struct lustre_idmap_table *med_idmap;
};
-struct osc_creator {
- cfs_spinlock_t oscc_lock;
- cfs_list_t oscc_wait_create_list;
- struct obd_device *oscc_obd;
- obd_id oscc_last_id;//last available pre-created object
- obd_id oscc_next_id;// what object id to give out next
- int oscc_grow_count;
- /**
- * Limit oscc_grow_count value, can be changed via proc fs
- */
- int oscc_max_grow_count;
- struct obdo oscc_oa;
- int oscc_flags;
- cfs_waitq_t oscc_waitq; /* creating procs wait on this */
-};
-
struct ec_export_data { /* echo client */
cfs_list_t eced_locks;
};
rq_no_resend:1, rq_waiting:1, rq_receiving_reply:1,
rq_no_delay:1, rq_net_err:1, rq_wait_ctx:1,
rq_early:1, rq_must_unlink:1,
- rq_fake:1, /* this fake req */
rq_memalloc:1, /* req originated from "kswapd" */
/* server-side flags */
rq_packed_final:1, /* packed final reply */
int ptlrpc_request_bufs_pack(struct ptlrpc_request *request,
__u32 version, int opcode, char **bufs,
struct ptlrpc_cli_ctx *ctx);
-struct ptlrpc_request *ptlrpc_prep_fakereq(struct obd_import *imp,
- unsigned int timeout,
- ptlrpc_interpterer_t interpreter);
-void ptlrpc_fakereq_finished(struct ptlrpc_request *req);
-
struct ptlrpc_request *ptlrpc_prep_req(struct obd_import *imp, __u32 version,
int opcode, int count, __u32 *lengths,
char **bufs);
struct mdc_rpc_lock *cl_rpc_lock;
struct mdc_rpc_lock *cl_close_lock;
- struct osc_creator cl_oscc;
/* mgc datastruct */
cfs_semaphore_t cl_mgc_sem;
array */
cfs_mutex_t lov_lock;
struct obd_connect_data lov_ocd;
- struct lov_qos lov_qos; /* qos info per lov */
cfs_atomic_t lov_refcount;
__u32 lov_tgt_count; /* how many OBD's */
__u32 lov_active_tgt_count; /* how many active */
MODULES := lov
-lov-objs := lov_log.o lov_obd.o lov_pack.o lproc_lov.o lov_offset.o lov_merge.o lov_request.o lov_qos.o lov_ea.o lov_dev.o lov_object.o lov_page.o lov_lock.o lov_io.o lovsub_dev.o lovsub_object.o lovsub_page.o lovsub_lock.o lovsub_io.o lov_pool.o
+lov-objs := lov_log.o lov_obd.o lov_pack.o lproc_lov.o lov_offset.o lov_merge.o lov_request.o lov_ea.o lov_dev.o lov_object.o lov_page.o lov_lock.o lov_io.o lovsub_dev.o lovsub_object.o lovsub_page.o lovsub_lock.o lovsub_io.o lov_pool.o
EXTRA_DIST = $(lov-objs:.o=.c) lov_internal.h lov_cl_internal.h
if LIBLUSTRE
noinst_LIBRARIES = liblov.a
-liblov_a_SOURCES = lov_log.c lov_pool.c lov_obd.c lov_pack.c lov_request.c lov_offset.c lov_qos.c lov_merge.c lov_ea.c lov_internal.h lov_cl_internal.h lov_dev.c lov_object.c lov_page.c lov_lock.c lov_io.c lovsub_dev.c lovsub_object.c lovsub_page.c lovsub_lock.c lovsub_io.c
+liblov_a_SOURCES = lov_log.c lov_pool.c lov_obd.c lov_pack.c lov_request.c lov_offset.c lov_merge.c lov_ea.c lov_internal.h lov_cl_internal.h lov_dev.c lov_object.c lov_page.c lov_lock.c lov_io.c lovsub_dev.c lovsub_object.c lovsub_page.c lovsub_lock.c lovsub_io.c
liblov_a_CPPFLAGS = $(LLCPPFLAGS)
liblov_a_CFLAGS = $(LLCFLAGS)
endif
lov_pack.c \
lov_request.c \
lov_merge.c \
- lov_qos.c \
lov_dev.c \
lov_object.c \
lov_page.c \
}
#endif
- rc = qos_add_tgt(obd, index);
- if (rc)
- CERROR("qos_add_tgt failed %d\n", rc);
-
RETURN(0);
}
rc = 0;
}
- qos_del_tgt(obd, tgt);
-
tgt->ltd_exp = NULL;
RETURN(0);
}
lov->desc.ld_active_tgt_count--;
lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1;
}
- /* remove any old qos penalty */
- lov->lov_tgts[index]->ltd_qos.ltq_penalty = 0;
} else {
CERROR("Unknown event(%d) for uuid %s", ev, uuid->uuid);
}
cfs_mutex_init(&lov->lov_lock);
cfs_atomic_set(&lov->lov_refcount, 0);
- CFS_INIT_LIST_HEAD(&lov->lov_qos.lq_oss_list);
- cfs_init_rwsem(&lov->lov_qos.lq_rw_sem);
lov->lov_sp_me = LUSTRE_SP_CLI;
- lov->lov_qos.lq_dirty = 1;
- lov->lov_qos.lq_rr.lqr_dirty = 1;
- lov->lov_qos.lq_reset = 1;
- /* Default priority is toward free space balance */
- lov->lov_qos.lq_prio_free = 232;
- /* Default threshold for rr (roughly 17%) */
- lov->lov_qos.lq_threshold_rr = 43;
- /* Init statfs fields */
- OBD_ALLOC_PTR(lov->lov_qos.lq_statfs_data);
- if (NULL == lov->lov_qos.lq_statfs_data)
- RETURN(-ENOMEM);
- cfs_waitq_init(&lov->lov_qos.lq_statfs_waitq);
lov->lov_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
HASH_POOLS_MAX_BITS,
lov->lov_pool_count = 0;
rc = lov_ost_pool_init(&lov->lov_packed, 0);
if (rc)
- GOTO(out_free_statfs, rc);
- rc = lov_ost_pool_init(&lov->lov_qos.lq_rr.lqr_pool, 0);
- if (rc)
- GOTO(out_free_lov_packed, rc);
+ GOTO(out, rc);
lprocfs_lov_init_vars(&lvars);
lprocfs_obd_setup(obd, lvars.obd_vars);
RETURN(0);
-out_free_lov_packed:
- lov_ost_pool_free(&lov->lov_packed);
-out_free_statfs:
- OBD_FREE_PTR(lov->lov_qos.lq_statfs_data);
+out:
return rc;
}
lov_pool_del(obd, pool->pool_name);
}
cfs_hash_putref(lov->lov_pools_hash_body);
- lov_ost_pool_free(&(lov->lov_qos.lq_rr.lqr_pool));
lov_ost_pool_free(&lov->lov_packed);
lprocfs_obd_cleanup(obd);
lov->lov_tgt_size);
lov->lov_tgt_size = 0;
}
- OBD_FREE_PTR(lov->lov_qos.lq_statfs_data);
RETURN(0);
}
RETURN(rc);
}
-#ifndef log2
-#define log2(n) cfs_ffz(~(n))
-#endif
-
-static int lov_clear_orphans(struct obd_export *export, struct obdo *src_oa,
- struct lov_stripe_md **ea,
- struct obd_trans_info *oti)
-{
- struct lov_obd *lov;
- struct obdo *tmp_oa;
- struct obd_uuid *ost_uuid = NULL;
- int rc = 0, i;
- ENTRY;
-
- LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
- src_oa->o_flags == OBD_FL_DELORPHAN);
-
- lov = &export->exp_obd->u.lov;
-
- OBDO_ALLOC(tmp_oa);
- if (tmp_oa == NULL)
- RETURN(-ENOMEM);
-
- if (oti->oti_ost_uuid) {
- ost_uuid = oti->oti_ost_uuid;
- CDEBUG(D_HA, "clearing orphans only for %s\n",
- ost_uuid->uuid);
- }
-
- obd_getref(export->exp_obd);
- for (i = 0; i < lov->desc.ld_tgt_count; i++) {
- struct lov_stripe_md obj_md;
- struct lov_stripe_md *obj_mdp = &obj_md;
- struct lov_tgt_desc *tgt;
- int err;
-
- tgt = lov->lov_tgts[i];
- if (!tgt)
- continue;
-
- /* if called for a specific target, we don't
- care if it is not active. */
- if (!lov->lov_tgts[i]->ltd_active && ost_uuid == NULL) {
- CDEBUG(D_HA, "lov idx %d inactive\n", i);
- continue;
- }
-
- if (ost_uuid && !obd_uuid_equals(ost_uuid, &tgt->ltd_uuid))
- continue;
-
- CDEBUG(D_CONFIG,"Clear orphans for %d:%s\n", i,
- obd_uuid2str(ost_uuid));
-
- memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
-
- LASSERT(lov->lov_tgts[i]->ltd_exp);
- /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
- err = obd_create(NULL, lov->lov_tgts[i]->ltd_exp,
- tmp_oa, &obj_mdp, oti);
- if (err) {
- /* This export will be disabled until it is recovered,
- and then orphan recovery will be completed. */
- CERROR("error in orphan recovery on OST idx %d/%d: "
- "rc = %d\n", i, lov->desc.ld_tgt_count, err);
- rc = err;
- }
-
- if (ost_uuid)
- break;
- }
- obd_putref(export->exp_obd);
-
- OBDO_FREE(tmp_oa);
- RETURN(rc);
-}
-
static int lov_recreate(struct obd_export *exp, struct obdo *src_oa,
struct lov_stripe_md **ea, struct obd_trans_info *oti)
{
struct obd_trans_info *oti)
{
struct lov_obd *lov;
- struct obd_info oinfo;
- struct lov_request_set *set = NULL;
- struct lov_request *req;
- struct l_wait_info lwi = { 0 };
int rc = 0;
ENTRY;
if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
src_oa->o_flags == OBD_FL_DELORPHAN) {
- rc = lov_clear_orphans(exp, src_oa, ea, oti);
- RETURN(rc);
+ /* should be used with LOV anymore */
+ LBUG();
}
lov = &exp->exp_obd->u.lov;
if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
(src_oa->o_flags & OBD_FL_RECREATE_OBJS)) {
rc = lov_recreate(exp, src_oa, ea, oti);
- GOTO(out, rc);
- }
-
- /* issue statfs rpcs if the osfs data is older than qos_maxage - 1s,
- * later in alloc_qos(), we will wait for those rpcs to complete if
- * the osfs age is older than 2 * qos_maxage */
- qos_statfs_update(exp->exp_obd,
- cfs_time_shift_64(-lov->desc.ld_qos_maxage +
- OBD_STATFS_CACHE_SECONDS),
- 0);
-
- rc = lov_prep_create_set(exp, &oinfo, ea, src_oa, oti, &set);
- if (rc)
- GOTO(out, rc);
-
- cfs_list_for_each_entry(req, &set->set_list, rq_link) {
- /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
- rc = obd_create_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
- &req->rq_oi, &req->rq_oi.oi_md, oti);
}
- /* osc_create have timeout equ obd_timeout/2 so waiting don't be
- * longer then this */
- l_wait_event(set->set_waitq, lov_set_finished(set, 1), &lwi);
-
- /* we not have ptlrpc set for assign set->interpret and should
- * be call interpret function himself. calling from cb_create_update
- * not permited because lov_fini_create_set can sleep for long time,
- * but we must avoid sleeping in ptlrpcd interpret function. */
- rc = lov_fini_create_set(set, ea);
-out:
obd_putref(exp->exp_obd);
RETURN(rc);
}
+++ /dev/null
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- */
-
-#define DEBUG_SUBSYSTEM S_LOV
-
-#ifdef __KERNEL__
-#include <libcfs/libcfs.h>
-#else
-#include <liblustre.h>
-#endif
-
-#include <obd_class.h>
-#include <obd_lov.h>
-#include <lustre/lustre_idl.h>
-#include "lov_internal.h"
-
-/* #define QOS_DEBUG 1 */
-#define D_QOS D_OTHER
-
-#define TGT_BAVAIL(i) (lov->lov_tgts[i]->ltd_exp->exp_obd->obd_osfs.os_bavail *\
- lov->lov_tgts[i]->ltd_exp->exp_obd->obd_osfs.os_bsize)
-
-
-int qos_add_tgt(struct obd_device *obd, __u32 index)
-{
- struct lov_obd *lov = &obd->u.lov;
- struct lov_qos_oss *oss, *temposs;
- struct obd_export *exp = lov->lov_tgts[index]->ltd_exp;
- int rc = 0, found = 0;
- ENTRY;
-
- /* We only need this QOS struct on MDT, not clients - but we may not
- * have registered the LOV's observer yet, so there's no way to know */
- if (!exp || !exp->exp_connection) {
- CERROR("Missing connection\n");
- RETURN(-ENOTCONN);
- }
-
- cfs_down_write(&lov->lov_qos.lq_rw_sem);
- cfs_mutex_lock(&lov->lov_lock);
- cfs_list_for_each_entry(oss, &lov->lov_qos.lq_oss_list, lqo_oss_list) {
- if (obd_uuid_equals(&oss->lqo_uuid,
- &exp->exp_connection->c_remote_uuid)) {
- found++;
- break;
- }
- }
-
- if (!found) {
- OBD_ALLOC_PTR(oss);
- if (!oss)
- GOTO(out, rc = -ENOMEM);
- memcpy(&oss->lqo_uuid,
- &exp->exp_connection->c_remote_uuid,
- sizeof(oss->lqo_uuid));
- } else {
- /* Assume we have to move this one */
- cfs_list_del(&oss->lqo_oss_list);
- }
-
- oss->lqo_ost_count++;
- lov->lov_tgts[index]->ltd_qos.ltq_oss = oss;
-
- /* Add sorted by # of OSTs. Find the first entry that we're
- bigger than... */
- cfs_list_for_each_entry(temposs, &lov->lov_qos.lq_oss_list,
- lqo_oss_list) {
- if (oss->lqo_ost_count > temposs->lqo_ost_count)
- break;
- }
- /* ...and add before it. If we're the first or smallest, temposs
- points to the list head, and we add to the end. */
- cfs_list_add_tail(&oss->lqo_oss_list, &temposs->lqo_oss_list);
-
- lov->lov_qos.lq_dirty = 1;
- lov->lov_qos.lq_rr.lqr_dirty = 1;
-
- CDEBUG(D_QOS, "add tgt %s to OSS %s (%d OSTs)\n",
- obd_uuid2str(&lov->lov_tgts[index]->ltd_uuid),
- obd_uuid2str(&oss->lqo_uuid),
- oss->lqo_ost_count);
-
-out:
- cfs_mutex_unlock(&lov->lov_lock);
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
- RETURN(rc);
-}
-
-int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt)
-{
- struct lov_obd *lov = &obd->u.lov;
- struct lov_qos_oss *oss;
- int rc = 0;
- ENTRY;
-
- cfs_down_write(&lov->lov_qos.lq_rw_sem);
-
- oss = tgt->ltd_qos.ltq_oss;
- if (!oss)
- GOTO(out, rc = -ENOENT);
-
- oss->lqo_ost_count--;
- if (oss->lqo_ost_count == 0) {
- CDEBUG(D_QOS, "removing OSS %s\n",
- obd_uuid2str(&oss->lqo_uuid));
- cfs_list_del(&oss->lqo_oss_list);
- OBD_FREE_PTR(oss);
- }
-
- lov->lov_qos.lq_dirty = 1;
- lov->lov_qos.lq_rr.lqr_dirty = 1;
-out:
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
- RETURN(rc);
-}
-
-/* Recalculate per-object penalties for OSSs and OSTs,
- depends on size of each ost in an oss */
-static int qos_calc_ppo(struct obd_device *obd)
-{
- struct lov_obd *lov = &obd->u.lov;
- struct lov_qos_oss *oss;
- __u64 ba_max, ba_min, temp;
- __u32 num_active;
- int rc, i, prio_wide;
- time_t now, age;
- ENTRY;
-
- if (!lov->lov_qos.lq_dirty)
- GOTO(out, rc = 0);
-
- num_active = lov->desc.ld_active_tgt_count - 1;
- if (num_active < 1)
- GOTO(out, rc = -EAGAIN);
-
- /* find bavail on each OSS */
- cfs_list_for_each_entry(oss, &lov->lov_qos.lq_oss_list, lqo_oss_list) {
- oss->lqo_bavail = 0;
- }
- lov->lov_qos.lq_active_oss_count = 0;
-
- /* How badly user wants to select osts "widely" (not recently chosen
- and not on recent oss's). As opposed to "freely" (free space
- avail.) 0-256. */
- prio_wide = 256 - lov->lov_qos.lq_prio_free;
-
- ba_min = (__u64)(-1);
- ba_max = 0;
- now = cfs_time_current_sec();
- /* Calculate OST penalty per object */
- /* (lov ref taken in alloc_qos) */
- for (i = 0; i < lov->desc.ld_tgt_count; i++) {
- if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
- continue;
- temp = TGT_BAVAIL(i);
- if (!temp)
- continue;
- ba_min = min(temp, ba_min);
- ba_max = max(temp, ba_max);
-
- /* Count the number of usable OSS's */
- if (lov->lov_tgts[i]->ltd_qos.ltq_oss->lqo_bavail == 0)
- lov->lov_qos.lq_active_oss_count++;
- lov->lov_tgts[i]->ltd_qos.ltq_oss->lqo_bavail += temp;
-
- /* per-OST penalty is prio * TGT_bavail / (num_ost - 1) / 2 */
- temp >>= 1;
- lov_do_div64(temp, num_active);
- lov->lov_tgts[i]->ltd_qos.ltq_penalty_per_obj =
- (temp * prio_wide) >> 8;
-
- age = (now - lov->lov_tgts[i]->ltd_qos.ltq_used) >> 3;
- if (lov->lov_qos.lq_reset || age > 32 * lov->desc.ld_qos_maxage)
- lov->lov_tgts[i]->ltd_qos.ltq_penalty = 0;
- else if (age > lov->desc.ld_qos_maxage)
- /* Decay the penalty by half for every 8x the update
- * interval that the device has been idle. That gives
- * lots of time for the statfs information to be
- * updated (which the penalty is only a proxy for),
- * and avoids penalizing OSS/OSTs under light load. */
- lov->lov_tgts[i]->ltd_qos.ltq_penalty >>=
- (age / lov->desc.ld_qos_maxage);
- }
-
- num_active = lov->lov_qos.lq_active_oss_count - 1;
- if (num_active < 1) {
- /* If there's only 1 OSS, we can't penalize it, so instead
- we have to double the OST penalty */
- num_active = 1;
- for (i = 0; i < lov->desc.ld_tgt_count; i++) {
- if (lov->lov_tgts[i] == NULL)
- continue;
- lov->lov_tgts[i]->ltd_qos.ltq_penalty_per_obj <<= 1;
- }
- }
-
- /* Per-OSS penalty is prio * oss_avail / oss_osts / (num_oss - 1) / 2 */
- cfs_list_for_each_entry(oss, &lov->lov_qos.lq_oss_list, lqo_oss_list) {
- temp = oss->lqo_bavail >> 1;
- lov_do_div64(temp, oss->lqo_ost_count * num_active);
- oss->lqo_penalty_per_obj = (temp * prio_wide) >> 8;
-
- age = (now - oss->lqo_used) >> 3;
- if (lov->lov_qos.lq_reset || age > 32 * lov->desc.ld_qos_maxage)
- oss->lqo_penalty = 0;
- else if (age > lov->desc.ld_qos_maxage)
- /* Decay the penalty by half for every 8x the update
- * interval that the device has been idle. That gives
- * lots of time for the statfs information to be
- * updated (which the penalty is only a proxy for),
- * and avoids penalizing OSS/OSTs under light load. */
- oss->lqo_penalty >>= (age / lov->desc.ld_qos_maxage);
- }
-
- lov->lov_qos.lq_dirty = 0;
- lov->lov_qos.lq_reset = 0;
-
- /* If each ost has almost same free space,
- * do rr allocation for better creation performance */
- lov->lov_qos.lq_same_space = 0;
- if ((ba_max * (256 - lov->lov_qos.lq_threshold_rr)) >> 8 < ba_min) {
- lov->lov_qos.lq_same_space = 1;
- /* Reset weights for the next time we enter qos mode */
- lov->lov_qos.lq_reset = 1;
- }
- rc = 0;
-
-out:
- if (!rc && lov->lov_qos.lq_same_space)
- RETURN(-EAGAIN);
- RETURN(rc);
-}
-
-static int qos_calc_weight(struct lov_obd *lov, int i)
-{
- __u64 temp, temp2;
-
- /* Final ost weight = TGT_BAVAIL - ost_penalty - oss_penalty */
- temp = TGT_BAVAIL(i);
- temp2 = lov->lov_tgts[i]->ltd_qos.ltq_penalty +
- lov->lov_tgts[i]->ltd_qos.ltq_oss->lqo_penalty;
- if (temp < temp2)
- lov->lov_tgts[i]->ltd_qos.ltq_weight = 0;
- else
- lov->lov_tgts[i]->ltd_qos.ltq_weight = temp - temp2;
- return 0;
-}
-
-/* We just used this index for a stripe; adjust everyone's weights */
-static int qos_used(struct lov_obd *lov, struct ost_pool *osts,
- __u32 index, __u64 *total_wt)
-{
- struct lov_qos_oss *oss;
- int j;
- ENTRY;
-
- /* Don't allocate from this stripe anymore, until the next alloc_qos */
- lov->lov_tgts[index]->ltd_qos.ltq_usable = 0;
-
- oss = lov->lov_tgts[index]->ltd_qos.ltq_oss;
-
- /* Decay old penalty by half (we're adding max penalty, and don't
- want it to run away.) */
- lov->lov_tgts[index]->ltd_qos.ltq_penalty >>= 1;
- oss->lqo_penalty >>= 1;
-
- /* mark the OSS and OST as recently used */
- lov->lov_tgts[index]->ltd_qos.ltq_used =
- oss->lqo_used = cfs_time_current_sec();
-
- /* Set max penalties for this OST and OSS */
- lov->lov_tgts[index]->ltd_qos.ltq_penalty +=
- lov->lov_tgts[index]->ltd_qos.ltq_penalty_per_obj *
- lov->desc.ld_active_tgt_count;
- oss->lqo_penalty += oss->lqo_penalty_per_obj *
- lov->lov_qos.lq_active_oss_count;
-
- /* Decrease all OSS penalties */
- cfs_list_for_each_entry(oss, &lov->lov_qos.lq_oss_list, lqo_oss_list) {
- if (oss->lqo_penalty < oss->lqo_penalty_per_obj)
- oss->lqo_penalty = 0;
- else
- oss->lqo_penalty -= oss->lqo_penalty_per_obj;
- }
-
- *total_wt = 0;
- /* Decrease all OST penalties */
- for (j = 0; j < osts->op_count; j++) {
- int i;
-
- i = osts->op_array[j];
- if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
- continue;
- if (lov->lov_tgts[i]->ltd_qos.ltq_penalty <
- lov->lov_tgts[i]->ltd_qos.ltq_penalty_per_obj)
- lov->lov_tgts[i]->ltd_qos.ltq_penalty = 0;
- else
- lov->lov_tgts[i]->ltd_qos.ltq_penalty -=
- lov->lov_tgts[i]->ltd_qos.ltq_penalty_per_obj;
-
- qos_calc_weight(lov, i);
-
- /* Recalc the total weight of usable osts */
- if (lov->lov_tgts[i]->ltd_qos.ltq_usable)
- *total_wt += lov->lov_tgts[i]->ltd_qos.ltq_weight;
-
-#ifdef QOS_DEBUG
- CDEBUG(D_QOS, "recalc tgt %d usable=%d avail="LPU64
- " ostppo="LPU64" ostp="LPU64" ossppo="LPU64
- " ossp="LPU64" wt="LPU64"\n",
- i, lov->lov_tgts[i]->ltd_qos.ltq_usable,
- TGT_BAVAIL(i) >> 10,
- lov->lov_tgts[i]->ltd_qos.ltq_penalty_per_obj >> 10,
- lov->lov_tgts[i]->ltd_qos.ltq_penalty >> 10,
- lov->lov_tgts[i]->ltd_qos.ltq_oss->lqo_penalty_per_obj>>10,
- lov->lov_tgts[i]->ltd_qos.ltq_oss->lqo_penalty >> 10,
- lov->lov_tgts[i]->ltd_qos.ltq_weight >> 10);
-#endif
- }
-
- RETURN(0);
-}
-
-#define LOV_QOS_EMPTY ((__u32)-1)
-/* compute optimal round-robin order, based on OSTs per OSS */
-static int qos_calc_rr(struct lov_obd *lov, struct ost_pool *src_pool,
- struct lov_qos_rr *lqr)
-{
- struct lov_qos_oss *oss;
- unsigned placed, real_count;
- int i, rc;
- ENTRY;
-
- if (!lqr->lqr_dirty) {
- LASSERT(lqr->lqr_pool.op_size);
- RETURN(0);
- }
-
- /* Do actual allocation. */
- cfs_down_write(&lov->lov_qos.lq_rw_sem);
-
- /*
- * Check again. While we were sleeping on @lq_rw_sem something could
- * change.
- */
- if (!lqr->lqr_dirty) {
- LASSERT(lqr->lqr_pool.op_size);
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
- RETURN(0);
- }
-
- real_count = src_pool->op_count;
-
- /* Zero the pool array */
- /* alloc_rr is holding a read lock on the pool, so nobody is adding/
- deleting from the pool. The lq_rw_sem insures that nobody else
- is reading. */
- lqr->lqr_pool.op_count = real_count;
- rc = lov_ost_pool_extend(&lqr->lqr_pool, real_count);
- if (rc) {
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
- RETURN(rc);
- }
- for (i = 0; i < lqr->lqr_pool.op_count; i++)
- lqr->lqr_pool.op_array[i] = LOV_QOS_EMPTY;
-
- /* Place all the OSTs from 1 OSS at the same time. */
- placed = 0;
- cfs_list_for_each_entry(oss, &lov->lov_qos.lq_oss_list, lqo_oss_list) {
- int j = 0;
- for (i = 0; i < lqr->lqr_pool.op_count; i++) {
- if (lov->lov_tgts[src_pool->op_array[i]] &&
- (lov->lov_tgts[src_pool->op_array[i]]->ltd_qos.ltq_oss == oss)) {
- /* Evenly space these OSTs across arrayspace */
- int next = j * lqr->lqr_pool.op_count / oss->lqo_ost_count;
- while (lqr->lqr_pool.op_array[next] !=
- LOV_QOS_EMPTY)
- next = (next + 1) % lqr->lqr_pool.op_count;
- lqr->lqr_pool.op_array[next] = src_pool->op_array[i];
- j++;
- placed++;
- }
- }
- }
-
- lqr->lqr_dirty = 0;
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
-
- if (placed != real_count) {
- /* This should never happen */
- LCONSOLE_ERROR_MSG(0x14e, "Failed to place all OSTs in the "
- "round-robin list (%d of %d).\n",
- placed, real_count);
- for (i = 0; i < lqr->lqr_pool.op_count; i++) {
- LCONSOLE(D_WARNING, "rr #%d ost idx=%d\n", i,
- lqr->lqr_pool.op_array[i]);
- }
- lqr->lqr_dirty = 1;
- RETURN(-EAGAIN);
- }
-
-#ifdef QOS_DEBUG
- for (i = 0; i < lqr->lqr_pool.op_count; i++) {
- LCONSOLE(D_QOS, "rr #%d ost idx=%d\n", i,
- lqr->lqr_pool.op_array[i]);
- }
-#endif
-
- RETURN(0);
-}
-
-
-void qos_shrink_lsm(struct lov_request_set *set)
-{
- struct lov_stripe_md *lsm = set->set_oi->oi_md, *lsm_new;
- /* XXX LOV STACKING call into osc for sizes */
- unsigned oldsize, newsize;
-
- if (set->set_oti && set->set_cookies && set->set_cookie_sent) {
- struct llog_cookie *cookies;
- oldsize = lsm->lsm_stripe_count * sizeof(*cookies);
- newsize = set->set_count * sizeof(*cookies);
-
- cookies = set->set_cookies;
- oti_alloc_cookies(set->set_oti, set->set_count);
- if (set->set_oti->oti_logcookies) {
- memcpy(set->set_oti->oti_logcookies, cookies, newsize);
- OBD_FREE_LARGE(cookies, oldsize);
- set->set_cookies = set->set_oti->oti_logcookies;
- } else {
- CWARN("'leaking' %d bytes\n", oldsize - newsize);
- }
- }
-
- CWARN("using fewer stripes for object "LPU64": old %u new %u\n",
- lsm->lsm_object_id, lsm->lsm_stripe_count, set->set_count);
- LASSERT(lsm->lsm_stripe_count >= set->set_count);
-
- newsize = lov_stripe_md_size(set->set_count);
- OBD_ALLOC_LARGE(lsm_new, newsize);
- if (lsm_new != NULL) {
- int i;
- memcpy(lsm_new, lsm, sizeof(*lsm));
- for (i = 0; i < lsm->lsm_stripe_count; i++) {
- if (i < set->set_count) {
- lsm_new->lsm_oinfo[i] = lsm->lsm_oinfo[i];
- continue;
- }
- OBD_SLAB_FREE(lsm->lsm_oinfo[i], lov_oinfo_slab,
- sizeof(struct lov_oinfo));
- }
- lsm_new->lsm_stripe_count = set->set_count;
- OBD_FREE_LARGE(lsm, sizeof(struct lov_stripe_md) +
- lsm->lsm_stripe_count*sizeof(struct lov_oinfo*));
- set->set_oi->oi_md = lsm_new;
- } else {
- CWARN("'leaking' few bytes\n");
- }
-}
-
-/**
- * Check whether we can create the object on the OST(refered by ost_idx)
- * \retval:
- * 0: create the object.
- * other value: did not create the object.
- */
-static int lov_check_and_create_object(struct lov_obd *lov, int ost_idx,
- struct lov_stripe_md *lsm,
- struct lov_request *req,
- struct obd_trans_info *oti)
-{
- __u16 stripe;
- int rc = -EIO;
- ENTRY;
-
- CDEBUG(D_QOS, "Check and create on idx %d \n", ost_idx);
- if (!lov->lov_tgts[ost_idx] ||
- !lov->lov_tgts[ost_idx]->ltd_active)
- RETURN(rc);
-
- /* check if objects has been created on this ost */
- for (stripe = 0; stripe < lsm->lsm_stripe_count; stripe++) {
- /* already have object at this stripe */
- if (ost_idx == lsm->lsm_oinfo[stripe]->loi_ost_idx)
- break;
- }
-
- if (stripe >= lsm->lsm_stripe_count) {
- req->rq_idx = ost_idx;
- rc = obd_create(NULL, lov->lov_tgts[ost_idx]->ltd_exp,
- req->rq_oi.oi_oa, &req->rq_oi.oi_md,
- oti);
- }
- RETURN(rc);
-}
-
-int qos_remedy_create(struct lov_request_set *set, struct lov_request *req)
-{
- struct lov_stripe_md *lsm = set->set_oi->oi_md;
- struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
- unsigned ost_idx;
- unsigned ost_count;
- struct pool_desc *pool;
- struct ost_pool *osts = NULL;
- int i;
- int rc = -EIO;
- ENTRY;
-
- /* First check whether we can create the objects on the pool */
- /* In the function below, .hs_keycmp resolves to
- * pool_hashkey_keycmp() */
- /* coverity[overrun-buffer-val] */
- pool = lov_find_pool(lov, lsm->lsm_pool_name);
- if (pool != NULL) {
- cfs_down_read(&pool_tgt_rw_sem(pool));
- osts = &(pool->pool_obds);
- ost_count = osts->op_count;
- for (i = 0, ost_idx = osts->op_array[0]; i < ost_count;
- i++, ost_idx = osts->op_array[i]) {
- rc = lov_check_and_create_object(lov, ost_idx, lsm, req,
- set->set_oti);
- if (rc == 0)
- break;
- }
- cfs_up_read(&pool_tgt_rw_sem(pool));
- lov_pool_putref(pool);
- RETURN(rc);
- }
-
- ost_count = lov->desc.ld_tgt_count;
- /* Then check whether we can create the objects on other OSTs */
- ost_idx = (req->rq_idx + lsm->lsm_stripe_count) % ost_count;
- for (i = 0; i < ost_count; i++, ost_idx = (ost_idx + 1) % ost_count) {
- rc = lov_check_and_create_object(lov, ost_idx, lsm, req,
- set->set_oti);
-
- if (rc == 0)
- break;
- }
-
- RETURN(rc);
-}
-
-static int min_stripe_count(int stripe_cnt, int flags)
-{
- return (flags & LOV_USES_DEFAULT_STRIPE ?
- stripe_cnt - (stripe_cnt / 4) : stripe_cnt);
-}
-
-#define LOV_CREATE_RESEED_MULT 30
-#define LOV_CREATE_RESEED_MIN 2000
-/* Allocate objects on osts with round-robin algorithm */
-static int alloc_rr(struct lov_obd *lov, int *idx_arr, int *stripe_cnt,
- char *poolname, int flags)
-{
- unsigned array_idx;
- int i, rc, *idx_pos;
- __u32 ost_idx;
- int ost_start_idx_temp;
- int speed = 0;
- int stripe_cnt_min = min_stripe_count(*stripe_cnt, flags);
- struct pool_desc *pool;
- struct ost_pool *osts;
- struct lov_qos_rr *lqr;
- ENTRY;
-
- pool = lov_find_pool(lov, poolname);
- if (pool == NULL) {
- osts = &(lov->lov_packed);
- lqr = &(lov->lov_qos.lq_rr);
- } else {
- cfs_down_read(&pool_tgt_rw_sem(pool));
- osts = &(pool->pool_obds);
- lqr = &(pool->pool_rr);
- }
-
- rc = qos_calc_rr(lov, osts, lqr);
- if (rc)
- GOTO(out, rc);
-
- if (--lqr->lqr_start_count <= 0) {
- lqr->lqr_start_idx = cfs_rand() % osts->op_count;
- lqr->lqr_start_count =
- (LOV_CREATE_RESEED_MIN / max(osts->op_count, 1U) +
- LOV_CREATE_RESEED_MULT) * max(osts->op_count, 1U);
- } else if (stripe_cnt_min >= osts->op_count ||
- lqr->lqr_start_idx > osts->op_count) {
- /* If we have allocated from all of the OSTs, slowly
- * precess the next start if the OST/stripe count isn't
- * already doing this for us. */
- lqr->lqr_start_idx %= osts->op_count;
- if (*stripe_cnt > 1 && (osts->op_count % (*stripe_cnt)) != 1)
- ++lqr->lqr_offset_idx;
- }
- cfs_down_read(&lov->lov_qos.lq_rw_sem);
- ost_start_idx_temp = lqr->lqr_start_idx;
-
-repeat_find:
- array_idx = (lqr->lqr_start_idx + lqr->lqr_offset_idx) % osts->op_count;
- idx_pos = idx_arr;
-#ifdef QOS_DEBUG
- CDEBUG(D_QOS, "pool '%s' want %d startidx %d startcnt %d offset %d "
- "active %d count %d arrayidx %d\n", poolname,
- *stripe_cnt, lqr->lqr_start_idx, lqr->lqr_start_count,
- lqr->lqr_offset_idx, osts->op_count, osts->op_count, array_idx);
-#endif
-
- for (i = 0; i < osts->op_count;
- i++, array_idx=(array_idx + 1) % osts->op_count) {
- ++lqr->lqr_start_idx;
- ost_idx = lqr->lqr_pool.op_array[array_idx];
-#ifdef QOS_DEBUG
- CDEBUG(D_QOS, "#%d strt %d act %d strp %d ary %d idx %d\n",
- i, lqr->lqr_start_idx,
- ((ost_idx != LOV_QOS_EMPTY) && lov->lov_tgts[ost_idx]) ?
- lov->lov_tgts[ost_idx]->ltd_active : 0,
- idx_pos - idx_arr, array_idx, ost_idx);
-#endif
- if ((ost_idx == LOV_QOS_EMPTY) || !lov->lov_tgts[ost_idx] ||
- !lov->lov_tgts[ost_idx]->ltd_active)
- continue;
-
- /* Fail Check before osc_precreate() is called
- so we can only 'fail' single OSC. */
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OSC_PRECREATE) && ost_idx == 0)
- continue;
-
- /* Drop slow OSCs if we can */
- if (obd_precreate(lov->lov_tgts[ost_idx]->ltd_exp) > speed)
- continue;
-
- *idx_pos = ost_idx;
- idx_pos++;
- /* We have enough stripes */
- if (idx_pos - idx_arr == *stripe_cnt)
- break;
- }
- if ((speed < 2) && (idx_pos - idx_arr < stripe_cnt_min)) {
- /* Try again, allowing slower OSCs */
- speed++;
- lqr->lqr_start_idx = ost_start_idx_temp;
- goto repeat_find;
- }
-
- cfs_up_read(&lov->lov_qos.lq_rw_sem);
-
- *stripe_cnt = idx_pos - idx_arr;
-out:
- if (pool != NULL) {
- cfs_up_read(&pool_tgt_rw_sem(pool));
- /* put back ref got by lov_find_pool() */
- lov_pool_putref(pool);
- }
-
- RETURN(rc);
-}
-
-/* alloc objects on osts with specific stripe offset */
-static int alloc_specific(struct lov_obd *lov, struct lov_stripe_md *lsm,
- int *idx_arr)
-{
- unsigned ost_idx, array_idx, ost_count;
- int i, rc, *idx_pos;
- int speed = 0;
- struct pool_desc *pool;
- struct ost_pool *osts;
- ENTRY;
-
- /* In the function below, .hs_keycmp resolves to
- * pool_hashkey_keycmp() */
- /* coverity[overrun-buffer-val] */
- pool = lov_find_pool(lov, lsm->lsm_pool_name);
- if (pool == NULL) {
- osts = &(lov->lov_packed);
- } else {
- cfs_down_read(&pool_tgt_rw_sem(pool));
- osts = &(pool->pool_obds);
- }
-
- ost_count = osts->op_count;
-
-repeat_find:
- /* search loi_ost_idx in ost array */
- array_idx = 0;
- for (i = 0; i < ost_count; i++) {
- if (osts->op_array[i] == lsm->lsm_oinfo[0]->loi_ost_idx) {
- array_idx = i;
- break;
- }
- }
- if (i == ost_count) {
- CERROR("Start index %d not found in pool '%s'\n",
- lsm->lsm_oinfo[0]->loi_ost_idx, lsm->lsm_pool_name);
- GOTO(out, rc = -EINVAL);
- }
-
- idx_pos = idx_arr;
- for (i = 0; i < ost_count;
- i++, array_idx = (array_idx + 1) % ost_count) {
- ost_idx = osts->op_array[array_idx];
-
- if (!lov->lov_tgts[ost_idx] ||
- !lov->lov_tgts[ost_idx]->ltd_active) {
- continue;
- }
-
- /* Fail Check before osc_precreate() is called
- so we can only 'fail' single OSC. */
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OSC_PRECREATE) && ost_idx == 0)
- continue;
-
- /* Drop slow OSCs if we can, but not for requested start idx.
- *
- * This means "if OSC is slow and it is not the requested
- * start OST, then it can be skipped, otherwise skip it only
- * if it is inactive/recovering/out-of-space." */
- if ((obd_precreate(lov->lov_tgts[ost_idx]->ltd_exp) > speed) &&
- (i != 0 || speed >= 2))
- continue;
-
- *idx_pos = ost_idx;
- idx_pos++;
- /* We have enough stripes */
- if (idx_pos - idx_arr == lsm->lsm_stripe_count)
- GOTO(out, rc = 0);
- }
- if (speed < 2) {
- /* Try again, allowing slower OSCs */
- speed++;
- goto repeat_find;
- }
-
- /* If we were passed specific striping params, then a failure to
- * meet those requirements is an error, since we can't reallocate
- * that memory (it might be part of a larger array or something).
- *
- * We can only get here if lsm_stripe_count was originally > 1.
- */
- CERROR("can't lstripe objid "LPX64": have %d want %u\n",
- lsm->lsm_object_id, (int)(idx_pos - idx_arr),
- lsm->lsm_stripe_count);
- rc = -EFBIG;
-out:
- if (pool != NULL) {
- cfs_up_read(&pool_tgt_rw_sem(pool));
- /* put back ref got by lov_find_pool() */
- lov_pool_putref(pool);
- }
-
- RETURN(rc);
-}
-
-/* Alloc objects on osts with optimization based on:
- - free space
- - network resources (shared OSS's)
-*/
-static int alloc_qos(struct obd_export *exp, int *idx_arr, int *stripe_cnt,
- char *poolname, int flags)
-{
- struct lov_obd *lov = &exp->exp_obd->u.lov;
- __u64 total_weight = 0;
- int nfound, good_osts, i, rc = 0;
- int stripe_cnt_min = min_stripe_count(*stripe_cnt, flags);
- struct pool_desc *pool;
- struct ost_pool *osts;
- ENTRY;
-
- if (stripe_cnt_min < 1)
- RETURN(-EINVAL);
-
- pool = lov_find_pool(lov, poolname);
- if (pool == NULL) {
- osts = &(lov->lov_packed);
- } else {
- cfs_down_read(&pool_tgt_rw_sem(pool));
- osts = &(pool->pool_obds);
- }
-
- obd_getref(exp->exp_obd);
-
- /* wait for fresh statfs info if needed, the rpcs are sent in
- * lov_create() */
- qos_statfs_update(exp->exp_obd,
- cfs_time_shift_64(-2 * lov->desc.ld_qos_maxage), 1);
-
- /* Detect -EAGAIN early, before expensive lock is taken. */
- if (!lov->lov_qos.lq_dirty && lov->lov_qos.lq_same_space)
- GOTO(out_nolock, rc = -EAGAIN);
-
- /* Do actual allocation, use write lock here. */
- cfs_down_write(&lov->lov_qos.lq_rw_sem);
-
- /*
- * Check again, while we were sleeping on @lq_rw_sem things could
- * change.
- */
- if (!lov->lov_qos.lq_dirty && lov->lov_qos.lq_same_space)
- GOTO(out, rc = -EAGAIN);
-
- if (lov->desc.ld_active_tgt_count < 2)
- GOTO(out, rc = -EAGAIN);
-
- rc = qos_calc_ppo(exp->exp_obd);
- if (rc)
- GOTO(out, rc);
-
- good_osts = 0;
- /* Find all the OSTs that are valid stripe candidates */
- for (i = 0; i < osts->op_count; i++) {
- if (!lov->lov_tgts[osts->op_array[i]] ||
- !lov->lov_tgts[osts->op_array[i]]->ltd_active)
- continue;
-
- /* Fail Check before osc_precreate() is called
- so we can only 'fail' single OSC. */
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OSC_PRECREATE) && osts->op_array[i] == 0)
- continue;
-
- if (obd_precreate(lov->lov_tgts[osts->op_array[i]]->ltd_exp) > 2)
- continue;
-
- lov->lov_tgts[osts->op_array[i]]->ltd_qos.ltq_usable = 1;
- qos_calc_weight(lov, osts->op_array[i]);
- total_weight += lov->lov_tgts[osts->op_array[i]]->ltd_qos.ltq_weight;
-
- good_osts++;
- }
-
-#ifdef QOS_DEBUG
- CDEBUG(D_QOS, "found %d good osts\n", good_osts);
-#endif
-
- if (good_osts < stripe_cnt_min)
- GOTO(out, rc = -EAGAIN);
-
- /* We have enough osts */
- if (good_osts < *stripe_cnt)
- *stripe_cnt = good_osts;
-
- if (!*stripe_cnt)
- GOTO(out, rc = -EAGAIN);
-
- /* Find enough OSTs with weighted random allocation. */
- nfound = 0;
- while (nfound < *stripe_cnt) {
- __u64 rand, cur_weight;
-
- cur_weight = 0;
- rc = -ENODEV;
-
- if (total_weight) {
-#if BITS_PER_LONG == 32
- rand = cfs_rand() % (unsigned)total_weight;
- /* If total_weight > 32-bit, first generate the high
- * 32 bits of the random number, then add in the low
- * 32 bits (truncated to the upper limit, if needed) */
- if (total_weight > 0xffffffffULL)
- rand = (__u64)(cfs_rand() %
- (unsigned)(total_weight >> 32)) << 32;
- else
- rand = 0;
-
- if (rand == (total_weight & 0xffffffff00000000ULL))
- rand |= cfs_rand() % (unsigned)total_weight;
- else
- rand |= cfs_rand();
-
-#else
- rand = ((__u64)cfs_rand() << 32 | cfs_rand()) %
- total_weight;
-#endif
- } else {
- rand = 0;
- }
-
- /* On average, this will hit larger-weighted osts more often.
- 0-weight osts will always get used last (only when rand=0).*/
- for (i = 0; i < osts->op_count; i++) {
- if (!lov->lov_tgts[osts->op_array[i]] ||
- !lov->lov_tgts[osts->op_array[i]]->ltd_qos.ltq_usable)
- continue;
-
- cur_weight += lov->lov_tgts[osts->op_array[i]]->ltd_qos.ltq_weight;
-#ifdef QOS_DEBUG
- CDEBUG(D_QOS, "stripe_cnt=%d nfound=%d cur_weight="LPU64
- " rand="LPU64" total_weight="LPU64"\n",
- *stripe_cnt, nfound, cur_weight, rand, total_weight);
-#endif
- if (cur_weight >= rand) {
-#ifdef QOS_DEBUG
- CDEBUG(D_QOS, "assigned stripe=%d to idx=%d\n",
- nfound, osts->op_array[i]);
-#endif
- idx_arr[nfound++] = osts->op_array[i];
- qos_used(lov, osts, osts->op_array[i], &total_weight);
- rc = 0;
- break;
- }
- }
- /* should never satisfy below condition */
- if (rc) {
- CERROR("Didn't find any OSTs?\n");
- break;
- }
- }
- LASSERT(nfound == *stripe_cnt);
-
-out:
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
-
-out_nolock:
- if (pool != NULL) {
- cfs_up_read(&pool_tgt_rw_sem(pool));
- /* put back ref got by lov_find_pool() */
- lov_pool_putref(pool);
- }
-
- if (rc == -EAGAIN)
- rc = alloc_rr(lov, idx_arr, stripe_cnt, poolname, flags);
-
- obd_putref(exp->exp_obd);
- RETURN(rc);
-}
-
-/* return new alloced stripe count on success */
-static int alloc_idx_array(struct obd_export *exp, struct lov_stripe_md *lsm,
- int newea, int **idx_arr, int *arr_cnt, int flags)
-{
- struct lov_obd *lov = &exp->exp_obd->u.lov;
- int stripe_cnt = lsm->lsm_stripe_count;
- int i, rc = 0;
- int *tmp_arr = NULL;
- ENTRY;
-
- *arr_cnt = stripe_cnt;
- OBD_ALLOC(tmp_arr, *arr_cnt * sizeof(int));
- if (tmp_arr == NULL)
- RETURN(-ENOMEM);
- for (i = 0; i < *arr_cnt; i++)
- tmp_arr[i] = -1;
-
- if (newea ||
- lsm->lsm_oinfo[0]->loi_ost_idx >= lov->desc.ld_tgt_count)
- /* In the function below, .hs_keycmp resolves to
- * pool_hashkey_keycmp() */
- /* coverity[overrun-buffer-val] */
- rc = alloc_qos(exp, tmp_arr, &stripe_cnt,
- lsm->lsm_pool_name, flags);
- else
- rc = alloc_specific(lov, lsm, tmp_arr);
-
- if (rc)
- GOTO(out_arr, rc);
-
- *idx_arr = tmp_arr;
- RETURN(stripe_cnt);
-out_arr:
- OBD_FREE(tmp_arr, *arr_cnt * sizeof(int));
- *arr_cnt = 0;
- RETURN(rc);
-}
-
-static void free_idx_array(int *idx_arr, int arr_cnt)
-{
- if (arr_cnt)
- OBD_FREE(idx_arr, arr_cnt * sizeof(int));
-}
-
-int qos_prep_create(struct obd_export *exp, struct lov_request_set *set)
-{
- struct lov_obd *lov = &exp->exp_obd->u.lov;
- struct lov_stripe_md *lsm;
- struct obdo *src_oa = set->set_oi->oi_oa;
- struct obd_trans_info *oti = set->set_oti;
- int i, stripes, rc = 0, newea = 0;
- int flag = LOV_USES_ASSIGNED_STRIPE;
- int *idx_arr = NULL, idx_cnt = 0;
- ENTRY;
-
- LASSERT(src_oa->o_valid & OBD_MD_FLID);
- LASSERT(src_oa->o_valid & OBD_MD_FLGROUP);
-
- if (set->set_oi->oi_md == NULL) {
- __u16 stripes_def = lov_get_stripecnt(lov, LOV_MAGIC, 0);
-
- /* If the MDS file was truncated up to some size, stripe over
- * enough OSTs to allow the file to be created at that size.
- * This may mean we use more than the default # of stripes. */
- if (src_oa->o_valid & OBD_MD_FLSIZE) {
- obd_size min_bavail = LUSTRE_STRIPE_MAXBYTES;
-
- /* Find a small number of stripes we can use
- (up to # of active osts). */
- stripes = 1;
- for (i = 0; i < lov->desc.ld_tgt_count; i++) {
- if (!lov->lov_tgts[i] ||
- !lov->lov_tgts[i]->ltd_active)
- continue;
- min_bavail = min(min_bavail, TGT_BAVAIL(i));
- if (min_bavail * stripes > src_oa->o_size)
- break;
- stripes++;
- }
-
- if (stripes < stripes_def)
- stripes = stripes_def;
- } else {
- flag = LOV_USES_DEFAULT_STRIPE;
- stripes = stripes_def;
- }
-
- rc = lov_alloc_memmd(&set->set_oi->oi_md, stripes,
- lov->desc.ld_pattern ?
- lov->desc.ld_pattern : LOV_PATTERN_RAID0,
- LOV_MAGIC);
- if (rc < 0)
- GOTO(out_err, rc);
- newea = 1;
- rc = 0;
- }
-
- lsm = set->set_oi->oi_md;
- lsm->lsm_object_id = src_oa->o_id;
- lsm->lsm_object_seq = src_oa->o_seq;
- lsm->lsm_layout_gen = 0; /* actual generation set in mdd_lov_create() */
-
- if (!lsm->lsm_stripe_size)
- lsm->lsm_stripe_size = lov->desc.ld_default_stripe_size;
- if (!lsm->lsm_pattern) {
- LASSERT(lov->desc.ld_pattern);
- lsm->lsm_pattern = lov->desc.ld_pattern;
- }
-
- stripes = alloc_idx_array(exp, lsm, newea, &idx_arr, &idx_cnt, flag);
- if (stripes <= 0)
- GOTO(out_err, rc = stripes ? stripes : -EIO);
- LASSERTF(stripes <= lsm->lsm_stripe_count,"requested %d allocated %d\n",
- lsm->lsm_stripe_count, stripes);
-
- for (i = 0; i < stripes; i++) {
- struct lov_request *req;
- int ost_idx = idx_arr[i];
- LASSERT(ost_idx >= 0);
-
- OBD_ALLOC(req, sizeof(*req));
- if (req == NULL)
- GOTO(out_err, rc = -ENOMEM);
- lov_set_add_req(req, set);
-
- req->rq_buflen = sizeof(*req->rq_oi.oi_md);
- OBD_ALLOC_LARGE(req->rq_oi.oi_md, req->rq_buflen);
- if (req->rq_oi.oi_md == NULL)
- GOTO(out_err, rc = -ENOMEM);
-
- OBDO_ALLOC(req->rq_oi.oi_oa);
- if (req->rq_oi.oi_oa == NULL)
- GOTO(out_err, rc = -ENOMEM);
-
- req->rq_idx = ost_idx;
- req->rq_stripe = i;
- /* create data objects with "parent" OA */
- memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
- req->rq_oi.oi_cb_up = cb_create_update;
-
- /* XXX When we start creating objects on demand, we need to
- * make sure that we always create the object on the
- * stripe which holds the existing file size.
- */
- if (src_oa->o_valid & OBD_MD_FLSIZE) {
- req->rq_oi.oi_oa->o_size =
- lov_size_to_stripe(lsm, src_oa->o_size, i);
-
- CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
- i, req->rq_oi.oi_oa->o_size, src_oa->o_size);
- }
- }
- LASSERT(set->set_count == stripes);
-
- if (stripes < lsm->lsm_stripe_count)
- qos_shrink_lsm(set);
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LOV_PREP_CREATE)) {
- qos_shrink_lsm(set);
- rc = -EIO;
- }
-
- if (oti && (src_oa->o_valid & OBD_MD_FLCOOKIE)) {
- oti_alloc_cookies(oti, set->set_count);
- if (!oti->oti_logcookies)
- GOTO(out_err, rc = -ENOMEM);
- set->set_cookies = oti->oti_logcookies;
- }
-out_err:
- if (newea && rc)
- obd_free_memmd(exp, &set->set_oi->oi_md);
- if (idx_arr)
- free_idx_array(idx_arr, idx_cnt);
- EXIT;
- return rc;
-}
-
-void qos_update(struct lov_obd *lov)
-{
- ENTRY;
- lov->lov_qos.lq_dirty = 1;
-}
-
-void qos_statfs_done(struct lov_obd *lov)
-{
- cfs_down_write(&lov->lov_qos.lq_rw_sem);
- if (lov->lov_qos.lq_statfs_in_progress) {
- lov->lov_qos.lq_statfs_in_progress = 0;
- /* wake up any threads waiting for the statfs rpcs to complete*/
- cfs_waitq_signal(&lov->lov_qos.lq_statfs_waitq);
- }
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
-}
-
-static int qos_statfs_ready(struct obd_device *obd, __u64 max_age)
-{
- struct lov_obd *lov = &obd->u.lov;
- int rc;
- ENTRY;
- cfs_down_read(&lov->lov_qos.lq_rw_sem);
- rc = lov->lov_qos.lq_statfs_in_progress == 0 ||
- cfs_time_beforeq_64(max_age, obd->obd_osfs_age);
- cfs_up_read(&lov->lov_qos.lq_rw_sem);
- RETURN(rc);
-}
-
-/*
- * Update statfs data if the current osfs age is older than max_age.
- * If wait is not set, it means that we are called from lov_create()
- * and we should just issue the rpcs without waiting for them to complete.
- * If wait is set, we are called from alloc_qos() and we just have
- * to wait for the request set to complete.
- */
-void qos_statfs_update(struct obd_device *obd, __u64 max_age, int wait)
-{
- struct lov_obd *lov = &obd->u.lov;
- struct obd_info *oinfo;
- int rc = 0;
- struct ptlrpc_request_set *set = NULL;
- ENTRY;
-
- if (cfs_time_beforeq_64(max_age, obd->obd_osfs_age))
- /* statfs data are quite recent, don't need to refresh it */
- RETURN_EXIT;
-
- if (!wait && lov->lov_qos.lq_statfs_in_progress)
- /* statfs already in progress */
- RETURN_EXIT;
-
- cfs_down_write(&lov->lov_qos.lq_rw_sem);
- if (lov->lov_qos.lq_statfs_in_progress) {
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
- GOTO(out, rc = 0);
- }
- /* no statfs in flight, send rpcs */
- lov->lov_qos.lq_statfs_in_progress = 1;
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
-
- if (wait)
- CDEBUG(D_QOS, "%s: did not manage to get fresh statfs data "
- "in a timely manner (osfs age "LPU64", max age "LPU64")"
- ", sending new statfs rpcs\n",
- obd_uuid2str(&lov->desc.ld_uuid), obd->obd_osfs_age,
- max_age);
-
- /* need to send statfs rpcs */
- CDEBUG(D_QOS, "sending new statfs requests\n");
- memset(lov->lov_qos.lq_statfs_data, 0,
- sizeof(*lov->lov_qos.lq_statfs_data));
- oinfo = &lov->lov_qos.lq_statfs_data->lsd_oi;
- oinfo->oi_osfs = &lov->lov_qos.lq_statfs_data->lsd_statfs;
- oinfo->oi_flags = OBD_STATFS_NODELAY;
- set = ptlrpc_prep_set();
- if (!set)
- GOTO(out_failed, rc = -ENOMEM);
-
- rc = obd_statfs_async(obd->obd_self_export, oinfo, max_age, set);
- if (rc || cfs_list_empty(&set->set_requests)) {
- if (rc)
- CWARN("statfs failed with %d\n", rc);
- GOTO(out_failed, rc);
- }
- /* send requests via ptlrpcd */
- oinfo->oi_flags |= OBD_STATFS_PTLRPCD;
- ptlrpcd_add_rqset(set);
- GOTO(out, rc);
-
-out_failed:
- cfs_down_write(&lov->lov_qos.lq_rw_sem);
- lov->lov_qos.lq_statfs_in_progress = 0;
- /* wake up any threads waiting for the statfs rpcs to complete */
- cfs_waitq_signal(&lov->lov_qos.lq_statfs_waitq);
- cfs_up_write(&lov->lov_qos.lq_rw_sem);
- wait = 0;
-out:
- if (set)
- ptlrpc_set_destroy(set);
- if (wait) {
- struct l_wait_info lwi = { 0 };
- CDEBUG(D_QOS, "waiting for statfs requests to complete\n");
- l_wait_event(lov->lov_qos.lq_statfs_waitq,
- qos_statfs_ready(obd, max_age), &lwi);
- if (cfs_time_before_64(obd->obd_osfs_age, max_age))
- CDEBUG(D_QOS, "%s: still no fresh statfs data after "
- "waiting (osfs age "LPU64", max age "
- LPU64")\n",
- obd_uuid2str(&lov->desc.ld_uuid),
- obd->obd_osfs_age, max_age);
- }
-}
lov_fini_cancel_set(set);
RETURN(rc);
}
-
-static int lov_update_create_set(struct lov_request_set *set,
- struct lov_request *req, int rc)
-{
- struct obd_trans_info *oti = set->set_oti;
- struct lov_stripe_md *lsm = set->set_oi->oi_md;
- struct lov_oinfo *loi;
- struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
- ENTRY;
-
- if (rc && lov->lov_tgts[req->rq_idx] &&
- lov->lov_tgts[req->rq_idx]->ltd_active) {
- /* Pre-creating objects may timeout via -ETIMEDOUT or
- * -ENOTCONN both are always non-critical events. */
- CDEBUG(rc == -ETIMEDOUT || rc == -ENOTCONN ? D_HA : D_ERROR,
- "error creating fid "LPX64" sub-object "
- "on OST idx %d/%d: rc = %d\n",
- set->set_oi->oi_oa->o_id, req->rq_idx,
- lsm->lsm_stripe_count, rc);
- if (rc > 0) {
- CERROR("obd_create returned invalid err %d\n", rc);
- rc = -EIO;
- }
- }
-
- cfs_spin_lock(&set->set_lock);
- req->rq_stripe = cfs_atomic_read(&set->set_success);
- loi = lsm->lsm_oinfo[req->rq_stripe];
-
-
- if (rc) {
- lov_update_set(set, req, rc);
- cfs_spin_unlock(&set->set_lock);
- RETURN(rc);
- }
-
- loi->loi_id = req->rq_oi.oi_oa->o_id;
- loi->loi_seq = req->rq_oi.oi_oa->o_seq;
- loi->loi_ost_idx = req->rq_idx;
- loi_init(loi);
-
- if (oti && set->set_cookies)
- ++oti->oti_logcookies;
- if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
- set->set_cookie_sent++;
-
- lov_update_set(set, req, rc);
- cfs_spin_unlock(&set->set_lock);
-
- CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
- lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
- RETURN(rc);
-}
-
-static int create_done(struct obd_export *exp, struct lov_request_set *set,
- struct lov_stripe_md **lsmp)
-{
- struct lov_obd *lov = &exp->exp_obd->u.lov;
- struct obd_trans_info *oti = set->set_oti;
- struct obdo *src_oa = set->set_oi->oi_oa;
- struct lov_request *req;
- struct obdo *ret_oa = NULL;
- int success, attrset = 0, rc = 0;
- ENTRY;
-
- LASSERT(cfs_atomic_read(&set->set_completes));
-
- /* try alloc objects on other osts if osc_create fails for
- * exceptions: RPC failure, ENOSPC, etc */
- if (set->set_count != cfs_atomic_read(&set->set_success)) {
- cfs_list_for_each_entry (req, &set->set_list, rq_link) {
- if (req->rq_rc == 0)
- continue;
-
- cfs_atomic_dec(&set->set_completes);
- req->rq_complete = 0;
-
- rc = qos_remedy_create(set, req);
- lov_update_create_set(set, req, rc);
- }
- }
-
- success = cfs_atomic_read(&set->set_success);
- /* no successful creates */
- if (success == 0)
- GOTO(cleanup, rc);
-
- if (set->set_count != success) {
- set->set_count = success;
- qos_shrink_lsm(set);
- }
-
- OBDO_ALLOC(ret_oa);
- if (ret_oa == NULL)
- GOTO(cleanup, rc = -ENOMEM);
-
- cfs_list_for_each_entry(req, &set->set_list, rq_link) {
- if (!req->rq_complete || req->rq_rc)
- continue;
- lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
- req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
- req->rq_stripe, &attrset);
- }
- if (src_oa->o_valid & OBD_MD_FLSIZE &&
- ret_oa->o_size != src_oa->o_size) {
- CERROR("original size "LPU64" isn't new object size "LPU64"\n",
- src_oa->o_size, ret_oa->o_size);
- LBUG();
- }
- ret_oa->o_id = src_oa->o_id;
- ret_oa->o_seq = src_oa->o_seq;
- ret_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
- memcpy(src_oa, ret_oa, sizeof(*src_oa));
- OBDO_FREE(ret_oa);
-
- *lsmp = set->set_oi->oi_md;
- GOTO(done, rc = 0);
-
-cleanup:
- cfs_list_for_each_entry(req, &set->set_list, rq_link) {
- struct obd_export *sub_exp;
- int err = 0;
-
- if (!req->rq_complete || req->rq_rc)
- continue;
-
- sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
- err = obd_destroy(NULL, sub_exp, req->rq_oi.oi_oa, NULL, oti,
- NULL, NULL);
- if (err)
- CERROR("Failed to uncreate objid "LPX64" subobj "
- LPX64" on OST idx %d: rc = %d\n",
- src_oa->o_id, req->rq_oi.oi_oa->o_id,
- req->rq_idx, rc);
- }
- if (*lsmp == NULL)
- obd_free_memmd(exp, &set->set_oi->oi_md);
-done:
- if (oti && set->set_cookies) {
- oti->oti_logcookies = set->set_cookies;
- if (!set->set_cookie_sent) {
- oti_free_cookies(oti);
- src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
- } else {
- src_oa->o_valid |= OBD_MD_FLCOOKIE;
- }
- }
- RETURN(rc);
-}
-
-int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
-{
- int rc = 0;
- ENTRY;
-
- if (set == NULL)
- RETURN(0);
- LASSERT(set->set_exp);
- if (cfs_atomic_read(&set->set_completes))
- rc = create_done(set->set_exp, set, lsmp);
-
- lov_put_reqset(set);
- RETURN(rc);
-}
-
-int cb_create_update(void *cookie, int rc)
-{
- struct obd_info *oinfo = cookie;
- struct lov_request *lovreq;
-
- lovreq = container_of(oinfo, struct lov_request, rq_oi);
-
- if (CFS_FAIL_CHECK(OBD_FAIL_MDS_OSC_CREATE_FAIL))
- if (lovreq->rq_idx == cfs_fail_val)
- rc = -ENOTCONN;
-
- rc = lov_update_create_set(lovreq->rq_rqset, lovreq, rc);
- if (lov_set_finished(lovreq->rq_rqset, 0))
- lov_put_reqset(lovreq->rq_rqset);
- return rc;
-}
-
-int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
- struct lov_stripe_md **lsmp, struct obdo *src_oa,
- struct obd_trans_info *oti,
- struct lov_request_set **reqset)
-{
- struct lov_request_set *set;
- int rc = 0;
- ENTRY;
-
- OBD_ALLOC(set, sizeof(*set));
- if (set == NULL)
- RETURN(-ENOMEM);
- lov_init_set(set);
-
- set->set_exp = exp;
- set->set_oi = oinfo;
- set->set_oi->oi_md = *lsmp;
- set->set_oi->oi_oa = src_oa;
- set->set_oti = oti;
- lov_get_reqset(set);
-
- rc = qos_prep_create(exp, set);
- /* qos_shrink_lsm() may have allocated a new lsm */
- *lsmp = oinfo->oi_md;
- if (rc) {
- lov_fini_create_set(set, lsmp);
- lov_put_reqset(set);
- } else {
- *reqset = set;
- }
- RETURN(rc);
-}
-
static int common_attr_done(struct lov_request_set *set)
{
cfs_list_t *pos;
out_update:
lov_update_statfs(osfs, lov_sfs, success);
- qos_update(lov);
obd_putref(lovobd);
out:
lov_set_finished(set, 0)) {
lov_statfs_interpret(NULL, set, set->set_count !=
cfs_atomic_read(&set->set_success));
- if (lov->lov_qos.lq_statfs_in_progress)
- qos_statfs_done(lov);
}
RETURN(0);
return snprintf(page, count, "%s\n", lov->desc.ld_uuid.uuid);
}
-/* free priority (0-255): how badly user wants to choose empty osts */
-static int lov_rd_qos_priofree(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct obd_device *dev = (struct obd_device*) data;
- struct lov_obd *lov;
-
- LASSERT(dev != NULL);
- lov = &dev->u.lov;
- *eof = 1;
- return snprintf(page, count, "%d%%\n",
- (lov->lov_qos.lq_prio_free * 100 + 255) >> 8);
-}
-
-static int lov_wr_qos_priofree(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- struct obd_device *dev = (struct obd_device *)data;
- struct lov_obd *lov;
- int val, rc;
- LASSERT(dev != NULL);
-
- lov = &dev->u.lov;
- rc = lprocfs_write_helper(buffer, count, &val);
- if (rc)
- return rc;
-
- if (val > 100)
- return -EINVAL;
- lov->lov_qos.lq_prio_free = (val << 8) / 100;
- lov->lov_qos.lq_dirty = 1;
- lov->lov_qos.lq_reset = 1;
- return count;
-}
-
-static int lov_rd_qos_thresholdrr(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct obd_device *dev = (struct obd_device*) data;
- struct lov_obd *lov;
-
- LASSERT(dev != NULL);
- lov = &dev->u.lov;
- *eof = 1;
- return snprintf(page, count, "%d%%\n",
- (lov->lov_qos.lq_threshold_rr * 100 + 255) >> 8);
-}
-
-static int lov_wr_qos_thresholdrr(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- struct obd_device *dev = (struct obd_device *)data;
- struct lov_obd *lov;
- int val, rc;
- LASSERT(dev != NULL);
-
- lov = &dev->u.lov;
- rc = lprocfs_write_helper(buffer, count, &val);
- if (rc)
- return rc;
-
- if (val > 100 || val < 0)
- return -EINVAL;
-
- lov->lov_qos.lq_threshold_rr = (val << 8) / 100;
- lov->lov_qos.lq_dirty = 1;
- return count;
-}
-
-static int lov_rd_qos_maxage(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct obd_device *dev = (struct obd_device*) data;
- struct lov_obd *lov;
-
- LASSERT(dev != NULL);
- lov = &dev->u.lov;
- *eof = 1;
- return snprintf(page, count, "%u Sec\n", lov->desc.ld_qos_maxage);
-}
-
-static int lov_wr_qos_maxage(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- struct obd_device *dev = (struct obd_device *)data;
- struct lov_obd *lov;
- int val, rc;
- LASSERT(dev != NULL);
-
- lov = &dev->u.lov;
- rc = lprocfs_write_helper(buffer, count, &val);
- if (rc)
- return rc;
-
- if (val <= 0)
- return -EINVAL;
- lov->desc.ld_qos_maxage = val;
- return count;
-}
-
static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
{
struct obd_device *dev = p->private;
{ "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 },
{ "kbytesavail", lprocfs_rd_kbytesavail, 0, 0 },
{ "desc_uuid", lov_rd_desc_uuid, 0, 0 },
- { "qos_prio_free",lov_rd_qos_priofree, lov_wr_qos_priofree, 0 },
- { "qos_threshold_rr", lov_rd_qos_thresholdrr, lov_wr_qos_thresholdrr, 0 },
- { "qos_maxage", lov_rd_qos_maxage, lov_wr_qos_maxage, 0 },
{ 0 }
};
MODULES := osc
-osc-objs := osc_request.o lproc_osc.o osc_create.o osc_dev.o osc_object.o osc_page.o osc_lock.o osc_io.o osc_quota.o osc_cache.o
+osc-objs := osc_request.o lproc_osc.o osc_dev.o osc_object.o osc_page.o osc_lock.o osc_io.o osc_quota.o osc_cache.o
EXTRA_DIST = $(osc-objs:%.o=%.c) osc_internal.h osc_cl_internal.h
if LIBLUSTRE
noinst_LIBRARIES = libosc.a
-libosc_a_SOURCES = osc_request.c osc_create.c osc_internal.h osc_cl_internal.h osc_dev.c osc_object.c osc_page.c osc_lock.c osc_io.c osc_quota.c osc_cache.c
+libosc_a_SOURCES = osc_request.c osc_internal.h osc_cl_internal.h osc_dev.c osc_object.c osc_page.c osc_lock.c osc_io.c osc_quota.c osc_cache.c
libosc_a_CPPFLAGS = $(LLCPPFLAGS)
libosc_a_CFLAGS = $(LLCFLAGS)
macos_PROGRAMS = osc
osc_SOURCES = \
- osc_create.c \
osc_dev.c \
osc_object.c \
osc_page.c \
return count;
}
-static int osc_rd_create_count(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- struct obd_device *obd = data;
-
- if (obd == NULL)
- return 0;
-
- return snprintf(page, count, "%d\n",
- obd->u.cli.cl_oscc.oscc_grow_count);
-}
-
-/**
- * Set OSC creator's osc_creator::oscc_grow_count
- *
- * \param file proc file
- * \param buffer buffer containing the value
- * \param count buffer size
- * \param data obd device
- *
- * \retval \a count
- */
-static int osc_wr_create_count(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- struct obd_device *obd = data;
- int val, rc, i;
-
- if (obd == NULL)
- return 0;
-
- rc = lprocfs_write_helper(buffer, count, &val);
- if (rc)
- return rc;
-
- /* The MDT ALWAYS needs to limit the precreate count to
- * OST_MAX_PRECREATE, and the constant cannot be changed
- * because it is a value shared between the OSC and OST
- * that is the maximum possible number of objects that will
- * ever be handled by MDT->OST recovery processing.
- *
- * If the OST ever gets a request to delete more orphans,
- * this implies that something has gone badly on the MDT
- * and the OST will refuse to delete so much data from the
- * filesystem as a safety measure. */
- if (val < OST_MIN_PRECREATE || val > OST_MAX_PRECREATE)
- return -ERANGE;
- if (val > obd->u.cli.cl_oscc.oscc_max_grow_count)
- return -ERANGE;
-
- for (i = 1; (i << 1) <= val; i <<= 1)
- ;
- obd->u.cli.cl_oscc.oscc_grow_count = i;
-
- return count;
-}
-
-/**
- * Read OSC creator's osc_creator::oscc_max_grow_count
- *
- * \param page buffer to hold the returning string
- * \param start
- * \param off
- * \param count
- * \param eof
- * proc read function parameters, please refer to kernel
- * code fs/proc/generic.c proc_file_read()
- * \param data obd device
- *
- * \retval number of characters printed.
- */
-static int osc_rd_max_create_count(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct obd_device *obd = data;
-
- if (obd == NULL)
- return 0;
-
- return snprintf(page, count, "%d\n",
- obd->u.cli.cl_oscc.oscc_max_grow_count);
-}
-
-/**
- * Set OSC creator's osc_creator::oscc_max_grow_count
- *
- * \param file proc file
- * \param buffer buffer containing the value
- * \param count buffer size
- * \param data obd device
- *
- * \retval \a count
- */
-static int osc_wr_max_create_count(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- struct obd_device *obd = data;
- int val, rc;
-
- if (obd == NULL)
- return 0;
-
- rc = lprocfs_write_helper(buffer, count, &val);
- if (rc)
- return rc;
-
- if (val < 0)
- return -ERANGE;
- if (val > OST_MAX_PRECREATE)
- return -ERANGE;
-
- if (obd->u.cli.cl_oscc.oscc_grow_count > val)
- obd->u.cli.cl_oscc.oscc_grow_count = val;
-
- obd->u.cli.cl_oscc.oscc_max_grow_count = val;
-
- return count;
-}
-
-static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct obd_device *obd = data;
-
- if (obd == NULL)
- return 0;
-
- return snprintf(page, count, LPU64"\n",
- obd->u.cli.cl_oscc.oscc_next_id);
-}
-
-static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct obd_device *obd = data;
-
- if (obd == NULL)
- return 0;
-
- return snprintf(page, count, LPU64"\n",
- obd->u.cli.cl_oscc.oscc_last_id);
-}
-
static int osc_rd_checksum(char *page, char **start, off_t off, int count,
int *eof, void *data)
{
{ "cur_lost_grant_bytes", osc_rd_cur_lost_grant_bytes, 0, 0},
{ "grant_shrink_interval", osc_rd_grant_shrink_interval,
osc_wr_grant_shrink_interval, 0 },
- { "create_count", osc_rd_create_count, osc_wr_create_count, 0 },
- { "max_create_count", osc_rd_max_create_count,
- osc_wr_max_create_count, 0},
- { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
- { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
{ "checksums", osc_rd_checksum, osc_wr_checksum, 0 },
{ "checksum_type", osc_rd_checksum_type, osc_wd_checksum_type, 0 },
{ "resend_count", osc_rd_resend_count, osc_wr_resend_count, 0},
+++ /dev/null
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, Whamcloud, Inc.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/osc/osc_create.c
- * For testing and management it is treated as an obd_device,
- * although * it does not export a full OBD method table (the
- * requests are coming * in over the wire, so object target modules
- * do not have a full * method table.)
- *
- * Author: Peter Braam <braam@clusterfs.com>
- */
-
-#define DEBUG_SUBSYSTEM S_OSC
-
-#ifdef __KERNEL__
-# include <libcfs/libcfs.h>
-#else /* __KERNEL__ */
-# include <liblustre.h>
-#endif
-
-#ifdef __CYGWIN__
-# include <ctype.h>
-#endif
-
-#include <lustre_dlm.h>
-#include <obd_class.h>
-#include "osc_internal.h"
-
-/* XXX need AT adjust ? */
-#define osc_create_timeout (obd_timeout / 2)
-
-struct osc_create_async_args {
- struct osc_creator *rq_oscc;
- struct lov_stripe_md *rq_lsm;
- struct obd_info *rq_oinfo;
- int rq_grow_count;
-};
-
-static int oscc_internal_create(struct osc_creator *oscc);
-static int handle_async_create(struct ptlrpc_request *req, int rc);
-
-static int osc_interpret_create(const struct lu_env *env,
- struct ptlrpc_request *req, void *data, int rc)
-{
- struct osc_create_async_args *args = ptlrpc_req_async_args(req);
- struct osc_creator *oscc = args->rq_oscc;
- struct ost_body *body = NULL;
- struct ptlrpc_request *fake_req, *pos;
- ENTRY;
-
- if (req->rq_repmsg) {
- body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
- if (body == NULL && rc == 0)
- rc = -EPROTO;
- }
-
- LASSERT(oscc && (oscc->oscc_obd != LP_POISON));
-
- cfs_spin_lock(&oscc->oscc_lock);
- oscc->oscc_flags &= ~OSCC_FLAG_CREATING;
- switch (rc) {
- case 0: {
- if (body) {
- int diff =ostid_id(&body->oa.o_oi)- oscc->oscc_last_id;
-
- /* oscc_internal_create() stores the original value of
- * grow_count in osc_create_async_args::rq_grow_count.
- * We can't compare against oscc_grow_count directly,
- * because it may have been increased while the RPC
- * is in flight, so we would always find ourselves
- * having created fewer objects and decreasing the
- * precreate request size. b=18577 */
- if (diff < args->rq_grow_count) {
- /* the OST has not managed to create all the
- * objects we asked for */
- oscc->oscc_grow_count = max(diff,
- OST_MIN_PRECREATE);
- /* don't bump grow_count next time */
- oscc->oscc_flags |= OSCC_FLAG_LOW;
- } else {
- /* the OST is able to keep up with the work,
- * we could consider increasing grow_count
- * next time if needed */
- oscc->oscc_flags &= ~OSCC_FLAG_LOW;
- }
- oscc->oscc_last_id = ostid_id(&body->oa.o_oi);
- }
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
- case -EROFS:
- oscc->oscc_flags |= OSCC_FLAG_RDONLY;
- case -ENOSPC:
- case -EFBIG:
- if (rc != -EROFS) {
- oscc->oscc_flags |= OSCC_FLAG_NOSPC;
- if (body && rc == -ENOSPC) {
- oscc->oscc_last_id = body->oa.o_id;
- oscc->oscc_grow_count = OST_MIN_PRECREATE;
-
- if ((body->oa.o_valid & OBD_MD_FLFLAGS) &&
- (body->oa.o_flags & OBD_FL_NOSPC_BLK))
- oscc->oscc_flags |= OSCC_FLAG_NOSPC_BLK;
- else
- rc = 0;
- }
- }
- cfs_spin_unlock(&oscc->oscc_lock);
- DEBUG_REQ(D_INODE, req, "OST out of space, flagging");
- break;
- case -EIO: {
- /* filter always set body->oa.o_id as the last_id
- * of filter (see filter_handle_precreate for detail)*/
- if (body && body->oa.o_id > oscc->oscc_last_id)
- oscc->oscc_last_id = body->oa.o_id;
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
- case -EINTR:
- case -EWOULDBLOCK: {
- /* aka EAGAIN we should not delay create if import failed -
- * this avoid client stick in create and avoid race with
- * delorphan */
- /* EINTR say - old create request is killed due mds<>ost
- * eviction - OSCC_FLAG_RECOVERING can already set due
- * IMP_DISCONN event */
- oscc->oscc_flags |= OSCC_FLAG_RECOVERING;
- /* oscc->oscc_grow_count = OST_MIN_PRECREATE; */
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
- default: {
- oscc->oscc_flags |= OSCC_FLAG_RECOVERING;
- oscc->oscc_grow_count = OST_MIN_PRECREATE;
- cfs_spin_unlock(&oscc->oscc_lock);
- DEBUG_REQ(D_ERROR, req,
- "Unknown rc %d from async create: failing oscc", rc);
- ptlrpc_fail_import(req->rq_import,
- lustre_msg_get_conn_cnt(req->rq_reqmsg));
- }
- }
-
- CDEBUG(D_HA, "preallocated through id "LPU64" (next to use "LPU64")\n",
- oscc->oscc_last_id, oscc->oscc_next_id);
-
- cfs_spin_lock(&oscc->oscc_lock);
- cfs_list_for_each_entry_safe(fake_req, pos,
- &oscc->oscc_wait_create_list, rq_list) {
- if (handle_async_create(fake_req, rc) == -EAGAIN) {
- oscc_internal_create(oscc);
- /* sending request should be never fail because
- * osc use preallocated requests pool */
- GOTO(exit_wakeup, rc);
- }
- }
- cfs_spin_unlock(&oscc->oscc_lock);
-
-exit_wakeup:
- cfs_waitq_signal(&oscc->oscc_waitq);
- RETURN(rc);
-}
-
-static int oscc_internal_create(struct osc_creator *oscc)
-{
- struct osc_create_async_args *args;
- struct ptlrpc_request *request;
- struct ost_body *body;
- ENTRY;
-
- LASSERT_SPIN_LOCKED(&oscc->oscc_lock);
-
- /* Do not check for a degraded OST here - bug21563/bug18539 */
- if (oscc->oscc_flags & OSCC_FLAG_RECOVERING) {
- cfs_spin_unlock(&oscc->oscc_lock);
- RETURN(0);
- }
-
- /* we need check it before OSCC_FLAG_CREATING - because need
- * see lower number of precreate objects */
- if (oscc->oscc_grow_count < oscc->oscc_max_grow_count &&
- ((oscc->oscc_flags & OSCC_FLAG_LOW) == 0) &&
- (__s64)(oscc->oscc_last_id - oscc->oscc_next_id) <=
- (oscc->oscc_grow_count / 4 + 1)) {
- oscc->oscc_flags |= OSCC_FLAG_LOW;
- oscc->oscc_grow_count *= 2;
- }
-
- if (oscc->oscc_flags & OSCC_FLAG_CREATING) {
- cfs_spin_unlock(&oscc->oscc_lock);
- RETURN(0);
- }
-
- if (oscc->oscc_grow_count > oscc->oscc_max_grow_count / 2)
- oscc->oscc_grow_count = oscc->oscc_max_grow_count / 2;
-
- oscc->oscc_flags |= OSCC_FLAG_CREATING;
- cfs_spin_unlock(&oscc->oscc_lock);
-
- request = ptlrpc_request_alloc_pack(oscc->oscc_obd->u.cli.cl_import,
- &RQF_OST_CREATE,
- LUSTRE_OST_VERSION, OST_CREATE);
- if (request == NULL) {
- cfs_spin_lock(&oscc->oscc_lock);
- oscc->oscc_flags &= ~OSCC_FLAG_CREATING;
- cfs_spin_unlock(&oscc->oscc_lock);
- RETURN(-ENOMEM);
- }
-
- request->rq_request_portal = OST_CREATE_PORTAL;
- ptlrpc_at_set_req_timeout(request);
- body = req_capsule_client_get(&request->rq_pill, &RMF_OST_BODY);
- args = ptlrpc_req_async_args(request);
- args->rq_oscc = oscc;
-
- cfs_spin_lock(&oscc->oscc_lock);
- args->rq_grow_count = oscc->oscc_grow_count;
-
- if (likely(fid_seq_is_mdt(oscc->oscc_oa.o_seq))) {
- body->oa.o_oi.oi_seq = oscc->oscc_oa.o_seq;
- body->oa.o_oi.oi_id = oscc->oscc_last_id +
- oscc->oscc_grow_count;
- } else {
- /*Just warning here currently, since not sure how fid-on-ost
- *will be implemented here */
- CWARN("o_seq: "LPU64" is not indicate any MDTs.\n",
- oscc->oscc_oa.o_seq);
- }
- cfs_spin_unlock(&oscc->oscc_lock);
-
- body->oa.o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
- CDEBUG(D_RPCTRACE, "prealloc through id "LPU64" (last seen "LPU64")\n",
- body->oa.o_id, oscc->oscc_last_id);
-
- /* we should not resend create request - anyway we will have delorphan
- * and kill these objects */
- request->rq_no_delay = request->rq_no_resend = 1;
- ptlrpc_request_set_replen(request);
-
- request->rq_interpret_reply = osc_interpret_create;
- ptlrpcd_add_req(request, PDL_POLICY_ROUND, -1);
-
- RETURN(0);
-}
-
-static int oscc_has_objects_nolock(struct osc_creator *oscc, int count)
-{
- return ((__s64)(oscc->oscc_last_id - oscc->oscc_next_id) >= count);
-}
-
-static int oscc_has_objects(struct osc_creator *oscc, int count)
-{
- int have_objs;
-
- cfs_spin_lock(&oscc->oscc_lock);
- have_objs = oscc_has_objects_nolock(oscc, count);
- cfs_spin_unlock(&oscc->oscc_lock);
-
- return have_objs;
-}
-
-static int oscc_wait_for_objects(struct osc_creator *oscc, int count)
-{
- int have_objs;
- int ost_unusable;
-
- ost_unusable = oscc->oscc_obd->u.cli.cl_import->imp_invalid;
-
- cfs_spin_lock(&oscc->oscc_lock);
- ost_unusable |= (OSCC_FLAG_NOSPC | OSCC_FLAG_RDONLY |
- OSCC_FLAG_EXITING) & oscc->oscc_flags;
- have_objs = oscc_has_objects_nolock(oscc, count);
-
- if (!ost_unusable && !have_objs)
- /* they release lock himself */
- have_objs = oscc_internal_create(oscc);
- else
- cfs_spin_unlock(&oscc->oscc_lock);
-
- return have_objs || ost_unusable;
-}
-
-static int oscc_precreate(struct osc_creator *oscc)
-{
- struct l_wait_info lwi;
- int rc = 0;
- ENTRY;
-
- if (oscc_has_objects(oscc, oscc->oscc_grow_count / 2))
- RETURN(0);
-
- /* we should be not block forever - because client's create rpc can
- * stick in mds for long time and forbid client reconnect */
- lwi = LWI_TIMEOUT(cfs_timeout_cap(cfs_time_seconds(osc_create_timeout)),
- NULL, NULL);
-
- rc = l_wait_event(oscc->oscc_waitq, oscc_wait_for_objects(oscc, 1), &lwi);
- RETURN(rc);
-}
-
-static int oscc_in_sync(struct osc_creator *oscc)
-{
- int sync;
-
- cfs_spin_lock(&oscc->oscc_lock);
- sync = oscc->oscc_flags & OSCC_FLAG_SYNC_IN_PROGRESS;
- cfs_spin_unlock(&oscc->oscc_lock);
-
- return sync;
-}
-
-/* decide if the OST has remaining object, return value :
- 0 : the OST has remaining objects, may or may not send precreation RPC.
- 1 : the OST has no remaining object, and the sent precreation RPC
- has not been completed yet.
- 2 : the OST has no remaining object, and will not get any for
- a potentially very long time
- 1000 : unusable
- */
-int osc_precreate(struct obd_export *exp)
-{
- struct osc_creator *oscc = &exp->exp_obd->u.cli.cl_oscc;
- struct obd_import *imp = exp->exp_imp_reverse;
- int rc;
- ENTRY;
-
- LASSERT(oscc != NULL);
- if (imp != NULL && imp->imp_deactive)
- GOTO(out_nolock, rc = 1000);
-
- /* Handle critical states first */
- cfs_spin_lock(&oscc->oscc_lock);
- if (oscc->oscc_flags & OSCC_FLAG_NOSPC_BLK ||
- oscc->oscc_flags & OSCC_FLAG_RDONLY ||
- oscc->oscc_flags & OSCC_FLAG_EXITING)
- GOTO(out, rc = 1000);
-
- if ((oscc->oscc_flags & OSCC_FLAG_RECOVERING) ||
- (oscc->oscc_flags & OSCC_FLAG_DEGRADED))
- GOTO(out, rc = 2);
-
- if (oscc_has_objects_nolock(oscc, oscc->oscc_grow_count / 2))
- GOTO(out, rc = 0);
-
- /* Return 0, if we have at least one object - bug 22884 */
- rc = oscc_has_objects_nolock(oscc, 1) ? 0 : 1;
-
- if (oscc->oscc_flags & OSCC_FLAG_NOSPC)
- GOTO(out, (rc == 0) ? 0 : 1000);
-
- /* Do not check for OSCC_FLAG_CREATING flag here, let
- * osc_precreate() call oscc_internal_create() and
- * adjust oscc_grow_count bug21563 */
- if (oscc->oscc_flags & OSCC_FLAG_SYNC_IN_PROGRESS)
- GOTO(out, rc);
-
- if (oscc_internal_create(oscc))
- GOTO(out_nolock, rc = 1000);
-
- RETURN(rc);
-out:
- cfs_spin_unlock(&oscc->oscc_lock);
-out_nolock:
- return rc;
-}
-
-static int handle_async_create(struct ptlrpc_request *req, int rc)
-{
- struct osc_create_async_args *args = ptlrpc_req_async_args(req);
- struct osc_creator *oscc = args->rq_oscc;
- struct lov_stripe_md *lsm = args->rq_lsm;
- struct obd_info *oinfo = args->rq_oinfo;
- struct obdo *oa = oinfo->oi_oa;
-
- LASSERT_SPIN_LOCKED(&oscc->oscc_lock);
-
- if(rc)
- GOTO(out_wake, rc);
-
- /* Handle the critical type errors first.
- * Should we also test cl_import state as well ? */
- if (oscc->oscc_flags & OSCC_FLAG_EXITING)
- GOTO(out_wake, rc = -EIO);
-
- if (oscc->oscc_flags & OSCC_FLAG_NOSPC_BLK)
- GOTO(out_wake, rc = -ENOSPC);
-
- if (oscc->oscc_flags & OSCC_FLAG_RDONLY)
- GOTO(out_wake, rc = -EROFS);
-
- /* should be try wait until recovery finished */
- if((oscc->oscc_flags & OSCC_FLAG_RECOVERING) ||
- (oscc->oscc_flags & OSCC_FLAG_DEGRADED))
- RETURN(-EAGAIN);
-
- if (oscc_has_objects_nolock(oscc, 1)) {
- memcpy(oa, &oscc->oscc_oa, sizeof(*oa));
- oa->o_id = oscc->oscc_next_id;
- lsm->lsm_object_id = oscc->oscc_next_id;
- oscc->oscc_next_id++;
-
- CDEBUG(D_RPCTRACE, " set oscc_next_id = "LPU64"\n",
- oscc->oscc_next_id);
- GOTO(out_wake, rc = 0);
- }
-
- /* we don't have objects now - continue wait */
- RETURN(-EAGAIN);
-
-out_wake:
-
- rc = oinfo->oi_cb_up(oinfo, rc);
- ptlrpc_fakereq_finished(req);
-
- RETURN(rc);
-}
-
-static int async_create_interpret(const struct lu_env *env,
- struct ptlrpc_request *req, void *data,
- int rc)
-{
- struct osc_create_async_args *args = ptlrpc_req_async_args(req);
- struct osc_creator *oscc = args->rq_oscc;
- int ret;
-
- cfs_spin_lock(&oscc->oscc_lock);
- ret = handle_async_create(req, rc);
- cfs_spin_unlock(&oscc->oscc_lock);
-
- return ret;
-}
-
-int osc_create_async(struct obd_export *exp, struct obd_info *oinfo,
- struct lov_stripe_md **ea, struct obd_trans_info *oti)
-{
- int rc;
- struct ptlrpc_request *fake_req;
- struct osc_create_async_args *args;
- struct osc_creator *oscc = &exp->exp_obd->u.cli.cl_oscc;
- struct obdo *oa = oinfo->oi_oa;
- ENTRY;
-
- if ((oa->o_valid & OBD_MD_FLGROUP) && !fid_seq_is_mdt(oa->o_seq)) {
- rc = osc_real_create(exp, oinfo->oi_oa, ea, oti);
- rc = oinfo->oi_cb_up(oinfo, rc);
- RETURN(rc);
- }
-
- if ((oa->o_valid & OBD_MD_FLFLAGS) &&
- oa->o_flags == OBD_FL_RECREATE_OBJS) {
- rc = osc_real_create(exp, oinfo->oi_oa, ea, oti);
- rc = oinfo->oi_cb_up(oinfo, rc);
- RETURN(rc);
- }
-
- LASSERT((*ea) != NULL);
-
- fake_req = ptlrpc_prep_fakereq(oscc->oscc_obd->u.cli.cl_import,
- osc_create_timeout,
- async_create_interpret);
- if (fake_req == NULL) {
- rc = oinfo->oi_cb_up(oinfo, -ENOMEM);
- RETURN(-ENOMEM);
- }
-
- args = ptlrpc_req_async_args(fake_req);
- CLASSERT(sizeof(*args) <= sizeof(fake_req->rq_async_args));
-
- args->rq_oscc = oscc;
- args->rq_lsm = *ea;
- args->rq_oinfo = oinfo;
-
- cfs_spin_lock(&oscc->oscc_lock);
- /* try fast path */
- rc = handle_async_create(fake_req, 0);
- if (rc == -EAGAIN) {
- /* We don't have any objects, wait until we get a reply. */
- ptlrpcd_add_req(fake_req, PDL_POLICY_ROUND, -1);
- cfs_list_add(&fake_req->rq_list,
- &oscc->oscc_wait_create_list);
- cfs_spin_unlock(&oscc->oscc_lock);
- /* EAGAIN mean - request is delayed */
- rc = 0;
- } else {
- cfs_spin_unlock(&oscc->oscc_lock);
- /* need free request if was error hit or
- * objects already allocated */
- ptlrpc_req_finished(fake_req);
- }
-
- RETURN(rc);
-}
-
-int osc_create(const struct lu_env *env, struct obd_export *exp,
- struct obdo *oa, struct lov_stripe_md **ea,
- struct obd_trans_info *oti)
-{
- struct osc_creator *oscc = &exp->exp_obd->u.cli.cl_oscc;
- struct obd_import *imp = exp->exp_obd->u.cli.cl_import;
- struct lov_stripe_md *lsm;
- int del_orphan = 0, rc = 0;
- ENTRY;
-
- LASSERT(oa);
- LASSERT(ea);
- LASSERT(oa->o_valid & OBD_MD_FLGROUP);
-
- if ((oa->o_valid & OBD_MD_FLFLAGS) &&
- oa->o_flags == OBD_FL_RECREATE_OBJS) {
- RETURN(osc_real_create(exp, oa, ea, oti));
- }
-
- if (!fid_seq_is_mdt(oa->o_seq))
- RETURN(osc_real_create(exp, oa, ea, oti));
-
- /* this is the special case where create removes orphans */
- if (oa->o_valid & OBD_MD_FLFLAGS &&
- oa->o_flags == OBD_FL_DELORPHAN) {
- cfs_spin_lock(&oscc->oscc_lock);
- if (oscc->oscc_flags & OSCC_FLAG_SYNC_IN_PROGRESS) {
- cfs_spin_unlock(&oscc->oscc_lock);
- RETURN(-EBUSY);
- }
- if (!(oscc->oscc_flags & OSCC_FLAG_RECOVERING)) {
- cfs_spin_unlock(&oscc->oscc_lock);
- RETURN(0);
- }
-
- oscc->oscc_flags |= OSCC_FLAG_SYNC_IN_PROGRESS;
- /* seting flag LOW we prevent extra grow precreate size
- * and enforce use last assigned size */
- oscc->oscc_flags |= OSCC_FLAG_LOW;
- cfs_spin_unlock(&oscc->oscc_lock);
- CDEBUG(D_HA, "%s: oscc recovery started - delete to "LPU64"\n",
- oscc->oscc_obd->obd_name, oscc->oscc_next_id - 1);
-
- del_orphan = 1;
-
- /* delete from next_id on up */
- oa->o_valid |= OBD_MD_FLID;
- oa->o_id = oscc->oscc_next_id - 1;
-
- rc = osc_real_create(exp, oa, ea, NULL);
-
- cfs_spin_lock(&oscc->oscc_lock);
- oscc->oscc_flags &= ~OSCC_FLAG_SYNC_IN_PROGRESS;
- if (rc == 0 || rc == -ENOSPC) {
- struct obd_connect_data *ocd;
-
- if (rc == -ENOSPC) {
- oscc->oscc_flags |= OSCC_FLAG_NOSPC;
- if ((oa->o_valid & OBD_MD_FLFLAGS) &&
- (oa->o_flags & OBD_FL_NOSPC_BLK))
- oscc->oscc_flags |= OSCC_FLAG_NOSPC_BLK;
- }
- oscc->oscc_flags &= ~OSCC_FLAG_RECOVERING;
-
- oscc->oscc_last_id = oa->o_id;
- ocd = &imp->imp_connect_data;
- if (ocd->ocd_connect_flags & OBD_CONNECT_SKIP_ORPHAN) {
- /*
- * The OST reports back in oa->o_id from where
- * we should restart in order to skip orphan
- * objects
- */
- CDEBUG(D_HA, "%s: Skip orphan set, reset last "
- "objid\n", oscc->oscc_obd->obd_name);
- oscc->oscc_next_id = oa->o_id + 1;
- }
-
- /* sanity check for next objid. see bug 17025 */
- LASSERT(oscc->oscc_next_id == oa->o_id + 1);
-
- CDEBUG(D_HA, "%s: oscc recovery finished, last_id: "
- LPU64", rc: %d\n", oscc->oscc_obd->obd_name,
- oscc->oscc_last_id, rc);
- } else {
- CDEBUG(D_ERROR, "%s: oscc recovery failed: %d\n",
- oscc->oscc_obd->obd_name, rc);
- }
-
- cfs_waitq_signal(&oscc->oscc_waitq);
- cfs_spin_unlock(&oscc->oscc_lock);
-
- if (rc < 0)
- RETURN(rc);
- }
-
- lsm = *ea;
- if (lsm == NULL) {
- rc = obd_alloc_memmd(exp, &lsm);
- if (rc < 0)
- RETURN(rc);
- }
-
- while (1) {
- if (oscc_in_sync(oscc))
- CDEBUG(D_HA,"%s: oscc recovery in progress, waiting\n",
- oscc->oscc_obd->obd_name);
-
- rc = oscc_precreate(oscc);
- if (rc)
- CDEBUG(D_HA,"%s: error create %d\n",
- oscc->oscc_obd->obd_name, rc);
-
- cfs_spin_lock(&oscc->oscc_lock);
-
- /* wakeup but recovery did not finished */
- if ((oscc->oscc_obd->u.cli.cl_import->imp_invalid) ||
- (oscc->oscc_flags & OSCC_FLAG_RECOVERING)) {
- rc = -EIO;
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
-
- if (oscc->oscc_flags & OSCC_FLAG_NOSPC_BLK) {
- rc = -ENOSPC;
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
-
- if (oscc->oscc_flags & OSCC_FLAG_RDONLY) {
- rc = -EROFS;
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
-
- // Should we report -EIO error ?
- if (oscc->oscc_flags & OSCC_FLAG_EXITING) {
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
-
- /**
- * If this is DELORPHAN process, no need create object here,
- * otherwise this will create a gap of object id, and MDS
- * might create some orphan log (mds_lov_update_objids), then
- * remove objects wrongly on OST. Bug 21379.
- */
- if (oa->o_valid & OBD_MD_FLFLAGS &&
- oa->o_flags == OBD_FL_DELORPHAN) {
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
-
- if (oscc_has_objects_nolock(oscc, 1)) {
- memcpy(oa, &oscc->oscc_oa, sizeof(*oa));
- oa->o_id = oscc->oscc_next_id;
- lsm->lsm_object_id = oscc->oscc_next_id;
- *ea = lsm;
- oscc->oscc_next_id++;
- cfs_spin_unlock(&oscc->oscc_lock);
-
- CDEBUG(D_RPCTRACE, "%s: set oscc_next_id = "LPU64"\n",
- exp->exp_obd->obd_name, oscc->oscc_next_id);
- break;
- }
-
- if (oscc->oscc_flags & OSCC_FLAG_NOSPC) {
- rc = -ENOSPC;
- cfs_spin_unlock(&oscc->oscc_lock);
- break;
- }
-
- cfs_spin_unlock(&oscc->oscc_lock);
- }
-
- if (rc == 0) {
- CDEBUG(D_INFO, "%s: returning objid "LPU64"\n",
- obd2cli_tgt(oscc->oscc_obd), lsm->lsm_object_id);
- } else {
- if (*ea == NULL)
- obd_free_memmd(exp, &lsm);
- if (del_orphan != 0 && rc != -EIO)
- /* Ignore non-IO precreate error for clear orphan */
- rc = 0;
- }
- RETURN(rc);
-}
-
-void oscc_init(struct obd_device *obd)
-{
- struct osc_creator *oscc;
-
- if (obd == NULL)
- return;
-
- oscc = &obd->u.cli.cl_oscc;
-
- memset(oscc, 0, sizeof(*oscc));
-
- cfs_waitq_init(&oscc->oscc_waitq);
- cfs_spin_lock_init(&oscc->oscc_lock);
- oscc->oscc_obd = obd;
- oscc->oscc_grow_count = OST_MIN_PRECREATE;
- oscc->oscc_max_grow_count = OST_MAX_PRECREATE;
-
- oscc->oscc_next_id = 2;
- oscc->oscc_last_id = 1;
- oscc->oscc_flags |= OSCC_FLAG_RECOVERING;
-
- CFS_INIT_LIST_HEAD(&oscc->oscc_wait_create_list);
-
- /* XXX the export handle should give the oscc the last object */
- /* oed->oed_oscc.oscc_last_id = exph->....; */
-}
-
-void oscc_fini(struct obd_device *obd)
-{
- struct osc_creator *oscc = &obd->u.cli.cl_oscc;
- ENTRY;
-
-
- cfs_spin_lock(&oscc->oscc_lock);
- oscc->oscc_flags &= ~OSCC_FLAG_RECOVERING;
- oscc->oscc_flags |= OSCC_FLAG_EXITING;
- cfs_spin_unlock(&oscc->oscc_lock);
-}
int ocw_rc;
};
-#define OSCC_FLAG_RECOVERING 0x01
-#define OSCC_FLAG_CREATING 0x02
-#define OSCC_FLAG_NOSPC 0x04 /* can't create more objects on OST */
-#define OSCC_FLAG_SYNC_IN_PROGRESS 0x08 /* only allow one thread to sync */
-#define OSCC_FLAG_LOW 0x10
-#define OSCC_FLAG_EXITING 0x20
-#define OSCC_FLAG_DEGRADED 0x40
-#define OSCC_FLAG_RDONLY 0x80
-#define OSCC_FLAG_NOSPC_BLK 0x100 /* no more block space on OST */
-
-int osc_precreate(struct obd_export *exp);
int osc_create(const struct lu_env *env, struct obd_export *exp,
struct obdo *oa, struct lov_stripe_md **ea,
struct obd_trans_info *oti);
-int osc_create_async(struct obd_export *exp, struct obd_info *oinfo,
- struct lov_stripe_md **ea, struct obd_trans_info *oti);
int osc_real_create(struct obd_export *exp, struct obdo *oa,
struct lov_stripe_md **ea, struct obd_trans_info *oti);
-void oscc_init(struct obd_device *obd);
void osc_wake_cache_waiters(struct client_obd *cli);
int osc_shrink_grant_to_target(struct client_obd *cli, long target);
void osc_update_next_shrink(struct client_obd *cli);
return 0;
}
+int osc_create(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa, struct lov_stripe_md **ea,
+ struct obd_trans_info *oti)
+{
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(oa);
+ LASSERT(ea);
+ LASSERT(oa->o_valid & OBD_MD_FLGROUP);
+
+ if ((oa->o_valid & OBD_MD_FLFLAGS) &&
+ oa->o_flags == OBD_FL_RECREATE_OBJS) {
+ RETURN(osc_real_create(exp, oa, ea, oti));
+ }
+
+ if (!fid_seq_is_mdt(oa->o_seq))
+ RETURN(osc_real_create(exp, oa, ea, oti));
+
+ /* we should not get here anymore */
+ LBUG();
+
+ RETURN(rc);
+}
+
/* Destroy requests can be async always on the client, and we don't even really
* care about the return code since the client cannot do anything at all about
* a destroy failure.
struct ptlrpc_request *req,
struct osc_async_args *aa, int rc)
{
- struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
struct obd_statfs *msfs;
- __u64 used;
ENTRY;
if (rc == -EBADR)
GOTO(out, rc = -EPROTO);
}
- /* Reinitialize the RDONLY and DEGRADED flags at the client
- * on each statfs, so they don't stay set permanently. */
- cfs_spin_lock(&cli->cl_oscc.oscc_lock);
-
- if (unlikely(msfs->os_state & OS_STATE_DEGRADED))
- cli->cl_oscc.oscc_flags |= OSCC_FLAG_DEGRADED;
- else if (unlikely(cli->cl_oscc.oscc_flags & OSCC_FLAG_DEGRADED))
- cli->cl_oscc.oscc_flags &= ~OSCC_FLAG_DEGRADED;
-
- if (unlikely(msfs->os_state & OS_STATE_READONLY))
- cli->cl_oscc.oscc_flags |= OSCC_FLAG_RDONLY;
- else if (unlikely(cli->cl_oscc.oscc_flags & OSCC_FLAG_RDONLY))
- cli->cl_oscc.oscc_flags &= ~OSCC_FLAG_RDONLY;
-
- /* Add a bit of hysteresis so this flag isn't continually flapping,
- * and ensure that new files don't get extremely fragmented due to
- * only a small amount of available space in the filesystem.
- * We want to set the NOSPC flag when there is less than ~0.1% free
- * and clear it when there is at least ~0.2% free space, so:
- * avail < ~0.1% max max = avail + used
- * 1025 * avail < avail + used used = blocks - free
- * 1024 * avail < used
- * 1024 * avail < blocks - free
- * avail < ((blocks - free) >> 10)
- *
- * On very large disk, say 16TB 0.1% will be 16 GB. We don't want to
- * lose that amount of space so in those cases we report no space left
- * if their is less than 1 GB left. */
- used = min_t(__u64,(msfs->os_blocks - msfs->os_bfree) >> 10, 1 << 30);
- if (unlikely(((cli->cl_oscc.oscc_flags & OSCC_FLAG_NOSPC) == 0) &&
- ((msfs->os_ffree < 32) || (msfs->os_bavail < used))))
- cli->cl_oscc.oscc_flags |= OSCC_FLAG_NOSPC;
- else if (unlikely(((cli->cl_oscc.oscc_flags & OSCC_FLAG_NOSPC) != 0) &&
- (msfs->os_ffree > 64) &&
- (msfs->os_bavail > (used << 1)))) {
- cli->cl_oscc.oscc_flags &= ~(OSCC_FLAG_NOSPC |
- OSCC_FLAG_NOSPC_BLK);
- }
-
- if (unlikely(((cli->cl_oscc.oscc_flags & OSCC_FLAG_NOSPC) != 0) &&
- (msfs->os_bavail < used)))
- cli->cl_oscc.oscc_flags |= OSCC_FLAG_NOSPC_BLK;
-
- cfs_spin_unlock(&cli->cl_oscc.oscc_lock);
-
*aa->aa_oi->oi_osfs = *msfs;
out:
rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
RETURN(-EINVAL);
}
-static int osc_setinfo_mds_connect_import(struct obd_import *imp)
-{
- struct llog_ctxt *ctxt;
- int rc = 0;
- ENTRY;
-
- ctxt = llog_get_context(imp->imp_obd, LLOG_MDS_OST_ORIG_CTXT);
- if (ctxt) {
- rc = llog_initiator_connect(ctxt);
- llog_ctxt_put(ctxt);
- } else {
- /* XXX return an error? skip setting below flags? */
- }
-
- cfs_spin_lock(&imp->imp_lock);
- imp->imp_server_timeout = 1;
- imp->imp_pingable = 1;
- cfs_spin_unlock(&imp->imp_lock);
- CDEBUG(D_RPCTRACE, "pinging OST %s\n", obd2cli_tgt(imp->imp_obd));
-
- RETURN(rc);
-}
-
-static int osc_setinfo_mds_conn_interpret(const struct lu_env *env,
- struct ptlrpc_request *req,
- void *aa, int rc)
-{
- ENTRY;
- if (rc != 0)
- RETURN(rc);
-
- RETURN(osc_setinfo_mds_connect_import(req->rq_import));
-}
-
static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
obd_count keylen, void *key, obd_count vallen,
void *val, struct ptlrpc_request_set *set)
OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
- if (KEY_IS(KEY_NEXT_ID)) {
- obd_id new_val;
- struct osc_creator *oscc = &obd->u.cli.cl_oscc;
-
- if (vallen != sizeof(obd_id))
- RETURN(-ERANGE);
- if (val == NULL)
- RETURN(-EINVAL);
-
- if (vallen != sizeof(obd_id))
- RETURN(-EINVAL);
-
- /* avoid race between allocate new object and set next id
- * from ll_sync thread */
- cfs_spin_lock(&oscc->oscc_lock);
- new_val = *((obd_id*)val) + 1;
- if (new_val > oscc->oscc_next_id)
- oscc->oscc_next_id = new_val;
- cfs_spin_unlock(&oscc->oscc_lock);
- CDEBUG(D_HA, "%s: set oscc_next_id = "LPU64"\n",
- exp->exp_obd->obd_name,
- obd->u.cli.cl_oscc.oscc_next_id);
-
- RETURN(0);
- }
-
if (KEY_IS(KEY_CHECKSUM)) {
if (vallen != sizeof(int))
RETURN(-EINVAL);
tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
memcpy(tmp, val, vallen);
- if (KEY_IS(KEY_MDS_CONN)) {
- struct osc_creator *oscc = &obd->u.cli.cl_oscc;
-
- oscc->oscc_oa.o_seq = (*(__u32 *)val);
- oscc->oscc_oa.o_valid |= OBD_MD_FLGROUP;
- LASSERT_SEQ_IS_MDT(oscc->oscc_oa.o_seq);
- req->rq_no_delay = req->rq_no_resend = 1;
- req->rq_interpret_reply = osc_setinfo_mds_conn_interpret;
- } else if (KEY_IS(KEY_GRANT_SHRINK)) {
+ if (KEY_IS(KEY_GRANT_SHRINK)) {
struct osc_grant_args *aa;
struct obdo *oa;
switch (event) {
case IMP_EVENT_DISCON: {
- /* Only do this on the MDS OSC's */
- if (imp->imp_server_timeout) {
- struct osc_creator *oscc = &obd->u.cli.cl_oscc;
-
- cfs_spin_lock(&oscc->oscc_lock);
- oscc->oscc_flags |= OSCC_FLAG_RECOVERING;
- cfs_spin_unlock(&oscc->oscc_lock);
- }
cli = &obd->u.cli;
client_obd_list_lock(&cli->cl_loi_list_lock);
cli->cl_avail_grant = 0;
break;
}
case IMP_EVENT_ACTIVE: {
- /* Only do this on the MDS OSC's */
- if (imp->imp_server_timeout) {
- struct osc_creator *oscc = &obd->u.cli.cl_oscc;
-
- cfs_spin_lock(&oscc->oscc_lock);
- oscc->oscc_flags &= ~(OSCC_FLAG_NOSPC |
- OSCC_FLAG_NOSPC_BLK);
- cfs_spin_unlock(&oscc->oscc_lock);
- }
rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
break;
}
ptlrpc_lprocfs_register_obd(obd);
}
- oscc_init(obd);
/* We need to allocate a few requests more, because
* brw_interpret tries to create new requests before freeing
* previous ones, Ideally we want to have 2x max_rpcs_in_flight
.o_statfs_async = osc_statfs_async,
.o_packmd = osc_packmd,
.o_unpackmd = osc_unpackmd,
- .o_precreate = osc_precreate,
.o_create = osc_create,
- .o_create_async = osc_create_async,
.o_destroy = osc_destroy,
.o_getattr = osc_getattr,
.o_getattr_async = osc_getattr_async,
if (rc)
goto out;
+ /* Add a bit of hysteresis so this flag isn't continually flapping,
+ * and ensure that new files don't get extremely fragmented due to
+ * only a small amount of available space in the filesystem.
+ * We want to set the NOSPC flag when there is less than ~0.1% free
+ * and clear it when there is at least ~0.2% free space, so:
+ * avail < ~0.1% max max = avail + used
+ * 1025 * avail < avail + used used = blocks - free
+ * 1024 * avail < used
+ * 1024 * avail < blocks - free
+ * avail < ((blocks - free) >> 10)
+ *
+ * On very large disk, say 16TB 0.1% will be 16 GB. We don't want to
+ * lose that amount of space so in those cases we report no space left
+ * if their is less than 1 GB left. */
if (likely(msfs->os_type)) {
used = min_t(__u64, (msfs->os_blocks - msfs->os_bfree) >> 10,
1 << 30);
EXPORT_SYMBOL(ptlrpc_prep_req);
/**
- * Allocate "fake" request that would not be sent anywhere in the end.
- * Only used as a hack because we have no other way of performing
- * async actions in lustre between layers.
- * Used on MDS to request object preallocations from more than one OST at a
- * time.
- */
-struct ptlrpc_request *ptlrpc_prep_fakereq(struct obd_import *imp,
- unsigned int timeout,
- ptlrpc_interpterer_t interpreter)
-{
- struct ptlrpc_request *request = NULL;
- ENTRY;
-
- OBD_ALLOC(request, sizeof(*request));
- if (!request) {
- CERROR("request allocation out of memory\n");
- RETURN(NULL);
- }
-
- request->rq_send_state = LUSTRE_IMP_FULL;
- request->rq_type = PTL_RPC_MSG_REQUEST;
- request->rq_import = class_import_get(imp);
- request->rq_export = NULL;
- request->rq_import_generation = imp->imp_generation;
-
- request->rq_timeout = timeout;
- request->rq_sent = cfs_time_current_sec();
- request->rq_deadline = request->rq_sent + timeout;
- request->rq_reply_deadline = request->rq_deadline;
- request->rq_interpret_reply = interpreter;
- request->rq_phase = RQ_PHASE_RPC;
- request->rq_next_phase = RQ_PHASE_INTERPRET;
- /* don't want reply */
- request->rq_receiving_reply = 0;
- request->rq_must_unlink = 0;
- request->rq_no_delay = request->rq_no_resend = 1;
- request->rq_fake = 1;
-
- cfs_spin_lock_init(&request->rq_lock);
- CFS_INIT_LIST_HEAD(&request->rq_list);
- CFS_INIT_LIST_HEAD(&request->rq_replay_list);
- CFS_INIT_LIST_HEAD(&request->rq_set_chain);
- CFS_INIT_LIST_HEAD(&request->rq_history_list);
- CFS_INIT_LIST_HEAD(&request->rq_exp_list);
- cfs_waitq_init(&request->rq_reply_waitq);
- cfs_waitq_init(&request->rq_set_waitq);
-
- request->rq_xid = ptlrpc_next_xid();
- cfs_atomic_set(&request->rq_refcount, 1);
-
- RETURN(request);
-}
-EXPORT_SYMBOL(ptlrpc_prep_fakereq);
-
-/**
- * Indicate that processing of "fake" request is finished.
- */
-void ptlrpc_fakereq_finished(struct ptlrpc_request *req)
-{
- struct ptlrpc_request_set *set = req->rq_set;
- int wakeup = 0;
-
- /* hold ref on the request to prevent others (ptlrpcd) to free it */
- ptlrpc_request_addref(req);
- cfs_list_del_init(&req->rq_list);
-
- /* if we kill request before timeout - need adjust counter */
- if (req->rq_phase == RQ_PHASE_RPC && set != NULL &&
- cfs_atomic_dec_and_test(&set->set_remaining))
- wakeup = 1;
-
- ptlrpc_rqphase_move(req, RQ_PHASE_COMPLETE);
-
- /* Only need to call wakeup once when to be empty. */
- if (wakeup)
- cfs_waitq_signal(&set->set_waitq);
- ptlrpc_req_finished(req);
-}
-EXPORT_SYMBOL(ptlrpc_fakereq_finished);
-
-/**
* Allocate and initialize new request set structure.
* Returns a pointer to the newly allocated set structure or NULL on error.
*/
__u32 opc;
int err;
- /* Fake requests include no rq_reqmsg */
- if (req->rq_fake)
- return 0;
-
LASSERT(req->rq_reqmsg != NULL);
opc = lustre_msg_get_opc(req->rq_reqmsg);
req->rq_timedout = 1;
cfs_spin_unlock(&req->rq_lock);
- DEBUG_REQ(req->rq_fake ? D_INFO : D_WARNING, req, "Request "
- " sent has %s: [sent "CFS_DURATION_T"/"
- "real "CFS_DURATION_T"]",
+ DEBUG_REQ(D_WARNING, req, "Request sent has %s: [sent "CFS_DURATION_T
+ "/real "CFS_DURATION_T"]",
req->rq_net_err ? "failed due to network error" :
((req->rq_real_sent == 0 ||
cfs_time_before(req->rq_real_sent, req->rq_sent) ||
RETURN(1);
}
- if (req->rq_fake)
- RETURN(1);
-
cfs_atomic_inc(&imp->imp_timeouts);
/* The DLM server doesn't want recovery run on its imports. */
git://git.whamcloud.com / fs / lustre-release.git / commitdiff