*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/ofd/ofd_io.c
*
- * Author: Alex Tomas <bzzz@whamcloud.com>
+ * This file provides functions to handle IO requests from clients and
+ * also LFSCK routines to check parent file identifier (PFID) consistency.
+ *
+ * Author: Alexey Zhuravlev <alexey.zhuravlev@intel.com>
+ * Author: Fan Yong <fan.yong@intel.com>
*/
#define DEBUG_SUBSYSTEM S_FILTER
+#include <linux/kthread.h>
#include "ofd_internal.h"
+#include <lustre_nodemap.h>
+
+struct ofd_inconsistency_item {
+ struct list_head oii_list;
+ struct ofd_object *oii_obj;
+ struct filter_fid oii_ff;
+};
+
+/**
+ * Verify single object for parent FID consistency.
+ *
+ * Part of LFSCK processing which checks single object PFID stored in extended
+ * attribute (XATTR) against real FID of MDT parent object received by LFSCK.
+ * This verifies that the OST object is being referenced by only a single MDT
+ * object.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ * \param[in] oii object-related local data
+ * \param[in] lrl LFSCK request data
+ */
+static void ofd_inconsistency_verify_one(const struct lu_env *env,
+ struct ofd_device *ofd,
+ struct ofd_inconsistency_item *oii,
+ struct lfsck_req_local *lrl)
+{
+ struct ofd_object *fo = oii->oii_obj;
+ struct filter_fid *client_ff = &oii->oii_ff;
+ struct filter_fid *local_ff = &fo->ofo_ff;
+ int rc;
+
+ LASSERT(fo->ofo_pfid_checking);
+ LASSERT(!fo->ofo_pfid_verified);
+
+ lrl->lrl_fid = fo->ofo_header.loh_fid; /* OST-object itself FID. */
+ lrl->lrl_ff_client = *client_ff; /* client given PFID. */
+ lrl->lrl_ff_local = *local_ff; /* OST local stored PFID. */
+
+ rc = lfsck_in_notify_local(env, ofd->ofd_osd, lrl, NULL);
+ ofd_write_lock(env, fo);
+ switch (lrl->lrl_status) {
+ case LPVS_INIT:
+ LASSERT(rc <= 0);
+
+ if (rc < 0)
+ CDEBUG(D_LFSCK, "%s: fail to verify OST local stored "
+ "PFID xattr for "DFID", the client given PFID "
+ DFID", OST local stored PFID "DFID": rc = %d\n",
+ ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
+ PFID(&client_ff->ff_parent),
+ PFID(&local_ff->ff_parent), rc);
+ else
+ fo->ofo_pfid_verified = 1;
+ break;
+ case LPVS_INCONSISTENT:
+ LASSERT(rc != 0);
+
+ ofd->ofd_inconsistency_self_detected++;
+ if (rc < 0)
+ CDEBUG(D_LFSCK, "%s: fail to verify the client given "
+ "PFID for "DFID", the client given PFID "DFID
+ ", local stored PFID "DFID": rc = %d\n",
+ ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
+ PFID(&client_ff->ff_parent),
+ PFID(&local_ff->ff_parent), rc);
+ else
+ CDEBUG(D_LFSCK, "%s: both the client given PFID and "
+ "the OST local stored PFID are stale for the "
+ "OST-object "DFID", client given PFID is "DFID
+ ", local stored PFID is "DFID"\n",
+ ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
+ PFID(&client_ff->ff_parent),
+ PFID(&local_ff->ff_parent));
+ break;
+ case LPVS_INCONSISTENT_TOFIX:
+ ofd->ofd_inconsistency_self_detected++;
+ if (rc == 0) {
+ ofd->ofd_inconsistency_self_repaired++;
+ CDEBUG(D_LFSCK, "%s: fixed the staled OST PFID xattr "
+ "for "DFID", with the client given PFID "DFID
+ ", the old stored PFID "DFID"\n",
+ ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
+ PFID(&client_ff->ff_parent),
+ PFID(&local_ff->ff_parent));
+ } else if (rc < 0) {
+ CDEBUG(D_LFSCK, "%s: fail to fix the OST PFID xattr "
+ "for "DFID", client given PFID "DFID", local "
+ "stored PFID "DFID": rc = %d\n",
+ ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
+ PFID(&client_ff->ff_parent),
+ PFID(&local_ff->ff_parent), rc);
+ }
+ local_ff->ff_parent = client_ff->ff_parent;
+ fo->ofo_pfid_verified = 1;
+ break;
+ default:
+ break;
+ }
+ fo->ofo_pfid_checking = 0;
+ ofd_write_unlock(env, fo);
+
+ ofd_object_put(env, fo);
+ OBD_FREE_PTR(oii);
+}
+
+struct oivm_args {
+ struct ofd_device *od_ofd;
+ struct lu_env od_env;
+ struct lfsck_req_local od_lrl;
+ struct completion *od_started;
+};
+
+#ifndef TASK_IDLE
+#define TASK_IDLE TASK_INTERRUPTIBLE
+#endif
+
+/**
+ * Verification thread to check parent FID consistency.
+ *
+ * Kernel thread to check consistency of parent FID for any
+ * new item added for checking by ofd_add_inconsistency_item().
+ *
+ * \param[in] args OFD device
+ *
+ * \retval 0 on successful thread termination
+ * \retval negative value if thread can't start
+ */
+static int ofd_inconsistency_verification_main(void *_args)
+{
+ struct oivm_args *args = _args;
+ struct lu_env *env = &args->od_env;
+ struct ofd_device *ofd = args->od_ofd;
+ struct ofd_inconsistency_item *oii;
+ struct lfsck_req_local *lrl = &args->od_lrl;
+ ENTRY;
+
+ lrl->lrl_event = LEL_PAIRS_VERIFY_LOCAL;
+ lrl->lrl_active = LFSCK_TYPE_LAYOUT;
+ complete(args->od_started);
+
+ spin_lock(&ofd->ofd_inconsistency_lock);
+ while (({set_current_state(TASK_IDLE);
+ !kthread_should_stop(); })) {
+
+ while (!list_empty(&ofd->ofd_inconsistency_list)) {
+ __set_current_state(TASK_RUNNING);
+ oii = list_entry(ofd->ofd_inconsistency_list.next,
+ struct ofd_inconsistency_item,
+ oii_list);
+ list_del_init(&oii->oii_list);
+ spin_unlock(&ofd->ofd_inconsistency_lock);
+ ofd_inconsistency_verify_one(env, ofd, oii, lrl);
+ spin_lock(&ofd->ofd_inconsistency_lock);
+ }
+
+ spin_unlock(&ofd->ofd_inconsistency_lock);
+ schedule();
+ spin_lock(&ofd->ofd_inconsistency_lock);
+ }
+ __set_current_state(TASK_RUNNING);
+
+ while (!list_empty(&ofd->ofd_inconsistency_list)) {
+ struct ofd_object *fo;
+
+ oii = list_entry(ofd->ofd_inconsistency_list.next,
+ struct ofd_inconsistency_item,
+ oii_list);
+ list_del_init(&oii->oii_list);
+ fo = oii->oii_obj;
+ spin_unlock(&ofd->ofd_inconsistency_lock);
+
+ ofd_write_lock(env, fo);
+ fo->ofo_pfid_checking = 0;
+ ofd_write_unlock(env, fo);
+
+ ofd_object_put(env, fo);
+ OBD_FREE_PTR(oii);
+ spin_lock(&ofd->ofd_inconsistency_lock);
+ }
+
+ spin_unlock(&ofd->ofd_inconsistency_lock);
+
+ lu_env_fini(&args->od_env);
+ OBD_FREE_PTR(args);
+ return 0;
+}
+
+/**
+ * Start parent FID verification thread.
+ *
+ * See ofd_inconsistency_verification_main().
+ *
+ * \param[in] ofd OFD device
+ *
+ * \retval 0 on successful start of thread
+ * \retval negative value on error
+ */
+int ofd_start_inconsistency_verification_thread(struct ofd_device *ofd)
+{
+ struct task_struct *task;
+ struct oivm_args *args;
+ DECLARE_COMPLETION_ONSTACK(started);
+ int rc;
+
+ if (ofd->ofd_inconsistency_task)
+ return -EALREADY;
+
+ OBD_ALLOC_PTR(args);
+ if (!args)
+ return -ENOMEM;
+ rc = lu_env_init(&args->od_env, LCT_DT_THREAD);
+ if (rc) {
+ OBD_FREE_PTR(args);
+ return rc;
+ }
+
+ args->od_ofd = ofd;
+ args->od_started = &started;
+ task = kthread_create(ofd_inconsistency_verification_main, args,
+ "inconsistency_verification");
+ if (IS_ERR(task)) {
+ rc = PTR_ERR(task);
+ CERROR("%s: cannot start self_repair thread: rc = %d\n",
+ ofd_name(ofd), rc);
+ } else {
+ rc = 0;
+ spin_lock(&ofd->ofd_inconsistency_lock);
+ if (ofd->ofd_inconsistency_task)
+ rc = -EALREADY;
+ else
+ ofd->ofd_inconsistency_task = task;
+ spin_unlock(&ofd->ofd_inconsistency_lock);
+
+ if (rc)
+ kthread_stop(task);
+ else {
+ wake_up_process(task);
+ wait_for_completion(&started);
+ }
+ }
+ if (rc) {
+ lu_env_fini(&args->od_env);
+ OBD_FREE_PTR(args);
+ }
+
+ return rc;
+}
+
+/**
+ * Stop parent FID verification thread.
+ *
+ * \param[in] ofd OFD device
+ *
+ * \retval 0 on successful start of thread
+ * \retval -EALREADY if thread is already stopped
+ */
+int ofd_stop_inconsistency_verification_thread(struct ofd_device *ofd)
+{
+ struct task_struct *task;
+
+ spin_lock(&ofd->ofd_inconsistency_lock);
+ task = ofd->ofd_inconsistency_task;
+ ofd->ofd_inconsistency_task = NULL;
+ spin_unlock(&ofd->ofd_inconsistency_lock);
+
+ if (!task)
+ return -EALREADY;
+ kthread_stop(task);
+
+ return 0;
+}
+
+/**
+ * Add new item for parent FID verification.
+ *
+ * Prepare new verification item and pass it to the dedicated
+ * verification thread for further processing.
+ *
+ * \param[in] env execution environment
+ * \param[in] fo OFD object
+ * \param[in] oa OBDO structure with PFID
+ */
+static void ofd_add_inconsistency_item(const struct lu_env *env,
+ struct ofd_object *fo, struct obdo *oa)
+{
+ struct ofd_device *ofd = ofd_obj2dev(fo);
+ struct ofd_inconsistency_item *oii;
+ struct filter_fid *ff;
+ bool wakeup = false;
+
+ OBD_ALLOC_PTR(oii);
+ if (oii == NULL)
+ return;
+
+ INIT_LIST_HEAD(&oii->oii_list);
+ lu_object_get(&fo->ofo_obj.do_lu);
+ oii->oii_obj = fo;
+ ff = &oii->oii_ff;
+ ff->ff_parent.f_seq = oa->o_parent_seq;
+ ff->ff_parent.f_oid = oa->o_parent_oid;
+ ff->ff_parent.f_stripe_idx = oa->o_stripe_idx;
+ ff->ff_layout = oa->o_layout;
+
+ spin_lock(&ofd->ofd_inconsistency_lock);
+ if (fo->ofo_pfid_checking || fo->ofo_pfid_verified) {
+ spin_unlock(&ofd->ofd_inconsistency_lock);
+ OBD_FREE_PTR(oii);
+
+ return;
+ }
+
+ fo->ofo_pfid_checking = 1;
+ if (list_empty(&ofd->ofd_inconsistency_list))
+ wakeup = true;
+ list_add_tail(&oii->oii_list, &ofd->ofd_inconsistency_list);
+ if (wakeup && ofd->ofd_inconsistency_task)
+ wake_up_process(ofd->ofd_inconsistency_task);
+ spin_unlock(&ofd->ofd_inconsistency_lock);
+
+ /* XXX: When the found inconsistency exceeds some threshold,
+ * we can trigger the LFSCK to scan part of the system
+ * or the whole system, which depends on how to define
+ * the threshold, a simple way maybe like that: define
+ * the absolute value of how many inconsisteny allowed
+ * to be repaired via self detect/repair mechanism, if
+ * exceeded, then trigger the LFSCK to scan the layout
+ * inconsistency within the whole system. */
+}
+
+/**
+ * Verify parent FID of an object.
+ *
+ * Check the parent FID is sane and start extended
+ * verification procedure otherwise.
+ *
+ * \param[in] env execution environment
+ * \param[in] fo OFD object
+ * \param[in] oa OBDO structure with PFID
+ *
+ * \retval 0 on successful verification
+ * \retval -EINPROGRESS if PFID is being repaired
+ * \retval -EPERM if PFID was verified but still insane
+ */
+int ofd_verify_ff(const struct lu_env *env, struct ofd_object *fo,
+ struct obdo *oa)
+{
+ struct lu_fid *pfid = &fo->ofo_ff.ff_parent;
+ int rc = 0;
+ ENTRY;
+
+ if (fid_is_sane(pfid)) {
+ if (likely(oa->o_parent_seq == pfid->f_seq &&
+ oa->o_parent_oid == pfid->f_oid &&
+ oa->o_stripe_idx == pfid->f_stripe_idx))
+ RETURN(0);
+
+ if (fo->ofo_pfid_verified)
+ RETURN(-EPERM);
+ }
+
+ /* The OST-object may be inconsistent, and we need further verification.
+ * To avoid block the RPC service thread, return -EINPROGRESS to client
+ * and make it retry later. */
+ if (fo->ofo_pfid_checking)
+ RETURN(-EINPROGRESS);
+
+ rc = ofd_object_ff_load(env, fo);
+ if (rc == -ENODATA)
+ RETURN(0);
+
+ if (rc < 0)
+ RETURN(rc);
+
+ if (likely(oa->o_parent_seq == pfid->f_seq &&
+ oa->o_parent_oid == pfid->f_oid &&
+ oa->o_stripe_idx == pfid->f_stripe_idx))
+ RETURN(0);
+ /* Push it to the dedicated thread for further verification. */
+ ofd_add_inconsistency_item(env, fo, oa);
+
+ RETURN(-EINPROGRESS);
+}
+
+/**
+ * FLR: verify the layout version of object.
+ *
+ * \param[in] env execution environment
+ * \param[in] fo OFD object
+ * \param[in] oa OBDO structure with layout version
+ *
+ * \retval 0 on successful verification
+ * \retval -EINPROGRESS layout version is in transfer
+ * \retval -ESTALE the layout version on client is stale
+ */
+int ofd_verify_layout_version(const struct lu_env *env,
+ struct ofd_object *fo, const struct obdo *oa)
+{
+ __u32 layout_version;
+ int rc;
+ ENTRY;
+
+ if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_OST_SKIP_LV_CHECK)))
+ GOTO(out, rc = 0);
+
+ rc = ofd_object_ff_load(env, fo);
+ if (rc < 0) {
+ if (rc == -ENODATA)
+ rc = -EINPROGRESS;
+ GOTO(out, rc);
+ }
+
+ layout_version = fo->ofo_ff.ff_layout_version;
+ if (oa->o_layout_version >= layout_version &&
+ oa->o_layout_version <= layout_version + fo->ofo_ff.ff_range)
+ GOTO(out, rc = 0);
+
+ /* normal traffic, decide if to return ESTALE or EINPROGRESS */
+ layout_version &= ~LU_LAYOUT_RESYNC;
+
+ /* this update is not legitimate */
+ if ((oa->o_layout_version & ~LU_LAYOUT_RESYNC) <= layout_version)
+ GOTO(out, rc = -ESTALE);
+
+ /* layout version may not be transmitted yet */
+ if ((oa->o_layout_version & ~LU_LAYOUT_RESYNC) > layout_version)
+ GOTO(out, rc = -EINPROGRESS);
+
+ EXIT;
+
+out:
+ CDEBUG(D_INODE, DFID " verify layout version: %u vs. %u/%u, rc: %d\n",
+ PFID(lu_object_fid(&fo->ofo_obj.do_lu)),
+ oa->o_layout_version, fo->ofo_ff.ff_layout_version,
+ fo->ofo_ff.ff_range, rc);
+ return rc;
+
+}
+
+/*
+ * Lazy ATIME update to refresh atime every ofd_atime_diff
+ * seconds so that external scanning tool can see it actual
+ * within that period and be able to identify accessed files
+ */
+static void ofd_handle_atime(const struct lu_env *env, struct ofd_device *ofd,
+ struct ofd_object *fo, time64_t atime)
+{
+ struct lu_attr *la;
+ struct dt_object *o;
+ struct thandle *th;
+ int rc;
+
+ if (ofd->ofd_atime_diff == 0)
+ return;
+
+ la = &ofd_info(env)->fti_attr2;
+ o = ofd_object_child(fo);
+
+ if (unlikely(fo->ofo_atime_ondisk == 0)) {
+ rc = dt_attr_get(env, o, la);
+ if (unlikely(rc))
+ return;
+ LASSERT(la->la_valid & LA_ATIME);
+ if (la->la_atime == 0)
+ la->la_atime = la->la_mtime;
+ fo->ofo_atime_ondisk = la->la_atime;
+ }
+ if (atime - fo->ofo_atime_ondisk < ofd->ofd_atime_diff)
+ return;
+
+ /* atime hasn't been updated too long, update it */
+ fo->ofo_atime_ondisk = atime;
+
+ th = ofd_trans_create(env, ofd);
+ if (IS_ERR(th)) {
+ CERROR("%s: cannot create transaction: rc = %d\n",
+ ofd_name(ofd), (int)PTR_ERR(th));
+ return;
+ }
+
+ la->la_valid = LA_ATIME;
+ rc = dt_declare_attr_set(env, o, la, th);
+ if (rc)
+ GOTO(out_tx, rc);
+
+ rc = dt_trans_start_local(env, ofd->ofd_osd , th);
+ if (rc) {
+ CERROR("%s: cannot start transaction: rc = %d\n",
+ ofd_name(ofd), rc);
+ GOTO(out_tx, rc);
+ }
+
+ ofd_read_lock(env, fo);
+ if (ofd_object_exists(fo)) {
+ la->la_atime = fo->ofo_atime_ondisk;
+ rc = dt_attr_set(env, o, la, th);
+ }
+
+ ofd_read_unlock(env, fo);
+
+out_tx:
+ ofd_trans_stop(env, ofd, th, rc);
+}
+
+/**
+ * Prepare buffers for read request processing.
+ *
+ * This function converts remote buffers from client to local buffers
+ * and prepares the latter.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of client
+ * \param[in] ofd OFD device
+ * \param[in] fid FID of object
+ * \param[in] la object attributes
+ * \param[in] oa OBDO structure from client
+ * \param[in] niocount number of remote buffers
+ * \param[in] rnb remote buffers
+ * \param[in] nr_local number of local buffers
+ * \param[in] lnb local buffers
+ * \param[in] jobid job ID name
+ *
+ * \retval 0 on successful prepare
+ * \retval negative value on error
+ */
static int ofd_preprw_read(const struct lu_env *env, struct obd_export *exp,
- struct ofd_device *ofd, struct lu_fid *fid,
- struct lu_attr *la, int niocount,
+ struct ofd_device *ofd, const struct lu_fid *fid,
+ struct lu_attr *la, struct obdo *oa, int niocount,
struct niobuf_remote *rnb, int *nr_local,
- struct niobuf_local *lnb,
- struct obd_trans_info *oti)
+ struct niobuf_local *lnb)
{
- struct ofd_object *fo;
- int i, j, rc, tot_bytes = 0;
+ struct ofd_object *fo;
+ int i, j, rc, tot_bytes = 0;
+ enum dt_bufs_type dbt = DT_BUFS_TYPE_READ;
+ int maxlnb = *nr_local;
+ __u64 begin, end;
ENTRY;
LASSERT(env != NULL);
RETURN(PTR_ERR(fo));
LASSERT(fo != NULL);
+ ofd_info(env)->fti_obj = fo;
+
+ if (oa->o_valid & OBD_MD_FLATIME)
+ ofd_handle_atime(env, ofd, fo, oa->o_atime);
+
ofd_read_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
- /* parse remote buffers to local buffers and prepare the latter */
- for (i = 0, j = 0; i < niocount; i++) {
+ if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
+ rc = ofd_verify_ff(env, fo, oa);
+ if (rc != 0)
+ GOTO(unlock, rc);
+ }
+
+ if (ptlrpc_connection_is_local(exp->exp_connection))
+ dbt |= DT_BUFS_TYPE_LOCAL;
+
+ begin = -1;
+ end = 0;
+
+ for (*nr_local = 0, i = 0, j = 0; i < niocount; i++) {
+ begin = min_t(__u64, begin, rnb[i].rnb_offset);
+ end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
+ rnb[i].rnb_len = 100 * 1024 * 1024;
+
rc = dt_bufs_get(env, ofd_object_child(fo), rnb + i,
- lnb + j, 0, ofd_object_capa(env, fo));
- LASSERT(rc > 0);
+ lnb + j, maxlnb, dbt);
+ if (unlikely(rc < 0))
+ GOTO(buf_put, rc);
LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
/* correct index for local buffers to continue with */
j += rc;
+ *nr_local += rc;
+ maxlnb -= rc;
LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
tot_bytes += rnb[i].rnb_len;
}
- *nr_local = j;
LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
- rc = dt_attr_get(env, ofd_object_child(fo), la,
- ofd_object_capa(env, fo));
- if (unlikely(rc))
- GOTO(buf_put, rc);
-
rc = dt_read_prep(env, ofd_object_child(fo), lnb, *nr_local);
if (unlikely(rc))
GOTO(buf_put, rc);
- lprocfs_counter_add(ofd_obd(ofd)->obd_stats,
- LPROC_OFD_READ_BYTES, tot_bytes);
- ofd_counter_incr(exp, LPROC_OFD_STATS_READ,
- oti->oti_jobid, tot_bytes);
+ ofd_read_unlock(env, fo);
+
+ ofd_access(env, ofd,
+ &(struct lu_fid) {
+ .f_seq = oa->o_parent_seq,
+ .f_oid = oa->o_parent_oid,
+ .f_ver = oa->o_stripe_idx,
+ },
+ begin, end,
+ tot_bytes,
+ niocount,
+ READ);
+
RETURN(0);
buf_put:
return rc;
}
+/**
+ * Prepare buffers for write request processing.
+ *
+ * This function converts remote buffers from client to local buffers
+ * and prepares the latter. If there is recovery in progress and required
+ * object is missing then it can be re-created before write.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of client
+ * \param[in] ofd OFD device
+ * \param[in] fid FID of object
+ * \param[in] la object attributes
+ * \param[in] oa OBDO structure from client
+ * \param[in] objcount always 1
+ * \param[in] obj object data
+ * \param[in] rnb remote buffers
+ * \param[in] nr_local number of local buffers
+ * \param[in] lnb local buffers
+ * \param[in] jobid job ID name
+ *
+ * \retval 0 on successful prepare
+ * \retval negative value on error
+ */
static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
- struct ofd_device *ofd, struct lu_fid *fid,
+ struct ofd_device *ofd, const struct lu_fid *fid,
struct lu_attr *la, struct obdo *oa,
int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int *nr_local,
- struct niobuf_local *lnb,
- struct obd_trans_info *oti)
+ struct niobuf_local *lnb)
{
- struct ofd_object *fo;
- int i, j, k, rc = 0, tot_bytes = 0;
+ struct ofd_object *fo;
+ int i, j, k, rc = 0, tot_bytes = 0;
+ enum dt_bufs_type dbt = DT_BUFS_TYPE_WRITE;
+ int maxlnb = *nr_local;
+ __u64 begin, end;
ENTRY;
LASSERT(env != NULL);
LASSERT(objcount == 1);
if (unlikely(exp->exp_obd->obd_recovering)) {
- struct ofd_thread_info *info = ofd_info(env);
-
- /* copied from ofd_precreate_object */
- /* XXX this should be consolidated to use the same code
- * instead of a copy, due to the ongoing risk of bugs. */
- memset(&info->fti_attr, 0, sizeof(info->fti_attr));
- info->fti_attr.la_valid = LA_TYPE | LA_MODE;
- info->fti_attr.la_mode = S_IFREG | S_ISUID | S_ISGID | 0666;
- info->fti_attr.la_valid |= LA_ATIME | LA_MTIME | LA_CTIME;
- /* Initialize a/c/m time so any client timestamp will always
- * be newer and update the inode. ctime = 0 is also handled
- * specially in osd_inode_setattr(). See LU-221, LU-1042 */
- info->fti_attr.la_atime = 0;
- info->fti_attr.la_mtime = 0;
- info->fti_attr.la_ctime = 0;
-
- fo = ofd_object_find_or_create(env, ofd, fid, &info->fti_attr);
- } else {
- fo = ofd_object_find(env, ofd, fid);
+ u64 seq = ostid_seq(&oa->o_oi);
+ u64 oid = ostid_id(&oa->o_oi);
+ struct ofd_seq *oseq;
+
+ oseq = ofd_seq_load(env, ofd, seq);
+ if (IS_ERR(oseq)) {
+ CERROR("%s: Can't find FID Sequence %#llx: rc = %d\n",
+ ofd_name(ofd), seq, (int)PTR_ERR(oseq));
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (oid > ofd_seq_last_oid(oseq)) {
+ int sync = 0;
+ int diff;
+
+ mutex_lock(&oseq->os_create_lock);
+ diff = oid - ofd_seq_last_oid(oseq);
+
+ /* Do sync create if the seq is about to used up */
+ if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
+ if (unlikely(oid >= IDIF_MAX_OID - 1))
+ sync = 1;
+ } else if (fid_seq_is_norm(seq)) {
+ if (unlikely(oid >=
+ LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
+ sync = 1;
+ } else {
+ CERROR("%s : invalid o_seq "DOSTID"\n",
+ ofd_name(ofd), POSTID(&oa->o_oi));
+ mutex_unlock(&oseq->os_create_lock);
+ ofd_seq_put(env, oseq);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ while (diff > 0) {
+ u64 next_id = ofd_seq_last_oid(oseq) + 1;
+ int count = ofd_precreate_batch(ofd, diff);
+
+ rc = ofd_precreate_objects(env, ofd, next_id,
+ oseq, count, sync);
+ if (rc < 0) {
+ mutex_unlock(&oseq->os_create_lock);
+ ofd_seq_put(env, oseq);
+ GOTO(out, rc);
+ }
+
+ diff -= rc;
+ }
+
+ mutex_unlock(&oseq->os_create_lock);
+ }
+
+ ofd_seq_put(env, oseq);
}
+ /* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
+ * space back if possible, we have to do this outside of the lock as
+ * grant preparation may need to sync whole fs thus wait for all the
+ * transactions to complete. */
+ tgt_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
+
+ fo = ofd_object_find(env, ofd, fid);
if (IS_ERR(fo))
GOTO(out, rc = PTR_ERR(fo));
LASSERT(fo != NULL);
- ofd_read_lock(env, fo);
+ ofd_info(env)->fti_obj = fo;
+
if (!ofd_object_exists(fo)) {
CERROR("%s: BRW to missing obj "DOSTID"\n",
exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
- ofd_read_unlock(env, fo);
ofd_object_put(env, fo);
GOTO(out, rc = -ENOENT);
}
- /* Always sync if syncjournal parameter is set */
- oti->oti_sync_write = ofd->ofd_syncjournal;
+ if (ptlrpc_connection_is_local(exp->exp_connection))
+ dbt |= DT_BUFS_TYPE_LOCAL;
- /* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
- * space back if possible */
- ofd_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
+ begin = -1;
+ end = 0;
/* parse remote buffers to local buffers and prepare the latter */
- for (i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
+ for (*nr_local = 0, i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
+ begin = min_t(__u64, begin, rnb[i].rnb_offset);
+ end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
+ rnb[i].rnb_len += PAGE_SIZE;
rc = dt_bufs_get(env, ofd_object_child(fo),
- rnb + i, lnb + j, 1,
- ofd_object_capa(env, fo));
- LASSERT(rc > 0);
+ rnb + i, lnb + j, maxlnb, dbt);
+ if (unlikely(rc < 0))
+ GOTO(err_nolock, rc);
LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
/* correct index for local buffers to continue with */
for (k = 0; k < rc; k++) {
lnb[j+k].lnb_flags = rnb[i].rnb_flags;
+ lnb[j+k].lnb_flags &= ~OBD_BRW_LOCALS;
if (!(rnb[i].rnb_flags & OBD_BRW_GRANTED))
lnb[j+k].lnb_rc = -ENOSPC;
- if (!(rnb[i].rnb_flags & OBD_BRW_ASYNC))
- oti->oti_sync_write = 1;
- /* remote client can't break through quota */
- if (exp_connect_rmtclient(exp))
- lnb[j+k].lnb_flags &= ~OBD_BRW_NOQUOTA;
}
j += rc;
+ *nr_local += rc;
+ maxlnb -= rc;
LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
tot_bytes += rnb[i].rnb_len;
}
- *nr_local = j;
LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
- rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
- if (unlikely(rc != 0)) {
- dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
- ofd_read_unlock(env, fo);
- /* ofd_grant_prepare_write() was called, so we must commit */
- ofd_grant_commit(env, exp, rc);
- GOTO(out, rc);
+ ofd_read_lock(env, fo);
+ if (!ofd_object_exists(fo)) {
+ CERROR("%s: BRW to missing obj "DOSTID": rc = -ENOENT\n",
+ exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
+ GOTO(err, rc = -ENOENT);
+ }
+
+ if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
+ rc = ofd_verify_ff(env, fo, oa);
+ if (rc != 0)
+ GOTO(err, rc);
}
- lprocfs_counter_add(ofd_obd(ofd)->obd_stats,
- LPROC_OFD_WRITE_BYTES, tot_bytes);
- ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE,
- oti->oti_jobid, tot_bytes);
+ /* need to verify layout version */
+ if (oa->o_valid & OBD_MD_LAYOUT_VERSION) {
+ rc = ofd_verify_layout_version(env, fo, oa);
+ if (rc)
+ GOTO(err, rc);
+ oa->o_valid &= ~OBD_MD_LAYOUT_VERSION;
+ }
+
+ rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
+ if (unlikely(rc != 0))
+ GOTO(err, rc);
+
+ ofd_read_unlock(env, fo);
+
+ ofd_access(env, ofd,
+ &(struct lu_fid) {
+ .f_seq = oa->o_parent_seq,
+ .f_oid = oa->o_parent_oid,
+ .f_ver = oa->o_stripe_idx,
+ },
+ begin, end,
+ tot_bytes,
+ obj->ioo_bufcnt,
+ WRITE);
+
RETURN(0);
+
+err:
+ ofd_read_unlock(env, fo);
+err_nolock:
+ dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
+ ofd_object_put(env, fo);
+ /* tgt_grant_prepare_write() was called, so we must commit */
+ tgt_grant_commit(exp, oa->o_grant_used, rc);
out:
/* let's still process incoming grant information packed in the oa,
* but without enforcing grant since we won't proceed with the write.
* Just like a read request actually. */
- ofd_grant_prepare_read(env, exp, oa);
+ tgt_grant_prepare_read(env, exp, oa);
return rc;
}
-int ofd_preprw(const struct lu_env* env, int cmd, struct obd_export *exp,
+/**
+ * Prepare bulk IO requests for processing.
+ *
+ * This function does initial checks of IO and calls corresponding
+ * functions for read/write processing.
+ *
+ * \param[in] env execution environment
+ * \param[in] cmd IO type (read/write)
+ * \param[in] exp OBD export of client
+ * \param[in] oa OBDO structure from request
+ * \param[in] objcount always 1
+ * \param[in] obj object data
+ * \param[in] rnb remote buffers
+ * \param[in] nr_local number of local buffers
+ * \param[in] lnb local buffers
+ *
+ * \retval 0 on successful prepare
+ * \retval negative value on error
+ */
+int ofd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
struct obdo *oa, int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int *nr_local,
- struct niobuf_local *lnb, struct obd_trans_info *oti,
- struct lustre_capa *capa)
+ struct niobuf_local *lnb)
{
+ struct tgt_session_info *tsi = tgt_ses_info(env);
struct ofd_device *ofd = ofd_exp(exp);
struct ofd_thread_info *info;
+ const struct lu_fid *fid = &oa->o_oi.oi_fid;
int rc = 0;
- rc = lu_env_refill((struct lu_env *)env);
- LASSERT(rc == 0);
- info = ofd_info_init(env, exp);
+ if (*nr_local > PTLRPC_MAX_BRW_PAGES) {
+ CERROR("%s: bulk has too many pages %d, which exceeds the maximum pages per RPC of %d\n",
+ exp->exp_obd->obd_name, *nr_local, PTLRPC_MAX_BRW_PAGES);
+ RETURN(-EPROTO);
+ }
+
+ if (tgt_ses_req(tsi) == NULL) { /* echo client case */
+ info = ofd_info_init(env, exp);
+ } else {
+ info = tsi2ofd_info(tsi);
+ }
LASSERT(oa != NULL);
- if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOENT)) {
+ if (OBD_FAIL_CHECK(OBD_FAIL_SRV_ENOENT)) {
struct ofd_seq *oseq;
+
oseq = ofd_seq_load(env, ofd, ostid_seq(&oa->o_oi));
if (IS_ERR(oseq)) {
CERROR("%s: Can not find seq for "DOSTID
LASSERT(objcount == 1);
LASSERT(obj->ioo_bufcnt > 0);
- rc = ostid_to_fid(&info->fti_fid, &oa->o_oi, 0);
- if (unlikely(rc != 0))
- RETURN(rc);
-
if (cmd == OBD_BRW_WRITE) {
- rc = ofd_auth_capa(exp, &info->fti_fid, ostid_seq(&oa->o_oi),
- capa, CAPA_OPC_OSS_WRITE);
- if (rc == 0) {
- la_from_obdo(&info->fti_attr, oa, OBD_MD_FLGETATTR);
- rc = ofd_preprw_write(env, exp, ofd, &info->fti_fid,
- &info->fti_attr, oa, objcount,
- obj, rnb, nr_local, lnb, oti);
- }
+ la_from_obdo(&info->fti_attr, oa, OBD_MD_FLGETATTR);
+ rc = ofd_preprw_write(env, exp, ofd, fid, &info->fti_attr, oa,
+ objcount, obj, rnb, nr_local, lnb);
} else if (cmd == OBD_BRW_READ) {
- rc = ofd_auth_capa(exp, &info->fti_fid, ostid_seq(&oa->o_oi),
- capa, CAPA_OPC_OSS_READ);
- if (rc == 0) {
- ofd_grant_prepare_read(env, exp, oa);
- rc = ofd_preprw_read(env, exp, ofd, &info->fti_fid,
- &info->fti_attr, obj->ioo_bufcnt,
- rnb, nr_local, lnb, oti);
- obdo_from_la(oa, &info->fti_attr, LA_ATIME);
- }
+ tgt_grant_prepare_read(env, exp, oa);
+ rc = ofd_preprw_read(env, exp, ofd, fid, &info->fti_attr, oa,
+ obj->ioo_bufcnt, rnb, nr_local, lnb);
} else {
CERROR("%s: wrong cmd %d received!\n",
exp->exp_obd->obd_name, cmd);
RETURN(rc);
}
+/**
+ * Drop reference on local buffers for read bulk IO.
+ *
+ * This will free all local buffers use by this read request.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ * \param[in] fid object FID
+ * \param[in] objcount always 1
+ * \param[in] niocount number of local buffers
+ * \param[in] lnb local buffers
+ *
+ * \retval 0 on successful execution
+ * \retval negative value on error
+ */
static int
ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
- struct lu_fid *fid, int objcount, int niocount,
+ const struct lu_fid *fid, int objcount, int niocount,
struct niobuf_local *lnb)
{
struct ofd_object *fo;
LASSERT(niocount > 0);
- fo = ofd_object_find(env, ofd, fid);
- if (IS_ERR(fo))
- RETURN(PTR_ERR(fo));
+ fo = ofd_info(env)->fti_obj;
LASSERT(fo != NULL);
LASSERT(ofd_object_exists(fo));
dt_bufs_put(env, ofd_object_child(fo), lnb, niocount);
- ofd_read_unlock(env, fo);
- ofd_object_put(env, fo);
- /* second put is pair to object_get in ofd_preprw_read */
ofd_object_put(env, fo);
RETURN(0);
}
+/**
+ * Set attributes of object during write bulk IO processing.
+ *
+ * Change object attributes and write parent FID into extended
+ * attributes when needed.
+ *
+ * \param[in] env execution environment
+ * \param[in] ofd OFD device
+ * \param[in] ofd_obj OFD object
+ * \param[in] la object attributes
+ * \param[in] oa obdo
+ *
+ * \retval 0 on successful attributes update
+ * \retval negative value on error
+ */
static int
ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
struct ofd_object *ofd_obj, struct lu_attr *la,
- struct filter_fid *ff)
+ struct obdo *oa)
{
struct ofd_thread_info *info = ofd_info(env);
+ struct filter_fid *ff = &info->fti_mds_fid;
__u64 valid = la->la_valid;
- int rc;
struct thandle *th;
struct dt_object *dt_obj;
- int ff_needed = 0;
+ int fl = 0;
+ int rc;
ENTRY;
dt_obj = ofd_object_child(ofd_obj);
LASSERT(dt_obj != NULL);
- la->la_valid &= LA_UID | LA_GID;
+ la->la_valid &= LA_UID | LA_GID | LA_PROJID;
- rc = ofd_attr_handle_ugid(env, ofd_obj, la, 0 /* !is_setattr */);
+ rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(out, rc);
- if (ff != NULL) {
- rc = ofd_object_ff_check(env, ofd_obj);
- if (rc == -ENODATA)
- ff_needed = 1;
- else if (rc < 0)
- GOTO(out, rc);
- }
-
- if (!la->la_valid && !ff_needed)
+ if (!la->la_valid && !(oa->o_valid &
+ (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
/* no attributes to set */
GOTO(out, rc = 0);
GOTO(out_tx, rc);
}
- if (ff_needed) {
- info->fti_buf.lb_buf = ff;
- info->fti_buf.lb_len = sizeof(*ff);
+ if (oa->o_valid & (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT |
+ OBD_MD_LAYOUT_VERSION)) {
rc = dt_declare_xattr_set(env, dt_obj, &info->fti_buf,
XATTR_NAME_FID, 0, th);
if (rc)
GOTO(out_tx, rc);
}
-
/* We don't need a transno for this operation which will be re-executed
* anyway when the OST_WRITE (with a transno assigned) is replayed */
rc = dt_trans_start_local(env, ofd->ofd_osd , th);
if (rc)
GOTO(out_tx, rc);
- /* set uid/gid */
- if (la->la_valid) {
- rc = dt_attr_set(env, dt_obj, la, th,
- ofd_object_capa(env, ofd_obj));
- if (rc)
- GOTO(out_tx, rc);
- }
+ ofd_read_lock(env, ofd_obj);
+
+ rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
+ if (rc != 0)
+ GOTO(out_unlock, rc);
+
+ if (!la->la_valid && !(oa->o_valid &
+ (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
+ /* no attributes to set */
+ GOTO(out_unlock, rc = 0);
- /* set filter fid EA */
- if (ff_needed) {
- rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID,
- 0, th, BYPASS_CAPA);
+
+
+ /* set uid/gid/projid */
+ if (la->la_valid) {
+ rc = dt_attr_set(env, dt_obj, la, th);
if (rc)
- GOTO(out_tx, rc);
+ GOTO(out_unlock, rc);
}
- EXIT;
+ fl = ofd_object_ff_update(env, ofd_obj, oa, ff);
+ if (fl <= 0)
+ GOTO(out_unlock, rc = fl);
+
+ /* set filter fid EA.
+ * FIXME: it holds read lock of ofd object to modify the XATTR_NAME_FID
+ * while the write lock should be held. However, it should work because
+ * write RPCs only modify ff_{parent,layout} and those information will
+ * be the same from all the write RPCs. The reason that fl is not used
+ * in dt_xattr_set() is to allow this race. */
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
+ GOTO(out_unlock, rc);
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
+ ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
+ else if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
+ le32_add_cpu(&ff->ff_parent.f_oid, -1);
+
+ info->fti_buf.lb_buf = ff;
+ info->fti_buf.lb_len = sizeof(*ff);
+ rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID, 0, th);
+ if (rc == 0)
+ filter_fid_le_to_cpu(&ofd_obj->ofo_ff, ff, sizeof(*ff));
+
+ GOTO(out_unlock, rc);
+
+out_unlock:
+ ofd_read_unlock(env, ofd_obj);
out_tx:
dt_trans_stop(env, ofd->ofd_osd, th);
out:
return rc;
}
+struct ofd_soft_sync_callback {
+ struct dt_txn_commit_cb ossc_cb;
+ struct obd_export *ossc_exp;
+};
+
+/**
+ * Callback function for "soft sync" update.
+ *
+ * Reset fed_soft_sync_count upon committing the "soft_sync" update.
+ * See ofd_soft_sync_cb_add() below for more details on soft sync.
+ *
+ * \param[in] env execution environment
+ * \param[in] th transaction handle
+ * \param[in] cb callback data
+ * \param[in] err error code
+ */
+static void ofd_cb_soft_sync(struct lu_env *env, struct thandle *th,
+ struct dt_txn_commit_cb *cb, int err)
+{
+ struct ofd_soft_sync_callback *ossc;
+
+ ossc = container_of(cb, struct ofd_soft_sync_callback, ossc_cb);
+
+ CDEBUG(D_INODE, "export %p soft sync count is reset\n", ossc->ossc_exp);
+ atomic_set(&ossc->ossc_exp->exp_filter_data.fed_soft_sync_count, 0);
+
+ class_export_cb_put(ossc->ossc_exp);
+ OBD_FREE_PTR(ossc);
+}
+
+/**
+ * Add callback for "soft sync" processing.
+ *
+ * The "soft sync" mechanism does asynchronous commit when OBD_BRW_SOFT_SYNC
+ * flag is set in client buffers. The intention is for this operation to
+ * commit pages belonging to a client which has "too many" outstanding
+ * unstable pages in its cache. See LU-2139 for details.
+ *
+ * This function adds callback to be called when commit is done.
+ *
+ * \param[in] th transaction handle
+ * \param[in] exp OBD export of client
+ *
+ * \retval 0 on successful callback adding
+ * \retval negative value on error
+ */
+static int ofd_soft_sync_cb_add(struct thandle *th, struct obd_export *exp)
+{
+ struct ofd_soft_sync_callback *ossc;
+ struct dt_txn_commit_cb *dcb;
+ int rc;
+
+ OBD_ALLOC_PTR(ossc);
+ if (ossc == NULL)
+ return -ENOMEM;
+
+ ossc->ossc_exp = class_export_cb_get(exp);
+
+ dcb = &ossc->ossc_cb;
+ dcb->dcb_func = ofd_cb_soft_sync;
+ INIT_LIST_HEAD(&dcb->dcb_linkage);
+ strlcpy(dcb->dcb_name, "ofd_cb_soft_sync", sizeof(dcb->dcb_name));
+
+ rc = dt_trans_cb_add(th, dcb);
+ if (rc) {
+ class_export_cb_put(exp);
+ OBD_FREE_PTR(ossc);
+ }
+
+ return rc;
+}
+
+/**
+ * Commit bulk IO buffers to the storage.
+ *
+ * This function finalizes write IO processing by writing data to the disk.
+ * That write can be synchronous or asynchronous depending on buffers flags.
+ *
+ * \param[in] env execution environment
+ * \param[in] exp OBD export of client
+ * \param[in] ofd OFD device
+ * \param[in] fid FID of object
+ * \param[in] la object attributes
+ * \param[in] ff parent FID of object
+ * \param[in] objcount always 1
+ * \param[in] niocount number of local buffers
+ * \param[in] lnb local buffers
+ * \param[in] granted grant space consumed for the bulk I/O
+ * \param[in] old_rc result of processing at this point
+ *
+ * \retval 0 on successful commit
+ * \retval negative value on error
+ */
static int
-ofd_commitrw_write(const struct lu_env *env, struct ofd_device *ofd,
- struct lu_fid *fid, struct lu_attr *la,
- struct filter_fid *ff, int objcount,
+ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
+ struct ofd_device *ofd, const struct lu_fid *fid,
+ struct lu_attr *la, struct obdo *oa, int objcount,
int niocount, struct niobuf_local *lnb,
- struct obd_trans_info *oti, int old_rc)
+ unsigned long granted, int old_rc)
{
- struct ofd_thread_info *info = ofd_info(env);
- struct ofd_object *fo;
- struct dt_object *o;
- struct thandle *th;
- int rc = 0;
- int retries = 0;
+ struct ofd_thread_info *info = ofd_info(env);
+ struct filter_export_data *fed = &exp->exp_filter_data;
+ struct ofd_object *fo;
+ struct dt_object *o;
+ struct thandle *th;
+ int rc = 0;
+ int rc2 = 0;
+ int retries = 0;
+ int i, restart = 0;
+ bool soft_sync = false;
+ bool cb_registered = false;
+ bool fake_write = false;
ENTRY;
LASSERT(objcount == 1);
- fo = ofd_object_find(env, ofd, fid);
+ fo = ofd_info(env)->fti_obj;
LASSERT(fo != NULL);
- LASSERT(ofd_object_exists(fo));
o = ofd_object_child(fo);
LASSERT(o != NULL);
if (old_rc)
GOTO(out, rc = old_rc);
+ if (!ofd_object_exists(fo))
+ GOTO(out, rc = -ENOENT);
/*
* The first write to each object must set some attributes. It is
* dt_declare_write_commit() since quota enforcement is now handled in
* declare phases.
*/
- rc = ofd_write_attr_set(env, ofd, fo, la, ff);
+ rc = ofd_write_attr_set(env, ofd, fo, la, oa);
if (rc)
GOTO(out, rc);
la->la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
+ /* do fake write, to simulate the write case for performance testing */
+ if (OBD_FAIL_CHECK_QUIET(OBD_FAIL_OST_FAKE_RW)) {
+ struct niobuf_local *last = &lnb[niocount - 1];
+ __u64 file_size = last->lnb_file_offset + last->lnb_len;
+ __u64 valid = la->la_valid;
+
+ la->la_valid = LA_SIZE;
+ la->la_size = 0;
+ rc = dt_attr_get(env, o, la);
+ if (rc < 0 && rc != -ENOENT)
+ GOTO(out, rc);
+
+ if (file_size < la->la_size)
+ file_size = la->la_size;
+
+ /* dirty inode by setting file size */
+ la->la_valid = valid | LA_SIZE;
+ la->la_size = file_size;
+
+ fake_write = true;
+ }
+
retry:
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(out, rc = PTR_ERR(th));
- th->th_sync |= oti->oti_sync_write;
+ th->th_sync |= ofd->ofd_sync_journal;
+ if (th->th_sync == 0) {
+ for (i = 0; i < niocount; i++) {
+ if (!(lnb[i].lnb_flags & OBD_BRW_ASYNC)) {
+ th->th_sync = 1;
+ break;
+ }
+ if (lnb[i].lnb_flags & OBD_BRW_SOFT_SYNC)
+ soft_sync = true;
+ }
+ }
if (OBD_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET))
GOTO(out_stop, rc = -EINPROGRESS);
- rc = dt_declare_write_commit(env, o, lnb, niocount, th);
- if (rc)
- GOTO(out_stop, rc);
+ if (likely(!fake_write)) {
+ rc = dt_declare_write_commit(env, o, lnb, niocount, th);
+ if (rc)
+ GOTO(out_stop, rc);
+ }
+
+ /* don't update atime on disk if it is older */
+ if (la->la_valid & LA_ATIME && la->la_atime <= fo->ofo_atime_ondisk)
+ la->la_valid &= ~LA_ATIME;
if (la->la_valid) {
/* update [mac]time if needed */
if (rc)
GOTO(out_stop, rc);
- rc = dt_write_commit(env, o, lnb, niocount, th);
- if (rc)
- GOTO(out_stop, rc);
+ ofd_read_lock(env, fo);
+ if (!ofd_object_exists(fo))
+ GOTO(out_unlock, rc = -ENOENT);
- if (la->la_valid) {
- rc = dt_attr_set(env, o, la, th, ofd_object_capa(env, fo));
+ /* Don't update timestamps if this write is older than a
+ * setattr which modifies the timestamps. b=10150 */
+ if (la->la_valid && tgt_fmd_check(exp, fid, info->fti_xid)) {
+ rc = dt_attr_set(env, o, la, th);
if (rc)
- GOTO(out_stop, rc);
+ GOTO(out_unlock, rc);
+ if (la->la_valid & LA_ATIME)
+ fo->ofo_atime_ondisk = la->la_atime;
+ }
+
+ if (likely(!fake_write)) {
+ OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_OST_WR_ATTR_DELAY,
+ OBD_FAIL_ONCE, cfs_fail_val);
+ rc = dt_write_commit(env, o, lnb, niocount, th, oa->o_size);
+ if (rc) {
+ restart = th->th_restart_tran;
+ GOTO(out_unlock, rc);
+ }
}
/* get attr to return */
- rc = dt_attr_get(env, o, la, ofd_object_capa(env, fo));
+ rc = dt_attr_get(env, o, la);
+out_unlock:
+ ofd_read_unlock(env, fo);
out_stop:
/* Force commit to make the just-deleted blocks
* reusable. LU-456 */
if (rc == -ENOSPC)
th->th_sync = 1;
- ofd_trans_stop(env, ofd, th, rc);
+ /* do this before trans stop in case commit has finished */
+ if (!th->th_sync && soft_sync && !cb_registered) {
+ ofd_soft_sync_cb_add(th, exp);
+ cb_registered = true;
+ }
+
+ if (rc == 0 && granted > 0) {
+ if (tgt_grant_commit_cb_add(th, exp, granted) == 0)
+ granted = 0;
+ }
+
+ rc2 = ofd_trans_stop(env, ofd, th, restart ? 0 : rc);
+ if (!rc)
+ rc = rc2;
if (rc == -ENOSPC && retries++ < 3) {
CDEBUG(D_INODE, "retry after force commit, retries:%d\n",
retries);
goto retry;
}
+ if (restart) {
+ retries++;
+ restart = 0;
+ if (retries % 10000 == 0)
+ CERROR("%s: restart IO write too many times: %d\n",
+ ofd_name(ofd), retries);
+ CDEBUG(D_INODE, "retry transaction, retries:%d\n",
+ retries);
+ goto retry;
+ }
+ if (!soft_sync)
+ /* reset fed_soft_sync_count upon non-SOFT_SYNC RPC */
+ atomic_set(&fed->fed_soft_sync_count, 0);
+ else if (atomic_inc_return(&fed->fed_soft_sync_count) ==
+ ofd->ofd_soft_sync_limit)
+ dt_commit_async(env, ofd->ofd_osd);
+
out:
dt_bufs_put(env, o, lnb, niocount);
- ofd_read_unlock(env, fo);
- ofd_object_put(env, fo);
- /* second put is pair to object_get in ofd_preprw_write */
ofd_object_put(env, fo);
- ofd_grant_commit(env, info->fti_exp, old_rc);
+ if (granted > 0)
+ tgt_grant_commit(exp, granted, old_rc);
RETURN(rc);
}
+/**
+ * Commit bulk IO to the storage.
+ *
+ * This is companion function to the ofd_preprw(). It finishes bulk IO
+ * request processing by committing buffers to the storage (WRITE) and/or
+ * freeing those buffers (read/write). See ofd_commitrw_read() and
+ * ofd_commitrw_write() for details about each type of IO.
+ *
+ * \param[in] env execution environment
+ * \param[in] cmd IO type (READ/WRITE)
+ * \param[in] exp OBD export of client
+ * \param[in] oa OBDO structure from client
+ * \param[in] objcount always 1
+ * \param[in] obj object data
+ * \param[in] rnb remote buffers
+ * \param[in] npages number of local buffers
+ * \param[in] lnb local buffers
+ * \param[in] old_rc result of processing at this point
+ *
+ * \retval 0 on successful commit
+ * \retval negative value on error
+ */
int ofd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
struct obdo *oa, int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int npages,
- struct niobuf_local *lnb, struct obd_trans_info *oti,
- int old_rc)
+ struct niobuf_local *lnb, int old_rc, int nob, ktime_t kstart)
{
- struct ofd_thread_info *info;
- struct ofd_mod_data *fmd;
- __u64 valid;
- struct ofd_device *ofd = ofd_exp(exp);
- struct filter_fid *ff = NULL;
- int rc = 0;
-
- info = ofd_info(env);
- ofd_oti2info(info, oti);
+ struct tgt_session_info *tsi = tgt_ses_info(env);
+ struct ofd_thread_info *info = ofd_info(env);
+ struct ofd_device *ofd = ofd_exp(exp);
+ const struct lu_fid *fid = &oa->o_oi.oi_fid;
+ struct ldlm_namespace *ns = ofd->ofd_namespace;
+ struct ldlm_resource *rs = NULL;
+ char *jobid;
+ __u64 valid;
+ int rc = 0;
+ int root_squash = 0;
LASSERT(npages > 0);
- rc = ostid_to_fid(&info->fti_fid, &oa->o_oi, 0);
- if (unlikely(rc != 0))
- RETURN(rc);
- if (cmd == OBD_BRW_WRITE) {
- /* Don't update timestamps if this write is older than a
- * setattr which modifies the timestamps. b=10150 */
-
- /* XXX when we start having persistent reservations this needs
- * to be changed to ofd_fmd_get() to create the fmd if it
- * doesn't already exist so we can store the reservation handle
- * there. */
- valid = OBD_MD_FLUID | OBD_MD_FLGID;
- fmd = ofd_fmd_find(exp, &info->fti_fid);
- if (!fmd || fmd->fmd_mactime_xid < info->fti_xid)
- valid |= OBD_MD_FLATIME | OBD_MD_FLMTIME |
- OBD_MD_FLCTIME;
- ofd_fmd_put(exp, fmd);
- la_from_obdo(&info->fti_attr, oa, valid);
+ if (tgt_ses_req(tsi) == NULL) { /* echo client case */
+ jobid = NULL;
+ } else {
+ jobid = tsi->tsi_jobid;
+ }
- if (oa->o_valid & OBD_MD_FLFID) {
- ff = &info->fti_mds_fid;
- ofd_prepare_fidea(ff, oa);
+ if (cmd == OBD_BRW_WRITE) {
+ struct lu_nodemap *nodemap;
+ __u32 mapped_uid, mapped_gid, mapped_projid;
+
+ /* doing this before the commit operation places the counter
+ * update almost immediately after reply to the client, which
+ * gives reasonable time stats and lets us use the actual
+ * bytes of i/o (rather than requested)
+ */
+ ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE_BYTES, jobid, nob);
+ ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid,
+ ktime_us_delta(ktime_get(), kstart));
+
+ nodemap = nodemap_get_from_exp(exp);
+ if (IS_ERR(nodemap))
+ RETURN(PTR_ERR(nodemap));
+ mapped_uid = nodemap_map_id(nodemap, NODEMAP_UID,
+ NODEMAP_FS_TO_CLIENT,
+ oa->o_uid);
+ mapped_gid = nodemap_map_id(nodemap, NODEMAP_GID,
+ NODEMAP_FS_TO_CLIENT,
+ oa->o_gid);
+ mapped_projid = nodemap_map_id(nodemap, NODEMAP_PROJID,
+ NODEMAP_FS_TO_CLIENT,
+ oa->o_projid);
+
+ if (!IS_ERR_OR_NULL(nodemap)) {
+ /* do not bypass quota enforcement if squashed uid */
+ if (unlikely(mapped_uid == nodemap->nm_squash_uid)) {
+ int idx;
+
+ for (idx = 0; idx < npages; idx++)
+ lnb[idx].lnb_flags &=
+ ~OBD_BRW_SYS_RESOURCE;
+ root_squash = 1;
+ }
+ nodemap_putref(nodemap);
}
- rc = ofd_commitrw_write(env, ofd, &info->fti_fid,
- &info->fti_attr, ff, objcount, npages,
- lnb, oti, old_rc);
+ valid = OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLPROJID |
+ OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME;
+ la_from_obdo(&info->fti_attr, oa, valid);
+
+ rc = ofd_commitrw_write(env, exp, ofd, fid, &info->fti_attr,
+ oa, objcount, npages, lnb,
+ oa->o_grant_used, old_rc);
if (rc == 0)
obdo_from_la(oa, &info->fti_attr,
- OFD_VALID_FLAGS | LA_GID | LA_UID);
+ OFD_VALID_FLAGS | LA_GID | LA_UID |
+ LA_PROJID);
else
- obdo_from_la(oa, &info->fti_attr, LA_GID | LA_UID);
+ obdo_from_la(oa, &info->fti_attr, LA_GID | LA_UID |
+ LA_PROJID);
/* don't report overquota flag if we failed before reaching
* commit */
else
oa->o_flags = OBD_FL_NO_GRPQUOTA;
}
+ if (lnb[0].lnb_flags & OBD_BRW_OVER_PRJQUOTA) {
+ if (oa->o_valid & OBD_MD_FLFLAGS)
+ oa->o_flags |= OBD_FL_NO_PRJQUOTA;
+ else
+ oa->o_flags = OBD_FL_NO_PRJQUOTA;
+ }
+
+ if (root_squash)
+ oa->o_flags |= OBD_FL_ROOT_SQUASH;
oa->o_valid |= OBD_MD_FLFLAGS;
- oa->o_valid |= OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA;
+ oa->o_valid |= OBD_MD_FLALLQUOTA;
}
- } else if (cmd == OBD_BRW_READ) {
- struct ldlm_namespace *ns = ofd->ofd_namespace;
-
- /* If oa != NULL then ofd_preprw_read updated the inode
- * atime and we should update the lvb so that other glimpses
- * will also get the updated value. bug 5972 */
- if (oa && ns && ns->ns_lvbo && ns->ns_lvbo->lvbo_update) {
- struct ldlm_resource *rs = NULL;
- ost_fid_build_resid(&info->fti_fid, &info->fti_resid);
+ /**
+ * Update LVB after writing finish for server lock, see
+ * comments in ldlm_lock_decref_internal(), If this is a
+ * local lock on a server namespace and this was the last
+ * reference, lock will be destroyed directly thus there
+ * is no chance for ldlm_request_cancel() to update lvb.
+ */
+ if (rc == 0 && (rnb[0].rnb_flags & OBD_BRW_SRVLOCK)) {
+ ost_fid_build_resid(fid, &info->fti_resid);
rs = ldlm_resource_get(ns, NULL, &info->fti_resid,
LDLM_EXTENT, 0);
- if (rs != NULL) {
- ns->ns_lvbo->lvbo_update(rs, NULL, 1);
+ if (!IS_ERR(rs)) {
+ ldlm_res_lvbo_update(rs, NULL, 1);
ldlm_resource_putref(rs);
}
}
- rc = ofd_commitrw_read(env, ofd, &info->fti_fid, objcount,
- npages, lnb);
+
+ /* Convert back to client IDs. LU-9671.
+ * nodemap_get_from_exp() may fail due to nodemap deactivated,
+ * server ID will be returned back to client in that case. */
+ oa->o_uid = mapped_uid;
+ oa->o_gid = mapped_gid;
+ oa->o_projid = mapped_projid;
+ } else if (cmd == OBD_BRW_READ) {
+ /* see comment on LPROC_OFD_STATS_WRITE_BYTES usage above */
+ ofd_counter_incr(exp, LPROC_OFD_STATS_READ_BYTES, jobid, nob);
+ ofd_counter_incr(exp, LPROC_OFD_STATS_READ, jobid,
+ ktime_us_delta(ktime_get(), kstart));
+
+ rc = ofd_commitrw_read(env, ofd, fid, objcount,
+ npages, lnb);
if (old_rc)
rc = old_rc;
} else {
rc = -EPROTO;
}
- ofd_info2oti(info, oti);
RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff