#include <obd.h>
#include <obd_class.h>
+#include <obd_cksum.h>
#include "tgt_internal.h"
}
EXPORT_SYMBOL(tgt_name);
+/*
+ * Generic code handling requests that have struct mdt_body passed in:
+ *
+ * - extract mdt_body from request and save it in @tsi, if present;
+ *
+ * - create lu_object, corresponding to the fid in mdt_body, and save it in
+ * @tsi;
+ *
+ * - if HABEO_CORPUS flag is set for this request type check whether object
+ * actually exists on storage (lu_object_exists()).
+ *
+ */
+static int tgt_mdt_body_unpack(struct tgt_session_info *tsi, __u32 flags)
+{
+ const struct mdt_body *body;
+ struct lu_object *obj;
+ struct req_capsule *pill = tsi->tsi_pill;
+ int rc;
+
+ ENTRY;
+
+ body = req_capsule_client_get(pill, &RMF_MDT_BODY);
+ if (body == NULL)
+ RETURN(-EFAULT);
+
+ tsi->tsi_mdt_body = body;
+
+ if (!(body->valid & OBD_MD_FLID))
+ RETURN(0);
+
+ /* mdc_pack_body() doesn't check if fid is zero and set OBD_ML_FID
+ * in any case in pre-2.5 clients. Fix that here if needed */
+ if (unlikely(fid_is_zero(&body->fid1)))
+ RETURN(0);
+
+ if (!fid_is_sane(&body->fid1)) {
+ CERROR("%s: invalid FID: "DFID"\n", tgt_name(tsi->tsi_tgt),
+ PFID(&body->fid1));
+ RETURN(-EINVAL);
+ }
+
+ obj = lu_object_find(tsi->tsi_env,
+ &tsi->tsi_tgt->lut_bottom->dd_lu_dev,
+ &body->fid1, NULL);
+ if (!IS_ERR(obj)) {
+ if ((flags & HABEO_CORPUS) && !lu_object_exists(obj)) {
+ lu_object_put(tsi->tsi_env, obj);
+ /* for capability renew ENOENT will be handled in
+ * mdt_renew_capa */
+ if (body->valid & OBD_MD_FLOSSCAPA)
+ rc = 0;
+ else
+ rc = -ENOENT;
+ } else {
+ tsi->tsi_corpus = obj;
+ rc = 0;
+ }
+ } else {
+ rc = PTR_ERR(obj);
+ }
+ RETURN(rc);
+}
+
+/**
+ * Validate oa from client.
+ * If the request comes from 2.0 clients, currently only RSVD seq and IDIF
+ * req are valid.
+ * a. objects in Single MDT FS seq = FID_SEQ_OST_MDT0, oi_id != 0
+ * b. Echo objects(seq = 2), old echo client still use oi_id/oi_seq to
+ * pack ost_id. Because non-zero oi_seq will make it diffcult to tell
+ * whether this is oi_fid or real ostid. So it will check
+ * OBD_CONNECT_FID, then convert the ostid to FID for old client.
+ * c. Old FID-disable osc will send IDIF.
+ * d. new FID-enable osc/osp will send normal FID.
+ *
+ * And also oi_id/f_oid should always start from 1. oi_id/f_oid = 0 will
+ * be used for LAST_ID file, and only being accessed inside OST now.
+ */
+int tgt_validate_obdo(struct tgt_session_info *tsi, struct obdo *oa)
+{
+ int rc;
+
+ ENTRY;
+
+ if (unlikely(!(exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_FID) &&
+ fid_seq_is_echo(oa->o_oi.oi.oi_seq))) {
+ /* Sigh 2.[123] client still sends echo req with oi_id = 0
+ * during create, and we will reset this to 1, since this
+ * oi_id is basically useless in the following create process,
+ * but oi_id == 0 will make it difficult to tell whether it is
+ * real FID or ost_id. */
+ oa->o_oi.oi_fid.f_oid = oa->o_oi.oi.oi_id ?: 1;
+ oa->o_oi.oi_fid.f_seq = FID_SEQ_ECHO;
+ oa->o_oi.oi_fid.f_ver = 0;
+ } else {
+ if (unlikely((oa->o_valid & OBD_MD_FLID &&
+ ostid_id(&oa->o_oi) == 0)))
+ GOTO(out, rc = -EPROTO);
+
+ /* Note: this check might be forced in 2.5 or 2.6, i.e.
+ * all of the requests are required to setup FLGROUP */
+ if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP))) {
+ ostid_set_seq_mdt0(&oa->o_oi);
+ oa->o_valid |= OBD_MD_FLGROUP;
+ }
+
+ if (unlikely(!(fid_seq_is_idif(ostid_seq(&oa->o_oi)) ||
+ fid_seq_is_mdt0(ostid_seq(&oa->o_oi)) ||
+ fid_seq_is_norm(ostid_seq(&oa->o_oi)) ||
+ fid_seq_is_echo(ostid_seq(&oa->o_oi)))))
+ GOTO(out, rc = -EPROTO);
+ }
+ RETURN(0);
+out:
+ CERROR("%s: client %s sent bad object "DOSTID": rc = %d\n",
+ tgt_name(tsi->tsi_tgt), obd_export_nid2str(tsi->tsi_exp),
+ ostid_seq(&oa->o_oi), ostid_id(&oa->o_oi), rc);
+ return rc;
+}
+EXPORT_SYMBOL(tgt_validate_obdo);
+
+static int tgt_ost_body_unpack(struct tgt_session_info *tsi, __u32 flags)
+{
+ struct ost_body *body;
+ struct req_capsule *pill = tsi->tsi_pill;
+ struct lustre_capa *capa;
+ struct obd_ioobj *ioo;
+ int rc;
+
+ ENTRY;
+
+ body = req_capsule_client_get(pill, &RMF_OST_BODY);
+ if (body == NULL)
+ RETURN(-EFAULT);
+
+ rc = tgt_validate_obdo(tsi, &body->oa);
+ if (rc)
+ RETURN(rc);
+
+ if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
+ capa = req_capsule_client_get(tsi->tsi_pill, &RMF_CAPA1);
+ if (capa == NULL) {
+ CERROR("%s: OSSCAPA flag is set without capability\n",
+ tgt_name(tsi->tsi_tgt));
+ RETURN(-EFAULT);
+ }
+ }
+
+ tsi->tsi_ost_body = body;
+
+ if (req_capsule_has_field(pill, &RMF_OBD_IOOBJ, RCL_CLIENT)) {
+ unsigned max_brw;
+ struct niobuf_remote *rnb;
+
+ ioo = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
+ if (ioo == NULL)
+ RETURN(-EPROTO);
+
+ rnb = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
+ if (rnb == NULL)
+ RETURN(-EPROTO);
+
+ max_brw = ioobj_max_brw_get(ioo);
+ if (unlikely((max_brw & (max_brw - 1)) != 0)) {
+ CERROR("%s: client %s sent bad ioobj max %u for "DOSTID
+ ": rc = %d\n", tgt_name(tsi->tsi_tgt),
+ obd_export_nid2str(tsi->tsi_exp), max_brw,
+ POSTID(&body->oa.o_oi), -EPROTO);
+ RETURN(-EPROTO);
+ }
+ ioo->ioo_oid = body->oa.o_oi;
+ }
+
+ if (!(body->oa.o_valid & OBD_MD_FLID)) {
+ if (flags & HABEO_CORPUS) {
+ CERROR("%s: OBD_MD_FLID flag is not set in ost_body "
+ "but OID/FID is mandatory with HABEO_CORPUS\n",
+ tgt_name(tsi->tsi_tgt));
+ RETURN(-EPROTO);
+ } else {
+ RETURN(0);
+ }
+ }
+
+ rc = ostid_to_fid(&tsi->tsi_fid, &body->oa.o_oi, 0);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (!fid_is_sane(&tsi->tsi_fid)) {
+ CERROR("%s: invalid FID: "DFID"\n", tgt_name(tsi->tsi_tgt),
+ PFID(&tsi->tsi_fid));
+ RETURN(-EINVAL);
+ }
+
+ ost_fid_build_resid(&tsi->tsi_fid, &tsi->tsi_resid);
+
+ /*
+ * OST doesn't get object in advance for further use to prevent
+ * situations with nested object_find which is potential deadlock.
+ */
+ tsi->tsi_corpus = NULL;
+ RETURN(rc);
+}
+
static int tgt_unpack_req_pack_rep(struct tgt_session_info *tsi, __u32 flags)
{
struct req_capsule *pill = tsi->tsi_pill;
- const struct mdt_body *body = NULL;
- int rc = 0;
+ int rc;
ENTRY;
if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT)) {
- body = req_capsule_client_get(pill, &RMF_MDT_BODY);
- if (body == NULL)
- RETURN(-EFAULT);
+ rc = tgt_mdt_body_unpack(tsi, flags);
+ } else if (req_capsule_has_field(pill, &RMF_OST_BODY, RCL_CLIENT)) {
+ rc = tgt_ost_body_unpack(tsi, flags);
+ } else {
+ rc = 0;
}
- if (flags & HABEO_REFERO) {
+ if (rc == 0 && flags & HABEO_REFERO) {
/* Pack reply */
if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
req_capsule_set_size(pill, &RMF_MDT_MD, RCL_SERVER,
- body ? body->eadatasize : 0);
+ tsi->tsi_mdt_body->eadatasize);
if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
req_capsule_set_size(pill, &RMF_LOGCOOKIES,
RCL_SERVER, 0);
LASSERT(h->th_opc == lustre_msg_get_opc(req->rq_reqmsg));
LASSERT(current->journal_info == NULL);
+ /*
+ * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
+ * to put same checks into handlers like mdt_close(), mdt_reint(),
+ * etc., without talking to mdt authors first. Checking same thing
+ * there again is useless and returning 0 error without packing reply
+ * is buggy! Handlers either pack reply or return error.
+ *
+ * We return 0 here and do not send any reply in order to emulate
+ * network failure. Do not send any reply in case any of NET related
+ * fail_id has occured.
+ */
+ if (OBD_FAIL_CHECK_ORSET(h->th_fail_id, OBD_FAIL_ONCE))
+ RETURN(0);
+
rc = 0;
flags = h->th_flags;
LASSERT(ergo(flags & (HABEO_CORPUS | HABEO_REFERO),
LASSERT(current->journal_info == NULL);
- /*
- * If we're DISCONNECTing, the export_data is already freed
- *
- * WAS if (likely(... && h->mh_opc != MDS_DISCONNECT))
- */
if (likely(rc == 0 && req->rq_export))
target_committed_to_req(req);
switch (lustre_msg_get_opc(req->rq_reqmsg)) {
case MDS_DISCONNECT:
case OST_DISCONNECT:
+ case OBD_IDX_READ:
*process = 1;
RETURN(0);
case MDS_CLOSE:
case MDS_SYNC: /* used in unmounting */
case OBD_PING:
case MDS_REINT:
+ case UPDATE_OBJ:
case SEQ_QUERY:
case FLD_QUERY:
case LDLM_ENQUEUE:
+ case OST_CREATE:
+ case OST_DESTROY:
+ case OST_PUNCH:
+ case OST_SETATTR:
+ case OST_SYNC:
+ case OST_WRITE:
*process = target_queue_recovery_request(req, obd);
RETURN(0);
ENTRY;
switch (lustre_msg_get_opc(req->rq_reqmsg)) {
+ case MDS_CONNECT:
+ case OST_CONNECT:
+ case MGS_CONNECT:
case SEC_CTX_INIT:
case SEC_CTX_INIT_CONT:
case SEC_CTX_FINI:
RETURN(+1);
}
- if (unlikely(!class_connected_export(req->rq_export))) {
- CERROR("%s: operation %d on unconnected export from %s\n",
- req->rq_export != NULL ?
- req->rq_export->exp_obd->obd_name : "?",
- lustre_msg_get_opc(req->rq_reqmsg),
- libcfs_id2str(req->rq_peer));
- req->rq_status = -ENOTCONN;
- target_send_reply(req, -ENOTCONN, reply_fail_id);
- RETURN(0);
- }
-
if (!req->rq_export->exp_obd->obd_replayable)
RETURN(+1);
int tgt_request_handle(struct ptlrpc_request *req)
{
struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
+
struct lustre_msg *msg = req->rq_reqmsg;
struct tgt_handler *h;
struct tgt_opc_slice *s;
ENTRY;
+ /* Refill the context, to make sure all thread keys are allocated */
+ lu_env_refill(req->rq_svc_thread->t_env);
+
req_capsule_init(&req->rq_pill, req, RCL_SERVER);
tsi->tsi_pill = &req->rq_pill;
tsi->tsi_env = req->rq_svc_thread->t_env;
- tsi->tsi_dlm_req = NULL;
/* if request has export then get handlers slice from corresponding
* target, otherwise that should be connect operation */
rc = ptlrpc_error(req);
GOTO(out, rc);
}
+ /* recovery-small test 18c asks to drop connect reply */
+ if (unlikely(opc == OST_CONNECT &&
+ OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2)))
+ GOTO(out, rc = 0);
}
- /* this should be assertion actually, but keep it reporting error
- * for unified target development time */
- if (req->rq_export == NULL) {
- CERROR("Request with no export from %s, opcode %u\n",
- libcfs_nid2str(req->rq_peer.nid), opc);
- req->rq_status = -EFAULT;
+ if (unlikely(!class_connected_export(req->rq_export))) {
+ CDEBUG(D_HA, "operation %d on unconnected OST from %s\n",
+ opc, libcfs_id2str(req->rq_peer));
+ req->rq_status = -ENOTCONN;
rc = ptlrpc_error(req);
GOTO(out, rc);
}
-
tsi->tsi_tgt = tgt = class_exp2tgt(req->rq_export);
tsi->tsi_exp = req->rq_export;
+ if (exp_connect_flags(req->rq_export) & OBD_CONNECT_JOBSTATS)
+ tsi->tsi_jobid = lustre_msg_get_jobid(req->rq_reqmsg);
+ else
+ tsi->tsi_jobid = NULL;
request_fail_id = tgt->lut_request_fail_id;
tsi->tsi_reply_fail_id = tgt->lut_reply_fail_id;
out:
req_capsule_fini(tsi->tsi_pill);
tsi->tsi_pill = NULL;
+ if (tsi->tsi_corpus != NULL) {
+ lu_object_put(tsi->tsi_env, tsi->tsi_corpus);
+ tsi->tsi_corpus = NULL;
+ }
+ tsi->tsi_env = NULL;
+ tsi->tsi_mdt_body = NULL;
+ tsi->tsi_dlm_req = NULL;
+ fid_zero(&tsi->tsi_fid);
+ memset(&tsi->tsi_resid, 0, sizeof tsi->tsi_resid);
return rc;
}
EXPORT_SYMBOL(tgt_request_handle);
return rc;
}
+int tgt_adapt_sptlrpc_conf(struct lu_target *tgt, int initial)
+{
+ struct sptlrpc_rule_set tmp_rset;
+ int rc;
+
+ sptlrpc_rule_set_init(&tmp_rset);
+ rc = sptlrpc_conf_target_get_rules(tgt->lut_obd, &tmp_rset, initial);
+ if (rc) {
+ CERROR("%s: failed get sptlrpc rules: rc = %d\n",
+ tgt_name(tgt), rc);
+ return rc;
+ }
+
+ sptlrpc_target_update_exp_flavor(tgt->lut_obd, &tmp_rset);
+
+ write_lock(&tgt->lut_sptlrpc_lock);
+ sptlrpc_rule_set_free(&tgt->lut_sptlrpc_rset);
+ tgt->lut_sptlrpc_rset = tmp_rset;
+ write_unlock(&tgt->lut_sptlrpc_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(tgt_adapt_sptlrpc_conf);
+
int tgt_connect(struct tgt_session_info *tsi)
{
struct ptlrpc_request *req = tgt_ses_req(tsi);
reply = req_capsule_server_get(tsi->tsi_pill, &RMF_CONNECT_DATA);
spin_lock(&tsi->tsi_exp->exp_lock);
*exp_connect_flags_ptr(tsi->tsi_exp) = reply->ocd_connect_flags;
+ tsi->tsi_exp->exp_connect_data.ocd_brw_size = reply->ocd_brw_size;
spin_unlock(&tsi->tsi_exp->exp_lock);
RETURN(0);
}
EXPORT_SYMBOL(tgt_obd_qc_callback);
+int tgt_sendpage(struct tgt_session_info *tsi, struct lu_rdpg *rdpg, int nob)
+{
+ struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct obd_export *exp = req->rq_export;
+ struct ptlrpc_bulk_desc *desc;
+ struct l_wait_info *lwi = &tti->tti_u.rdpg.tti_wait_info;
+ int tmpcount;
+ int tmpsize;
+ int i;
+ int rc;
+
+ ENTRY;
+
+ desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1, BULK_PUT_SOURCE,
+ MDS_BULK_PORTAL);
+ if (desc == NULL)
+ RETURN(-ENOMEM);
+
+ if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
+ /* old client requires reply size in it's PAGE_CACHE_SIZE,
+ * which is rdpg->rp_count */
+ nob = rdpg->rp_count;
+
+ for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
+ i++, tmpcount -= tmpsize) {
+ tmpsize = min_t(int, tmpcount, PAGE_CACHE_SIZE);
+ ptlrpc_prep_bulk_page_pin(desc, rdpg->rp_pages[i], 0, tmpsize);
+ }
+
+ LASSERT(desc->bd_nob == nob);
+ rc = target_bulk_io(exp, desc, lwi);
+ ptlrpc_free_bulk_pin(desc);
+ RETURN(rc);
+}
+EXPORT_SYMBOL(tgt_sendpage);
+
+/*
+ * OBD_IDX_READ handler
+ */
+int tgt_obd_idx_read(struct tgt_session_info *tsi)
+{
+ struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
+ struct lu_rdpg *rdpg = &tti->tti_u.rdpg.tti_rdpg;
+ struct idx_info *req_ii, *rep_ii;
+ int rc, i;
+
+ ENTRY;
+
+ memset(rdpg, 0, sizeof(*rdpg));
+ req_capsule_set(tsi->tsi_pill, &RQF_OBD_IDX_READ);
+
+ /* extract idx_info buffer from request & reply */
+ req_ii = req_capsule_client_get(tsi->tsi_pill, &RMF_IDX_INFO);
+ if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
+ RETURN(err_serious(-EPROTO));
+
+ rc = req_capsule_server_pack(tsi->tsi_pill);
+ if (rc)
+ RETURN(err_serious(rc));
+
+ rep_ii = req_capsule_server_get(tsi->tsi_pill, &RMF_IDX_INFO);
+ if (rep_ii == NULL)
+ RETURN(err_serious(-EFAULT));
+ rep_ii->ii_magic = IDX_INFO_MAGIC;
+
+ /* extract hash to start with */
+ rdpg->rp_hash = req_ii->ii_hash_start;
+
+ /* extract requested attributes */
+ rdpg->rp_attrs = req_ii->ii_attrs;
+
+ /* check that fid packed in request is valid and supported */
+ if (!fid_is_sane(&req_ii->ii_fid))
+ RETURN(-EINVAL);
+ rep_ii->ii_fid = req_ii->ii_fid;
+
+ /* copy flags */
+ rep_ii->ii_flags = req_ii->ii_flags;
+
+ /* compute number of pages to allocate, ii_count is the number of 4KB
+ * containers */
+ if (req_ii->ii_count <= 0)
+ GOTO(out, rc = -EFAULT);
+ rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
+ exp_max_brw_size(tsi->tsi_exp));
+ rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE -1) >> PAGE_CACHE_SHIFT;
+
+ /* allocate pages to store the containers */
+ OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
+ if (rdpg->rp_pages == NULL)
+ GOTO(out, rc = -ENOMEM);
+ for (i = 0; i < rdpg->rp_npages; i++) {
+ rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
+ if (rdpg->rp_pages[i] == NULL)
+ GOTO(out, rc = -ENOMEM);
+ }
+
+ /* populate pages with key/record pairs */
+ rc = dt_index_read(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, rep_ii, rdpg);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
+ "asked %d > %d\n", rc, rdpg->rp_count);
+
+ /* send pages to client */
+ rc = tgt_sendpage(tsi, rdpg, rc);
+ if (rc)
+ GOTO(out, rc);
+ EXIT;
+out:
+ if (rdpg->rp_pages) {
+ for (i = 0; i < rdpg->rp_npages; i++)
+ if (rdpg->rp_pages[i])
+ __free_page(rdpg->rp_pages[i]);
+ OBD_FREE(rdpg->rp_pages,
+ rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
+ }
+ return rc;
+}
+EXPORT_SYMBOL(tgt_obd_idx_read);
+
+struct tgt_handler tgt_obd_handlers[] = {
+TGT_OBD_HDL (0, OBD_PING, tgt_obd_ping),
+TGT_OBD_HDL_VAR(0, OBD_LOG_CANCEL, tgt_obd_log_cancel),
+TGT_OBD_HDL_VAR(0, OBD_QC_CALLBACK, tgt_obd_qc_callback),
+TGT_OBD_HDL (0, OBD_IDX_READ, tgt_obd_idx_read)
+};
+EXPORT_SYMBOL(tgt_obd_handlers);
+
+int tgt_sync(const struct lu_env *env, struct lu_target *tgt,
+ struct dt_object *obj)
+{
+ int rc = 0;
+
+ ENTRY;
+
+ /* if no objid is specified, it means "sync whole filesystem" */
+ if (obj == NULL) {
+ rc = dt_sync(env, tgt->lut_bottom);
+ } else if (dt_version_get(env, obj) >
+ tgt->lut_obd->obd_last_committed) {
+ rc = dt_object_sync(env, obj);
+ }
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(tgt_sync);
/*
* Unified target DLM handlers.
*/
+
+/* Ensure that data and metadata are synced to the disk when lock is cancelled
+ * (if requested) */
+int tgt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
+ void *data, int flag)
+{
+ struct lu_env env;
+ struct lu_target *tgt;
+ struct dt_object *obj;
+ struct lu_fid fid;
+ int rc = 0;
+
+ ENTRY;
+
+ tgt = class_exp2tgt(lock->l_export);
+
+ if (flag == LDLM_CB_CANCELING &&
+ (lock->l_granted_mode & (LCK_PW | LCK_GROUP)) &&
+ (tgt->lut_sync_lock_cancel == ALWAYS_SYNC_ON_CANCEL ||
+ (tgt->lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL &&
+ lock->l_flags & LDLM_FL_CBPENDING))) {
+ rc = lu_env_init(&env, LCT_DT_THREAD);
+ if (unlikely(rc != 0))
+ RETURN(rc);
+
+ ost_fid_from_resid(&fid, &lock->l_resource->lr_name);
+ obj = dt_locate(&env, tgt->lut_bottom, &fid);
+ if (IS_ERR(obj))
+ GOTO(err_env, rc = PTR_ERR(obj));
+
+ if (!dt_object_exists(obj))
+ GOTO(err_put, rc = -ENOENT);
+
+ rc = tgt_sync(&env, tgt, obj);
+ if (rc < 0) {
+ CERROR("%s: sync failed on lock cancel: rc = %d\n",
+ tgt_name(tgt), rc);
+ }
+err_put:
+ lu_object_put(&env, &obj->do_lu);
+err_env:
+ lu_env_fini(&env);
+ }
+
+ rc = ldlm_server_blocking_ast(lock, desc, data, flag);
+ RETURN(rc);
+}
+
struct ldlm_callback_suite tgt_dlm_cbs = {
- .lcs_completion = ldlm_server_completion_ast,
- .lcs_blocking = ldlm_server_blocking_ast,
+ .lcs_completion = ldlm_server_completion_ast,
+ .lcs_blocking = tgt_blocking_ast,
+ .lcs_glimpse = ldlm_server_glimpse_ast
};
int tgt_enqueue(struct tgt_session_info *tsi)
* tsi->tsi_dlm_cbs was set by the *_req_handle() function.
*/
LASSERT(tsi->tsi_dlm_req != NULL);
-
rc = ldlm_handle_enqueue0(tsi->tsi_exp->exp_obd->obd_namespace, req,
tsi->tsi_dlm_req, &tgt_dlm_cbs);
if (rc)
}
EXPORT_SYMBOL(tgt_cp_callback);
+/* generic LDLM target handler */
+struct tgt_handler tgt_dlm_handlers[] = {
+TGT_DLM_HDL (HABEO_CLAVIS, LDLM_ENQUEUE, tgt_enqueue),
+TGT_DLM_HDL_VAR(HABEO_CLAVIS, LDLM_CONVERT, tgt_convert),
+TGT_DLM_HDL_VAR(0, LDLM_BL_CALLBACK, tgt_bl_callback),
+TGT_DLM_HDL_VAR(0, LDLM_CP_CALLBACK, tgt_cp_callback)
+};
+EXPORT_SYMBOL(tgt_dlm_handlers);
+
/*
* Unified target LLOG handlers.
*/
RETURN(rc);
}
EXPORT_SYMBOL(tgt_llog_prev_block);
+
+/* generic llog target handler */
+struct tgt_handler tgt_llog_handlers[] = {
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, tgt_llog_open),
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
+TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_DESTROY, tgt_llog_destroy),
+TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
+};
+EXPORT_SYMBOL(tgt_llog_handlers);
+
+/*
+ * sec context handlers
+ */
+/* XXX: Implement based on mdt_sec_ctx_handle()? */
+int tgt_sec_ctx_handle(struct tgt_session_info *tsi)
+{
+ return 0;
+}
+
+struct tgt_handler tgt_sec_ctx_handlers[] = {
+TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, tgt_sec_ctx_handle),
+TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT, tgt_sec_ctx_handle),
+TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, tgt_sec_ctx_handle),
+};
+EXPORT_SYMBOL(tgt_sec_ctx_handlers);
+
+/*
+ * initialize per-thread page pool (bug 5137).
+ */
+int tgt_io_thread_init(struct ptlrpc_thread *thread)
+{
+ struct tgt_thread_big_cache *tbc;
+
+ ENTRY;
+
+ LASSERT(thread != NULL);
+ LASSERT(thread->t_data == NULL);
+
+ OBD_ALLOC_LARGE(tbc, sizeof(*tbc));
+ if (tbc == NULL)
+ RETURN(-ENOMEM);
+ thread->t_data = tbc;
+ RETURN(0);
+}
+EXPORT_SYMBOL(tgt_io_thread_init);
+
+/*
+ * free per-thread pool created by tgt_thread_init().
+ */
+void tgt_io_thread_done(struct ptlrpc_thread *thread)
+{
+ struct tgt_thread_big_cache *tbc;
+
+ ENTRY;
+
+ LASSERT(thread != NULL);
+
+ /*
+ * be prepared to handle partially-initialized pools (because this is
+ * called from ost_io_thread_init() for cleanup.
+ */
+ tbc = thread->t_data;
+ if (tbc != NULL) {
+ OBD_FREE_LARGE(tbc, sizeof(*tbc));
+ thread->t_data = NULL;
+ }
+ EXIT;
+}
+EXPORT_SYMBOL(tgt_io_thread_done);
+/**
+ * Helper function for getting server side [start, start+count] DLM lock
+ * if asked by client.
+ */
+int tgt_extent_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
+ __u64 start, __u64 end, struct lustre_handle *lh,
+ int mode, __u64 *flags)
+{
+ ldlm_policy_data_t policy;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(lh != NULL);
+ LASSERT(ns != NULL);
+ LASSERT(!lustre_handle_is_used(lh));
+
+ policy.l_extent.gid = 0;
+ policy.l_extent.start = start & CFS_PAGE_MASK;
+
+ /*
+ * If ->o_blocks is EOF it means "lock till the end of the file".
+ * Otherwise, it's size of an extent or hole being punched (in bytes).
+ */
+ if (end == OBD_OBJECT_EOF || end < start)
+ policy.l_extent.end = OBD_OBJECT_EOF;
+ else
+ policy.l_extent.end = end | ~CFS_PAGE_MASK;
+
+ rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_EXTENT, &policy, mode,
+ flags, ldlm_blocking_ast,
+ ldlm_completion_ast, ldlm_glimpse_ast,
+ NULL, 0, LVB_T_NONE, NULL, lh);
+ RETURN(rc == ELDLM_OK ? 0 : -EIO);
+}
+EXPORT_SYMBOL(tgt_extent_lock);
+
+void tgt_extent_unlock(struct lustre_handle *lh, ldlm_mode_t mode)
+{
+ LASSERT(lustre_handle_is_used(lh));
+ ldlm_lock_decref(lh, mode);
+}
+EXPORT_SYMBOL(tgt_extent_unlock);
+
+int tgt_brw_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
+ struct obd_ioobj *obj, struct niobuf_remote *nb,
+ struct lustre_handle *lh, int mode)
+{
+ __u64 flags = 0;
+ int nrbufs = obj->ioo_bufcnt;
+ int i;
+
+ ENTRY;
+
+ LASSERT(mode == LCK_PR || mode == LCK_PW);
+ LASSERT(!lustre_handle_is_used(lh));
+
+ if (nrbufs == 0 || !(nb[0].flags & OBD_BRW_SRVLOCK))
+ RETURN(0);
+
+ for (i = 1; i < nrbufs; i++)
+ if (!(nb[i].flags & OBD_BRW_SRVLOCK))
+ RETURN(-EFAULT);
+
+ RETURN(tgt_extent_lock(ns, res_id, nb[0].offset,
+ nb[nrbufs - 1].offset + nb[nrbufs - 1].len - 1,
+ lh, mode, &flags));
+}
+EXPORT_SYMBOL(tgt_brw_lock);
+
+void tgt_brw_unlock(struct obd_ioobj *obj, struct niobuf_remote *niob,
+ struct lustre_handle *lh, int mode)
+{
+ ENTRY;
+
+ LASSERT(mode == LCK_PR || mode == LCK_PW);
+ LASSERT((obj->ioo_bufcnt > 0 && (niob[0].flags & OBD_BRW_SRVLOCK)) ==
+ lustre_handle_is_used(lh));
+ if (lustre_handle_is_used(lh))
+ tgt_extent_unlock(lh, mode);
+ EXIT;
+}
+EXPORT_SYMBOL(tgt_brw_unlock);
+
+static __u32 tgt_checksum_bulk(struct lu_target *tgt,
+ struct ptlrpc_bulk_desc *desc, int opc,
+ cksum_type_t cksum_type)
+{
+ struct cfs_crypto_hash_desc *hdesc;
+ unsigned int bufsize;
+ int i, err;
+ unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
+ __u32 cksum;
+
+ hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
+ if (IS_ERR(hdesc)) {
+ CERROR("%s: unable to initialize checksum hash %s\n",
+ tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
+ return PTR_ERR(hdesc);
+ }
+
+ CDEBUG(D_INFO, "Checksum for algo %s\n", cfs_crypto_hash_name(cfs_alg));
+ for (i = 0; i < desc->bd_iov_count; i++) {
+ /* corrupt the data before we compute the checksum, to
+ * simulate a client->OST data error */
+ if (i == 0 && opc == OST_WRITE &&
+ OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
+ int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
+ int len = desc->bd_iov[i].kiov_len;
+ struct page *np = tgt_page_to_corrupt;
+ char *ptr = kmap(desc->bd_iov[i].kiov_page) + off;
+
+ if (np) {
+ char *ptr2 = kmap(np) + off;
+
+ memcpy(ptr2, ptr, len);
+ memcpy(ptr2, "bad3", min(4, len));
+ kunmap(np);
+ desc->bd_iov[i].kiov_page = np;
+ } else {
+ CERROR("%s: can't alloc page for corruption\n",
+ tgt_name(tgt));
+ }
+ }
+ cfs_crypto_hash_update_page(hdesc, desc->bd_iov[i].kiov_page,
+ desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK,
+ desc->bd_iov[i].kiov_len);
+
+ /* corrupt the data after we compute the checksum, to
+ * simulate an OST->client data error */
+ if (i == 0 && opc == OST_READ &&
+ OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) {
+ int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
+ int len = desc->bd_iov[i].kiov_len;
+ struct page *np = tgt_page_to_corrupt;
+ char *ptr = kmap(desc->bd_iov[i].kiov_page) + off;
+
+ if (np) {
+ char *ptr2 = kmap(np) + off;
+
+ memcpy(ptr2, ptr, len);
+ memcpy(ptr2, "bad4", min(4, len));
+ kunmap(np);
+ desc->bd_iov[i].kiov_page = np;
+ } else {
+ CERROR("%s: can't alloc page for corruption\n",
+ tgt_name(tgt));
+ }
+ }
+ }
+
+ bufsize = 4;
+ err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
+ if (err)
+ cfs_crypto_hash_final(hdesc, NULL, NULL);
+
+ return cksum;
+}
+
+int tgt_brw_read(struct tgt_session_info *tsi)
+{
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct ptlrpc_bulk_desc *desc = NULL;
+ struct obd_export *exp = tsi->tsi_exp;
+ struct niobuf_remote *remote_nb;
+ struct niobuf_local *local_nb;
+ struct obd_ioobj *ioo;
+ struct ost_body *body, *repbody;
+ struct l_wait_info lwi;
+ struct lustre_handle lockh = { 0 };
+ int niocount, npages, nob = 0, rc, i;
+ int no_reply = 0;
+ struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
+
+ ENTRY;
+
+ if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
+ CERROR("%s: deny read request from %s to portal %u\n",
+ tgt_name(tsi->tsi_tgt),
+ obd_export_nid2str(req->rq_export),
+ ptlrpc_req2svc(req)->srv_req_portal);
+ RETURN(-EPROTO);
+ }
+
+ req->rq_bulk_read = 1;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
+ RETURN(-EIO);
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
+ cfs_fail_val : (obd_timeout + 1) / 4);
+
+ /* Check if there is eviction in progress, and if so, wait for it to
+ * finish */
+ if (unlikely(cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
+ /* We do not care how long it takes */
+ lwi = LWI_INTR(NULL, NULL);
+ rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
+ !cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress),
+ &lwi);
+ }
+
+ /* There must be big cache in current thread to process this request
+ * if it is NULL then something went wrong and it wasn't allocated,
+ * report -ENOMEM in that case */
+ if (tbc == NULL)
+ RETURN(-ENOMEM);
+
+ body = tsi->tsi_ost_body;
+ LASSERT(body != NULL);
+
+ ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
+ LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
+
+ niocount = ioo->ioo_bufcnt;
+ remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
+ LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
+
+ local_nb = tbc->local;
+
+ rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
+ remote_nb, &lockh, LCK_PR);
+ if (rc != 0)
+ RETURN(rc);
+
+ /*
+ * If getting the lock took more time than
+ * client was willing to wait, drop it. b=11330
+ */
+ if (cfs_time_current_sec() > req->rq_deadline ||
+ OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
+ no_reply = 1;
+ CERROR("Dropping timed-out read from %s because locking"
+ "object "DOSTID" took %ld seconds (limit was %ld).\n",
+ libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
+ cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
+ req->rq_deadline - req->rq_arrival_time.tv_sec);
+ GOTO(out_lock, rc = -ETIMEDOUT);
+ }
+
+ repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+ repbody->oa = body->oa;
+
+ npages = PTLRPC_MAX_BRW_PAGES;
+ rc = obd_preprw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1,
+ ioo, remote_nb, &npages, local_nb, NULL, BYPASS_CAPA);
+ if (rc != 0)
+ GOTO(out_lock, rc);
+
+ desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
+ BULK_PUT_SOURCE, OST_BULK_PORTAL);
+ if (desc == NULL)
+ GOTO(out_commitrw, rc = -ENOMEM);
+
+ nob = 0;
+ for (i = 0; i < npages; i++) {
+ int page_rc = local_nb[i].rc;
+
+ if (page_rc < 0) {
+ rc = page_rc;
+ break;
+ }
+
+ nob += page_rc;
+ if (page_rc != 0) { /* some data! */
+ LASSERT(local_nb[i].page != NULL);
+ ptlrpc_prep_bulk_page_nopin(desc, local_nb[i].page,
+ local_nb[i].lnb_page_offset,
+ page_rc);
+ }
+
+ if (page_rc != local_nb[i].len) { /* short read */
+ /* All subsequent pages should be 0 */
+ while (++i < npages)
+ LASSERT(local_nb[i].rc == 0);
+ break;
+ }
+ }
+
+ if (body->oa.o_valid & OBD_MD_FLCKSUM) {
+ cksum_type_t cksum_type =
+ cksum_type_unpack(body->oa.o_valid & OBD_MD_FLFLAGS ?
+ body->oa.o_flags : 0);
+ repbody->oa.o_flags = cksum_type_pack(cksum_type);
+ repbody->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
+ repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
+ OST_READ, cksum_type);
+ CDEBUG(D_PAGE, "checksum at read origin: %x\n",
+ repbody->oa.o_cksum);
+ } else {
+ repbody->oa.o_valid = 0;
+ }
+ /* We're finishing using body->oa as an input variable */
+
+ /* Check if client was evicted while we were doing i/o before touching
+ * network */
+ if (likely(rc == 0 &&
+ !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
+ rc = target_bulk_io(exp, desc, &lwi);
+ no_reply = rc != 0;
+ }
+
+out_commitrw:
+ /* Must commit after prep above in all cases */
+ rc = obd_commitrw(tsi->tsi_env, OBD_BRW_READ, exp,
+ &repbody->oa, 1, ioo, remote_nb, npages, local_nb,
+ NULL, rc);
+ if (rc == 0)
+ tgt_drop_id(exp, &repbody->oa);
+out_lock:
+ tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PR);
+
+ if (desc && !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))
+ ptlrpc_free_bulk_nopin(desc);
+
+ LASSERT(rc <= 0);
+ if (rc == 0) {
+ rc = nob;
+ ptlrpc_lprocfs_brw(req, nob);
+ } else if (no_reply) {
+ req->rq_no_reply = 1;
+ /* reply out callback would free */
+ ptlrpc_req_drop_rs(req);
+ LCONSOLE_WARN("%s: Bulk IO read error with %s (at %s), "
+ "client will retry: rc %d\n",
+ exp->exp_obd->obd_name,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp), rc);
+ }
+ /* send a bulk after reply to simulate a network delay or reordering
+ * by a router */
+ if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
+ wait_queue_head_t waitq;
+ struct l_wait_info lwi1;
+
+ CDEBUG(D_INFO, "reorder BULK\n");
+ init_waitqueue_head(&waitq);
+
+ lwi1 = LWI_TIMEOUT_INTR(cfs_time_seconds(3), NULL, NULL, NULL);
+ l_wait_event(waitq, 0, &lwi1);
+ target_bulk_io(exp, desc, &lwi);
+ ptlrpc_free_bulk_nopin(desc);
+ }
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(tgt_brw_read);
+
+static void tgt_warn_on_cksum(struct ptlrpc_request *req,
+ struct ptlrpc_bulk_desc *desc,
+ struct niobuf_local *local_nb, int npages,
+ obd_count client_cksum, obd_count server_cksum,
+ bool mmap)
+{
+ struct obd_export *exp = req->rq_export;
+ struct ost_body *body;
+ char *router;
+ char *via;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+ LASSERT(body != NULL);
+
+ if (req->rq_peer.nid == desc->bd_sender) {
+ via = router = "";
+ } else {
+ via = " via ";
+ router = libcfs_nid2str(desc->bd_sender);
+ }
+
+ if (mmap) {
+ CDEBUG_LIMIT(D_INFO, "client csum %x, server csum %x\n",
+ client_cksum, server_cksum);
+ return;
+ }
+
+ LCONSOLE_ERROR_MSG(0x168, "BAD WRITE CHECKSUM: %s from %s%s%s inode "
+ DFID" object "DOSTID" extent ["LPU64"-"LPU64
+ "]: client csum %x, server csum %x\n",
+ exp->exp_obd->obd_name, libcfs_id2str(req->rq_peer),
+ via, router,
+ body->oa.o_valid & OBD_MD_FLFID ?
+ body->oa.o_parent_seq : (__u64)0,
+ body->oa.o_valid & OBD_MD_FLFID ?
+ body->oa.o_parent_oid : 0,
+ body->oa.o_valid & OBD_MD_FLFID ?
+ body->oa.o_parent_ver : 0,
+ POSTID(&body->oa.o_oi),
+ local_nb[0].lnb_file_offset,
+ local_nb[npages-1].lnb_file_offset +
+ local_nb[npages-1].len - 1,
+ client_cksum, server_cksum);
+}
+
+int tgt_brw_write(struct tgt_session_info *tsi)
+{
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct ptlrpc_bulk_desc *desc = NULL;
+ struct obd_export *exp = req->rq_export;
+ struct niobuf_remote *remote_nb;
+ struct niobuf_local *local_nb;
+ struct obd_ioobj *ioo;
+ struct ost_body *body, *repbody;
+ struct l_wait_info lwi;
+ struct lustre_handle lockh = {0};
+ __u32 *rcs;
+ int objcount, niocount, npages;
+ int rc, i, j;
+ cksum_type_t cksum_type = OBD_CKSUM_CRC32;
+ bool no_reply = false, mmap;
+ struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
+
+ ENTRY;
+
+ if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
+ CERROR("%s: deny write request from %s to portal %u\n",
+ tgt_name(tsi->tsi_tgt),
+ obd_export_nid2str(req->rq_export),
+ ptlrpc_req2svc(req)->srv_req_portal);
+ RETURN(err_serious(-EPROTO));
+ }
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
+ RETURN(err_serious(-ENOSPC));
+ if (OBD_FAIL_TIMEOUT(OBD_FAIL_OST_EROFS, 1))
+ RETURN(err_serious(-EROFS));
+
+ req->rq_bulk_write = 1;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
+ RETURN(err_serious(-EIO));
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2))
+ RETURN(err_serious(-EFAULT));
+
+ /* pause before transaction has been started */
+ CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
+ cfs_fail_val : (obd_timeout + 1) / 4);
+
+ /* There must be big cache in current thread to process this request
+ * if it is NULL then something went wrong and it wasn't allocated,
+ * report -ENOMEM in that case */
+ if (tbc == NULL)
+ RETURN(-ENOMEM);
+
+ body = tsi->tsi_ost_body;
+ LASSERT(body != NULL);
+
+ ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
+ LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
+
+ objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
+ RCL_CLIENT) / sizeof(*ioo);
+
+ for (niocount = i = 0; i < objcount; i++)
+ niocount += ioo[i].ioo_bufcnt;
+
+ remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
+ LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
+ if (niocount != req_capsule_get_size(&req->rq_pill,
+ &RMF_NIOBUF_REMOTE, RCL_CLIENT) /
+ sizeof(*remote_nb))
+ RETURN(err_serious(-EPROTO));
+
+ if ((remote_nb[0].flags & OBD_BRW_MEMALLOC) &&
+ (exp->exp_connection->c_peer.nid == exp->exp_connection->c_self))
+ memory_pressure_set();
+
+ req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER,
+ niocount * sizeof(*rcs));
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc != 0)
+ GOTO(out, rc = err_serious(rc));
+
+ CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, cfs_fail_val);
+ rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
+
+ local_nb = tbc->local;
+
+ rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
+ remote_nb, &lockh, LCK_PW);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ /*
+ * If getting the lock took more time than
+ * client was willing to wait, drop it. b=11330
+ */
+ if (cfs_time_current_sec() > req->rq_deadline ||
+ OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
+ no_reply = true;
+ CERROR("%s: Dropping timed-out write from %s because locking "
+ "object "DOSTID" took %ld seconds (limit was %ld).\n",
+ tgt_name(tsi->tsi_tgt), libcfs_id2str(req->rq_peer),
+ POSTID(&ioo->ioo_oid),
+ cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
+ req->rq_deadline - req->rq_arrival_time.tv_sec);
+ GOTO(out_lock, rc = -ETIMEDOUT);
+ }
+
+ /* Because we already sync grant info with client when reconnect,
+ * grant info will be cleared for resent req, then fed_grant and
+ * total_grant will not be modified in following preprw_write */
+ if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
+ DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info");
+ body->oa.o_valid &= ~OBD_MD_FLGRANT;
+ }
+
+ repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+ if (repbody == NULL)
+ GOTO(out_lock, rc = -ENOMEM);
+ repbody->oa = body->oa;
+
+ npages = PTLRPC_MAX_BRW_PAGES;
+ rc = obd_preprw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
+ objcount, ioo, remote_nb, &npages, local_nb, NULL,
+ BYPASS_CAPA);
+ if (rc < 0)
+ GOTO(out_lock, rc);
+
+ desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
+ BULK_GET_SINK, OST_BULK_PORTAL);
+ if (desc == NULL)
+ GOTO(skip_transfer, rc = -ENOMEM);
+
+ /* NB Having prepped, we must commit... */
+ for (i = 0; i < npages; i++)
+ ptlrpc_prep_bulk_page_nopin(desc, local_nb[i].page,
+ local_nb[i].lnb_page_offset,
+ local_nb[i].len);
+
+ rc = sptlrpc_svc_prep_bulk(req, desc);
+ if (rc != 0)
+ GOTO(skip_transfer, rc);
+
+ rc = target_bulk_io(exp, desc, &lwi);
+ no_reply = rc != 0;
+
+skip_transfer:
+ if (body->oa.o_valid & OBD_MD_FLCKSUM && rc == 0) {
+ static int cksum_counter;
+
+ if (body->oa.o_valid & OBD_MD_FLFLAGS)
+ cksum_type = cksum_type_unpack(body->oa.o_flags);
+
+ repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
+ repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL;
+ repbody->oa.o_flags |= cksum_type_pack(cksum_type);
+ repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
+ OST_WRITE, cksum_type);
+ cksum_counter++;
+
+ if (unlikely(body->oa.o_cksum != repbody->oa.o_cksum)) {
+ mmap = (body->oa.o_valid & OBD_MD_FLFLAGS &&
+ body->oa.o_flags & OBD_FL_MMAP);
+
+ tgt_warn_on_cksum(req, desc, local_nb, npages,
+ body->oa.o_cksum,
+ repbody->oa.o_cksum, mmap);
+ cksum_counter = 0;
+ } else if ((cksum_counter & (-cksum_counter)) ==
+ cksum_counter) {
+ CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
+ cksum_counter, libcfs_id2str(req->rq_peer),
+ repbody->oa.o_cksum);
+ }
+ }
+
+ /* Must commit after prep above in all cases */
+ rc = obd_commitrw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
+ objcount, ioo, remote_nb, npages, local_nb, NULL,
+ rc);
+ if (rc == -ENOTCONN)
+ /* quota acquire process has been given up because
+ * either the client has been evicted or the client
+ * has timed out the request already */
+ no_reply = true;
+
+ /*
+ * Disable sending mtime back to the client. If the client locked the
+ * whole object, then it has already updated the mtime on its side,
+ * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
+ */
+ repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
+
+ if (rc == 0) {
+ int nob = 0;
+
+ /* set per-requested niobuf return codes */
+ for (i = j = 0; i < niocount; i++) {
+ int len = remote_nb[i].len;
+
+ nob += len;
+ rcs[i] = 0;
+ do {
+ LASSERT(j < npages);
+ if (local_nb[j].rc < 0)
+ rcs[i] = local_nb[j].rc;
+ len -= local_nb[j].len;
+ j++;
+ } while (len > 0);
+ LASSERT(len == 0);
+ }
+ LASSERT(j == npages);
+ ptlrpc_lprocfs_brw(req, nob);
+
+ tgt_drop_id(exp, &repbody->oa);
+ }
+out_lock:
+ tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PW);
+ if (desc)
+ ptlrpc_free_bulk_nopin(desc);
+out:
+ if (no_reply) {
+ req->rq_no_reply = 1;
+ /* reply out callback would free */
+ ptlrpc_req_drop_rs(req);
+ LCONSOLE_WARN("%s: Bulk IO write error with %s (at %s), "
+ "client will retry: rc %d\n",
+ exp->exp_obd->obd_name,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp), rc);
+ }
+ memory_pressure_clr();
+ RETURN(rc);
+}
+EXPORT_SYMBOL(tgt_brw_write);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff