--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#ifndef __OBD_H
+#define __OBD_H
+
+#include "linux/obd.h"
+
+#define IOC_OSC_TYPE 'h'
+#define IOC_OSC_MIN_NR 20
+#define IOC_OSC_SET_ACTIVE _IOWR(IOC_OSC_TYPE, 21, struct obd_device *)
+#define IOC_OSC_MAX_NR 50
+
+#define IOC_MDC_TYPE 'i'
+#define IOC_MDC_MIN_NR 20
+#define IOC_MDC_MAX_NR 50
+
+#include "lustre/lustre_idl.h"
+#include "lustre_lib.h"
+#include "lu_ref.h"
+#include "lustre_export.h"
+#include "lustre_fid.h"
+#include "lustre_fld.h"
+#include "lustre_capa.h"
+
+#define MAX_OBD_DEVICES 8192
+
+struct osc_async_rc {
+ int ar_rc;
+ int ar_force_sync;
+ __u64 ar_min_xid;
+};
+
+struct lov_oinfo { /* per-stripe data structure */
+ struct ost_id loi_oi; /* object ID/Sequence on the target OST */
+ int loi_ost_idx; /* OST stripe index in lov_tgt_desc->tgts */
+ int loi_ost_gen; /* generation of this loi_ost_idx */
+
+ unsigned long loi_kms_valid:1;
+ __u64 loi_kms; /* known minimum size */
+ struct ost_lvb loi_lvb;
+ struct osc_async_rc loi_ar;
+};
+
+static inline void loi_kms_set(struct lov_oinfo *oinfo, __u64 kms)
+{
+ oinfo->loi_kms = kms;
+ oinfo->loi_kms_valid = 1;
+}
+
+static inline void loi_init(struct lov_oinfo *loi)
+{
+}
+
+struct lov_stripe_md {
+ atomic_t lsm_refc;
+ spinlock_t lsm_lock;
+ pid_t lsm_lock_owner; /* debugging */
+
+ /* maximum possible file size, might change as OSTs status changes,
+ * e.g. disconnected, deactivated */
+ __u64 lsm_maxbytes;
+ struct {
+ /* Public members. */
+ struct ost_id lw_object_oi; /* lov object id/seq */
+
+ /* LOV-private members start here -- only for use in lov/. */
+ __u32 lw_magic;
+ __u32 lw_stripe_size; /* size of the stripe */
+ __u32 lw_pattern; /* striping pattern (RAID0, RAID1) */
+ __u16 lw_stripe_count; /* number of objects being striped over */
+ __u16 lw_layout_gen; /* generation of the layout */
+ char lw_pool_name[LOV_MAXPOOLNAME]; /* pool name */
+ } lsm_wire;
+
+ struct lov_oinfo *lsm_oinfo[0];
+};
+
+#define lsm_oi lsm_wire.lw_object_oi
+#define lsm_magic lsm_wire.lw_magic
+#define lsm_layout_gen lsm_wire.lw_layout_gen
+#define lsm_stripe_size lsm_wire.lw_stripe_size
+#define lsm_pattern lsm_wire.lw_pattern
+#define lsm_stripe_count lsm_wire.lw_stripe_count
+#define lsm_pool_name lsm_wire.lw_pool_name
+
+static inline bool lsm_is_released(struct lov_stripe_md *lsm)
+{
+ return !!(lsm->lsm_pattern & LOV_PATTERN_F_RELEASED);
+}
+
+static inline bool lsm_has_objects(struct lov_stripe_md *lsm)
+{
+ if (lsm == NULL)
+ return false;
+ if (lsm_is_released(lsm))
+ return false;
+ return true;
+}
+
+static inline int lov_stripe_md_size(unsigned int stripe_count)
+{
+ struct lov_stripe_md lsm;
+
+ return sizeof(lsm) + stripe_count * sizeof(lsm.lsm_oinfo[0]);
+}
+
+struct obd_info;
+
+typedef int (*obd_enqueue_update_f)(void *cookie, int rc);
+
+/* obd info for a particular level (lov, osc). */
+struct obd_info {
+ /* Lock policy. It keeps an extent which is specific for a particular
+ * OSC. (e.g. lov_prep_enqueue_set initialises extent of the policy,
+ * and osc_enqueue passes it into ldlm_lock_match & ldlm_cli_enqueue. */
+ ldlm_policy_data_t oi_policy;
+ /* Flags used for set request specific flags:
+ - while lock handling, the flags obtained on the enqueue
+ request are set here.
+ - while stats, the flags used for control delay/resend.
+ - while setattr, the flags used for distinguish punch operation
+ */
+ __u64 oi_flags;
+ /* Lock handle specific for every OSC lock. */
+ struct lustre_handle *oi_lockh;
+ /* lsm data specific for every OSC. */
+ struct lov_stripe_md *oi_md;
+ /* obdo data specific for every OSC, if needed at all. */
+ struct obdo *oi_oa;
+ /* statfs data specific for every OSC, if needed at all. */
+ struct obd_statfs *oi_osfs;
+ /* An update callback which is called to update some data on upper
+ * level. E.g. it is used for update lsm->lsm_oinfo at every received
+ * request in osc level for enqueue requests. It is also possible to
+ * update some caller data from LOV layer if needed. */
+ obd_enqueue_update_f oi_cb_up;
+ /* oss capability, its type is obd_capa in client to avoid copy.
+ * in contrary its type is lustre_capa in OSS. */
+ void *oi_capa;
+ /* transfer jobid from ost_sync() to filter_sync()... */
+ char *oi_jobid;
+};
+
+/* compare all relevant fields. */
+static inline int lov_stripe_md_cmp(struct lov_stripe_md *m1,
+ struct lov_stripe_md *m2)
+{
+ /*
+ * ->lsm_wire contains padding, but it should be zeroed out during
+ * allocation.
+ */
+ return memcmp(&m1->lsm_wire, &m2->lsm_wire, sizeof(m1->lsm_wire));
+}
+
+static inline int lov_lum_lsm_cmp(struct lov_user_md *lum,
+ struct lov_stripe_md *lsm)
+{
+ if (lsm->lsm_magic != lum->lmm_magic)
+ return 1;
+ if ((lsm->lsm_stripe_count != 0) && (lum->lmm_stripe_count != 0) &&
+ (lsm->lsm_stripe_count != lum->lmm_stripe_count))
+ return 2;
+ if ((lsm->lsm_stripe_size != 0) && (lum->lmm_stripe_size != 0) &&
+ (lsm->lsm_stripe_size != lum->lmm_stripe_size))
+ return 3;
+ if ((lsm->lsm_pattern != 0) && (lum->lmm_pattern != 0) &&
+ (lsm->lsm_pattern != lum->lmm_pattern))
+ return 4;
+ if ((lsm->lsm_magic == LOV_MAGIC_V3) &&
+ (strncmp(lsm->lsm_pool_name,
+ ((struct lov_user_md_v3 *)lum)->lmm_pool_name,
+ LOV_MAXPOOLNAME) != 0))
+ return 5;
+ return 0;
+}
+
+static inline int lov_lum_swab_if_needed(struct lov_user_md_v3 *lumv3,
+ int *lmm_magic,
+ struct lov_user_md *lum)
+{
+ if (lum && copy_from_user(lumv3, lum, sizeof(struct lov_user_md_v1)))
+ return -EFAULT;
+
+ *lmm_magic = lumv3->lmm_magic;
+
+ if (*lmm_magic == __swab32(LOV_USER_MAGIC_V1)) {
+ lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lumv3);
+ *lmm_magic = LOV_USER_MAGIC_V1;
+ } else if (*lmm_magic == LOV_USER_MAGIC_V3) {
+ if (lum && copy_from_user(lumv3, lum, sizeof(*lumv3)))
+ return -EFAULT;
+ } else if (*lmm_magic == __swab32(LOV_USER_MAGIC_V3)) {
+ if (lum && copy_from_user(lumv3, lum, sizeof(*lumv3)))
+ return -EFAULT;
+ lustre_swab_lov_user_md_v3(lumv3);
+ *lmm_magic = LOV_USER_MAGIC_V3;
+ } else if (*lmm_magic != LOV_USER_MAGIC_V1) {
+ CDEBUG(D_IOCTL,
+ "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n",
+ *lmm_magic, LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+void lov_stripe_lock(struct lov_stripe_md *md);
+void lov_stripe_unlock(struct lov_stripe_md *md);
+
+struct obd_type {
+ struct list_head typ_chain;
+ struct obd_ops *typ_dt_ops;
+ struct md_ops *typ_md_ops;
+ struct proc_dir_entry *typ_procroot;
+ char *typ_name;
+ int typ_refcnt;
+ struct lu_device_type *typ_lu;
+ spinlock_t obd_type_lock;
+};
+
+struct brw_page {
+ u64 off;
+ struct page *pg;
+ int count;
+ u32 flag;
+};
+
+/* llog contexts */
+enum llog_ctxt_id {
+ LLOG_CONFIG_ORIG_CTXT = 0,
+ LLOG_CONFIG_REPL_CTXT,
+ LLOG_MDS_OST_ORIG_CTXT,
+ LLOG_MDS_OST_REPL_CTXT,
+ LLOG_SIZE_ORIG_CTXT,
+ LLOG_SIZE_REPL_CTXT,
+ LLOG_RD1_ORIG_CTXT,
+ LLOG_RD1_REPL_CTXT,
+ LLOG_TEST_ORIG_CTXT,
+ LLOG_TEST_REPL_CTXT,
+ LLOG_LOVEA_ORIG_CTXT,
+ LLOG_LOVEA_REPL_CTXT,
+ LLOG_CHANGELOG_ORIG_CTXT, /**< changelog generation on mdd */
+ LLOG_CHANGELOG_REPL_CTXT, /**< changelog access on clients */
+ LLOG_CHANGELOG_USER_ORIG_CTXT, /**< for multiple changelog consumers */
+ LLOG_AGENT_ORIG_CTXT, /**< agent requests generation on cdt */
+ LLOG_MAX_CTXTS
+};
+
+struct timeout_item {
+ enum timeout_event ti_event;
+ unsigned long ti_timeout;
+ timeout_cb_t ti_cb;
+ void *ti_cb_data;
+ struct list_head ti_obd_list;
+ struct list_head ti_chain;
+};
+
+#define OSC_MAX_RIF_DEFAULT 8
+#define MDS_OSC_MAX_RIF_DEFAULT 50
+#define OSC_MAX_RIF_MAX 256
+#define OSC_MAX_DIRTY_DEFAULT (OSC_MAX_RIF_DEFAULT * 4)
+#define OSC_MAX_DIRTY_MB_MAX 2048 /* arbitrary, but < MAX_LONG bytes */
+#define OSC_DEFAULT_RESENDS 10
+
+/* possible values for fo_sync_lock_cancel */
+enum {
+ NEVER_SYNC_ON_CANCEL = 0,
+ BLOCKING_SYNC_ON_CANCEL = 1,
+ ALWAYS_SYNC_ON_CANCEL = 2,
+ NUM_SYNC_ON_CANCEL_STATES
+};
+
+#define MDC_MAX_RIF_DEFAULT 8
+#define MDC_MAX_RIF_MAX 512
+
+struct mdc_rpc_lock;
+struct obd_import;
+struct client_obd {
+ struct rw_semaphore cl_sem;
+ struct obd_uuid cl_target_uuid;
+ struct obd_import *cl_import; /* ptlrpc connection state */
+ int cl_conn_count;
+ /* max_mds_easize is purely a performance thing so we don't have to
+ * call obd_size_diskmd() all the time. */
+ int cl_default_mds_easize;
+ int cl_max_mds_easize;
+ int cl_default_mds_cookiesize;
+ int cl_max_mds_cookiesize;
+
+ enum lustre_sec_part cl_sp_me;
+ enum lustre_sec_part cl_sp_to;
+ struct sptlrpc_flavor cl_flvr_mgc; /* fixed flavor of mgc->mgs */
+
+ /* the grant values are protected by loi_list_lock below */
+ long cl_dirty; /* all _dirty_ in bytes */
+ long cl_dirty_max; /* allowed w/o rpc */
+ long cl_dirty_transit; /* dirty synchronous */
+ long cl_avail_grant; /* bytes of credit for ost */
+ long cl_lost_grant; /* lost credits (trunc) */
+
+ /* since we allocate grant by blocks, we don't know how many grant will
+ * be used to add a page into cache. As a solution, we reserve maximum
+ * grant before trying to dirty a page and unreserve the rest.
+ * See osc_{reserve|unreserve}_grant for details. */
+ long cl_reserved_grant;
+ struct list_head cl_cache_waiters; /* waiting for cache/grant */
+ unsigned long cl_next_shrink_grant; /* jiffies */
+ struct list_head cl_grant_shrink_list; /* Timeout event list */
+ int cl_grant_shrink_interval; /* seconds */
+
+ /* A chunk is an optimal size used by osc_extent to determine
+ * the extent size. A chunk is max(PAGE_CACHE_SIZE, OST block size) */
+ int cl_chunkbits;
+ int cl_chunk;
+ int cl_extent_tax; /* extent overhead, by bytes */
+
+ /* keep track of objects that have lois that contain pages which
+ * have been queued for async brw. this lock also protects the
+ * lists of osc_client_pages that hang off of the loi */
+ /*
+ * ->cl_loi_list_lock protects consistency of
+ * ->cl_loi_{ready,read,write}_list. ->ap_make_ready() and
+ * ->ap_completion() call-backs are executed under this lock. As we
+ * cannot guarantee that these call-backs never block on all platforms
+ * (as a matter of fact they do block on Mac OS X), type of
+ * ->cl_loi_list_lock is platform dependent: it's a spin-lock on Linux
+ * and blocking mutex on Mac OS X. (Alternative is to make this lock
+ * blocking everywhere, but we don't want to slow down fast-path of
+ * our main platform.)
+ *
+ * Exact type of ->cl_loi_list_lock is defined in arch/obd.h together
+ * with client_obd_list_{un,}lock() and
+ * client_obd_list_lock_{init,done}() functions.
+ *
+ * NB by Jinshan: though field names are still _loi_, but actually
+ * osc_object{}s are in the list.
+ */
+ client_obd_lock_t cl_loi_list_lock;
+ struct list_head cl_loi_ready_list;
+ struct list_head cl_loi_hp_ready_list;
+ struct list_head cl_loi_write_list;
+ struct list_head cl_loi_read_list;
+ int cl_r_in_flight;
+ int cl_w_in_flight;
+ /* just a sum of the loi/lop pending numbers to be exported by /proc */
+ atomic_t cl_pending_w_pages;
+ atomic_t cl_pending_r_pages;
+ __u32 cl_max_pages_per_rpc;
+ int cl_max_rpcs_in_flight;
+ struct obd_histogram cl_read_rpc_hist;
+ struct obd_histogram cl_write_rpc_hist;
+ struct obd_histogram cl_read_page_hist;
+ struct obd_histogram cl_write_page_hist;
+ struct obd_histogram cl_read_offset_hist;
+ struct obd_histogram cl_write_offset_hist;
+
+ /* lru for osc caching pages */
+ struct cl_client_cache *cl_cache;
+ struct list_head cl_lru_osc; /* member of cl_cache->ccc_lru */
+ atomic_t *cl_lru_left;
+ atomic_t cl_lru_busy;
+ atomic_t cl_lru_shrinkers;
+ atomic_t cl_lru_in_list;
+ struct list_head cl_lru_list; /* lru page list */
+ client_obd_lock_t cl_lru_list_lock; /* page list protector */
+
+ /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */
+ atomic_t cl_destroy_in_flight;
+ wait_queue_head_t cl_destroy_waitq;
+
+ struct mdc_rpc_lock *cl_rpc_lock;
+ struct mdc_rpc_lock *cl_close_lock;
+
+ /* mgc datastruct */
+ struct mutex cl_mgc_mutex;
+ struct local_oid_storage *cl_mgc_los;
+ struct dt_object *cl_mgc_configs_dir;
+ atomic_t cl_mgc_refcount;
+ struct obd_export *cl_mgc_mgsexp;
+
+ /* checksumming for data sent over the network */
+ unsigned int cl_checksum:1; /* 0 = disabled, 1 = enabled */
+ /* supported checksum types that are worked out at connect time */
+ __u32 cl_supp_cksum_types;
+ /* checksum algorithm to be used */
+ cksum_type_t cl_cksum_type;
+
+ /* also protected by the poorly named _loi_list_lock lock above */
+ struct osc_async_rc cl_ar;
+
+ /* used by quotacheck when the servers are older than 2.4 */
+ int cl_qchk_stat; /* quotacheck stat of the peer */
+#define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */
+#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 7, 50, 0)
+#warning "please consider removing quotacheck compatibility code"
+#endif
+
+ /* sequence manager */
+ struct lu_client_seq *cl_seq;
+
+ atomic_t cl_resends; /* resend count */
+
+ /* ptlrpc work for writeback in ptlrpcd context */
+ void *cl_writeback_work;
+ /* hash tables for osc_quota_info */
+ struct cfs_hash *cl_quota_hash[MAXQUOTAS];
+};
+#define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
+
+struct obd_id_info {
+ __u32 idx;
+ u64 *data;
+};
+
+struct echo_client_obd {
+ struct obd_export *ec_exp; /* the local connection to osc/lov */
+ spinlock_t ec_lock;
+ struct list_head ec_objects;
+ struct list_head ec_locks;
+ int ec_nstripes;
+ __u64 ec_unique;
+};
+
+struct lov_qos_oss {
+ struct obd_uuid lqo_uuid; /* ptlrpc's c_remote_uuid */
+ struct list_head lqo_oss_list; /* link to lov_qos */
+ __u64 lqo_bavail; /* total bytes avail on OSS */
+ __u64 lqo_penalty; /* current penalty */
+ __u64 lqo_penalty_per_obj;/* penalty decrease every obj*/
+ time_t lqo_used; /* last used time, seconds */
+ __u32 lqo_ost_count; /* number of osts on this oss */
+};
+
+struct ltd_qos {
+ struct lov_qos_oss *ltq_oss; /* oss info */
+ __u64 ltq_penalty; /* current penalty */
+ __u64 ltq_penalty_per_obj; /* penalty decrease every obj*/
+ __u64 ltq_weight; /* net weighting */
+ time_t ltq_used; /* last used time, seconds */
+ unsigned int ltq_usable:1; /* usable for striping */
+};
+
+/* Generic subset of OSTs */
+struct ost_pool {
+ __u32 *op_array; /* array of index of
+ lov_obd->lov_tgts */
+ unsigned int op_count; /* number of OSTs in the array */
+ unsigned int op_size; /* allocated size of lp_array */
+ struct rw_semaphore op_rw_sem; /* to protect ost_pool use */
+};
+
+/* Round-robin allocator data */
+struct lov_qos_rr {
+ __u32 lqr_start_idx; /* start index of new inode */
+ __u32 lqr_offset_idx; /* aliasing for start_idx */
+ int lqr_start_count; /* reseed counter */
+ struct ost_pool lqr_pool; /* round-robin optimized list */
+ unsigned long lqr_dirty:1; /* recalc round-robin list */
+};
+
+/* allow statfs data caching for 1 second */
+#define OBD_STATFS_CACHE_SECONDS 1
+
+struct lov_statfs_data {
+ struct obd_info lsd_oi;
+ struct obd_statfs lsd_statfs;
+};
+/* Stripe placement optimization */
+struct lov_qos {
+ struct list_head lq_oss_list; /* list of OSSs that targets use */
+ struct rw_semaphore lq_rw_sem;
+ __u32 lq_active_oss_count;
+ unsigned int lq_prio_free; /* priority for free space */
+ unsigned int lq_threshold_rr;/* priority for rr */
+ struct lov_qos_rr lq_rr; /* round robin qos data */
+ unsigned long lq_dirty:1, /* recalc qos data */
+ lq_same_space:1,/* the ost's all have approx.
+ the same space avail */
+ lq_reset:1, /* zero current penalties */
+ lq_statfs_in_progress:1; /* statfs op in
+ progress */
+ /* qos statfs data */
+ struct lov_statfs_data *lq_statfs_data;
+ wait_queue_head_t lq_statfs_waitq; /* waitqueue to notify statfs
+ * requests completion */
+};
+
+struct lov_tgt_desc {
+ struct list_head ltd_kill;
+ struct obd_uuid ltd_uuid;
+ struct obd_device *ltd_obd;
+ struct obd_export *ltd_exp;
+ struct ltd_qos ltd_qos; /* qos info per target */
+ __u32 ltd_gen;
+ __u32 ltd_index; /* index in lov_obd->tgts */
+ unsigned long ltd_active:1,/* is this target up for requests */
+ ltd_activate:1,/* should target be activated */
+ ltd_reap:1; /* should this target be deleted */
+};
+
+/* Pool metadata */
+#define pool_tgt_size(_p) _p->pool_obds.op_size
+#define pool_tgt_count(_p) _p->pool_obds.op_count
+#define pool_tgt_array(_p) _p->pool_obds.op_array
+#define pool_tgt_rw_sem(_p) _p->pool_obds.op_rw_sem
+
+struct pool_desc {
+ char pool_name[LOV_MAXPOOLNAME + 1]; /* name of pool */
+ struct ost_pool pool_obds; /* pool members */
+ atomic_t pool_refcount; /* pool ref. counter */
+ struct lov_qos_rr pool_rr; /* round robin qos */
+ struct hlist_node pool_hash; /* access by poolname */
+ struct list_head pool_list; /* serial access */
+ struct proc_dir_entry *pool_proc_entry; /* file in /proc */
+ struct obd_device *pool_lobd; /* obd of the lov/lod to which
+ * this pool belongs */
+};
+
+struct lov_obd {
+ struct lov_desc desc;
+ struct lov_tgt_desc **lov_tgts; /* sparse array */
+ struct ost_pool lov_packed; /* all OSTs in a packed
+ array */
+ struct mutex lov_lock;
+ struct obd_connect_data lov_ocd;
+ atomic_t lov_refcount;
+ __u32 lov_tgt_count; /* how many OBD's */
+ __u32 lov_active_tgt_count; /* how many active */
+ __u32 lov_death_row;/* tgts scheduled to be deleted */
+ __u32 lov_tgt_size; /* size of tgts array */
+ int lov_connects;
+ int lov_pool_count;
+ struct cfs_hash *lov_pools_hash_body; /* used for key access */
+ struct list_head lov_pool_list; /* used for sequential access */
+ struct proc_dir_entry *lov_pool_proc_entry;
+ enum lustre_sec_part lov_sp_me;
+
+ /* Cached LRU pages from upper layer */
+ void *lov_cache;
+
+ struct rw_semaphore lov_notify_lock;
+};
+
+struct lmv_tgt_desc {
+ struct obd_uuid ltd_uuid;
+ struct obd_export *ltd_exp;
+ int ltd_idx;
+ struct mutex ltd_fid_mutex;
+ unsigned long ltd_active:1; /* target up for requests */
+};
+
+enum placement_policy {
+ PLACEMENT_CHAR_POLICY = 0,
+ PLACEMENT_NID_POLICY = 1,
+ PLACEMENT_INVAL_POLICY = 2,
+ PLACEMENT_MAX_POLICY
+};
+
+struct lmv_obd {
+ int refcount;
+ struct lu_client_fld lmv_fld;
+ spinlock_t lmv_lock;
+ enum placement_policy lmv_placement;
+ struct lmv_desc desc;
+ struct obd_uuid cluuid;
+ struct obd_export *exp;
+
+ struct mutex init_mutex;
+ int connected;
+ int max_easize;
+ int max_def_easize;
+ int max_cookiesize;
+ int max_def_cookiesize;
+ int server_timeout;
+
+ int tgts_size; /* size of tgts array */
+ struct lmv_tgt_desc **tgts;
+
+ struct obd_connect_data conn_data;
+};
+
+struct niobuf_local {
+ __u64 lnb_file_offset;
+ __u32 lnb_page_offset;
+ __u32 len;
+ __u32 flags;
+ struct page *page;
+ struct dentry *dentry;
+ int lnb_grant_used;
+ int rc;
+};
+
+#define LUSTRE_FLD_NAME "fld"
+#define LUSTRE_SEQ_NAME "seq"
+
+#define LUSTRE_MDD_NAME "mdd"
+#define LUSTRE_OSD_LDISKFS_NAME "osd-ldiskfs"
+#define LUSTRE_OSD_ZFS_NAME "osd-zfs"
+#define LUSTRE_VVP_NAME "vvp"
+#define LUSTRE_LMV_NAME "lmv"
+#define LUSTRE_SLP_NAME "slp"
+#define LUSTRE_LOD_NAME "lod"
+#define LUSTRE_OSP_NAME "osp"
+#define LUSTRE_LWP_NAME "lwp"
+
+/* obd device type names */
+ /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */
+#define LUSTRE_MDS_NAME "mds"
+#define LUSTRE_MDT_NAME "mdt"
+#define LUSTRE_MDC_NAME "mdc"
+#define LUSTRE_OSS_NAME "ost" /* FIXME change name to oss */
+#define LUSTRE_OST_NAME "obdfilter" /* FIXME change name to ost */
+#define LUSTRE_OSC_NAME "osc"
+#define LUSTRE_LOV_NAME "lov"
+#define LUSTRE_MGS_NAME "mgs"
+#define LUSTRE_MGC_NAME "mgc"
+
+#define LUSTRE_ECHO_NAME "obdecho"
+#define LUSTRE_ECHO_CLIENT_NAME "echo_client"
+#define LUSTRE_QMT_NAME "qmt"
+
+/* Constant obd names (post-rename) */
+#define LUSTRE_MDS_OBDNAME "MDS"
+#define LUSTRE_OSS_OBDNAME "OSS"
+#define LUSTRE_MGS_OBDNAME "MGS"
+#define LUSTRE_MGC_OBDNAME "MGC"
+
+/* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
+#define N_LOCAL_TEMP_PAGE 0x10000000
+
+struct obd_trans_info {
+ __u64 oti_transno;
+ __u64 oti_xid;
+ /* Only used on the server side for tracking acks. */
+ struct oti_req_ack_lock {
+ struct lustre_handle lock;
+ __u32 mode;
+ } oti_ack_locks[4];
+ void *oti_handle;
+ struct llog_cookie oti_onecookie;
+ struct llog_cookie *oti_logcookies;
+ int oti_numcookies;
+ /** synchronous write is needed */
+ unsigned long oti_sync_write:1;
+
+ /* initial thread handling transaction */
+ struct ptlrpc_thread *oti_thread;
+ __u32 oti_conn_cnt;
+ /** VBR: versions */
+ __u64 oti_pre_version;
+ /** JobID */
+ char *oti_jobid;
+
+ struct obd_uuid *oti_ost_uuid;
+};
+
+static inline void oti_init(struct obd_trans_info *oti,
+ struct ptlrpc_request *req)
+{
+ if (oti == NULL)
+ return;
+ memset(oti, 0, sizeof(*oti));
+
+ if (req == NULL)
+ return;
+
+ oti->oti_xid = req->rq_xid;
+ /** VBR: take versions from request */
+ if (req->rq_reqmsg != NULL &&
+ lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
+ __u64 *pre_version = lustre_msg_get_versions(req->rq_reqmsg);
+
+ oti->oti_pre_version = pre_version ? pre_version[0] : 0;
+ oti->oti_transno = lustre_msg_get_transno(req->rq_reqmsg);
+ }
+
+ /** called from mds_create_objects */
+ if (req->rq_repmsg != NULL)
+ oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
+ oti->oti_thread = req->rq_svc_thread;
+ if (req->rq_reqmsg != NULL)
+ oti->oti_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
+}
+
+static inline void oti_alloc_cookies(struct obd_trans_info *oti,
+ int num_cookies)
+{
+ if (!oti)
+ return;
+
+ if (num_cookies == 1)
+ oti->oti_logcookies = &oti->oti_onecookie;
+ else
+ OBD_ALLOC_LARGE(oti->oti_logcookies,
+ num_cookies * sizeof(oti->oti_onecookie));
+
+ oti->oti_numcookies = num_cookies;
+}
+
+static inline void oti_free_cookies(struct obd_trans_info *oti)
+{
+ if (!oti || !oti->oti_logcookies)
+ return;
+
+ if (oti->oti_logcookies == &oti->oti_onecookie)
+ LASSERT(oti->oti_numcookies == 1);
+ else
+ OBD_FREE_LARGE(oti->oti_logcookies,
+ oti->oti_numcookies*sizeof(oti->oti_onecookie));
+ oti->oti_logcookies = NULL;
+ oti->oti_numcookies = 0;
+}
+
+/*
+ * Events signalled through obd_notify() upcall-chain.
+ */
+enum obd_notify_event {
+ /* target added */
+ OBD_NOTIFY_CREATE,
+ /* Device connect start */
+ OBD_NOTIFY_CONNECT,
+ /* Device activated */
+ OBD_NOTIFY_ACTIVE,
+ /* Device deactivated */
+ OBD_NOTIFY_INACTIVE,
+ /* Device disconnected */
+ OBD_NOTIFY_DISCON,
+ /* Connect data for import were changed */
+ OBD_NOTIFY_OCD,
+ /* Sync request */
+ OBD_NOTIFY_SYNC_NONBLOCK,
+ OBD_NOTIFY_SYNC,
+ /* Configuration event */
+ OBD_NOTIFY_CONFIG,
+ /* Administratively deactivate/activate event */
+ OBD_NOTIFY_DEACTIVATE,
+ OBD_NOTIFY_ACTIVATE
+};
+
+/*
+ * Data structure used to pass obd_notify()-event to non-obd listeners (llite
+ * and liblustre being main examples).
+ */
+struct obd_notify_upcall {
+ int (*onu_upcall)(struct obd_device *host, struct obd_device *watched,
+ enum obd_notify_event ev, void *owner, void *data);
+ /* Opaque datum supplied by upper layer listener */
+ void *onu_owner;
+};
+
+struct target_recovery_data {
+ svc_handler_t trd_recovery_handler;
+ pid_t trd_processing_task;
+ struct completion trd_starting;
+ struct completion trd_finishing;
+};
+
+struct obd_llog_group {
+ int olg_seq;
+ struct llog_ctxt *olg_ctxts[LLOG_MAX_CTXTS];
+ wait_queue_head_t olg_waitq;
+ spinlock_t olg_lock;
+ struct mutex olg_cat_processing;
+};
+
+/* corresponds to one of the obd's */
+#define OBD_DEVICE_MAGIC 0XAB5CD6EF
+#define OBD_DEV_BY_DEVNAME 0xffffd0de
+
+struct lvfs_run_ctxt {
+ struct dt_device *dt;
+};
+
+struct obd_device {
+ struct obd_type *obd_type;
+ __u32 obd_magic;
+
+ /* common and UUID name of this device */
+ char obd_name[MAX_OBD_NAME];
+ struct obd_uuid obd_uuid;
+
+ struct lu_device *obd_lu_dev;
+
+ int obd_minor;
+ /* bitfield modification is protected by obd_dev_lock */
+ unsigned long obd_attached:1, /* finished attach */
+ obd_set_up:1, /* finished setup */
+ obd_recovering:1, /* there are recoverable clients */
+ obd_abort_recovery:1,/* recovery expired */
+ obd_version_recov:1, /* obd uses version checking */
+ obd_replayable:1, /* recovery is enabled; inform clients */
+ obd_no_transno:1, /* no committed-transno notification */
+ obd_no_recov:1, /* fail instead of retry messages */
+ obd_stopping:1, /* started cleanup */
+ obd_starting:1, /* started setup */
+ obd_force:1, /* cleanup with > 0 obd refcount */
+ obd_fail:1, /* cleanup with failover */
+ obd_async_recov:1, /* allow asynchronous orphan cleanup */
+ obd_no_conn:1, /* deny new connections */
+ obd_inactive:1, /* device active/inactive
+ * (for /proc/status only!!) */
+ obd_no_ir:1, /* no imperative recovery. */
+ obd_process_conf:1; /* device is processing mgs config */
+ /* use separate field as it is set in interrupt to don't mess with
+ * protection of other bits using _bh lock */
+ unsigned long obd_recovery_expired:1;
+ /* uuid-export hash body */
+ struct cfs_hash *obd_uuid_hash;
+ /* nid-export hash body */
+ struct cfs_hash *obd_nid_hash;
+ /* nid stats body */
+ struct cfs_hash *obd_nid_stats_hash;
+ struct list_head obd_nid_stats;
+ atomic_t obd_refcount;
+ wait_queue_head_t obd_refcount_waitq;
+ struct list_head obd_exports;
+ struct list_head obd_unlinked_exports;
+ struct list_head obd_delayed_exports;
+ int obd_num_exports;
+ spinlock_t obd_nid_lock;
+ struct ldlm_namespace *obd_namespace;
+ struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */
+ /* a spinlock is OK for what we do now, may need a semaphore later */
+ spinlock_t obd_dev_lock; /* protect OBD bitfield above */
+ struct mutex obd_dev_mutex;
+ __u64 obd_last_committed;
+ spinlock_t obd_osfs_lock;
+ struct obd_statfs obd_osfs; /* locked by obd_osfs_lock */
+ __u64 obd_osfs_age;
+ struct lvfs_run_ctxt obd_lvfs_ctxt;
+ struct obd_llog_group obd_olg; /* default llog group */
+ struct obd_device *obd_observer;
+ struct rw_semaphore obd_observer_link_sem;
+ struct obd_notify_upcall obd_upcall;
+ struct obd_export *obd_self_export;
+ /* list of exports in LRU order, for ping evictor, with obd_dev_lock */
+ struct list_head obd_exports_timed;
+ time_t obd_eviction_timer; /* for ping evictor */
+
+ int obd_max_recoverable_clients;
+ atomic_t obd_connected_clients;
+ int obd_stale_clients;
+ int obd_delayed_clients;
+ /* this lock protects all recovery list_heads, timer and
+ * obd_next_recovery_transno value */
+ spinlock_t obd_recovery_task_lock;
+ __u64 obd_next_recovery_transno;
+ int obd_replayed_requests;
+ int obd_requests_queued_for_recovery;
+ wait_queue_head_t obd_next_transno_waitq;
+ /* protected by obd_recovery_task_lock */
+ struct timer_list obd_recovery_timer;
+ time_t obd_recovery_start; /* seconds */
+ time_t obd_recovery_end; /* seconds, for lprocfs_status */
+ int obd_recovery_time_hard;
+ int obd_recovery_timeout;
+ int obd_recovery_ir_factor;
+
+ /* new recovery stuff from CMD2 */
+ struct target_recovery_data obd_recovery_data;
+ int obd_replayed_locks;
+ atomic_t obd_req_replay_clients;
+ atomic_t obd_lock_replay_clients;
+ /* all lists are protected by obd_recovery_task_lock */
+ struct list_head obd_req_replay_queue;
+ struct list_head obd_lock_replay_queue;
+ struct list_head obd_final_req_queue;
+ int obd_recovery_stage;
+
+ union {
+ struct client_obd cli;
+ struct echo_client_obd echo_client;
+ struct lov_obd lov;
+ struct lmv_obd lmv;
+ } u;
+ /* Fields used by LProcFS */
+ unsigned int obd_cntr_base;
+ struct lprocfs_stats *obd_stats;
+
+ unsigned int md_cntr_base;
+ struct lprocfs_stats *md_stats;
+
+ struct proc_dir_entry *obd_proc_entry;
+ void *obd_proc_private; /* type private PDEs */
+ struct proc_dir_entry *obd_proc_exports_entry;
+ struct proc_dir_entry *obd_svc_procroot;
+ struct lprocfs_stats *obd_svc_stats;
+ atomic_t obd_evict_inprogress;
+ wait_queue_head_t obd_evict_inprogress_waitq;
+ struct list_head obd_evict_list; /* protected with pet_lock */
+
+ /**
+ * Ldlm pool part. Save last calculated SLV and Limit.
+ */
+ rwlock_t obd_pool_lock;
+ int obd_pool_limit;
+ __u64 obd_pool_slv;
+
+ /**
+ * A list of outstanding class_incref()'s against this obd. For
+ * debugging.
+ */
+ struct lu_ref obd_reference;
+
+ int obd_conn_inprogress;
+};
+
+#define OBD_LLOG_FL_SENDNOW 0x0001
+#define OBD_LLOG_FL_EXIT 0x0002
+
+enum obd_cleanup_stage {
+/* Special case hack for MDS LOVs */
+ OBD_CLEANUP_EARLY,
+/* can be directly mapped to .ldto_device_fini() */
+ OBD_CLEANUP_EXPORTS,
+};
+
+/* get/set_info keys */
+#define KEY_ASYNC "async"
+#define KEY_BLOCKSIZE_BITS "blocksize_bits"
+#define KEY_BLOCKSIZE "blocksize"
+#define KEY_CAPA_KEY "capa_key"
+#define KEY_CHANGELOG_CLEAR "changelog_clear"
+#define KEY_FID2PATH "fid2path"
+#define KEY_CHECKSUM "checksum"
+#define KEY_CLEAR_FS "clear_fs"
+#define KEY_CONN_DATA "conn_data"
+#define KEY_EVICT_BY_NID "evict_by_nid"
+#define KEY_FIEMAP "fiemap"
+#define KEY_FLUSH_CTX "flush_ctx"
+#define KEY_GRANT_SHRINK "grant_shrink"
+#define KEY_HSM_COPYTOOL_SEND "hsm_send"
+#define KEY_INIT_RECOV_BACKUP "init_recov_bk"
+#define KEY_INIT_RECOV "initial_recov"
+#define KEY_INTERMDS "inter_mds"
+#define KEY_LAST_ID "last_id"
+#define KEY_LAST_FID "last_fid"
+#define KEY_LOCK_TO_STRIPE "lock_to_stripe"
+#define KEY_LOVDESC "lovdesc"
+#define KEY_LOV_IDX "lov_idx"
+#define KEY_MAX_EASIZE "max_easize"
+#define KEY_DEFAULT_EASIZE "default_easize"
+#define KEY_MAX_COOKIESIZE "max_cookiesize"
+#define KEY_DEFAULT_COOKIESIZE "default_cookiesize"
+#define KEY_MDS_CONN "mds_conn"
+#define KEY_MGSSEC "mgssec"
+#define KEY_NEXT_ID "next_id"
+#define KEY_READ_ONLY "read-only"
+#define KEY_REGISTER_TARGET "register_target"
+#define KEY_SET_FS "set_fs"
+#define KEY_TGT_COUNT "tgt_count"
+/* KEY_SET_INFO in lustre_idl.h */
+#define KEY_SPTLRPC_CONF "sptlrpc_conf"
+#define KEY_CONNECT_FLAG "connect_flags"
+#define KEY_SYNC_LOCK_CANCEL "sync_lock_cancel"
+
+#define KEY_CACHE_SET "cache_set"
+#define KEY_CACHE_LRU_SHRINK "cache_lru_shrink"
+#define KEY_CHANGELOG_INDEX "changelog_index"
+
+struct lu_context;
+
+/* /!\ must be coherent with include/linux/namei.h on patched kernel */
+#define IT_OPEN (1 << 0)
+#define IT_CREAT (1 << 1)
+#define IT_READDIR (1 << 2)
+#define IT_GETATTR (1 << 3)
+#define IT_LOOKUP (1 << 4)
+#define IT_UNLINK (1 << 5)
+#define IT_TRUNC (1 << 6)
+#define IT_GETXATTR (1 << 7)
+#define IT_EXEC (1 << 8)
+#define IT_PIN (1 << 9)
+#define IT_LAYOUT (1 << 10)
+#define IT_QUOTA_DQACQ (1 << 11)
+#define IT_QUOTA_CONN (1 << 12)
+#define IT_SETXATTR (1 << 13)
+
+static inline int it_to_lock_mode(struct lookup_intent *it)
+{
+ /* CREAT needs to be tested before open (both could be set) */
+ if (it->it_op & IT_CREAT)
+ return LCK_CW;
+ else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP |
+ IT_LAYOUT))
+ return LCK_CR;
+ else if (it->it_op & IT_GETXATTR)
+ return LCK_PR;
+ else if (it->it_op & IT_SETXATTR)
+ return LCK_PW;
+
+ LASSERTF(0, "Invalid it_op: %d\n", it->it_op);
+ return -EINVAL;
+}
+
+struct md_op_data {
+ struct lu_fid op_fid1; /* operation fid1 (usually parent) */
+ struct lu_fid op_fid2; /* operation fid2 (usually child) */
+ struct lu_fid op_fid3; /* 2 extra fids to find conflicting */
+ struct lu_fid op_fid4; /* to the operation locks. */
+ u32 op_mds; /* what mds server open will go to */
+ struct lustre_handle op_handle;
+ s64 op_mod_time;
+ const char *op_name;
+ int op_namelen;
+ __u32 op_mode;
+ struct lmv_stripe_md *op_mea1;
+ struct lmv_stripe_md *op_mea2;
+ __u32 op_suppgids[2];
+ __u32 op_fsuid;
+ __u32 op_fsgid;
+ cfs_cap_t op_cap;
+ void *op_data;
+
+ /* iattr fields and blocks. */
+ struct iattr op_attr;
+ unsigned int op_attr_flags;
+ __u64 op_valid;
+ loff_t op_attr_blocks;
+
+ /* Size-on-MDS epoch and flags. */
+ __u64 op_ioepoch;
+ __u32 op_flags;
+
+ /* Capa fields */
+ struct obd_capa *op_capa1;
+ struct obd_capa *op_capa2;
+
+ /* Various operation flags. */
+ enum mds_op_bias op_bias;
+
+ /* Operation type */
+ __u32 op_opc;
+
+ /* Used by readdir */
+ __u64 op_offset;
+
+ /* Used by readdir */
+ __u32 op_npages;
+
+ /* used to transfer info between the stacks of MD client
+ * see enum op_cli_flags */
+ __u32 op_cli_flags;
+
+ /* File object data version for HSM release, on client */
+ __u64 op_data_version;
+ struct lustre_handle op_lease_handle;
+};
+
+enum op_cli_flags {
+ CLI_SET_MEA = 1 << 0,
+ CLI_RM_ENTRY = 1 << 1,
+};
+
+struct md_enqueue_info;
+/* metadata stat-ahead */
+
+struct md_enqueue_info {
+ struct md_op_data mi_data;
+ struct lookup_intent mi_it;
+ struct lustre_handle mi_lockh;
+ struct inode *mi_dir;
+ int (*mi_cb)(struct ptlrpc_request *req,
+ struct md_enqueue_info *minfo, int rc);
+ __u64 mi_cbdata;
+ unsigned int mi_generation;
+};
+
+struct obd_ops {
+ struct module *o_owner;
+ int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len,
+ void *karg, void *uarg);
+ int (*o_get_info)(const struct lu_env *env, struct obd_export *,
+ __u32 keylen, void *key, __u32 *vallen, void *val,
+ struct lov_stripe_md *lsm);
+ int (*o_set_info_async)(const struct lu_env *, struct obd_export *,
+ __u32 keylen, void *key,
+ __u32 vallen, void *val,
+ struct ptlrpc_request_set *set);
+ int (*o_attach)(struct obd_device *dev, u32 len, void *data);
+ int (*o_detach)(struct obd_device *dev);
+ int (*o_setup)(struct obd_device *dev, struct lustre_cfg *cfg);
+ int (*o_precleanup)(struct obd_device *dev,
+ enum obd_cleanup_stage cleanup_stage);
+ int (*o_cleanup)(struct obd_device *dev);
+ int (*o_process_config)(struct obd_device *dev, u32 len, void *data);
+ int (*o_postrecov)(struct obd_device *dev);
+ int (*o_add_conn)(struct obd_import *imp, struct obd_uuid *uuid,
+ int priority);
+ int (*o_del_conn)(struct obd_import *imp, struct obd_uuid *uuid);
+ /* connect to the target device with given connection
+ * data. @ocd->ocd_connect_flags is modified to reflect flags actually
+ * granted by the target, which are guaranteed to be a subset of flags
+ * asked for. If @ocd == NULL, use default parameters. */
+ int (*o_connect)(const struct lu_env *env,
+ struct obd_export **exp, struct obd_device *src,
+ struct obd_uuid *cluuid, struct obd_connect_data *ocd,
+ void *localdata);
+ int (*o_reconnect)(const struct lu_env *env,
+ struct obd_export *exp, struct obd_device *src,
+ struct obd_uuid *cluuid,
+ struct obd_connect_data *ocd,
+ void *localdata);
+ int (*o_disconnect)(struct obd_export *exp);
+
+ /* Initialize/finalize fids infrastructure. */
+ int (*o_fid_init)(struct obd_device *obd,
+ struct obd_export *exp, enum lu_cli_type type);
+ int (*o_fid_fini)(struct obd_device *obd);
+
+ /* Allocate new fid according to passed @hint. */
+ int (*o_fid_alloc)(struct obd_export *exp, struct lu_fid *fid,
+ struct md_op_data *op_data);
+
+ /*
+ * Object with @fid is getting deleted, we may want to do something
+ * about this.
+ */
+ int (*o_statfs)(const struct lu_env *, struct obd_export *exp,
+ struct obd_statfs *osfs, __u64 max_age, __u32 flags);
+ int (*o_statfs_async)(struct obd_export *exp, struct obd_info *oinfo,
+ __u64 max_age, struct ptlrpc_request_set *set);
+ int (*o_packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt,
+ struct lov_stripe_md *mem_src);
+ int (*o_unpackmd)(struct obd_export *exp,
+ struct lov_stripe_md **mem_tgt,
+ struct lov_mds_md *disk_src, int disk_len);
+ int (*o_preallocate)(struct lustre_handle *, u32 *req, u64 *ids);
+ /* FIXME: add fid capability support for create & destroy! */
+ int (*o_create)(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa, struct lov_stripe_md **ea,
+ struct obd_trans_info *oti);
+ int (*o_destroy)(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa, struct lov_stripe_md *ea,
+ struct obd_trans_info *oti, struct obd_export *md_exp,
+ void *capa);
+ int (*o_setattr)(const struct lu_env *, struct obd_export *exp,
+ struct obd_info *oinfo, struct obd_trans_info *oti);
+ int (*o_setattr_async)(struct obd_export *exp, struct obd_info *oinfo,
+ struct obd_trans_info *oti,
+ struct ptlrpc_request_set *rqset);
+ int (*o_getattr)(const struct lu_env *env, struct obd_export *exp,
+ struct obd_info *oinfo);
+ int (*o_getattr_async)(struct obd_export *exp, struct obd_info *oinfo,
+ struct ptlrpc_request_set *set);
+ int (*o_adjust_kms)(struct obd_export *exp, struct lov_stripe_md *lsm,
+ u64 size, int shrink);
+ int (*o_preprw)(const struct lu_env *env, int cmd,
+ struct obd_export *exp, struct obdo *oa, int objcount,
+ struct obd_ioobj *obj, struct niobuf_remote *remote,
+ int *nr_pages, struct niobuf_local *local,
+ struct obd_trans_info *oti, struct lustre_capa *capa);
+ int (*o_commitrw)(const struct lu_env *env, int cmd,
+ struct obd_export *exp, struct obdo *oa,
+ int objcount, struct obd_ioobj *obj,
+ struct niobuf_remote *remote, int pages,
+ struct niobuf_local *local,
+ struct obd_trans_info *oti, int rc);
+ int (*o_find_cbdata)(struct obd_export *, struct lov_stripe_md *,
+ ldlm_iterator_t it, void *data);
+ int (*o_init_export)(struct obd_export *exp);
+ int (*o_destroy_export)(struct obd_export *exp);
+
+ /* metadata-only methods */
+ int (*o_import_event)(struct obd_device *, struct obd_import *,
+ enum obd_import_event);
+
+ int (*o_notify)(struct obd_device *obd, struct obd_device *watched,
+ enum obd_notify_event ev, void *data);
+
+ int (*o_health_check)(const struct lu_env *env, struct obd_device *);
+ struct obd_uuid *(*o_get_uuid)(struct obd_export *exp);
+
+ /* quota methods */
+ int (*o_quotacheck)(struct obd_device *, struct obd_export *,
+ struct obd_quotactl *);
+ int (*o_quotactl)(struct obd_device *, struct obd_export *,
+ struct obd_quotactl *);
+
+ /* pools methods */
+ int (*o_pool_new)(struct obd_device *obd, char *poolname);
+ int (*o_pool_del)(struct obd_device *obd, char *poolname);
+ int (*o_pool_add)(struct obd_device *obd, char *poolname,
+ char *ostname);
+ int (*o_pool_rem)(struct obd_device *obd, char *poolname,
+ char *ostname);
+ void (*o_getref)(struct obd_device *obd);
+ void (*o_putref)(struct obd_device *obd);
+ /*
+ * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
+ * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
+ * Also, add a wrapper function in include/linux/obd_class.h. */
+};
+
+enum {
+ LUSTRE_OPC_MKDIR = (1 << 0),
+ LUSTRE_OPC_SYMLINK = (1 << 1),
+ LUSTRE_OPC_MKNOD = (1 << 2),
+ LUSTRE_OPC_CREATE = (1 << 3),
+ LUSTRE_OPC_ANY = (1 << 4)
+};
+
+/* lmv structures */
+#define MEA_MAGIC_LAST_CHAR 0xb2221ca1
+#define MEA_MAGIC_ALL_CHARS 0xb222a11c
+#define MEA_MAGIC_HASH_SEGMENT 0xb222a11b
+
+#define MAX_HASH_SIZE_32 0x7fffffffUL
+#define MAX_HASH_SIZE 0x7fffffffffffffffULL
+#define MAX_HASH_HIGHEST_BIT 0x1000000000000000ULL
+
+struct lustre_md {
+ struct mdt_body *body;
+ struct lov_stripe_md *lsm;
+ struct lmv_stripe_md *mea;
+#ifdef CONFIG_FS_POSIX_ACL
+ struct posix_acl *posix_acl;
+#endif
+ struct mdt_remote_perm *remote_perm;
+ struct obd_capa *mds_capa;
+ struct obd_capa *oss_capa;
+};
+
+struct md_open_data {
+ struct obd_client_handle *mod_och;
+ struct ptlrpc_request *mod_open_req;
+ struct ptlrpc_request *mod_close_req;
+ atomic_t mod_refcount;
+ bool mod_is_create;
+};
+
+struct lookup_intent;
+
+struct md_ops {
+ int (*m_getstatus)(struct obd_export *, struct lu_fid *,
+ struct obd_capa **);
+ int (*m_null_inode)(struct obd_export *, const struct lu_fid *);
+ int (*m_find_cbdata)(struct obd_export *, const struct lu_fid *,
+ ldlm_iterator_t, void *);
+ int (*m_close)(struct obd_export *, struct md_op_data *,
+ struct md_open_data *, struct ptlrpc_request **);
+ int (*m_create)(struct obd_export *, struct md_op_data *,
+ const void *, int, int, __u32, __u32, cfs_cap_t,
+ __u64, struct ptlrpc_request **);
+ int (*m_done_writing)(struct obd_export *, struct md_op_data *,
+ struct md_open_data *);
+ int (*m_enqueue)(struct obd_export *, struct ldlm_enqueue_info *,
+ struct lookup_intent *, struct md_op_data *,
+ struct lustre_handle *, void *, int,
+ struct ptlrpc_request **, __u64);
+ int (*m_getattr)(struct obd_export *, struct md_op_data *,
+ struct ptlrpc_request **);
+ int (*m_getattr_name)(struct obd_export *, struct md_op_data *,
+ struct ptlrpc_request **);
+ int (*m_intent_lock)(struct obd_export *, struct md_op_data *,
+ void *, int, struct lookup_intent *, int,
+ struct ptlrpc_request **,
+ ldlm_blocking_callback, __u64);
+ int (*m_link)(struct obd_export *, struct md_op_data *,
+ struct ptlrpc_request **);
+ int (*m_rename)(struct obd_export *, struct md_op_data *,
+ const char *, int, const char *, int,
+ struct ptlrpc_request **);
+ int (*m_is_subdir)(struct obd_export *, const struct lu_fid *,
+ const struct lu_fid *,
+ struct ptlrpc_request **);
+ int (*m_setattr)(struct obd_export *, struct md_op_data *, void *,
+ int , void *, int, struct ptlrpc_request **,
+ struct md_open_data **mod);
+ int (*m_sync)(struct obd_export *, const struct lu_fid *,
+ struct obd_capa *, struct ptlrpc_request **);
+ int (*m_readpage)(struct obd_export *, struct md_op_data *,
+ struct page **, struct ptlrpc_request **);
+
+ int (*m_unlink)(struct obd_export *, struct md_op_data *,
+ struct ptlrpc_request **);
+
+ int (*m_setxattr)(struct obd_export *, const struct lu_fid *,
+ struct obd_capa *, u64, const char *,
+ const char *, int, int, int, __u32,
+ struct ptlrpc_request **);
+
+ int (*m_getxattr)(struct obd_export *, const struct lu_fid *,
+ struct obd_capa *, u64, const char *,
+ const char *, int, int, int,
+ struct ptlrpc_request **);
+
+ int (*m_init_ea_size)(struct obd_export *, int, int, int, int);
+
+ int (*m_get_lustre_md)(struct obd_export *, struct ptlrpc_request *,
+ struct obd_export *, struct obd_export *,
+ struct lustre_md *);
+
+ int (*m_free_lustre_md)(struct obd_export *, struct lustre_md *);
+
+ int (*m_set_open_replay_data)(struct obd_export *,
+ struct obd_client_handle *,
+ struct lookup_intent *);
+ int (*m_clear_open_replay_data)(struct obd_export *,
+ struct obd_client_handle *);
+ int (*m_set_lock_data)(struct obd_export *, __u64 *, void *, __u64 *);
+
+ ldlm_mode_t (*m_lock_match)(struct obd_export *, __u64,
+ const struct lu_fid *, ldlm_type_t,
+ ldlm_policy_data_t *, ldlm_mode_t,
+ struct lustre_handle *);
+
+ int (*m_cancel_unused)(struct obd_export *, const struct lu_fid *,
+ ldlm_policy_data_t *, ldlm_mode_t,
+ ldlm_cancel_flags_t flags, void *opaque);
+ int (*m_renew_capa)(struct obd_export *, struct obd_capa *oc,
+ renew_capa_cb_t cb);
+ int (*m_unpack_capa)(struct obd_export *, struct ptlrpc_request *,
+ const struct req_msg_field *, struct obd_capa **);
+
+ int (*m_get_remote_perm)(struct obd_export *, const struct lu_fid *,
+ struct obd_capa *, __u32,
+ struct ptlrpc_request **);
+
+ int (*m_intent_getattr_async)(struct obd_export *,
+ struct md_enqueue_info *,
+ struct ldlm_enqueue_info *);
+
+ int (*m_revalidate_lock)(struct obd_export *, struct lookup_intent *,
+ struct lu_fid *, __u64 *bits);
+
+ /*
+ * NOTE: If adding ops, add another LPROCFS_MD_OP_INIT() line to
+ * lprocfs_alloc_md_stats() in obdclass/lprocfs_status.c. Also, add a
+ * wrapper function in include/linux/obd_class.h.
+ */
+};
+
+struct lsm_operations {
+ void (*lsm_free)(struct lov_stripe_md *);
+ int (*lsm_destroy)(struct lov_stripe_md *, struct obdo *oa,
+ struct obd_export *md_exp);
+ void (*lsm_stripe_by_index)(struct lov_stripe_md *, int *, u64 *,
+ u64 *);
+ void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, u64 *,
+ u64 *);
+ int (*lsm_lmm_verify)(struct lov_mds_md *lmm, int lmm_bytes,
+ __u16 *stripe_count);
+ int (*lsm_unpackmd)(struct lov_obd *lov, struct lov_stripe_md *lsm,
+ struct lov_mds_md *lmm);
+};
+
+extern const struct lsm_operations lsm_v1_ops;
+extern const struct lsm_operations lsm_v3_ops;
+static inline const struct lsm_operations *lsm_op_find(int magic)
+{
+ switch (magic) {
+ case LOV_MAGIC_V1:
+ return &lsm_v1_ops;
+ case LOV_MAGIC_V3:
+ return &lsm_v3_ops;
+ default:
+ CERROR("Cannot recognize lsm_magic %08x\n", magic);
+ return NULL;
+ }
+}
+
+/* Requests for obd_extent_calc() */
+#define OBD_CALC_STRIPE_START 1
+#define OBD_CALC_STRIPE_END 2
+
+static inline struct lustre_capa *oinfo_capa(struct obd_info *oinfo)
+{
+ return oinfo->oi_capa;
+}
+
+static inline struct md_open_data *obd_mod_alloc(void)
+{
+ struct md_open_data *mod;
+
+ OBD_ALLOC_PTR(mod);
+ if (mod == NULL)
+ return NULL;
+ atomic_set(&mod->mod_refcount, 1);
+ return mod;
+}
+
+#define obd_mod_get(mod) atomic_inc(&(mod)->mod_refcount)
+#define obd_mod_put(mod) \
+({ \
+ if (atomic_dec_and_test(&(mod)->mod_refcount)) { \
+ if ((mod)->mod_open_req) \
+ ptlrpc_req_finished((mod)->mod_open_req); \
+ OBD_FREE_PTR(mod); \
+ } \
+})
+
+void obdo_from_inode(struct obdo *dst, struct inode *src, u32 valid);
+void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent);
+
+/* return 1 if client should be resend request */
+static inline int client_should_resend(int resend, struct client_obd *cli)
+{
+ return atomic_read(&cli->cl_resends) ?
+ atomic_read(&cli->cl_resends) > resend : 1;
+}
+
+/**
+ * Return device name for this device
+ *
+ * XXX: lu_device is declared before obd_device, while a pointer pointing
+ * back to obd_device in lu_device, so this helper function defines here
+ * instead of in lu_object.h
+ */
+static inline const char *lu_dev_name(const struct lu_device *lu_dev)
+{
+ return lu_dev->ld_obd->obd_name;
+}
+
+static inline bool filename_is_volatile(const char *name, int namelen, int *idx)
+{
+ const char *start;
+ char *end;
+
+ if (strncmp(name, LUSTRE_VOLATILE_HDR, LUSTRE_VOLATILE_HDR_LEN) != 0)
+ return false;
+
+ /* caller does not care of idx */
+ if (idx == NULL)
+ return true;
+
+ /* volatile file, the MDT can be set from name */
+ /* name format is LUSTRE_VOLATILE_HDR:[idx]: */
+ /* if no MDT is specified, use std way */
+ if (namelen < LUSTRE_VOLATILE_HDR_LEN + 2)
+ goto bad_format;
+ /* test for no MDT idx case */
+ if ((*(name + LUSTRE_VOLATILE_HDR_LEN) == ':') &&
+ (*(name + LUSTRE_VOLATILE_HDR_LEN + 1) == ':')) {
+ *idx = -1;
+ return true;
+ }
+ /* we have an idx, read it */
+ start = name + LUSTRE_VOLATILE_HDR_LEN + 1;
+ *idx = strtoul(start, &end, 0);
+ /* error cases:
+ * no digit, no trailing :, negative value
+ */
+ if (((*idx == 0) && (end == start)) ||
+ (*end != ':') || (*idx < 0))
+ goto bad_format;
+
+ return true;
+bad_format:
+ /* bad format of mdt idx, we cannot return an error
+ * to caller so we use hash algo */
+ CERROR("Bad volatile file name format: %s\n",
+ name + LUSTRE_VOLATILE_HDR_LEN);
+ return false;
+}
+
+static inline int cli_brw_size(struct obd_device *obd)
+{
+ LASSERT(obd != NULL);
+ return obd->u.cli.cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
+}
+
+#endif /* __OBD_H */
Code Review / kvmfornfv.git / blobdiff