/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2002-2006 Cluster File Systems, Inc. * Author: Phil Schwan * Peter Braam * Mike Shaver * Nathan Rutman * * This file is part of the Lustre file system, http://www.lustre.org * Lustre is a trademark of Cluster File Systems, Inc. * * You may have signed or agreed to another license before downloading * this software. If so, you are bound by the terms and conditions * of that agreement, and the following does not apply to you. See the * LICENSE file included with this distribution for more information. * * If you did not agree to a different license, then this copy of Lustre * is open source software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * In either case, Lustre 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 * license text for more details. */ #ifndef EXPORT_SYMTAB # define EXPORT_SYMTAB #endif #define DEBUG_SUBSYSTEM S_LOV #ifdef __KERNEL__ #include #else #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include "lov_internal.h" /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion. Any function that expects lov_tgts to remain stationary must take a ref. */ void lov_getref(struct obd_device *obd) { struct lov_obd *lov = &obd->u.lov; /* nobody gets through here until lov_putref is done */ mutex_down(&lov->lov_lock); atomic_inc(&lov->lov_refcount); mutex_up(&lov->lov_lock); return; } static void __lov_del_obd(struct obd_device *obd, __u32 index); void lov_putref(struct obd_device *obd) { struct lov_obd *lov = &obd->u.lov; mutex_down(&lov->lov_lock); /* ok to dec to 0 more than once -- ltd_exp's will be null */ if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) { int i; CDEBUG(D_CONFIG, "destroying %d lov targets\n", lov->lov_death_row); for (i = 0; i < lov->desc.ld_tgt_count; i++) { if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_reap) continue; /* Disconnect and delete from list */ __lov_del_obd(obd, i); lov->lov_death_row--; } } mutex_up(&lov->lov_lock); } #define MAX_STRING_SIZE 128 static int lov_connect_obd(struct obd_device *obd, __u32 index, int activate, struct obd_connect_data *data) { struct lov_obd *lov = &obd->u.lov; struct obd_uuid tgt_uuid = lov->lov_tgts[index]->ltd_uuid; struct obd_device *tgt_obd; struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" }; struct lustre_handle conn = {0, }; struct obd_import *imp; #ifdef __KERNEL__ cfs_proc_dir_entry_t *lov_proc_dir; #endif int rc; ENTRY; if (!lov->lov_tgts[index]) RETURN(-EINVAL); tgt_obd = class_find_client_obd(&tgt_uuid, LUSTRE_OSC_NAME, &obd->obd_uuid); if (!tgt_obd) { CERROR("Target %s not attached\n", obd_uuid2str(&tgt_uuid)); RETURN(-EINVAL); } if (!tgt_obd->obd_set_up) { CERROR("Target %s not set up\n", obd_uuid2str(&tgt_uuid)); RETURN(-EINVAL); } if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX)) data->ocd_index = index; /* * Divine LOV knows that OBDs under it are OSCs. */ imp = tgt_obd->u.cli.cl_import; if (activate) { tgt_obd->obd_no_recov = 0; /* FIXME this is probably supposed to be ptlrpc_set_import_active. Horrible naming. */ ptlrpc_activate_import(imp); } if (imp->imp_invalid) { CERROR("not connecting OSC %s; administratively " "disabled\n", obd_uuid2str(&tgt_uuid)); rc = obd_register_observer(tgt_obd, obd); if (rc) { CERROR("Target %s register_observer error %d; " "will not be able to reactivate\n", obd_uuid2str(&tgt_uuid), rc); } RETURN(0); } rc = obd_connect(NULL, &conn, tgt_obd, &lov_osc_uuid, data); if (rc) { CERROR("Target %s connect error %d\n", obd_uuid2str(&tgt_uuid), rc); RETURN(rc); } lov->lov_tgts[index]->ltd_exp = class_conn2export(&conn); if (!lov->lov_tgts[index]->ltd_exp) { CERROR("Target %s: null export!\n", obd_uuid2str(&tgt_uuid)); RETURN(-ENODEV); } rc = obd_register_observer(tgt_obd, obd); if (rc) { CERROR("Target %s register_observer error %d\n", obd_uuid2str(&tgt_uuid), rc); obd_disconnect(lov->lov_tgts[index]->ltd_exp); lov->lov_tgts[index]->ltd_exp = NULL; RETURN(rc); } lov->lov_tgts[index]->ltd_reap = 0; if (activate) { lov->lov_tgts[index]->ltd_active = 1; lov->desc.ld_active_tgt_count++; } CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index, obd_uuid2str(&tgt_uuid), tgt_obd->obd_name, activate ? "":"in"); #ifdef __KERNEL__ lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds"); if (lov_proc_dir) { struct obd_device *osc_obd = class_conn2obd(&conn); cfs_proc_dir_entry_t *osc_symlink; char name[MAX_STRING_SIZE]; LASSERT(osc_obd != NULL); LASSERT(osc_obd->obd_magic == OBD_DEVICE_MAGIC); LASSERT(osc_obd->obd_type->typ_name != NULL); snprintf(name, MAX_STRING_SIZE, "../../../%s/%s", osc_obd->obd_type->typ_name, osc_obd->obd_name); osc_symlink = proc_symlink(osc_obd->obd_name, lov_proc_dir, name); if (osc_symlink == NULL) { CERROR("could not register LOV target " "/proc/fs/lustre/%s/%s/target_obds/%s.", obd->obd_type->typ_name, obd->obd_name, osc_obd->obd_name); lprocfs_remove(&lov_proc_dir); } } #endif rc = qos_add_tgt(obd, index); if (rc) CERROR("qos_add_tgt failed %d\n", rc); RETURN(0); } static int lov_connect(const struct lu_env *env, struct lustre_handle *conn, struct obd_device *obd, struct obd_uuid *cluuid, struct obd_connect_data *data) { struct lov_obd *lov = &obd->u.lov; struct lov_tgt_desc *tgt; int i, rc; ENTRY; CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects); rc = class_connect(conn, obd, cluuid); if (rc) RETURN(rc); /* Why should there ever be more than 1 connect? */ lov->lov_connects++; LASSERT(lov->lov_connects == 1); memset(&lov->lov_ocd, 0, sizeof(lov->lov_ocd)); if (data) lov->lov_ocd = *data; lov_getref(obd); for (i = 0; i < lov->desc.ld_tgt_count; i++) { tgt = lov->lov_tgts[i]; if (!tgt || obd_uuid_empty(&tgt->ltd_uuid)) continue; /* Flags will be lowest common denominator */ rc = lov_connect_obd(obd, i, tgt->ltd_activate, &lov->lov_ocd); if (rc) { CERROR("%s: lov connect tgt %d failed: %d\n", obd->obd_name, i, rc); continue; } } lov_putref(obd); RETURN(0); } static int lov_disconnect_obd(struct obd_device *obd, __u32 index) { cfs_proc_dir_entry_t *lov_proc_dir; struct lov_obd *lov = &obd->u.lov; struct obd_device *osc_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp); int rc; ENTRY; CDEBUG(D_CONFIG, "%s: disconnecting target %s\n", obd->obd_name, osc_obd->obd_name); if (lov->lov_tgts[index]->ltd_active) { lov->lov_tgts[index]->ltd_active = 0; lov->desc.ld_active_tgt_count--; } lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds"); if (lov_proc_dir) { cfs_proc_dir_entry_t *osc_symlink; osc_symlink = lprocfs_srch(lov_proc_dir, osc_obd->obd_name); if (osc_symlink) { lprocfs_remove(&osc_symlink); } else { CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing.", obd->obd_type->typ_name, obd->obd_name, osc_obd->obd_name); } } if (osc_obd) { /* Pass it on to our clients. * XXX This should be an argument to disconnect, * XXX not a back-door flag on the OBD. Ah well. */ osc_obd->obd_force = obd->obd_force; osc_obd->obd_fail = obd->obd_fail; osc_obd->obd_no_recov = obd->obd_no_recov; } obd_register_observer(osc_obd, NULL); rc = obd_disconnect(lov->lov_tgts[index]->ltd_exp); if (rc) { CERROR("Target %s disconnect error %d\n", lov_uuid2str(lov, index), rc); rc = 0; } qos_del_tgt(obd, index); lov->lov_tgts[index]->ltd_exp = NULL; RETURN(0); } static int lov_del_target(struct obd_device *obd, __u32 index, struct obd_uuid *uuidp, int gen); static int lov_disconnect(struct obd_export *exp) { struct obd_device *obd = class_exp2obd(exp); struct lov_obd *lov = &obd->u.lov; int i, rc; ENTRY; if (!lov->lov_tgts) goto out; /* Only disconnect the underlying layers on the final disconnect. */ lov->lov_connects--; if (lov->lov_connects != 0) { /* why should there be more than 1 connect? */ CERROR("disconnect #%d\n", lov->lov_connects); goto out; } /* Let's hold another reference so lov_del_obd doesn't spin through putref every time */ lov_getref(obd); for (i = 0; i < lov->desc.ld_tgt_count; i++) { if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) { /* Disconnection is the last we know about an obd */ lov_del_target(obd, i, 0, lov->lov_tgts[i]->ltd_gen); } } lov_putref(obd); out: rc = class_disconnect(exp); /* bz 9811 */ RETURN(rc); } /* Error codes: * * -EINVAL : UUID can't be found in the LOV's target list * -ENOTCONN: The UUID is found, but the target connection is bad (!) * -EBADF : The UUID is found, but the OBD is the wrong type (!) */ static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid, int activate) { struct lov_obd *lov = &obd->u.lov; struct lov_tgt_desc *tgt; int i, rc = 0; ENTRY; CDEBUG(D_INFO, "Searching in lov %p for uuid %s (activate=%d)\n", lov, uuid->uuid, activate); lov_getref(obd); for (i = 0; i < lov->desc.ld_tgt_count; i++) { tgt = lov->lov_tgts[i]; if (!tgt || !tgt->ltd_exp) continue; CDEBUG(D_INFO, "lov idx %d is %s conn "LPX64"\n", i, obd_uuid2str(&tgt->ltd_uuid), tgt->ltd_exp->exp_handle.h_cookie); if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) break; } if (i == lov->desc.ld_tgt_count) GOTO(out, rc = -EINVAL); if (lov->lov_tgts[i]->ltd_active == activate) { CDEBUG(D_INFO, "OSC %s already %sactive!\n", uuid->uuid, activate ? "" : "in"); GOTO(out, rc); } CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n", obd_uuid2str(uuid), activate ? "" : "in"); lov->lov_tgts[i]->ltd_active = activate; if (activate) lov->desc.ld_active_tgt_count++; else lov->desc.ld_active_tgt_count--; /* remove any old qos penalty */ lov->lov_tgts[i]->ltd_qos.ltq_penalty = 0; out: lov_putref(obd); RETURN(rc); } static int lov_notify(struct obd_device *obd, struct obd_device *watched, enum obd_notify_event ev, void *data) { int rc = 0; ENTRY; if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) { struct obd_uuid *uuid; LASSERT(watched); if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) { CERROR("unexpected notification of %s %s!\n", watched->obd_type->typ_name, watched->obd_name); RETURN(-EINVAL); } uuid = &watched->u.cli.cl_target_uuid; /* Set OSC as active before notifying the observer, so the * observer can use the OSC normally. */ rc = lov_set_osc_active(obd, uuid, ev == OBD_NOTIFY_ACTIVE); if (rc) { CERROR("%sactivation of %s failed: %d\n", (ev == OBD_NOTIFY_ACTIVE) ? "" : "de", obd_uuid2str(uuid), rc); RETURN(rc); } } /* Pass the notification up the chain. */ if (watched) { rc = obd_notify_observer(obd, watched, ev, data); } else { /* NULL watched means all osc's in the lov (only for syncs) */ struct lov_obd *lov = &obd->u.lov; struct obd_device *tgt_obd; int i; lov_getref(obd); for (i = 0; i < lov->desc.ld_tgt_count; i++) { if (!lov->lov_tgts[i]) continue; tgt_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp); rc = obd_notify_observer(obd, tgt_obd, ev, data); if (rc) { CERROR("%s: notify %s of %s failed %d\n", obd->obd_name, obd->obd_observer->obd_name, tgt_obd->obd_name, rc); break; } } lov_putref(obd); } RETURN(rc); } static int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp, __u32 index, int gen, int active) { struct lov_obd *lov = &obd->u.lov; struct lov_tgt_desc *tgt; int rc; ENTRY; CDEBUG(D_CONFIG, "uuid:%s idx:%d gen:%d active:%d\n", uuidp->uuid, index, gen, active); if (gen <= 0) { CERROR("request to add OBD %s with invalid generation: %d\n", uuidp->uuid, gen); RETURN(-EINVAL); } mutex_down(&lov->lov_lock); if ((index < lov->lov_tgt_size) && (lov->lov_tgts[index] != NULL)) { tgt = lov->lov_tgts[index]; CERROR("UUID %s already assigned at LOV target index %d\n", obd_uuid2str(&tgt->ltd_uuid), index); mutex_up(&lov->lov_lock); RETURN(-EEXIST); } if (index >= lov->lov_tgt_size) { /* We need to reallocate the lov target array. */ struct lov_tgt_desc **newtgts, **old = NULL; __u32 newsize, oldsize = 0; newsize = max(lov->lov_tgt_size, (__u32)2); while (newsize < index + 1) newsize = newsize << 1; OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize); if (newtgts == NULL) { mutex_up(&lov->lov_lock); RETURN(-ENOMEM); } if (lov->lov_tgt_size) { memcpy(newtgts, lov->lov_tgts, sizeof(*newtgts) * lov->lov_tgt_size); old = lov->lov_tgts; oldsize = lov->lov_tgt_size; } lov->lov_tgts = newtgts; lov->lov_tgt_size = newsize; #ifdef __KERNEL__ smp_rmb(); #endif if (old) OBD_FREE(old, sizeof(*old) * oldsize); CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lov->lov_tgts, lov->lov_tgt_size); } OBD_ALLOC_PTR(tgt); if (!tgt) { mutex_up(&lov->lov_lock); RETURN(-ENOMEM); } memset(tgt, 0, sizeof(*tgt)); tgt->ltd_uuid = *uuidp; /* XXX - add a sanity check on the generation number. */ tgt->ltd_gen = gen; tgt->ltd_index = index; tgt->ltd_activate = active; lov->lov_tgts[index] = tgt; if (index >= lov->desc.ld_tgt_count) lov->desc.ld_tgt_count = index + 1; mutex_up(&lov->lov_lock); CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n", index, tgt->ltd_gen, lov->desc.ld_tgt_count); if (lov->lov_connects == 0) { /* lov_connect hasn't been called yet. We'll do the lov_connect_obd on this target when that fn first runs, because we don't know the connect flags yet. */ RETURN(0); } lov_getref(obd); rc = lov_connect_obd(obd, index, active, &lov->lov_ocd); if (rc) GOTO(out, rc); rc = lov_notify(obd, tgt->ltd_exp->exp_obd, active ? OBD_NOTIFY_ACTIVE : OBD_NOTIFY_INACTIVE, (void *)&index); out: if (rc) { CERROR("add failed (%d), deleting %s\n", rc, obd_uuid2str(&tgt->ltd_uuid)); lov_del_target(obd, index, 0, 0); } lov_putref(obd); RETURN(rc); } /* Schedule a target for deletion */ static int lov_del_target(struct obd_device *obd, __u32 index, struct obd_uuid *uuidp, int gen) { struct lov_obd *lov = &obd->u.lov; int count = lov->desc.ld_tgt_count; int rc = 0; ENTRY; if (index >= count) { CERROR("LOV target index %d >= number of LOV OBDs %d.\n", index, count); RETURN(-EINVAL); } lov_getref(obd); if (!lov->lov_tgts[index]) { CERROR("LOV target at index %d is not setup.\n", index); GOTO(out, rc = -EINVAL); } if (uuidp && !obd_uuid_equals(uuidp, &lov->lov_tgts[index]->ltd_uuid)) { CERROR("LOV target UUID %s at index %d doesn't match %s.\n", lov_uuid2str(lov, index), index, obd_uuid2str(uuidp)); GOTO(out, rc = -EINVAL); } CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n", lov_uuid2str(lov, index), index, lov->lov_tgts[index]->ltd_gen, lov->lov_tgts[index]->ltd_exp, lov->lov_tgts[index]->ltd_active); lov->lov_tgts[index]->ltd_reap = 1; lov->lov_death_row++; /* we really delete it from lov_putref */ out: lov_putref(obd); RETURN(rc); } /* We are holding lov_lock */ static void __lov_del_obd(struct obd_device *obd, __u32 index) { struct lov_obd *lov = &obd->u.lov; struct obd_device *osc_obd; struct lov_tgt_desc *tgt = lov->lov_tgts[index]; LASSERT(tgt); LASSERT(tgt->ltd_reap); osc_obd = class_exp2obd(tgt->ltd_exp); CDEBUG(D_CONFIG, "Removing tgt %s : %s\n", lov_uuid2str(lov, index), osc_obd ? osc_obd->obd_name : ""); if (tgt->ltd_exp) lov_disconnect_obd(obd, index); /* XXX - right now there is a dependency on ld_tgt_count being the * maximum tgt index for computing the mds_max_easize. So we can't * shrink it. */ lov->lov_tgts[index] = NULL; OBD_FREE_PTR(tgt); /* Manual cleanup - no cleanup logs to clean up the osc's. We must do it ourselves. And we can't do it from lov_cleanup, because we just lost our only reference to it. */ if (osc_obd) class_manual_cleanup(osc_obd); } void lov_fix_desc(struct lov_desc *desc) { if (desc->ld_default_stripe_size < PTLRPC_MAX_BRW_SIZE) { LCONSOLE_WARN("Increasing default stripe size to min %u\n", PTLRPC_MAX_BRW_SIZE); desc->ld_default_stripe_size = PTLRPC_MAX_BRW_SIZE; } else if (desc->ld_default_stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) { desc->ld_default_stripe_size &= ~(LOV_MIN_STRIPE_SIZE - 1); LCONSOLE_WARN("Changing default stripe size to "LPU64" (a " "multiple of %u)\n", desc->ld_default_stripe_size,LOV_MIN_STRIPE_SIZE); } if (desc->ld_default_stripe_count == 0) desc->ld_default_stripe_count = 1; /* from lov_setstripe */ if ((desc->ld_pattern != 0) && (desc->ld_pattern != LOV_PATTERN_RAID0)) { LCONSOLE_WARN("Unknown stripe pattern: %#x\n",desc->ld_pattern); desc->ld_pattern = 0; } if (desc->ld_qos_maxage == 0) desc->ld_qos_maxage = QOS_DEFAULT_MAXAGE; } static int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg) { struct lprocfs_static_vars lvars; struct lov_desc *desc; struct lov_obd *lov = &obd->u.lov; int count; ENTRY; if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { CERROR("LOV setup requires a descriptor\n"); RETURN(-EINVAL); } desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1); if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) { CERROR("descriptor size wrong: %d > %d\n", (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1)); RETURN(-EINVAL); } if (desc->ld_magic != LOV_DESC_MAGIC) { if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) { CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n", obd->obd_name, desc); lustre_swab_lov_desc(desc); } else { CERROR("%s: Bad lov desc magic: %#x\n", obd->obd_name, desc->ld_magic); RETURN(-EINVAL); } } lov_fix_desc(desc); /* Because of 64-bit divide/mod operations only work with a 32-bit * divisor in a 32-bit kernel, we cannot support a stripe width * of 4GB or larger on 32-bit CPUs. */ count = desc->ld_default_stripe_count; if ((count > 0 ? count : desc->ld_tgt_count) * desc->ld_default_stripe_size > 0xffffffff) { CERROR("LOV: stripe width "LPU64"x%u > 4294967295 bytes\n", desc->ld_default_stripe_size, count); RETURN(-EINVAL); } desc->ld_active_tgt_count = 0; lov->desc = *desc; lov->lov_tgt_size = 0; sema_init(&lov->lov_lock, 1); atomic_set(&lov->lov_refcount, 0); INIT_LIST_HEAD(&lov->lov_qos.lq_oss_list); init_rwsem(&lov->lov_qos.lq_rw_sem); lov->lov_qos.lq_dirty = 1; lov->lov_qos.lq_dirty_rr = 1; lov->lov_qos.lq_reset = 1; /* Default priority is toward free space balance */ lov->lov_qos.lq_prio_free = 232; lprocfs_init_vars(lov, &lvars); lprocfs_obd_setup(obd, lvars.obd_vars); #ifdef LPROCFS { cfs_proc_dir_entry_t *entry; entry = create_proc_entry("target_obd", 0444, obd->obd_proc_entry); if (entry != NULL) { entry->proc_fops = &lov_proc_target_fops; entry->data = obd; } } #endif RETURN(0); } static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) { int rc = 0; ENTRY; switch (stage) { case OBD_CLEANUP_EARLY: { struct lov_obd *lov = &obd->u.lov; int i; for (i = 0; i < lov->desc.ld_tgt_count; i++) { if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) continue; obd_precleanup(class_exp2obd(lov->lov_tgts[i]->ltd_exp), OBD_CLEANUP_EARLY); } break; } case OBD_CLEANUP_EXPORTS: break; case OBD_CLEANUP_SELF_EXP: rc = obd_llog_finish(obd, 0); if (rc != 0) CERROR("failed to cleanup llogging subsystems\n"); break; case OBD_CLEANUP_OBD: break; } RETURN(rc); } static int lov_cleanup(struct obd_device *obd) { struct lov_obd *lov = &obd->u.lov; lprocfs_obd_cleanup(obd); if (lov->lov_tgts) { int i; for (i = 0; i < lov->desc.ld_tgt_count; i++) { if (lov->lov_tgts[i]) { /* Inactive targets may never have connected */ if (lov->lov_tgts[i]->ltd_active || atomic_read(&lov->lov_refcount)) /* We should never get here - these should have been removed in the disconnect. */ CERROR("lov tgt %d not cleaned!" " deathrow=%d, lovrc=%d\n", i, lov->lov_death_row, atomic_read(&lov->lov_refcount)); lov_del_target(obd, i, 0, 0); } } OBD_FREE(lov->lov_tgts, sizeof(*lov->lov_tgts) * lov->lov_tgt_size); lov->lov_tgt_size = 0; } if (lov->lov_qos.lq_rr_size) OBD_FREE(lov->lov_qos.lq_rr_array, lov->lov_qos.lq_rr_size); RETURN(0); } static int lov_process_config(struct obd_device *obd, obd_count len, void *buf) { struct lustre_cfg *lcfg = buf; struct obd_uuid obd_uuid; int cmd; int rc = 0; ENTRY; switch(cmd = lcfg->lcfg_command) { case LCFG_LOV_ADD_OBD: case LCFG_LOV_ADD_INA: case LCFG_LOV_DEL_OBD: { __u32 index; int gen; /* lov_modify_tgts add 0:lov_mdsA 1:ost1_UUID 2:0 3:1 */ if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid)) GOTO(out, rc = -EINVAL); obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1)); if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1) GOTO(out, rc = -EINVAL); if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1) GOTO(out, rc = -EINVAL); if (cmd == LCFG_LOV_ADD_OBD) rc = lov_add_target(obd, &obd_uuid, index, gen, 1); else if (cmd == LCFG_LOV_ADD_INA) rc = lov_add_target(obd, &obd_uuid, index, gen, 0); else rc = lov_del_target(obd, index, &obd_uuid, gen); GOTO(out, rc); } case LCFG_PARAM: { struct lprocfs_static_vars lvars; struct lov_desc *desc = &(obd->u.lov.desc); if (!desc) GOTO(out, rc = -EINVAL); lprocfs_init_vars(lov, &lvars); rc = class_process_proc_param(PARAM_LOV, lvars.obd_vars, lcfg, obd); GOTO(out, rc); } default: { CERROR("Unknown command: %d\n", lcfg->lcfg_command); GOTO(out, rc = -EINVAL); } } out: RETURN(rc); } #ifndef log2 #define log2(n) 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 (src_oa->o_valid & OBD_MD_FLINLINE) { ost_uuid = (struct obd_uuid *)src_oa->o_inline; CDEBUG(D_HA, "clearing orphans only for %s\n", ost_uuid->uuid); } lov_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 == 0 && 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(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); if (ost_uuid) break; } lov_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 lov_stripe_md *obj_mdp, *lsm; struct lov_obd *lov = &exp->exp_obd->u.lov; unsigned ost_idx; int rc, i; ENTRY; LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS && src_oa->o_flags & OBD_FL_RECREATE_OBJS); OBD_ALLOC(obj_mdp, sizeof(*obj_mdp)); if (obj_mdp == NULL) RETURN(-ENOMEM); ost_idx = src_oa->o_nlink; lsm = *ea; if (lsm == NULL) GOTO(out, rc = -EINVAL); if (ost_idx >= lov->desc.ld_tgt_count || !lov->lov_tgts[ost_idx]) GOTO(out, rc = -EINVAL); for (i = 0; i < lsm->lsm_stripe_count; i++) { if (lsm->lsm_oinfo[i]->loi_ost_idx == ost_idx) { if (lsm->lsm_oinfo[i]->loi_id != src_oa->o_id) GOTO(out, rc = -EINVAL); break; } } if (i == lsm->lsm_stripe_count) GOTO(out, rc = -EINVAL); rc = obd_create(lov->lov_tgts[ost_idx]->ltd_exp, src_oa, &obj_mdp, oti); out: OBD_FREE(obj_mdp, sizeof(*obj_mdp)); RETURN(rc); } /* the LOV expects oa->o_id to be set to the LOV object id */ static int lov_create(struct obd_export *exp, struct obdo *src_oa, struct lov_stripe_md **ea, struct obd_trans_info *oti) { struct lov_obd *lov; struct obd_info oinfo; struct lov_request_set *set = NULL; struct lov_request *req; struct obd_statfs osfs; __u64 maxage; int rc = 0; ENTRY; LASSERT(ea != NULL); if (exp == NULL) RETURN(-EINVAL); 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); } lov = &exp->exp_obd->u.lov; if (!lov->desc.ld_active_tgt_count) RETURN(-EIO); /* Recreate a specific object id at the given OST index */ if ((src_oa->o_valid & OBD_MD_FLFLAGS) && (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) { rc = lov_recreate(exp, src_oa, ea, oti); RETURN(rc); } maxage = cfs_time_shift_64(-lov->desc.ld_qos_maxage); obd_statfs_rqset(exp->exp_obd, &osfs, maxage); rc = lov_prep_create_set(exp, &oinfo, ea, src_oa, oti, &set); if (rc) RETURN(rc); list_for_each_entry(req, &set->set_list, rq_link) { /* XXX: LOV STACKING: use real "obj_mdp" sub-data */ rc = obd_create(lov->lov_tgts[req->rq_idx]->ltd_exp, req->rq_oi.oi_oa, &req->rq_oi.oi_md, oti); lov_update_create_set(set, req, rc); } rc = lov_fini_create_set(set, ea); RETURN(rc); } #define ASSERT_LSM_MAGIC(lsmp) \ do { \ LASSERT((lsmp) != NULL); \ LASSERTF(((lsmp)->lsm_magic == LOV_MAGIC || \ (lsmp)->lsm_magic == LOV_MAGIC_JOIN), "%p->lsm_magic=%x\n", \ (lsmp), (lsmp)->lsm_magic); \ } while (0) static int lov_destroy(struct obd_export *exp, struct obdo *oa, struct lov_stripe_md *lsm, struct obd_trans_info *oti, struct obd_export *md_exp) { struct lov_request_set *set; struct obd_info oinfo; struct lov_request *req; struct list_head *pos; struct lov_obd *lov; int rc = 0, err; ENTRY; ASSERT_LSM_MAGIC(lsm); if (!exp || !exp->exp_obd) RETURN(-ENODEV); if (oa->o_valid & OBD_MD_FLCOOKIE) { LASSERT(oti); LASSERT(oti->oti_logcookies); } lov = &exp->exp_obd->u.lov; rc = lov_prep_destroy_set(exp, &oinfo, oa, lsm, oti, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { int err; req = list_entry(pos, struct lov_request, rq_link); if (oa->o_valid & OBD_MD_FLCOOKIE) oti->oti_logcookies = set->set_cookies + req->rq_stripe; err = obd_destroy(lov->lov_tgts[req->rq_idx]->ltd_exp, req->rq_oi.oi_oa, NULL, oti, NULL); err = lov_update_common_set(set, req, err); if (err) { CERROR("error: destroying objid "LPX64" subobj " LPX64" on OST idx %d: rc = %d\n", oa->o_id, req->rq_oi.oi_oa->o_id, req->rq_idx, err); if (!rc) rc = err; } } if (rc == 0) { LASSERT(lsm_op_find(lsm->lsm_magic) != NULL); rc = lsm_op_find(lsm->lsm_magic)->lsm_destroy(lsm, oa, md_exp); } err = lov_fini_destroy_set(set); RETURN(rc ? rc : err); } static int lov_getattr(struct obd_export *exp, struct obd_info *oinfo) { struct lov_request_set *set; struct lov_request *req; struct list_head *pos; struct lov_obd *lov; int err = 0, rc = 0; ENTRY; LASSERT(oinfo); ASSERT_LSM_MAGIC(oinfo->oi_md); if (!exp || !exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; rc = lov_prep_getattr_set(exp, oinfo, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { req = list_entry(pos, struct lov_request, rq_link); CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx " "%u\n", oinfo->oi_oa->o_id, req->rq_stripe, req->rq_oi.oi_oa->o_id, req->rq_idx); rc = obd_getattr(lov->lov_tgts[req->rq_idx]->ltd_exp, &req->rq_oi); err = lov_update_common_set(set, req, rc); if (err) { CERROR("error: getattr objid "LPX64" subobj " LPX64" on OST idx %d: rc = %d\n", oinfo->oi_oa->o_id, req->rq_oi.oi_oa->o_id, req->rq_idx, err); break; } } rc = lov_fini_getattr_set(set); if (err) rc = err; RETURN(rc); } static int lov_getattr_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) { struct lov_request_set *lovset = (struct lov_request_set *)data; int err; ENTRY; /* don't do attribute merge if this aysnc op failed */ if (rc) lovset->set_completes = 0; err = lov_fini_getattr_set(lovset); RETURN(rc ? rc : err); } static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo, struct ptlrpc_request_set *rqset) { struct lov_request_set *lovset; struct lov_obd *lov; struct list_head *pos; struct lov_request *req; int rc = 0, err; ENTRY; LASSERT(oinfo); ASSERT_LSM_MAGIC(oinfo->oi_md); if (!exp || !exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; rc = lov_prep_getattr_set(exp, oinfo, &lovset); if (rc) RETURN(rc); CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n", oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count, oinfo->oi_md->lsm_stripe_size); list_for_each (pos, &lovset->set_list) { req = list_entry(pos, struct lov_request, rq_link); CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx " "%u\n", oinfo->oi_oa->o_id, req->rq_stripe, req->rq_oi.oi_oa->o_id, req->rq_idx); rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp, &req->rq_oi, rqset); if (rc) { CERROR("error: getattr objid "LPX64" subobj " LPX64" on OST idx %d: rc = %d\n", oinfo->oi_oa->o_id, req->rq_oi.oi_oa->o_id, req->rq_idx, rc); GOTO(out, rc); } } if (!list_empty(&rqset->set_requests)) { LASSERT(rc == 0); LASSERT (rqset->set_interpret == NULL); rqset->set_interpret = lov_getattr_interpret; rqset->set_arg = (void *)lovset; RETURN(rc); } out: if (rc) lovset->set_completes = 0; err = lov_fini_getattr_set(lovset); RETURN(rc ? rc : err); } static int lov_setattr(struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti) { struct lov_request_set *set; struct lov_obd *lov; struct list_head *pos; struct lov_request *req; int err = 0, rc = 0; ENTRY; LASSERT(oinfo); ASSERT_LSM_MAGIC(oinfo->oi_md); if (!exp || !exp->exp_obd) RETURN(-ENODEV); /* for now, we only expect the following updates here */ LASSERT(!(oinfo->oi_oa->o_valid & ~(OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLMODE | OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME | OBD_MD_FLFLAGS | OBD_MD_FLSIZE | OBD_MD_FLGROUP | OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLINLINE | OBD_MD_FLFID | OBD_MD_FLGENER))); lov = &exp->exp_obd->u.lov; rc = lov_prep_setattr_set(exp, oinfo, oti, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { req = list_entry(pos, struct lov_request, rq_link); rc = obd_setattr(lov->lov_tgts[req->rq_idx]->ltd_exp, &req->rq_oi, NULL); err = lov_update_setattr_set(set, req, rc); if (err) { CERROR("error: setattr objid "LPX64" subobj " LPX64" on OST idx %d: rc = %d\n", set->set_oi->oi_oa->o_id, req->rq_oi.oi_oa->o_id, req->rq_idx, err); if (!rc) rc = err; } } err = lov_fini_setattr_set(set); if (!rc) rc = err; RETURN(rc); } static int lov_setattr_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) { struct lov_request_set *lovset = (struct lov_request_set *)data; int err; ENTRY; if (rc) lovset->set_completes = 0; err = lov_fini_setattr_set(lovset); RETURN(rc ? rc : err); } /* If @oti is given, the request goes from MDS and responses from OSTs are not needed. Otherwise, a client is waiting for responses. */ static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti, struct ptlrpc_request_set *rqset) { struct lov_request_set *set; struct lov_request *req; struct list_head *pos; struct lov_obd *lov; int rc = 0; ENTRY; LASSERT(oinfo); ASSERT_LSM_MAGIC(oinfo->oi_md); if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) { LASSERT(oti); LASSERT(oti->oti_logcookies); } if (!exp || !exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; rc = lov_prep_setattr_set(exp, oinfo, oti, &set); if (rc) RETURN(rc); CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n", oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count, oinfo->oi_md->lsm_stripe_size); list_for_each (pos, &set->set_list) { req = list_entry(pos, struct lov_request, rq_link); if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE) oti->oti_logcookies = set->set_cookies + req->rq_stripe; CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx " "%u\n", oinfo->oi_oa->o_id, req->rq_stripe, req->rq_oi.oi_oa->o_id, req->rq_idx); rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp, &req->rq_oi, oti, rqset); if (rc) { CERROR("error: setattr objid "LPX64" subobj " LPX64" on OST idx %d: rc = %d\n", set->set_oi->oi_oa->o_id, req->rq_oi.oi_oa->o_id, req->rq_idx, rc); break; } } /* If we are not waiting for responses on async requests, return. */ if (rc || !rqset || list_empty(&rqset->set_requests)) { int err; if (rc) set->set_completes = 0; err = lov_fini_setattr_set(set); RETURN(rc ? rc : err); } LASSERT(rqset->set_interpret == NULL); rqset->set_interpret = lov_setattr_interpret; rqset->set_arg = (void *)set; RETURN(0); } static int lov_punch_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) { struct lov_request_set *lovset = (struct lov_request_set *)data; int err; ENTRY; if (rc) lovset->set_completes = 0; err = lov_fini_punch_set(lovset); RETURN(rc ? rc : err); } /* FIXME: maybe we'll just make one node the authoritative attribute node, then * we can send this 'punch' to just the authoritative node and the nodes * that the punch will affect. */ static int lov_punch(struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti, struct ptlrpc_request_set *rqset) { struct lov_request_set *set; struct lov_obd *lov; struct list_head *pos; struct lov_request *req; int rc = 0; ENTRY; LASSERT(oinfo); ASSERT_LSM_MAGIC(oinfo->oi_md); if (!exp || !exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; rc = lov_prep_punch_set(exp, oinfo, oti, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { req = list_entry(pos, struct lov_request, rq_link); rc = obd_punch(lov->lov_tgts[req->rq_idx]->ltd_exp, &req->rq_oi, NULL, rqset); if (rc) { CERROR("error: punch objid "LPX64" subobj "LPX64 " on OST idx %d: rc = %d\n", set->set_oi->oi_oa->o_id, req->rq_oi.oi_oa->o_id, req->rq_idx, rc); break; } } if (rc || list_empty(&rqset->set_requests)) { int err; err = lov_fini_punch_set(set); RETURN(rc ? rc : err); } LASSERT(rqset->set_interpret == NULL); rqset->set_interpret = lov_punch_interpret; rqset->set_arg = (void *)set; RETURN(0); } static int lov_sync(struct obd_export *exp, struct obdo *oa, struct lov_stripe_md *lsm, obd_off start, obd_off end, void *capa) { struct lov_request_set *set; struct obd_info oinfo; struct lov_obd *lov; struct list_head *pos; struct lov_request *req; int err = 0, rc = 0; ENTRY; ASSERT_LSM_MAGIC(lsm); if (!exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; rc = lov_prep_sync_set(exp, &oinfo, oa, lsm, start, end, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { req = list_entry(pos, struct lov_request, rq_link); rc = obd_sync(lov->lov_tgts[req->rq_idx]->ltd_exp, req->rq_oi.oi_oa, NULL, req->rq_oi.oi_policy.l_extent.start, req->rq_oi.oi_policy.l_extent.end, capa); err = lov_update_common_set(set, req, rc); if (err) { CERROR("error: fsync objid "LPX64" subobj "LPX64 " on OST idx %d: rc = %d\n", set->set_oi->oi_oa->o_id, req->rq_oi.oi_oa->o_id, req->rq_idx, rc); if (!rc) rc = err; } } err = lov_fini_sync_set(set); if (!rc) rc = err; RETURN(rc); } static int lov_brw_check(struct lov_obd *lov, struct obd_info *lov_oinfo, obd_count oa_bufs, struct brw_page *pga) { struct obd_info oinfo = { { { 0 } } }; int i, rc = 0; oinfo.oi_oa = lov_oinfo->oi_oa; /* The caller just wants to know if there's a chance that this * I/O can succeed */ for (i = 0; i < oa_bufs; i++) { int stripe = lov_stripe_number(lov_oinfo->oi_md, pga[i].off); int ost = lov_oinfo->oi_md->lsm_oinfo[stripe]->loi_ost_idx; obd_off start, end; if (!lov_stripe_intersects(lov_oinfo->oi_md, i, pga[i].off, pga[i].off + pga[i].count, &start, &end)) continue; if (!lov->lov_tgts[ost] || !lov->lov_tgts[ost]->ltd_active) { CDEBUG(D_HA, "lov idx %d inactive\n", ost); return -EIO; } rc = obd_brw(OBD_BRW_CHECK, lov->lov_tgts[ost]->ltd_exp, &oinfo, 1, &pga[i], NULL); if (rc) break; } return rc; } static int lov_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo, obd_count oa_bufs, struct brw_page *pga, struct obd_trans_info *oti) { struct lov_request_set *set; struct lov_request *req; struct list_head *pos; struct lov_obd *lov = &exp->exp_obd->u.lov; int err, rc = 0; ENTRY; ASSERT_LSM_MAGIC(oinfo->oi_md); if (cmd == OBD_BRW_CHECK) { rc = lov_brw_check(lov, oinfo, oa_bufs, pga); RETURN(rc); } rc = lov_prep_brw_set(exp, oinfo, oa_bufs, pga, oti, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { struct obd_export *sub_exp; struct brw_page *sub_pga; req = list_entry(pos, struct lov_request, rq_link); sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp; sub_pga = set->set_pga + req->rq_pgaidx; rc = obd_brw(cmd, sub_exp, &req->rq_oi, req->rq_oabufs, sub_pga, oti); if (rc) break; lov_update_common_set(set, req, rc); } err = lov_fini_brw_set(set); if (!rc) rc = err; RETURN(rc); } static int lov_brw_interpret(struct ptlrpc_request_set *reqset, void *data, int rc) { struct lov_request_set *lovset = (struct lov_request_set *)data; ENTRY; if (rc) { lovset->set_completes = 0; lov_fini_brw_set(lovset); } else { rc = lov_fini_brw_set(lovset); } RETURN(rc); } static int lov_brw_async(int cmd, struct obd_export *exp, struct obd_info *oinfo, obd_count oa_bufs, struct brw_page *pga, struct obd_trans_info *oti, struct ptlrpc_request_set *set) { struct lov_request_set *lovset; struct lov_request *req; struct list_head *pos; struct lov_obd *lov = &exp->exp_obd->u.lov; int rc = 0; ENTRY; LASSERT(oinfo); ASSERT_LSM_MAGIC(oinfo->oi_md); if (cmd == OBD_BRW_CHECK) { rc = lov_brw_check(lov, oinfo, oa_bufs, pga); RETURN(rc); } rc = lov_prep_brw_set(exp, oinfo, oa_bufs, pga, oti, &lovset); if (rc) RETURN(rc); list_for_each (pos, &lovset->set_list) { struct obd_export *sub_exp; struct brw_page *sub_pga; req = list_entry(pos, struct lov_request, rq_link); sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp; sub_pga = lovset->set_pga + req->rq_pgaidx; rc = obd_brw_async(cmd, sub_exp, &req->rq_oi, req->rq_oabufs, sub_pga, oti, set); if (rc) GOTO(out, rc); lov_update_common_set(lovset, req, rc); } LASSERT(rc == 0); LASSERT(set->set_interpret == NULL); set->set_interpret = (set_interpreter_func)lov_brw_interpret; set->set_arg = (void *)lovset; RETURN(rc); out: lov_fini_brw_set(lovset); RETURN(rc); } static int lov_ap_make_ready(void *data, int cmd) { struct lov_async_page *lap = LAP_FROM_COOKIE(data); return lap->lap_caller_ops->ap_make_ready(lap->lap_caller_data, cmd); } static int lov_ap_refresh_count(void *data, int cmd) { struct lov_async_page *lap = LAP_FROM_COOKIE(data); return lap->lap_caller_ops->ap_refresh_count(lap->lap_caller_data, cmd); } static void lov_ap_fill_obdo(void *data, int cmd, struct obdo *oa) { struct lov_async_page *lap = LAP_FROM_COOKIE(data); lap->lap_caller_ops->ap_fill_obdo(lap->lap_caller_data, cmd, oa); /* XXX woah, shouldn't we be altering more here? size? */ oa->o_id = lap->lap_loi_id; oa->o_gr = lap->lap_loi_gr; oa->o_valid |= OBD_MD_FLGROUP; oa->o_stripe_idx = lap->lap_stripe; } static void lov_ap_update_obdo(void *data, int cmd, struct obdo *oa, obd_valid valid) { struct lov_async_page *lap = LAP_FROM_COOKIE(data); lap->lap_caller_ops->ap_update_obdo(lap->lap_caller_data, cmd,oa,valid); } static int lov_ap_completion(void *data, int cmd, struct obdo *oa, int rc) { struct lov_async_page *lap = LAP_FROM_COOKIE(data); /* in a raid1 regime this would down a count of many ios * in flight, onl calling the caller_ops completion when all * the raid1 ios are complete */ rc = lap->lap_caller_ops->ap_completion(lap->lap_caller_data,cmd,oa,rc); return rc; } static struct obd_capa *lov_ap_lookup_capa(void *data, int cmd) { struct lov_async_page *lap = LAP_FROM_COOKIE(data); return lap->lap_caller_ops->ap_lookup_capa(lap->lap_caller_data, cmd); } static struct obd_async_page_ops lov_async_page_ops = { .ap_make_ready = lov_ap_make_ready, .ap_refresh_count = lov_ap_refresh_count, .ap_fill_obdo = lov_ap_fill_obdo, .ap_update_obdo = lov_ap_update_obdo, .ap_completion = lov_ap_completion, .ap_lookup_capa = lov_ap_lookup_capa, }; int lov_prep_async_page(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, cfs_page_t *page, obd_off offset, struct obd_async_page_ops *ops, void *data, void **res) { struct lov_obd *lov = &exp->exp_obd->u.lov; struct lov_async_page *lap; int rc = 0; ENTRY; if (!page) { int i = 0; /* Find an existing osc so we can get it's stupid sizeof(*oap). Only because of this layering limitation will a client mount with no osts fail */ while (!lov->lov_tgts || !lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) { i++; if (i >= lov->desc.ld_tgt_count) RETURN(-ENOMEDIUM); } rc = size_round(sizeof(*lap)) + obd_prep_async_page(lov->lov_tgts[i]->ltd_exp, NULL, NULL, NULL, 0, NULL, NULL, NULL); RETURN(rc); } ASSERT_LSM_MAGIC(lsm); LASSERT(loi == NULL); lap = *res; lap->lap_magic = LOV_AP_MAGIC; lap->lap_caller_ops = ops; lap->lap_caller_data = data; /* for now only raid 0 which passes through */ lap->lap_stripe = lov_stripe_number(lsm, offset); lov_stripe_offset(lsm, offset, lap->lap_stripe, &lap->lap_sub_offset); loi = lsm->lsm_oinfo[lap->lap_stripe]; /* so the callback doesn't need the lsm */ lap->lap_loi_id = loi->loi_id; lap->lap_loi_gr = lsm->lsm_object_gr; LASSERT(lsm->lsm_object_gr > 0); lap->lap_sub_cookie = (void *)lap + size_round(sizeof(*lap)); rc = obd_prep_async_page(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, lsm, loi, page, lap->lap_sub_offset, &lov_async_page_ops, lap, &lap->lap_sub_cookie); if (rc) RETURN(rc); CDEBUG(D_CACHE, "lap %p page %p cookie %p off "LPU64"\n", lap, page, lap->lap_sub_cookie, offset); RETURN(0); } static int lov_queue_async_io(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, void *cookie, int cmd, obd_off off, int count, obd_flag brw_flags, obd_flag async_flags) { struct lov_obd *lov = &exp->exp_obd->u.lov; struct lov_async_page *lap; int rc; LASSERT(loi == NULL); ASSERT_LSM_MAGIC(lsm); lap = LAP_FROM_COOKIE(cookie); loi = lsm->lsm_oinfo[lap->lap_stripe]; rc = obd_queue_async_io(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, lsm, loi, lap->lap_sub_cookie, cmd, off, count, brw_flags, async_flags); RETURN(rc); } static int lov_set_async_flags(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, void *cookie, obd_flag async_flags) { struct lov_obd *lov = &exp->exp_obd->u.lov; struct lov_async_page *lap; int rc; LASSERT(loi == NULL); ASSERT_LSM_MAGIC(lsm); lap = LAP_FROM_COOKIE(cookie); loi = lsm->lsm_oinfo[lap->lap_stripe]; rc = obd_set_async_flags(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, lsm, loi, lap->lap_sub_cookie, async_flags); RETURN(rc); } static int lov_queue_group_io(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, struct obd_io_group *oig, void *cookie, int cmd, obd_off off, int count, obd_flag brw_flags, obd_flag async_flags) { struct lov_obd *lov = &exp->exp_obd->u.lov; struct lov_async_page *lap; int rc; LASSERT(loi == NULL); ASSERT_LSM_MAGIC(lsm); lap = LAP_FROM_COOKIE(cookie); loi = lsm->lsm_oinfo[lap->lap_stripe]; rc = obd_queue_group_io(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, lsm, loi, oig, lap->lap_sub_cookie, cmd, off, count, brw_flags, async_flags); RETURN(rc); } /* this isn't exactly optimal. we may have queued sync io in oscs on * all stripes, but we don't record that fact at queue time. so we * trigger sync io on all stripes. */ static int lov_trigger_group_io(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, struct obd_io_group *oig) { struct lov_obd *lov = &exp->exp_obd->u.lov; int rc = 0, i, err; LASSERT(loi == NULL); ASSERT_LSM_MAGIC(lsm); for (i = 0; i < lsm->lsm_stripe_count; i++) { loi = lsm->lsm_oinfo[i]; if (!lov->lov_tgts[loi->loi_ost_idx] || !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) { CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx); continue; } err = obd_trigger_group_io(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, lsm, loi, oig); if (rc == 0 && err != 0) rc = err; }; RETURN(rc); } static int lov_teardown_async_page(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, void *cookie) { struct lov_obd *lov = &exp->exp_obd->u.lov; struct lov_async_page *lap; int rc; LASSERT(loi == NULL); ASSERT_LSM_MAGIC(lsm); lap = LAP_FROM_COOKIE(cookie); loi = lsm->lsm_oinfo[lap->lap_stripe]; rc = obd_teardown_async_page(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, lsm, loi, lap->lap_sub_cookie); if (rc) { CERROR("unable to teardown sub cookie %p: %d\n", lap->lap_sub_cookie, rc); RETURN(rc); } RETURN(rc); } static int lov_enqueue_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) { struct lov_request_set *lovset = (struct lov_request_set *)data; ENTRY; rc = lov_fini_enqueue_set(lovset, lovset->set_ei->ei_mode, rc, rqset); RETURN(rc); } static int lov_enqueue(struct obd_export *exp, struct obd_info *oinfo, struct ldlm_enqueue_info *einfo, struct ptlrpc_request_set *rqset) { ldlm_mode_t mode = einfo->ei_mode; struct lov_request_set *set; struct lov_request *req; struct list_head *pos; struct lov_obd *lov; ldlm_error_t rc; ENTRY; LASSERT(oinfo); ASSERT_LSM_MAGIC(oinfo->oi_md); LASSERT(mode == (mode & -mode)); /* we should never be asked to replay a lock this way. */ LASSERT((oinfo->oi_flags & LDLM_FL_REPLAY) == 0); if (!exp || !exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; rc = lov_prep_enqueue_set(exp, oinfo, einfo, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { req = list_entry(pos, struct lov_request, rq_link); rc = obd_enqueue(lov->lov_tgts[req->rq_idx]->ltd_exp, &req->rq_oi, einfo, rqset); if (rc != ELDLM_OK) GOTO(out, rc); } if (rqset && !list_empty(&rqset->set_requests)) { LASSERT(rc == 0); LASSERT(rqset->set_interpret == NULL); rqset->set_interpret = lov_enqueue_interpret; rqset->set_arg = (void *)set; RETURN(rc); } out: rc = lov_fini_enqueue_set(set, mode, rc, rqset); RETURN(rc); } static int lov_match(struct obd_export *exp, struct lov_stripe_md *lsm, __u32 type, ldlm_policy_data_t *policy, __u32 mode, int *flags, void *data, struct lustre_handle *lockh) { struct lov_request_set *set; struct obd_info oinfo; struct lov_request *req; struct list_head *pos; struct lov_obd *lov = &exp->exp_obd->u.lov; struct lustre_handle *lov_lockhp; int lov_flags, rc = 0; ENTRY; ASSERT_LSM_MAGIC(lsm); LASSERT((*flags & LDLM_FL_TEST_LOCK) || mode == (mode & -mode)); if (!exp || !exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; rc = lov_prep_match_set(exp, &oinfo, lsm, policy, mode, lockh, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { ldlm_policy_data_t sub_policy; req = list_entry(pos, struct lov_request, rq_link); lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe; LASSERT(lov_lockhp); lov_flags = *flags; sub_policy.l_extent = req->rq_oi.oi_policy.l_extent; rc = obd_match(lov->lov_tgts[req->rq_idx]->ltd_exp, req->rq_oi.oi_md, type, &sub_policy, mode, &lov_flags, data, lov_lockhp); rc = lov_update_match_set(set, req, rc); if (rc <= 0) break; } lov_fini_match_set(set, mode, *flags); RETURN(rc); } static int lov_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm, ldlm_iterator_t it, void *data) { struct lov_obd *lov; int rc = 0, i; ENTRY; ASSERT_LSM_MAGIC(lsm); if (!exp || !exp->exp_obd) RETURN(-ENODEV); LASSERT(lsm->lsm_object_gr > 0); lov = &exp->exp_obd->u.lov; for (i = 0; i < lsm->lsm_stripe_count; i++) { struct lov_stripe_md submd; struct lov_oinfo *loi = lsm->lsm_oinfo[i]; if (!lov->lov_tgts[loi->loi_ost_idx]) { CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx); continue; } submd.lsm_object_id = loi->loi_id; submd.lsm_object_gr = lsm->lsm_object_gr; submd.lsm_stripe_count = 0; rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, &submd, it, data); } RETURN(rc); } static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm, __u32 mode, struct lustre_handle *lockh) { struct lov_request_set *set; struct obd_info oinfo; struct lov_request *req; struct list_head *pos; struct lov_obd *lov = &exp->exp_obd->u.lov; struct lustre_handle *lov_lockhp; int err = 0, rc = 0; ENTRY; ASSERT_LSM_MAGIC(lsm); if (!exp || !exp->exp_obd) RETURN(-ENODEV); LASSERT(lsm->lsm_object_gr > 0); LASSERT(lockh); lov = &exp->exp_obd->u.lov; rc = lov_prep_cancel_set(exp, &oinfo, lsm, mode, lockh, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { req = list_entry(pos, struct lov_request, rq_link); lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe; rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp, req->rq_oi.oi_md, mode, lov_lockhp); rc = lov_update_common_set(set, req, rc); if (rc) { CERROR("error: cancel objid "LPX64" subobj " LPX64" on OST idx %d: rc = %d\n", lsm->lsm_object_id, req->rq_oi.oi_md->lsm_object_id, req->rq_idx, rc); err = rc; } } lov_fini_cancel_set(set); RETURN(err); } static int lov_cancel_unused(struct obd_export *exp, struct lov_stripe_md *lsm, int flags, void *opaque) { struct lov_obd *lov; int rc = 0, i; ENTRY; if (!exp || !exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; if (lsm == NULL) { for (i = 0; i < lov->desc.ld_tgt_count; i++) { int err; if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) continue; err = obd_cancel_unused(lov->lov_tgts[i]->ltd_exp, NULL, flags, opaque); if (!rc) rc = err; } RETURN(rc); } ASSERT_LSM_MAGIC(lsm); LASSERT(lsm->lsm_object_gr > 0); for (i = 0; i < lsm->lsm_stripe_count; i++) { struct lov_stripe_md submd; struct lov_oinfo *loi = lsm->lsm_oinfo[i]; int err; if (!lov->lov_tgts[loi->loi_ost_idx]) { CDEBUG(D_HA, "lov idx %d NULL\n", loi->loi_ost_idx); continue; } if (!lov->lov_tgts[loi->loi_ost_idx]->ltd_active) CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx); submd.lsm_object_id = loi->loi_id; submd.lsm_object_gr = lsm->lsm_object_gr; submd.lsm_stripe_count = 0; err = obd_cancel_unused(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, &submd, flags, opaque); if (err && lov->lov_tgts[loi->loi_ost_idx]->ltd_active) { CERROR("error: cancel unused objid "LPX64" subobj "LPX64 " on OST idx %d: rc = %d\n", lsm->lsm_object_id, loi->loi_id, loi->loi_ost_idx, err); if (!rc) rc = err; } } RETURN(rc); } static int lov_join_lru(struct obd_export *exp, struct lov_stripe_md *lsm, int join) { struct lov_obd *lov; int i, count = 0; ENTRY; ASSERT_LSM_MAGIC(lsm); if (!exp || !exp->exp_obd) RETURN(-ENODEV); lov = &exp->exp_obd->u.lov; for (i = 0; i < lsm->lsm_stripe_count; i++) { struct lov_stripe_md submd; struct lov_oinfo *loi = lsm->lsm_oinfo[i]; int rc = 0; if (!lov->lov_tgts[loi->loi_ost_idx]) { CDEBUG(D_HA, "lov idx %d NULL\n", loi->loi_ost_idx); continue; } if (!lov->lov_tgts[loi->loi_ost_idx]->ltd_active) CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx); submd.lsm_object_id = loi->loi_id; submd.lsm_object_gr = lsm->lsm_object_gr; submd.lsm_stripe_count = 0; rc = obd_join_lru(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp, &submd, join); if (rc < 0) { CERROR("join lru failed. objid: "LPX64" subobj: "LPX64 " ostidx: %d rc: %d\n", lsm->lsm_object_id, loi->loi_id, loi->loi_ost_idx, rc); return rc; } else { count += rc; } } RETURN(count); } static int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) { struct lov_request_set *lovset = (struct lov_request_set *)data; int err; ENTRY; if (rc) lovset->set_completes = 0; err = lov_fini_statfs_set(lovset); RETURN(rc ? rc : err); } static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo, __u64 max_age, struct ptlrpc_request_set *rqset) { struct lov_request_set *set; struct lov_request *req; struct list_head *pos; struct lov_obd *lov; int rc = 0; ENTRY; LASSERT(oinfo != NULL); LASSERT(oinfo->oi_osfs != NULL); lov = &obd->u.lov; rc = lov_prep_statfs_set(obd, oinfo, &set); if (rc) RETURN(rc); list_for_each (pos, &set->set_list) { struct obd_device *osc_obd; req = list_entry(pos, struct lov_request, rq_link); osc_obd = class_exp2obd(lov->lov_tgts[req->rq_idx]->ltd_exp); rc = obd_statfs_async(osc_obd, &req->rq_oi, max_age, rqset); if (rc) break; } if (rc || list_empty(&rqset->set_requests)) { int err; if (rc) set->set_completes = 0; err = lov_fini_statfs_set(set); RETURN(rc ? rc : err); } LASSERT(rqset->set_interpret == NULL); rqset->set_interpret = lov_statfs_interpret; rqset->set_arg = (void *)set; RETURN(0); } static int lov_statfs(struct obd_device *obd, struct obd_statfs *osfs, __u64 max_age) { struct lov_obd *lov = &obd->u.lov; struct obd_statfs lov_sfs; int set = 0; int rc = 0, err; int i; ENTRY; /* We only get block data from the OBD */ for (i = 0; i < lov->desc.ld_tgt_count; i++) { if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) { CDEBUG(D_HA, "lov idx %d inactive\n", i); continue; } err = obd_statfs(class_exp2obd(lov->lov_tgts[i]->ltd_exp), &lov_sfs, max_age); if (err) { if (lov->lov_tgts[i]->ltd_active && !rc) rc = err; continue; } lov_update_statfs(class_exp2obd(lov->lov_tgts[i]->ltd_exp), osfs, &lov_sfs, set); set++; } err = lov_fini_statfs(obd, osfs, set); qos_update(lov); RETURN(rc ? rc : err); } static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len, void *karg, void *uarg) { struct obd_device *obddev = class_exp2obd(exp); struct lov_obd *lov = &obddev->u.lov; int i, rc, count = lov->desc.ld_tgt_count; struct obd_uuid *uuidp; ENTRY; switch (cmd) { case OBD_IOC_LOV_GET_CONFIG: { struct obd_ioctl_data *data; struct lov_desc *desc; char *buf = NULL; __u32 *genp; len = 0; if (obd_ioctl_getdata(&buf, &len, (void *)uarg)) RETURN(-EINVAL); data = (struct obd_ioctl_data *)buf; if (sizeof(*desc) > data->ioc_inllen1) { obd_ioctl_freedata(buf, len); RETURN(-EINVAL); } if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) { obd_ioctl_freedata(buf, len); RETURN(-EINVAL); } if (sizeof(__u32) * count > data->ioc_inllen3) { obd_ioctl_freedata(buf, len); RETURN(-EINVAL); } desc = (struct lov_desc *)data->ioc_inlbuf1; memcpy(desc, &(lov->desc), sizeof(*desc)); uuidp = (struct obd_uuid *)data->ioc_inlbuf2; genp = (__u32 *)data->ioc_inlbuf3; /* the uuid will be empty for deleted OSTs */ for (i = 0; i < count; i++, uuidp++, genp++) { if (!lov->lov_tgts[i]) continue; *uuidp = lov->lov_tgts[i]->ltd_uuid; *genp = lov->lov_tgts[i]->ltd_gen; } rc = copy_to_user((void *)uarg, buf, len); if (rc) rc = -EFAULT; obd_ioctl_freedata(buf, len); break; } case LL_IOC_LOV_SETSTRIPE: rc = lov_setstripe(exp, karg, uarg); break; case LL_IOC_LOV_GETSTRIPE: rc = lov_getstripe(exp, karg, uarg); break; case LL_IOC_LOV_SETEA: rc = lov_setea(exp, karg, uarg); break; default: { int set = 0; if (count == 0) RETURN(-ENOTTY); rc = 0; for (i = 0; i < count; i++) { int err; /* OST was disconnected */ if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) continue; err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp, len, karg, uarg); if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) { RETURN(err); } else if (err) { if (lov->lov_tgts[i]->ltd_active) { CDEBUG(err == -ENOTTY ? D_IOCTL : D_WARNING, "iocontrol OSC %s on OST " "idx %d cmd %x: err = %d\n", lov_uuid2str(lov, i), i, cmd, err); if (!rc) rc = err; } } else { set = 1; } } if (!set && !rc) rc = -EIO; } } RETURN(rc); } static int lov_get_info(struct obd_export *exp, __u32 keylen, void *key, __u32 *vallen, void *val) { struct obd_device *obddev = class_exp2obd(exp); struct lov_obd *lov = &obddev->u.lov; int i, rc; ENTRY; if (!vallen || !val) RETURN(-EFAULT); lov_getref(obddev); if (KEY_IS("lock_to_stripe")) { struct { char name[16]; struct ldlm_lock *lock; struct lov_stripe_md *lsm; } *data = key; struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name; struct lov_oinfo *loi; __u32 *stripe = val; if (*vallen < sizeof(*stripe)) GOTO(out, rc = -EFAULT); *vallen = sizeof(*stripe); /* XXX This is another one of those bits that will need to * change if we ever actually support nested LOVs. It uses * the lock's export to find out which stripe it is. */ /* XXX - it's assumed all the locks for deleted OSTs have * been cancelled. Also, the export for deleted OSTs will * be NULL and won't match the lock's export. */ for (i = 0; i < data->lsm->lsm_stripe_count; i++) { loi = data->lsm->lsm_oinfo[i]; if (!lov->lov_tgts[loi->loi_ost_idx]) continue; if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp == data->lock->l_conn_export && loi->loi_id == res_id->name[0] && loi->loi_gr == res_id->name[2]) { *stripe = i; GOTO(out, rc = 0); } } LDLM_ERROR(data->lock, "lock on inode without such object"); dump_lsm(D_ERROR, data->lsm); GOTO(out, rc = -ENXIO); } else if (KEY_IS("last_id")) { obd_id *ids = val; int size = sizeof(obd_id); for (i = 0; i < lov->desc.ld_tgt_count; i++) { if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) continue; rc = obd_get_info(lov->lov_tgts[i]->ltd_exp, keylen, key, &size, ids + i); if (rc != 0) GOTO(out, rc); } GOTO(out, rc = 0); } else if (KEY_IS(KEY_LOVDESC)) { struct lov_desc *desc_ret = val; *desc_ret = lov->desc; GOTO(out, rc = 0); } rc = -EINVAL; out: lov_putref(obddev); RETURN(rc); } static int lov_set_info_async(struct obd_export *exp, obd_count keylen, void *key, obd_count vallen, void *val, struct ptlrpc_request_set *set) { struct obd_device *obddev = class_exp2obd(exp); struct lov_obd *lov = &obddev->u.lov; int i, rc = 0, err; int no_set = !set; int incr = 0, check_uuid = 0, do_inactive = 0; ENTRY; if (no_set) { set = ptlrpc_prep_set(); if (!set) RETURN(-ENOMEM); } if (KEY_IS(KEY_NEXT_ID)) { if (vallen != lov->desc.ld_tgt_count * sizeof(obd_id)) RETURN(-EINVAL); vallen = sizeof(obd_id); incr = sizeof(obd_id); do_inactive = 1; } else if (KEY_IS("checksum")) { do_inactive = 1; } else if (KEY_IS("unlinked")) { check_uuid = val ? 1 : 0; } else if (KEY_IS("evict_by_nid")) { /* use defaults: do_inactive = incr = 0; */ } lov_getref(obddev); for (i = 0; i < lov->desc.ld_tgt_count; i++, val = (char *)val + incr) { /* OST was disconnected */ if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) continue; /* OST is inactive and we don't want inactive OSCs */ if (!lov->lov_tgts[i]->ltd_active && !do_inactive) continue; if (KEY_IS(KEY_MDS_CONN)) { struct mds_group_info *mgi; LASSERT(vallen == sizeof(*mgi)); mgi = (struct mds_group_info *)val; /* Only want a specific OSC */ if (mgi->uuid && !obd_uuid_equals(mgi->uuid, &lov->lov_tgts[i]->ltd_uuid)) continue; err = obd_set_info_async(lov->lov_tgts[i]->ltd_exp, keylen, key, sizeof(int), &mgi->group, set); } else { /* Only want a specific OSC */ if (check_uuid && !obd_uuid_equals(val, &lov->lov_tgts[i]->ltd_uuid)) continue; err = obd_set_info_async(lov->lov_tgts[i]->ltd_exp, keylen, key, vallen, val, set); } if (!rc) rc = err; } lov_putref(obddev); if (no_set) { err = ptlrpc_set_wait(set); if (!rc) rc = err; ptlrpc_set_destroy(set); } RETURN(rc); } static int lov_checkmd(struct obd_export *exp, struct obd_export *md_exp, struct lov_stripe_md *lsm) { int rc; ENTRY; if (!lsm) RETURN(0); LASSERT(md_exp); LASSERT(lsm_op_find(lsm->lsm_magic) != NULL); rc = lsm_op_find(lsm->lsm_magic)->lsm_revalidate(lsm, md_exp->exp_obd); RETURN(rc); } int lov_test_and_clear_async_rc(struct lov_stripe_md *lsm) { int i, rc = 0; ENTRY; for (i = 0; i < lsm->lsm_stripe_count; i++) { struct lov_oinfo *loi = lsm->lsm_oinfo[i]; if (loi->loi_ar.ar_rc && !rc) rc = loi->loi_ar.ar_rc; loi->loi_ar.ar_rc = 0; } RETURN(rc); } EXPORT_SYMBOL(lov_test_and_clear_async_rc); static int lov_extent_calc(struct obd_export *exp, struct lov_stripe_md *lsm, int cmd, __u64 *offset) { __u32 ssize = lsm->lsm_stripe_size; __u64 start; start = *offset; do_div(start, ssize); start = start * ssize; CDEBUG(D_DLMTRACE, "offset "LPU64", stripe %u, start "LPU64 ", end "LPU64"\n", *offset, ssize, start, start + ssize - 1); if (cmd == OBD_CALC_STRIPE_END) { *offset = start + ssize - 1; } else if (cmd == OBD_CALC_STRIPE_START) { *offset = start; } else { LBUG(); } RETURN(0); } #if 0 struct lov_multi_wait { struct ldlm_lock *lock; wait_queue_t wait; int completed; int generation; }; int lov_complete_many(struct obd_export *exp, struct lov_stripe_md *lsm, struct lustre_handle *lockh) { struct lov_lock_handles *lov_lockh = NULL; struct lustre_handle *lov_lockhp; struct lov_obd *lov; struct lov_oinfo *loi; struct lov_multi_wait *queues; int rc = 0, i; ENTRY; ASSERT_LSM_MAGIC(lsm); if (!exp || !exp->exp_obd) RETURN(-ENODEV); LASSERT(lockh != NULL); if (lsm->lsm_stripe_count > 1) { lov_lockh = lov_handle2llh(lockh); if (lov_lockh == NULL) { CERROR("LOV: invalid lov lock handle %p\n", lockh); RETURN(-EINVAL); } lov_lockhp = lov_lockh->llh_handles; } else { lov_lockhp = lockh; } OBD_ALLOC(queues, lsm->lsm_stripe_count * sizeof(*queues)); if (queues == NULL) GOTO(out, rc = -ENOMEM); lov = &exp->exp_obd->u.lov; for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++, loi++, lov_lockhp++) { struct ldlm_lock *lock; struct obd_device *obd; lock = ldlm_handle2lock(lov_lockhp); if (lock == NULL) { CDEBUG(D_HA, "lov idx %d subobj "LPX64" no lock?\n", loi->loi_ost_idx, loi->loi_id); queues[i].completed = 1; continue; } queues[i].lock = lock; init_waitqueue_entry(&(queues[i].wait), current); add_wait_queue(lock->l_waitq, &(queues[i].wait)); obd = class_exp2obd(lock->l_conn_export); if (obd != NULL) imp = obd->u.cli.cl_import; if (imp != NULL) { spin_lock(&imp->imp_lock); queues[i].generation = imp->imp_generation; spin_unlock(&imp->imp_lock); } } lwi = LWI_TIMEOUT_INTR(obd_timeout * HZ, ldlm_expired_completion_wait, interrupted_completion_wait, &lwd); rc = l_wait_event_added(check_multi_complete(queues, lsm), &lwi); for (i = 0; i < lsm->lsm_stripe_count; i++) remove_wait_queue(lock->l_waitq, &(queues[i].wait)); if (rc == -EINTR || rc == -ETIMEDOUT) { } out: if (lov_lockh != NULL) lov_llh_put(lov_lockh); RETURN(rc); } #endif void lov_stripe_lock(struct lov_stripe_md *md) { LASSERT(md->lsm_lock_owner != cfs_current()); spin_lock(&md->lsm_lock); LASSERT(md->lsm_lock_owner == NULL); md->lsm_lock_owner = cfs_current(); } EXPORT_SYMBOL(lov_stripe_lock); void lov_stripe_unlock(struct lov_stripe_md *md) { LASSERT(md->lsm_lock_owner == cfs_current()); md->lsm_lock_owner = NULL; spin_unlock(&md->lsm_lock); } EXPORT_SYMBOL(lov_stripe_unlock); struct obd_ops lov_obd_ops = { .o_owner = THIS_MODULE, .o_setup = lov_setup, .o_precleanup = lov_precleanup, .o_cleanup = lov_cleanup, .o_process_config = lov_process_config, .o_connect = lov_connect, .o_disconnect = lov_disconnect, .o_statfs = lov_statfs, .o_statfs_async = lov_statfs_async, .o_packmd = lov_packmd, .o_unpackmd = lov_unpackmd, .o_checkmd = lov_checkmd, .o_create = lov_create, .o_destroy = lov_destroy, .o_getattr = lov_getattr, .o_getattr_async = lov_getattr_async, .o_setattr = lov_setattr, .o_setattr_async = lov_setattr_async, .o_brw = lov_brw, .o_brw_async = lov_brw_async, .o_prep_async_page = lov_prep_async_page, .o_queue_async_io = lov_queue_async_io, .o_set_async_flags = lov_set_async_flags, .o_queue_group_io = lov_queue_group_io, .o_trigger_group_io = lov_trigger_group_io, .o_teardown_async_page = lov_teardown_async_page, .o_merge_lvb = lov_merge_lvb, .o_adjust_kms = lov_adjust_kms, .o_punch = lov_punch, .o_sync = lov_sync, .o_enqueue = lov_enqueue, .o_match = lov_match, .o_change_cbdata = lov_change_cbdata, .o_cancel = lov_cancel, .o_cancel_unused = lov_cancel_unused, .o_join_lru = lov_join_lru, .o_iocontrol = lov_iocontrol, .o_get_info = lov_get_info, .o_set_info_async = lov_set_info_async, .o_extent_calc = lov_extent_calc, .o_llog_init = lov_llog_init, .o_llog_finish = lov_llog_finish, .o_notify = lov_notify, }; static quota_interface_t *quota_interface; extern quota_interface_t lov_quota_interface; cfs_mem_cache_t *lov_oinfo_slab; int __init lov_init(void) { struct lprocfs_static_vars lvars; int rc, rc2; ENTRY; lov_oinfo_slab = cfs_mem_cache_create("lov_oinfo", sizeof(struct lov_oinfo), 0, SLAB_HWCACHE_ALIGN); if (lov_oinfo_slab == NULL) return -ENOMEM; lprocfs_init_vars(lov, &lvars); request_module("lquota"); quota_interface = PORTAL_SYMBOL_GET(lov_quota_interface); init_obd_quota_ops(quota_interface, &lov_obd_ops); rc = class_register_type(&lov_obd_ops, NULL, lvars.module_vars, LUSTRE_LOV_NAME, NULL); if (rc) { if (quota_interface) PORTAL_SYMBOL_PUT(lov_quota_interface); rc2 = cfs_mem_cache_destroy(lov_oinfo_slab); LASSERT(rc2 == 0); } RETURN(rc); } #ifdef __KERNEL__ static void /*__exit*/ lov_exit(void) { int rc; if (quota_interface) PORTAL_SYMBOL_PUT(lov_quota_interface); class_unregister_type(LUSTRE_LOV_NAME); rc = cfs_mem_cache_destroy(lov_oinfo_slab); LASSERT(rc == 0); } MODULE_AUTHOR("Cluster File Systems, Inc. "); MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver"); MODULE_LICENSE("GPL"); cfs_module(lov, LUSTRE_VERSION_STRING, lov_init, lov_exit); #endif