* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Yury Umanets <umka@clusterfs.com>
*/
-#ifndef __LINUX_FID_H
-#define __LINUX_FID_H
+#ifndef __LUSTRE_FID_H
+#define __LUSTRE_FID_H
/** \defgroup fid fid
*
#include <libcfs/libcfs.h>
#include <lustre/lustre_idl.h>
-#include <lustre_req_layout.h>
-#include <lustre_mdt.h>
-
+struct lu_env;
struct lu_site;
struct lu_context;
+struct obd_device;
+struct obd_export;
/* Whole sequences space range and zero range definitions */
extern const struct lu_seq_range LUSTRE_SEQ_SPACE_RANGE;
extern const struct lu_fid LU_DOT_LUSTRE_FID;
enum {
- /*
- * This is how may FIDs may be allocated in one sequence(128k)
- */
- LUSTRE_SEQ_MAX_WIDTH = 0x0000000000020000ULL,
-
- /*
- * How many sequences to allocate to a client at once.
- */
- LUSTRE_SEQ_META_WIDTH = 0x0000000000000001ULL,
-
- /*
- * seq allocation pool size.
- */
- LUSTRE_SEQ_BATCH_WIDTH = LUSTRE_SEQ_META_WIDTH * 1000,
-
- /*
- * This is how many sequences may be in one super-sequence allocated to
- * MDTs.
- */
- LUSTRE_SEQ_SUPER_WIDTH = ((1ULL << 30ULL) * LUSTRE_SEQ_META_WIDTH)
+ /*
+ * This is how may metadata FIDs may be allocated in one sequence(128k)
+ */
+ LUSTRE_METADATA_SEQ_MAX_WIDTH = 0x0000000000020000ULL,
+
+ /*
+ * This is how many data FIDs could be allocated in one sequence(4B - 1)
+ */
+ LUSTRE_DATA_SEQ_MAX_WIDTH = 0x00000000FFFFFFFFULL,
+
+ /*
+ * How many sequences to allocate to a client at once.
+ */
+ LUSTRE_SEQ_META_WIDTH = 0x0000000000000001ULL,
+
+ /*
+ * seq allocation pool size.
+ */
+ LUSTRE_SEQ_BATCH_WIDTH = LUSTRE_SEQ_META_WIDTH * 1000,
+
+ /*
+ * This is how many sequences may be in one super-sequence allocated to
+ * MDTs.
+ */
+ LUSTRE_SEQ_SUPER_WIDTH = ((1ULL << 30ULL) * LUSTRE_SEQ_META_WIDTH)
};
enum {
/** special OID for local objects */
enum local_oid {
- /** \see fld_mod_init */
- FLD_INDEX_OID = 3UL,
- /** \see fid_mod_init */
- FID_SEQ_CTL_OID = 4UL,
- FID_SEQ_SRV_OID = 5UL,
- /** \see mdd_mod_init */
- MDD_ROOT_INDEX_OID = 6UL,
- MDD_ORPHAN_OID = 7UL,
- MDD_LOV_OBJ_OID = 8UL,
- MDD_CAPA_KEYS_OID = 9UL,
- /** \see mdt_mod_init */
- MDT_LAST_RECV_OID = 11UL,
- OSD_FS_ROOT_OID = 13UL,
- ACCT_USER_OID = 15UL,
- ACCT_GROUP_OID = 16UL,
+ /** \see fld_mod_init */
+ FLD_INDEX_OID = 3UL,
+ /** \see fid_mod_init */
+ FID_SEQ_CTL_OID = 4UL,
+ FID_SEQ_SRV_OID = 5UL,
+ /** \see mdd_mod_init */
+ MDD_ROOT_INDEX_OID = 6UL, /* deprecated in 2.4 */
+ MDD_ORPHAN_OID = 7UL, /* deprecated in 2.4 */
+ MDD_LOV_OBJ_OID = 8UL,
+ MDD_CAPA_KEYS_OID = 9UL,
+ /** \see mdt_mod_init */
+ LAST_RECV_OID = 11UL,
+ OSD_FS_ROOT_OID = 13UL,
+ ACCT_USER_OID = 15UL,
+ ACCT_GROUP_OID = 16UL,
LFSCK_BOOKMARK_OID = 17UL,
OTABLE_IT_OID = 18UL,
- OFD_LAST_RECV_OID = 19UL,
- OFD_GROUP0_LAST_OID = 20UL,
- OFD_GROUP4K_LAST_OID = 20UL+4096,
- OFD_LAST_GROUP_OID = 4117UL,
- LLOG_CATALOGS_OID = 4118UL,
- MGS_CONFIGS_OID = 4119UL,
- OFD_HEALTH_CHECK_OID = 4120UL,
+ /* These two definitions are obsolete
+ * OFD_GROUP0_LAST_OID = 20UL,
+ * OFD_GROUP4K_LAST_OID = 20UL+4096,
+ */
+ OFD_LAST_GROUP_OID = 4117UL,
+ LLOG_CATALOGS_OID = 4118UL,
+ MGS_CONFIGS_OID = 4119UL,
+ OFD_HEALTH_CHECK_OID = 4120UL,
MDD_LOV_OBJ_OSEQ = 4121UL,
+ LFSCK_NAMESPACE_OID = 4122UL,
+ REMOTE_PARENT_DIR_OID = 4123UL,
};
static inline void lu_local_obj_fid(struct lu_fid *fid, __u32 oid)
fid->f_ver = 0;
}
+/* For new FS (>= 2.4), the root FID will be changed to
+ * [FID_SEQ_ROOT:1:0], for existing FS, (upgraded to 2.4),
+ * the root FID will still be IGIF */
+static inline int fid_is_root(const struct lu_fid *fid)
+{
+ return unlikely((fid_seq(fid) == FID_SEQ_ROOT &&
+ fid_oid(fid) == 1));
+}
+
+static inline int fid_is_dot_lustre(const struct lu_fid *fid)
+{
+ return unlikely(fid_seq(fid) == FID_SEQ_DOT_LUSTRE &&
+ fid_oid(fid) == FID_OID_DOT_LUSTRE);
+}
+
+static inline int fid_is_obf(const struct lu_fid *fid)
+{
+ return unlikely(fid_seq(fid) == FID_SEQ_DOT_LUSTRE &&
+ fid_oid(fid) == FID_OID_DOT_LUSTRE_OBF);
+}
+
static inline int fid_is_otable_it(const struct lu_fid *fid)
{
return unlikely(fid_seq(fid) == FID_SEQ_LOCAL_FILE &&
fid_seq(fid) == FID_SEQ_QUOTA_GLB;
}
+static inline int fid_is_namespace_visible(const struct lu_fid *fid)
+{
+ const __u64 seq = fid_seq(fid);
+
+ /* Here, we cannot distinguish whether the normal FID is for OST
+ * object or not. It is caller's duty to check more if needed. */
+ return (!fid_is_last_id(fid) &&
+ (fid_seq_is_norm(seq) || fid_seq_is_igif(seq))) ||
+ fid_is_root(fid) || fid_is_dot_lustre(fid);
+}
+
+static inline int fid_seq_in_fldb(__u64 seq)
+{
+ return fid_seq_is_igif(seq) || fid_seq_is_norm(seq) ||
+ fid_seq_is_root(seq) || fid_seq_is_dot(seq);
+}
+
+static inline void lu_last_id_fid(struct lu_fid *fid, __u64 seq)
+{
+ if (fid_seq_is_mdt0(seq)) {
+ fid->f_seq = fid_idif_seq(0, 0);
+ } else {
+ LASSERTF(fid_seq_is_norm(seq) || fid_seq_is_echo(seq) ||
+ fid_seq_is_idif(seq), LPX64"\n", seq);
+ fid->f_seq = seq;
+ }
+ fid->f_oid = 0;
+ fid->f_ver = 0;
+}
+
+/* seq client type */
+enum lu_cli_type {
+ LUSTRE_SEQ_METADATA = 1,
+ LUSTRE_SEQ_DATA
+};
+
enum lu_mgr_type {
LUSTRE_SEQ_SERVER,
LUSTRE_SEQ_CONTROLLER
};
-enum lu_cli_type {
- LUSTRE_SEQ_METADATA,
- LUSTRE_SEQ_DATA
-};
-
struct lu_server_seq;
/* Client sequence manager interface. */
/* sync is needed for update operation */
__u32 lss_need_sync;
- /**
- * Pointer to site object, required to access site fld.
- */
- struct md_site *lss_site;
-};
-int seq_query(struct com_thread_info *info);
+ /**
+ * Pointer to site object, required to access site fld.
+ */
+ struct seq_server_site *lss_site;
+};
/* Server methods */
+
int seq_server_init(struct lu_server_seq *seq,
- struct dt_device *dev,
- const char *prefix,
- enum lu_mgr_type type,
- struct md_site *ls,
- const struct lu_env *env);
+ struct dt_device *dev,
+ const char *prefix,
+ enum lu_mgr_type type,
+ struct seq_server_site *ss,
+ const struct lu_env *env);
void seq_server_fini(struct lu_server_seq *seq,
const struct lu_env *env);
struct lu_fid *fid);
int seq_client_get_seq(const struct lu_env *env, struct lu_client_seq *seq,
seqno_t *seqnr);
-
+int seq_site_fini(const struct lu_env *env, struct seq_server_site *ss);
/* Fids common stuff */
int fid_is_local(const struct lu_env *env,
struct lu_site *site, const struct lu_fid *fid);
+enum lu_cli_type;
+int client_fid_init(struct obd_device *obd, struct obd_export *exp,
+ enum lu_cli_type type);
+int client_fid_fini(struct obd_device *obd);
+
/* fid locking */
struct ldlm_namespace;
* renaming name[2,3] fields that need to be used for the quota identifier.
*/
static inline struct ldlm_res_id *
-fid_build_reg_res_name(const struct lu_fid *f,
- struct ldlm_res_id *name)
+fid_build_reg_res_name(const struct lu_fid *fid, struct ldlm_res_id *res)
+{
+ memset(res, 0, sizeof(*res));
+ res->name[LUSTRE_RES_ID_SEQ_OFF] = fid_seq(fid);
+ res->name[LUSTRE_RES_ID_VER_OID_OFF] = fid_ver_oid(fid);
+
+ return res;
+}
+
+/*
+ * Return true if resource is for object identified by FID.
+ */
+static inline int fid_res_name_eq(const struct lu_fid *fid,
+ const struct ldlm_res_id *res)
+{
+ return res->name[LUSTRE_RES_ID_SEQ_OFF] == fid_seq(fid) &&
+ res->name[LUSTRE_RES_ID_VER_OID_OFF] == fid_ver_oid(fid);
+}
+
+/*
+ * Extract FID from LDLM resource. Reverse of fid_build_reg_res_name().
+ */
+static inline struct lu_fid *
+fid_extract_from_res_name(struct lu_fid *fid, const struct ldlm_res_id *res)
{
- memset(name, 0, sizeof *name);
- name->name[LUSTRE_RES_ID_SEQ_OFF] = fid_seq(f);
- name->name[LUSTRE_RES_ID_VER_OID_OFF] = fid_ver_oid(f);
- return name;
+ fid->f_seq = res->name[LUSTRE_RES_ID_SEQ_OFF];
+ fid->f_oid = (__u32)(res->name[LUSTRE_RES_ID_VER_OID_OFF]);
+ fid->f_ver = (__u32)(res->name[LUSTRE_RES_ID_VER_OID_OFF] >> 32);
+ LASSERT(fid_res_name_eq(fid, res));
+
+ return fid;
}
/*
* Build (DLM) resource identifier from global quota FID and quota ID.
*/
static inline struct ldlm_res_id *
-fid_build_quota_resid(const struct lu_fid *glb_fid, union lquota_id *qid,
+fid_build_quota_res_name(const struct lu_fid *glb_fid, union lquota_id *qid,
struct ldlm_res_id *res)
{
fid_build_reg_res_name(glb_fid, res);
res->name[LUSTRE_RES_ID_QUOTA_SEQ_OFF] = fid_seq(&qid->qid_fid);
res->name[LUSTRE_RES_ID_QUOTA_VER_OID_OFF] = fid_ver_oid(&qid->qid_fid);
+
return res;
}
/*
* Extract global FID and quota ID from resource name
*/
-static inline void fid_extract_quota_resid(struct ldlm_res_id *res,
- struct lu_fid *glb_fid,
- union lquota_id *qid)
+static inline void fid_extract_from_quota_res(struct lu_fid *glb_fid,
+ union lquota_id *qid,
+ const struct ldlm_res_id *res)
{
- glb_fid->f_seq = res->name[LUSTRE_RES_ID_SEQ_OFF];
- glb_fid->f_oid = (__u32)res->name[LUSTRE_RES_ID_VER_OID_OFF];
- glb_fid->f_ver = (__u32)(res->name[LUSTRE_RES_ID_VER_OID_OFF] >> 32);
-
+ fid_extract_from_res_name(glb_fid, res);
qid->qid_fid.f_seq = res->name[LUSTRE_RES_ID_QUOTA_SEQ_OFF];
qid->qid_fid.f_oid = (__u32)res->name[LUSTRE_RES_ID_QUOTA_VER_OID_OFF];
qid->qid_fid.f_ver =
(__u32)(res->name[LUSTRE_RES_ID_QUOTA_VER_OID_OFF] >> 32);
}
-/*
- * Return true if resource is for object identified by fid.
+static inline struct ldlm_res_id *
+fid_build_pdo_res_name(const struct lu_fid *fid, unsigned int hash,
+ struct ldlm_res_id *res)
+{
+ fid_build_reg_res_name(fid, res);
+ res->name[LUSTRE_RES_ID_HSH_OFF] = hash;
+
+ return res;
+}
+
+/**
+ * Build DLM resource name from object id & seq, which will be removed
+ * finally, when we replace ost_id with FID in data stack.
+ *
+ * Currently, resid from the old client, whose res[0] = object_id,
+ * res[1] = object_seq, is just oposite with Metatdata
+ * resid, where, res[0] = fid->f_seq, res[1] = fid->f_oid.
+ * To unifiy the resid identification, we will reverse the data
+ * resid to keep it same with Metadata resid, i.e.
+ *
+ * For resid from the old client,
+ * res[0] = objid, res[1] = 0, still keep the original order,
+ * for compatiblity.
+ *
+ * For new resid
+ * res will be built from normal FID directly, i.e. res[0] = f_seq,
+ * res[1] = f_oid + f_ver.
*/
-static inline int fid_res_name_eq(const struct lu_fid *f,
- const struct ldlm_res_id *name)
+static inline void ostid_build_res_name(struct ost_id *oi,
+ struct ldlm_res_id *name)
{
- return name->name[LUSTRE_RES_ID_SEQ_OFF] == fid_seq(f) &&
- name->name[LUSTRE_RES_ID_VER_OID_OFF] == fid_ver_oid(f);
+ memset(name, 0, sizeof *name);
+ if (fid_seq_is_mdt0(ostid_seq(oi))) {
+ name->name[LUSTRE_RES_ID_SEQ_OFF] = ostid_id(oi);
+ name->name[LUSTRE_RES_ID_VER_OID_OFF] = ostid_seq(oi);
+ } else {
+ fid_build_reg_res_name(&oi->oi_fid, name);
+ }
}
+static inline void ostid_res_name_to_id(struct ost_id *oi,
+ struct ldlm_res_id *name)
+{
+ if (fid_seq_is_mdt0(name->name[LUSTRE_RES_ID_SEQ_OFF])) {
+ /* old resid */
+ ostid_set_seq(oi, name->name[LUSTRE_RES_ID_VER_OID_OFF]);
+ ostid_set_id(oi, name->name[LUSTRE_RES_ID_SEQ_OFF]);
+ } else {
+ /* new resid */
+ fid_extract_from_res_name(&oi->oi_fid, name);
+ }
+}
-static inline struct ldlm_res_id *
-fid_build_pdo_res_name(const struct lu_fid *f,
- unsigned int hash,
- struct ldlm_res_id *name)
+/**
+ * Return true if the resource is for the object identified by this id & group.
+ */
+static inline int ostid_res_name_eq(struct ost_id *oi,
+ struct ldlm_res_id *name)
{
- fid_build_reg_res_name(f, name);
- name->name[LUSTRE_RES_ID_HSH_OFF] = hash;
- return name;
+ /* Note: it is just a trick here to save some effort, probably the
+ * correct way would be turn them into the FID and compare */
+ if (fid_seq_is_mdt0(ostid_seq(oi))) {
+ return name->name[LUSTRE_RES_ID_SEQ_OFF] == ostid_id(oi) &&
+ name->name[LUSTRE_RES_ID_VER_OID_OFF] == ostid_seq(oi);
+ } else {
+ return name->name[LUSTRE_RES_ID_SEQ_OFF] == ostid_seq(oi) &&
+ name->name[LUSTRE_RES_ID_VER_OID_OFF] == ostid_id(oi);
+ }
}
+/* The same as osc_build_res_name() */
+static inline void ost_fid_build_resid(const struct lu_fid *fid,
+ struct ldlm_res_id *resname)
+{
+ if (fid_is_mdt0(fid) || fid_is_idif(fid)) {
+ struct ost_id oi;
+ oi.oi.oi_id = 0; /* gcc 4.7.2 complains otherwise */
+ if (fid_to_ostid(fid, &oi) != 0)
+ return;
+ ostid_build_res_name(&oi, resname);
+ } else {
+ fid_build_reg_res_name(fid, resname);
+ }
+}
+
+static inline void ost_fid_from_resid(struct lu_fid *fid,
+ const struct ldlm_res_id *name)
+{
+ if (fid_seq_is_mdt0(name->name[LUSTRE_RES_ID_VER_OID_OFF])) {
+ /* old resid */
+ struct ost_id oi;
+ ostid_set_seq(&oi, name->name[LUSTRE_RES_ID_VER_OID_OFF]);
+ ostid_set_id(&oi, name->name[LUSTRE_RES_ID_SEQ_OFF]);
+ ostid_to_fid(fid, &oi, 0);
+ } else {
+ /* new resid */
+ fid_extract_from_res_name(fid, name);
+ }
+}
/**
* Flatten 128-bit FID values into a 64-bit value for use as an inode number.
RETURN(ino ? ino : fid_oid(fid));
}
+static inline int lu_fid_diff(struct lu_fid *fid1, struct lu_fid *fid2)
+{
+ LASSERTF(fid_seq(fid1) == fid_seq(fid2), "fid1:"DFID", fid2:"DFID"\n",
+ PFID(fid1), PFID(fid2));
+
+ if (fid_is_idif(fid1) && fid_is_idif(fid2))
+ return fid_idif_id(fid1->f_seq, fid1->f_oid, fid1->f_ver) -
+ fid_idif_id(fid2->f_seq, fid2->f_oid, fid2->f_ver);
+
+ return fid_oid(fid1) - fid_oid(fid2);
+}
+
#define LUSTRE_SEQ_SRV_NAME "seq_srv"
#define LUSTRE_SEQ_CTL_NAME "seq_ctl"
/** @} fid */
-#endif /* __LINUX_FID_H */
+#endif /* __LUSTRE_FID_H */