Viewing: mdt_internal.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* Lustre Metadata Target (mdt) request handler
*
* Author: Peter Braam <braam@clusterfs.com>
* Author: Andreas Dilger <adilger@clusterfs.com>
* Author: Phil Schwan <phil@clusterfs.com>
* Author: Mike Shaver <shaver@clusterfs.com>
* Author: Nikita Danilov <nikita@clusterfs.com>
* Author: Huang Hua <huanghua@clusterfs.com>
*/
#ifndef _MDT_INTERNAL_H
#define _MDT_INTERNAL_H
#include <cfs_hash.h>
#include <upcall_cache.h>
#include <obd_class.h>
#include <lustre_disk.h>
#include <lu_target.h>
#include <md_object.h>
#include <lustre_fid.h>
#include <lustre_fld.h>
#include <lustre_req_layout.h>
#include <lustre_sec.h>
#include <lustre_idmap.h>
#include <lustre_quota.h>
#include <lustre_linkea.h>
#include <lustre_lmv.h>
struct mdt_object;
/* file data for open files on MDS */
struct mdt_file_data {
/** portals handle must be first */
struct portals_handle mfd_open_handle;
/* export data of portals_handle */
const struct mdt_export_data *mfd_owner;
/** open mode provided by client */
enum mds_open_flags mfd_open_flags;
/** protected by med_open_lock */
struct list_head mfd_list;
/** xid of the open request */
__u64 mfd_xid;
/** old handle in replay case */
struct lustre_handle mfd_open_handle_old;
/** point to opened object */
struct mdt_object *mfd_object;
};
#define CDT_NONBLOCKING_RESTORE (1ULL << 0)
#define CDT_NORETRY_ACTION (1ULL << 1)
#define CDT_POLICY_LAST CDT_NORETRY_ACTION
#define CDT_POLICY_SHIFT_COUNT 2
#define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
CDT_NORETRY_ACTION)
/* when adding a new policy, do not forget to update
* lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
*/
#define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
/* Coordinator states. Keep the cdt_transition table in sync. */
enum cdt_states { CDT_STOPPED = 0,
CDT_INIT,
CDT_RUNNING,
CDT_DISABLE,
CDT_STOPPING,
CDT_STATES_COUNT
};
static inline char *cdt_mdt_state2str(int state)
{
switch (state) {
case CDT_INIT:
return "init";
case CDT_RUNNING:
return "enabled";
case CDT_STOPPING:
return "stopping";
case CDT_STOPPED:
return "stopped";
case CDT_DISABLE:
return "disabled";
default:
return "unknown";
}
}
/* when multiple lock are needed, the lock order is
* cdt_agent_lock
* cdt_counter_lock
* cdt_request_lock
*/
struct coordinator {
refcount_t cdt_ref; /**< cdt refcount */
wait_queue_head_t cdt_waitq; /**< cdt wait queue */
wait_queue_head_t cdt_cancel_all; /**< cancel_all wait */
bool cdt_event; /**< coordinator event */
struct task_struct *cdt_task; /**< cdt thread handle */
struct lu_env cdt_env; /**< coordinator lustre
* env */
struct lu_context cdt_session; /** session for lu_ucred */
struct dentry *cdt_debugfs_dir; /**< cdt debugfs directory */
struct completion cdt_kobj_unregister;
struct kobject cdt_hsm_kobj; /* hsm sysfs object */
__u64 cdt_policy; /**< policy flags */
enum cdt_states cdt_state; /**< state */
struct mutex cdt_state_lock; /**< cdt_state lock */
atomic64_t cdt_last_cookie; /**< last cookie
* allocated */
struct rw_semaphore cdt_agent_lock; /**< protect agent list */
struct rw_semaphore cdt_request_lock; /**< protect request
* list */
timeout_t cdt_loop_period; /**< llog scan period */
timeout_t cdt_grace_delay; /**< request grace
* delay */
timeout_t cdt_active_req_timeout; /**< request timeout */
__u32 cdt_default_archive_id; /**< archive id used
* when none are
* specified */
u64 cdt_max_requests; /**< max count of started
* requests */
/** Current count of active requests */
atomic_t cdt_request_count; /** total */
atomic_t cdt_archive_count;
atomic_t cdt_restore_count;
atomic_t cdt_remove_count;
/* started requests (struct cdt_agent_req:car_cookie_hash)
* indexed by cookie
*/
struct cfs_hash *cdt_request_cookie_hash;
/* started requests (struct cdt_agent_req:car_request_list) */
struct list_head cdt_request_list;
struct list_head cdt_agents; /**< list of register
* agents */
struct rhashtable cdt_restore_hash; /* rhashtable for
* restore requests
*/
/* Bitmasks indexed by the HSMA_XXX constants. */
__u64 cdt_user_request_mask;
__u64 cdt_group_request_mask;
__u64 cdt_other_request_mask;
/* Remove archive on last unlink policy */
bool cdt_remove_archive_on_last_unlink;
bool cdt_wakeup_coordinator;
bool cdt_idle;
};
/* mdt state flag bits */
#define MDT_FL_CFGLOG 0
#define MDT_FL_SYNCED 1
/* possible values for mo_dom_lock */
enum {
NO_DOM_LOCK_ON_OPEN = 0,
TRYLOCK_DOM_ON_OPEN = 1,
/* not used anymore, left here for compatibility */
ALWAYS_DOM_LOCK_ON_OPEN = 2,
NUM_DOM_LOCK_ON_OPEN_MODES
};
struct mdt_statfs_cache {
struct obd_statfs msf_osfs;
__u64 msf_age;
};
enum mdt_rename_type {
RENAME_SAMEDIR_SIZE = 0,
RENAME_CROSSDIR_SRC_SIZE,
RENAME_CROSSDIR_TGT_SIZE,
RENAME_LAST
};
struct rename_stats {
ktime_t rs_init;
struct obd_histogram rs_hist[RENAME_LAST];
};
/* split directory automatically when sub file count exceeds 50k */
#define DIR_SPLIT_COUNT_DEFAULT 50000
/* directory auto-split allocate delta new stripes each time */
#define DIR_SPLIT_DELTA_DEFAULT 4
struct mdt_dir_restriper {
struct lu_env mdr_env;
struct lu_context mdr_session;
struct task_struct *mdr_task;
/* lock for below fields */
spinlock_t mdr_lock;
/* auto split when plain dir/shard sub files exceed threshold */
u64 mdr_dir_split_count;
/* auto split growth delta */
u32 mdr_dir_split_delta;
/* directories to split */
struct list_head mdr_auto_splitting;
/* directories under which sub files are migrating */
struct list_head mdr_migrating;
/* directories waiting to update layout after migration */
struct list_head mdr_updating;
/* time to update directory layout after migration */
time64_t mdr_update_time;
/* lum used in split/migrate/layout_change */
union lmv_mds_md mdr_lmv;
/* page used in readdir */
struct folio *mdr_folio;
};
struct mdt_device {
/* super-class */
struct lu_device mdt_lu_dev;
struct seq_server_site mdt_seq_site;
/* DLM name-space for meta-data locks maintained by this server */
struct ldlm_namespace *mdt_namespace;
/* ptlrpc handle for MDS->client connections (for lock ASTs). */
struct ptlrpc_client *mdt_ldlm_client;
/* underlying device */
struct obd_export *mdt_child_exp;
struct md_device *mdt_child;
struct dt_device *mdt_bottom;
struct obd_export *mdt_bottom_exp;
struct local_oid_storage *mdt_los;
/** target device */
struct lu_target mdt_lut;
/* Options bit-fields. */
struct {
unsigned int mo_user_xattr:1,
mo_acl:1,
mo_cos:1;
unsigned int mo_dom_lock;
} mdt_opts;
/* mdt state flags */
unsigned long mdt_state;
/* transaction callbacks */
struct dt_txn_callback mdt_txn_cb;
/* these values should be updated from lov if necessary.
* or should be placed somewhere else.
*/
int mdt_max_mdsize;
int mdt_max_ea_size;
/* Max modify RPCs, replaces max_mod_rpcs_per_client module param */
unsigned int mdt_max_mod_rpcs_in_flight;
/* preferred BRW size, decided by storage type and capability */
__u32 mdt_brw_size;
struct upcall_cache *mdt_identity_cache;
struct upcall_cache *mdt_identity_cache_int;
unsigned int mdt_evict_tgt_nids:1,
mdt_dom_read_open:1,
mdt_migrate_hsm_allowed:1,
mdt_enable_strict_som:1,
/* Enable remote dir on non-MDT0 */
mdt_enable_dir_migration:1,
mdt_enable_dir_restripe:1,
mdt_enable_dir_auto_split:1,
mdt_enable_foreign_dir:1,
mdt_enable_parallel_rename_dir:1,
mdt_enable_parallel_rename_file:1,
mdt_enable_parallel_rename_crossdir:1,
mdt_enable_remote_dir:1,
mdt_enable_remote_rename:1,
mdt_enable_rename_trylock:1,
mdt_enable_striped_dir:1,
mdt_readonly:1,
mdt_skip_lfsck:1,
/* dir restripe migrate dirent only */
mdt_dir_restripe_nsonly:1,
/* this is enabled by default, but once an
* old client joins, disable this to handle
* inherited default LMV on server.
*/
mdt_enable_dmv_implicit_inherit:1,
/* set dmv by setxattr, off by default */
mdt_enable_dmv_xattr:1;
/* user with gid can create remote/striped
* dir, and set default dir stripe
*/
gid_t mdt_enable_remote_dir_gid;
/* user with this gid can change projid */
gid_t mdt_enable_chprojid_gid;
kernel_cap_t mdt_enable_cap_mask;
/* user with gid can create foreign dirs */
gid_t mdt_enable_foreign_dir_gid;
/* user with this gid can pin/unpin file */
gid_t mdt_enable_pin_gid;
/* lock for osfs and md_root */
spinlock_t mdt_lock;
/* statfs optimization: we cache a bit */
struct mdt_statfs_cache mdt_sum_osfs;
struct mdt_statfs_cache mdt_osfs;
/* root squash */
struct root_squash_info mdt_squash;
struct rename_stats mdt_rename_stats;
struct lu_fid mdt_md_root_fid;
/* connection to quota master */
struct obd_export *mdt_qmt_exp;
/* quota master device associated with this MDT */
struct lu_device *mdt_qmt_dev;
struct coordinator mdt_coordinator;
/* inter-MDT connection count */
atomic_t mdt_mds_mds_conns;
/* MDT device async commit count, used for debug and sanity test */
atomic_t mdt_async_commit_count;
struct mdt_object *mdt_md_root;
struct mdt_dir_restriper mdt_restriper;
/* count of old clients that doesn't support DMV implicite inherit */
atomic_t mdt_dmv_old_client_count;
/* name of xattr used to store jobid in mdt inode */
char mdt_job_xattr[XATTR_JOB_MAX_LEN];
};
#define MDT_SERVICE_WATCHDOG_FACTOR (2)
#define MDT_COS_DEFAULT (0)
#define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
struct mdt_object {
struct lu_object_header mot_header;
struct lu_object mot_obj;
unsigned int mot_lov_created:1, /* lov object created */
mot_cache_attr:1, /* enable remote object
* attribute cache */
mot_restriping:1, /* dir restriping */
/* dir auto-split disabled */
mot_auto_split_disabled:1,
mot_lsom_inited:1, /* lsom was inited */
mot_discard_done:1; /* discard lock was sent */
int mot_write_count;
spinlock_t mot_write_lock;
/* Lock to protect create_data */
struct mutex mot_lov_mutex;
/* Lock to protect object's SOM update. */
struct mutex mot_som_mutex;
__u64 mot_lsom_size;
__u64 mot_lsom_blocks;
/* lock to protect read/write stages for Data-on-MDT files */
struct rw_semaphore mot_dom_sem;
/* Lock to protect lease open.
* Lease open acquires write lock; normal open acquires read lock
*/
struct rw_semaphore mot_open_sem;
atomic_t mot_lease_count;
atomic_t mot_open_count;
/* directory offset, used in sub file migration in dir restripe */
loff_t mot_restripe_offset;
/* link to mdt_restriper auto_splitting/migrating/updating */
struct list_head mot_restripe_linkage;
};
struct mdt_lock_handle {
/* Lock type, reg for cross-ref use or pdo lock. */
mdl_type_t mlh_type;
/* Regular lock */
struct lustre_handle mlh_reg_lh;
enum ldlm_mode mlh_reg_mode;
__u64 mlh_gid;
/* Pdirops lock */
struct lustre_handle mlh_pdo_lh;
enum ldlm_mode mlh_pdo_mode;
unsigned int mlh_pdo_hash;
unsigned int mlh_pdo_remote:1;
/* Remote regular lock */
struct lustre_handle mlh_rreg_lh;
enum ldlm_mode mlh_rreg_mode;
};
enum {
MDT_LH_PARENT, /* parent lockh */
MDT_LH_CHILD, /* child lockh */
MDT_LH_OLD, /* old lockh for rename */
MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
MDT_LH_NEW, /* new lockh for rename */
MDT_LH_RMT, /* used for return lh to caller */
MDT_LH_LOCAL, /* local lock never return to client */
MDT_LH_LOOKUP, /* lookup lock for source object in rename/migrate if
* it's remote object */
MDT_LH_NR
};
enum {
MDT_LOCAL_LOCK,
MDT_CROSS_LOCK
};
/* Special magical errno for communicaiton between mdt_reint_open()
* and mdt_intent_reint() which means return the lock to the client
* for subsequent cross ref open. Previously we used plain -EREMOTE
* but other functions called in that path might return it too and
* confuse us. This is not returned to the client. See LU-5370.
*/
#define MDT_EREMOTE_OPEN (EREMOTE + 1024)
struct mdt_reint_record {
enum mds_reint_op rr_opcode;
const struct lustre_handle *rr_open_handle;
const struct lustre_handle *rr_lease_handle;
const struct lu_fid *rr_fid1;
const struct lu_fid *rr_fid2;
struct lu_name rr_name;
struct lu_name rr_tgt_name;
void *rr_eadata;
int rr_eadatalen;
__u32 rr_flags;
__u16 rr_mirror_id;
__u32 rr_layout_ver;
};
enum mdt_reint_flag {
MRF_OPEN_TRUNC = BIT(0),
MRF_OPEN_RESEND = BIT(1),
};
/*
* Common data shared by mdt-level handlers. This is allocated per-thread to
* reduce stack consumption.
*/
struct mdt_thread_info {
/*
* XXX: Part One:
* The following members will be filled explicitly
* with specific data in mdt_thread_info_init().
*/
/* TODO: move this into mdt_session_key(with LCT_SESSION), because
* request handling may migrate from one server thread to another.
*/
struct req_capsule *mti_pill;
/* SUB request pill in a batch request. */
struct req_capsule mti_sub_pill;
/* although we have export in req, there are cases when it is not
* available, e.g. closing files upon export destroy
*/
struct obd_export *mti_exp;
/* A couple of lock handles. */
struct mdt_lock_handle mti_lh[MDT_LH_NR];
struct mdt_device *mti_mdt;
const struct lu_env *mti_env;
/* transaction number of current request */
__u64 mti_transno;
/*
* XXX: Part Two:
* The following members will be filled expilictly
* with zero in mdt_thread_info_init(). These members may be used
* by all requests.
*/
/* Object attributes. */
struct md_attr mti_attr;
struct md_attr mti_attr2; /* mdt_lvb.c */
/* Body for "habeo corpus" operations. */
const struct mdt_body *mti_body;
/* Host object. This is released at the end of mdt_handler(). */
struct mdt_object *mti_object;
/*
* Lock request for "habeo clavis" operations.
*/
const struct ldlm_request *mti_dlm_req;
__u32 mti_cross_ref:1,
/* big_lmm buffer was used and must be used in reply */
mti_big_lov_used:1,
mti_big_lmv_used:1,
mti_big_acl_used:1,
mti_som_strict:1,
/* Batch processing environment */
mti_batch_env:1,
mti_intent_lock:1;
/* opdata for mdt_reint_open(), has the same as
* ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
* value onto disk for recovery when mdt_trans_stop_cb() is called.
*/
__u64 mti_opdata;
/*
* XXX: Part Three:
* The following members will be filled explicitly
* with zero in mdt_reint_unpack(), because they are only used
* by reint requests (including mdt_reint_open()).
*/
/* reint record. contains information for reint operations. */
struct mdt_reint_record mti_rr;
__u64 mti_ver[PTLRPC_NUM_VERSIONS];
/* Operation specification (currently create and lookup) */
struct md_op_spec mti_spec;
/*
* XXX: Part Four:
* The following members will _NOT_ be initialized at all.
* DO NOT expect them to contain any valid value.
* They should be initialized explicitly by the user themselves.
*/
/* XXX: If something is in a union, make sure they do not conflict */
struct lu_fid mti_tmp_fid1;
struct lu_fid mti_tmp_fid2;
union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
union {
struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
char ns_name[48];/* for mdt_init0() */
struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
struct obd_statfs osfs; /* for mdt_statfs() */
struct {
/* for mdt_readpage() */
struct lu_rdpg mti_rdpg;
} rdpg;
struct {
struct md_attr attr;
} hsm;
struct {
struct md_attr attr;
} som;
} mti_u;
struct lustre_handle mti_open_handle;
loff_t mti_off;
struct lu_buf mti_buf;
struct lu_buf mti_big_buf;
/* Ops object filename */
struct lu_name mti_name;
char mti_filename[NAME_MAX + 1];
/* per-thread values, can be re-used, may be vmalloc'd */
void *mti_big_lov; /* was _lmm */
void *mti_big_lmv;
void *mti_big_acl;
int mti_big_lovsize;
int mti_big_lmvsize;
int mti_big_aclsize;
/* should be enough to fit lustre_mdt_attrs */
char mti_xattr_buf[128];
struct ldlm_enqueue_info mti_einfo;
/* einfo used by mdt_remote_object_lock_try() */
struct ldlm_enqueue_info mti_remote_einfo;
struct tg_reply_data *mti_reply_data;
/* FLR: layout change API */
struct md_layout_change mti_mlc;
struct lu_seq_range mti_range;
};
extern struct lu_context_key mdt_thread_key;
static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
{
return lu_env_info_get(env, &mdt_thread_key);
}
struct cdt_req_progress {
spinlock_t crp_lock; /**< protect tree */
struct rb_root_cached crp_root; /**< tree to track extent
* moved */
__u64 crp_total;
};
struct cdt_agent_req {
struct hlist_node car_cookie_hash; /**< find req by cookie */
struct list_head car_request_list; /**< to chain all the req. */
struct list_head car_scan_list; /**< list for scan process */
struct kref car_refcount; /**< reference counter */
struct obd_uuid car_uuid; /**< agent doing the req. */
struct hsm_mem_req_rec *car_hmm; /**< llog rec with cookies */
struct cdt_req_progress car_progress; /**< track data mvt
* progress */
struct cdt_agent_req *car_cancel; /**< corresponding cancel */
};
#define car_flags car_hmm->mr_rec.arr_flags /**< request original flags */
#define car_archive_id car_hmm->mr_rec.arr_archive_id /**< archive id */
#define car_req_update car_hmm->mr_rec.arr_req_change /**< last update time */
#define car_hai car_hmm->mr_rec.arr_hai /**< req. to the agent */
extern struct kmem_cache *mdt_hsm_car_kmem;
struct hsm_agent {
struct list_head ha_list; /* to chain the agents */
struct obd_uuid ha_uuid; /* agent uuid */
__u32 *ha_archive_id; /* archive id */
int ha_archive_cnt; /* number of archive entries
* 0 means any archive */
atomic_t ha_requests; /* current request count */
atomic_t ha_success; /* num of successful actions */
atomic_t ha_failure; /* number of failed actions */
};
struct cdt_restore_handle {
struct rhash_head crh_hash; /**< link to cdt_restore_hash */
struct lu_fid crh_fid; /**< fid of the object */
struct ldlm_extent crh_extent; /**< extent of the restore */
struct mdt_lock_handle crh_lh; /**< lock handle */
atomic_t crh_refc; /**< crh ref counter */
struct rcu_head crh_rcu; /**< crh rcu head */
};
extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
struct hsm_record_update {
__u64 cookie;
enum agent_req_status status;
};
struct hsm_mem_req_rec {
struct llog_logid mr_lid;
u64 mr_offset;
struct llog_agent_req_rec mr_rec;
};
/**
* data passed to llog_cat_process() callback
* to scan requests and take actions
*/
struct hsm_scan_request {
struct list_head hsr_cars;
char *hsr_fsname;
int hsr_used_sz;
u32 hsr_version;
u32 hsr_count;
};
static inline u32 hsr_get_archive_id(struct hsm_scan_request *rq)
{
struct cdt_agent_req *car;
if (rq->hsr_count > 0) {
car = list_first_entry(&rq->hsr_cars, struct cdt_agent_req,
car_scan_list);
return car->car_archive_id;
}
return 0;
}
static inline
const struct md_device_operations *mdt_child_ops(struct mdt_device *m)
{
LASSERT(m->mdt_child);
return m->mdt_child->md_ops;
}
static inline struct md_object *mdt_object_child(struct mdt_object *o)
{
LASSERT(o);
return lu2md(lu_object_next(&o->mot_obj));
}
static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
{
return info->mti_pill ? info->mti_pill->rc_req : NULL;
}
static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
{
LASSERT(info->mti_exp);
return exp_connect_flags(info->mti_exp);
}
static inline void mdt_object_get(const struct lu_env *env,
struct mdt_object *o)
{
ENTRY;
lu_object_get(&o->mot_obj);
EXIT;
}
static inline void mdt_object_put(const struct lu_env *env,
struct mdt_object *o)
{
ENTRY;
lu_object_put(env, &o->mot_obj);
EXIT;
}
static inline int mdt_object_exists(const struct mdt_object *o)
{
return lu_object_exists(&o->mot_obj);
}
static inline int mdt_object_remote(const struct mdt_object *o)
{
return lu_object_remote(&o->mot_obj);
}
int mdt_object_striped(struct mdt_thread_info *mti, struct mdt_object *obj);
static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
{
return lu_object_fid(&o->mot_obj);
}
static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
{
return mdt->mdt_lu_dev.ld_site;
}
static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
{
return &mdt->mdt_seq_site;
}
static inline u32 mdt_node_id(const struct mdt_device *mdt)
{
return mdt->mdt_seq_site.ss_node_id;
}
static inline void mdt_export_evict(struct obd_export *exp)
{
class_fail_export(exp);
}
/* Here we use LVB_TYPE to check dne client, because it is
* also landed on 2.4.
*/
static inline bool mdt_is_dne_client(struct obd_export *exp)
{
return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
}
static inline bool mdt_is_striped_client(struct obd_export *exp)
{
return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
}
__u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *dom_only);
static inline bool mdt_lmm_dom_only(struct lov_mds_md *lmm)
{
int dom_only = 0;
mdt_lmm_dom_entry_check(lmm, &dom_only);
return dom_only;
}
static inline __u32 mdt_lmm_dom_stripesize(struct lov_mds_md *lmm)
{
return mdt_lmm_dom_entry_check(lmm, NULL);
}
static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
{
struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
le16_to_cpu(lcm->lcm_mirror_count) > 0;
}
static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
{
if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
return false;
}
static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
{
struct lov_comp_md_v1 *comp_v1;
struct lov_mds_md *v1;
__u32 off;
int i;
comp_v1 = (struct lov_comp_md_v1 *)lmm;
for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
if (lmm_is_overstriping(v1))
return true;
}
return false;
}
static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
{
if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
return mdt_lmm_comp_overstriping(lmm);
return lmm_is_overstriping(lmm);
}
static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
{
return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
}
__u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
void mdt_set_disposition(struct mdt_thread_info *info,
struct ldlm_reply *rep, __u64 op_flag);
void mdt_clear_disposition(struct mdt_thread_info *info,
struct ldlm_reply *rep, __u64 op_flag);
void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
const struct lu_name *lname);
void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
void mdt_lh_reg_init(struct mdt_lock_handle *lh, struct ldlm_lock *lock);
int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
struct mdt_lock_handle *lh);
int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
struct mdt_lock_handle *lhc);
int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *obj,
struct mdt_lock_handle *lh, enum mds_ibits_locks ibits,
enum ldlm_mode mode);
int mdt_parent_lock(struct mdt_thread_info *info, struct mdt_object *o,
struct mdt_lock_handle *lh, const struct lu_name *lname,
enum ldlm_mode mode);
int mdt_object_stripes_lock(struct mdt_thread_info *info,
struct mdt_object *pobj, struct mdt_object *o,
struct mdt_lock_handle *lh,
struct ldlm_enqueue_info *einfo,
enum mds_ibits_locks ibits,
enum ldlm_mode mode);
int mdt_object_check_lock(struct mdt_thread_info *info,
struct mdt_object *parent, struct mdt_object *child,
struct mdt_lock_handle *lh,
enum mds_ibits_locks ibits, enum ldlm_mode mode);
int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
struct mdt_lock_handle *lh,
enum mds_ibits_locks *ibits,
enum mds_ibits_locks trybits, enum ldlm_mode mode);
/* below three lock functions are used internally */
int mdt_object_lock_internal(struct mdt_thread_info *info,
struct mdt_object *obj, const struct lu_fid *fid,
struct mdt_lock_handle *lh,
enum mds_ibits_locks *ibits,
enum mds_ibits_locks trybits,
bool cache);
int mdt_object_pdo_lock(struct mdt_thread_info *info, struct mdt_object *obj,
struct mdt_lock_handle *lh, const struct lu_name *name,
enum ldlm_mode mode, bool pdo_lock);
int mdt_object_lookup_lock(struct mdt_thread_info *info,
struct mdt_object *pobj, struct mdt_object *obj,
struct mdt_lock_handle *lh, enum ldlm_mode mode);
void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
struct mdt_lock_handle *lh, int decref);
void mdt_object_stripes_unlock(struct mdt_thread_info *info,
struct mdt_object *o, struct mdt_lock_handle *lh,
struct ldlm_enqueue_info *einfo, int decref);
struct mdt_object *mdt_object_new(const struct lu_env *env,
struct mdt_device *mdt,
const struct lu_fid *fid);
struct mdt_object *mdt_object_find(const struct lu_env *env,
struct mdt_device *mdt,
const struct lu_fid *fid);
struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *info,
const struct lu_fid *f,
struct mdt_lock_handle *lh,
enum mds_ibits_locks ibits,
enum ldlm_mode mode);
void mdt_object_unlock_put(struct mdt_thread_info *info,
struct mdt_object *o,
struct mdt_lock_handle *lh,
int decref);
void mdt_client_compatibility(struct mdt_thread_info *info);
enum mdt_name_flags {
MNF_FIX_ANON = 1,
};
int mdt_name_unpack(struct req_capsule *pill,
const struct req_msg_field *field,
struct lu_name *ln,
enum mdt_name_flags flags);
int mdt_close_unpack(struct mdt_thread_info *info);
int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
int mdt_reint_rec(struct mdt_thread_info *info, struct mdt_lock_handle *lh);
#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
struct mdt_object *o, struct lu_nodemap *nodemap);
#endif
void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
const struct lu_attr *attr, const struct lu_fid *fid);
int mdt_pack_size2body(struct mdt_thread_info *info,
const struct lu_fid *fid, struct lustre_handle *lh);
int mdt_getxattr(struct mdt_thread_info *info);
int mdt_reint_setxattr(struct mdt_thread_info *info,
struct mdt_lock_handle *lh);
void mdt_reconstruct(struct mdt_thread_info *info, struct mdt_lock_handle *lh);
void mdt_reconstruct_generic(struct mdt_thread_info *mti,
struct mdt_lock_handle *lhc);
int mdt_export_stats_init(struct obd_device *obd, struct obd_export *exp,
void *client_nid);
int mdt_lock_new_child(struct mdt_thread_info *info,
struct mdt_object *o,
struct mdt_lock_handle *child_lockh);
void mdt_mfd_set_mode(struct mdt_file_data *mfd, enum mds_open_flags o_flags);
int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
const struct lustre_handle *open_handle,
bool is_replay);
int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
struct mdt_object *pobj,
struct mdt_object *obj);
int mdt_get_info(struct tgt_session_info *tsi);
int mdt_attr_get_complex(struct mdt_thread_info *info,
struct mdt_object *o, struct md_attr *ma);
int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
const char *name);
int __mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
struct md_attr *ma, const char *name);
int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
struct md_attr *ma, const char *name);
int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
struct lu_fid *pfid);
int mdt_attr_get_pfid_name(struct mdt_thread_info *info, struct mdt_object *o,
struct lu_fid *pfid, struct lu_name *lname);
int mdt_write_get(struct mdt_object *o);
void mdt_write_put(struct mdt_object *o);
int mdt_write_read(struct mdt_object *o);
struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
void mdt_mfd_free(struct mdt_file_data *mfd);
int mdt_close(struct tgt_session_info *tsi);
int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
struct md_attr *ma);
int mdt_fix_reply(struct mdt_thread_info *info);
int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *dir,
struct md_attr *attr);
void mdt_reconstruct_open(struct mdt_thread_info *info,
struct mdt_lock_handle *lh);
int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
struct mdt_lock_handle *lhc,
struct md_layout_change *spec);
int find_name_matching_hash(struct mdt_thread_info *info, struct lu_name *lname,
struct mdt_object *parent, struct mdt_object *child);
int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
int mdt_check_ucred(struct mdt_thread_info *info);
int mdt_init_ucred(struct mdt_thread_info *info, struct mdt_body *body);
int mdt_init_ucred_reint(struct mdt_thread_info *info);
void mdt_exit_ucred(struct mdt_thread_info *info);
bool mdt_enable_gid_deny(struct lu_ucred *uc, unsigned int cap, gid_t need_gid);
int mdt_check_resource_ids(struct mdt_thread_info *info,
struct mdt_object *obj);
int mdt_version_get_check(struct mdt_thread_info *info, struct mdt_object *mto,
int idx);
void mdt_version_get_save(struct mdt_thread_info *info, struct mdt_object *mto,
int idx);
int mdt_version_get_check_save(struct mdt_thread_info *info,
struct mdt_object *mto, int index);
int mdt_lookup_version_check(struct mdt_thread_info *info,
struct mdt_object *p,
const struct lu_name *lname,
struct lu_fid *fid, int idx);
void mdt_thread_info_reset(struct mdt_thread_info *info);
void mdt_thread_info_init(struct ptlrpc_request *req,
struct mdt_thread_info *mti);
void mdt_thread_info_fini(struct mdt_thread_info *mti);
struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
void mdt_intent_fixup_resent(struct mdt_thread_info *info,
struct ldlm_lock *new_lock,
struct mdt_lock_handle *lh, __u64 flags);
int mdt_intent_lock_replace(struct mdt_thread_info *info,
struct ldlm_lock **lockp,
struct mdt_lock_handle *lh,
__u64 flags, int result);
bool mdt_layout_version_check(struct mdt_thread_info *info,
struct mdt_object *parent, __u32 version);
int hsm_init_ucred(struct lu_ucred *uc);
int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
const struct md_hsm *mh);
int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
void *data, int flag);
int mdt_links_read(struct mdt_thread_info *info,
struct mdt_object *mdt_obj,
struct linkea_data *ldata);
int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
struct mdt_body *repbody);
int mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
struct mdt_object *child);
int mdt_pack_encctx_in_reply(struct mdt_thread_info *info,
struct mdt_object *child);
void mdt_prep_ma_buf_from_rep(struct mdt_thread_info *info,
struct mdt_object *obj, struct md_attr *ma,
enum mds_open_flags open_flags);
static inline struct mdt_device *mdt_dev(struct lu_device *d)
{
return container_of_safe(d, struct mdt_device, mdt_lu_dev);
}
static inline struct mdt_object *mdt_obj(struct lu_object *o)
{
return container_of_safe(o, struct mdt_object, mot_obj);
}
static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
{
struct lu_object *lo;
struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
lo = lu_object_locate(mo->mot_obj.lo_header,
mdt->mdt_bottom->dd_lu_dev.ld_type);
return lu2dt(lo);
}
static inline bool agent_req_in_final_state(enum agent_req_status ars)
{
return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
(ars == ARS_CANCELED));
}
/* mdt/mdt_identity.c */
#define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
#define UC_IDCACHE_HASH_SIZE 128
extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
struct md_identity *mdt_identity_get(struct upcall_cache *cache, __u32 uid,
struct mdt_thread_info *info);
void mdt_identity_put(struct upcall_cache *cache, struct md_identity *identity);
void mdt_flush_identity(struct upcall_cache *cache, int uid);
__u32 mdt_identity_get_perm(struct md_identity *identity, struct lnet_nid *nid);
/* mdt/mdt_recovery.c */
__u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
/* mdt/mdt_batch.c */
int mdt_batch(struct tgt_session_info *tsi);
/* mdt/mdt_hsm.c */
int mdt_hsm_state_get(struct tgt_session_info *tsi);
int mdt_hsm_state_set(struct tgt_session_info *tsi);
int mdt_hsm_action(struct tgt_session_info *tsi);
int mdt_hsm_progress(struct tgt_session_info *tsi);
int mdt_hsm_ct_register(struct tgt_session_info *tsi);
int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
int mdt_hsm_request(struct tgt_session_info *tsi);
int mdt_hsm_data_version(struct tgt_session_info *tsi);
/* mdt/mdt_hsm_cdt_actions.c */
extern const struct file_operations mdt_hsm_actions_fops;
void dump_llog_agent_req_rec(const char *prefix,
const struct llog_agent_req_rec *larr);
int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
llog_cb_t cb, void *data, u32 start_cat_idx,
u32 start_rec_idx);
int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
__u32 archive_id, __u64 flags,
struct hsm_action_item *hai);
int mdt_hsm_agent_modify_record(const struct lu_env *env,
struct mdt_device *mdt,
struct hsm_mem_req_rec *hmm);
/* mdt/mdt_hsm_cdt_agent.c */
extern const struct file_operations mdt_hsm_agent_fops;
int mdt_hsm_agent_register(struct mdt_thread_info *info,
const struct obd_uuid *uuid,
int nr_archives, __u32 *archive_num);
int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
const struct obd_uuid *uuid,
__u32 archive_mask);
int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
const struct obd_uuid *uuid);
int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
int succ_rq, int fail_rq, int new_rq,
const struct obd_uuid *uuid);
int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
struct obd_uuid *uuid);
int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_scan_request *rq,
bool purge);
/* mdt/mdt_hsm_cdt_client.c */
int mdt_hsm_add_actions(struct mdt_thread_info *info,
struct hsm_action_list *hal);
int mdt_hsm_get_action(struct mdt_thread_info *mti,
const struct lu_fid *fid,
enum hsm_copytool_action *action,
enum agent_req_status *status,
struct hsm_extent *extent);
bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
const struct lu_fid *fid);
/* mdt/mdt_hsm_cdt_requests.c */
extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
extern const struct file_operations mdt_hsm_active_requests_fops;
void __maybe_unused dump_requests(char *prefix, struct coordinator *cdt);
struct cdt_agent_req *mdt_cdt_alloc_request(struct obd_uuid *uuid,
struct llog_agent_req_rec *rec);
void mdt_cdt_free_request(struct cdt_agent_req *car);
int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
void mdt_cdt_get_request(struct cdt_agent_req *car);
void mdt_cdt_put_request(struct cdt_agent_req *car);
struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
const struct hsm_progress_kernel *pgs);
int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
/* mdt/mdt_coordinator.c */
void mdt_hsm_dump_hal(int level, const char *prefix,
struct hsm_action_list *hal);
int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
const struct lu_fid *fid,
const struct hsm_extent *he);
bool cdt_restore_handle_exists(struct coordinator *cdt,
const struct lu_fid *fid);
void cdt_restore_handle_del(struct mdt_thread_info *mti,
struct coordinator *cdt, const struct lu_fid *fid);
int cdt_getref_try(struct coordinator *cdt);
void cdt_putref(struct coordinator *cdt);
/* coordinator management */
int mdt_hsm_cdt_init(struct mdt_device *mdt);
int mdt_hsm_cdt_stop(struct mdt_device *mdt);
int mdt_hsm_cdt_fini(struct mdt_device *mdt);
/*
* Signal the coordinator has work to do
* \param cdt [IN] coordinator
*/
static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
{
cdt->cdt_event = true;
}
/* coordinator control sysfs interface */
ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
char *buf);
ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
const char *buffer, size_t count);
int hsm_cdt_tunables_init(struct mdt_device *mdt);
void hsm_cdt_tunables_fini(struct mdt_device *mdt);
/* md_hsm helpers */
struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
const struct lu_fid *fid,
struct md_hsm *hsm);
/* actions/request helpers */
int mdt_hsm_add_hsr(struct mdt_thread_info *mti, struct hsm_scan_request *hsr,
struct obd_uuid *uuid);
bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
u32 archive_id, u64 rq_flags,
const struct md_hsm *hsm);
int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
struct hsm_progress_kernel *pgs);
extern struct lu_context_key mdt_thread_key;
/* debug issues helper starts here*/
static inline int mdt_fail_write(const struct lu_env *env,
struct dt_device *dd, int id)
{
if (CFS_FAIL_CHECK_ORSET(id, CFS_FAIL_ONCE)) {
CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
id);
return dt_ro(env, dd);
/* We set FAIL_ONCE because we never "un-fail" a device */
}
return 0;
}
static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
{
return &req->rq_export->exp_mdt_data;
}
static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
{
return mdt_dev(exp->exp_obd->obd_lu_dev);
}
static inline bool mdt_rdonly(struct obd_export *exp)
{
return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
mdt_exp2dev(exp)->mdt_readonly);
}
typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
struct mdt_lock_handle *lhc);
static inline int mdt_check_resent(struct mdt_thread_info *info,
mdt_reconstruct_t reconstruct,
struct mdt_lock_handle *lhc)
{
struct ptlrpc_request *req = mdt_info_req(info);
int rc = 0;
ENTRY;
if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
OBD_ALLOC_PTR(info->mti_reply_data);
if (info->mti_reply_data == NULL)
RETURN(-ENOMEM);
rc = req_can_reconstruct(req, info->mti_reply_data);
if (rc == 1) {
reconstruct(info, lhc);
} else {
DEBUG_REQ(D_HA, req,
"no reply data found for RESENT req, rc = %d",
rc);
}
OBD_FREE_PTR(info->mti_reply_data);
info->mti_reply_data = NULL;
}
RETURN(rc);
}
struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
static inline int is_identity_get_disabled(struct upcall_cache *cache)
{
return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
}
int mdt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
void *data, int flag);
static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
{
return -ELDLM_NO_LOCK_DATA;
}
/* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
static inline int mdt_fid_lock(const struct lu_env *env,
struct ldlm_namespace *ns,
struct lustre_handle *lh, enum ldlm_mode mode,
union ldlm_policy_data *policy,
const struct ldlm_res_id *res_id,
__u64 flags, const __u64 *client_cookie)
{
int rc;
bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
LASSERT(ns != NULL);
LASSERT(lh != NULL);
rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
mode, &flags, mdt_blocking_ast,
ldlm_completion_ast,
glimpse ? mdt_dom_glimpse_ast : NULL,
NULL, 0, LVB_T_NONE, client_cookie, lh);
return rc == ELDLM_OK ? 0 : -EIO;
}
static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
{
ldlm_lock_decref(lh, mode);
}
/* this is identical to say this is a DNE system */
static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
{
return mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING;
}
/* mdt_som.c */
int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
enum lustre_som_flags flag, __u64 size, __u64 blocks);
int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
struct md_attr *ma);
int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
bool truncate);
/* mdt_lvb.c */
extern struct ldlm_valblock_ops mdt_lvbo;
int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
struct ptlrpc_request *req, bool increase_only);
void mdt_enable_cos(struct mdt_device *dev, bool enable);
int mdt_cos_is_enabled(struct mdt_device *mdt);
/* lprocfs stuff */
enum mdt_stat_idx {
LPROC_MDT_OPEN,
LPROC_MDT_CLOSE,
LPROC_MDT_MKNOD,
LPROC_MDT_LINK,
LPROC_MDT_UNLINK,
LPROC_MDT_MKDIR,
LPROC_MDT_RMDIR,
LPROC_MDT_RENAME,
LPROC_MDT_GETATTR,
LPROC_MDT_SETATTR,
LPROC_MDT_GETXATTR,
LPROC_MDT_SETXATTR,
LPROC_MDT_STATFS,
LPROC_MDT_SYNC,
LPROC_MDT_RENAME_SAMEDIR,
LPROC_MDT_RENAME_PAR_FILE,
LPROC_MDT_RENAME_PAR_DIR,
LPROC_MDT_RENAME_CROSSDIR,
LPROC_MDT_RENAME_TRYLOCK,
LPROC_MDT_IO_READ,
LPROC_MDT_IO_WRITE,
LPROC_MDT_IO_READ_BYTES,
LPROC_MDT_IO_WRITE_BYTES,
LPROC_MDT_IO_PUNCH,
LPROC_MDT_MIGRATE,
LPROC_MDT_FALLOCATE,
LPROC_MDT_LAST,
};
void mdt_counter_incr(struct ptlrpc_request *req, int opcode, long amount);
void mdt_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset,
enum lprocfs_counter_config cntr_umask);
int mdt_tunables_init(struct mdt_device *mdt, const char *name);
void mdt_tunables_fini(struct mdt_device *mdt);
/* lustre/mdt_mdt_lproc.c */
int ldebugfs_mdt_open_files_seq_open(struct inode *inode,
struct file *file);
void mdt_rename_counter_tally(struct mdt_thread_info *info,
struct mdt_device *mdt,
struct ptlrpc_request *req,
struct mdt_object *src, struct mdt_object *tgt,
enum mdt_stat_idx msi, s64 count);
static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
{
return mdt->mdt_lu_dev.ld_obd;
}
extern const struct lu_device_operations mdt_lu_ops;
extern unsigned int mdt_enable_flr_ec;
static inline char *mdt_obd_name(struct mdt_device *mdt)
{
return mdt->mdt_lu_dev.ld_obd->obd_name;
}
int mds_mod_init(void);
void mds_mod_exit(void);
static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
{
struct obd_export *exp = req->rq_export;
char *jobid = NULL;
if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
jobid = lustre_msg_get_jobid(req->rq_reqmsg);
return jobid;
}
/* MDT IO */
#define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
struct obdo *oa, int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int *nr_local,
struct niobuf_local *lnb);
int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
struct obdo *oa, int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int npages,
struct niobuf_local *lnb, int old_rc, int nob,
ktime_t kstart);
int mdt_punch_hdl(struct tgt_session_info *tsi);
int mdt_fallocate_hdl(struct tgt_session_info *tsi);
int mdt_fiemap_get(struct tgt_session_info *tsi);
int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
struct ldlm_lock **lockp, __u64 flags);
int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
struct ldlm_lock **lockp, __u64 flags);
int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
struct lustre_handle *lh);
void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
struct ldlm_resource *res, bool increase_only);
void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
struct obdo *oa, bool increase_only);
int mdt_dom_lvb_alloc(struct ldlm_resource *res);
static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
struct mdt_object *mo)
{
return lu_object_is_dying(&mo->mot_header) &&
S_ISREG(lu_object_attr(&mo->mot_obj)) &&
!mo->mot_discard_done;
}
int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
const struct lu_fid *fid, struct mdt_body *mb,
bool dom_lock);
bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
const struct lu_fid *fid);
void mdt_hp_brw(struct tgt_session_info *tsi);
void mdt_hp_punch(struct tgt_session_info *tsi);
int mdt_data_version_get(struct tgt_session_info *tsi);
int mdt_io_set_info(struct tgt_session_info *tsi);
/* grants */
long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
u64 want, bool conservative);
extern struct kmem_cache *ldlm_glimpse_work_kmem;
static inline bool mdt_changelog_allow(struct mdt_thread_info *info,
struct obd_export *exp)
{
struct lu_ucred *uc = NULL;
bool is_admin;
int rc;
if (!info->mti_body)
#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 2, 53, 0)
{
/* if client does not send mti_body, check nodemap directly */
enum nodemap_rbac_roles rbac = NODEMAP_RBAC_ALL;
struct lu_nodemap *nodemap;
nodemap = nodemap_get_from_exp(exp);
if (!IS_ERR_OR_NULL(nodemap)) {
rbac = nodemap->nmf_rbac;
nodemap_putref(nodemap);
}
return rbac & NODEMAP_RBAC_CHLG_OPS;
}
#else
return false;
#endif
rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
if (rc < 0)
return false;
uc = mdt_ucred(info);
is_admin = (uc->uc_uid == 0 && uc->uc_gid == 0 &&
cap_raised(uc->uc_cap, CAP_SYS_ADMIN) &&
uc->uc_rbac_chlg_ops);
mdt_exit_ucred(info);
return is_admin;
}
/* We forbid operations from encryption-unaware clients if they try to
* manipulate encrypted files/directories.
*/
static inline int mdt_check_enc(struct mdt_thread_info *info,
struct mdt_object *obj)
{
struct obd_export *exp;
struct md_attr ma = { 0 };
int rc = 0;
if (!mdt_info_req(info))
/* no req, so cannot tell about client connection flags:
* allow access
*/
return 0;
exp = mdt_info_req(info)->rq_export;
if (exp_connect_encrypt(exp))
/* client is encryption aware: fine */
return 0;
ma.ma_need = MA_INODE;
mdt_attr_get_complex(info, obj, &ma);
if (ma.ma_attr.la_valid & LA_FLAGS &&
ma.ma_attr.la_flags & LUSTRE_ENCRYPT_FL)
rc = -ENOKEY;
if (rc)
CDEBUG(D_SEC, "%s: operation on encrypted "DFID
" from encryption-unaware client %s: %d\n",
mdt_obd_name(info->mti_mdt),
PFID(lu_object_fid(&obj->mot_obj)),
libcfs_nidstr(&exp->exp_connection->c_peer.nid), rc);
return rc;
}
int mdt_fids_different_target(struct mdt_thread_info *info,
const struct lu_fid *fid1,
const struct lu_fid *fid2);
int mdt_reint_migrate(struct mdt_thread_info *info,
struct mdt_lock_handle *unused);
int mdt_dir_layout_update(struct mdt_thread_info *info);
/* directory restripe */
int mdt_restripe_internal(struct mdt_thread_info *info,
struct mdt_object *parent,
struct mdt_object *child,
const struct lu_name *lname,
struct lu_fid *tfid,
struct md_op_spec *spec,
struct md_attr *ma);
int mdt_restriper_start(struct mdt_device *mdt);
void mdt_restriper_stop(struct mdt_device *mdt);
void mdt_auto_split_add(struct mdt_thread_info *info, struct mdt_object *o);
void mdt_restripe_migrate_add(struct mdt_thread_info *info,
struct mdt_object *o);
void mdt_restripe_update_add(struct mdt_thread_info *info,
struct mdt_object *o);
int mdt_is_remote_object(struct mdt_thread_info *info,
struct mdt_object *parent,
struct mdt_object *child);
static unsigned int max_mod_rpcs_per_client = OBD_MAX_RIF_DEFAULT;
#if OBD_OCD_VERSION(3, 0, 53, 0) > LUSTRE_VERSION_CODE
static inline bool mdt_max_mod_rpcs_changed(struct mdt_device *mdt)
{
return max_mod_rpcs_per_client != OBD_MAX_RIF_DEFAULT &&
mdt->mdt_max_mod_rpcs_in_flight == OBD_MAX_RIF_DEFAULT;
}
#else
#define mdt_max_mod_rpcs_changed(mdt) false
#endif
#endif /* _MDT_INTERNAL_H */
