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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/include/lustre/lustre_idl.h
34 * Lustre wire protocol definitions.
37 /** \defgroup lustreidl lustreidl
39 * Lustre wire protocol definitions.
41 * ALL structs passing over the wire should be declared here. Structs
42 * that are used in interfaces with userspace should go in lustre_user.h.
44 * All structs being declared here should be built from simple fixed-size
45 * types (__u8, __u16, __u32, __u64) or be built from other types or
46 * structs also declared in this file. Similarly, all flags and magic
47 * values in those structs should also be declared here. This ensures
48 * that the Lustre wire protocol is not influenced by external dependencies.
50 * The only other acceptable items in this file are VERY SIMPLE accessor
51 * functions to avoid callers grubbing inside the structures. Nothing that
52 * depends on external functions or definitions should be in here.
54 * Structs must be properly aligned to put 64-bit values on an 8-byte
55 * boundary. Any structs being added here must also be added to
56 * utils/wirecheck.c and "make newwiretest" run to regenerate the
57 * utils/wiretest.c sources. This allows us to verify that wire structs
58 * have the proper alignment/size on all architectures.
60 * DO NOT CHANGE any of the structs, flags, values declared here and used
61 * in released Lustre versions. Some structs may have padding fields that
62 * can be used. Some structs might allow addition at the end (verify this
63 * in the code to ensure that new/old clients that see this larger struct
64 * do not fail, otherwise you need to implement protocol compatibility).
69 #ifndef _LUSTRE_IDL_H_
70 #define _LUSTRE_IDL_H_
72 #include <asm/byteorder.h>
73 #include <linux/errno.h>
74 #include <linux/fiemap.h>
75 #include <linux/types.h>
77 * This is due to us being out of kernel and the way the OpenSFS branch
81 # include <uapi/linux/lnet/lnet-types.h>
83 # include <linux/lnet/lnet-types.h>
85 #include <linux/lustre/lustre_user.h>
86 #include <linux/lustre/lustre_ver.h>
88 #if defined(__cplusplus)
95 /* FOO_REQUEST_PORTAL is for incoming requests on the FOO
96 * FOO_REPLY_PORTAL is for incoming replies on the FOO
97 * FOO_BULK_PORTAL is for incoming bulk on the FOO
100 #define CONNMGR_REQUEST_PORTAL 1
101 #define CONNMGR_REPLY_PORTAL 2
102 //#define OSC_REQUEST_PORTAL 3
103 #define OSC_REPLY_PORTAL 4
104 //#define OSC_BULK_PORTAL 5
105 #define OST_IO_PORTAL 6
106 #define OST_CREATE_PORTAL 7
107 #define OST_BULK_PORTAL 8
108 //#define MDC_REQUEST_PORTAL 9
109 #define MDC_REPLY_PORTAL 10
110 //#define MDC_BULK_PORTAL 11
111 #define MDS_REQUEST_PORTAL 12
112 #define MDS_IO_PORTAL 13
113 #define MDS_BULK_PORTAL 14
114 #define LDLM_CB_REQUEST_PORTAL 15
115 #define LDLM_CB_REPLY_PORTAL 16
116 #define LDLM_CANCEL_REQUEST_PORTAL 17
117 #define LDLM_CANCEL_REPLY_PORTAL 18
118 //#define PTLBD_REQUEST_PORTAL 19
119 //#define PTLBD_REPLY_PORTAL 20
120 //#define PTLBD_BULK_PORTAL 21
121 #define MDS_SETATTR_PORTAL 22
122 #define MDS_READPAGE_PORTAL 23
123 #define OUT_PORTAL 24
124 #define MGC_REPLY_PORTAL 25
125 #define MGS_REQUEST_PORTAL 26
126 #define MGS_REPLY_PORTAL 27
127 #define OST_REQUEST_PORTAL 28
128 #define FLD_REQUEST_PORTAL 29
129 #define SEQ_METADATA_PORTAL 30
130 #define SEQ_DATA_PORTAL 31
131 #define SEQ_CONTROLLER_PORTAL 32
132 #define MGS_BULK_PORTAL 33
133 /* #define DVS_PORTAL 63 */
134 /* reserved for Cray DVS - spitzcor@cray.com, roe@cray.com, n8851@cray.com */
137 * Describes a range of sequence, lsr_start is included but lsr_end is
139 * Same structure is used in fld module where lsr_index field holds mdt id
142 struct lu_seq_range {
149 struct lu_seq_range_array {
152 struct lu_seq_range lsra_lsr[0];
155 #define LU_SEQ_RANGE_MDT 0x0
156 #define LU_SEQ_RANGE_OST 0x1
157 #define LU_SEQ_RANGE_ANY 0x3
159 #define LU_SEQ_RANGE_MASK 0x3
161 /** \defgroup lu_fid lu_fid
164 extern void lustre_lma_swab(struct lustre_mdt_attrs *lma);
165 extern void lustre_lma_init(struct lustre_mdt_attrs *lma,
166 const struct lu_fid *fid,
167 __u32 compat, __u32 incompat);
168 extern void lustre_loa_swab(struct lustre_ost_attrs *loa,
170 extern void lustre_loa_init(struct lustre_ost_attrs *loa,
171 const struct lu_fid *fid,
172 __u32 compat, __u32 incompat);
174 /* copytool can use any nonnegative integer to represent archive-Ids during
175 * register with MDT thru kuc.
176 * archive num = 0 => all
177 * archive num from 1 to MAX_U32
179 #define LL_HSM_ORIGIN_MAX_ARCHIVE (sizeof(__u32) * 8)
180 /* the max count of archive ids that one agent can support */
181 #define LL_HSM_MAX_ARCHIVES_PER_AGENT 1024
184 * HSM on-disk attributes stored in a separate xattr.
187 /** Bitfield for supported data in this structure. For future use. */
190 /** HSM flags, see hsm_flags enum below */
192 /** backend archive id associated with the file */
194 /** version associated with the last archiving, if any */
197 extern void lustre_hsm_swab(struct hsm_attrs *attrs);
203 /** LASTID file has zero OID */
204 LUSTRE_FID_LASTID_OID = 0UL,
205 /** initial fid id value */
206 LUSTRE_FID_INIT_OID = 1UL
210 * Different FID Format
211 * http://arch.lustre.org/index.php?title=Interoperability_fids_zfs#NEW.0
214 * File IDentifier generated by client from range allocated by the seq service.
215 * First 0x400 sequences [2^33, 2^33 + 0x400] are reserved for system use. Note
216 * that on ldiskfs MDTs that IGIF FIDs can use inode numbers starting at 12,
217 * but this is in the IGIF SEQ rangeand does not conflict with assigned FIDs.
220 * Inode and Generation In FID, a surrogate FID used to globally identify an
221 * existing object on OLD formatted MDT file system. This would only be used on
222 * MDT0 in a DNE filesystem, because there are not expected to be any OLD
223 * formatted DNE filesystems. Belongs to a sequence in [12, 2^32 - 1] range,
224 * where sequence number is inode number, and inode generation is used as OID.
225 * NOTE: This assumes no more than 2^32-1 inodes exist in the MDT filesystem,
226 * which is the maximum possible for an ldiskfs backend. NOTE: This assumes
227 * that the reserved ext3/ext4/ldiskfs inode numbers [0-11] are never visible
228 * to clients, which has always been true.
231 * Object ID in FID, a surrogate FID used to globally identify an existing
232 * object on OLD formatted OST file system. Belongs to a sequence in
233 * [2^32, 2^33 - 1]. Sequence number is calculated as:
234 * 1 << 32 | (ost_index << 16) | ((objid >> 32) & 0xffff)
235 * that is, SEQ consists of 16-bit OST index, and higher 16 bits of object ID.
236 * The generation of unique SEQ values per OST allows the IDIF FIDs to be
237 * identified in the FLD correctly. The OID field is calculated as:
239 * that is, it consists of lower 32 bits of object ID. NOTE This assumes that
240 * no more than 2^48-1 objects have ever been created on an OST, and that no
241 * more than 65535 OSTs are in use. Both are very reasonable assumptions (can
242 * uniquely map all objects on an OST that created 1M objects per second for 9
243 * years, or combinations thereof).
246 * Surrogate FID used to identify an existing object on OLD formatted OST
247 * filesystem. Belongs to the reserved sequence 0, and is used internally prior
248 * to the introduction of FID-on-OST, at which point IDIF will be used to
249 * identify objects as residing on a specific OST.
252 * For Lustre Log objects the object sequence 1 is used. This is compatible with
253 * both OLD and NEW.1 namespaces, as this SEQ number is in the ext3/ldiskfs
254 * reserved inode range and does not conflict with IGIF sequence numbers.
257 * For testing OST IO performance the object sequence 2 is used. This is
258 * compatible with both OLD and NEW.1 namespaces, as this SEQ number is in the
259 * ext3/ldiskfs reserved inode range and does not conflict with IGIF sequence
262 * OST_MDT1 .. OST_MAX:
263 * For testing with multiple MDTs the object sequence 3 through 9 is used,
264 * allowing direct mapping of MDTs 1 through 7 respectively, for a total of 8
265 * MDTs including OST_MDT0. This matches the legacy CMD project "group"
266 * mappings. However, this SEQ range is only for testing prior to any production
267 * DNE release, as the objects in this range conflict across all OSTs, as the
268 * OST index is not part of the FID.
271 * For compatibility with existing OLD OST network protocol structures, the FID
272 * must map onto the o_id and o_gr in a manner that ensures existing objects are
273 * identified consistently for IO, as well as onto the lock namespace to ensure
274 * both IDIFs map onto the same objects for IO as well as resources in the DLM.
277 * resource[] = {o_id, o_seq, 0, 0}; // o_seq == 0 for production releases
279 * DLM NEW.1 FID (this is the same for both the MDT and OST):
280 * resource[] = {SEQ, OID, VER, HASH};
282 * Note that for mapping IDIF values to DLM resource names the o_id may be
283 * larger than the 2^33 reserved sequence numbers for IDIF, so it is possible
284 * for the o_id numbers to overlap FID SEQ numbers in the resource. However, in
285 * all production releases the OLD o_seq field is always zero, and all valid FID
286 * OID values are non-zero, so the lock resources will not collide.
288 * For objects within the IDIF range, group extraction (non-CMD) will be:
289 * o_id = (fid->f_seq & 0x7fff) << 16 | fid->f_oid;
290 * o_seq = 0; // formerly group number
294 * Note that reserved SEQ numbers below 12 will conflict with ldiskfs
295 * inodes in the IGIF namespace, so these reserved SEQ numbers can be
296 * used for other purposes and not risk collisions with existing inodes.
299 FID_SEQ_OST_MDT0 = 0,
300 FID_SEQ_LLOG = 1, /* unnamed llogs */
302 FID_SEQ_UNUSED_START = 3,
303 FID_SEQ_UNUSED_END = 9,
304 FID_SEQ_LLOG_NAME = 10, /* named llogs */
307 FID_SEQ_IGIF_MAX = 0x0ffffffffULL,
308 FID_SEQ_IDIF = 0x100000000ULL,
309 FID_SEQ_IDIF_MAX = 0x1ffffffffULL,
310 /* Normal FID sequence starts from this value, i.e. 1<<33 */
311 FID_SEQ_START = 0x200000000ULL,
312 /* sequence for local pre-defined FIDs listed in local_oid */
313 FID_SEQ_LOCAL_FILE = 0x200000001ULL,
314 FID_SEQ_DOT_LUSTRE = 0x200000002ULL,
315 /* sequence is used for local named objects FIDs generated
316 * by local_object_storage library */
317 FID_SEQ_LOCAL_NAME = 0x200000003ULL,
318 /* Because current FLD will only cache the fid sequence, instead
319 * of oid on the client side, if the FID needs to be exposed to
320 * clients sides, it needs to make sure all of fids under one
321 * sequence will be located in one MDT. */
322 FID_SEQ_SPECIAL = 0x200000004ULL,
323 FID_SEQ_QUOTA = 0x200000005ULL,
324 FID_SEQ_QUOTA_GLB = 0x200000006ULL,
325 FID_SEQ_ROOT = 0x200000007ULL, /* Located on MDT0 */
326 FID_SEQ_LAYOUT_RBTREE = 0x200000008ULL,
327 /* sequence is used for update logs of cross-MDT operation */
328 FID_SEQ_UPDATE_LOG = 0x200000009ULL,
329 /* Sequence is used for the directory under which update logs
331 FID_SEQ_UPDATE_LOG_DIR = 0x20000000aULL,
332 FID_SEQ_NORMAL = 0x200000400ULL,
333 FID_SEQ_LOV_DEFAULT = 0xffffffffffffffffULL
336 #define OBIF_OID_MAX_BITS 32
337 #define OBIF_MAX_OID (1ULL << OBIF_OID_MAX_BITS)
338 #define OBIF_OID_MASK ((1ULL << OBIF_OID_MAX_BITS) - 1)
339 #define IDIF_OID_MAX_BITS 48
340 #define IDIF_MAX_OID (1ULL << IDIF_OID_MAX_BITS)
341 #define IDIF_OID_MASK ((1ULL << IDIF_OID_MAX_BITS) - 1)
343 /** OID for FID_SEQ_SPECIAL */
345 /* Big Filesystem Lock to serialize rename operations */
346 FID_OID_SPECIAL_BFL = 1UL,
349 /** OID for FID_SEQ_DOT_LUSTRE */
350 enum dot_lustre_oid {
351 FID_OID_DOT_LUSTRE = 1UL,
352 FID_OID_DOT_LUSTRE_OBF = 2UL,
353 FID_OID_DOT_LUSTRE_LPF = 3UL,
356 /** OID for FID_SEQ_ROOT */
359 FID_OID_ECHO_ROOT = 2UL,
362 struct lu_orphan_rec {
363 /* The MDT-object's FID referenced by the orphan OST-object */
364 struct lu_fid lor_fid;
369 struct lu_orphan_ent {
370 /* The orphan OST-object's FID */
371 struct lu_fid loe_key;
372 struct lu_orphan_rec loe_rec;
375 struct lu_orphan_rec_v2 {
376 struct lu_orphan_rec lor_rec;
377 struct ost_layout lor_layout;
381 struct lu_orphan_ent_v2 {
382 /* The orphan OST-object's FID */
383 struct lu_fid loe_key;
384 struct lu_orphan_rec_v2 loe_rec;
387 struct lu_orphan_rec_v3 {
388 struct lu_orphan_rec lor_rec;
389 struct ost_layout lor_layout;
390 /* The OST-object declared layout version in PFID EA.*/
391 __u32 lor_layout_version;
392 /* The OST-object declared layout range (of version) in PFID EA.*/
398 struct lu_orphan_ent_v3 {
399 /* The orphan OST-object's FID */
400 struct lu_fid loe_key;
401 struct lu_orphan_rec_v3 loe_rec;
406 /** \defgroup lu_dir lu_dir
410 * Enumeration of possible directory entry attributes.
412 * Attributes follow directory entry header in the order they appear in this
415 enum lu_dirent_attrs {
418 LUDA_64BITHASH = 0x0004,
420 /* The following attrs are used for MDT internal only,
421 * not visible to client */
423 /* Something in the record is unknown, to be verified in further. */
424 LUDA_UNKNOWN = 0x0400,
425 /* Ignore this record, go to next directly. */
426 LUDA_IGNORE = 0x0800,
427 /* The system is upgraded, has beed or to be repaired (dryrun). */
428 LUDA_UPGRADE = 0x1000,
429 /* The dirent has been repaired, or to be repaired (dryrun). */
430 LUDA_REPAIR = 0x2000,
431 /* Only check but not repair the dirent inconsistency */
432 LUDA_VERIFY_DRYRUN = 0x4000,
433 /* Verify the dirent consistency */
434 LUDA_VERIFY = 0x8000,
437 #define LU_DIRENT_ATTRS_MASK 0xff00
440 * Layout of readdir pages, as transmitted on wire.
443 /** valid if LUDA_FID is set. */
444 struct lu_fid lde_fid;
445 /** a unique entry identifier: a hash or an offset. */
447 /** total record length, including all attributes. */
451 /** optional variable size attributes following this entry.
452 * taken from enum lu_dirent_attrs.
455 /** name is followed by the attributes indicated in ->ldp_attrs, in
456 * their natural order. After the last attribute, padding bytes are
457 * added to make ->lde_reclen a multiple of 8.
463 * Definitions of optional directory entry attributes formats.
465 * Individual attributes do not have their length encoded in a generic way. It
466 * is assumed that consumer of an attribute knows its format. This means that
467 * it is impossible to skip over an unknown attribute, except by skipping over all
468 * remaining attributes (by using ->lde_reclen), which is not too
469 * constraining, because new server versions will append new attributes at
470 * the end of an entry.
474 * Fid directory attribute: a fid of an object referenced by the entry. This
475 * will be almost always requested by the client and supplied by the server.
477 * Aligned to 8 bytes.
479 /* To have compatibility with 1.8, lets have fid in lu_dirent struct. */
484 * Aligned to 2 bytes.
491 __u64 ldp_hash_start;
495 struct lu_dirent ldp_entries[0];
498 enum lu_dirpage_flags {
500 * dirpage contains no entry.
504 * last entry's lde_hash equals ldp_hash_end.
509 static inline struct lu_dirent *lu_dirent_start(struct lu_dirpage *dp)
511 if (__le32_to_cpu(dp->ldp_flags) & LDF_EMPTY)
514 return dp->ldp_entries;
517 static inline struct lu_dirent *lu_dirent_next(struct lu_dirent *ent)
519 struct lu_dirent *next;
521 if (__le16_to_cpu(ent->lde_reclen) != 0)
522 next = ((void *)ent) + __le16_to_cpu(ent->lde_reclen);
529 static inline __kernel_size_t lu_dirent_calc_size(size_t namelen, __u16 attr)
531 __kernel_size_t size;
533 if (attr & LUDA_TYPE) {
534 const __kernel_size_t align = sizeof(struct luda_type) - 1;
536 size = (sizeof(struct lu_dirent) + namelen + 1 + align) &
538 size += sizeof(struct luda_type);
540 size = sizeof(struct lu_dirent) + namelen + 1;
543 return (size + 7) & ~7;
546 #define MDS_DIR_END_OFF 0xfffffffffffffffeULL
549 * MDS_READPAGE page size
551 * This is the directory page size packed in MDS_READPAGE RPC.
552 * It's different than PAGE_SIZE because the client needs to
553 * access the struct lu_dirpage header packed at the beginning of
554 * the "page" and without this there isn't any way to know find the
555 * lu_dirpage header is if client and server PAGE_SIZE differ.
557 #define LU_PAGE_SHIFT 12
558 #define LU_PAGE_SIZE (1UL << LU_PAGE_SHIFT)
559 #define LU_PAGE_MASK (~(LU_PAGE_SIZE - 1))
561 #define LU_PAGE_COUNT (1 << (PAGE_SHIFT - LU_PAGE_SHIFT))
565 struct lustre_handle {
568 #define DEAD_HANDLE_MAGIC 0xdeadbeefcafebabeULL
570 static inline bool lustre_handle_is_used(const struct lustre_handle *lh)
572 return lh->cookie != 0;
575 static inline bool lustre_handle_equal(const struct lustre_handle *lh1,
576 const struct lustre_handle *lh2)
578 return lh1->cookie == lh2->cookie;
581 static inline void lustre_handle_copy(struct lustre_handle *tgt,
582 const struct lustre_handle *src)
584 tgt->cookie = src->cookie;
587 /* lustre_msg struct magic. DON'T use swabbed values of MAGIC as magic! */
588 enum lustre_msg_magic {
589 LUSTRE_MSG_MAGIC_V2 = 0x0BD00BD3,
590 LUSTRE_MSG_MAGIC_V2_SWABBED = 0xD30BD00B,
591 LUSTRE_MSG_MAGIC = LUSTRE_MSG_MAGIC_V2
594 /* flags for lm_flags */
596 MSGHDR_AT_SUPPORT = 0x1, /* adaptive timeouts, lm_cksum valid
597 * in early reply messages */
598 MSGHDR_CKSUM_INCOMPAT18 = 0x2, /* compat for 1.8, needs to be set well
599 * beyond 2.8.0 for compatibility */
602 #define lustre_msg lustre_msg_v2
603 /* we depend on this structure to be 8-byte aligned */
604 /* this type is only endian-adjusted in lustre_unpack_msg() */
605 struct lustre_msg_v2 {
606 __u32 lm_bufcount; /* number of buffers in lm_buflens[] */
607 __u32 lm_secflvr; /* 0 = no crypto, or sptlrpc security flavour */
608 __u32 lm_magic; /* RPC version magic = LUSTRE_MSG_MAGIC_V2 */
609 __u32 lm_repsize; /* size of preallocated reply buffer */
610 __u32 lm_cksum; /* CRC32 of ptlrpc_body early reply messages */
611 __u32 lm_flags; /* enum lustre_msghdr MSGHDR_* flags */
612 __u32 lm_padding_2; /* unused */
613 __u32 lm_padding_3; /* unused */
614 __u32 lm_buflens[0]; /* length of additional buffers in bytes,
615 * padded to a multiple of 8 bytes. */
617 * message buffers are packed after padded lm_buflens[] array,
618 * padded to a multiple of 8 bytes each to align contents.
622 /* ptlrpc_body packet pb_types */
623 #define PTL_RPC_MSG_REQUEST 4711 /* normal RPC request message */
624 #define PTL_RPC_MSG_ERR 4712 /* error reply if request unprocessed */
625 #define PTL_RPC_MSG_REPLY 4713 /* normal RPC reply message */
627 /* ptlrpc_body pb_version ((target_version << 16) | rpc_version) */
628 enum lustre_msg_version {
629 PTLRPC_MSG_VERSION = 0x00000003,
630 LUSTRE_VERSION_MASK = 0xffff0000,
631 LUSTRE_OBD_VERSION = 0x00010000,
632 LUSTRE_MDS_VERSION = 0x00020000,
633 LUSTRE_OST_VERSION = 0x00030000,
634 LUSTRE_DLM_VERSION = 0x00040000,
635 LUSTRE_LOG_VERSION = 0x00050000,
636 LUSTRE_MGS_VERSION = 0x00060000,
639 /* pb_flags that apply to all request messages */
640 /* #define MSG_LAST_REPLAY 0x0001 obsolete 2.0 => {REQ,LOCK}_REPLAY_DONE */
641 #define MSG_RESENT 0x0002 /* was previously sent, no reply seen */
642 #define MSG_REPLAY 0x0004 /* was processed, got reply, recovery */
643 /* #define MSG_AT_SUPPORT 0x0008 obsolete since 1.5, AT always enabled */
644 /* #define MSG_DELAY_REPLAY 0x0010 obsolete since 2.0 */
645 /* #define MSG_VERSION_REPLAY 0x0020 obsolete since 1.8.2, VBR always on */
646 #define MSG_REQ_REPLAY_DONE 0x0040 /* request replay over, locks next */
647 #define MSG_LOCK_REPLAY_DONE 0x0080 /* lock replay over, client done */
649 /* pb_op_flags for connect opcodes: MDS_CONNECT, OST_CONNECT, MGS_CONNECT */
650 #define MSG_CONNECT_RECOVERING 0x00000001 /* target is in recovery */
651 #define MSG_CONNECT_RECONNECT 0x00000002 /* tgt already has client import */
652 #define MSG_CONNECT_REPLAYABLE 0x00000004 /* target supports RPC replay */
653 /* #define MSG_CONNECT_PEER 0x00000008 obsolete since 1.2, removed in 1.5 */
654 #define MSG_CONNECT_LIBCLIENT 0x00000010 /* obsolete since 2.3, removed 2.6 */
655 #define MSG_CONNECT_INITIAL 0x00000020 /* first client connection attempt */
656 /* #define MSG_CONNECT_ASYNC 0x00000040 obsolete since 1.5 */
657 #define MSG_CONNECT_NEXT_VER 0x00000080 /* use next version of lustre_msg */
658 #define MSG_CONNECT_TRANSNO 0x00000100 /* client sent transno in replay */
660 /* number of previous object versions in pb_pre_versions[] */
661 #define PTLRPC_NUM_VERSIONS 4
662 /* without gss, ptlrpc_body is put at the first buffer. */
663 struct ptlrpc_body_v3 {
664 struct lustre_handle pb_handle;
665 __u32 pb_type; /* request/reply/err type: PTL_RPC_MSG_* */
666 __u32 pb_version; /* LUSTRE_*_VERSION | PTLRPC_MSG_VERSION */
667 __u32 pb_opc; /* RPC opcodes: MDS_*, OST_*, LDLM_, ... */
668 __u32 pb_status; /* negative Linux x86 error number */
669 __u64 pb_last_xid; /* highest replied XID w/o lower unreplied XID*/
670 __u16 pb_tag; /* multiple modifying RPCs virtual slot index */
673 __u64 pb_last_committed;/* rep: highest pb_transno committed to disk */
674 __u64 pb_transno; /* server-assigned transno for modifying RPCs */
675 __u32 pb_flags; /* req: MSG_* flags */
676 __u32 pb_op_flags; /* req: MSG_CONNECT_* flags */
677 __u32 pb_conn_cnt; /* connect instance of this client on server */
678 __u32 pb_timeout; /* req: max wait time; rep: service estimate */
679 __u32 pb_service_time; /* rep: server arrival to reply in seconds */
680 __u32 pb_limit; /* rep: dynamic DLM LRU lock count limit */
681 __u64 pb_slv; /* rep: dynamic DLM LRU server lock volume */
682 /* VBR: rep: previous pb_version(s) of objects modified by this RPC */
683 __u64 pb_pre_versions[PTLRPC_NUM_VERSIONS];
684 __u64 pb_mbits; /**< match bits for bulk request */
685 /* padding for future needs - fix lustre_swab_ptlrpc_body() also */
686 __u64 pb_padding64_0;
687 __u64 pb_padding64_1;
688 __u64 pb_padding64_2;
689 char pb_jobid[LUSTRE_JOBID_SIZE]; /* req: ASCII jobid from env + NUL */
691 #define ptlrpc_body ptlrpc_body_v3
693 struct ptlrpc_body_v2 {
694 struct lustre_handle pb_handle;
699 __u64 pb_last_xid; /* highest replied XID without lower unreplied XID */
700 __u16 pb_tag; /* virtual slot idx for multiple modifying RPCs */
703 __u64 pb_last_committed;
708 __u32 pb_timeout; /* for req, the deadline, for rep, the service est */
709 __u32 pb_service_time; /* for rep, actual service time, also used for
710 net_latency of req */
713 /* VBR: pre-versions */
714 __u64 pb_pre_versions[PTLRPC_NUM_VERSIONS];
715 __u64 pb_mbits; /**< unused in V2 */
716 /* padding for future needs */
717 __u64 pb_padding64_0;
718 __u64 pb_padding64_1;
719 __u64 pb_padding64_2;
722 /* message body offset for lustre_msg_v2 */
723 /* ptlrpc body offset in all request/reply messages */
724 #define MSG_PTLRPC_BODY_OFF 0
726 /* normal request/reply message record offset */
727 #define REQ_REC_OFF 1
728 #define REPLY_REC_OFF 1
730 /* ldlm request message body offset */
731 #define DLM_LOCKREQ_OFF 1 /* lockreq offset */
732 #define DLM_REQ_REC_OFF 2 /* normal dlm request record offset */
734 /* ldlm intent lock message body offset */
735 #define DLM_INTENT_IT_OFF 2 /* intent lock it offset */
736 #define DLM_INTENT_REC_OFF 3 /* intent lock record offset */
738 /* ldlm reply message body offset */
739 #define DLM_LOCKREPLY_OFF 1 /* lockrep offset */
740 #define DLM_REPLY_REC_OFF 2 /* reply record offset */
742 /** only use in req->rq_{req,rep}_swab_mask */
743 #define MSG_PTLRPC_HEADER_OFF 31
746 #define OBD_CONNECT_RDONLY 0x1ULL /*client has read-only access*/
747 #define OBD_CONNECT_INDEX 0x2ULL /*connect specific LOV idx */
748 #define OBD_CONNECT_MDS 0x4ULL /*connect from MDT to OST */
749 #define OBD_CONNECT_GRANT 0x8ULL /*OSC gets grant at connect */
750 #define OBD_CONNECT_SRVLOCK 0x10ULL /*server takes locks for cli */
751 #define OBD_CONNECT_VERSION 0x20ULL /*Lustre versions in ocd */
752 #define OBD_CONNECT_REQPORTAL 0x40ULL /*Separate non-IO req portal */
753 #define OBD_CONNECT_ACL 0x80ULL /*access control lists */
754 #define OBD_CONNECT_XATTR 0x100ULL /*client use extended attr */
755 #define OBD_CONNECT_LARGE_ACL 0x200ULL /* more than 32 ACL entries */
756 #define OBD_CONNECT_TRUNCLOCK 0x400ULL /*locks on server for punch */
757 #define OBD_CONNECT_TRANSNO 0x800ULL /*replay sends init transno */
758 #define OBD_CONNECT_IBITS 0x1000ULL /* not checked in 2.11+ */
759 #define OBD_CONNECT_BARRIER 0x2000ULL /* write barrier */
760 #define OBD_CONNECT_ATTRFID 0x4000ULL /*Server can GetAttr By Fid*/
761 #define OBD_CONNECT_NODEVOH 0x8000ULL /*No open hndl on specl nodes*/
762 #define OBD_CONNECT_RMT_CLIENT 0x10000ULL /* Remote client, never used
763 * in production. Removed in
764 * 2.9. Keep this flag to
767 #define OBD_CONNECT_RMT_CLIENT_FORCE 0x20000ULL /* Remote client by force,
768 * never used in production.
769 * Removed in 2.9. Keep this
770 * flag to avoid reusing.
772 #define OBD_CONNECT_BRW_SIZE 0x40000ULL /*Max bytes per rpc */
773 #define OBD_CONNECT_QUOTA64 0x80000ULL /*Not used since 2.4 */
774 #define OBD_CONNECT_MDS_CAPA 0x100000ULL /*MDS capability */
775 #define OBD_CONNECT_OSS_CAPA 0x200000ULL /*OSS capability */
776 #define OBD_CONNECT_CANCELSET 0x400000ULL /*Early batched cancels. */
777 #define OBD_CONNECT_SOM 0x800000ULL /*Size on MDS */
778 #define OBD_CONNECT_AT 0x1000000ULL /*client uses AT */
779 #define OBD_CONNECT_LRU_RESIZE 0x2000000ULL /*LRU resize feature. */
780 #define OBD_CONNECT_MDS_MDS 0x4000000ULL /*MDS-MDS connection */
781 #define OBD_CONNECT_REAL 0x8000000ULL /* obsolete since 2.8 */
782 #define OBD_CONNECT_CHANGE_QS 0x10000000ULL /*Not used since 2.4 */
783 #define OBD_CONNECT_CKSUM 0x20000000ULL /*support several cksum algos*/
784 #define OBD_CONNECT_FID 0x40000000ULL /*FID is supported by server */
785 #define OBD_CONNECT_VBR 0x80000000ULL /*version based recovery */
786 #define OBD_CONNECT_LOV_V3 0x100000000ULL /*client supports LOV v3 EA */
787 #define OBD_CONNECT_GRANT_SHRINK 0x200000000ULL /* support grant shrink */
788 #define OBD_CONNECT_SKIP_ORPHAN 0x400000000ULL /* don't reuse orphan objids */
789 #define OBD_CONNECT_MAX_EASIZE 0x800000000ULL /* preserved for large EA */
790 #define OBD_CONNECT_FULL20 0x1000000000ULL /* it is 2.0 client */
791 #define OBD_CONNECT_LAYOUTLOCK 0x2000000000ULL /* client uses layout lock */
792 #define OBD_CONNECT_64BITHASH 0x4000000000ULL /* client supports 64-bits
794 #define OBD_CONNECT_MAXBYTES 0x8000000000ULL /* max stripe size */
795 #define OBD_CONNECT_IMP_RECOV 0x10000000000ULL /* imp recovery support */
796 #define OBD_CONNECT_JOBSTATS 0x20000000000ULL /* jobid in ptlrpc_body */
797 #define OBD_CONNECT_UMASK 0x40000000000ULL /* create uses client umask */
798 #define OBD_CONNECT_EINPROGRESS 0x80000000000ULL /* client handles -EINPROGRESS
799 * RPC error properly */
800 #define OBD_CONNECT_GRANT_PARAM 0x100000000000ULL/* extra grant params used for
801 * finer space reservation */
802 #define OBD_CONNECT_FLOCK_OWNER 0x200000000000ULL /* for the fixed 1.8
803 * policy and 2.x server */
804 #define OBD_CONNECT_LVB_TYPE 0x400000000000ULL /* variable type of LVB */
805 #define OBD_CONNECT_NANOSEC_TIME 0x800000000000ULL /* nanosecond timestamps */
806 #define OBD_CONNECT_LIGHTWEIGHT 0x1000000000000ULL/* lightweight connection */
807 #define OBD_CONNECT_SHORTIO 0x2000000000000ULL/* short io */
808 #define OBD_CONNECT_PINGLESS 0x4000000000000ULL/* pings not required */
809 #define OBD_CONNECT_FLOCK_DEAD 0x8000000000000ULL/* improved flock deadlock detection */
810 #define OBD_CONNECT_DISP_STRIPE 0x10000000000000ULL/* create stripe disposition*/
811 #define OBD_CONNECT_OPEN_BY_FID 0x20000000000000ULL /* open by fid won't pack
813 #define OBD_CONNECT_LFSCK 0x40000000000000ULL/* support online LFSCK */
814 #define OBD_CONNECT_UNLINK_CLOSE 0x100000000000000ULL/* close file in unlink */
815 #define OBD_CONNECT_MULTIMODRPCS 0x200000000000000ULL /* support multiple modify
817 #define OBD_CONNECT_DIR_STRIPE 0x400000000000000ULL /* striped DNE dir */
818 #define OBD_CONNECT_SUBTREE 0x800000000000000ULL /* fileset mount */
819 #define OBD_CONNECT_LOCKAHEAD_OLD 0x1000000000000000ULL /* Old Cray lockahead */
821 /** bulk matchbits is sent within ptlrpc_body */
822 #define OBD_CONNECT_BULK_MBITS 0x2000000000000000ULL
823 #define OBD_CONNECT_OBDOPACK 0x4000000000000000ULL /* compact OUT obdo */
824 #define OBD_CONNECT_FLAGS2 0x8000000000000000ULL /* second flags word */
825 /* ocd_connect_flags2 flags */
826 #define OBD_CONNECT2_FILE_SECCTX 0x1ULL /* set file security context at create */
827 #define OBD_CONNECT2_LOCKAHEAD 0x2ULL /* ladvise lockahead v2 */
828 #define OBD_CONNECT2_DIR_MIGRATE 0x4ULL /* migrate striped dir */
829 #define OBD_CONNECT2_SUM_STATFS 0x8ULL /* MDT return aggregated stats */
830 #define OBD_CONNECT2_OVERSTRIPING 0x10ULL /* OST overstriping support */
831 #define OBD_CONNECT2_FLR 0x20ULL /* FLR support */
832 #define OBD_CONNECT2_WBC_INTENTS 0x40ULL /* create/unlink/... intents for wbc, also operations under client-held parent locks */
833 #define OBD_CONNECT2_LOCK_CONVERT 0x80ULL /* IBITS lock convert support */
834 #define OBD_CONNECT2_ARCHIVE_ID_ARRAY 0x100ULL /* store HSM archive_id in array */
835 #define OBD_CONNECT2_INC_XID 0x200ULL /* Increasing xid */
836 #define OBD_CONNECT2_SELINUX_POLICY 0x400ULL /* has client SELinux policy */
837 #define OBD_CONNECT2_LSOM 0x800ULL /* LSOM support */
838 #define OBD_CONNECT2_PCC 0x1000ULL /* Persistent Client Cache */
839 #define OBD_CONNECT2_CRUSH 0x2000ULL /* crush hash striped directory */
840 #define OBD_CONNECT2_ASYNC_DISCARD 0x4000ULL /* support async DoM data discard */
841 #define OBD_CONNECT2_ENCRYPT 0x8000ULL /* client-to-disk encrypt */
843 * Please DO NOT add flag values here before first ensuring that this same
844 * flag value is not in use on some other branch. Please clear any such
845 * changes with senior engineers before starting to use a new flag. Then,
846 * submit a small patch against EVERY branch that ONLY adds the new flag,
847 * updates obd_connect_names[], adds the flag to check_obd_connect_data(),
848 * and updates wiretests accordingly, so it can be approved and landed easily
849 * to reserve the flag for future use.
852 /* The MNE_SWAB flag is overloading the MDS_MDS bit only for the MGS
853 * connection. It is a temporary bug fix for Imperative Recovery interop
854 * between 2.2 and 2.3 x86/ppc nodes, and can be removed when interop for
855 * 2.2 clients/servers is no longer needed. LU-1252/LU-1644. */
856 #define OBD_CONNECT_MNE_SWAB OBD_CONNECT_MDS_MDS
858 #define OCD_HAS_FLAG(ocd, flg) \
859 (!!((ocd)->ocd_connect_flags & OBD_CONNECT_##flg))
862 #ifdef HAVE_LRU_RESIZE_SUPPORT
863 #define LRU_RESIZE_CONNECT_FLAG OBD_CONNECT_LRU_RESIZE
865 #define LRU_RESIZE_CONNECT_FLAG 0
868 #define MDT_CONNECT_SUPPORTED (OBD_CONNECT_RDONLY | OBD_CONNECT_VERSION | \
869 OBD_CONNECT_ACL | OBD_CONNECT_XATTR | \
870 OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH | \
871 OBD_CONNECT_ATTRFID | OBD_CONNECT_CANCELSET | \
872 OBD_CONNECT_AT | OBD_CONNECT_BRW_SIZE | \
873 OBD_CONNECT_MDS_MDS | OBD_CONNECT_FID | \
874 LRU_RESIZE_CONNECT_FLAG | OBD_CONNECT_VBR | \
875 OBD_CONNECT_LOV_V3 | OBD_CONNECT_FULL20 | \
876 OBD_CONNECT_64BITHASH | OBD_CONNECT_JOBSTATS | \
877 OBD_CONNECT_EINPROGRESS | \
878 OBD_CONNECT_LIGHTWEIGHT | OBD_CONNECT_UMASK | \
879 OBD_CONNECT_LVB_TYPE | OBD_CONNECT_LAYOUTLOCK |\
880 OBD_CONNECT_PINGLESS | OBD_CONNECT_MAX_EASIZE |\
881 OBD_CONNECT_FLOCK_DEAD | \
882 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK | \
883 OBD_CONNECT_OPEN_BY_FID | \
884 OBD_CONNECT_DIR_STRIPE | OBD_CONNECT_GRANT | \
885 OBD_CONNECT_TRUNCLOCK | OBD_CONNECT_SRVLOCK | \
886 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_CKSUM | \
887 OBD_CONNECT_MULTIMODRPCS | \
888 OBD_CONNECT_SUBTREE | OBD_CONNECT_LARGE_ACL | \
889 OBD_CONNECT_GRANT_PARAM | \
890 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2)
892 #define MDT_CONNECT_SUPPORTED2 (OBD_CONNECT2_FILE_SECCTX | \
893 OBD_CONNECT2_DIR_MIGRATE | \
894 OBD_CONNECT2_SUM_STATFS | \
895 OBD_CONNECT2_OVERSTRIPING | \
897 OBD_CONNECT2_LOCK_CONVERT | \
898 OBD_CONNECT2_ARCHIVE_ID_ARRAY | \
899 OBD_CONNECT2_INC_XID | \
900 OBD_CONNECT2_SELINUX_POLICY | \
901 OBD_CONNECT2_LSOM | \
902 OBD_CONNECT2_ASYNC_DISCARD | \
905 #define OST_CONNECT_SUPPORTED (OBD_CONNECT_SRVLOCK | OBD_CONNECT_GRANT | \
906 OBD_CONNECT_REQPORTAL | OBD_CONNECT_VERSION | \
907 OBD_CONNECT_TRUNCLOCK | OBD_CONNECT_INDEX | \
908 OBD_CONNECT_BRW_SIZE | OBD_CONNECT_CANCELSET | \
909 OBD_CONNECT_AT | LRU_RESIZE_CONNECT_FLAG | \
910 OBD_CONNECT_CKSUM | OBD_CONNECT_VBR | \
911 OBD_CONNECT_MDS | OBD_CONNECT_SKIP_ORPHAN | \
912 OBD_CONNECT_GRANT_SHRINK | OBD_CONNECT_FULL20 |\
913 OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES | \
914 OBD_CONNECT_MAX_EASIZE | \
915 OBD_CONNECT_EINPROGRESS | \
916 OBD_CONNECT_JOBSTATS | \
917 OBD_CONNECT_LIGHTWEIGHT | OBD_CONNECT_LVB_TYPE|\
918 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_FID | \
919 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK | \
920 OBD_CONNECT_BULK_MBITS | \
921 OBD_CONNECT_GRANT_PARAM | \
922 OBD_CONNECT_SHORTIO | OBD_CONNECT_FLAGS2)
924 #define OST_CONNECT_SUPPORTED2 (OBD_CONNECT2_LOCKAHEAD | OBD_CONNECT2_INC_XID)
926 #define ECHO_CONNECT_SUPPORTED (OBD_CONNECT_FID)
927 #define ECHO_CONNECT_SUPPORTED2 0
929 #define MGS_CONNECT_SUPPORTED (OBD_CONNECT_VERSION | OBD_CONNECT_AT | \
930 OBD_CONNECT_FULL20 | OBD_CONNECT_IMP_RECOV | \
931 OBD_CONNECT_MNE_SWAB | OBD_CONNECT_PINGLESS |\
932 OBD_CONNECT_BULK_MBITS | OBD_CONNECT_BARRIER)
934 #define MGS_CONNECT_SUPPORTED2 0
936 /* Features required for this version of the client to work with server */
937 #define CLIENT_CONNECT_MDT_REQD (OBD_CONNECT_FID | \
938 OBD_CONNECT_ATTRFID | \
941 /* This structure is used for both request and reply.
943 * If we eventually have separate connect data for different types, which we
944 * almost certainly will, then perhaps we stick a union in here. */
945 struct obd_connect_data {
946 __u64 ocd_connect_flags; /* OBD_CONNECT_* per above */
947 __u32 ocd_version; /* lustre release version number */
948 __u32 ocd_grant; /* initial cache grant amount (bytes) */
949 __u32 ocd_index; /* LOV index to connect to */
950 __u32 ocd_brw_size; /* Maximum BRW size in bytes */
951 __u64 ocd_ibits_known; /* inode bits this client understands */
952 __u8 ocd_grant_blkbits; /* log2 of the backend filesystem blocksize */
953 __u8 ocd_grant_inobits; /* log2 of the per-inode space consumption */
954 __u16 ocd_grant_tax_kb; /* extent insertion overhead, in 1K blocks */
955 __u32 ocd_grant_max_blks;/* maximum number of blocks per extent */
956 __u64 ocd_transno; /* first transno from client to be replayed */
957 __u32 ocd_group; /* MDS group on OST */
958 __u32 ocd_cksum_types; /* supported checksum algorithms */
959 __u32 ocd_max_easize; /* How big LOV EA can be on MDS */
960 __u32 ocd_instance; /* instance # of this target */
961 __u64 ocd_maxbytes; /* Maximum stripe size in bytes */
962 /* Fields after ocd_maxbytes are only accessible by the receiver
963 * if the corresponding flag in ocd_connect_flags is set. Accessing
964 * any field after ocd_maxbytes on the receiver without a valid flag
965 * may result in out-of-bound memory access and kernel oops. */
966 __u16 ocd_maxmodrpcs; /* Maximum modify RPCs in parallel */
967 __u16 padding0; /* added 2.1.0. also fix lustre_swab_connect */
968 __u32 padding1; /* added 2.1.0. also fix lustre_swab_connect */
969 __u64 ocd_connect_flags2;
970 __u64 padding3; /* added 2.1.0. also fix lustre_swab_connect */
971 __u64 padding4; /* added 2.1.0. also fix lustre_swab_connect */
972 __u64 padding5; /* added 2.1.0. also fix lustre_swab_connect */
973 __u64 padding6; /* added 2.1.0. also fix lustre_swab_connect */
974 __u64 padding7; /* added 2.1.0. also fix lustre_swab_connect */
975 __u64 padding8; /* added 2.1.0. also fix lustre_swab_connect */
976 __u64 padding9; /* added 2.1.0. also fix lustre_swab_connect */
977 __u64 paddingA; /* added 2.1.0. also fix lustre_swab_connect */
978 __u64 paddingB; /* added 2.1.0. also fix lustre_swab_connect */
979 __u64 paddingC; /* added 2.1.0. also fix lustre_swab_connect */
980 __u64 paddingD; /* added 2.1.0. also fix lustre_swab_connect */
981 __u64 paddingE; /* added 2.1.0. also fix lustre_swab_connect */
982 __u64 paddingF; /* added 2.1.0. also fix lustre_swab_connect */
985 * Please DO NOT use any fields here before first ensuring that this same
986 * field is not in use on some other branch. Please clear any such changes
987 * with senior engineers before starting to use a new field. Then, submit
988 * a small patch against EVERY branch that ONLY adds the new field along with
989 * the matching OBD_CONNECT flag, so that can be approved and landed easily to
990 * reserve the flag for future use. */
993 * Supported checksum algorithms. Up to 32 checksum types are supported.
994 * (32-bit mask stored in obd_connect_data::ocd_cksum_types)
995 * Please update DECLARE_CKSUM_NAME in obd_cksum.h when adding a new
996 * algorithm and also the OBD_FL_CKSUM* flags, OBD_CKSUM_ALL flag,
997 * OBD_FL_CKSUM_ALL flag and potentially OBD_CKSUM_T10_ALL flag.
1000 OBD_CKSUM_CRC32 = 0x00000001,
1001 OBD_CKSUM_ADLER = 0x00000002,
1002 OBD_CKSUM_CRC32C = 0x00000004,
1003 OBD_CKSUM_RESERVED = 0x00000008,
1004 OBD_CKSUM_T10IP512 = 0x00000010,
1005 OBD_CKSUM_T10IP4K = 0x00000020,
1006 OBD_CKSUM_T10CRC512 = 0x00000040,
1007 OBD_CKSUM_T10CRC4K = 0x00000080,
1010 #define OBD_CKSUM_T10_ALL (OBD_CKSUM_T10IP512 | OBD_CKSUM_T10IP4K | \
1011 OBD_CKSUM_T10CRC512 | OBD_CKSUM_T10CRC4K)
1013 #define OBD_CKSUM_ALL (OBD_CKSUM_CRC32 | OBD_CKSUM_ADLER | OBD_CKSUM_CRC32C | \
1017 * The default checksum algorithm used on top of T10PI GRD tags for RPC.
1018 * Considering that the checksum-of-checksums is only computing CRC32 on a
1019 * 4KB chunk of GRD tags for a 1MB RPC for 512B sectors, or 16KB of GRD
1020 * tags for 16MB of 4KB sectors, this is only 1/256 or 1/1024 of the
1021 * total data being checksummed, so the checksum type used here should not
1022 * affect overall system performance noticeably.
1024 #define OBD_CKSUM_T10_TOP OBD_CKSUM_ADLER
1027 * OST requests: OBDO & OBD request records
1032 OST_REPLY = 0, /* reply ? */
1048 OST_QUOTACHECK = 18, /* not used since 2.4 */
1050 OST_QUOTA_ADJUST_QUNIT = 20, /* not used since 2.4 */
1053 OST_LAST_OPC /* must be < 33 to avoid MDS_GETATTR */
1055 #define OST_FIRST_OPC OST_REPLY
1058 OBD_FL_INLINEDATA = 0x00000001,
1059 OBD_FL_OBDMDEXISTS = 0x00000002,
1060 OBD_FL_DELORPHAN = 0x00000004, /* if set in o_flags delete orphans */
1061 OBD_FL_NORPC = 0x00000008, /* set in o_flags do in OSC not OST */
1062 OBD_FL_IDONLY = 0x00000010, /* set in o_flags only adjust obj id*/
1063 OBD_FL_RECREATE_OBJS= 0x00000020, /* recreate missing obj */
1064 OBD_FL_DEBUG_CHECK = 0x00000040, /* echo client/server debug check */
1065 OBD_FL_NO_PRJQUOTA = 0x00000080, /* the object's project is over
1067 OBD_FL_NO_USRQUOTA = 0x00000100, /* the object's owner is over quota */
1068 OBD_FL_NO_GRPQUOTA = 0x00000200, /* the object's group is over quota */
1069 OBD_FL_CREATE_CROW = 0x00000400, /* object should be create on write */
1070 OBD_FL_SRVLOCK = 0x00000800, /* delegate DLM locking to server */
1071 OBD_FL_CKSUM_CRC32 = 0x00001000, /* CRC32 checksum type */
1072 OBD_FL_CKSUM_ADLER = 0x00002000, /* ADLER checksum type */
1073 OBD_FL_CKSUM_CRC32C = 0x00004000, /* CRC32C checksum type */
1074 OBD_FL_CKSUM_T10IP512 = 0x00005000, /* T10PI IP cksum, 512B sector */
1075 OBD_FL_CKSUM_T10IP4K = 0x00006000, /* T10PI IP cksum, 4KB sector */
1076 OBD_FL_CKSUM_T10CRC512 = 0x00007000, /* T10PI CRC cksum, 512B sector */
1077 OBD_FL_CKSUM_T10CRC4K = 0x00008000, /* T10PI CRC cksum, 4KB sector */
1078 OBD_FL_CKSUM_RSVD3 = 0x00010000, /* for future cksum types */
1079 OBD_FL_SHRINK_GRANT = 0x00020000, /* object shrink the grant */
1080 OBD_FL_MMAP = 0x00040000, /* object is mmapped on the client.
1081 * XXX: obsoleted - reserved for old
1082 * clients prior than 2.2 */
1083 OBD_FL_RECOV_RESEND = 0x00080000, /* recoverable resent */
1084 OBD_FL_NOSPC_BLK = 0x00100000, /* no more block space on OST */
1085 OBD_FL_FLUSH = 0x00200000, /* flush pages on the OST */
1086 OBD_FL_SHORT_IO = 0x00400000, /* short io request */
1087 /* OBD_FL_LOCAL_MASK = 0xF0000000, was local-only flags until 2.10 */
1090 * Note that while the original checksum values were separate bits,
1091 * in 2.x we can actually allow all values from 1-31. T10-PI checksum
1092 * types already use values which are not separate bits.
1094 OBD_FL_CKSUM_ALL = OBD_FL_CKSUM_CRC32 | OBD_FL_CKSUM_ADLER |
1095 OBD_FL_CKSUM_CRC32C | OBD_FL_CKSUM_T10IP512 |
1096 OBD_FL_CKSUM_T10IP4K | OBD_FL_CKSUM_T10CRC512 |
1097 OBD_FL_CKSUM_T10CRC4K,
1099 OBD_FL_NO_QUOTA_ALL = OBD_FL_NO_USRQUOTA | OBD_FL_NO_GRPQUOTA |
1104 * All LOV EA magics should have the same postfix, if some new version
1105 * Lustre instroduces new LOV EA magic, then when down-grade to an old
1106 * Lustre, even though the old version system does not recognizes such
1107 * new magic, it still can distinguish the corrupted cases by checking
1108 * the magic's postfix.
1110 #define LOV_MAGIC_MAGIC 0x0BD0
1111 #define LOV_MAGIC_MASK 0xFFFF
1113 #define LOV_MAGIC_V1 (0x0BD10000 | LOV_MAGIC_MAGIC)
1114 #define LOV_MAGIC_JOIN_V1 (0x0BD20000 | LOV_MAGIC_MAGIC)
1115 #define LOV_MAGIC_V3 (0x0BD30000 | LOV_MAGIC_MAGIC)
1116 #define LOV_MAGIC_MIGRATE (0x0BD40000 | LOV_MAGIC_MAGIC)
1117 /* reserved for specifying OSTs */
1118 #define LOV_MAGIC_SPECIFIC (0x0BD50000 | LOV_MAGIC_MAGIC)
1119 #define LOV_MAGIC LOV_MAGIC_V1
1120 #define LOV_MAGIC_COMP_V1 (0x0BD60000 | LOV_MAGIC_MAGIC)
1121 #define LOV_MAGIC_FOREIGN (0x0BD70000 | LOV_MAGIC_MAGIC)
1122 #define LOV_MAGIC_SEL (0x0BD80000 | LOV_MAGIC_MAGIC)
1125 * magic for fully defined striping
1126 * the idea is that we should have different magics for striping "hints"
1127 * (struct lov_user_md_v[13]) and defined ready-to-use striping (struct
1128 * lov_mds_md_v[13]). at the moment the magics are used in wire protocol,
1129 * we can't just change it w/o long way preparation, but we still need a
1130 * mechanism to allow LOD to differentiate hint versus ready striping.
1131 * so, at the moment we do a trick: MDT knows what to expect from request
1132 * depending on the case (replay uses ready striping, non-replay req uses
1133 * hints), so MDT replaces magic with appropriate one and now LOD can
1134 * easily understand what's inside -bzzz
1136 * those *_DEF magics are only used on server side internally, they
1137 * won't be put on wire or disk.
1139 #define LOV_MAGIC_DEFINED 0x10000000
1140 #define LOV_MAGIC_V1_DEFINED (LOV_MAGIC_DEFINED | LOV_MAGIC_V1)
1141 #define LOV_MAGIC_V3_DEFINED (LOV_MAGIC_DEFINED | LOV_MAGIC_V3)
1142 #define LOV_MAGIC_COMP_V1_DEFINED (LOV_MAGIC_DEFINED | LOV_MAGIC_COMP_V1)
1144 #define lov_pattern(pattern) (pattern & ~LOV_PATTERN_F_MASK)
1145 #define lov_pattern_flags(pattern) (pattern & LOV_PATTERN_F_MASK)
1147 #define lov_ost_data lov_ost_data_v1
1148 struct lov_ost_data_v1 { /* per-stripe data structure (little-endian)*/
1149 struct ost_id l_ost_oi; /* OST object ID */
1150 __u32 l_ost_gen; /* generation of this l_ost_idx */
1151 __u32 l_ost_idx; /* OST index in LOV (lov_tgt_desc->tgts) */
1154 #define lov_mds_md lov_mds_md_v1
1155 struct lov_mds_md_v1 { /* LOV EA mds/wire data (little-endian) */
1156 __u32 lmm_magic; /* magic number = LOV_MAGIC_V1 */
1157 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
1158 struct ost_id lmm_oi; /* LOV object ID */
1159 __u32 lmm_stripe_size; /* size of stripe in bytes */
1160 /* lmm_stripe_count used to be __u32 */
1161 __u16 lmm_stripe_count; /* num stripes in use for this object */
1162 __u16 lmm_layout_gen; /* layout generation number */
1163 struct lov_ost_data_v1 lmm_objects[0]; /* per-stripe data */
1166 #define MAX_MD_SIZE_OLD (sizeof(struct lov_mds_md) + \
1167 4 * sizeof(struct lov_ost_data))
1168 #define MAX_MD_SIZE (sizeof(struct lov_comp_md_v1) + \
1169 4 * (sizeof(struct lov_comp_md_entry_v1) + \
1171 #define MIN_MD_SIZE (sizeof(struct lov_mds_md) + 1 * sizeof(struct lov_ost_data))
1173 /* This is the default MDT reply size allocated, should the striping be bigger,
1174 * it will be reallocated in mdt_fix_reply.
1175 * 100 stripes is a bit less than 2.5k of data */
1176 #define DEF_REP_MD_SIZE (sizeof(struct lov_mds_md) + \
1177 100 * sizeof(struct lov_ost_data))
1179 #define XATTR_NAME_ACL_ACCESS "system.posix_acl_access"
1180 #define XATTR_NAME_ACL_DEFAULT "system.posix_acl_default"
1181 #define XATTR_USER_PREFIX "user."
1182 #define XATTR_TRUSTED_PREFIX "trusted."
1183 #define XATTR_SECURITY_PREFIX "security."
1185 #define XATTR_NAME_SOM "trusted.som"
1186 #define XATTR_NAME_LOV "trusted.lov"
1187 #define XATTR_NAME_LMA "trusted.lma"
1188 #define XATTR_NAME_LMV "trusted.lmv"
1189 #define XATTR_NAME_DEFAULT_LMV "trusted.dmv"
1190 #define XATTR_NAME_LINK "trusted.link"
1191 #define XATTR_NAME_FID "trusted.fid"
1192 #define XATTR_NAME_VERSION "trusted.version"
1193 #define XATTR_NAME_SOM "trusted.som"
1194 #define XATTR_NAME_HSM "trusted.hsm"
1195 #define XATTR_NAME_LFSCK_BITMAP "trusted.lfsck_bitmap"
1196 #define XATTR_NAME_DUMMY "trusted.dummy"
1198 #define XATTR_NAME_LFSCK_NAMESPACE "trusted.lfsck_ns"
1199 #define XATTR_NAME_MAX_LEN 32 /* increase this, if there is longer name. */
1201 struct lov_mds_md_v3 { /* LOV EA mds/wire data (little-endian) */
1202 __u32 lmm_magic; /* magic number = LOV_MAGIC_V3 */
1203 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
1204 struct ost_id lmm_oi; /* LOV object ID */
1205 __u32 lmm_stripe_size; /* size of stripe in bytes */
1206 /* lmm_stripe_count used to be __u32 */
1207 __u16 lmm_stripe_count; /* num stripes in use for this object */
1208 __u16 lmm_layout_gen; /* layout generation number */
1209 char lmm_pool_name[LOV_MAXPOOLNAME + 1]; /* must be 32bit aligned */
1210 struct lov_ost_data_v1 lmm_objects[0]; /* per-stripe data */
1213 static inline __u32 lov_mds_md_size(__u16 stripes, __u32 lmm_magic)
1215 if (stripes == (__u16)-1)
1218 if (lmm_magic == LOV_MAGIC_V3)
1219 return sizeof(struct lov_mds_md_v3) +
1220 stripes * sizeof(struct lov_ost_data_v1);
1222 return sizeof(struct lov_mds_md_v1) +
1223 stripes * sizeof(struct lov_ost_data_v1);
1227 lov_mds_md_max_stripe_count(__kernel_size_t buf_size, __u32 lmm_magic)
1229 switch (lmm_magic) {
1230 case LOV_MAGIC_V1: {
1231 struct lov_mds_md_v1 lmm;
1233 if (buf_size < sizeof(lmm))
1236 return (buf_size - sizeof(lmm)) / sizeof(lmm.lmm_objects[0]);
1238 case LOV_MAGIC_V3: {
1239 struct lov_mds_md_v3 lmm;
1241 if (buf_size < sizeof(lmm))
1244 return (buf_size - sizeof(lmm)) / sizeof(lmm.lmm_objects[0]);
1251 #define OBD_MD_FLID (0x00000001ULL) /* object ID */
1252 #define OBD_MD_FLATIME (0x00000002ULL) /* access time */
1253 #define OBD_MD_FLMTIME (0x00000004ULL) /* data modification time */
1254 #define OBD_MD_FLCTIME (0x00000008ULL) /* change time */
1255 #define OBD_MD_FLSIZE (0x00000010ULL) /* size */
1256 #define OBD_MD_FLBLOCKS (0x00000020ULL) /* allocated blocks count */
1257 #define OBD_MD_FLBLKSZ (0x00000040ULL) /* block size */
1258 #define OBD_MD_FLMODE (0x00000080ULL) /* access bits (mode & ~S_IFMT) */
1259 #define OBD_MD_FLTYPE (0x00000100ULL) /* object type (mode & S_IFMT) */
1260 #define OBD_MD_FLUID (0x00000200ULL) /* user ID */
1261 #define OBD_MD_FLGID (0x00000400ULL) /* group ID */
1262 #define OBD_MD_FLFLAGS (0x00000800ULL) /* flags word */
1263 #define OBD_MD_DOM_SIZE (0X00001000ULL) /* Data-on-MDT component size */
1264 #define OBD_MD_FLNLINK (0x00002000ULL) /* link count */
1265 #define OBD_MD_FLPARENT (0x00004000ULL) /* parent FID */
1266 #define OBD_MD_LAYOUT_VERSION (0x00008000ULL) /* OST object layout version */
1267 #define OBD_MD_FLRDEV (0x00010000ULL) /* device number */
1268 #define OBD_MD_FLEASIZE (0x00020000ULL) /* extended attribute data */
1269 #define OBD_MD_LINKNAME (0x00040000ULL) /* symbolic link target */
1270 #define OBD_MD_FLHANDLE (0x00080000ULL) /* file/lock handle */
1271 #define OBD_MD_FLCKSUM (0x00100000ULL) /* bulk data checksum */
1272 /* OBD_MD_FLQOS (0x00200000ULL) has never been used */
1273 /* OBD_MD_FLCOOKIE (0x00800000ULL) obsolete in 2.8 */
1274 #define OBD_MD_FLPRJQUOTA (0x00400000ULL) /* over quota flags sent from ost */
1275 #define OBD_MD_FLGROUP (0x01000000ULL) /* group */
1276 #define OBD_MD_FLFID (0x02000000ULL) /* ->ost write inline fid */
1277 /* OBD_MD_FLEPOCH (0x04000000ULL) obsolete 2.7.50 */
1278 /* ->mds if epoch opens or closes */
1279 #define OBD_MD_FLGRANT (0x08000000ULL) /* ost preallocation space grant */
1280 #define OBD_MD_FLDIREA (0x10000000ULL) /* dir's extended attribute data */
1281 #define OBD_MD_FLUSRQUOTA (0x20000000ULL) /* over quota flags sent from ost */
1282 #define OBD_MD_FLGRPQUOTA (0x40000000ULL) /* over quota flags sent from ost */
1283 #define OBD_MD_FLMODEASIZE (0x80000000ULL) /* EA size will be changed */
1285 #define OBD_MD_MDS (0x0000000100000000ULL) /* where an inode lives on */
1286 /* OBD_MD_REINT (0x0000000200000000ULL) obsolete 1.8 */
1287 #define OBD_MD_MEA (0x0000000400000000ULL) /* CMD split EA */
1288 #define OBD_MD_TSTATE (0x0000000800000000ULL) /* transient state field */
1290 #define OBD_MD_FLXATTR (0x0000001000000000ULL) /* xattr */
1291 #define OBD_MD_FLXATTRLS (0x0000002000000000ULL) /* xattr list */
1292 #define OBD_MD_FLXATTRRM (0x0000004000000000ULL) /* xattr remove */
1293 #define OBD_MD_FLACL (0x0000008000000000ULL) /* ACL */
1294 #define OBD_MD_FLAGSTATFS (0x0000010000000000ULL) /* aggregated statfs */
1295 /* OBD_MD_FLMDSCAPA (0x0000020000000000ULL) obsolete 2.7.54 */
1296 /* OBD_MD_FLOSSCAPA (0x0000040000000000ULL) obsolete 2.7.54 */
1297 /* OBD_MD_FLCKSPLIT (0x0000080000000000ULL) obsolete 2.3.58*/
1298 #define OBD_MD_FLCROSSREF (0x0000100000000000ULL) /* Cross-ref case */
1299 #define OBD_MD_FLGETATTRLOCK (0x0000200000000000ULL) /* Get IOEpoch attributes
1300 * under lock; for xattr
1301 * requests means the
1302 * client holds the lock */
1303 #define OBD_MD_FLOBJCOUNT (0x0000400000000000ULL) /* for multiple destroy */
1305 #define OBD_MD_FLDATAVERSION (0x0010000000000000ULL) /* iversion sum */
1306 #define OBD_MD_CLOSE_INTENT_EXECED (0x0020000000000000ULL) /* close intent
1309 #define OBD_MD_DEFAULT_MEA (0x0040000000000000ULL) /* default MEA */
1310 #define OBD_MD_FLOSTLAYOUT (0x0080000000000000ULL) /* contain ost_layout */
1311 #define OBD_MD_FLPROJID (0x0100000000000000ULL) /* project ID */
1312 #define OBD_MD_SECCTX (0x0200000000000000ULL) /* embed security xattr */
1314 #define OBD_MD_FLLAZYSIZE (0x0400000000000000ULL) /* Lazy size */
1315 #define OBD_MD_FLLAZYBLOCKS (0x0800000000000000ULL) /* Lazy blocks */
1317 #define OBD_MD_FLALLQUOTA (OBD_MD_FLUSRQUOTA | \
1318 OBD_MD_FLGRPQUOTA | \
1321 #define OBD_MD_FLGETATTR (OBD_MD_FLID | OBD_MD_FLATIME | OBD_MD_FLMTIME | \
1322 OBD_MD_FLCTIME | OBD_MD_FLSIZE | OBD_MD_FLBLKSZ | \
1323 OBD_MD_FLMODE | OBD_MD_FLTYPE | OBD_MD_FLUID | \
1324 OBD_MD_FLGID | OBD_MD_FLFLAGS | OBD_MD_FLNLINK | \
1325 OBD_MD_FLPARENT | OBD_MD_FLRDEV | OBD_MD_FLGROUP | \
1328 #define OBD_MD_FLXATTRALL (OBD_MD_FLXATTR | OBD_MD_FLXATTRLS)
1330 /* don't forget obdo_fid which is way down at the bottom so it can
1331 * come after the definition of llog_cookie */
1335 HSS_CLEARMASK = 0x02,
1336 HSS_ARCHIVE_ID = 0x04,
1339 struct hsm_state_set {
1341 __u32 hss_archive_id;
1343 __u64 hss_clearmask;
1346 /* ost_body.data values for OST_BRW */
1348 #define OBD_BRW_READ 0x01
1349 #define OBD_BRW_WRITE 0x02
1350 #define OBD_BRW_RWMASK (OBD_BRW_READ | OBD_BRW_WRITE)
1351 #define OBD_BRW_NDELAY 0x04 /* Non-delay RPC should be issued for
1352 * this page. Non-delay RPCs have bit
1353 * rq_no_delay set. */
1354 #define OBD_BRW_SYNC 0x08 /* this page is a part of synchronous
1355 * transfer and is not accounted in
1357 #define OBD_BRW_CHECK 0x10
1358 #define OBD_BRW_FROM_GRANT 0x20 /* the osc manages this under llite */
1359 #define OBD_BRW_GRANTED 0x40 /* the ost manages this */
1360 /* OBD_BRW_NOCACHE is currently neither set nor tested */
1361 #define OBD_BRW_NOCACHE 0x80 /* this page is a part of non-cached IO */
1362 #define OBD_BRW_NOQUOTA 0x100
1363 #define OBD_BRW_SRVLOCK 0x200 /* Client holds no lock over this page */
1364 #define OBD_BRW_ASYNC 0x400 /* Server may delay commit to disk */
1365 #define OBD_BRW_MEMALLOC 0x800 /* Client runs in the "kswapd" context */
1366 #define OBD_BRW_OVER_USRQUOTA 0x1000 /* Running out of user quota */
1367 #define OBD_BRW_OVER_GRPQUOTA 0x2000 /* Running out of group quota */
1368 #define OBD_BRW_SOFT_SYNC 0x4000 /* This flag notifies the server
1369 * that the client is running low on
1370 * space for unstable pages; asking
1371 * it to sync quickly */
1372 #define OBD_BRW_OVER_PRJQUOTA 0x8000 /* Running out of project quota */
1373 #define OBD_BRW_RDMA_ONLY 0x20000 /* RPC contains RDMA-only pages*/
1375 #define OBD_BRW_OVER_ALLQUOTA (OBD_BRW_OVER_USRQUOTA | \
1376 OBD_BRW_OVER_GRPQUOTA | \
1377 OBD_BRW_OVER_PRJQUOTA)
1379 #define OBD_BRW_LOCAL1 0x80000000UL /*
1380 * osd-ldiskfs internal,
1381 * page mapped to real block
1384 #define OBD_BRW_LOCALS (OBD_BRW_LOCAL1)
1386 #define OBD_MAX_GRANT 0x7fffffffUL /* Max grant allowed to one client: 2 GiB */
1388 #define OBD_OBJECT_EOF LUSTRE_EOF
1390 #define OST_MIN_PRECREATE 32
1391 #define OST_MAX_PRECREATE 20000
1394 struct ost_id ioo_oid; /* object ID, if multi-obj BRW */
1395 __u32 ioo_max_brw; /* low 16 bits were o_mode before 2.4,
1396 * now (PTLRPC_BULK_OPS_COUNT - 1) in
1397 * high 16 bits in 2.4 and later */
1398 __u32 ioo_bufcnt; /* number of niobufs for this object */
1401 /* NOTE: IOOBJ_MAX_BRW_BITS defines the _offset_ of the max_brw field in
1402 * ioo_max_brw, NOT the maximum number of bits in PTLRPC_BULK_OPS_BITS.
1403 * That said, ioo_max_brw is a 32-bit field so the limit is also 16 bits. */
1404 #define IOOBJ_MAX_BRW_BITS 16
1405 #define ioobj_max_brw_get(ioo) (((ioo)->ioo_max_brw >> IOOBJ_MAX_BRW_BITS) + 1)
1406 #define ioobj_max_brw_set(ioo, num) \
1407 do { (ioo)->ioo_max_brw = ((num) - 1) << IOOBJ_MAX_BRW_BITS; } while (0)
1409 /* multiple of 8 bytes => can array */
1410 struct niobuf_remote {
1416 /* lock value block communicated between the filter and llite */
1418 /* OST_LVB_ERR_INIT is needed because the return code in rc is
1419 * negative, i.e. because ((MASK + rc) & MASK) != MASK. */
1420 #define OST_LVB_ERR_INIT 0xffbadbad80000000ULL
1421 #define OST_LVB_ERR_MASK 0xffbadbad00000000ULL
1422 #define OST_LVB_IS_ERR(blocks) \
1423 ((blocks & OST_LVB_ERR_MASK) == OST_LVB_ERR_MASK)
1424 #define OST_LVB_SET_ERR(blocks, rc) \
1425 do { blocks = OST_LVB_ERR_INIT + rc; } while (0)
1426 #define OST_LVB_GET_ERR(blocks) (int)(blocks - OST_LVB_ERR_INIT)
1449 * lquota data structures
1452 #ifndef QUOTABLOCK_BITS
1453 # define QUOTABLOCK_BITS LUSTRE_QUOTABLOCK_BITS
1456 #ifndef QUOTABLOCK_SIZE
1457 # define QUOTABLOCK_SIZE LUSTRE_QUOTABLOCK_SIZE
1461 # define toqb lustre_stoqb
1464 /* The lquota_id structure is an union of all the possible identifier types that
1465 * can be used with quota, this includes:
1468 * - a FID which can be used for per-directory quota in the future */
1470 struct lu_fid qid_fid; /* FID for per-directory quota */
1471 __u64 qid_uid; /* user identifier */
1472 __u64 qid_gid; /* group identifier */
1473 __u64 qid_projid; /* project identifier */
1476 /* quotactl management */
1477 struct obd_quotactl {
1479 __u32 qc_type; /* see Q_* flag below */
1482 struct obd_dqinfo qc_dqinfo;
1483 struct obd_dqblk qc_dqblk;
1486 #define Q_COPY(out, in, member) (out)->member = (in)->member
1488 #define QCTL_COPY(out, in) \
1490 Q_COPY(out, in, qc_cmd); \
1491 Q_COPY(out, in, qc_type); \
1492 Q_COPY(out, in, qc_id); \
1493 Q_COPY(out, in, qc_stat); \
1494 Q_COPY(out, in, qc_dqinfo); \
1495 Q_COPY(out, in, qc_dqblk); \
1498 /* Body of quota request used for quota acquire/release RPCs between quota
1499 * master (aka QMT) and slaves (ak QSD). */
1501 struct lu_fid qb_fid; /* FID of global index packing the pool ID
1502 * and type (data or metadata) as well as
1503 * the quota type (user or group). */
1504 union lquota_id qb_id; /* uid or gid or directory FID */
1505 __u32 qb_flags; /* see below */
1507 __u64 qb_count; /* acquire/release count (kbytes/inodes) */
1508 __u64 qb_usage; /* current slave usage (kbytes/inodes) */
1509 __u64 qb_slv_ver; /* slave index file version */
1510 struct lustre_handle qb_lockh; /* per-ID lock handle */
1511 struct lustre_handle qb_glb_lockh; /* global lock handle */
1512 __u64 qb_padding1[4];
1515 /* When the quota_body is used in the reply of quota global intent
1516 * lock (IT_QUOTA_CONN) reply, qb_fid contains slave index file FID. */
1517 #define qb_slv_fid qb_fid
1518 /* qb_usage is the current qunit (in kbytes/inodes) when quota_body is used in
1520 #define qb_qunit qb_usage
1522 #define QUOTA_DQACQ_FL_ACQ 0x1 /* acquire quota */
1523 #define QUOTA_DQACQ_FL_PREACQ 0x2 /* pre-acquire */
1524 #define QUOTA_DQACQ_FL_REL 0x4 /* release quota */
1525 #define QUOTA_DQACQ_FL_REPORT 0x8 /* report usage */
1527 /* Quota types currently supported */
1529 LQUOTA_TYPE_USR = 0x00, /* maps to USRQUOTA */
1530 LQUOTA_TYPE_GRP = 0x01, /* maps to GRPQUOTA */
1531 LQUOTA_TYPE_PRJ = 0x02, /* maps to PRJQUOTA */
1535 /* There are 2 different resource types on which a quota limit can be enforced:
1536 * - inodes on the MDTs
1537 * - blocks on the OSTs */
1539 LQUOTA_RES_MD = 0x01, /* skip 0 to avoid null oid in FID */
1540 LQUOTA_RES_DT = 0x02,
1542 LQUOTA_FIRST_RES = LQUOTA_RES_MD
1544 #define LQUOTA_NR_RES (LQUOTA_LAST_RES - LQUOTA_FIRST_RES + 1)
1547 * Space accounting support
1548 * Format of an accounting record, providing disk usage information for a given
1551 struct lquota_acct_rec { /* 16 bytes */
1552 __u64 bspace; /* current space in use */
1553 __u64 ispace; /* current # inodes in use */
1557 * Global quota index support
1558 * Format of a global record, providing global quota settings for a given quota
1561 struct lquota_glb_rec { /* 32 bytes */
1562 __u64 qbr_hardlimit; /* quota hard limit, in #inodes or kbytes */
1563 __u64 qbr_softlimit; /* quota soft limit, in #inodes or kbytes */
1564 __u64 qbr_time; /* grace time, in seconds */
1565 __u64 qbr_granted; /* how much is granted to slaves, in #inodes or
1570 * Slave index support
1571 * Format of a slave record, recording how much space is granted to a given
1574 struct lquota_slv_rec { /* 8 bytes */
1575 __u64 qsr_granted; /* space granted to the slave for the key=ID,
1576 * in #inodes or kbytes */
1579 /* Data structures associated with the quota locks */
1581 /* Glimpse descriptor used for the index & per-ID quota locks */
1582 struct ldlm_gl_lquota_desc {
1583 union lquota_id gl_id; /* quota ID subject to the glimpse */
1584 __u64 gl_flags; /* see LQUOTA_FL* below */
1585 __u64 gl_ver; /* new index version */
1586 __u64 gl_hardlimit; /* new hardlimit or qunit value */
1587 __u64 gl_softlimit; /* new softlimit */
1591 #define gl_qunit gl_hardlimit /* current qunit value used when
1592 * glimpsing per-ID quota locks */
1594 /* quota glimpse flags */
1595 #define LQUOTA_FL_EDQUOT 0x1 /* user/group out of quota space on QMT */
1597 /* LVB used with quota (global and per-ID) locks */
1599 __u64 lvb_flags; /* see LQUOTA_FL* above */
1600 __u64 lvb_id_may_rel; /* space that might be released later */
1601 __u64 lvb_id_rel; /* space released by the slave for this ID */
1602 __u64 lvb_id_qunit; /* current qunit value */
1606 /* LVB used with global quota lock */
1607 #define lvb_glb_ver lvb_id_may_rel /* current version of the global index */
1615 #define QUOTA_FIRST_OPC QUOTA_DQACQ
1624 MDS_GETATTR_NAME = 34,
1629 MDS_DISCONNECT = 39,
1632 MDS_PIN = 42, /* obsolete, never used in a release */
1633 MDS_UNPIN = 43, /* obsolete, never used in a release */
1635 MDS_DONE_WRITING = 45, /* obsolete since 2.8.0 */
1637 MDS_QUOTACHECK = 47, /* not used since 2.4 */
1640 MDS_SETXATTR = 50, /* obsolete, now it's MDS_REINT op */
1642 MDS_IS_SUBDIR = 52, /* obsolete, never used in a release */
1644 MDS_HSM_STATE_GET = 54,
1645 MDS_HSM_STATE_SET = 55,
1646 MDS_HSM_ACTION = 56,
1647 MDS_HSM_PROGRESS = 57,
1648 MDS_HSM_REQUEST = 58,
1649 MDS_HSM_CT_REGISTER = 59,
1650 MDS_HSM_CT_UNREGISTER = 60,
1651 MDS_SWAP_LAYOUTS = 61,
1656 #define MDS_FIRST_OPC MDS_GETATTR
1659 /* opcodes for object update */
1665 #define OUT_UPDATE_FIRST_OPC OUT_UPDATE
1685 /* the disposition of the intent outlines what was executed */
1686 #define DISP_IT_EXECD 0x00000001
1687 #define DISP_LOOKUP_EXECD 0x00000002
1688 #define DISP_LOOKUP_NEG 0x00000004
1689 #define DISP_LOOKUP_POS 0x00000008
1690 #define DISP_OPEN_CREATE 0x00000010
1691 #define DISP_OPEN_OPEN 0x00000020
1692 #define DISP_ENQ_COMPLETE 0x00400000 /* obsolete and unused */
1693 #define DISP_ENQ_OPEN_REF 0x00800000
1694 #define DISP_ENQ_CREATE_REF 0x01000000
1695 #define DISP_OPEN_LOCK 0x02000000
1696 #define DISP_OPEN_LEASE 0x04000000
1697 #define DISP_OPEN_STRIPE 0x08000000
1698 #define DISP_OPEN_DENY 0x10000000
1700 /* INODE LOCK PARTS */
1701 enum mds_ibits_locks {
1702 MDS_INODELOCK_LOOKUP = 0x000001, /* For namespace, dentry etc. Was
1703 * used to protect permission (mode,
1704 * owner, group, etc) before 2.4. */
1705 MDS_INODELOCK_UPDATE = 0x000002, /* size, links, timestamps */
1706 MDS_INODELOCK_OPEN = 0x000004, /* For opened files */
1707 MDS_INODELOCK_LAYOUT = 0x000008, /* for layout */
1709 /* The PERM bit is added in 2.4, and is used to protect permission
1710 * (mode, owner, group, ACL, etc.) separate from LOOKUP lock.
1711 * For remote directories (in DNE) these locks will be granted by
1712 * different MDTs (different LDLM namespace).
1714 * For local directory, the MDT always grants UPDATE|PERM together.
1715 * For remote directory, master MDT (where remote directory is) grants
1716 * UPDATE|PERM, and remote MDT (where name entry is) grants LOOKUP_LOCK.
1718 MDS_INODELOCK_PERM = 0x000010,
1719 MDS_INODELOCK_XATTR = 0x000020, /* non-permission extended attrs */
1720 MDS_INODELOCK_DOM = 0x000040, /* Data for Data-on-MDT files */
1721 /* Do not forget to increase MDS_INODELOCK_NUMBITS when adding bits */
1723 #define MDS_INODELOCK_NUMBITS 7
1724 /* This FULL lock is useful to take on unlink sort of operations */
1725 #define MDS_INODELOCK_FULL ((1 << MDS_INODELOCK_NUMBITS) - 1)
1726 /* DOM lock shouldn't be canceled early, use this macro for ELC */
1727 #define MDS_INODELOCK_ELC (MDS_INODELOCK_FULL & ~MDS_INODELOCK_DOM)
1729 /* NOTE: until Lustre 1.8.7/2.1.1 the fid_ver() was packed into name[2],
1730 * but was moved into name[1] along with the OID to avoid consuming the
1731 * name[2,3] fields that need to be used for the quota id (also a FID). */
1733 LUSTRE_RES_ID_SEQ_OFF = 0,
1734 LUSTRE_RES_ID_VER_OID_OFF = 1,
1735 LUSTRE_RES_ID_WAS_VER_OFF = 2, /* see note above */
1736 LUSTRE_RES_ID_QUOTA_SEQ_OFF = 2,
1737 LUSTRE_RES_ID_QUOTA_VER_OID_OFF = 3,
1738 LUSTRE_RES_ID_HSH_OFF = 3
1741 #define MDS_STATUS_CONN 1
1742 #define MDS_STATUS_LOV 2
1745 /* these should be identical to their EXT4_*_FL counterparts, they are
1746 * redefined here only to avoid dragging in fs/ext4/ext4.h */
1747 LUSTRE_SYNC_FL = 0x00000008, /* Synchronous updates */
1748 LUSTRE_IMMUTABLE_FL = 0x00000010, /* Immutable file */
1749 LUSTRE_APPEND_FL = 0x00000020, /* file writes may only append */
1750 LUSTRE_NODUMP_FL = 0x00000040, /* do not dump file */
1751 LUSTRE_NOATIME_FL = 0x00000080, /* do not update atime */
1752 LUSTRE_INDEX_FL = 0x00001000, /* hash-indexed directory */
1753 LUSTRE_DIRSYNC_FL = 0x00010000, /* dirsync behaviour (dir only) */
1754 LUSTRE_TOPDIR_FL = 0x00020000, /* Top of directory hierarchies*/
1755 LUSTRE_INLINE_DATA_FL = 0x10000000, /* Inode has inline data. */
1756 LUSTRE_PROJINHERIT_FL = 0x20000000, /* Create with parents projid */
1758 /* These flags will not be identical to any EXT4_*_FL counterparts,
1759 * and only reserved for lustre purpose. Note: these flags might
1760 * be conflict with some of EXT4 flags, so
1761 * 1. these conflict flags needs to be removed when the flag is
1762 * wired by la_flags see osd_attr_get().
1763 * 2. If these flags needs to be stored into inode, they will be
1764 * stored in LMA. see LMAI_XXXX */
1765 LUSTRE_ORPHAN_FL = 0x00002000,
1766 LUSTRE_SET_SYNC_FL = 0x00040000, /* Synchronous setattr on OSTs */
1768 LUSTRE_LMA_FL_MASKS = LUSTRE_ORPHAN_FL,
1771 #ifndef FS_XFLAG_SYNC
1772 #define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
1774 #ifndef FS_XFLAG_NOATIME
1775 #define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */
1777 #ifndef FS_XFLAG_IMMUTABLE
1778 #define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
1780 #ifndef FS_XFLAG_APPEND
1781 #define FS_XFLAG_APPEND 0x00000010 /* all writes append */
1783 #ifndef FS_XFLAG_PROJINHERIT
1784 #define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
1788 /* Convert wire LUSTRE_*_FL to corresponding client local VFS S_* values
1789 * for the client inode i_flags. The LUSTRE_*_FL are the Lustre wire
1790 * protocol equivalents of LDISKFS_*_FL values stored on disk, while
1791 * the S_* flags are kernel-internal values that change between kernel
1792 * versions. These flags are set/cleared via FSFILT_IOC_{GET,SET}_FLAGS.
1793 * See b=16526 for a full history. */
1794 static inline int ll_ext_to_inode_flags(int flags)
1796 return (((flags & LUSTRE_SYNC_FL) ? S_SYNC : 0) |
1797 ((flags & LUSTRE_NOATIME_FL) ? S_NOATIME : 0) |
1798 ((flags & LUSTRE_APPEND_FL) ? S_APPEND : 0) |
1799 #if defined(S_DIRSYNC)
1800 ((flags & LUSTRE_DIRSYNC_FL) ? S_DIRSYNC : 0) |
1802 ((flags & LUSTRE_IMMUTABLE_FL) ? S_IMMUTABLE : 0));
1805 static inline int ll_inode_to_ext_flags(int iflags)
1807 return (((iflags & S_SYNC) ? LUSTRE_SYNC_FL : 0) |
1808 ((iflags & S_NOATIME) ? LUSTRE_NOATIME_FL : 0) |
1809 ((iflags & S_APPEND) ? LUSTRE_APPEND_FL : 0) |
1810 #if defined(S_DIRSYNC)
1811 ((iflags & S_DIRSYNC) ? LUSTRE_DIRSYNC_FL : 0) |
1813 ((iflags & S_IMMUTABLE) ? LUSTRE_IMMUTABLE_FL : 0));
1816 static inline int ll_xflags_to_inode_flags(int xflags)
1818 return ((xflags & FS_XFLAG_SYNC) ? S_SYNC : 0) |
1819 ((xflags & FS_XFLAG_NOATIME) ? S_NOATIME : 0) |
1820 ((xflags & FS_XFLAG_APPEND) ? S_APPEND : 0) |
1821 ((xflags & FS_XFLAG_IMMUTABLE) ? S_IMMUTABLE : 0);
1824 static inline int ll_inode_flags_to_xflags(int flags)
1826 return ((flags & S_SYNC) ? FS_XFLAG_SYNC : 0) |
1827 ((flags & S_NOATIME) ? FS_XFLAG_NOATIME : 0) |
1828 ((flags & S_APPEND) ? FS_XFLAG_APPEND : 0) |
1829 ((flags & S_IMMUTABLE) ? FS_XFLAG_IMMUTABLE : 0);
1833 /* 64 possible states */
1834 enum md_transient_state {
1835 MS_RESTORE = (1 << 0), /* restore is running */
1839 struct lu_fid mbo_fid1;
1840 struct lu_fid mbo_fid2;
1841 struct lustre_handle mbo_open_handle;
1843 __u64 mbo_size; /* Offset, in the case of MDS_READPAGE */
1847 __u64 mbo_blocks; /* XID, in the case of MDS_READPAGE */
1848 __u64 mbo_version; /* was mbo_ioepoch before 2.11 */
1849 __u64 mbo_t_state; /* transient file state defined in
1850 * enum md_transient_state
1851 * was "ino" until 2.4.0 */
1854 __u32 mbo_capability;
1858 __u32 mbo_flags; /* LUSTRE_*_FL file attributes */
1860 __u32 mbo_nlink; /* #bytes to read in the case of MDS_READPAGE */
1861 __u32 mbo_layout_gen; /* was "generation" until 2.4.0 */
1863 __u32 mbo_eadatasize;
1865 __u32 mbo_max_mdsize;
1866 __u32 mbo_unused3; /* was max_cookiesize until 2.8 */
1867 __u32 mbo_uid_h; /* high 32-bits of uid, for FUID */
1868 __u32 mbo_gid_h; /* high 32-bits of gid, for FUID */
1870 __u64 mbo_dom_size; /* size of DOM component */
1871 __u64 mbo_dom_blocks; /* blocks consumed by DOM component */
1872 __u64 mbo_padding_8; /* also fix lustre_swab_mdt_body */
1873 __u64 mbo_padding_9;
1874 __u64 mbo_padding_10;
1877 struct mdt_ioepoch {
1878 struct lustre_handle mio_open_handle;
1879 __u64 mio_unused1; /* was ioepoch */
1880 __u32 mio_unused2; /* was flags */
1884 /* permissions for md_perm.mp_perm */
1886 CFS_SETUID_PERM = 0x01,
1887 CFS_SETGID_PERM = 0x02,
1888 CFS_SETGRP_PERM = 0x04,
1891 struct mdt_rec_setattr {
1901 __u32 sa_padding_1_h;
1902 struct lu_fid sa_fid;
1911 __u32 sa_attr_flags;
1913 __u32 sa_bias; /* some operation flags */
1920 * Attribute flags used in mdt_rec_setattr::sa_valid.
1921 * The kernel's #defines for ATTR_* should not be used over the network
1922 * since the client and MDS may run different kernels (see bug 13828)
1923 * Therefore, we should only use MDS_ATTR_* attributes for sa_valid.
1925 #define MDS_ATTR_MODE 0x1ULL /* = 1 */
1926 #define MDS_ATTR_UID 0x2ULL /* = 2 */
1927 #define MDS_ATTR_GID 0x4ULL /* = 4 */
1928 #define MDS_ATTR_SIZE 0x8ULL /* = 8 */
1929 #define MDS_ATTR_ATIME 0x10ULL /* = 16 */
1930 #define MDS_ATTR_MTIME 0x20ULL /* = 32 */
1931 #define MDS_ATTR_CTIME 0x40ULL /* = 64 */
1932 #define MDS_ATTR_ATIME_SET 0x80ULL /* = 128 */
1933 #define MDS_ATTR_MTIME_SET 0x100ULL /* = 256 */
1934 #define MDS_ATTR_FORCE 0x200ULL /* = 512, Not a change, but a change it */
1935 #define MDS_ATTR_ATTR_FLAG 0x400ULL /* = 1024 */
1936 #define MDS_ATTR_KILL_SUID 0x800ULL /* = 2048 */
1937 #define MDS_ATTR_KILL_SGID 0x1000ULL /* = 4096 */
1938 #define MDS_ATTR_CTIME_SET 0x2000ULL /* = 8192 */
1939 #define MDS_ATTR_FROM_OPEN 0x4000ULL /* = 16384, called from open path, ie O_TRUNC */
1940 #define MDS_ATTR_BLOCKS 0x8000ULL /* = 32768 */
1941 #define MDS_ATTR_PROJID 0x10000ULL /* = 65536 */
1942 #define MDS_ATTR_LSIZE 0x20000ULL /* = 131072 */
1943 #define MDS_ATTR_LBLOCKS 0x40000ULL /* = 262144 */
1944 #define MDS_ATTR_OVERRIDE 0x2000000ULL /* = 33554432 */
1947 /* MDS_CHECK_SPLIT = 1 << 0, obsolete before 2.3.58 */
1948 MDS_CROSS_REF = 1 << 1,
1949 /* MDS_VTX_BYPASS = 1 << 2, obsolete since 2.3.54 */
1950 MDS_PERM_BYPASS = 1 << 3,
1951 /* MDS_SOM = 1 << 4, obsolete since 2.8.0 */
1952 MDS_QUOTA_IGNORE = 1 << 5,
1953 /* MDS_CLOSE_CLEANUP = 1 << 6, obsolete since 2.3.51 */
1954 MDS_KEEP_ORPHAN = 1 << 7,
1955 MDS_RECOV_OPEN = 1 << 8,
1956 MDS_DATA_MODIFIED = 1 << 9,
1957 MDS_CREATE_VOLATILE = 1 << 10,
1958 MDS_OWNEROVERRIDE = 1 << 11,
1959 MDS_HSM_RELEASE = 1 << 12,
1960 MDS_CLOSE_MIGRATE = 1 << 13,
1961 MDS_CLOSE_LAYOUT_SWAP = 1 << 14,
1962 MDS_CLOSE_LAYOUT_MERGE = 1 << 15,
1963 MDS_CLOSE_RESYNC_DONE = 1 << 16,
1964 MDS_CLOSE_LAYOUT_SPLIT = 1 << 17,
1965 MDS_TRUNC_KEEP_LEASE = 1 << 18,
1966 MDS_PCC_ATTACH = 1 << 19,
1967 MDS_CLOSE_UPDATE_TIMES = 1 << 20,
1970 #define MDS_CLOSE_INTENT (MDS_HSM_RELEASE | MDS_CLOSE_LAYOUT_SWAP | \
1971 MDS_CLOSE_LAYOUT_MERGE | MDS_CLOSE_LAYOUT_SPLIT | \
1972 MDS_CLOSE_RESYNC_DONE)
1974 /* instance of mdt_reint_rec */
1975 struct mdt_rec_create {
1983 __u32 cr_suppgid1_h;
1985 __u32 cr_suppgid2_h;
1986 struct lu_fid cr_fid1;
1987 struct lu_fid cr_fid2;
1988 struct lustre_handle cr_open_handle_old; /* in case of open replay */
1992 __u32 cr_archive_id;
1995 __u64 cr_padding_1; /* rr_blocks */
1998 /* use of helpers set/get_mrc_cr_flags() is needed to access
1999 * 64 bits cr_flags [cr_flags_l, cr_flags_h], this is done to
2000 * extend cr_flags size without breaking 1.8 compat */
2001 __u32 cr_flags_l; /* for use with open, low 32 bits */
2002 __u32 cr_flags_h; /* for use with open, high 32 bits */
2003 __u32 cr_umask; /* umask for create */
2004 __u32 cr_padding_4; /* rr_padding_4 */
2007 /* instance of mdt_reint_rec */
2008 struct mdt_rec_link {
2016 __u32 lk_suppgid1_h;
2018 __u32 lk_suppgid2_h;
2019 struct lu_fid lk_fid1;
2020 struct lu_fid lk_fid2;
2022 __u64 lk_padding_1; /* rr_atime */
2023 __u64 lk_padding_2; /* rr_ctime */
2024 __u64 lk_padding_3; /* rr_size */
2025 __u64 lk_padding_4; /* rr_blocks */
2027 __u32 lk_padding_5; /* rr_mode */
2028 __u32 lk_padding_6; /* rr_flags */
2029 __u32 lk_padding_7; /* rr_padding_2 */
2030 __u32 lk_padding_8; /* rr_padding_3 */
2031 __u32 lk_padding_9; /* rr_padding_4 */
2034 /* instance of mdt_reint_rec */
2035 struct mdt_rec_unlink {
2043 __u32 ul_suppgid1_h;
2045 __u32 ul_suppgid2_h;
2046 struct lu_fid ul_fid1;
2047 struct lu_fid ul_fid2;
2049 __u64 ul_padding_2; /* rr_atime */
2050 __u64 ul_padding_3; /* rr_ctime */
2051 __u64 ul_padding_4; /* rr_size */
2052 __u64 ul_padding_5; /* rr_blocks */
2055 __u32 ul_padding_6; /* rr_flags */
2056 __u32 ul_padding_7; /* rr_padding_2 */
2057 __u32 ul_padding_8; /* rr_padding_3 */
2058 __u32 ul_padding_9; /* rr_padding_4 */
2061 /* instance of mdt_reint_rec */
2062 struct mdt_rec_rename {
2070 __u32 rn_suppgid1_h;
2072 __u32 rn_suppgid2_h;
2073 struct lu_fid rn_fid1;
2074 struct lu_fid rn_fid2;
2076 __u64 rn_padding_1; /* rr_atime */
2077 __u64 rn_padding_2; /* rr_ctime */
2078 __u64 rn_padding_3; /* rr_size */
2079 __u64 rn_padding_4; /* rr_blocks */
2080 __u32 rn_bias; /* some operation flags */
2081 __u32 rn_mode; /* cross-ref rename has mode */
2082 __u32 rn_padding_5; /* rr_flags */
2083 __u32 rn_padding_6; /* rr_padding_2 */
2084 __u32 rn_padding_7; /* rr_padding_3 */
2085 __u32 rn_padding_8; /* rr_padding_4 */
2088 /* instance of mdt_reint_rec */
2089 struct mdt_rec_setxattr {
2097 __u32 sx_suppgid1_h;
2099 __u32 sx_suppgid2_h;
2100 struct lu_fid sx_fid;
2101 __u64 sx_padding_1; /* These three are rr_fid2 */
2106 __u64 sx_padding_5; /* rr_ctime */
2107 __u64 sx_padding_6; /* rr_size */
2108 __u64 sx_padding_7; /* rr_blocks */
2111 __u32 sx_padding_8; /* rr_flags */
2112 __u32 sx_padding_9; /* rr_padding_2 */
2113 __u32 sx_padding_10; /* rr_padding_3 */
2114 __u32 sx_padding_11; /* rr_padding_4 */
2117 /* instance of mdt_reint_rec
2118 * FLR: for file resync MDS_REINT_RESYNC RPC. */
2119 struct mdt_rec_resync {
2127 __u32 rs_suppgid1_h;
2129 __u32 rs_suppgid2_h;
2130 struct lu_fid rs_fid;
2131 __u8 rs_padding0[sizeof(struct lu_fid)];
2132 struct lustre_handle rs_lease_handle; /* rr_mtime */
2133 __s64 rs_padding1; /* rr_atime */
2134 __s64 rs_padding2; /* rr_ctime */
2135 __u64 rs_padding3; /* rr_size */
2136 __u64 rs_padding4; /* rr_blocks */
2138 __u32 rs_padding5; /* rr_mode */
2139 __u32 rs_padding6; /* rr_flags */
2140 __u32 rs_padding7; /* rr_flags_h */
2141 __u32 rs_padding8; /* rr_umask */
2143 __u16 rs_padding9; /* rr_padding_4 */
2147 * mdt_rec_reint is the template for all mdt_reint_xxx structures.
2148 * Do NOT change the size of various members, otherwise the value
2149 * will be broken in lustre_swab_mdt_rec_reint().
2151 * If you add new members in other mdt_reint_xxx structres and need to use the
2152 * rr_padding_x fields, then update lustre_swab_mdt_rec_reint() also.
2154 struct mdt_rec_reint {
2162 __u32 rr_suppgid1_h;
2164 __u32 rr_suppgid2_h;
2165 struct lu_fid rr_fid1;
2166 struct lu_fid rr_fid2;
2178 __u16 rr_padding_4; /* also fix lustre_swab_mdt_rec_reint */
2181 #define LMV_DESC_QOS_MAXAGE_DEFAULT 60 /* Seconds */
2183 /* lmv structures */
2185 __u32 ld_tgt_count; /* how many MDS's */
2186 __u32 ld_active_tgt_count; /* how many active */
2187 __u32 ld_default_stripe_count; /* how many objects are used */
2188 __u32 ld_pattern; /* default hash pattern */
2189 __u64 ld_default_hash_size;
2190 __u64 ld_padding_1; /* also fix lustre_swab_lmv_desc */
2191 __u32 ld_padding_2; /* also fix lustre_swab_lmv_desc */
2192 __u32 ld_qos_maxage; /* in second */
2193 __u32 ld_padding_3; /* also fix lustre_swab_lmv_desc */
2194 __u32 ld_padding_4; /* also fix lustre_swab_lmv_desc */
2195 struct obd_uuid ld_uuid;
2198 /* LMV layout EA, and it will be stored both in master and slave object */
2199 struct lmv_mds_md_v1 {
2201 __u32 lmv_stripe_count;
2202 __u32 lmv_master_mdt_index; /* On master object, it is master
2203 * MDT index, on slave object, it
2204 * is stripe index of the slave obj */
2205 __u32 lmv_hash_type; /* dir stripe policy, i.e. indicate
2206 * which hash function to be used,
2207 * Note: only lower 16 bits is being
2208 * used for now. Higher 16 bits will
2209 * be used to mark the object status,
2210 * for example migrating or dead. */
2211 __u32 lmv_layout_version; /* increased each time layout changed,
2212 * by directory migration, restripe
2214 __u32 lmv_migrate_offset; /* once this is set, it means this
2215 * directory is been migrated, stripes
2216 * before this offset belong to target,
2217 * from this to source. */
2218 __u32 lmv_migrate_hash; /* hash type of source stripes of
2219 * migrating directory */
2222 char lmv_pool_name[LOV_MAXPOOLNAME + 1]; /* pool name */
2223 struct lu_fid lmv_stripe_fids[0]; /* FIDs for each stripe */
2226 /* foreign LMV EA */
2227 struct lmv_foreign_md {
2228 __u32 lfm_magic; /* magic number = LMV_MAGIC_FOREIGN */
2229 __u32 lfm_length; /* length of lfm_value */
2230 __u32 lfm_type; /* type, see LU_FOREIGN_TYPE_ */
2231 __u32 lfm_flags; /* flags, type specific */
2232 char lfm_value[]; /* free format value */
2235 #define LMV_MAGIC_V1 0x0CD20CD0 /* normal stripe lmv magic */
2236 #define LMV_MAGIC LMV_MAGIC_V1
2238 /* #define LMV_USER_MAGIC 0x0CD30CD0 */
2239 #define LMV_MAGIC_STRIPE 0x0CD40CD0 /* magic for dir sub_stripe */
2240 #define LMV_MAGIC_FOREIGN 0x0CD50CD0 /* magic for lmv foreign */
2243 * The FNV-1a hash algorithm is as follows:
2244 * hash = FNV_offset_basis
2245 * for each octet_of_data to be hashed
2246 * hash = hash XOR octet_of_data
2247 * hash = hash × FNV_prime
2249 * http://en.wikipedia.org/wiki/Fowler–Noll–Vo_hash_function#FNV-1a_hash
2251 * http://www.isthe.com/chongo/tech/comp/fnv/index.html#FNV-reference-source
2252 * FNV_prime is 2^40 + 2^8 + 0xb3 = 0x100000001b3ULL
2254 #define LUSTRE_FNV_1A_64_PRIME 0x100000001b3ULL
2255 #define LUSTRE_FNV_1A_64_OFFSET_BIAS 0xcbf29ce484222325ULL
2256 static inline __u64 lustre_hash_fnv_1a_64(const void *buf, __kernel_size_t size)
2258 __u64 hash = LUSTRE_FNV_1A_64_OFFSET_BIAS;
2259 const unsigned char *p = buf;
2262 for (i = 0; i < size; i++) {
2264 hash *= LUSTRE_FNV_1A_64_PRIME;
2272 struct lmv_mds_md_v1 lmv_md_v1;
2273 struct lmv_user_md lmv_user_md;
2274 struct lmv_foreign_md lmv_foreign_md;
2277 static inline int lmv_mds_md_size(int stripe_count, unsigned int lmm_magic)
2279 switch (lmm_magic) {
2281 struct lmv_mds_md_v1 *lmm1;
2283 return sizeof(*lmm1) + stripe_count *
2284 sizeof(lmm1->lmv_stripe_fids[0]);
2291 static inline int lmv_mds_md_stripe_count_get(const union lmv_mds_md *lmm)
2293 switch (__le32_to_cpu(lmm->lmv_magic)) {
2295 return __le32_to_cpu(lmm->lmv_md_v1.lmv_stripe_count);
2296 case LMV_USER_MAGIC:
2297 return __le32_to_cpu(lmm->lmv_user_md.lum_stripe_count);
2303 static inline int lmv_mds_md_hash_type_get(const union lmv_mds_md *lmm)
2305 switch (__le32_to_cpu(lmm->lmv_magic)) {
2307 return __le32_to_cpu(lmm->lmv_md_v1.lmv_hash_type);
2308 case LMV_USER_MAGIC:
2309 return __le32_to_cpu(lmm->lmv_user_md.lum_hash_type);
2319 FLD_FIRST_OPC = FLD_QUERY
2325 SEQ_FIRST_OPC = SEQ_QUERY
2329 SEQ_ALLOC_SUPER = 0,
2341 LFSCK_NOTIFY = 1101,
2344 LFSCK_FIRST_OPC = LFSCK_NOTIFY
2348 * LOV data structures
2351 #define LOV_MAX_UUID_BUFFER_SIZE 8192
2352 /* The size of the buffer the lov/mdc reserves for the
2353 * array of UUIDs returned by the MDS. With the current
2354 * protocol, this will limit the max number of OSTs per LOV */
2356 #define LOV_DESC_MAGIC 0xB0CCDE5C
2357 #define LOV_DESC_QOS_MAXAGE_DEFAULT 5 /* Seconds */
2358 #define LOV_DESC_STRIPE_SIZE_DEFAULT (1 << LNET_MTU_BITS)
2360 /* LOV settings descriptor (should only contain static info) */
2362 __u32 ld_tgt_count; /* how many OBD's */
2363 __u32 ld_active_tgt_count; /* how many active */
2364 __s32 ld_default_stripe_count; /* how many objects are used */
2365 __u32 ld_pattern; /* default PATTERN_RAID0 */
2366 __u64 ld_default_stripe_size; /* in bytes */
2367 __s64 ld_default_stripe_offset; /* starting OST index */
2368 __u32 ld_padding_0; /* unused */
2369 __u32 ld_qos_maxage; /* in second */
2370 __u32 ld_padding_1; /* also fix lustre_swab_lov_desc */
2371 __u32 ld_padding_2; /* also fix lustre_swab_lov_desc */
2372 struct obd_uuid ld_uuid;
2375 #define ld_magic ld_active_tgt_count /* for swabbing from llogs */
2380 /* opcodes -- MUST be distinct from OST/MDS opcodes */
2385 LDLM_BL_CALLBACK = 104,
2386 LDLM_CP_CALLBACK = 105,
2387 LDLM_GL_CALLBACK = 106,
2388 LDLM_SET_INFO = 107,
2391 #define LDLM_FIRST_OPC LDLM_ENQUEUE
2393 #define RES_NAME_SIZE 4
2394 struct ldlm_res_id {
2395 __u64 name[RES_NAME_SIZE];
2398 #define DLDLMRES "[%#llx:%#llx:%#llx].%#llx"
2399 #define PLDLMRES(res) (unsigned long long)(res)->lr_name.name[0], \
2400 (unsigned long long)(res)->lr_name.name[1], \
2401 (unsigned long long)(res)->lr_name.name[2], \
2402 (unsigned long long)(res)->lr_name.name[3]
2418 #define LCK_MODE_NUM 8
2428 #define LDLM_MIN_TYPE LDLM_PLAIN
2430 struct ldlm_extent {
2436 static inline bool ldlm_extent_equal(const struct ldlm_extent *ex1,
2437 const struct ldlm_extent *ex2)
2439 return ex1->start == ex2->start && ex1->end == ex2->end;
2442 struct ldlm_inodebits {
2445 __u64 try_bits; /* optional bits to try */
2446 __u64 cancel_bits; /* for lock convert */
2450 struct ldlm_flock_wire {
2458 /* it's important that the fields of the ldlm_extent structure match
2459 * the first fields of the ldlm_flock structure because there is only
2460 * one ldlm_swab routine to process the ldlm_policy_data_t union. if
2461 * this ever changes we will need to swab the union differently based
2462 * on the resource type. */
2464 union ldlm_wire_policy_data {
2465 struct ldlm_extent l_extent;
2466 struct ldlm_flock_wire l_flock;
2467 struct ldlm_inodebits l_inodebits;
2470 struct barrier_lvb {
2476 struct ldlm_gl_barrier_desc {
2482 union ldlm_gl_desc {
2483 struct ldlm_gl_lquota_desc lquota_desc;
2484 struct ldlm_gl_barrier_desc barrier_desc;
2487 enum ldlm_intent_flags {
2488 IT_OPEN = 0x00000001,
2489 IT_CREAT = 0x00000002,
2490 IT_OPEN_CREAT = IT_OPEN | IT_CREAT, /* To allow case label. */
2491 IT_READDIR = 0x00000004, /* Used by mdc, not put on the wire. */
2492 IT_GETATTR = 0x00000008,
2493 IT_LOOKUP = 0x00000010,
2494 /* IT_UNLINK = 0x00000020, Obsolete. */
2495 /* IT_TRUNC = 0x00000040, Obsolete. */
2496 IT_GETXATTR = 0x00000080,
2497 /* IT_EXEC = 0x00000100, Obsolete. */
2498 /* IT_PIN = 0x00000200, Obsolete. */
2499 IT_LAYOUT = 0x00000400,
2500 IT_QUOTA_DQACQ = 0x00000800,
2501 IT_QUOTA_CONN = 0x00001000,
2502 /* IT_SETXATTR = 0x00002000, Obsolete. */
2503 IT_GLIMPSE = 0x00004000,
2504 IT_BRW = 0x00008000,
2507 struct ldlm_intent {
2511 struct ldlm_resource_desc {
2512 enum ldlm_type lr_type;
2513 __u32 lr_pad; /* also fix lustre_swab_ldlm_resource_desc */
2514 struct ldlm_res_id lr_name;
2517 struct ldlm_lock_desc {
2518 struct ldlm_resource_desc l_resource;
2519 enum ldlm_mode l_req_mode;
2520 enum ldlm_mode l_granted_mode;
2521 union ldlm_wire_policy_data l_policy_data;
2524 #define LDLM_LOCKREQ_HANDLES 2
2525 #define LDLM_ENQUEUE_CANCEL_OFF 1
2527 struct ldlm_request {
2528 __u32 lock_flags; /* LDLM_FL_*, see lustre_dlm_flags.h */
2529 __u32 lock_count; /* number of locks in lock_handle[] */
2530 struct ldlm_lock_desc lock_desc;/* lock descriptor */
2531 struct lustre_handle lock_handle[LDLM_LOCKREQ_HANDLES];
2536 __u32 lock_padding; /* also fix lustre_swab_ldlm_reply */
2537 struct ldlm_lock_desc lock_desc;
2538 struct lustre_handle lock_handle;
2539 __u64 lock_policy_res1;
2540 __u64 lock_policy_res2;
2543 #define ldlm_flags_to_wire(flags) ((__u32)(flags))
2544 #define ldlm_flags_from_wire(flags) ((__u64)(flags))
2547 * Opcodes for mountconf (mgs and mgc)
2551 MGS_DISCONNECT = 251,
2552 MGS_EXCEPTION = 252, /* node died, etc. */
2553 MGS_TARGET_REG = 253, /* whenever target starts up */
2554 MGS_TARGET_DEL = 254,
2556 MGS_CONFIG_READ = 256,
2558 MGS_FIRST_OPC = MGS_CONNECT
2561 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 13, 53, 0)
2562 #define MGS_PARAM_MAXLEN 1024
2563 #define KEY_SET_INFO "set_info"
2565 struct mgs_send_param {
2566 char mgs_param[MGS_PARAM_MAXLEN];
2570 /* We pass this info to the MGS so it can write config logs */
2571 #define MTI_NAME_MAXLEN 64
2572 #define MTI_PARAM_MAXLEN 4096
2573 #define MTI_NIDS_MAX 32
2574 struct mgs_target_info {
2575 __u32 mti_lustre_ver;
2576 __u32 mti_stripe_index;
2577 __u32 mti_config_ver;
2578 __u32 mti_flags; /* LDD_F_* */
2579 __u32 mti_nid_count;
2580 __u32 mti_instance; /* Running instance of target */
2581 char mti_fsname[MTI_NAME_MAXLEN];
2582 char mti_svname[MTI_NAME_MAXLEN];
2583 char mti_uuid[sizeof(struct obd_uuid)];
2584 __u64 mti_nids[MTI_NIDS_MAX]; /* host nids (lnet_nid_t) */
2585 char mti_params[MTI_PARAM_MAXLEN];
2588 struct mgs_nidtbl_entry {
2589 __u64 mne_version; /* table version of this entry */
2590 __u32 mne_instance; /* target instance # */
2591 __u32 mne_index; /* target index */
2592 __u32 mne_length; /* length of this entry - by bytes */
2593 __u8 mne_type; /* target type LDD_F_SV_TYPE_OST/MDT */
2594 __u8 mne_nid_type; /* type of nid(mbz). for ipv6. */
2595 __u8 mne_nid_size; /* size of each NID, by bytes */
2596 __u8 mne_nid_count; /* # of NIDs in buffer */
2598 lnet_nid_t nids[0]; /* variable size buffer for NIDs. */
2603 CONFIG_T_CONFIG = 0,
2604 CONFIG_T_SPTLRPC = 1,
2605 CONFIG_T_RECOVER = 2,
2606 CONFIG_T_PARAMS = 3,
2607 CONFIG_T_NODEMAP = 4,
2608 CONFIG_T_BARRIER = 5,
2612 struct mgs_config_body {
2613 char mcb_name[MTI_NAME_MAXLEN]; /* logname */
2614 __u64 mcb_offset; /* next index of config log to request */
2615 __u16 mcb_type; /* type of log: CONFIG_T_[CONFIG|RECOVER] */
2616 __u8 mcb_nm_cur_pass;
2617 __u8 mcb_bits; /* bits unit size of config log */
2618 __u32 mcb_units; /* # of units for bulk transfer */
2621 struct mgs_config_res {
2622 __u64 mcr_offset; /* index of last config log */
2624 __u64 mcr_size; /* size of the log */
2625 __u64 mcr_nm_cur_pass; /* current nodemap config pass */
2629 /* Config marker flags (in config log) */
2630 #define CM_START 0x01
2632 #define CM_SKIP 0x04
2633 #define CM_UPGRADE146 0x08
2634 #define CM_EXCLUDE 0x10
2635 #define CM_START_SKIP (CM_START | CM_SKIP)
2638 __u32 cm_step; /* aka config version */
2640 __u32 cm_vers; /* lustre release version number */
2641 __u32 cm_padding; /* 64 bit align */
2642 __s64 cm_createtime; /*when this record was first created */
2643 __s64 cm_canceltime; /*when this record is no longer valid*/
2644 char cm_tgtname[MTI_NAME_MAXLEN];
2645 char cm_comment[MTI_NAME_MAXLEN];
2649 * Opcodes for multiple servers.
2653 /* OBD_LOG_CANCEL = 401, obsolete since 1.5 */
2654 /* OBD_QC_CALLBACK = 402, obsolete since 2.4 */
2657 OBD_FIRST_OPC = OBD_PING
2661 * llog contexts indices.
2663 * There is compatibility problem with indexes below, they are not
2664 * continuous and must keep their numbers for compatibility needs.
2665 * See LU-5218 for details.
2668 LLOG_CONFIG_ORIG_CTXT = 0,
2669 LLOG_CONFIG_REPL_CTXT = 1,
2670 LLOG_MDS_OST_ORIG_CTXT = 2,
2671 LLOG_MDS_OST_REPL_CTXT = 3, /* kept just to avoid re-assignment */
2672 LLOG_SIZE_ORIG_CTXT = 4,
2673 LLOG_SIZE_REPL_CTXT = 5,
2674 LLOG_TEST_ORIG_CTXT = 8,
2675 LLOG_TEST_REPL_CTXT = 9, /* kept just to avoid re-assignment */
2676 LLOG_CHANGELOG_ORIG_CTXT = 12, /**< changelog generation on mdd */
2677 LLOG_CHANGELOG_REPL_CTXT = 13, /**< changelog access on clients */
2678 /* for multiple changelog consumers */
2679 LLOG_CHANGELOG_USER_ORIG_CTXT = 14,
2680 LLOG_AGENT_ORIG_CTXT = 15, /**< agent requests generation on cdt */
2681 LLOG_UPDATELOG_ORIG_CTXT = 16, /* update log */
2682 LLOG_UPDATELOG_REPL_CTXT = 17, /* update log */
2686 /** Identifier for a single log object */
2688 struct ost_id lgl_oi;
2690 } __attribute__((packed));
2692 /** Records written to the CATALOGS list */
2693 #define CATLIST "CATALOGS"
2695 struct llog_logid lci_logid;
2699 } __attribute__((packed));
2701 /* Log data record types - there is no specific reason that these need to
2702 * be related to the RPC opcodes, but no reason not to (may be handy later?)
2704 #define LLOG_OP_MAGIC 0x10600000
2705 #define LLOG_OP_MASK 0xfff00000
2708 LLOG_PAD_MAGIC = LLOG_OP_MAGIC | 0x00000,
2709 OST_SZ_REC = LLOG_OP_MAGIC | 0x00f00,
2710 /* OST_RAID1_REC = LLOG_OP_MAGIC | 0x01000, never used */
2711 MDS_UNLINK_REC = LLOG_OP_MAGIC | 0x10000 | (MDS_REINT << 8) |
2712 REINT_UNLINK, /* obsolete after 2.5.0 */
2713 MDS_UNLINK64_REC = LLOG_OP_MAGIC | 0x90000 | (MDS_REINT << 8) |
2715 /* MDS_SETATTR_REC = LLOG_OP_MAGIC | 0x12401, obsolete 1.8.0 */
2716 MDS_SETATTR64_REC = LLOG_OP_MAGIC | 0x90000 | (MDS_REINT << 8) |
2718 OBD_CFG_REC = LLOG_OP_MAGIC | 0x20000,
2719 /* PTL_CFG_REC = LLOG_OP_MAGIC | 0x30000, obsolete 1.4.0 */
2720 LLOG_GEN_REC = LLOG_OP_MAGIC | 0x40000,
2721 /* LLOG_JOIN_REC = LLOG_OP_MAGIC | 0x50000, obsolete 1.8.0 */
2722 CHANGELOG_REC = LLOG_OP_MAGIC | 0x60000,
2723 CHANGELOG_USER_REC = LLOG_OP_MAGIC | 0x70000,
2724 HSM_AGENT_REC = LLOG_OP_MAGIC | 0x80000,
2725 UPDATE_REC = LLOG_OP_MAGIC | 0xa0000,
2726 LLOG_HDR_MAGIC = LLOG_OP_MAGIC | 0x45539,
2727 LLOG_LOGID_MAGIC = LLOG_OP_MAGIC | 0x4553b,
2730 #define LLOG_REC_HDR_NEEDS_SWABBING(r) \
2731 (((r)->lrh_type & __swab32(LLOG_OP_MASK)) == __swab32(LLOG_OP_MAGIC))
2733 /** Log record header - stored in little endian order.
2734 * Each record must start with this struct, end with a llog_rec_tail,
2735 * and be a multiple of 256 bits in size.
2737 struct llog_rec_hdr {
2742 } __attribute__((packed));
2744 struct llog_rec_tail {
2747 } __attribute__((packed));
2749 /* Where data follow just after header */
2750 #define REC_DATA(ptr) \
2751 ((void *)((char *)ptr + sizeof(struct llog_rec_hdr)))
2753 #define REC_DATA_LEN(rec) \
2754 (rec->lrh_len - sizeof(struct llog_rec_hdr) - \
2755 sizeof(struct llog_rec_tail))
2757 struct llog_logid_rec {
2758 struct llog_rec_hdr lid_hdr;
2759 struct llog_logid lid_id;
2763 struct llog_rec_tail lid_tail;
2764 } __attribute__((packed));
2766 struct llog_unlink_rec {
2767 struct llog_rec_hdr lur_hdr;
2771 struct llog_rec_tail lur_tail;
2772 } __attribute__((packed));
2774 struct llog_unlink64_rec {
2775 struct llog_rec_hdr lur_hdr;
2776 struct lu_fid lur_fid;
2777 __u32 lur_count; /* to destroy the lost precreated */
2781 struct llog_rec_tail lur_tail;
2782 } __attribute__((packed));
2784 struct llog_setattr64_rec {
2785 struct llog_rec_hdr lsr_hdr;
2786 struct ost_id lsr_oi;
2792 struct llog_rec_tail lsr_tail;
2793 } __attribute__((packed));
2795 /* Extended to support project quota */
2796 struct llog_setattr64_rec_v2 {
2797 struct llog_rec_hdr lsr_hdr;
2798 struct ost_id lsr_oi;
2805 __u32 lsr_layout_version;
2808 struct llog_rec_tail lsr_tail;
2809 } __attribute__((packed));
2811 struct llog_size_change_rec {
2812 struct llog_rec_hdr lsc_hdr;
2813 struct ll_fid lsc_fid;
2818 struct llog_rec_tail lsc_tail;
2819 } __attribute__((packed));
2821 #define CHANGELOG_MAGIC 0xca103000
2823 /** \a changelog_rec_type's that can't be masked */
2824 #define CHANGELOG_MINMASK (1 << CL_MARK)
2825 /** bits covering all \a changelog_rec_type's */
2826 #define CHANGELOG_ALLMASK 0XFFFFFFFF
2827 /** default \a changelog_rec_type mask. Allow all of them, except
2828 * CL_ATIME since it can really be time consuming, and not necessary
2830 * Remove also CL_OPEN, CL_GETXATTR and CL_DN_OPEN from default list as it can
2831 * be costly and only necessary for audit purpose.
2833 #define CHANGELOG_DEFMASK (CHANGELOG_ALLMASK & \
2834 ~(1 << CL_ATIME | 1 << CL_OPEN | 1 << CL_GETXATTR | \
2837 /* changelog llog name, needed by client replicators */
2838 #define CHANGELOG_CATALOG "changelog_catalog"
2840 struct changelog_setinfo {
2843 } __attribute__((packed));
2845 /** changelog record */
2846 struct llog_changelog_rec {
2847 struct llog_rec_hdr cr_hdr;
2848 struct changelog_rec cr; /**< Variable length field */
2849 struct llog_rec_tail cr_do_not_use; /**< for_sizeof_only */
2850 } __attribute__((packed));
2852 #define CHANGELOG_USER_PREFIX "cl"
2854 struct llog_changelog_user_rec {
2855 struct llog_rec_hdr cur_hdr;
2857 /* only intended to be used in relative time comparisons to
2858 * detect idle users */
2861 struct llog_rec_tail cur_tail;
2862 } __attribute__((packed));
2864 enum agent_req_status {
2872 static inline const char *agent_req_status2name(enum agent_req_status ars)
2890 struct llog_agent_req_rec {
2891 struct llog_rec_hdr arr_hdr; /**< record header */
2892 __u32 arr_status; /**< status of the request */
2894 * agent_req_status */
2895 __u32 arr_archive_id; /**< backend archive number */
2896 __u64 arr_flags; /**< req flags */
2897 __u64 arr_compound_id; /**< compound cookie, ignored */
2898 __u64 arr_req_create; /**< req. creation time */
2899 __u64 arr_req_change; /**< req. status change time */
2900 struct hsm_action_item arr_hai; /**< req. to the agent */
2901 struct llog_rec_tail arr_tail; /**< record tail for_sizezof_only */
2902 } __attribute__((packed));
2904 /* Old llog gen for compatibility */
2908 } __attribute__((packed));
2910 struct llog_gen_rec {
2911 struct llog_rec_hdr lgr_hdr;
2912 struct llog_gen lgr_gen;
2916 struct llog_rec_tail lgr_tail;
2919 /* flags for the logs */
2921 LLOG_F_ZAP_WHEN_EMPTY = 0x1,
2922 LLOG_F_IS_CAT = 0x2,
2923 LLOG_F_IS_PLAIN = 0x4,
2924 LLOG_F_EXT_JOBID = 0x8,
2925 LLOG_F_IS_FIXSIZE = 0x10,
2926 LLOG_F_EXT_EXTRA_FLAGS = 0x20,
2927 LLOG_F_EXT_X_UIDGID = 0x40,
2928 LLOG_F_EXT_X_NID = 0x80,
2929 LLOG_F_EXT_X_OMODE = 0x100,
2930 LLOG_F_EXT_X_XATTR = 0x200,
2932 /* Note: Flags covered by LLOG_F_EXT_MASK will be inherited from
2933 * catlog to plain log, so do not add LLOG_F_IS_FIXSIZE here,
2934 * because the catlog record is usually fixed size, but its plain
2935 * log record can be variable */
2936 LLOG_F_EXT_MASK = LLOG_F_EXT_JOBID | LLOG_F_EXT_EXTRA_FLAGS |
2937 LLOG_F_EXT_X_UIDGID | LLOG_F_EXT_X_NID |
2938 LLOG_F_EXT_X_OMODE | LLOG_F_EXT_X_XATTR,
2941 /* means first record of catalog */
2943 LLOG_CAT_FIRST = -1,
2946 /* On-disk header structure of each log object, stored in little endian order */
2947 #define LLOG_MIN_CHUNK_SIZE 8192
2948 #define LLOG_HEADER_SIZE (96) /* sizeof (llog_log_hdr) + sizeof(llh_tail)
2949 * - sizeof(llh_bitmap) */
2950 #define LLOG_BITMAP_BYTES (LLOG_MIN_CHUNK_SIZE - LLOG_HEADER_SIZE)
2951 #define LLOG_MIN_REC_SIZE (24) /* round(llog_rec_hdr + llog_rec_tail) */
2953 struct llog_log_hdr {
2954 struct llog_rec_hdr llh_hdr;
2955 __s64 llh_timestamp;
2957 __u32 llh_bitmap_offset;
2960 /* for a catalog the first/oldest and still in-use plain slot is just
2961 * next to it. It will serve as the upper limit after Catalog has
2964 struct obd_uuid llh_tgtuuid;
2965 __u32 llh_reserved[LLOG_HEADER_SIZE/sizeof(__u32)-23];
2966 /* These fields must always be at the end of the llog_log_hdr.
2967 * Note: llh_bitmap size is variable because llog chunk size could be
2968 * bigger than LLOG_MIN_CHUNK_SIZE, i.e. sizeof(llog_log_hdr) > 8192
2969 * bytes, and the real size is stored in llh_hdr.lrh_len, which means
2970 * llh_tail should only be refered by LLOG_HDR_TAIL().
2971 * But this structure is also used by client/server llog interface
2972 * (see llog_client.c), it will be kept in its original way to avoid
2973 * compatiblity issue. */
2974 __u32 llh_bitmap[LLOG_BITMAP_BYTES / sizeof(__u32)];
2975 struct llog_rec_tail llh_tail;
2976 } __attribute__((packed));
2977 #undef LLOG_HEADER_SIZE
2978 #undef LLOG_BITMAP_BYTES
2980 #define LLOG_HDR_BITMAP_SIZE(llh) (__u32)((llh->llh_hdr.lrh_len - \
2981 llh->llh_bitmap_offset - \
2982 sizeof(llh->llh_tail)) * 8)
2983 #define LLOG_HDR_BITMAP(llh) (__u32 *)((char *)(llh) + \
2984 (llh)->llh_bitmap_offset)
2985 #define LLOG_HDR_TAIL(llh) ((struct llog_rec_tail *)((char *)llh + \
2986 llh->llh_hdr.lrh_len - \
2987 sizeof(llh->llh_tail)))
2989 /** log cookies are used to reference a specific log file and a record therein,
2990 and pass record offset from llog_process_thread to llog_write */
2991 struct llog_cookie {
2993 struct llog_logid lgc_lgl;
2999 } __attribute__((packed));
3001 /** llog protocol */
3002 enum llogd_rpc_ops {
3003 LLOG_ORIGIN_HANDLE_CREATE = 501,
3004 LLOG_ORIGIN_HANDLE_NEXT_BLOCK = 502,
3005 LLOG_ORIGIN_HANDLE_READ_HEADER = 503,
3006 /* LLOG_ORIGIN_HANDLE_WRITE_REC = 504, Obsolete by 2.1. */
3007 /* LLOG_ORIGIN_HANDLE_CLOSE = 505, Obsolete by 1.8. */
3008 /* LLOG_ORIGIN_CONNECT = 506, Obsolete by 2.4. */
3009 /* LLOG_CATINFO = 507, Obsolete by 2.3. */
3010 LLOG_ORIGIN_HANDLE_PREV_BLOCK = 508,
3011 LLOG_ORIGIN_HANDLE_DESTROY = 509, /* Obsolete by 2.11. */
3013 LLOG_FIRST_OPC = LLOG_ORIGIN_HANDLE_CREATE
3017 struct llog_logid lgd_logid;
3019 __u32 lgd_llh_flags;
3021 __u32 lgd_saved_index;
3023 __u64 lgd_cur_offset;
3024 } __attribute__((packed));
3026 struct llogd_conn_body {
3027 struct llog_gen lgdc_gen;
3028 struct llog_logid lgdc_logid;
3029 __u32 lgdc_ctxt_idx;
3030 } __attribute__((packed));
3032 /* Note: 64-bit types are 64-bit aligned in structure */
3034 __u64 o_valid; /* hot fields in this obdo */
3037 __u64 o_size; /* o_size-o_blocks == ost_lvb */
3041 __u64 o_blocks; /* brw: cli sent cached bytes */
3044 /* 32-bit fields start here: keep an even number of them via padding */
3045 __u32 o_blksize; /* optimal IO blocksize */
3046 __u32 o_mode; /* brw: cli sent cache remain */
3050 __u32 o_nlink; /* brw: checksum */
3052 __u32 o_misc; /* brw: o_dropped */
3054 __u64 o_ioepoch; /* epoch in ost writes */
3055 __u32 o_stripe_idx; /* holds stripe idx */
3057 struct lustre_handle o_handle; /* brw: lock handle to prolong
3059 /* Originally, the field is llog_cookie for destroy with unlink cookie
3060 * from MDS, it is obsolete in 2.8. Then reuse it by client to transfer
3061 * layout and PFL information in IO, setattr RPCs. Since llog_cookie is
3062 * not used on wire any longer, remove it from the obdo, then it can be
3063 * enlarged freely in the further without affect related RPCs.
3065 * sizeof(ost_layout) + sieof(__u32) == sizeof(llog_cookie). */
3066 struct ost_layout o_layout;
3067 __u32 o_layout_version;
3071 __u64 o_data_version; /* getattr: sum of iversion for
3073 * brw: grant space consumed on
3074 * the client for the write */
3076 __u32 o_padding_4; /* also fix
3077 * lustre_swab_obdo() */
3082 #define o_dirty o_blocks
3083 #define o_undirty o_mode
3084 #define o_dropped o_misc
3085 #define o_cksum o_nlink
3086 #define o_grant_used o_data_version
3087 #define o_falloc_mode o_nlink
3089 struct lfsck_request {
3101 __u16 lr_async_windows;
3103 struct lu_fid lr_fid;
3104 struct lu_fid lr_fid2;
3112 struct lfsck_reply {
3119 LE_LASTID_REBUILDING = 1,
3120 LE_LASTID_REBUILT = 2,
3126 /* LE_FID_ACCESSED = 8, moved to lfsck_events_local */
3128 LE_CONDITIONAL_DESTROY = 10,
3129 LE_PAIRS_VERIFY = 11,
3130 LE_SET_LMV_MASTER = 15,
3131 LE_SET_LMV_SLAVE = 16,
3134 enum lfsck_event_flags {
3135 LEF_TO_OST = 0x00000001,
3136 LEF_FROM_OST = 0x00000002,
3137 LEF_SET_LMV_HASH = 0x00000004,
3138 LEF_SET_LMV_ALL = 0x00000008,
3139 LEF_RECHECK_NAME_HASH = 0x00000010,
3140 LEF_QUERY_ALL = 0x00000020,
3143 /* request structure for OST's */
3148 /* Key for FIEMAP to be used in get_info calls */
3149 struct ll_fiemap_info_key {
3151 struct obdo lfik_oa;
3152 struct fiemap lfik_fiemap;
3155 #define IDX_INFO_MAGIC 0x3D37CC37
3157 /* Index file transfer through the network. The server serializes the index into
3158 * a byte stream which is sent to the client via a bulk transfer */
3162 /* reply: see idx_info_flags below */
3165 /* request & reply: number of lu_idxpage (to be) transferred */
3169 /* request: requested attributes passed down to the iterator API */
3172 /* request & reply: index file identifier (FID) */
3173 struct lu_fid ii_fid;
3175 /* reply: version of the index file before starting to walk the index.
3176 * Please note that the version can be modified at any time during the
3180 /* request: hash to start with:
3181 * reply: hash of the first entry of the first lu_idxpage and hash
3182 * of the entry to read next if any */
3183 __u64 ii_hash_start;
3186 /* reply: size of keys in lu_idxpages, minimal one if II_FL_VARKEY is
3190 /* reply: size of records in lu_idxpages, minimal one if II_FL_VARREC
3199 #define II_END_OFF MDS_DIR_END_OFF /* all entries have been read */
3201 /* List of flags used in idx_info::ii_flags */
3202 enum idx_info_flags {
3203 II_FL_NOHASH = 1 << 0, /* client doesn't care about hash value */
3204 II_FL_VARKEY = 1 << 1, /* keys can be of variable size */
3205 II_FL_VARREC = 1 << 2, /* records can be of variable size */
3206 II_FL_NONUNQ = 1 << 3, /* index supports non-unique keys */
3207 II_FL_NOKEY = 1 << 4, /* client doesn't care about key */
3210 #define LIP_MAGIC 0x8A6D6B6C
3212 /* 4KB (= LU_PAGE_SIZE) container gathering key/record pairs */
3214 /* 16-byte header */
3217 __u16 lip_nr; /* number of entries in the container */
3218 __u64 lip_pad0; /* additional padding for future use */
3220 /* key/record pairs are stored in the remaining 4080 bytes.
3221 * depending upon the flags in idx_info::ii_flags, each key/record
3222 * pair might be preceded by:
3224 * - the key size (II_FL_VARKEY is set)
3225 * - the record size (II_FL_VARREC is set)
3227 * For the time being, we only support fixed-size key & record. */
3228 char lip_entries[0];
3231 #define LIP_HDR_SIZE (offsetof(struct lu_idxpage, lip_entries))
3233 /* Gather all possible type associated with a 4KB container */
3235 struct lu_dirpage lp_dir; /* for MDS_READPAGE */
3236 struct lu_idxpage lp_idx; /* for OBD_IDX_READ */
3237 char lp_array[LU_PAGE_SIZE];
3240 /* security opcodes */
3243 SEC_CTX_INIT_CONT = 802,
3246 SEC_FIRST_OPC = SEC_CTX_INIT
3250 * capa related definitions
3252 #define CAPA_HMAC_MAX_LEN 64
3253 #define CAPA_HMAC_KEY_MAX_LEN 56
3255 /* NB take care when changing the sequence of elements this struct,
3256 * because the offset info is used in find_capa() */
3257 struct lustre_capa {
3258 struct lu_fid lc_fid; /** fid */
3259 __u64 lc_opc; /** operations allowed */
3260 __u64 lc_uid; /** file owner */
3261 __u64 lc_gid; /** file group */
3262 __u32 lc_flags; /** HMAC algorithm & flags */
3263 __u32 lc_keyid; /** key# used for the capability */
3264 __u32 lc_timeout; /** capa timeout value (sec) */
3265 __u32 lc_expiry; /** expiry time (sec) */
3266 __u8 lc_hmac[CAPA_HMAC_MAX_LEN]; /** HMAC */
3267 } __attribute__((packed));
3269 /** lustre_capa::lc_opc */
3271 CAPA_OPC_BODY_WRITE = 1<<0, /**< write object data */
3272 CAPA_OPC_BODY_READ = 1<<1, /**< read object data */
3273 CAPA_OPC_INDEX_LOOKUP = 1<<2, /**< lookup object fid */
3274 CAPA_OPC_INDEX_INSERT = 1<<3, /**< insert object fid */
3275 CAPA_OPC_INDEX_DELETE = 1<<4, /**< delete object fid */
3276 CAPA_OPC_OSS_WRITE = 1<<5, /**< write oss object data */
3277 CAPA_OPC_OSS_READ = 1<<6, /**< read oss object data */
3278 CAPA_OPC_OSS_TRUNC = 1<<7, /**< truncate oss object */
3279 CAPA_OPC_OSS_DESTROY = 1<<8, /**< destroy oss object */
3280 CAPA_OPC_META_WRITE = 1<<9, /**< write object meta data */
3281 CAPA_OPC_META_READ = 1<<10, /**< read object meta data */
3284 #define CAPA_OPC_OSS_RW (CAPA_OPC_OSS_READ | CAPA_OPC_OSS_WRITE)
3285 #define CAPA_OPC_MDS_ONLY \
3286 (CAPA_OPC_BODY_WRITE | CAPA_OPC_BODY_READ | CAPA_OPC_INDEX_LOOKUP | \
3287 CAPA_OPC_INDEX_INSERT | CAPA_OPC_INDEX_DELETE)
3288 #define CAPA_OPC_OSS_ONLY \
3289 (CAPA_OPC_OSS_WRITE | CAPA_OPC_OSS_READ | CAPA_OPC_OSS_TRUNC | \
3290 CAPA_OPC_OSS_DESTROY)
3291 #define CAPA_OPC_MDS_DEFAULT ~CAPA_OPC_OSS_ONLY
3292 #define CAPA_OPC_OSS_DEFAULT ~(CAPA_OPC_MDS_ONLY | CAPA_OPC_OSS_ONLY)
3294 /* lustre_capa::lc_hmac_alg */
3296 CAPA_HMAC_ALG_SHA1 = 1, /**< sha1 algorithm */
3300 #define CAPA_FL_MASK 0x00ffffff
3301 #define CAPA_HMAC_ALG_MASK 0xff000000
3303 struct lustre_capa_key {
3304 __u64 lk_seq; /**< mds# */
3305 __u32 lk_keyid; /**< key# */
3307 __u8 lk_key[CAPA_HMAC_KEY_MAX_LEN]; /**< key */
3308 } __attribute__((packed));
3310 /** The link ea holds 1 \a link_ea_entry for each hardlink */
3311 #define LINK_EA_MAGIC 0x11EAF1DFUL
3312 struct link_ea_header {
3315 __u64 leh_len; /* total size */
3316 __u32 leh_overflow_time;
3320 /** Hardlink data is name and parent fid.
3321 * Stored in this crazy struct for maximum packing and endian-neutrality
3323 struct link_ea_entry {
3324 /** __u16 stored big-endian, unaligned */
3325 unsigned char lee_reclen[2];
3326 unsigned char lee_parent_fid[sizeof(struct lu_fid)];
3328 } __attribute__((packed));
3330 /** fid2path request/reply structure */
3331 struct getinfo_fid2path {
3332 struct lu_fid gf_fid;
3338 struct lu_fid gf_root_fid[0];
3340 } __attribute__((packed));
3342 /** path2parent request/reply structures */
3344 struct lu_fid gp_fid; /**< parent FID */
3345 __u32 gp_linkno; /**< hardlink number */
3346 __u32 gp_name_size; /**< size of the name field */
3347 char gp_name[0]; /**< zero-terminated link name */
3348 } __attribute__((packed));
3350 enum layout_intent_opc {
3351 LAYOUT_INTENT_ACCESS = 0, /** generic access */
3352 LAYOUT_INTENT_READ = 1, /** not used */
3353 LAYOUT_INTENT_WRITE = 2, /** write file, for comp layout */
3354 LAYOUT_INTENT_GLIMPSE = 3, /** not used */
3355 LAYOUT_INTENT_TRUNC = 4, /** truncate file, for comp layout */
3356 LAYOUT_INTENT_RELEASE = 5, /** reserved for HSM release */
3357 LAYOUT_INTENT_RESTORE = 6, /** reserved for HSM restore */
3360 /* enqueue layout lock with intent */
3361 struct layout_intent {
3362 __u32 li_opc; /* intent operation for enqueue, read, write etc */
3364 struct lu_extent li_extent;
3365 } __attribute__((packed));
3368 * On the wire version of hsm_progress structure.
3370 * Contains the userspace hsm_progress and some internal fields.
3372 struct hsm_progress_kernel {
3373 /* Field taken from struct hsm_progress */
3374 struct lu_fid hpk_fid;
3376 struct hsm_extent hpk_extent;
3378 __u16 hpk_errval; /* positive val */
3380 /* Additional fields */
3381 __u64 hpk_data_version;
3383 } __attribute__((packed));
3386 * OUT_UPDATE RPC Format
3388 * During the cross-ref operation, the Master MDT, which the client send the
3389 * request to, will disassembly the operation into object updates, then OSP
3390 * will send these updates to the remote MDT to be executed.
3392 * An UPDATE_OBJ RPC does a list of updates. Each update belongs to an
3393 * operation and does a type of modification to an object.
3401 * update (ub_count-th)
3403 * ub_count must be less than or equal to UPDATE_PER_RPC_MAX.
3408 * rc [+ buffers] (1st)
3409 * rc [+ buffers] (2st)
3411 * rc [+ buffers] (nr_count-th)
3413 * ur_count must be less than or equal to UPDATE_PER_RPC_MAX and should usually
3414 * be equal to ub_count.
3418 * Type of each update, if adding/deleting update, please also update
3419 * update_opcode in lustre/target/out_lib.c.
3431 OUT_INDEX_LOOKUP = 9,
3432 OUT_INDEX_INSERT = 10,
3433 OUT_INDEX_DELETE = 11,
3439 OUT_XATTR_LIST = 17,
3444 UPDATE_FL_OST = 0x00000001, /* op from OST (not MDT) */
3445 UPDATE_FL_SYNC = 0x00000002, /* commit before replying */
3446 UPDATE_FL_COMMITTED = 0x00000004, /* op committed globally */
3447 UPDATE_FL_NOLOG = 0x00000008 /* for idempotent updates */
3450 struct object_update_param {
3451 __u16 oup_len; /* length of this parameter */
3458 struct object_update {
3459 __u16 ou_type; /* enum update_type */
3460 __u16 ou_params_count; /* update parameters count */
3461 __u32 ou_result_size; /* how many bytes can return */
3462 __u32 ou_flags; /* enum update_flag */
3463 __u32 ou_padding1; /* padding 1 */
3464 __u64 ou_batchid; /* op transno on master */
3465 struct lu_fid ou_fid; /* object to be updated */
3466 struct object_update_param ou_params[0]; /* update params */
3469 #define UPDATE_REQUEST_MAGIC_V1 0xBDDE0001
3470 #define UPDATE_REQUEST_MAGIC_V2 0xBDDE0002
3471 #define UPDATE_REQUEST_MAGIC UPDATE_REQUEST_MAGIC_V2
3472 /* Hold object_updates sending to the remote OUT in single RPC */
3473 struct object_update_request {
3475 __u16 ourq_count; /* number of ourq_updates[] */
3477 struct object_update ourq_updates[0];
3480 #define OUT_UPDATE_HEADER_MAGIC 0xBDDF0001
3481 #define OUT_UPDATE_MAX_INLINE_SIZE 4096
3482 /* Header for updates request between MDTs */
3483 struct out_update_header {
3486 __u32 ouh_inline_length;
3487 __u32 ouh_reply_size;
3488 __u32 ouh_inline_data[0];
3491 struct out_update_buffer {
3496 /* the result of object update */
3497 struct object_update_result {
3504 #define UPDATE_REPLY_MAGIC_V1 0x00BD0001
3505 #define UPDATE_REPLY_MAGIC_V2 0x00BD0002
3506 #define UPDATE_REPLY_MAGIC UPDATE_REPLY_MAGIC_V2
3507 /* Hold object_update_results being replied from the remote OUT. */
3508 struct object_update_reply {
3515 /* read update result */
3516 struct out_read_reply {
3523 /** layout swap request structure
3524 * fid1 and fid2 are in mdt_body
3526 struct mdc_swap_layouts {
3528 } __attribute__((packed));
3530 #define INLINE_RESYNC_ARRAY_SIZE 15
3531 struct close_data_resync_done {
3533 __u32 resync_ids_inline[INLINE_RESYNC_ARRAY_SIZE];
3537 struct lustre_handle cd_handle;
3538 struct lu_fid cd_fid;
3539 __u64 cd_data_version;
3541 __u64 cd_reserved[8];
3542 struct close_data_resync_done cd_resync;
3546 __u32 cd_archive_id;
3550 /* Update llog format */
3552 struct lu_fid uop_fid;
3554 __u16 uop_param_count;
3555 __u16 uop_params_off[0];
3556 } __attribute__((packed));
3559 struct update_op uops_op[0];
3562 struct update_params {
3563 struct object_update_param up_params[0];
3566 enum update_records_flag {
3567 UPDATE_RECORD_CONTINUE = 1 >> 0,
3570 * This is the update record format used to store the updates in
3571 * disk. All updates of the operation will be stored in ur_ops.
3572 * All of parameters for updates of the operation will be stored
3574 * To save the space of the record, parameters in ur_ops will only
3575 * remember their offset in ur_params, so to avoid storing duplicate
3576 * parameters in ur_params, which can help us save a lot space for
3577 * operation like creating striped directory.
3579 struct update_records {
3580 __u64 ur_master_transno;
3583 /* If the operation includes multiple updates, then ur_index
3584 * means the index of the update inside the whole updates. */
3586 __u32 ur_update_count;
3587 __u32 ur_param_count;
3588 struct update_ops ur_ops;
3589 /* Note ur_ops has a variable size, so comment out
3590 * the following ur_params, in case some use it directly
3591 * update_records->ur_params
3593 * struct update_params ur_params;
3597 struct llog_update_record {
3598 struct llog_rec_hdr lur_hdr;
3599 struct update_records lur_update_rec;
3600 /* Note ur_update_rec has a variable size, so comment out
3601 * the following ur_tail, in case someone use it directly
3603 * struct llog_rec_tail lur_tail;
3607 /* sepol string format is:
3608 * <1-digit for SELinux status>:<policy name>:<policy version>:<policy hash>
3610 /* Max length of the sepol string
3611 * Should be large enough to contain a sha512sum of the policy
3613 #define SELINUX_MODE_LEN 1
3614 #define SELINUX_POLICY_VER_LEN 3 /* 3 chars to leave room for the future */
3615 #define SELINUX_POLICY_HASH_LEN 64
3616 #define LUSTRE_NODEMAP_SEPOL_LENGTH (SELINUX_MODE_LEN + NAME_MAX + \
3617 SELINUX_POLICY_VER_LEN + \
3618 SELINUX_POLICY_HASH_LEN + 3)
3620 /* nodemap records, uses 32 byte record length */
3621 #define LUSTRE_NODEMAP_NAME_LENGTH 16
3622 struct nodemap_cluster_rec {
3623 char ncr_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
3627 __u32 ncr_squash_uid;
3628 __u32 ncr_squash_gid;
3631 /* lnet_nid_t is 8 bytes */
3632 struct nodemap_range_rec {
3633 lnet_nid_t nrr_start_nid;
3634 lnet_nid_t nrr_end_nid;
3639 struct nodemap_id_rec {
3647 struct nodemap_global_rec {
3658 struct nodemap_cluster_rec ncr;
3659 struct nodemap_range_rec nrr;
3660 struct nodemap_id_rec nir;
3661 struct nodemap_global_rec ngr;
3664 /* This is the lu_ladvise struct which goes out on the wire.
3665 * Corresponds to the userspace arg llapi_lu_ladvise.
3666 * value[1-4] are unspecified fields, used differently by different advices */
3668 __u16 lla_advice; /* advice type */
3669 __u16 lla_value1; /* values for different advice types */
3671 __u64 lla_start; /* first byte of extent for advice */
3672 __u64 lla_end; /* last byte of extent for advice */
3677 /* This is the ladvise_hdr which goes on the wire, corresponds to the userspace
3678 * arg llapi_ladvise_hdr.
3679 * value[1-3] are unspecified fields, used differently by different advices */
3680 struct ladvise_hdr {
3681 __u32 lah_magic; /* LADVISE_MAGIC */
3682 __u32 lah_count; /* number of advices */
3683 __u64 lah_flags; /* from enum ladvise_flag */
3684 __u32 lah_value1; /* unused */
3685 __u32 lah_value2; /* unused */
3686 __u64 lah_value3; /* unused */
3687 struct lu_ladvise lah_advise[0]; /* advices in this header */
3690 #if defined(__cplusplus)