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Land first part of new dcache handling (bug 16654).
[fs/lustre-release.git] / lustre / include / obd.h
index 55f1d26..3848808 100644 (file)
@@ -60,7 +60,8 @@
 #define IOC_MDC_MAX_NR       50
 
 #include <lustre/lustre_idl.h>
-#include <lu_object.h>
+#include <lu_target.h>
+#include <lu_ref.h>
 #include <lustre_lib.h>
 #include <lustre_export.h>
 #include <lustre_quota.h>
@@ -96,8 +97,8 @@ struct lov_oinfo {                 /* per-stripe data structure */
         /* used by the osc to keep track of what objects to build into rpcs */
         struct loi_oap_pages loi_read_lop;
         struct loi_oap_pages loi_write_lop;
-        /* _cli_ is poorly named, it should be _ready_ */
-        struct list_head loi_cli_item;
+        struct list_head loi_ready_item;
+        struct list_head loi_hp_ready_item;
         struct list_head loi_write_item;
         struct list_head loi_read_item;
 
@@ -107,6 +108,12 @@ struct lov_oinfo {                 /* per-stripe data structure */
         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)
 {
         CFS_INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending);
@@ -115,7 +122,8 @@ static inline void loi_init(struct lov_oinfo *loi)
         CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending);
         CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_urgent);
         CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending_group);
-        CFS_INIT_LIST_HEAD(&loi->loi_cli_item);
+        CFS_INIT_LIST_HEAD(&loi->loi_ready_item);
+        CFS_INIT_LIST_HEAD(&loi->loi_hp_ready_item);
         CFS_INIT_LIST_HEAD(&loi->loi_write_item);
         CFS_INIT_LIST_HEAD(&loi->loi_read_item);
 }
@@ -168,7 +176,7 @@ struct lov_stripe_md {
 
 struct obd_info;
 
-typedef int (*obd_enqueue_update_f)(struct obd_info *oinfo, int rc);
+typedef int (*obd_enqueue_update_f)(void *cookie, int rc);
 
 /* obd info for a particular level (lov, osc). */
 struct obd_info {
@@ -232,52 +240,6 @@ struct brw_page {
         obd_flag flag;
 };
 
-enum async_flags {
-        ASYNC_READY = 0x1, /* ap_make_ready will not be called before this
-                              page is added to an rpc */
-        ASYNC_URGENT = 0x2, /* page must be put into an RPC before return */
-        ASYNC_COUNT_STABLE = 0x4, /* ap_refresh_count will not be called
-                                     to give the caller a chance to update
-                                     or cancel the size of the io */
-        ASYNC_GROUP_SYNC = 0x8,  /* ap_completion will not be called, instead
-                                    the page is accounted for in the
-                                    obd_io_group given to
-                                    obd_queue_group_io */
-};
-
-struct obd_async_page_ops {
-        int  (*ap_make_ready)(void *data, int cmd);
-        int  (*ap_refresh_count)(void *data, int cmd);
-        void (*ap_fill_obdo)(void *data, int cmd, struct obdo *oa);
-        void (*ap_update_obdo)(void *data, int cmd, struct obdo *oa,
-                               obd_valid valid);
-        int  (*ap_completion)(void *data, int cmd, struct obdo *oa, int rc);
-        struct obd_capa *(*ap_lookup_capa)(void *data, int cmd);
-};
-
-/* the `oig' is passed down from a caller of obd rw methods.  the callee
- * records enough state such that the caller can sleep on the oig and
- * be woken when all the callees have finished their work */
-struct obd_io_group {
-        spinlock_t      oig_lock;
-        atomic_t        oig_refcount;
-        int             oig_pending;
-        int             oig_rc;
-        struct list_head oig_occ_list;
-        cfs_waitq_t     oig_waitq;
-};
-
-/* the oig callback context lets the callee of obd rw methods register
- * for callbacks from the caller. */
-struct oig_callback_context {
-        struct list_head occ_oig_item;
-        /* called when the caller has received a signal while sleeping.
-         * callees of this method are encouraged to abort their state
-         * in the oig.  This may be called multiple times. */
-        void (*occ_interrupted)(struct oig_callback_context *occ);
-        unsigned long interrupted:1;
-};
-
 /* Individual type definitions */
 
 struct ost_server_data;
@@ -285,15 +247,26 @@ struct ost_server_data;
 /* hold common fields for "target" device */
 struct obd_device_target {
         struct super_block       *obt_sb;
-        atomic_t                  obt_quotachecking;
+        /** last_rcvd file */
+        struct file              *obt_rcvd_filp;
+        /** server data in last_rcvd file */
+        struct lr_server_data    *obt_lsd;
+        /** Lock protecting client bitmap */
+        spinlock_t                obt_client_bitmap_lock;
+        /** Bitmap of known clients */
+        unsigned long            *obt_client_bitmap;
+        /** Server last transaction number */
+        __u64                     obt_last_transno;
+        /** Lock protecting last transaction number */
+        spinlock_t                obt_translock;
+        /** Number of mounts */
+        __u64                     obt_mount_count;
+        struct semaphore          obt_quotachecking;
         struct lustre_quota_ctxt  obt_qctxt;
+        lustre_quota_version_t    obt_qfmt;
+        struct rw_semaphore       obt_rwsem;
 };
 
-typedef void (*obd_pin_extent_cb)(void *data);
-typedef int (*obd_page_removal_cb_t)(void *data, int discard);
-typedef int (*obd_lock_cancel_cb)(struct ldlm_lock *,struct ldlm_lock_desc *,
-                                   void *, int);
-
 /* llog contexts */
 enum llog_ctxt_id {
         LLOG_CONFIG_ORIG_CTXT  =  0,
@@ -308,6 +281,9 @@ enum llog_ctxt_id {
         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_MAX_CTXTS
 };
 
@@ -326,6 +302,7 @@ struct filter_ext {
 struct filter_obd {
         /* NB this field MUST be first */
         struct obd_device_target fo_obt;
+        struct lu_target     fo_lut;
         const char          *fo_fstype;
         struct vfsmount     *fo_vfsmnt;
 
@@ -338,12 +315,7 @@ struct filter_obd {
 
 
         spinlock_t           fo_objidlock;      /* protect fo_lastobjid */
-        spinlock_t           fo_translock;      /* protect fsd_last_transno */
-        struct file         *fo_rcvd_filp;
         struct file         *fo_health_check_filp;
-        struct lr_server_data *fo_fsd;
-        unsigned long       *fo_last_rcvd_slots;
-        __u64                fo_mount_count;
 
         unsigned long        fo_destroys_in_progress;
         struct semaphore     fo_create_locks[FILTER_SUBDIR_COUNT];
@@ -354,10 +326,12 @@ struct filter_obd {
         obd_size             fo_tot_dirty;      /* protected by obd_osfs_lock */
         obd_size             fo_tot_granted;    /* all values in bytes */
         obd_size             fo_tot_pending;
+        int                  fo_tot_granted_clients;
 
         obd_size             fo_readcache_max_filesize;
-        int                  fo_read_cache;
-        int                  fo_writethrough_cache;
+        int                  fo_read_cache:1,   /**< enable read-only cache */
+                             fo_writethrough_cache:1,/**< read cache writes */
+                             fo_mds_ost_sync:1; /**< MDS-OST orphan recovery*/
 
         struct obd_import   *fo_mdc_imp;
         struct obd_uuid      fo_mdc_uuid;
@@ -406,6 +380,22 @@ struct filter_obd {
         struct list_head         fo_capa_keys;
         struct hlist_head       *fo_capa_hash;
         struct llog_commit_master *fo_lcm;
+        int                      fo_sec_level;
+};
+
+#define fo_translock            fo_obt.obt_translock
+#define fo_rcvd_filp            fo_obt.obt_rcvd_filp
+#define fo_fsd                  fo_obt.obt_lsd
+#define fo_last_rcvd_slots      fo_obt.obt_client_bitmap
+#define fo_mount_count          fo_obt.obt_mount_count
+
+struct timeout_item {
+        enum timeout_event ti_event;
+        cfs_time_t         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
@@ -419,7 +409,6 @@ struct filter_obd {
 
 struct mdc_rpc_lock;
 struct obd_import;
-struct lustre_cache;
 struct client_obd {
         struct rw_semaphore      cl_sem;
         struct obd_uuid          cl_target_uuid;
@@ -431,9 +420,9 @@ struct client_obd {
         int                      cl_max_mds_easize;
         int                      cl_max_mds_cookiesize;
 
-        /* security configuration */
-        struct sptlrpc_rule_set  cl_sptlrpc_rset;
-        enum lustre_sec_part     cl_sec_part;
+        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 */
 
         //struct llog_canceld_ctxt *cl_llcd; /* it's included by obd_llog_ctxt */
         void                    *cl_llcd_offset;
@@ -441,9 +430,14 @@ struct client_obd {
         /* 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) */
         struct list_head         cl_cache_waiters; /* waiting for cache/grant */
+        cfs_time_t               cl_next_shrink_grant;   /* jiffies */
+        struct list_head         cl_grant_shrink_list;  /* Timeout event list */
+        struct semaphore         cl_grant_sem;   /*grant shrink list semaphore*/
+        int                      cl_grant_shrink_interval; /* seconds */
 
         /* keep track of objects that have lois that contain pages which
          * have been queued for async brw.  this lock also protects the
@@ -465,6 +459,7 @@ struct client_obd {
          */
         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;
@@ -503,7 +498,7 @@ struct client_obd {
         __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;
 
@@ -514,10 +509,6 @@ struct client_obd {
         struct lu_client_seq    *cl_seq;
 
         atomic_t                 cl_resends; /* resend count */
-
-        /* Cache of triples */
-        struct lustre_cache     *cl_cache;
-        obd_lock_cancel_cb       cl_ext_lock_cancel_cb;
 };
 #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
 
@@ -544,15 +535,10 @@ struct mds_obd {
         cfs_dentry_t                    *mds_fid_de;
         int                              mds_max_mdsize;
         int                              mds_max_cookiesize;
-        struct file                     *mds_rcvd_filp;
-        spinlock_t                       mds_transno_lock;
-        __u64                            mds_last_transno;
-        __u64                            mds_mount_count;
         __u64                            mds_io_epoch;
         unsigned long                    mds_atime_diff;
         struct semaphore                 mds_epoch_sem;
         struct ll_fid                    mds_rootfid;
-        struct lr_server_data           *mds_server_data;
         cfs_dentry_t                    *mds_pending_dir;
         cfs_dentry_t                    *mds_logs_dir;
         cfs_dentry_t                    *mds_objects_dir;
@@ -565,18 +551,17 @@ struct mds_obd {
         __u32                            mds_id;
 
         /* mark pages dirty for write. */
-        bitmap_t                         *mds_lov_page_dirty;
+        bitmap_t                        *mds_lov_page_dirty;
         /* array for store pages with obd_id */
-        void                            **mds_lov_page_array;
+        void                           **mds_lov_page_array;
         /* file for store objid */
         struct file                     *mds_lov_objid_filp;
         __u32                            mds_lov_objid_count;
+        __u32                            mds_lov_objid_max_index;
         __u32                            mds_lov_objid_lastpage;
         __u32                            mds_lov_objid_lastidx;
 
         struct file                     *mds_health_check_filp;
-        unsigned long                   *mds_client_bitmap;
-//        struct upcall_cache             *mds_group_hash;
 
         struct lustre_quota_info         mds_quota_info;
         struct semaphore                 mds_qonoff_sem;
@@ -585,15 +570,25 @@ struct mds_obd {
                                          mds_fl_acl:1,
                                          mds_evict_ost_nids:1,
                                          mds_fl_cfglog:1,
-                                         mds_fl_synced:1;
+                                         mds_fl_synced:1,
+                                         mds_quota:1,
+                                         mds_fl_target:1; /* mds have one or
+                                                           * more targets */
 
         struct upcall_cache             *mds_identity_cache;
 
         /* for capability keys update */
         struct lustre_capa_key          *mds_capa_keys;
-        struct rw_semaphore             mds_notify_lock;
+        struct rw_semaphore              mds_notify_lock;
 };
 
+#define mds_transno_lock         mds_obt.obt_translock
+#define mds_rcvd_filp            mds_obt.obt_rcvd_filp
+#define mds_server_data          mds_obt.obt_lsd
+#define mds_client_bitmap        mds_obt.obt_client_bitmap
+#define mds_mount_count          mds_obt.obt_mount_count
+#define mds_last_transno         mds_obt.obt_last_transno
+
 /* lov objid */
 extern __u32 mds_max_ost_index;
 
@@ -632,6 +627,7 @@ 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;
 };
@@ -639,10 +635,11 @@ struct echo_client_obd {
 struct lov_qos_oss {
         struct obd_uuid     lqo_uuid;       /* ptlrpc's c_remote_uuid */
         struct list_head    lqo_oss_list;   /* link to lov_qos */
-        __u32               lqo_ost_count;  /* number of osts on this oss */
         __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 {
@@ -650,6 +647,7 @@ struct ltd_qos {
         __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 */
 };
 
@@ -659,7 +657,7 @@ struct ost_pool {
                                                 lov_obd->lov_tgts */
         unsigned int        op_count;        /* number of OSTs in the array */
         unsigned int        op_size;         /* allocated size of lp_array */
-        rwlock_t            op_rwlock;       /* to protect lov_pool use */
+        struct rw_semaphore op_rw_sem;       /* to protect ost_pool use */
 };
 
 /* Round-robin allocator data */
@@ -671,21 +669,33 @@ struct lov_qos_rr {
         unsigned long       lqr_dirty:1;     /* recalc round-robin list */
 };
 
+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_reset:1,     /* zero current penalties */
+                            lq_statfs_in_progress:1; /* statfs op in progress */
+        /* qos statfs data */
+        struct lov_statfs_data *lq_statfs_data;
+        cfs_waitq_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;
@@ -699,12 +709,13 @@ struct lov_tgt_desc {
 #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_rwlock(_p) _p->pool_obds.op_rwlock
+#define pool_tgt_rw_sem(_p) _p->pool_obds.op_rw_sem
 #define pool_tgt(_p, _i)    _p->pool_lov->lov_tgts[_p->pool_obds.op_array[_i]]
 
 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 */
@@ -727,13 +738,11 @@ struct lov_obd {
         __u32                   lov_death_row;/* tgts scheduled to be deleted */
         __u32                   lov_tgt_size;   /* size of tgts array */
         int                     lov_connects;
-        obd_page_removal_cb_t   lov_page_removal_cb;
-        obd_pin_extent_cb       lov_page_pin_cb;
-        obd_lock_cancel_cb      lov_lock_cancel_cb;
         int                     lov_pool_count;
         lustre_hash_t          *lov_pools_hash_body; /* used for key access */
         struct list_head        lov_pool_list; /* used for sequential access */
         cfs_proc_dir_entry_t   *lov_pool_proc_entry;
+        enum lustre_sec_part    lov_sp_me;
 };
 
 struct lmv_tgt_desc {
@@ -794,8 +803,10 @@ struct niobuf_local {
 #define LUSTRE_CMM_NAME         "cmm"
 #define LUSTRE_MDD_NAME         "mdd"
 #define LUSTRE_OSD_NAME         "osd"
+#define LUSTRE_VVP_NAME         "vvp"
 #define LUSTRE_LMV_NAME         "lmv"
 #define LUSTRE_CMM_MDC_NAME     "cmm-mdc"
+#define LUSTRE_SLP_NAME         "slp"
 
 /* obd device type names */
  /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */
@@ -836,8 +847,10 @@ struct obd_trans_info {
         int                      oti_numcookies;
 
         /* initial thread handling transaction */
-        int                      oti_thread_id;
+        struct ptlrpc_thread *   oti_thread;
         __u32                    oti_conn_cnt;
+        /** VBR: versions */
+        __u64                    oti_pre_version;
 
         struct obd_uuid         *oti_ost_uuid;
 };
@@ -853,10 +866,18 @@ static inline void oti_init(struct obd_trans_info *oti,
                 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_id = req->rq_svc_thread ? req->rq_svc_thread->t_id : -1;
+        oti->oti_thread = req->rq_svc_thread;
         if (req->rq_reqmsg != NULL)
                 oti->oti_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg);
 }
@@ -893,6 +914,8 @@ static inline void oti_free_cookies(struct obd_trans_info *oti)
  * Events signalled through obd_notify() upcall-chain.
  */
 enum obd_notify_event {
+        /* Device connect start */
+        OBD_NOTIFY_CONNECT,
         /* Device activated */
         OBD_NOTIFY_ACTIVE,
         /* Device deactivated */
@@ -905,13 +928,16 @@ enum obd_notify_event {
         OBD_NOTIFY_SYNC_NONBLOCK,
         OBD_NOTIFY_SYNC,
         /* Configuration event */
-        OBD_NOTIFY_CONFIG
+        OBD_NOTIFY_CONFIG,
+        /* Trigger quota recovery */
+        OBD_NOTIFY_QUOTA
 };
 
 /* bit-mask flags for config events */
 enum config_flags {
-        CONFIG_LOG = 0x1,  /* finished processing config log */
-        CONFIG_SYNC = 0x2  /* mdt synced 1 ost */
+        CONFIG_LOG      = 0x1,  /* finished processing config log */
+        CONFIG_SYNC     = 0x2,  /* mdt synced 1 ost */
+        CONFIG_TARGET   = 0x4   /* one target is added */
 };
 
 /*
@@ -920,7 +946,7 @@ enum config_flags {
  */
 struct obd_notify_upcall {
         int (*onu_upcall)(struct obd_device *host, struct obd_device *watched,
-                          enum obd_notify_event ev, void *owner);
+                          enum obd_notify_event ev, void *owner, void *data);
         /* Opaque datum supplied by upper layer listener */
         void *onu_owner;
 };
@@ -933,11 +959,40 @@ struct target_recovery_data {
 };
 
 enum filter_groups {
+        FILTER_GROUP_MDS0 = 0,
         FILTER_GROUP_LLOG = 1,
-        FILTER_GROUP_ECHO,
-        FILTER_GROUP_MDS0
+        FILTER_GROUP_ECHO = 2 ,
+        FILTER_GROUP_MDS1_N_BASE = 3
 };
 
+static inline __u64 obdo_mdsno(struct obdo *oa)
+{
+        if (oa->o_gr)
+                return oa->o_gr - FILTER_GROUP_MDS1_N_BASE;
+        return 0;
+}
+
+static inline int mdt_to_obd_objgrp(int mdtid)
+{
+        if (mdtid)
+                return FILTER_GROUP_MDS1_N_BASE + mdtid;
+        return 0;
+}
+
+/**
+  * In HEAD for CMD, the object is created in group number which is 3>=
+  * or indexing starts from 3. To test this assertions are added to disallow
+  * group 0. But to run 2.0 mds server on 1.8.x disk format (i.e. interop_mode)
+  * object in group 0 needs to be allowed.
+  * So for interop mode following changes needs to be done:
+  * 1. No need to assert on group 0 or allow group 0
+  * 2. The group number indexing starts from 0 instead of 3
+  */
+
+#define CHECK_MDS_GROUP(group)          (group == FILTER_GROUP_MDS0 || \
+                                         group > FILTER_GROUP_MDS1_N_BASE)
+#define LASSERT_MDS_GROUP(group)        LASSERT(CHECK_MDS_GROUP(group))
+
 struct obd_llog_group {
         struct list_head   olg_list;
         int                olg_group;
@@ -952,6 +1007,7 @@ struct obd_llog_group {
 /* corresponds to one of the obd's */
 #define MAX_OBD_NAME 128
 #define OBD_DEVICE_MAGIC        0XAB5CD6EF
+#define OBD_DEV_BY_DEVNAME      0xffffd0de
 struct obd_device {
         struct obd_type        *obd_type;
         __u32                   obd_magic;
@@ -966,7 +1022,8 @@ struct obd_device {
         unsigned long obd_attached:1,      /* finished attach */
                       obd_set_up:1,        /* finished setup */
                       obd_recovering:1,    /* there are recoverable clients */
-                      obd_abort_recovery:1,/* somebody ioctl'ed us to abort */
+                      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 */
@@ -977,8 +1034,9 @@ struct obd_device {
                       obd_fail:1,          /* cleanup with failover */
                       obd_async_recov:1,   /* allow asyncronous orphan cleanup */
                       obd_no_conn:1,       /* deny new connections */
-                      obd_inactive:1;      /* device active/inactive
+                      obd_inactive:1,      /* device active/inactive
                                            * (for /proc/status only!!) */
+                      obd_process_conf:1;  /* device is processing mgs config */
         /* uuid-export hash body */
         struct lustre_hash     *obd_uuid_hash;
         /* nid-export hash body */
@@ -989,6 +1047,8 @@ struct obd_device {
         atomic_t                obd_refcount;
         cfs_waitq_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;
@@ -1013,23 +1073,23 @@ struct obd_device {
         /* XXX encapsulate all this recovery data into one struct */
         svc_handler_t                    obd_recovery_handler;
         pid_t                            obd_processing_task;
-        
+
         int                              obd_max_recoverable_clients;
         int                              obd_connected_clients;
         int                              obd_recoverable_clients;
+        int                              obd_stale_clients;
+        int                              obd_delayed_clients;
         spinlock_t                       obd_processing_task_lock; /* BH lock (timer) */
         __u64                            obd_next_recovery_transno;
         int                              obd_replayed_requests;
         int                              obd_requests_queued_for_recovery;
         cfs_waitq_t                      obd_next_transno_waitq;
-        struct list_head                 obd_uncommitted_replies;
-        spinlock_t                       obd_uncommitted_replies_lock;
         cfs_timer_t                      obd_recovery_timer;
         time_t                           obd_recovery_start; /* seconds */
         time_t                           obd_recovery_end; /* seconds, for lprocfs_status */
         time_t                           obd_recovery_max_time; /* seconds, bz13079 */
         int                              obd_recovery_timeout;
-        
+
         /* new recovery stuff from CMD2 */
         struct target_recovery_data      obd_recovery_data;
         int                              obd_replayed_locks;
@@ -1066,16 +1126,19 @@ struct obd_device {
         atomic_t               obd_evict_inprogress;
         cfs_waitq_t            obd_evict_inprogress_waitq;
 
-        /** 
-         * Ldlm pool part. Save last calculated SLV and Limit. 
+        /**
+         * Ldlm pool part. Save last calculated SLV and Limit.
          */
         rwlock_t               obd_pool_lock;
         int                    obd_pool_limit;
         __u64                  obd_pool_slv;
-};
 
-#define OBD_OPT_FORCE           0x0001
-#define OBD_OPT_FAILOVER        0x0002
+        /**
+         * A list of outstanding class_incref()'s against this obd. For
+         * debugging.
+         */
+        struct lu_ref          obd_reference;
+};
 
 #define OBD_LLOG_FL_SENDNOW     0x0001
 
@@ -1087,33 +1150,37 @@ enum obd_cleanup_stage {
 };
 
 /* get/set_info keys */
-#define KEY_READ_ONLY           "read-only"
-#define KEY_MDS_CONN            "mds_conn"
-#define KEY_NEXT_ID             "next_id"
-#define KEY_LOVDESC             "lovdesc"
-#define KEY_INIT_RECOV          "initial_recov"
-#define KEY_INIT_RECOV_BACKUP   "init_recov_bk"
-#define KEY_FLUSH_CTX           "flush_ctx"
+#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_MAX_EASIZE          "max_easize"
-#define KEY_REVIMP_UPD          "revimp_update"
-#define KEY_LOV_IDX             "lov_idx"
+#define KEY_EVICT_BY_NID        "evict_by_nid"
+#define KEY_FIEMAP              "fiemap"
+#define KEY_FLUSH_CTX           "flush_ctx"
+#define KEY_INIT_RECOV_BACKUP   "init_recov_bk"
+#define KEY_INIT_RECOV          "initial_recov"
 #define KEY_LAST_ID             "last_id"
-#define KEY_READONLY            "read-only"
 #define KEY_LOCK_TO_STRIPE      "lock_to_stripe"
-#define KEY_CHECKSUM            "checksum"
-#define KEY_UNLINKED            "unlinked"
-#define KEY_EVICT_BY_NID        "evict_by_nid"
+#define KEY_LOVDESC             "lovdesc"
+#define KEY_LOV_IDX             "lov_idx"
+#define KEY_MAX_EASIZE          "max_easize"
+#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_REVIMP_UPD          "revimp_update"
 #define KEY_SET_FS              "set_fs"
-#define KEY_CLEAR_FS            "clear_fs"
-#define KEY_BLOCKSIZE           "blocksize"
-#define KEY_BLOCKSIZE_BITS      "blocksize_bits"
-#define KEY_FIEMAP              "FIEMAP"
+#define KEY_SPTLRPC_CONF        "sptlrpc_conf"
+#define KEY_UNLINKED            "unlinked"
 /* XXX unused ?*/
 #define KEY_INTERMDS            "inter_mds"
 #define KEY_ASYNC               "async"
+#define KEY_GRANT_SHRINK        "grant_shrink"
 
 struct lu_context;
 
@@ -1124,7 +1191,7 @@ static inline int it_to_lock_mode(struct lookup_intent *it)
                 return LCK_CW;
         else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP))
                 return LCK_CR;
+
         LASSERTF(0, "Invalid it_op: %d\n", it->it_op);
         return -EINVAL;
 }
@@ -1214,13 +1281,14 @@ struct obd_ops {
          * 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 lustre_handle *conn, struct obd_device *src,
+                         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);
+                           struct obd_connect_data *ocd,
+                           void *localdata);
         int (*o_disconnect)(struct obd_export *exp);
 
         /* Initialize/finalize fids infrastructure. */
@@ -1231,7 +1299,7 @@ struct obd_ops {
         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.
          */
@@ -1253,9 +1321,12 @@ struct obd_ops {
         int (*o_precreate)(struct obd_export *exp);
         int (*o_create)(struct obd_export *exp,  struct obdo *oa,
                         struct lov_stripe_md **ea, struct obd_trans_info *oti);
+        int (*o_create_async)(struct obd_export *exp,  struct obd_info *oinfo,
+                              struct lov_stripe_md **ea,
+                              struct obd_trans_info *oti);
         int (*o_destroy)(struct obd_export *exp, struct obdo *oa,
                          struct lov_stripe_md *ea, struct obd_trans_info *oti,
-                         struct obd_export *md_exp);
+                         struct obd_export *md_exp, void *capa);
         int (*o_setattr)(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,
@@ -1267,47 +1338,6 @@ struct obd_ops {
         int (*o_brw)(int rw, struct obd_export *exp, struct obd_info *oinfo,
                      obd_count oa_bufs, struct brw_page *pgarr,
                      struct obd_trans_info *oti);
-        int (*o_brw_async)(int rw, struct obd_export *exp,
-                           struct obd_info *oinfo, obd_count oa_bufs,
-                           struct brw_page *pgarr, struct obd_trans_info *oti,
-                           struct ptlrpc_request_set *);
-        int (*o_prep_async_page)(struct obd_export *exp,
-                                 struct lov_stripe_md *lsm,
-                                 struct lov_oinfo *loi,
-                                 cfs_page_t *page, obd_off offset,
-                                 struct obd_async_page_ops *ops, void *data,
-                                 void **res, int nocache,
-                                 struct lustre_handle *lockh);
-        int (*o_reget_short_lock)(struct obd_export *exp,
-                                  struct lov_stripe_md *lsm,
-                                  void **res, int rw,
-                                  obd_off start, obd_off end,
-                                  void **cookie);
-        int (*o_release_short_lock)(struct obd_export *exp,
-                                    struct lov_stripe_md *lsm, obd_off end,
-                                    void *cookie, int rw);
-        int (*o_queue_async_io)(struct obd_export *exp,
-                                struct lov_stripe_md *lsm,
-                                struct lov_oinfo *loi, void *cookie,
-                                int cmd, obd_off off, int count,
-                                obd_flag brw_flags, obd_flag async_flags);
-        int (*o_queue_group_io)(struct obd_export *exp,
-                                struct lov_stripe_md *lsm,
-                                struct lov_oinfo *loi,
-                                struct obd_io_group *oig,
-                                void *cookie, int cmd, obd_off off, int count,
-                                obd_flag brw_flags, obd_flag async_flags);
-        int (*o_trigger_group_io)(struct obd_export *exp,
-                                  struct lov_stripe_md *lsm,
-                                  struct lov_oinfo *loi,
-                                  struct obd_io_group *oig);
-        int (*o_set_async_flags)(struct obd_export *exp,
-                                struct lov_stripe_md *lsm,
-                                struct lov_oinfo *loi, void *cookie,
-                                obd_flag async_flags);
-        int (*o_teardown_async_page)(struct obd_export *exp,
-                                     struct lov_stripe_md *lsm,
-                                     struct lov_oinfo *loi, void *cookie);
         int (*o_merge_lvb)(struct obd_export *exp, struct lov_stripe_md *lsm,
                            struct ost_lvb *lvb, int kms_only);
         int (*o_adjust_kms)(struct obd_export *exp, struct lov_stripe_md *lsm,
@@ -1341,9 +1371,6 @@ struct obd_ops {
         int (*o_enqueue)(struct obd_export *, struct obd_info *oinfo,
                          struct ldlm_enqueue_info *einfo,
                          struct ptlrpc_request_set *rqset);
-        int (*o_match)(struct obd_export *, struct lov_stripe_md *, __u32 type,
-                       ldlm_policy_data_t *, __u32 mode, int *flags, void *data,
-                       struct lustre_handle *lockh);
         int (*o_change_cbdata)(struct obd_export *, struct lov_stripe_md *,
                                ldlm_iterator_t it, void *data);
         int (*o_cancel)(struct obd_export *, struct lov_stripe_md *md,
@@ -1377,20 +1404,17 @@ struct obd_ops {
         struct obd_uuid *(*o_get_uuid) (struct obd_export *exp);
 
         /* quota methods */
-        int (*o_quotacheck)(struct obd_export *, struct obd_quotactl *);
-        int (*o_quotactl)(struct obd_export *, struct obd_quotactl *);
+        int (*o_quotacheck)(struct obd_device *, struct obd_export *,
+                            struct obd_quotactl *);
+        int (*o_quotactl)(struct obd_device *, struct obd_export *,
+                          struct obd_quotactl *);
+        int (*o_quota_adjust_qunit)(struct obd_export *exp,
+                                    struct quota_adjust_qunit *oqaq,
+                                    struct lustre_quota_ctxt *qctxt);
+
 
         int (*o_ping)(struct obd_export *exp);
 
-        int (*o_register_page_removal_cb)(struct obd_export *exp,
-                                          obd_page_removal_cb_t cb,
-                                          obd_pin_extent_cb pin_cb);
-        int (*o_unregister_page_removal_cb)(struct obd_export *exp,
-                                            obd_page_removal_cb_t cb);
-        int (*o_register_lock_cancel_cb)(struct obd_export *exp,
-                                       obd_lock_cancel_cb cb);
-        int (*o_unregister_lock_cancel_cb)(struct obd_export *exp,
-                                         obd_lock_cancel_cb cb);
         /* pools methods */
         int (*o_pool_new)(struct obd_device *obd, char *poolname);
         int (*o_pool_del)(struct obd_device *obd, char *poolname);
@@ -1398,21 +1422,14 @@ struct obd_ops {
                           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. */
 };
 
-/* TODO: lmv_stripe_md should contain mds capabilities for all slave fids */
-struct lmv_stripe_md {
-        __u32         mea_magic;
-        __u32         mea_count;
-        __u32         mea_master;
-        __u32         mea_padding;
-        struct lu_fid mea_ids[0];
-};
-
 enum {
         LUSTRE_OPC_MKDIR    = (1 << 0),
         LUSTRE_OPC_SYMLINK  = (1 << 1),
@@ -1444,7 +1461,8 @@ struct lustre_md {
 
 struct md_open_data {
         struct obd_client_handle *mod_och;
-        struct list_head          mod_replay_list;
+        struct ptlrpc_request    *mod_open_req;
+        struct ptlrpc_request    *mod_close_req;
 };
 
 struct lookup_intent;
@@ -1518,7 +1536,7 @@ struct md_ops {
                                       struct ptlrpc_request *);
         int (*m_clear_open_replay_data)(struct obd_export *,
                                         struct obd_client_handle *);
-        int (*m_set_lock_data)(struct obd_export *, __u64 *, void *);
+        int (*m_set_lock_data)(struct obd_export *, __u64 *, void *, __u32 *);
 
         ldlm_mode_t (*m_lock_match)(struct obd_export *, int,
                                     const struct lu_fid *, ldlm_type_t,
@@ -1530,6 +1548,8 @@ struct md_ops {
                                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,
@@ -1555,9 +1575,9 @@ struct lsm_operations {
         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 *, obd_off *,
-                                     unsigned long *);
+                                    obd_off *);
         void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, obd_off *,
-                                     unsigned long *);
+                                     obd_off *);
         obd_off (*lsm_stripe_offset_by_index)(struct lov_stripe_md *, int);
         obd_off (*lsm_stripe_offset_by_offset)(struct lov_stripe_md *, obd_off);
         int (*lsm_stripe_index_by_offset)(struct lov_stripe_md *, obd_off);
@@ -1568,10 +1588,10 @@ struct lsm_operations {
                              struct lov_mds_md *lmm);
 };
 
-extern struct lsm_operations lsm_v1_ops;
-extern struct lsm_operations lsm_join_ops;
-extern struct lsm_operations lsm_v3_ops;
-static inline struct lsm_operations *lsm_op_find(int magic)
+extern const struct lsm_operations lsm_v1_ops;
+extern const struct lsm_operations lsm_join_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:
@@ -1593,22 +1613,24 @@ int lvfs_check_io_health(struct obd_device *obd, struct file *file);
 #define OBD_CALC_STRIPE_END     2
 
 static inline void obd_transno_commit_cb(struct obd_device *obd, __u64 transno,
-                                         int error)
+                                         struct obd_export *exp, int error)
 {
         if (error) {
                 CERROR("%s: transno "LPU64" commit error: %d\n",
                        obd->obd_name, transno, error);
                 return;
         }
-        if (transno > obd->obd_last_committed) {
-                CDEBUG(D_HA, "%s: transno "LPD64" committed\n",
+        if (exp && transno > exp->exp_last_committed) {
+                CDEBUG(D_HA, "%s: transno "LPU64" committed\n",
                        obd->obd_name, transno);
-                obd->obd_last_committed = transno;
-                ptlrpc_commit_replies (obd);
+                exp->exp_last_committed = transno;
+                ptlrpc_commit_replies(exp);
         } else {
-                CDEBUG(D_INFO, "%s: transno "LPD64" committed\n",
+                CDEBUG(D_INFO, "%s: transno "LPU64" committed\n",
                        obd->obd_name, transno);
         }
+        if (transno > obd->obd_last_committed)
+                obd->obd_last_committed = transno;
 }
 
 static inline void init_obd_quota_ops(quota_interface_t *interface,
@@ -1620,11 +1642,12 @@ static inline void init_obd_quota_ops(quota_interface_t *interface,
         LASSERT(obd_ops);
         obd_ops->o_quotacheck = QUOTA_OP(interface, check);
         obd_ops->o_quotactl = QUOTA_OP(interface, ctl);
+        obd_ops->o_quota_adjust_qunit = QUOTA_OP(interface, adjust_qunit);
 }
 
 static inline __u64 oinfo_mdsno(struct obd_info *oinfo)
 {
-        return oinfo->oi_oa->o_gr - FILTER_GROUP_MDS0;
+        return obdo_mdsno(oinfo->oi_oa);
 }
 
 static inline struct lustre_capa *oinfo_capa(struct obd_info *oinfo)