
219 /* gleaned from the mount command - no persistent info here */
220 struct lustre_mount_data {
222 __u32 lmd_flags; /* lustre mount flags */
223 int lmd_mgs_failnodes; /* mgs failover node count */
224 int lmd_exclude_count;
225 int lmd_recovery_time_soft;
226 int lmd_recovery_time_hard;
227 char *lmd_dev; /* device name */
228 char *lmd_profile; /* client only */
229 char *lmd_mgssec; /* sptlrpc flavor to mgs */
230 char *lmd_opts; /* lustre mount options (as opposed to
231 _device_ mount options) */
232 char *lmd_params; /* lustre params */
233 __u32 *lmd_exclude; /* array of OSTs to ignore */
234 char *lmd_mgs; /* MGS nid */
235 char *lmd_osd_type; /* OSD type */
238 #define LMD_FLG_SERVER 0x0001 /* Mounting a server */
239 #define LMD_FLG_CLIENT 0x0002 /* Mounting a client */
240 #define LMD_FLG_ABORT_RECOV 0x0008 /* Abort recovery */
241 #define LMD_FLG_NOSVC 0x0010 /* Only start MGS/MGC for servers,
243 #define LMD_FLG_NOMGS 0x0020 /* Only start target for servers, reusing
244 existing MGS services */
245 #define LMD_FLG_WRITECONF 0x0040 /* Rewrite config log */
246 #define LMD_FLG_NOIR 0x0080 /* NO imperative recovery */
247 #define LMD_FLG_NOSCRUB 0x0100 /* Do not trigger scrub automatically */
248 #define LMD_FLG_MGS 0x0200 /* Also start MGS along with server */
249 #define LMD_FLG_IAM 0x0400 /* IAM dir */
250 #define LMD_FLG_NO_PRIMNODE 0x0800 /* all nodes are service nodes */
251 #define LMD_FLG_VIRGIN 0x1000 /* the service registers first time */
252 #define LMD_FLG_UPDATE 0x2000 /* update parameters */
253 #define LMD_FLG_HSM 0x4000 /* Start coordinator */
255 #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT)
258 /****************** last_rcvd file *********************/
260 /** version recovery epoch */
261 #define LR_EPOCH_BITS 32
262 #define lr_epoch(a) ((a) >> LR_EPOCH_BITS)
263 #define LR_EXPIRE_INTERVALS 16 /**< number of intervals to track transno */
264 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
266 #define LR_SERVER_SIZE 512
267 #define LR_CLIENT_START 8192
268 #define LR_CLIENT_SIZE 128
269 #if LR_CLIENT_START < LR_SERVER_SIZE
270 #error "Can't have LR_CLIENT_START < LR_SERVER_SIZE"
274 * This limit is arbitrary (131072 clients on x86), but it is convenient to use
275 * 2^n * PAGE_CACHE_SIZE * 8 for the number of bits that fit an order-n allocation.
276 * If we need more than 131072 clients (order-2 allocation on x86) then this
277 * should become an array of single-page pointers that are allocated on demand.
279 #if (128 * 1024UL) > (PAGE_CACHE_SIZE * 8)
280 #define LR_MAX_CLIENTS (128 * 1024UL)
282 #define LR_MAX_CLIENTS (PAGE_CACHE_SIZE * 8)
285 /** COMPAT_146: this is an OST (temporary) */
286 #define OBD_COMPAT_OST 0x00000002
287 /** COMPAT_146: this is an MDT (temporary) */
288 #define OBD_COMPAT_MDT 0x00000004
289 /** 2.0 server, interop flag to show server version is changed */
290 #define OBD_COMPAT_20 0x00000008
292 /** MDS handles LOV_OBJID file */
293 #define OBD_ROCOMPAT_LOVOBJID 0x00000001
294 /** store OST index in the IDIF */
295 #define OBD_ROCOMPAT_IDX_IN_IDIF 0x00000002
297 /** OST handles group subdirs */
298 #define OBD_INCOMPAT_GROUPS 0x00000001
299 /** this is an OST */
300 #define OBD_INCOMPAT_OST 0x00000002
301 /** this is an MDT */
302 #define OBD_INCOMPAT_MDT 0x00000004
303 /** common last_rvcd format */
304 #define OBD_INCOMPAT_COMMON_LR 0x00000008
305 /** FID is enabled */
306 #define OBD_INCOMPAT_FID 0x00000010
307 /** Size-on-MDS is enabled */
308 #define OBD_INCOMPAT_SOM 0x00000020
309 /** filesystem using iam format to store directory entries */
310 #define OBD_INCOMPAT_IAM_DIR 0x00000040
311 /** LMA attribute contains per-inode incompatible flags */
312 #define OBD_INCOMPAT_LMA 0x00000080
313 /** lmm_stripe_count has been shrunk from __u32 to __u16 and the remaining 16
314 * bits are now used to store a generation. Once we start changing the layout
315 * and bumping the generation, old versions expecting a 32-bit lmm_stripe_count
316 * will be confused by interpreting stripe_count | gen << 16 as the actual
318 #define OBD_INCOMPAT_LMM_VER 0x00000100
319 /** multiple OI files for MDT */
320 #define OBD_INCOMPAT_MULTI_OI 0x00000200
321 /** multiple RPCs in flight */
322 #define OBD_INCOMPAT_MULTI_RPCS 0x00000400
324 /* Data stored per server at the head of the last_rcvd file. In le32 order.
325 This should be common to filter_internal.h, lustre_mds.h */
326 struct lr_server_data {
327 __u8 lsd_uuid[40]; /* server UUID */
328 __u64 lsd_last_transno; /* last completed transaction ID */
329 __u64 lsd_compat14; /* reserved - compat with old last_rcvd */
330 __u64 lsd_mount_count; /* incarnation number */
331 __u32 lsd_feature_compat; /* compatible feature flags */
332 __u32 lsd_feature_rocompat;/* read-only compatible feature flags */
333 __u32 lsd_feature_incompat;/* incompatible feature flags */
334 __u32 lsd_server_size; /* size of server data area */
335 __u32 lsd_client_start; /* start of per-client data area */
336 __u16 lsd_client_size; /* size of per-client data area */
337 __u16 lsd_subdir_count; /* number of subdirectories for objects */
338 __u64 lsd_catalog_oid; /* recovery catalog object id */
339 __u32 lsd_catalog_ogen; /* recovery catalog inode generation */
340 __u8 lsd_peeruuid[40]; /* UUID of MDS associated with this OST */
341 __u32 lsd_osd_index; /* index number of OST in LOV */
342 __u32 lsd_padding1; /* was lsd_mdt_index, unused in 2.4.0 */
343 __u32 lsd_start_epoch; /* VBR: start epoch from last boot */
344 /** transaction values since lsd_trans_table_time */
345 __u64 lsd_trans_table[LR_EXPIRE_INTERVALS];
346 /** start point of transno table below */
347 __u32 lsd_trans_table_time; /* time of first slot in table above */
348 __u32 lsd_expire_intervals; /* LR_EXPIRE_INTERVALS */
349 __u8 lsd_padding[LR_SERVER_SIZE - 288];
352 /* Data stored per client in the last_rcvd file. In le32 order. */
353 struct lsd_client_data {
354 __u8 lcd_uuid[40]; /* client UUID */
355 __u64 lcd_last_transno; /* last completed transaction ID */
356 __u64 lcd_last_xid; /* xid for the last transaction */
357 __u32 lcd_last_result; /* result from last RPC */
358 __u32 lcd_last_data; /* per-op data (disposition for open &c.) */
359 /* for MDS_CLOSE requests */
360 __u64 lcd_last_close_transno; /* last completed transaction ID */
361 __u64 lcd_last_close_xid; /* xid for the last transaction */
362 __u32 lcd_last_close_result; /* result from last RPC */
363 __u32 lcd_last_close_data; /* per-op data */
364 /* VBR: last versions */
365 __u64 lcd_pre_versions[4];
366 __u32 lcd_last_epoch;
367 /* generation counter of client slot in last_rcvd */
368 __u32 lcd_generation;
369 __u8 lcd_padding[LR_CLIENT_SIZE - 128];
373 /* Data stored in each slot of the reply_data file.
375 * The lrd_client_gen field is assigned with lcd_generation value
376 * to allow identify which client the reply data belongs to.
378 struct lsd_reply_data {
379 __u64 lrd_transno; /* transaction number */
380 __u64 lrd_xid; /* transmission id */
381 __u64 lrd_data; /* per-operation data */
382 __u32 lrd_result; /* request result */
383 __u32 lrd_client_gen; /* client generation */
386 /* Header of the reply_data file */
387 #define LRH_MAGIC 0xbdabda01
388 struct lsd_reply_header {
390 __u32 lrh_header_size;
391 __u32 lrh_reply_size;
392 __u8 lrh_pad[sizeof(struct lsd_reply_data) - 12];
396 /* bug20354: the lcd_uuid for export of clients may be wrong */
397 static inline void check_lcd(char *obd_name, int index,
398 struct lsd_client_data *lcd)
400 size_t length = sizeof(lcd->lcd_uuid);
401 if (strnlen((char*)lcd->lcd_uuid, length) == length) {
402 lcd->lcd_uuid[length - 1] = '\0';
404 LCONSOLE_ERROR("the client UUID (%s) on %s for exports"
405 "stored in last_rcvd(index = %d) is bad!\n",
406 lcd->lcd_uuid, obd_name, index);
410 /* last_rcvd handling */
411 static inline void lsd_le_to_cpu(struct lr_server_data *buf,
412 struct lr_server_data *lsd)
415 memcpy(lsd->lsd_uuid, buf->lsd_uuid, sizeof(lsd->lsd_uuid));
416 lsd->lsd_last_transno = le64_to_cpu(buf->lsd_last_transno);
417 lsd->lsd_compat14 = le64_to_cpu(buf->lsd_compat14);
418 lsd->lsd_mount_count = le64_to_cpu(buf->lsd_mount_count);
419 lsd->lsd_feature_compat = le32_to_cpu(buf->lsd_feature_compat);
420 lsd->lsd_feature_rocompat = le32_to_cpu(buf->lsd_feature_rocompat);
421 lsd->lsd_feature_incompat = le32_to_cpu(buf->lsd_feature_incompat);
422 lsd->lsd_server_size = le32_to_cpu(buf->lsd_server_size);
423 lsd->lsd_client_start = le32_to_cpu(buf->lsd_client_start);
424 lsd->lsd_client_size = le16_to_cpu(buf->lsd_client_size);
425 lsd->lsd_subdir_count = le16_to_cpu(buf->lsd_subdir_count);
426 lsd->lsd_catalog_oid = le64_to_cpu(buf->lsd_catalog_oid);
427 lsd->lsd_catalog_ogen = le32_to_cpu(buf->lsd_catalog_ogen);
428 memcpy(lsd->lsd_peeruuid, buf->lsd_peeruuid, sizeof(lsd->lsd_peeruuid));
429 lsd->lsd_osd_index = le32_to_cpu(buf->lsd_osd_index);
430 lsd->lsd_padding1 = le32_to_cpu(buf->lsd_padding1);
431 lsd->lsd_start_epoch = le32_to_cpu(buf->lsd_start_epoch);
432 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
433 lsd->lsd_trans_table[i] = le64_to_cpu(buf->lsd_trans_table[i]);
434 lsd->lsd_trans_table_time = le32_to_cpu(buf->lsd_trans_table_time);
435 lsd->lsd_expire_intervals = le32_to_cpu(buf->lsd_expire_intervals);
438 static inline void lsd_cpu_to_le(struct lr_server_data *lsd,
439 struct lr_server_data *buf)
442 memcpy(buf->lsd_uuid, lsd->lsd_uuid, sizeof(buf->lsd_uuid));
443 buf->lsd_last_transno = cpu_to_le64(lsd->lsd_last_transno);
444 buf->lsd_compat14 = cpu_to_le64(lsd->lsd_compat14);
445 buf->lsd_mount_count = cpu_to_le64(lsd->lsd_mount_count);
446 buf->lsd_feature_compat = cpu_to_le32(lsd->lsd_feature_compat);
447 buf->lsd_feature_rocompat = cpu_to_le32(lsd->lsd_feature_rocompat);
448 buf->lsd_feature_incompat = cpu_to_le32(lsd->lsd_feature_incompat);
449 buf->lsd_server_size = cpu_to_le32(lsd->lsd_server_size);
450 buf->lsd_client_start = cpu_to_le32(lsd->lsd_client_start);
451 buf->lsd_client_size = cpu_to_le16(lsd->lsd_client_size);
452 buf->lsd_subdir_count = cpu_to_le16(lsd->lsd_subdir_count);
453 buf->lsd_catalog_oid = cpu_to_le64(lsd->lsd_catalog_oid);
454 buf->lsd_catalog_ogen = cpu_to_le32(lsd->lsd_catalog_ogen);
455 memcpy(buf->lsd_peeruuid, lsd->lsd_peeruuid, sizeof(buf->lsd_peeruuid));
456 buf->lsd_osd_index = cpu_to_le32(lsd->lsd_osd_index);
457 buf->lsd_padding1 = cpu_to_le32(lsd->lsd_padding1);
458 buf->lsd_start_epoch = cpu_to_le32(lsd->lsd_start_epoch);
459 for (i = 0; i < LR_EXPIRE_INTERVALS; i++)
460 buf->lsd_trans_table[i] = cpu_to_le64(lsd->lsd_trans_table[i]);
461 buf->lsd_trans_table_time = cpu_to_le32(lsd->lsd_trans_table_time);
462 buf->lsd_expire_intervals = cpu_to_le32(lsd->lsd_expire_intervals);
465 static inline void lcd_le_to_cpu(struct lsd_client_data *buf,
466 struct lsd_client_data *lcd)
468 memcpy(lcd->lcd_uuid, buf->lcd_uuid, sizeof (lcd->lcd_uuid));
469 lcd->lcd_last_transno = le64_to_cpu(buf->lcd_last_transno);
470 lcd->lcd_last_xid = le64_to_cpu(buf->lcd_last_xid);
471 lcd->lcd_last_result = le32_to_cpu(buf->lcd_last_result);
472 lcd->lcd_last_data = le32_to_cpu(buf->lcd_last_data);
473 lcd->lcd_last_close_transno = le64_to_cpu(buf->lcd_last_close_transno);
474 lcd->lcd_last_close_xid = le64_to_cpu(buf->lcd_last_close_xid);
475 lcd->lcd_last_close_result = le32_to_cpu(buf->lcd_last_close_result);
476 lcd->lcd_last_close_data = le32_to_cpu(buf->lcd_last_close_data);
477 lcd->lcd_pre_versions[0] = le64_to_cpu(buf->lcd_pre_versions[0]);
478 lcd->lcd_pre_versions[1] = le64_to_cpu(buf->lcd_pre_versions[1]);
479 lcd->lcd_pre_versions[2] = le64_to_cpu(buf->lcd_pre_versions[2]);
480 lcd->lcd_pre_versions[3] = le64_to_cpu(buf->lcd_pre_versions[3]);
481 lcd->lcd_last_epoch = le32_to_cpu(buf->lcd_last_epoch);
482 lcd->lcd_generation = le32_to_cpu(buf->lcd_generation);
485 static inline void lcd_cpu_to_le(struct lsd_client_data *lcd,
486 struct lsd_client_data *buf)
488 memcpy(buf->lcd_uuid, lcd->lcd_uuid, sizeof (lcd->lcd_uuid));
489 buf->lcd_last_transno = cpu_to_le64(lcd->lcd_last_transno);
490 buf->lcd_last_xid = cpu_to_le64(lcd->lcd_last_xid);
491 buf->lcd_last_result = cpu_to_le32(lcd->lcd_last_result);
492 buf->lcd_last_data = cpu_to_le32(lcd->lcd_last_data);
493 buf->lcd_last_close_transno = cpu_to_le64(lcd->lcd_last_close_transno);
494 buf->lcd_last_close_xid = cpu_to_le64(lcd->lcd_last_close_xid);
495 buf->lcd_last_close_result = cpu_to_le32(lcd->lcd_last_close_result);
496 buf->lcd_last_close_data = cpu_to_le32(lcd->lcd_last_close_data);
497 buf->lcd_pre_versions[0] = cpu_to_le64(lcd->lcd_pre_versions[0]);
498 buf->lcd_pre_versions[1] = cpu_to_le64(lcd->lcd_pre_versions[1]);
499 buf->lcd_pre_versions[2] = cpu_to_le64(lcd->lcd_pre_versions[2]);
500 buf->lcd_pre_versions[3] = cpu_to_le64(lcd->lcd_pre_versions[3]);
501 buf->lcd_last_epoch = cpu_to_le32(lcd->lcd_last_epoch);
502 buf->lcd_generation = cpu_to_le32(lcd->lcd_generation);
505 static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
507 return (lcd->lcd_last_transno > lcd->lcd_last_close_transno ?
508 lcd->lcd_last_transno : lcd->lcd_last_close_transno);
511 static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
513 return (lcd->lcd_last_xid > lcd->lcd_last_close_xid ?
514 lcd->lcd_last_xid : lcd->lcd_last_close_xid);
517 /****************** superblock additional info *********************/
522 struct lustre_sb_info {
524 struct obd_device *lsi_mgc; /* mgc obd */
525 struct lustre_mount_data *lsi_lmd; /* mount command info */
526 struct ll_sb_info *lsi_llsbi; /* add'l client sbi info */
527 struct dt_device *lsi_dt_dev; /* dt device to access disk fs*/
528 atomic_t lsi_mounts; /* references to the srv_mnt */
529 char lsi_svname[MTI_NAME_MAXLEN];
530 char lsi_osd_obdname[64];
531 char lsi_osd_uuid[64];
532 struct obd_export *lsi_osd_exp;
533 char lsi_osd_type[16];
535 struct backing_dev_info lsi_bdi; /* each client mountpoint needs
536 own backing_dev_info */
537 struct list_head lsi_lwp_list;
538 spinlock_t lsi_lwp_lock;
539 unsigned long lsi_lwp_started:1;
542 #define LSI_UMOUNT_FAILOVER 0x00200000
543 #define LSI_BDI_INITIALIZED 0x00400000
545 #define s2lsi(sb) ((struct lustre_sb_info *)((sb)->s_fs_info))
546 #define s2lsi_nocast(sb) ((sb)->s_fs_info)
548 #define get_profile_name(sb) (s2lsi(sb)->lsi_lmd->lmd_profile)
549 #define get_mount_flags(sb) (s2lsi(sb)->lsi_lmd->lmd_flags)
550 #define get_mntdev_name(sb) (s2lsi(sb)->lsi_lmd->lmd_dev)
552 #endif /* __KERNEL__ */
554 /****************** mount lookup info *********************/
556 struct lustre_mount_info {
558 struct super_block *lmi_sb;
559 struct list_head lmi_list_chain;
562 /****************** prototypes *********************/
566 int server_name2fsname(const char *svname, char *fsname, const char **endptr);
567 int server_name2svname(const char *label, char *svname, const char **endptr,
569 int server_name_is_ost(const char *svname);
570 int target_name2index(const char *svname, __u32 *idx, const char **endptr);
572 int lustre_put_lsi(struct super_block *sb);
573 int lustre_start_simple(char *obdname, char *type, char *uuid,
574 char *s1, char *s2, char *s3, char *s4);
575 int lustre_start_mgc(struct super_block *sb);
576 void lustre_register_client_fill_super(int (*cfs)(struct super_block *sb,
577 struct vfsmount *mnt));
578 void lustre_register_kill_super_cb(void (*cfs)(struct super_block *sb));
579 int lustre_common_put_super(struct super_block *sb);
581 # ifdef HAVE_SERVER_SUPPORT
582 /* obd_mount_server.c */
583 int server_fill_super(struct super_block *sb);
584 struct lustre_mount_info *server_get_mount(const char *name);
585 int server_put_mount(const char *name, bool dereg_mnt);
586 struct mgs_target_info;
587 int server_mti_print(const char *title, struct mgs_target_info *mti);
588 void server_calc_timeout(struct lustre_sb_info *lsi, struct obd_device *obd);
591 int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id, int type);
592 #endif /* __KERNEL__ */
596 #endif // _LUSTRE_DISK_H