Whamcloud - gitweb
LU-12616 obclass: fix MDS start/stop race
[fs/lustre-release.git] / lustre / ofd / ofd_obd.c
index ede28dc..478854c 100644 (file)
@@ -23,7 +23,7 @@
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2014 Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
 
 #define DEBUG_SUBSYSTEM S_FILTER
 
-#include <lustre/lustre_idl.h>
 #include "ofd_internal.h"
 #include <obd_cksum.h>
-#include <lustre_ioctl.h>
+#include <uapi/linux/lustre/lustre_ioctl.h>
 #include <lustre_quota.h>
 #include <lustre_lfsck.h>
 #include <lustre_nodemap.h>
@@ -70,55 +69,126 @@ static int ofd_export_stats_init(struct ofd_device *ofd,
 {
        struct obd_device       *obd = ofd_obd(ofd);
        struct nid_stat         *stats;
-       int                      num_stats;
-       int                      rc, newnid = 0;
+       int                      rc;
 
        ENTRY;
 
-       LASSERT(obd->obd_uses_nid_stats);
-
        if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
                /* Self-export gets no proc entry */
                RETURN(0);
 
-       rc = lprocfs_exp_setup(exp, client_nid, &newnid);
-       if (rc) {
-               /* Mask error for already created
-                * /proc entries */
-               if (rc == -EALREADY)
-                       rc = 0;
-               RETURN(rc);
-       }
-
-       if (newnid == 0)
-               RETURN(0);
+       rc = lprocfs_exp_setup(exp, client_nid);
+       if (rc != 0)
+               /* Mask error for already created /proc entries */
+               RETURN(rc == -EALREADY ? 0 : rc);
 
        stats = exp->exp_nid_stats;
-       LASSERT(stats != NULL);
-
-       num_stats = NUM_OBD_STATS + LPROC_OFD_STATS_LAST;
-
-       stats->nid_stats = lprocfs_alloc_stats(num_stats,
+       stats->nid_stats = lprocfs_alloc_stats(LPROC_OFD_STATS_LAST,
                                               LPROCFS_STATS_FLAG_NOPERCPU);
-       if (stats->nid_stats == NULL)
-               return -ENOMEM;
+       if (!stats->nid_stats)
+               RETURN(-ENOMEM);
 
-       lprocfs_init_ops_stats(LPROC_OFD_STATS_LAST, stats->nid_stats);
        ofd_stats_counter_init(stats->nid_stats);
-       rc = lprocfs_register_stats(stats->nid_proc, "stats",
-                                   stats->nid_stats);
-       if (rc)
-               GOTO(clean, rc);
 
-       rc = lprocfs_nid_ldlm_stats_init(stats);
-       if (rc) {
+       rc = lprocfs_register_stats(stats->nid_proc, "stats", stats->nid_stats);
+       if (rc != 0) {
                lprocfs_free_stats(&stats->nid_stats);
-               GOTO(clean, rc);
+               GOTO(out, rc);
        }
 
-       RETURN(0);
-clean:
-       return rc;
+       rc = lprocfs_nid_ldlm_stats_init(stats);
+       if (rc != 0)
+               GOTO(out, rc);
+
+out:
+       RETURN(rc);
+}
+
+/**
+ * Decide which checksums both client and OST support, possibly forcing
+ * the use of T10PI checksums if the hardware supports this.
+ *
+ * The clients that have no T10-PI RPC checksum support will use the same
+ * mechanism to select checksum type as before, and will not be affected by
+ * the following logic.
+ *
+ * For the clients that have T10-PI RPC checksum support:
+ *
+ * If the OST supports T10-PI feature and T10-PI checksum is enforced, clients
+ * will have no other choice for RPC checksum type other than using the T10PI
+ * checksum type. This is useful for enforcing end-to-end integrity in the
+ * whole system.
+ *
+ * If the OST doesn't support T10-PI feature and T10-PI checksum is enforced,
+ * together with other checksum with reasonably good speeds (e.g. crc32,
+ * crc32c, adler, etc.), all T10-PI checksum types understood by the client
+ * (t10ip512, t10ip4K, t10crc512, t10crc4K) will be added to the available
+ * checksum types, regardless of the speeds of T10-PI checksums. This is
+ * useful for testing T10-PI checksum of RPC.
+ *
+ * If the OST supports T10-PI feature and T10-PI checksum is NOT enforced,
+ * the corresponding T10-PI checksum type will be added to the checksum type
+ * list, regardless of the speed of the T10-PI checksum. This provides clients
+ * the flexibility to choose whether to enable end-to-end integrity or not.
+ *
+ * If the OST does NOT supports T10-PI feature and T10-PI checksum is NOT
+ * enforced, together with other checksums with reasonably good speeds,
+ * all the T10-PI checksum types with good speeds will be added into the
+ * checksum type list. Note that a T10-PI checksum type with a speed worse
+ * than half of Alder will NOT be added as a option. In this circumstance,
+ * T10-PI checksum types has the same behavior like other normal checksum
+ * types.
+ *
+ */
+static void
+ofd_mask_cksum_types(struct ofd_device *ofd, enum cksum_types *cksum_types)
+{
+       bool enforce = ofd->ofd_checksum_t10pi_enforce;
+       enum cksum_types ofd_t10_cksum_type;
+       enum cksum_types client_t10_types = *cksum_types & OBD_CKSUM_T10_ALL;
+       enum cksum_types server_t10_types;
+
+       /*
+        * The client set in ocd_cksum_types the checksum types it
+        * supports. We have to mask off the algorithms that we don't
+        * support. T10PI checksum types will be added later.
+        */
+       *cksum_types &= (ofd->ofd_cksum_types_supported & ~OBD_CKSUM_T10_ALL);
+       server_t10_types = ofd->ofd_cksum_types_supported & OBD_CKSUM_T10_ALL;
+       ofd_t10_cksum_type = ofd->ofd_lut.lut_dt_conf.ddp_t10_cksum_type;
+
+       /* Quick exit if no T10-PI support on client */
+       if (!client_t10_types)
+               return;
+
+       /*
+        * This OST has NO T10-PI feature. Add all supported T10-PI checksums
+        * as options if T10-PI checksum is enforced. If the T10-PI checksum is
+        * not enforced, only add them as options when speed is good.
+        */
+       if (ofd_t10_cksum_type == 0) {
+               /*
+                * Server allows all T10PI checksums, and server_t10_types
+                * include quick ones.
+                */
+               if (enforce)
+                       *cksum_types |= client_t10_types;
+               else
+                       *cksum_types |= client_t10_types & server_t10_types;
+               return;
+       }
+
+       /*
+        * This OST has T10-PI feature. Disable all other checksum types if
+        * T10-PI checksum is enforced. If the T10-PI checksum is not enforced,
+        * add the checksum type as an option.
+        */
+       if (client_t10_types & ofd_t10_cksum_type) {
+               if (enforce)
+                       *cksum_types = ofd_t10_cksum_type;
+               else
+                       *cksum_types |= ofd_t10_cksum_type;
+       }
 }
 
 /**
@@ -134,6 +204,10 @@ clean:
  * connect flags from the obd_connect_data::ocd_connect_flags field of the
  * reply. \see tgt_connect().
  *
+ * Before 2.7.50 clients will send a struct obd_connect_data_v1 rather than a
+ * full struct obd_connect_data. So care must be taken when accessing fields
+ * that are not present in struct obd_connect_data_v1. See LU-16.
+ *
  * \param[in] env              execution environment
  * \param[in] exp              the obd_export associated with this
  *                             client/target pair
@@ -151,24 +225,20 @@ static int ofd_parse_connect_data(const struct lu_env *env,
                                  struct obd_connect_data *data,
                                  bool new_connection)
 {
-       struct ofd_device                *ofd = ofd_exp(exp);
-       struct filter_export_data        *fed = &exp->exp_filter_data;
+       struct ofd_device *ofd = ofd_exp(exp);
+       struct filter_export_data *fed = &exp->exp_filter_data;
 
        if (!data)
                RETURN(0);
 
-       CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
-              " ocd_version: %x ocd_grant: %d ocd_index: %u"
-              " ocd_group %u\n",
+       CDEBUG(D_RPCTRACE,
+              "%s: cli %s/%p ocd_connect_flags: %#llx ocd_version: %x ocd_grant: %d ocd_index: %u ocd_group %u\n",
               exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
               data->ocd_connect_flags, data->ocd_version,
               data->ocd_grant, data->ocd_index, data->ocd_group);
 
        if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
-               CWARN("!!! This export (nid %s) used object group %d "
-                     "earlier; now it's trying to use group %d!  This could "
-                     "be a bug in the MDS. Please report to "
-                     "https://jira.hpdd.intel.com/\n",
+               CWARN("!!! This export (nid %s) used object group %d earlier; now it's trying to use group %d!  This could be a bug in the MDS. Please report to https://jira.whamcloud.com/\n",
                      obd_export_nid2str(exp), fed->fed_group,
                      data->ocd_group);
                RETURN(-EPROTO);
@@ -176,7 +246,9 @@ static int ofd_parse_connect_data(const struct lu_env *env,
        fed->fed_group = data->ocd_group;
 
        data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
-       data->ocd_version = LUSTRE_VERSION_CODE;
+
+       if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
+               data->ocd_connect_flags2 &= OST_CONNECT_SUPPORTED2;
 
        /* Kindly make sure the SKIP_ORPHAN flag is from MDS. */
        if (data->ocd_connect_flags & OBD_CONNECT_MDS)
@@ -185,28 +257,54 @@ static int ofd_parse_connect_data(const struct lu_env *env,
        else if (data->ocd_connect_flags & OBD_CONNECT_SKIP_ORPHAN)
                RETURN(-EPROTO);
 
-       if (ofd_grant_param_supp(exp)) {
-               exp->exp_filter_data.fed_pagesize = data->ocd_blocksize;
-               /* ocd_{blocksize,inodespace} are log2 values */
-               data->ocd_blocksize  = ofd->ofd_blockbits;
-               data->ocd_inodespace = ofd->ofd_dt_conf.ddp_inodespace;
-               /* ocd_grant_extent is in 1K blocks */
-               data->ocd_grant_extent = ofd->ofd_dt_conf.ddp_grant_frag >> 10;
+       /* Determine optimal brw size before calculating grant */
+       if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
+               data->ocd_brw_size = 65536;
+       } else if (OCD_HAS_FLAG(data, BRW_SIZE)) {
+               if (data->ocd_brw_size > ofd->ofd_brw_size)
+                       data->ocd_brw_size = ofd->ofd_brw_size;
+               if (data->ocd_brw_size == 0) {
+                       CERROR("%s: cli %s/%p ocd_connect_flags: %#llx ocd_version: %x ocd_grant: %d ocd_index: %u ocd_brw_size is unexpectedly zero, network data corruption? Refusing connection of this client\n",
+                              exp->exp_obd->obd_name,
+                              exp->exp_client_uuid.uuid,
+                              exp, data->ocd_connect_flags, data->ocd_version,
+                              data->ocd_grant, data->ocd_index);
+                       RETURN(-EPROTO);
+               }
+       }
+
+       if (OCD_HAS_FLAG(data, GRANT_PARAM)) {
+               struct dt_device_param *ddp = &ofd->ofd_lut.lut_dt_conf;
+
+               /* client is reporting its page size, for future use */
+               exp->exp_target_data.ted_pagebits = data->ocd_grant_blkbits;
+               data->ocd_grant_blkbits  = ofd->ofd_lut.lut_tgd.tgd_blockbits;
+               /*
+                * ddp_inodespace may not be power-of-two value, eg. for ldiskfs
+                * it's LDISKFS_DIR_REC_LEN(20) = 28.
+                */
+               data->ocd_grant_inobits = fls(ddp->ddp_inodespace - 1);
+               /* ocd_grant_tax_kb is in 1K byte blocks */
+               data->ocd_grant_tax_kb = ddp->ddp_extent_tax >> 10;
+               data->ocd_grant_max_blks = ddp->ddp_max_extent_blks;
        }
 
-       if (data->ocd_connect_flags & OBD_CONNECT_GRANT)
-               data->ocd_grant = ofd_grant_connect(env, exp, data->ocd_grant,
-                                                   new_connection);
+       /*
+        * Save connect_data we have so far because tgt_grant_connect()
+        * uses it to calculate grant, and we want to save the client
+        * version before it is overwritten by LUSTRE_VERSION_CODE.
+        */
+       exp->exp_connect_data = *data;
+       if (OCD_HAS_FLAG(data, GRANT))
+               tgt_grant_connect(env, exp, data, new_connection);
 
        if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
                struct lr_server_data *lsd = &ofd->ofd_lut.lut_lsd;
                int                    index = lsd->lsd_osd_index;
 
                if (index != data->ocd_index) {
-                       LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
-                                          " %u doesn't match actual OST index"
-                                          " %u in last_rcvd file, bad "
-                                          "configuration?\n",
+                       LCONSOLE_ERROR_MSG(0x136,
+                                          "Connection from %s to index %u doesn't match actual OST index %u in last_rcvd file, bad configuration?\n",
                                           obd_export_nid2str(exp), index,
                                           data->ocd_index);
                        RETURN(-EBADF);
@@ -214,58 +312,43 @@ static int ofd_parse_connect_data(const struct lu_env *env,
                if (!(lsd->lsd_feature_compat & OBD_COMPAT_OST)) {
                        /* this will only happen on the first connect */
                        lsd->lsd_feature_compat |= OBD_COMPAT_OST;
-                       /* sync is not needed here as lut_client_add will
-                        * set exp_need_sync flag */
+                       /*
+                        * sync is not needed here as tgt_client_new will
+                        * set exp_need_sync flag
+                        */
                        tgt_server_data_update(env, &ofd->ofd_lut, 0);
                }
        }
-       if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
-               data->ocd_brw_size = 65536;
-       } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
-               data->ocd_brw_size = min(data->ocd_brw_size,
-                                        (__u32)DT_MAX_BRW_SIZE);
-               if (data->ocd_brw_size == 0) {
-                       CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
-                              " ocd_version: %x ocd_grant: %d ocd_index: %u "
-                              "ocd_brw_size is unexpectedly zero, "
-                              "network data corruption?"
-                              "Refusing connection of this client\n",
-                              exp->exp_obd->obd_name,
-                              exp->exp_client_uuid.uuid,
-                              exp, data->ocd_connect_flags, data->ocd_version,
-                              data->ocd_grant, data->ocd_index);
-                       RETURN(-EPROTO);
-               }
-       }
 
        if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
                __u32 cksum_types = data->ocd_cksum_types;
 
-               /* The client set in ocd_cksum_types the checksum types it
-                * supports. We have to mask off the algorithms that we don't
-                * support */
-               data->ocd_cksum_types &= cksum_types_supported_server();
+               ofd_mask_cksum_types(ofd, &data->ocd_cksum_types);
 
                if (unlikely(data->ocd_cksum_types == 0)) {
-                       CERROR("%s: Connect with checksum support but no "
-                              "ocd_cksum_types is set\n",
+                       CERROR("%s: Connect with checksum support but no ocd_cksum_types is set\n",
                               exp->exp_obd->obd_name);
                        RETURN(-EPROTO);
                }
 
-               CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
-                      "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
+               CDEBUG(D_RPCTRACE,
+                      "%s: cli %s supports cksum type %x, return %x\n",
+                      exp->exp_obd->obd_name, obd_export_nid2str(exp),
                       cksum_types, data->ocd_cksum_types);
        } else {
-               /* This client does not support OBD_CONNECT_CKSUM
-                * fall back to CRC32 */
-               CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
-                      "OBD_CONNECT_CKSUM, CRC32 will be used\n",
+               /*
+                * This client does not support OBD_CONNECT_CKSUM.
+                * Report failure to negotiate checksum at connect
+                */
+               CDEBUG(D_RPCTRACE,
+                      "%s: cli %s does not support OBD_CONNECT_CKSUM\n",
                       exp->exp_obd->obd_name, obd_export_nid2str(exp));
        }
 
        if (data->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
-               data->ocd_maxbytes = ofd->ofd_dt_conf.ddp_maxbytes;
+               data->ocd_maxbytes = ofd->ofd_lut.lut_dt_conf.ddp_maxbytes;
+
+       data->ocd_version = LUSTRE_VERSION_CODE;
 
        if (OCD_HAS_FLAG(data, PINGLESS)) {
                if (ptlrpc_pinger_suppress_pings()) {
@@ -301,21 +384,25 @@ static int ofd_obd_reconnect(const struct lu_env *env, struct obd_export *exp,
                             struct obd_connect_data *data,
                             void *client_nid)
 {
-       struct ofd_device       *ofd;
-       int                      rc;
+       struct ofd_device *ofd;
+       int rc;
 
        ENTRY;
 
-       if (exp == NULL || obd == NULL || cluuid == NULL)
+       if (!exp || !obd || !cluuid)
                RETURN(-EINVAL);
 
+       rc = nodemap_add_member(*(lnet_nid_t *)client_nid, exp);
+       if (rc != 0 && rc != -EEXIST)
+               RETURN(rc);
+
        ofd = ofd_dev(obd->obd_lu_dev);
 
        rc = ofd_parse_connect_data(env, exp, data, false);
        if (rc == 0)
                ofd_export_stats_init(ofd, exp, client_nid);
-
-       nodemap_add_member(*(lnet_nid_t *)client_nid, exp);
+       else
+               nodemap_del_member(exp);
 
        RETURN(rc);
 }
@@ -341,14 +428,14 @@ static int ofd_obd_connect(const struct lu_env *env, struct obd_export **_exp,
                           struct obd_device *obd, struct obd_uuid *cluuid,
                           struct obd_connect_data *data, void *localdata)
 {
-       struct obd_export       *exp;
-       struct ofd_device       *ofd;
-       struct lustre_handle     conn = { 0 };
-       int                      rc;
-       lnet_nid_t              *client_nid;
+       struct obd_export *exp;
+       struct ofd_device *ofd;
+       struct lustre_handle conn = { 0 };
+       int rc;
+
        ENTRY;
 
-       if (_exp == NULL || obd == NULL || cluuid == NULL)
+       if (!_exp || !obd || !cluuid)
                RETURN(-EINVAL);
 
        ofd = ofd_dev(obd->obd_lu_dev);
@@ -360,15 +447,20 @@ static int ofd_obd_connect(const struct lu_env *env, struct obd_export **_exp,
        exp = class_conn2export(&conn);
        LASSERT(exp != NULL);
 
+       if (localdata) {
+               rc = nodemap_add_member(*(lnet_nid_t *)localdata, exp);
+               if (rc != 0 && rc != -EEXIST)
+                       GOTO(out, rc);
+       } else {
+               CDEBUG(D_HA,
+                      "%s: cannot find nodemap for client %s: nid is null\n",
+                      obd->obd_name, cluuid->uuid);
+       }
+
        rc = ofd_parse_connect_data(env, exp, data, true);
        if (rc)
                GOTO(out, rc);
 
-       if (localdata != NULL) {
-               client_nid = localdata;
-               nodemap_add_member(*client_nid, exp);
-       }
-
        if (obd->obd_replayable) {
                struct tg_export_data *ted = &exp->exp_target_data;
 
@@ -385,8 +477,8 @@ static int ofd_obd_connect(const struct lu_env *env, struct obd_export **_exp,
 
 out:
        if (rc != 0) {
-               nodemap_del_member(exp);
                class_disconnect(exp);
+               nodemap_del_member(exp);
                *_exp = NULL;
        } else {
                *_exp = exp;
@@ -407,9 +499,9 @@ out:
  */
 int ofd_obd_disconnect(struct obd_export *exp)
 {
-       struct ofd_device       *ofd = ofd_exp(exp);
-       struct lu_env            env;
-       int                      rc;
+       struct ofd_device *ofd = ofd_exp(exp);
+       struct lu_env env;
+       int rc;
 
        ENTRY;
 
@@ -417,12 +509,11 @@ int ofd_obd_disconnect(struct obd_export *exp)
        class_export_get(exp);
 
        if (!(exp->exp_flags & OBD_OPT_FORCE))
-               ofd_grant_sanity_check(ofd_obd(ofd), __FUNCTION__);
+               tgt_grant_sanity_check(ofd_obd(ofd), __func__);
 
-       nodemap_del_member(exp);
        rc = server_disconnect_export(exp);
 
-       ofd_grant_discard(exp);
+       tgt_grant_discard(exp);
 
        /* Do not erase record for recoverable client. */
        if (exp->exp_obd->obd_replayable &&
@@ -435,6 +526,7 @@ int ofd_obd_disconnect(struct obd_export *exp)
                lu_env_fini(&env);
        }
 out:
+       nodemap_del_member(exp);
        class_export_put(exp);
        RETURN(rc);
 }
@@ -454,8 +546,6 @@ static int ofd_init_export(struct obd_export *exp)
 {
        int rc;
 
-       spin_lock_init(&exp->exp_filter_data.fed_lock);
-       INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
        atomic_set(&exp->exp_filter_data.fed_soft_sync_count, 0);
        spin_lock(&exp->exp_lock);
        exp->exp_connecting = 1;
@@ -490,10 +580,10 @@ static int ofd_destroy_export(struct obd_export *exp)
 {
        struct ofd_device *ofd = ofd_exp(exp);
 
-       if (exp->exp_filter_data.fed_pending)
-               CERROR("%s: cli %s/%p has %lu pending on destroyed export"
-                      "\n", exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
-                      exp, exp->exp_filter_data.fed_pending);
+       if (exp->exp_target_data.ted_pending)
+               CERROR("%s: cli %s/%p has %lu pending on destroyed export\n",
+                      exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
+                      exp, exp->exp_target_data.ted_pending);
 
        target_destroy_export(exp);
 
@@ -504,24 +594,18 @@ static int ofd_destroy_export(struct obd_export *exp)
        ldlm_destroy_export(exp);
        tgt_client_free(exp);
 
-       ofd_fmd_cleanup(exp);
-
        /*
         * discard grants once we're sure no more
         * interaction with the client is possible
         */
-       ofd_grant_discard(exp);
-       ofd_fmd_cleanup(exp);
+       tgt_grant_discard(exp);
 
-       if (exp_connect_flags(exp) & OBD_CONNECT_GRANT_SHRINK) {
-               if (ofd->ofd_tot_granted_clients > 0)
-                       ofd->ofd_tot_granted_clients --;
-       }
+       if (exp_connect_flags(exp) & OBD_CONNECT_GRANT)
+               ofd->ofd_lut.lut_tgd.tgd_tot_granted_clients--;
 
        if (!(exp->exp_flags & OBD_OPT_FORCE))
-               ofd_grant_sanity_check(exp->exp_obd, __FUNCTION__);
+               tgt_grant_sanity_check(exp->exp_obd, __func__);
 
-       LASSERT(list_empty(&exp->exp_filter_data.fed_mod_list));
        return 0;
 }
 
@@ -540,17 +624,20 @@ static int ofd_destroy_export(struct obd_export *exp)
 int ofd_postrecov(const struct lu_env *env, struct ofd_device *ofd)
 {
        struct lu_device *ldev = &ofd->ofd_dt_dev.dd_lu_dev;
-       struct lfsck_start_param lsp;
        int rc;
 
        CDEBUG(D_HA, "%s: recovery is over\n", ofd_name(ofd));
 
-       lsp.lsp_start = NULL;
-       lsp.lsp_index_valid = 0;
-       rc = lfsck_start(env, ofd->ofd_osd, &lsp);
-       if (rc != 0 && rc != -EALREADY)
-               CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
-                     ofd_name(ofd), rc);
+       if (!ofd->ofd_skip_lfsck && !ofd->ofd_osd->dd_rdonly) {
+               struct lfsck_start_param lsp;
+
+               lsp.lsp_start = NULL;
+               lsp.lsp_index_valid = 0;
+               rc = lfsck_start(env, ofd->ofd_osd, &lsp);
+               if (rc != 0 && rc != -EALREADY)
+                       CWARN("%s: auto trigger paused LFSCK failed: rc = %d\n",
+                             ofd_name(ofd), rc);
+       }
 
        return ldev->ld_ops->ldo_recovery_complete(env, ldev);
 }
@@ -568,9 +655,9 @@ int ofd_postrecov(const struct lu_env *env, struct ofd_device *ofd)
  */
 static int ofd_obd_postrecov(struct obd_device *obd)
 {
-       struct lu_env            env;
-       struct lu_device        *ldev = obd->obd_lu_dev;
-       int                      rc;
+       struct lu_env env;
+       struct lu_device *ldev = obd->obd_lu_dev;
+       int rc;
 
        ENTRY;
 
@@ -611,16 +698,16 @@ static int ofd_set_info_async(const struct lu_env *env, struct obd_export *exp,
 
        ENTRY;
 
-       if (exp->exp_obd == NULL) {
+       if (!exp->exp_obd) {
                CDEBUG(D_IOCTL, "invalid export %p\n", exp);
                RETURN(-EINVAL);
        }
 
        if (KEY_IS(KEY_SPTLRPC_CONF)) {
-               rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
+               rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp));
        } else {
                CERROR("%s: Unsupported key %s\n",
-                      exp->exp_obd->obd_name, (char*)key);
+                      exp->exp_obd->obd_name, (char *)key);
                rc = -EOPNOTSUPP;
        }
        RETURN(rc);
@@ -640,24 +727,22 @@ static int ofd_set_info_async(const struct lu_env *env, struct obd_export *exp,
  * \param[in]  key     key name
  * \param[out] vallen  length of key value
  * \param[out] val     the key value to return
- * \param[in]  lsm     not used in OFD
  *
  * \retval             0 if successful
  * \retval             negative value on error
  */
 static int ofd_get_info(const struct lu_env *env, struct obd_export *exp,
-                       __u32 keylen, void *key, __u32 *vallen, void *val,
-                       struct lov_stripe_md *lsm)
+                       __u32 keylen, void *key, __u32 *vallen, void *val)
 {
-       struct ofd_thread_info          *info;
-       struct ofd_device               *ofd;
-       struct ll_fiemap_info_key       *fm_key = key;
-       struct ll_user_fiemap           *fiemap = val;
-       int                              rc = 0;
+       struct ofd_thread_info *info;
+       struct ofd_device *ofd;
+       struct ll_fiemap_info_key *fm_key = key;
+       struct fiemap *fiemap = val;
+       int rc = 0;
 
        ENTRY;
 
-       if (exp->exp_obd == NULL) {
+       if (!exp->exp_obd) {
                CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
                RETURN(-EINVAL);
        }
@@ -667,14 +752,15 @@ static int ofd_get_info(const struct lu_env *env, struct obd_export *exp,
        if (KEY_IS(KEY_FIEMAP)) {
                info = ofd_info_init(env, exp);
 
-               rc = ostid_to_fid(&info->fti_fid, &fm_key->oa.o_oi,
+               rc = ostid_to_fid(&info->fti_fid, &fm_key->lfik_oa.o_oi,
                                  ofd->ofd_lut.lut_lsd.lsd_osd_index);
                if (rc != 0)
                        RETURN(rc);
 
                rc = ofd_fiemap_get(env, ofd, &info->fti_fid, fiemap);
        } else {
-               CERROR("%s: not supported key %s\n", ofd_name(ofd), (char*)key);
+               CERROR("%s: not supported key %s\n",
+                      ofd_name(ofd), (char *)key);
                rc = -EOPNOTSUPP;
        }
 
@@ -682,115 +768,6 @@ static int ofd_get_info(const struct lu_env *env, struct obd_export *exp,
 }
 
 /**
- * Get file system statistics of OST server.
- *
- * Helper function for ofd_statfs(), also used by grant code.
- * Implements caching for statistics to avoid calling OSD device each time.
- *
- * \param[in]  env       execution environment
- * \param[in]  ofd       OFD device
- * \param[out] osfs      statistic data to return
- * \param[in]  max_age   maximum age for cached data
- * \param[in]  from_cache show that data was get from cache or not
- *
- * \retval             0 if successful
- * \retval             negative value on error
- */
-int ofd_statfs_internal(const struct lu_env *env, struct ofd_device *ofd,
-                        struct obd_statfs *osfs, __u64 max_age, int *from_cache)
-{
-       int rc = 0;
-       ENTRY;
-
-       down_read(&ofd->ofd_lastid_rwsem);
-       /* Currently, for safe, we do not distinguish which LAST_ID is broken,
-        * we may do that in the future.
-        * Return -ENOSPC until the LAST_ID rebuilt. */
-       if (unlikely(ofd->ofd_lastid_rebuilding))
-               GOTO(out, rc = -ENOSPC);
-
-       spin_lock(&ofd->ofd_osfs_lock);
-       if (cfs_time_before_64(ofd->ofd_osfs_age, max_age) || max_age == 0) {
-               obd_size unstable;
-
-               /* statfs data are too old, get up-to-date one.
-                * we must be cautious here since multiple threads might be
-                * willing to update statfs data concurrently and we must
-                * grant that cached statfs data are always consistent */
-
-               if (ofd->ofd_statfs_inflight == 0)
-                       /* clear inflight counter if no users, although it would
-                        * take a while to overflow this 64-bit counter ... */
-                       ofd->ofd_osfs_inflight = 0;
-               /* notify ofd_grant_commit() that we want to track writes
-                * completed as of now */
-               ofd->ofd_statfs_inflight++;
-               /* record value of inflight counter before running statfs to
-                * compute the diff once statfs is completed */
-               unstable = ofd->ofd_osfs_inflight;
-               spin_unlock(&ofd->ofd_osfs_lock);
-
-               /* statfs can sleep ... hopefully not for too long since we can
-                * call it fairly often as space fills up */
-               rc = dt_statfs(env, ofd->ofd_osd, osfs);
-               if (unlikely(rc))
-                       GOTO(out, rc);
-
-               spin_lock(&ofd->ofd_grant_lock);
-               spin_lock(&ofd->ofd_osfs_lock);
-               /* calculate how much space was written while we released the
-                * ofd_osfs_lock */
-               unstable = ofd->ofd_osfs_inflight - unstable;
-               ofd->ofd_osfs_unstable = 0;
-               if (unstable) {
-                       /* some writes completed while we were running statfs
-                        * w/o the ofd_osfs_lock. Those ones got added to
-                        * the cached statfs data that we are about to crunch.
-                        * Take them into account in the new statfs data */
-                       osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
-                                              unstable >> ofd->ofd_blockbits);
-                       /* However, we don't really know if those writes got
-                        * accounted in the statfs call, so tell
-                        * ofd_grant_space_left() there is some uncertainty
-                        * on the accounting of those writes.
-                        * The purpose is to prevent spurious error messages in
-                        * ofd_grant_space_left() since those writes might be
-                        * accounted twice. */
-                       ofd->ofd_osfs_unstable += unstable;
-               }
-               /* similarly, there is some uncertainty on write requests
-                * between prepare & commit */
-               ofd->ofd_osfs_unstable += ofd->ofd_tot_pending;
-               spin_unlock(&ofd->ofd_grant_lock);
-
-               /* finally udpate cached statfs data */
-               ofd->ofd_osfs = *osfs;
-               ofd->ofd_osfs_age = cfs_time_current_64();
-
-               ofd->ofd_statfs_inflight--; /* stop tracking */
-               if (ofd->ofd_statfs_inflight == 0)
-                       ofd->ofd_osfs_inflight = 0;
-               spin_unlock(&ofd->ofd_osfs_lock);
-
-               if (from_cache)
-                       *from_cache = 0;
-       } else {
-               /* use cached statfs data */
-               *osfs = ofd->ofd_osfs;
-               spin_unlock(&ofd->ofd_osfs_lock);
-               if (from_cache)
-                       *from_cache = 1;
-       }
-
-       GOTO(out, rc);
-
-out:
-       up_read(&ofd->ofd_lastid_rwsem);
-
-       return rc;
-}
-
-/**
  * Implementation of obd_ops::o_statfs.
  *
  * This function returns information about a storage file system.
@@ -812,71 +789,89 @@ out:
  * \retval             negative value on error
  */
 int ofd_statfs(const struct lu_env *env,  struct obd_export *exp,
-              struct obd_statfs *osfs, __u64 max_age, __u32 flags)
+              struct obd_statfs *osfs, time64_t max_age, __u32 flags)
 {
-        struct obd_device      *obd = class_exp2obd(exp);
-       struct ofd_device       *ofd = ofd_exp(exp);
-       int                      rc;
+       struct obd_device *obd = class_exp2obd(exp);
+       struct ofd_device *ofd = ofd_exp(exp);
+       struct tg_grants_data *tgd = &ofd->ofd_lut.lut_tgd;
+       int rc;
 
        ENTRY;
 
-       rc = ofd_statfs_internal(env, ofd, osfs, max_age, NULL);
+       rc = tgt_statfs_internal(env, &ofd->ofd_lut, osfs, max_age, NULL);
        if (unlikely(rc))
                GOTO(out, rc);
 
-       /* at least try to account for cached pages.  its still racy and
+       /*
+        * at least try to account for cached pages.  its still racy and
         * might be under-reporting if clients haven't announced their
-        * caches with brw recently */
+        * caches with brw recently
+        */
 
-       CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
-              " pending "LPU64" free "LPU64" avail "LPU64"\n",
-              ofd->ofd_tot_dirty, ofd->ofd_tot_granted, ofd->ofd_tot_pending,
-              osfs->os_bfree << ofd->ofd_blockbits,
-              osfs->os_bavail << ofd->ofd_blockbits);
+       CDEBUG(D_SUPER | D_CACHE,
+              "blocks cached %llu granted %llu pending %llu free %llu avail %llu\n",
+              tgd->tgd_tot_dirty, tgd->tgd_tot_granted,
+              tgd->tgd_tot_pending,
+              osfs->os_bfree << tgd->tgd_blockbits,
+              osfs->os_bavail << tgd->tgd_blockbits);
 
-       osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
-                                ((ofd->ofd_tot_dirty + ofd->ofd_tot_pending +
-                                  osfs->os_bsize - 1) >> ofd->ofd_blockbits));
+       osfs->os_bavail -= min_t(u64, osfs->os_bavail,
+                                ((tgd->tgd_tot_dirty + tgd->tgd_tot_pending +
+                                  osfs->os_bsize - 1) >> tgd->tgd_blockbits));
 
-       /* The QoS code on the MDS does not care about space reserved for
-        * precreate, so take it out. */
+       /*
+        * The QoS code on the MDS does not care about space reserved for
+        * precreate, so take it out.
+        */
        if (exp_connect_flags(exp) & OBD_CONNECT_MDS) {
-               struct filter_export_data *fed;
+               struct tg_export_data *ted;
 
-               fed = &obd->obd_self_export->exp_filter_data;
-               osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
-                                        fed->fed_grant >> ofd->ofd_blockbits);
+               ted = &obd->obd_self_export->exp_target_data;
+               osfs->os_granted = min_t(u64, osfs->os_bavail,
+                                         ted->ted_grant >> tgd->tgd_blockbits);
+               osfs->os_bavail -= osfs->os_granted;
        }
 
-       ofd_grant_sanity_check(obd, __FUNCTION__);
-       CDEBUG(D_CACHE, LPU64" blocks: "LPU64" free, "LPU64" avail; "
-              LPU64" objects: "LPU64" free; state %x\n",
+       tgt_grant_sanity_check(obd, __func__);
+       CDEBUG(D_CACHE, "%llu blocks: %llu free, %llu avail; "
+              "%llu objects: %llu free; state %x\n",
               osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
               osfs->os_files, osfs->os_ffree, osfs->os_state);
 
        if (OBD_FAIL_CHECK_VALUE(OBD_FAIL_OST_ENOINO,
-                                ofd->ofd_lut.lut_lsd.lsd_osd_index))
-               osfs->os_ffree = 0;
+                                ofd->ofd_lut.lut_lsd.lsd_osd_index)) {
+               /* Reduce free inode count to zero, but keep "used" intact */
+               osfs->os_files -= osfs->os_ffree;
+               osfs->os_ffree -= osfs->os_ffree;
+       }
 
        /* OS_STATE_READONLY can be set by OSD already */
        if (ofd->ofd_raid_degraded)
                osfs->os_state |= OS_STATE_DEGRADED;
 
-       if (obd->obd_self_export != exp && ofd_grant_compat(exp, ofd)) {
-               /* clients which don't support OBD_CONNECT_GRANT_PARAM
+       if (obd->obd_self_export != exp && !exp_grant_param_supp(exp) &&
+           tgd->tgd_blockbits > COMPAT_BSIZE_SHIFT) {
+               /*
+                * clients which don't support OBD_CONNECT_GRANT_PARAM
                 * should not see a block size > page size, otherwise
                 * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
                 * block size which is the biggest block size known to work
-                * with all client's page size. */
-               osfs->os_blocks <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
-               osfs->os_bfree  <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
-               osfs->os_bavail <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
+                * with all client's page size.
+                */
+               osfs->os_blocks <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
+               osfs->os_bfree  <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
+               osfs->os_bavail <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
+               osfs->os_granted <<= tgd->tgd_blockbits - COMPAT_BSIZE_SHIFT;
                osfs->os_bsize    = 1 << COMPAT_BSIZE_SHIFT;
        }
 
        if (OBD_FAIL_CHECK_VALUE(OBD_FAIL_OST_ENOSPC,
-                                ofd->ofd_lut.lut_lsd.lsd_osd_index))
-               osfs->os_bfree = osfs->os_bavail = 2;
+                                ofd->ofd_lut.lut_lsd.lsd_osd_index)) {
+               /* Reduce free blocks count near zero, but keep "used" intact */
+               osfs->os_bavail -= osfs->os_bavail - 2;
+               osfs->os_blocks -= osfs->os_bfree - 2;
+               osfs->os_bfree -= osfs->os_bfree - 2;
+       }
 
        EXIT;
 out:
@@ -891,24 +886,21 @@ out:
 
  * \param[in] env      execution environment
  * \param[in] exp      OBD export of OFD device
- * \param[in] oinfo    obd_info with setattr parameters
- * \param[in] oti      not used in OFD
+ * \param[in] oa       setattr parameters
  *
  * \retval             0 if successful
  * \retval             negative value on error
  */
 static int ofd_echo_setattr(const struct lu_env *env, struct obd_export *exp,
-                           struct obd_info *oinfo, struct obd_trans_info *oti)
+                           struct obdo *oa)
 {
-       struct ofd_thread_info  *info;
-       struct ofd_device       *ofd = ofd_exp(exp);
-       struct ldlm_namespace   *ns = ofd->ofd_namespace;
-       struct ldlm_resource    *res;
-       struct ofd_object       *fo;
-       struct obdo             *oa = oinfo->oi_oa;
-       struct lu_fid           *fid = &oa->o_oi.oi_fid;
-       struct filter_fid       *ff = NULL;
-       int                      rc = 0;
+       struct ofd_thread_info *info;
+       struct ofd_device *ofd = ofd_exp(exp);
+       struct ldlm_namespace *ns = ofd->ofd_namespace;
+       struct ldlm_resource *res;
+       struct ofd_object *fo;
+       struct lu_fid *fid = &oa->o_oi.oi_fid;
+       int rc = 0;
 
        ENTRY;
 
@@ -916,10 +908,11 @@ static int ofd_echo_setattr(const struct lu_env *env, struct obd_export *exp,
 
        ost_fid_build_resid(fid, &info->fti_resid);
 
-       /* This would be very bad - accidentally truncating a file when
-        * changing the time or similar - bug 12203. */
-       if (oa->o_valid & OBD_MD_FLSIZE &&
-           oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
+       /*
+        * This would be very bad - accidentally truncating a file when
+        * changing the time or similar - bug 12203.
+        */
+       if (oa->o_valid & OBD_MD_FLSIZE) {
                static char mdsinum[48];
 
                if (oa->o_valid & OBD_MD_FLFID)
@@ -945,13 +938,8 @@ static int ofd_echo_setattr(const struct lu_env *env, struct obd_export *exp,
        la_from_obdo(&info->fti_attr, oa, oa->o_valid);
        info->fti_attr.la_valid &= ~LA_TYPE;
 
-       if (oa->o_valid & OBD_MD_FLFID) {
-               ff = &info->fti_mds_fid;
-               ofd_prepare_fidea(ff, oa);
-       }
-
        /* setting objects attributes (including owner/group) */
-       rc = ofd_attr_set(env, fo, &info->fti_attr, ff);
+       rc = ofd_attr_set(env, fo, &info->fti_attr, oa);
        if (rc)
                GOTO(out_unlock, rc);
 
@@ -961,12 +949,15 @@ out_unlock:
        ofd_object_put(env, fo);
 out:
        if (rc == 0) {
-               /* we do not call this before to avoid lu_object_find() in
+               /*
+                * we do not call this before to avoid lu_object_find() in
                 *  ->lvbo_update() holding another reference on the object.
                 * otherwise concurrent destroy can make the object unavailable
                 * for 2nd lu_object_find() waiting for the first reference
-                * to go... deadlock! */
-               res = ldlm_resource_get(ns, NULL, &info->fti_resid, LDLM_EXTENT, 0);
+                * to go... deadlock!
+                */
+               res = ldlm_resource_get(ns, NULL, &info->fti_resid,
+                                       LDLM_EXTENT, 0);
                if (!IS_ERR(res)) {
                        ldlm_res_lvbo_update(res, NULL, 0);
                        ldlm_resource_putref(res);
@@ -981,7 +972,7 @@ out:
  *
  * Supplemental function to destroy object by FID, it is used by request
  * handler and by ofd_echo_destroy() below to find object by FID, lock it
- * and call ofd_object_destroy() finally.
+ * and call ofd_destroy() finally.
  *
  * \param[in] env      execution environment
  * \param[in] ofd      OFD device
@@ -994,14 +985,12 @@ out:
 int ofd_destroy_by_fid(const struct lu_env *env, struct ofd_device *ofd,
                       const struct lu_fid *fid, int orphan)
 {
-       struct ofd_thread_info  *info = ofd_info(env);
-       struct lustre_handle     lockh;
-       __u64                    flags = LDLM_FL_AST_DISCARD_DATA;
-       __u64                    rc = 0;
-       ldlm_policy_data_t       policy = {
-                                       .l_extent = { 0, OBD_OBJECT_EOF }
-                                };
-       struct ofd_object       *fo;
+       struct ofd_thread_info *info = ofd_info(env);
+       struct lustre_handle lockh;
+       union ldlm_policy_data policy = { .l_extent = { 0, OBD_OBJECT_EOF } };
+       struct ofd_object *fo;
+       __u64 flags = LDLM_FL_AST_DISCARD_DATA;
+       __u64 rc = 0;
 
        ENTRY;
 
@@ -1009,10 +998,12 @@ int ofd_destroy_by_fid(const struct lu_env *env, struct ofd_device *ofd,
        if (IS_ERR(fo))
                RETURN(PTR_ERR(fo));
 
-       /* Tell the clients that the object is gone now and that they should
-        * throw away any cached pages. */
+       /*
+        * Tell the clients that the object is gone now and that they should
+        * throw away any cached pages.
+        */
        ost_fid_build_resid(fid, &info->fti_resid);
-       rc = ldlm_cli_enqueue_local(ofd->ofd_namespace, &info->fti_resid,
+       rc = ldlm_cli_enqueue_local(env, ofd->ofd_namespace, &info->fti_resid,
                                    LDLM_EXTENT, &policy, LCK_PW, &flags,
                                    ldlm_blocking_ast, ldlm_completion_ast,
                                    NULL, NULL, 0, LVB_T_NONE, NULL, &lockh);
@@ -1023,7 +1014,7 @@ int ofd_destroy_by_fid(const struct lu_env *env, struct ofd_device *ofd,
 
        LASSERT(fo != NULL);
 
-       rc = ofd_object_destroy(env, fo, orphan);
+       rc = ofd_destroy(env, fo, orphan);
        EXIT;
 
        ofd_object_put(env, fo);
@@ -1039,7 +1030,6 @@ int ofd_destroy_by_fid(const struct lu_env *env, struct ofd_device *ofd,
  * \param[in] env      execution environment
  * \param[in] exp      OBD export of OFD device
  * \param[in] oa       obdo structure with FID
- * \param[in] oti      not used in OFD
  *
  * Note: this is OBD API method which is common API for server OBDs and
  * client OBDs. Thus some parameters used in client OBDs may not be used
@@ -1049,16 +1039,20 @@ int ofd_destroy_by_fid(const struct lu_env *env, struct ofd_device *ofd,
  * \retval             negative value on error
  */
 static int ofd_echo_destroy(const struct lu_env *env, struct obd_export *exp,
-                           struct obdo *oa, struct obd_trans_info *oti)
+                           struct obdo *oa)
 {
-       struct ofd_device       *ofd = ofd_exp(exp);
-       struct lu_fid           *fid = &oa->o_oi.oi_fid;
-       int                      rc = 0;
+       struct ofd_device *ofd = ofd_exp(exp);
+       struct lu_fid *fid = &oa->o_oi.oi_fid;
+       int rc = 0;
 
        ENTRY;
 
        ofd_info_init(env, exp);
 
+       rc = ofd_validate_seq(exp, ostid_seq(&oa->o_oi));
+       if (rc != 0)
+               RETURN(rc);
+
        CDEBUG(D_HA, "%s: Destroy object "DFID"\n", ofd_name(ofd), PFID(fid));
 
        rc = ofd_destroy_by_fid(env, ofd, fid, 0);
@@ -1086,8 +1080,6 @@ out:
  * \param[in]  env     execution environment
  * \param[in]  exp     OBD export of OFD device
  * \param[in]  oa      obdo structure with FID sequence to use
- * \param[out] ea      contains object ID/SEQ to return
- * \param[in]  oti     not used in OFD
  *
  * Note: this is OBD API method which is common API for server OBDs and
  * client OBDs. Thus some parameters used in client OBDs may not be used
@@ -1097,19 +1089,20 @@ out:
  * \retval             negative value on error
  */
 static int ofd_echo_create(const struct lu_env *env, struct obd_export *exp,
-                          struct obdo *oa, struct obd_trans_info *oti)
+                          struct obdo *oa)
 {
-       struct ofd_device       *ofd = ofd_exp(exp);
-       struct ofd_thread_info  *info;
-       obd_seq                  seq = ostid_seq(&oa->o_oi);
-       struct ofd_seq          *oseq;
-       int                      rc = 0, diff = 1;
-       obd_id                   next_id;
-       int                      count;
+       struct ofd_device *ofd = ofd_exp(exp);
+       u64 seq = ostid_seq(&oa->o_oi);
+       struct ofd_seq *oseq;
+       long granted;
+       u64 next_id;
+       s64 diff = 1;
+       int rc = 0;
+       int count;
 
        ENTRY;
 
-       info = ofd_info_init(env, exp);
+       ofd_info_init(env, exp);
 
        LASSERT(seq == FID_SEQ_ECHO);
        LASSERT(oa->o_valid & OBD_MD_FLGROUP);
@@ -1117,42 +1110,56 @@ static int ofd_echo_create(const struct lu_env *env, struct obd_export *exp,
        CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
 
        down_read(&ofd->ofd_lastid_rwsem);
-       /* Currently, for safe, we do not distinguish which LAST_ID is broken,
+       /*
+        * Currently, for safe, we do not distinguish which LAST_ID is broken,
         * we may do that in the future.
-        * Return -ENOSPC until the LAST_ID rebuilt. */
+        * Return -ENOSPC until the LAST_ID rebuilt.
+        */
        if (unlikely(ofd->ofd_lastid_rebuilding))
                GOTO(out_sem, rc = -ENOSPC);
 
+       rc = ofd_validate_seq(exp, seq);
+       if (rc != 0)
+               RETURN(rc);
+
        oseq = ofd_seq_load(env, ofd, seq);
        if (IS_ERR(oseq)) {
-               CERROR("%s: Can't find FID Sequence "LPX64": rc = %ld\n",
+               CERROR("%s: Can't find FID Sequence %#llx: rc = %ld\n",
                       ofd_name(ofd), seq, PTR_ERR(oseq));
                GOTO(out_sem, rc = -EINVAL);
        }
 
        mutex_lock(&oseq->os_create_lock);
-       rc = ofd_grant_create(env, ofd_obd(ofd)->obd_self_export, &diff);
-       if (rc < 0) {
-               CDEBUG(D_HA, "%s: failed to acquire grant space for "
-                      "precreate (%d): rc = %d\n", ofd_name(ofd), diff, rc);
+       granted = tgt_grant_create(env, ofd_obd(ofd)->obd_self_export, &diff);
+       if (granted < 0) {
+               rc = granted;
+               granted = 0;
+               CDEBUG(D_HA,
+                      "%s: failed to acquire grant space for precreate (%lld): rc = %d\n",
+                      ofd_name(ofd), diff, rc);
                diff = 0;
                GOTO(out, rc);
        }
 
        next_id = ofd_seq_last_oid(oseq) + 1;
-       count = ofd_precreate_batch(ofd, diff);
+       count = ofd_precreate_batch(ofd, (int)diff);
 
        rc = ofd_precreate_objects(env, ofd, next_id, oseq, count, 0);
        if (rc < 0) {
                CERROR("%s: unable to precreate: rc = %d\n",
                       ofd_name(ofd), rc);
        } else {
-               ostid_set_id(&oa->o_oi, ofd_seq_last_oid(oseq));
+               rc = ostid_set_id(&oa->o_oi, ofd_seq_last_oid(oseq));
+               if (rc) {
+                       CERROR("%s: Bad %llu to set " DOSTID " : rc %d\n",
+                              ofd_name(ofd),
+                              (unsigned long long)ofd_seq_last_oid(oseq),
+                              POSTID(&oa->o_oi), rc);
+               }
                oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
-               rc = 0;
        }
 
-       ofd_grant_commit(env, ofd_obd(ofd)->obd_self_export, rc);
+       tgt_grant_commit(ofd_obd(ofd)->obd_self_export, granted, rc);
 out:
        mutex_unlock(&oseq->os_create_lock);
        ofd_seq_put(env, oseq);
@@ -1171,20 +1178,20 @@ out_sem:
  *
  * \param[in]    env   execution environment
  * \param[in]    exp   OBD export of OFD device
- * \param[in,out] oinfo        contains FID of object to get attributes from and
+ * \param[in,out] oa   contains FID of object to get attributes from and
  *                     is used to return attributes back
  *
  * \retval             0 if successful
  * \retval             negative value on error
  */
 static int ofd_echo_getattr(const struct lu_env *env, struct obd_export *exp,
-                           struct obd_info *oinfo)
+                           struct obdo *oa)
 {
-       struct ofd_device       *ofd = ofd_exp(exp);
-       struct ofd_thread_info  *info;
-       struct lu_fid           *fid = &oinfo->oi_oa->o_oi.oi_fid;
-       struct ofd_object       *fo;
-       int                      rc = 0;
+       struct ofd_device *ofd = ofd_exp(exp);
+       struct ofd_thread_info *info;
+       struct lu_fid *fid = &oa->o_oi.oi_fid;
+       struct ofd_object *fo;
+       int rc = 0;
 
        ENTRY;
 
@@ -1196,18 +1203,18 @@ static int ofd_echo_getattr(const struct lu_env *env, struct obd_export *exp,
 
        LASSERT(fo != NULL);
        rc = ofd_attr_get(env, fo, &info->fti_attr);
-       oinfo->oi_oa->o_valid = OBD_MD_FLID;
+       oa->o_valid = OBD_MD_FLID;
        if (rc == 0) {
                __u64 curr_version;
 
-               obdo_from_la(oinfo->oi_oa, &info->fti_attr,
-                            OFD_VALID_FLAGS | LA_UID | LA_GID);
+               obdo_from_la(oa, &info->fti_attr,
+                            OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
 
                /* Store object version in reply */
                curr_version = dt_version_get(env, ofd_object_child(fo));
                if ((__s64)curr_version != -EOPNOTSUPP) {
-                       oinfo->oi_oa->o_valid |= OBD_MD_FLDATAVERSION;
-                       oinfo->oi_oa->o_data_version = curr_version;
+                       oa->o_valid |= OBD_MD_FLDATAVERSION;
+                       oa->o_data_version = curr_version;
                }
        }
 
@@ -1233,26 +1240,28 @@ static int ofd_ioc_get_obj_version(const struct lu_env *env,
                                   struct ofd_device *ofd, void *karg)
 {
        struct obd_ioctl_data *data = karg;
-       struct lu_fid          fid;
-       struct ofd_object     *fo;
-       dt_obj_version_t       version;
-       int                    rc = 0;
+       struct lu_fid fid;
+       struct ofd_object *fo;
+       dt_obj_version_t version;
+       int rc = 0;
 
        ENTRY;
 
-       if (data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
+       if (!data->ioc_inlbuf2 || data->ioc_inllen2 != sizeof(version))
                GOTO(out, rc = -EINVAL);
 
-       if (data->ioc_inlbuf1 != NULL && data->ioc_inllen1 == sizeof(fid)) {
+       if (data->ioc_inlbuf1 && data->ioc_inllen1 == sizeof(fid)) {
                fid = *(struct lu_fid *)data->ioc_inlbuf1;
-       } else if (data->ioc_inlbuf3 != NULL &&
+       } else if (data->ioc_inlbuf3 &&
                   data->ioc_inllen3 == sizeof(__u64) &&
-                  data->ioc_inlbuf4 != NULL &&
+                  data->ioc_inlbuf4 &&
                   data->ioc_inllen4 == sizeof(__u64)) {
-               struct ost_id ostid;
+               struct ost_id ostid = { };
 
                ostid_set_seq(&ostid, *(__u64 *)data->ioc_inlbuf4);
-               ostid_set_id(&ostid, *(__u64 *)data->ioc_inlbuf3);
+               rc = ostid_set_id(&ostid, *(__u64 *)data->ioc_inlbuf3);
+               if (rc)
+                       GOTO(out, rc);
                rc = ostid_to_fid(&fid, &ostid,
                                  ofd->ofd_lut.lut_lsd.lsd_osd_index);
                if (rc != 0)
@@ -1303,12 +1312,12 @@ out:
  * \retval             negative value on error
  */
 static int ofd_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
-                        void *karg, void *uarg)
+                        void *karg, void __user *uarg)
 {
-       struct lu_env            env;
-       struct ofd_device       *ofd = ofd_exp(exp);
-       struct obd_device       *obd = ofd_obd(ofd);
-       int                      rc;
+       struct lu_env env;
+       struct ofd_device *ofd = ofd_exp(exp);
+       struct obd_device *obd = ofd_obd(ofd);
+       int rc;
 
        ENTRY;
 
@@ -1320,6 +1329,7 @@ static int ofd_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
        switch (cmd) {
        case OBD_IOC_ABORT_RECOVERY:
                CERROR("%s: aborting recovery\n", obd->obd_name);
+               obd->obd_abort_recovery = 1;
                target_stop_recovery_thread(obd);
                break;
        case OBD_IOC_SYNC:
@@ -1335,7 +1345,7 @@ static int ofd_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                struct obd_ioctl_data *data = karg;
                struct lfsck_start_param lsp;
 
-               if (unlikely(data == NULL)) {
+               if (unlikely(!data)) {
                        rc = -EINVAL;
                        break;
                }
@@ -1351,7 +1361,7 @@ static int ofd_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 
                stop.ls_status = LS_STOPPED;
                /* Old lfsck utils may pass NULL @stop. */
-               if (data->ioc_inlbuf1 == NULL)
+               if (!data->ioc_inlbuf1)
                        stop.ls_flags = 0;
                else
                        stop.ls_flags =
@@ -1380,44 +1390,14 @@ static int ofd_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
  * special actions, it just invokes target_recovery_cleanup().
  *
  * \param[in] obd      OBD device of OFD
- * \param[in] stage    cleanup stage
  *
  * \retval             0
  */
-static int ofd_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
+static int ofd_precleanup(struct obd_device *obd)
 {
-       int rc = 0;
-
        ENTRY;
-
-       switch(stage) {
-       case OBD_CLEANUP_EARLY:
-               break;
-       case OBD_CLEANUP_EXPORTS:
-               target_cleanup_recovery(obd);
-               break;
-       }
-       RETURN(rc);
-}
-
-/**
- * Implementation of obd_ops::o_ping.
- *
- * This is OFD-specific part of OBD_PING request handling.
- * It controls Filter Modification Data (FMD) expiration each time PING is
- * received.
- *
- * \see  ofd_fmd_expire() and ofd_fmd.c for details
- *
- * \param[in] env      execution environment
- * \param[in] exp      OBD export of client
- *
- * \retval             0
- */
-static int ofd_ping(const struct lu_env *env, struct obd_export *exp)
-{
-       ofd_fmd_expire(exp);
-       return 0;
+       target_cleanup_recovery(obd);
+       RETURN(0);
 }
 
 /**
@@ -1440,13 +1420,13 @@ static int ofd_ping(const struct lu_env *env, struct obd_export *exp)
  */
 static int ofd_health_check(const struct lu_env *nul, struct obd_device *obd)
 {
-       struct ofd_device       *ofd = ofd_dev(obd->obd_lu_dev);
-       struct ofd_thread_info  *info;
-       struct lu_env            env;
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+       struct ofd_thread_info *info;
+       struct lu_env env;
 #ifdef USE_HEALTH_CHECK_WRITE
-       struct thandle          *th;
+       struct thandle *th;
 #endif
-       int                      rc = 0;
+       int rc = 0;
 
        /* obd_proc_read_health pass NULL env, we need real one */
        rc = lu_env_init(&env, LCT_DT_THREAD);
@@ -1458,15 +1438,15 @@ static int ofd_health_check(const struct lu_env *nul, struct obd_device *obd)
        if (unlikely(rc))
                GOTO(out, rc);
 
-       if (info->fti_u.osfs.os_state == OS_STATE_READONLY)
+       if (info->fti_u.osfs.os_state & OS_STATE_READONLY)
                GOTO(out, rc = -EROFS);
 
 #ifdef USE_HEALTH_CHECK_WRITE
-       OBD_ALLOC(info->fti_buf.lb_buf, PAGE_CACHE_SIZE);
-       if (info->fti_buf.lb_buf == NULL)
+       OBD_ALLOC(info->fti_buf.lb_buf, PAGE_SIZE);
+       if (!info->fti_buf.lb_buf)
                GOTO(out, rc = -ENOMEM);
 
-       info->fti_buf.lb_len = PAGE_CACHE_SIZE;
+       info->fti_buf.lb_len = PAGE_SIZE;
        info->fti_off = 0;
 
        th = dt_trans_create(&env, ofd->ofd_osd);
@@ -1485,9 +1465,10 @@ static int ofd_health_check(const struct lu_env *nul, struct obd_device *obd)
        }
        dt_trans_stop(&env, ofd->ofd_osd, th);
 
-       OBD_FREE(info->fti_buf.lb_buf, PAGE_CACHE_SIZE);
+       OBD_FREE(info->fti_buf.lb_buf, PAGE_SIZE);
 
-       CDEBUG(D_INFO, "write 1 page synchronously for checking io rc %d\n",rc);
+       CDEBUG(D_INFO, "write 1 page synchronously for checking io rc %d\n",
+              rc);
 #endif
 out:
        lu_env_fini(&env);
@@ -1511,7 +1492,6 @@ struct obd_ops ofd_obd_ops = {
        .o_getattr              = ofd_echo_getattr,
        .o_iocontrol            = ofd_iocontrol,
        .o_precleanup           = ofd_precleanup,
-       .o_ping                 = ofd_ping,
        .o_health_check         = ofd_health_check,
        .o_set_info_async       = ofd_set_info_async,
        .o_get_info             = ofd_get_info,