FID_SEQ_IDIF_MAX = 0x1ffffffffULL,
/* Normal FID sequence starts from this value, i.e. 1<<33 */
FID_SEQ_START = 0x200000000ULL,
+ /* sequence for local pre-defined FIDs listed in local_oid */
FID_SEQ_LOCAL_FILE = 0x200000001ULL,
FID_SEQ_DOT_LUSTRE = 0x200000002ULL,
- /* XXX 0x200000003ULL is reserved for FID_SEQ_LLOG_OBJ */
+ /* sequence is used for local named objects FIDs generated
+ * by local_object_storage library */
+ FID_SEQ_LOCAL_NAME = 0x200000003ULL,
FID_SEQ_SPECIAL = 0x200000004ULL,
FID_SEQ_QUOTA = 0x200000005ULL,
FID_SEQ_QUOTA_GLB = 0x200000006ULL,
return ((__u64)ver << 48) | ((seq & 0xffff) << 32) | oid;
}
+/* extract ost index from IDIF FID */
+static inline __u32 fid_idif_ost_idx(const struct lu_fid *fid)
+{
+ LASSERT(fid_is_idif(fid));
+ return (fid_seq(fid) >> 16) & 0xffff;
+}
+
/* unpack an ostid (id/seq) from a wire/disk structure into an IDIF FID */
static inline void ostid_idif_unpack(struct ost_id *ostid,
struct lu_fid *fid, __u32 ost_idx)
#define LU_PAGE_SIZE (1UL << LU_PAGE_SHIFT)
#define LU_PAGE_MASK (~(LU_PAGE_SIZE - 1))
-#define LU_PAGE_COUNT 1 << (CFS_PAGE_SHIFT - LU_PAGE_SHIFT)
+#define LU_PAGE_COUNT (1 << (CFS_PAGE_SHIFT - LU_PAGE_SHIFT))
/** @} lu_dir */
#define OBD_CONNECT_JOBSTATS 0x20000000000ULL /* jobid in ptlrpc_body */
#define OBD_CONNECT_UMASK 0x40000000000ULL /* create uses client umask */
#define OBD_CONNECT_EINPROGRESS 0x80000000000ULL /* client handles -EINPROGRESS
- * write RPC error properly */
+ * RPC error properly */
#define OBD_CONNECT_GRANT_PARAM 0x100000000000ULL/* extra grant params used for
* finer space reservation */
#define OBD_CONNECT_NANOSEC_TIME 0x200000000000ULL /* nanosecond timestamps */
#define OBD_CONNECT_LVB_TYPE 0x400000000000ULL /* variable type of LVB */
+#define OBD_CONNECT_LIGHTWEIGHT 0x1000000000000ULL/* lightweight connection */
/* XXX README XXX:
* Please DO NOT add flag values here before first ensuring that this same
* flag value is not in use on some other branch. Please clear any such
OBD_CONNECT_FID | LRU_RESIZE_CONNECT_FLAG | \
OBD_CONNECT_VBR | OBD_CONNECT_LOV_V3 | \
OBD_CONNECT_SOM | OBD_CONNECT_FULL20 | \
- OBD_CONNECT_64BITHASH | \
- OBD_CONNECT_EINPROGRESS | OBD_CONNECT_JOBSTATS)
+ OBD_CONNECT_64BITHASH | OBD_CONNECT_JOBSTATS | \
+ OBD_CONNECT_EINPROGRESS | \
+ OBD_CONNECT_LIGHTWEIGHT)
#define OST_CONNECT_SUPPORTED (OBD_CONNECT_SRVLOCK | OBD_CONNECT_GRANT | \
OBD_CONNECT_REQPORTAL | OBD_CONNECT_VERSION | \
OBD_CONNECT_TRUNCLOCK | OBD_CONNECT_INDEX | \
OBD_CONNECT_GRANT_SHRINK | OBD_CONNECT_FULL20 | \
OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES | \
OBD_CONNECT_MAX_EASIZE | \
- OBD_CONNECT_EINPROGRESS | OBD_CONNECT_JOBSTATS)
+ OBD_CONNECT_EINPROGRESS | \
+ OBD_CONNECT_JOBSTATS | OBD_CONNECT_LIGHTWEIGHT)
#define ECHO_CONNECT_SUPPORTED (0)
#define MGS_CONNECT_SUPPORTED (OBD_CONNECT_VERSION | OBD_CONNECT_AT | \
OBD_CONNECT_FULL20 | OBD_CONNECT_IMP_RECOV | \
#define LOV_MAGIC_JOIN_V1 0x0BD20BD0
#define LOV_MAGIC_V3 0x0BD30BD0
+/*
+ * magic for fully defined striping
+ * the idea is that we should have different magics for striping "hints"
+ * (struct lov_user_md_v[13]) and defined ready-to-use striping (struct
+ * lov_mds_md_v[13]). at the moment the magics are used in wire protocol,
+ * we can't just change it w/o long way preparation, but we still need a
+ * mechanism to allow LOD to differentiate hint versus ready striping.
+ * so, at the moment we do a trick: MDT knows what to expect from request
+ * depending on the case (replay uses ready striping, non-replay req uses
+ * hints), so MDT replaces magic with appropriate one and now LOD can
+ * easily understand what's inside -bzzz
+ */
+#define LOV_MAGIC_V1_DEF 0x0CD10BD0
+#define LOV_MAGIC_V3_DEF 0x0CD30BD0
+
#define LOV_PATTERN_RAID0 0x001 /* stripes are used round-robin */
#define LOV_PATTERN_RAID1 0x002 /* stripes are mirrors of each other */
#define LOV_PATTERN_FIRST 0x100 /* first stripe is not in round-robin */
#define OBD_BRW_SRVLOCK 0x200 /* Client holds no lock over this page */
#define OBD_BRW_ASYNC 0x400 /* Server may delay commit to disk */
#define OBD_BRW_MEMALLOC 0x800 /* Client runs in the "kswapd" context */
+#define OBD_BRW_OVER_USRQUOTA 0x1000 /* Running out of user quota */
+#define OBD_BRW_OVER_GRPQUOTA 0x2000 /* Running out of group quota */
#define OBD_OBJECT_EOF 0xffffffffffffffffULL
LUSTRE_RES_ID_SEQ_OFF = 0,
LUSTRE_RES_ID_VER_OID_OFF = 1,
LUSTRE_RES_ID_WAS_VER_OFF = 2, /* see note above */
+ LUSTRE_RES_ID_QUOTA_SEQ_OFF = 2,
+ LUSTRE_RES_ID_QUOTA_VER_OID_OFF = 3,
LUSTRE_RES_ID_HSH_OFF = 3
};
extern void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b);
+/* The lquota_id structure is an union of all the possible identifier types that
+ * can be used with quota, this includes:
+ * - 64-bit user ID
+ * - 64-bit group ID
+ * - a FID which can be used for per-directory quota in the future */
+union lquota_id {
+ struct lu_fid qid_fid; /* FID for per-directory quota */
+ __u64 qid_uid; /* user identifier */
+ __u64 qid_gid; /* group identifier */
+};
+
#define Q_QUOTACHECK 0x800100
#define Q_INITQUOTA 0x800101 /* init slave limits */
#define Q_GETOINFO 0x800102 /* get obd quota info */
extern void lustre_swab_obd_quotactl(struct obd_quotactl *q);
+#define QUOTA_DQACQ_FL_ACQ 0x1 /* acquire quota */
+#define QUOTA_DQACQ_FL_PREACQ 0x2 /* pre-acquire */
+#define QUOTA_DQACQ_FL_REL 0x4 /* release quota */
+#define QUOTA_DQACQ_FL_REPORT 0x8 /* report usage */
+
+struct quota_body {
+ struct lu_fid qb_fid; /* FID of global index packing the pool ID
+ * and type (data or metadata) as well as
+ * the quota type (user or group). */
+ union lquota_id qb_id; /* uid or gid or directory FID */
+ __u32 qb_flags; /* see above */
+ __u32 qb_padding;
+ __u64 qb_count; /* acquire/release count (kbytes/inodes) */
+ __u64 qb_usage; /* current slave usage (kbytes/inodes) */
+ __u64 qb_slv_ver; /* slave index file version */
+ struct lustre_handle qb_lockh; /* per-ID lock handle */
+ struct lustre_handle qb_glb_lockh; /* global lock handle */
+ __u64 qb_padding1[4];
+};
+
+/* When the quota_body is used in the reply of quota global intent
+ * lock (IT_QUOTA_CONN) reply, qb_fid contains slave index file FID. */
+#define qb_slv_fid qb_fid
+/* qb_usage is the current qunit (in kbytes/inodes) when quota_body is used in
+ * quota reply */
+#define qb_qunit qb_usage
+
+extern void lustre_swab_quota_body(struct quota_body *b);
+
struct quota_adjust_qunit {
__u32 qaq_flags;
__u32 qaq_id;
};
extern void lustre_swab_quota_adjust_qunit(struct quota_adjust_qunit *q);
+/* Quota types currently supported */
+enum {
+ LQUOTA_TYPE_USR = 0x00, /* maps to USRQUOTA */
+ LQUOTA_TYPE_GRP = 0x01, /* maps to GRPQUOTA */
+ LQUOTA_TYPE_MAX
+};
+
+/* There are 2 different resource types on which a quota limit can be enforced:
+ * - inodes on the MDTs
+ * - blocks on the OSTs */
+enum {
+ LQUOTA_RES_MD = 0x01, /* skip 0 to avoid null oid in FID */
+ LQUOTA_RES_DT = 0x02,
+ LQUOTA_LAST_RES,
+ LQUOTA_FIRST_RES = LQUOTA_RES_MD
+};
+#define LQUOTA_NR_RES (LQUOTA_LAST_RES - LQUOTA_FIRST_RES + 1)
+
+/*
+ * Space accounting support
+ * Format of an accounting record, providing disk usage information for a given
+ * user or group
+ */
+struct lquota_acct_rec { /* 16 bytes */
+ __u64 bspace; /* current space in use */
+ __u64 ispace; /* current # inodes in use */
+};
+
+/*
+ * Global quota index support
+ * Format of a global record, providing global quota settings for a given quota
+ * identifier
+ */
+struct lquota_glb_rec { /* 32 bytes */
+ __u64 qbr_hardlimit; /* quota hard limit, in #inodes or kbytes */
+ __u64 qbr_softlimit; /* quota soft limit, in #inodes or kbytes */
+ __u64 qbr_time; /* grace time, in seconds */
+ __u64 qbr_granted; /* how much is granted to slaves, in #inodes or
+ * kbytes */
+};
+
+/*
+ * Slave index support
+ * Format of a slave record, recording how much space is granted to a given
+ * slave
+ */
+struct lquota_slv_rec { /* 8 bytes */
+ __u64 qsr_granted; /* space granted to the slave for the key=ID,
+ * in #inodes or kbytes */
+};
+
/* flags is shared among quota structures */
#define LQUOTA_FLAGS_GRP 1UL /* 0 is user, 1 is group */
#define LQUOTA_FLAGS_BLK 2UL /* 0 is inode, 1 is block */
MDS_CLOSE_CLEANUP = 1 << 6,
MDS_KEEP_ORPHAN = 1 << 7,
MDS_RECOV_OPEN = 1 << 8,
- MDS_UNLINK_DESTROY = 1 << 9, /* Destory ost object in mdd_unlink */
};
/* instance of mdt_reint_rec */
extern void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d);
+/* Data structures associated with the quota locks */
+
+/* Glimpse descriptor used for the index & per-ID quota locks */
+struct ldlm_gl_lquota_desc {
+ union lquota_id gl_id; /* quota ID subject to the glimpse */
+ __u64 gl_flags; /* see LQUOTA_FL* below */
+ __u64 gl_ver; /* new index version */
+ __u64 gl_hardlimit; /* new hardlimit or qunit value */
+ __u64 gl_softlimit; /* new softlimit */
+ __u64 gl_pad1;
+ __u64 gl_pad2;
+};
+#define gl_qunit gl_hardlimit /* current qunit value used when
+ * glimpsing per-ID quota locks */
+
+/* quota glimpse flags */
+#define LQUOTA_FL_EDQUOT 0x1 /* user/group out of quota space on QMT */
+
+/* LVB used with quota (global and per-ID) locks */
+struct lquota_lvb {
+ __u64 lvb_flags; /* see LQUOTA_FL* above */
+ __u64 lvb_id_may_rel; /* space that might be released later */
+ __u64 lvb_id_rel; /* space released by the slave for this ID */
+ __u64 lvb_id_qunit; /* current qunit value */
+ __u64 lvb_pad1;
+};
+
+/* LVB used with global quota lock */
+#define lvb_glb_ver lvb_id_may_rel /* current version of the global index */
+
/* Similarly to ldlm_wire_policy_data_t, there is one common swabber for all
* LVB types. As a result, any new LVB structure must match the fields of the
* ost_lvb structure. */
union ldlm_wire_lvb {
- struct ost_lvb l_ost;
+ struct ost_lvb l_ost;
+ struct lquota_lvb l_lquota;
};
extern void lustre_swab_lvb(union ldlm_wire_lvb *);
+union ldlm_gl_desc {
+ struct ldlm_gl_lquota_desc lquota_desc;
+};
+
+extern void lustre_swab_gl_desc(union ldlm_gl_desc *);
+
struct ldlm_intent {
__u64 opc;
};
OBD_PING = 400,
OBD_LOG_CANCEL,
OBD_QC_CALLBACK,
+ OBD_IDX_READ,
OBD_LAST_OPC
} obd_cmd_t;
#define OBD_FIRST_OPC OBD_PING
#define LLOG_OP_MASK 0xfff00000
typedef enum {
- LLOG_PAD_MAGIC = LLOG_OP_MAGIC | 0x00000,
- OST_SZ_REC = LLOG_OP_MAGIC | 0x00f00,
- OST_RAID1_REC = LLOG_OP_MAGIC | 0x01000,
- MDS_UNLINK_REC = LLOG_OP_MAGIC | 0x10000 | (MDS_REINT << 8) | REINT_UNLINK,
- MDS_SETATTR_REC = LLOG_OP_MAGIC | 0x10000 | (MDS_REINT << 8) | REINT_SETATTR,
- MDS_SETATTR64_REC = LLOG_OP_MAGIC | 0x90000 | (MDS_REINT << 8) | REINT_SETATTR,
- OBD_CFG_REC = LLOG_OP_MAGIC | 0x20000,
- PTL_CFG_REC = LLOG_OP_MAGIC | 0x30000, /* obsolete */
- LLOG_GEN_REC = LLOG_OP_MAGIC | 0x40000,
- LLOG_JOIN_REC = LLOG_OP_MAGIC | 0x50000, /* obsolete */
- CHANGELOG_REC = LLOG_OP_MAGIC | 0x60000,
- CHANGELOG_USER_REC = LLOG_OP_MAGIC | 0x70000,
- LLOG_HDR_MAGIC = LLOG_OP_MAGIC | 0x45539,
- LLOG_LOGID_MAGIC = LLOG_OP_MAGIC | 0x4553b,
+ LLOG_PAD_MAGIC = LLOG_OP_MAGIC | 0x00000,
+ OST_SZ_REC = LLOG_OP_MAGIC | 0x00f00,
+ /* OST_RAID1_REC = LLOG_OP_MAGIC | 0x01000, never used */
+ MDS_UNLINK_REC = LLOG_OP_MAGIC | 0x10000 | (MDS_REINT << 8) |
+ REINT_UNLINK, /* obsolete after 2.5.0 */
+ MDS_UNLINK64_REC = LLOG_OP_MAGIC | 0x90000 | (MDS_REINT << 8) |
+ REINT_UNLINK,
+ /* MDS_SETATTR_REC = LLOG_OP_MAGIC | 0x12401, obsolete 1.8.0 */
+ MDS_SETATTR64_REC = LLOG_OP_MAGIC | 0x90000 | (MDS_REINT << 8) |
+ REINT_SETATTR,
+ OBD_CFG_REC = LLOG_OP_MAGIC | 0x20000,
+ /* PTL_CFG_REC = LLOG_OP_MAGIC | 0x30000, obsolete 1.4.0 */
+ LLOG_GEN_REC = LLOG_OP_MAGIC | 0x40000,
+ /* LLOG_JOIN_REC = LLOG_OP_MAGIC | 0x50000, obsolete 1.8.0 */
+ CHANGELOG_REC = LLOG_OP_MAGIC | 0x60000,
+ CHANGELOG_USER_REC = LLOG_OP_MAGIC | 0x70000,
+ LLOG_HDR_MAGIC = LLOG_OP_MAGIC | 0x45539,
+ LLOG_LOGID_MAGIC = LLOG_OP_MAGIC | 0x4553b,
} llog_op_type;
-/*
- * for now, continue to support old pad records which have 0 for their
- * type but still need to be swabbed for their length
- */
-#define LLOG_REC_HDR_NEEDS_SWABBING(r) \
- (((r)->lrh_type & __swab32(LLOG_OP_MASK)) == \
- __swab32(LLOG_OP_MAGIC) || \
- (((r)->lrh_type == 0) && ((r)->lrh_len > LLOG_CHUNK_SIZE)))
+#define LLOG_REC_HDR_NEEDS_SWABBING(r) \
+ (((r)->lrh_type & __swab32(LLOG_OP_MASK)) == __swab32(LLOG_OP_MAGIC))
/** Log record header - stored in little endian order.
* Each record must start with this struct, end with a llog_rec_tail,
* and be a multiple of 256 bits in size.
*/
struct llog_rec_hdr {
- __u32 lrh_len;
- __u32 lrh_index;
- __u32 lrh_type;
- __u32 lrh_padding;
+ __u32 lrh_len;
+ __u32 lrh_index;
+ __u32 lrh_type;
+ __u32 lrh_id;
};
struct llog_rec_tail {
- __u32 lrt_len;
- __u32 lrt_index;
+ __u32 lrt_len;
+ __u32 lrt_index;
};
struct llog_logid_rec {
- struct llog_rec_hdr lid_hdr;
- struct llog_logid lid_id;
- __u32 lid_padding1;
- __u32 lid_padding2;
- __u32 lid_padding3;
- __u32 lid_padding4;
- __u32 lid_padding5;
- struct llog_rec_tail lid_tail;
-} __attribute__((packed));
-
-struct llog_create_rec {
- struct llog_rec_hdr lcr_hdr;
- struct ll_fid lcr_fid;
- obd_id lcr_oid;
- obd_count lcr_oseq;
- __u32 lcr_padding;
- struct llog_rec_tail lcr_tail;
-} __attribute__((packed));
-
-struct llog_orphan_rec {
- struct llog_rec_hdr lor_hdr;
- obd_id lor_oid;
- obd_count lor_ogen;
- __u32 lor_padding;
- struct llog_rec_tail lor_tail;
+ struct llog_rec_hdr lid_hdr;
+ struct llog_logid lid_id;
+ __u32 lid_padding1;
+ __u64 lid_padding2;
+ __u64 lid_padding3;
+ struct llog_rec_tail lid_tail;
} __attribute__((packed));
struct llog_unlink_rec {
- struct llog_rec_hdr lur_hdr;
- obd_id lur_oid;
- obd_count lur_oseq;
- obd_count lur_count;
- struct llog_rec_tail lur_tail;
+ struct llog_rec_hdr lur_hdr;
+ obd_id lur_oid;
+ obd_count lur_oseq;
+ obd_count lur_count;
+ struct llog_rec_tail lur_tail;
} __attribute__((packed));
-struct llog_setattr_rec {
- struct llog_rec_hdr lsr_hdr;
- obd_id lsr_oid;
- obd_count lsr_oseq;
- __u32 lsr_uid;
- __u32 lsr_gid;
- __u32 lsr_padding;
- struct llog_rec_tail lsr_tail;
+struct llog_unlink64_rec {
+ struct llog_rec_hdr lur_hdr;
+ struct lu_fid lur_fid;
+ obd_count lur_count; /* to destroy the lost precreated */
+ __u32 lur_padding1;
+ __u64 lur_padding2;
+ __u64 lur_padding3;
+ struct llog_rec_tail lur_tail;
} __attribute__((packed));
struct llog_setattr64_rec {
- struct llog_rec_hdr lsr_hdr;
- obd_id lsr_oid;
- obd_count lsr_oseq;
- __u32 lsr_padding;
- __u32 lsr_uid;
- __u32 lsr_uid_h;
- __u32 lsr_gid;
- __u32 lsr_gid_h;
- struct llog_rec_tail lsr_tail;
+ struct llog_rec_hdr lsr_hdr;
+ obd_id lsr_oid;
+ obd_seq lsr_oseq;
+ __u32 lsr_uid;
+ __u32 lsr_uid_h;
+ __u32 lsr_gid;
+ __u32 lsr_gid_h;
+ __u64 lsr_padding;
+ struct llog_rec_tail lsr_tail;
} __attribute__((packed));
struct llog_size_change_rec {
- struct llog_rec_hdr lsc_hdr;
- struct ll_fid lsc_fid;
- __u32 lsc_ioepoch;
- __u32 lsc_padding;
- struct llog_rec_tail lsc_tail;
+ struct llog_rec_hdr lsc_hdr;
+ struct ll_fid lsc_fid;
+ __u32 lsc_ioepoch;
+ __u32 lsc_padding1;
+ __u64 lsc_padding2;
+ __u64 lsc_padding3;
+ struct llog_rec_tail lsc_tail;
} __attribute__((packed));
#define CHANGELOG_MAGIC 0xca103000
struct llog_rec_tail cur_tail;
} __attribute__((packed));
+/* Old llog gen for compatibility */
struct llog_gen {
- __u64 mnt_cnt;
- __u64 conn_cnt;
+ __u64 mnt_cnt;
+ __u64 conn_cnt;
} __attribute__((packed));
struct llog_gen_rec {
- struct llog_rec_hdr lgr_hdr;
- struct llog_gen lgr_gen;
- struct llog_rec_tail lgr_tail;
+ struct llog_rec_hdr lgr_hdr;
+ struct llog_gen lgr_gen;
+ __u64 padding1;
+ __u64 padding2;
+ __u64 padding3;
+ struct llog_rec_tail lgr_tail;
};
+
/* On-disk header structure of each log object, stored in little endian order */
#define LLOG_CHUNK_SIZE 8192
#define LLOG_HEADER_SIZE (96)
#define LLOG_MIN_REC_SIZE (24) /* round(llog_rec_hdr + llog_rec_tail) */
/* flags for the logs */
-#define LLOG_F_ZAP_WHEN_EMPTY 0x1
-#define LLOG_F_IS_CAT 0x2
-#define LLOG_F_IS_PLAIN 0x4
+enum llog_flag {
+ LLOG_F_ZAP_WHEN_EMPTY = 0x1,
+ LLOG_F_IS_CAT = 0x2,
+ LLOG_F_IS_PLAIN = 0x4,
+};
struct llog_log_hdr {
struct llog_rec_hdr llh_hdr;
struct llog_rec_tail llh_tail;
} __attribute__((packed));
-#define LLOG_BITMAP_SIZE(llh) ((llh->llh_hdr.lrh_len - \
- llh->llh_bitmap_offset - \
- sizeof(llh->llh_tail)) * 8)
+#define LLOG_BITMAP_SIZE(llh) (__u32)((llh->llh_hdr.lrh_len - \
+ llh->llh_bitmap_offset - \
+ sizeof(llh->llh_tail)) * 8)
/** log cookies are used to reference a specific log file and a record therein */
struct llog_cookie {
extern void lustre_swab_llogd_body (struct llogd_body *d);
extern void lustre_swab_llog_hdr (struct llog_log_hdr *h);
extern void lustre_swab_llogd_conn_body (struct llogd_conn_body *d);
-extern void lustre_swab_llog_rec(struct llog_rec_hdr *rec,
- struct llog_rec_tail *tail);
+extern void lustre_swab_llog_rec(struct llog_rec_hdr *rec);
struct lustre_cfg;
extern void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg);
void dump_ost_body(struct ost_body *ob);
void dump_rcs(__u32 *rc);
+#define IDX_INFO_MAGIC 0x3D37CC37
+
+/* Index file transfer through the network. The server serializes the index into
+ * a byte stream which is sent to the client via a bulk transfer */
+struct idx_info {
+ __u32 ii_magic;
+
+ /* reply: see idx_info_flags below */
+ __u32 ii_flags;
+
+ /* request & reply: number of lu_idxpage (to be) transferred */
+ __u16 ii_count;
+ __u16 ii_pad0;
+
+ /* request: requested attributes passed down to the iterator API */
+ __u32 ii_attrs;
+
+ /* request & reply: index file identifier (FID) */
+ struct lu_fid ii_fid;
+
+ /* reply: version of the index file before starting to walk the index.
+ * Please note that the version can be modified at any time during the
+ * transfer */
+ __u64 ii_version;
+
+ /* request: hash to start with:
+ * reply: hash of the first entry of the first lu_idxpage and hash
+ * of the entry to read next if any */
+ __u64 ii_hash_start;
+ __u64 ii_hash_end;
+
+ /* reply: size of keys in lu_idxpages, minimal one if II_FL_VARKEY is
+ * set */
+ __u16 ii_keysize;
+
+ /* reply: size of records in lu_idxpages, minimal one if II_FL_VARREC
+ * is set */
+ __u16 ii_recsize;
+
+ __u32 ii_pad1;
+ __u64 ii_pad2;
+ __u64 ii_pad3;
+};
+extern void lustre_swab_idx_info(struct idx_info *ii);
+
+#define II_END_OFF MDS_DIR_END_OFF /* all entries have been read */
+
+/* List of flags used in idx_info::ii_flags */
+enum idx_info_flags {
+ II_FL_NOHASH = 1 << 0, /* client doesn't care about hash value */
+ II_FL_VARKEY = 1 << 1, /* keys can be of variable size */
+ II_FL_VARREC = 1 << 2, /* records can be of variable size */
+ II_FL_NONUNQ = 1 << 3, /* index supports non-unique keys */
+};
+
+#define LIP_MAGIC 0x8A6D6B6C
+
+/* 4KB (= LU_PAGE_SIZE) container gathering key/record pairs */
+struct lu_idxpage {
+ /* 16-byte header */
+ __u32 lip_magic;
+ __u16 lip_flags;
+ __u16 lip_nr; /* number of entries in the container */
+ __u64 lip_pad0; /* additional padding for future use */
+
+ /* key/record pairs are stored in the remaining 4080 bytes.
+ * depending upon the flags in idx_info::ii_flags, each key/record
+ * pair might be preceded by:
+ * - a hash value
+ * - the key size (II_FL_VARKEY is set)
+ * - the record size (II_FL_VARREC is set)
+ *
+ * For the time being, we only support fixed-size key & record. */
+ char lip_entries[0];
+};
+
+#define LIP_HDR_SIZE (offsetof(struct lu_idxpage, lip_entries))
+
+/* Gather all possible type associated with a 4KB container */
+union lu_page {
+ struct lu_dirpage lp_dir; /* for MDS_READPAGE */
+ struct lu_idxpage lp_idx; /* for OBD_IDX_READ */
+ char lp_array[LU_PAGE_SIZE];
+};
+
/* this will be used when OBD_CONNECT_CHANGE_QS is set */
struct qunit_data {
/**
git://git.whamcloud.com / fs / lustre-release.git / blobdiff