/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2013, Intel Corporation.
*/
/*
* lustre/lod/lod_lov.c
* Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MDS
#include <obd_class.h>
#include "lod_internal.h"
/*
- * Keep a refcount of lod->lod_osts usage to prevent racing with
+ * Keep a refcount of lod->ltd_tgts usage to prevent racing with
* addition/deletion. Any function that expects lov_tgts to remain stationary
* must take a ref.
*
* \param lod - is the lod device from which we want to grab a reference
*/
-void lod_getref(struct lod_device *lod)
+void lod_getref(struct lod_tgt_descs *ltd)
{
- cfs_down_read(&lod->lod_rw_sem);
- cfs_mutex_lock(&lod->lod_mutex);
- lod->lod_refcount++;
- cfs_mutex_unlock(&lod->lod_mutex);
+ down_read(<d->ltd_rw_sem);
+ mutex_lock(<d->ltd_mutex);
+ ltd->ltd_refcount++;
+ mutex_unlock(<d->ltd_mutex);
}
/*
*
* \param lod - is the lod device from which we release a reference
*/
-void lod_putref(struct lod_device *lod)
+void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd)
{
- cfs_mutex_lock(&lod->lod_mutex);
- lod->lod_refcount--;
- if (lod->lod_refcount == 0 && lod->lod_death_row) {
- struct lod_ost_desc *ost_desc, *tmp;
+ mutex_lock(<d->ltd_mutex);
+ ltd->ltd_refcount--;
+ if (ltd->ltd_refcount == 0 && ltd->ltd_death_row) {
+ struct lod_tgt_desc *tgt_desc, *tmp;
int idx;
CFS_LIST_HEAD(kill);
- CDEBUG(D_CONFIG, "destroying %d lod desc\n",
- lod->lod_death_row);
+ CDEBUG(D_CONFIG, "destroying %d ltd desc\n",
+ ltd->ltd_death_row);
- cfs_foreach_bit(lod->lod_ost_bitmap, idx) {
- ost_desc = OST_TGT(lod, idx);
- LASSERT(ost_desc);
+ cfs_foreach_bit(ltd->ltd_tgt_bitmap, idx) {
+ tgt_desc = LTD_TGT(ltd, idx);
+ LASSERT(tgt_desc);
- if (!ost_desc->ltd_reap)
+ if (!tgt_desc->ltd_reap)
continue;
- cfs_list_add(&ost_desc->ltd_kill, &kill);
- /* XXX: remove from the pool */
- OST_TGT(lod, idx) = NULL;
- lod->lod_ostnr--;
- cfs_bitmap_clear(lod->lod_ost_bitmap, idx);
- if (ost_desc->ltd_active)
- lod->lod_desc.ld_active_tgt_count--;
- lod->lod_death_row--;
+ cfs_list_add(&tgt_desc->ltd_kill, &kill);
+ LTD_TGT(ltd, idx) = NULL;
+ /*FIXME: only support ost pool for now */
+ if (ltd == &lod->lod_ost_descs) {
+ lod_ost_pool_remove(&lod->lod_pool_info, idx);
+ if (tgt_desc->ltd_active)
+ lod->lod_desc.ld_active_tgt_count--;
+ }
+ ltd->ltd_tgtnr--;
+ cfs_bitmap_clear(ltd->ltd_tgt_bitmap, idx);
+ ltd->ltd_death_row--;
}
- cfs_mutex_unlock(&lod->lod_mutex);
- cfs_up_read(&lod->lod_rw_sem);
+ mutex_unlock(<d->ltd_mutex);
+ up_read(<d->ltd_rw_sem);
- cfs_list_for_each_entry_safe(ost_desc, tmp, &kill, ltd_kill) {
+ cfs_list_for_each_entry_safe(tgt_desc, tmp, &kill, ltd_kill) {
int rc;
- cfs_list_del(&ost_desc->ltd_kill);
- /* XXX: remove from QoS structures */
- /* disconnect from OSP */
- rc = obd_disconnect(ost_desc->ltd_exp);
+ cfs_list_del(&tgt_desc->ltd_kill);
+ if (ltd == &lod->lod_ost_descs) {
+ /* remove from QoS structures */
+ rc = qos_del_tgt(lod, tgt_desc);
+ if (rc)
+ CERROR("%s: qos_del_tgt(%s) failed:"
+ "rc = %d\n",
+ lod2obd(lod)->obd_name,
+ obd_uuid2str(&tgt_desc->ltd_uuid),
+ rc);
+ }
+ rc = obd_disconnect(tgt_desc->ltd_exp);
if (rc)
- CERROR("%s: failed to disconnect %s (%d)\n",
+ CERROR("%s: failed to disconnect %s: rc = %d\n",
lod2obd(lod)->obd_name,
- obd_uuid2str(&ost_desc->ltd_uuid), rc);
- OBD_FREE_PTR(ost_desc);
+ obd_uuid2str(&tgt_desc->ltd_uuid), rc);
+ OBD_FREE_PTR(tgt_desc);
+ }
+ } else {
+ mutex_unlock(<d->ltd_mutex);
+ up_read(<d->ltd_rw_sem);
+ }
+}
+
+static int ltd_bitmap_resize(struct lod_tgt_descs *ltd, __u32 newsize)
+{
+ cfs_bitmap_t *new_bitmap, *old_bitmap = NULL;
+ int rc = 0;
+ ENTRY;
+
+ /* grab write reference on the lod. Relocating the array requires
+ * exclusive access */
+
+ down_write(<d->ltd_rw_sem);
+ if (newsize <= ltd->ltd_tgts_size)
+ /* someone else has already resize the array */
+ GOTO(out, rc = 0);
+
+ /* allocate new bitmap */
+ new_bitmap = CFS_ALLOCATE_BITMAP(newsize);
+ if (!new_bitmap)
+ GOTO(out, rc = -ENOMEM);
+
+ if (ltd->ltd_tgts_size > 0) {
+ /* the bitmap already exists, we need
+ * to copy data from old one */
+ cfs_bitmap_copy(new_bitmap, ltd->ltd_tgt_bitmap);
+ old_bitmap = ltd->ltd_tgt_bitmap;
+ }
+
+ ltd->ltd_tgts_size = newsize;
+ ltd->ltd_tgt_bitmap = new_bitmap;
+
+ if (old_bitmap)
+ CFS_FREE_BITMAP(old_bitmap);
+
+ CDEBUG(D_CONFIG, "tgt size: %d\n", ltd->ltd_tgts_size);
+
+ EXIT;
+out:
+ up_write(<d->ltd_rw_sem);
+ return rc;
+}
+
+/*
+ * Connect LOD to a new OSP and add it to the device table.
+ *
+ * \param env - is the environment passed by the caller
+ * \param lod - is the LOD device to be connected to the new OSP
+ * \param osp - is the name of OSP device name about to be added
+ * \param index - is the OSP index
+ * \param gen - is the generation number
+ * \param tgt_index - is the group of the OSP.
+ * \param type - is the type of device (mdc or osc)
+ */
+int lod_add_device(const struct lu_env *env, struct lod_device *lod,
+ char *osp, unsigned index, unsigned gen, int tgt_index,
+ char *type, int active)
+{
+ struct obd_connect_data *data = NULL;
+ struct obd_export *exp = NULL;
+ struct obd_device *obd;
+ struct lu_device *ldev;
+ struct dt_device *d;
+ int rc;
+ struct lod_tgt_desc *tgt_desc;
+ struct lod_tgt_descs *ltd;
+ struct obd_uuid obd_uuid;
+ ENTRY;
+
+ CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, index, gen);
+
+ if (gen <= 0) {
+ CERROR("request to add OBD %s with invalid generation: %d\n",
+ osp, gen);
+ RETURN(-EINVAL);
+ }
+
+ obd_str2uuid(&obd_uuid, osp);
+
+ obd = class_find_client_obd(&obd_uuid, LUSTRE_OSP_NAME,
+ &lod->lod_dt_dev.dd_lu_dev.ld_obd->obd_uuid);
+ if (obd == NULL) {
+ CERROR("can't find %s device\n", osp);
+ RETURN(-EINVAL);
+ }
+
+ OBD_ALLOC_PTR(data);
+ if (data == NULL)
+ RETURN(-ENOMEM);
+
+ data->ocd_connect_flags = OBD_CONNECT_INDEX | OBD_CONNECT_VERSION;
+ data->ocd_version = LUSTRE_VERSION_CODE;
+ data->ocd_index = index;
+
+ if (strcmp(LUSTRE_OSC_NAME, type) == 0) {
+ data->ocd_connect_flags |= OBD_CONNECT_AT |
+ OBD_CONNECT_FULL20 |
+ OBD_CONNECT_INDEX |
+#ifdef HAVE_LRU_RESIZE_SUPPORT
+ OBD_CONNECT_LRU_RESIZE |
+#endif
+ OBD_CONNECT_MDS |
+ OBD_CONNECT_OSS_CAPA |
+ OBD_CONNECT_REQPORTAL |
+ OBD_CONNECT_SKIP_ORPHAN |
+ OBD_CONNECT_FID |
+ OBD_CONNECT_LVB_TYPE |
+ OBD_CONNECT_VERSION |
+ OBD_CONNECT_PINGLESS;
+
+ data->ocd_group = tgt_index;
+ ltd = &lod->lod_ost_descs;
+ } else {
+ struct obd_import *imp = obd->u.cli.cl_import;
+
+ data->ocd_ibits_known = MDS_INODELOCK_UPDATE;
+ data->ocd_connect_flags |= OBD_CONNECT_ACL |
+ OBD_CONNECT_MDS_CAPA |
+ OBD_CONNECT_OSS_CAPA |
+ OBD_CONNECT_IBITS |
+ OBD_CONNECT_MDS_MDS |
+ OBD_CONNECT_FID |
+ OBD_CONNECT_AT |
+ OBD_CONNECT_FULL20;
+ /* XXX set MDS-MDS flags, remove this when running this
+ * on client*/
+ data->ocd_connect_flags |= OBD_CONNECT_MDS_MDS;
+ spin_lock(&imp->imp_lock);
+ imp->imp_server_timeout = 1;
+ spin_unlock(&imp->imp_lock);
+ imp->imp_client->cli_request_portal = OUT_PORTAL;
+ CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
+ obd->obd_name);
+ ltd = &lod->lod_mdt_descs;
+ }
+
+ rc = obd_connect(env, &exp, obd, &obd->obd_uuid, data, NULL);
+ OBD_FREE_PTR(data);
+ if (rc) {
+ CERROR("%s: cannot connect to next dev %s (%d)\n",
+ obd->obd_name, osp, rc);
+ GOTO(out_free, rc);
+ }
+
+ LASSERT(obd->obd_lu_dev);
+ LASSERT(obd->obd_lu_dev->ld_site == lod->lod_dt_dev.dd_lu_dev.ld_site);
+
+ ldev = obd->obd_lu_dev;
+ d = lu2dt_dev(ldev);
+
+ /* Allocate ost descriptor and fill it */
+ OBD_ALLOC_PTR(tgt_desc);
+ if (!tgt_desc)
+ GOTO(out_conn, rc = -ENOMEM);
+
+ tgt_desc->ltd_tgt = d;
+ tgt_desc->ltd_exp = exp;
+ tgt_desc->ltd_uuid = obd->u.cli.cl_target_uuid;
+ tgt_desc->ltd_gen = gen;
+ tgt_desc->ltd_index = index;
+ tgt_desc->ltd_active = active;
+
+ lod_getref(ltd);
+ if (index >= ltd->ltd_tgts_size) {
+ /* we have to increase the size of the lod_osts array */
+ __u32 newsize;
+
+ newsize = max(ltd->ltd_tgts_size, (__u32)2);
+ while (newsize < index + 1)
+ newsize = newsize << 1;
+
+ /* lod_bitmap_resize() needs lod_rw_sem
+ * which we hold with th reference */
+ lod_putref(lod, ltd);
+
+ rc = ltd_bitmap_resize(ltd, newsize);
+ if (rc)
+ GOTO(out_desc, rc);
+
+ lod_getref(ltd);
+ }
+
+ mutex_lock(<d->ltd_mutex);
+ if (cfs_bitmap_check(ltd->ltd_tgt_bitmap, index)) {
+ CERROR("%s: device %d is registered already\n", obd->obd_name,
+ index);
+ GOTO(out_mutex, rc = -EEXIST);
+ }
+
+ if (ltd->ltd_tgt_idx[index / TGT_PTRS_PER_BLOCK] == NULL) {
+ OBD_ALLOC_PTR(ltd->ltd_tgt_idx[index / TGT_PTRS_PER_BLOCK]);
+ if (ltd->ltd_tgt_idx[index / TGT_PTRS_PER_BLOCK] == NULL) {
+ CERROR("can't allocate index to add %s\n",
+ obd->obd_name);
+ GOTO(out_mutex, rc = -ENOMEM);
+ }
+ }
+
+ if (!strcmp(LUSTRE_OSC_NAME, type)) {
+ /* pool and qos are not supported for MDS stack yet */
+ rc = lod_ost_pool_add(&lod->lod_pool_info, index,
+ lod->lod_osts_size);
+ if (rc) {
+ CERROR("%s: can't set up pool, failed with %d\n",
+ obd->obd_name, rc);
+ GOTO(out_mutex, rc);
+ }
+
+ rc = qos_add_tgt(lod, tgt_desc);
+ if (rc) {
+ CERROR("%s: qos_add_tgt failed with %d\n",
+ obd->obd_name, rc);
+ GOTO(out_pool, rc);
+ }
+
+ /* The new OST is now a full citizen */
+ if (index >= lod->lod_desc.ld_tgt_count)
+ lod->lod_desc.ld_tgt_count = index + 1;
+ if (active)
+ lod->lod_desc.ld_active_tgt_count++;
+ }
+
+ LTD_TGT(ltd, index) = tgt_desc;
+ cfs_bitmap_set(ltd->ltd_tgt_bitmap, index);
+ ltd->ltd_tgtnr++;
+ mutex_unlock(<d->ltd_mutex);
+ lod_putref(lod, ltd);
+ if (lod->lod_recovery_completed)
+ ldev->ld_ops->ldo_recovery_complete(env, ldev);
+
+ RETURN(0);
+
+out_pool:
+ lod_ost_pool_remove(&lod->lod_pool_info, index);
+out_mutex:
+ mutex_unlock(<d->ltd_mutex);
+ lod_putref(lod, ltd);
+out_desc:
+ OBD_FREE_PTR(tgt_desc);
+out_conn:
+ obd_disconnect(exp);
+out_free:
+ return rc;
+}
+
+/*
+ * helper function to schedule OST removal from the device table
+ */
+static void __lod_del_device(struct lod_tgt_descs *ltd,
+ unsigned idx)
+{
+ LASSERT(LTD_TGT(ltd, idx));
+ if (LTD_TGT(ltd, idx)->ltd_reap == 0) {
+ LTD_TGT(ltd, idx)->ltd_reap = 1;
+ ltd->ltd_death_row++;
+ }
+}
+
+int lod_fini_tgt(struct lod_device *lod, struct lod_tgt_descs *ltd)
+{
+ int idx;
+
+ if (ltd->ltd_tgts_size <= 0)
+ return 0;
+ lod_getref(ltd);
+ mutex_lock(<d->ltd_mutex);
+ cfs_foreach_bit(ltd->ltd_tgt_bitmap, idx)
+ __lod_del_device(ltd, idx);
+ mutex_unlock(<d->ltd_mutex);
+ lod_putref(lod, ltd);
+ CFS_FREE_BITMAP(ltd->ltd_tgt_bitmap);
+ for (idx = 0; idx < TGT_PTRS; idx++) {
+ if (ltd->ltd_tgt_idx[idx])
+ OBD_FREE_PTR(ltd->ltd_tgt_idx[idx]);
+ }
+ ltd->ltd_tgts_size = 0;
+ return 0;
+}
+
+/*
+ * Add support for administratively disabled OST (through the MGS).
+ * Schedule a target for deletion. Disconnection and real removal from the
+ * table takes place in lod_putref() once the last table user release its
+ * reference.
+ *
+ * \param env - is the environment passed by the caller
+ * \param lod - is the lod device currently connected to the OSP about to be
+ * removed
+ * \param osp - is the name of OSP device about to be removed
+ * \param idx - is the OSP index
+ * \param gen - is the generation number, not used currently
+ */
+int lod_del_device(const struct lu_env *env, struct lod_device *lod,
+ struct lod_tgt_descs *ltd, char *osp, unsigned idx,
+ unsigned gen)
+{
+ struct obd_device *obd;
+ int rc = 0;
+ struct obd_uuid uuid;
+ ENTRY;
+
+ CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, idx, gen);
+
+ obd_str2uuid(&uuid, osp);
+
+ obd = class_find_client_obd(&uuid, LUSTRE_OSP_NAME,
+ &lod->lod_dt_dev.dd_lu_dev.ld_obd->obd_uuid);
+ if (obd == NULL) {
+ CERROR("can't find %s device\n", osp);
+ RETURN(-EINVAL);
+ }
+
+ if (gen <= 0) {
+ CERROR("%s: request to remove OBD %s with invalid generation %d"
+ "\n", obd->obd_name, osp, gen);
+ RETURN(-EINVAL);
+ }
+
+ obd_str2uuid(&uuid, osp);
+
+ lod_getref(ltd);
+ mutex_lock(<d->ltd_mutex);
+ /* check that the index is allocated in the bitmap */
+ if (!cfs_bitmap_check(ltd->ltd_tgt_bitmap, idx) ||
+ !LTD_TGT(ltd, idx)) {
+ CERROR("%s: device %d is not set up\n", obd->obd_name, idx);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ /* check that the UUID matches */
+ if (!obd_uuid_equals(&uuid, <D_TGT(ltd, idx)->ltd_uuid)) {
+ CERROR("%s: LOD target UUID %s at index %d does not match %s\n",
+ obd->obd_name, obd_uuid2str(<D_TGT(ltd,idx)->ltd_uuid),
+ idx, osp);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ __lod_del_device(ltd, idx);
+ EXIT;
+out:
+ mutex_unlock(<d->ltd_mutex);
+ lod_putref(lod, ltd);
+ return(rc);
+}
+
+int lod_ea_store_resize(struct lod_thread_info *info, int size)
+{
+ int round = size_roundup_power2(size);
+
+ LASSERT(round <= lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3));
+ if (info->lti_ea_store) {
+ LASSERT(info->lti_ea_store_size);
+ LASSERT(info->lti_ea_store_size < round);
+ CDEBUG(D_INFO, "EA store size %d is not enough, need %d\n",
+ info->lti_ea_store_size, round);
+ OBD_FREE_LARGE(info->lti_ea_store, info->lti_ea_store_size);
+ info->lti_ea_store = NULL;
+ info->lti_ea_store_size = 0;
+ }
+
+ OBD_ALLOC_LARGE(info->lti_ea_store, round);
+ if (info->lti_ea_store == NULL)
+ RETURN(-ENOMEM);
+ info->lti_ea_store_size = round;
+ RETURN(0);
+}
+
+/*
+ * generate and write LOV EA for given striped object
+ */
+int lod_generate_and_set_lovea(const struct lu_env *env,
+ struct lod_object *lo, struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ const struct lu_fid *fid = lu_object_fid(&lo->ldo_obj.do_lu);
+ struct lov_mds_md_v1 *lmm;
+ struct lov_ost_data_v1 *objs;
+ __u32 magic;
+ int i, rc, lmm_size;
+ int cplen = 0;
+ ENTRY;
+
+ LASSERT(lo);
+
+ magic = lo->ldo_pool != NULL ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
+ lmm_size = lov_mds_md_size(lo->ldo_stripenr, magic);
+ if (info->lti_ea_store_size < lmm_size) {
+ rc = lod_ea_store_resize(info, lmm_size);
+ if (rc)
+ RETURN(rc);
+ }
+
+ if (lo->ldo_pattern == 0) /* default striping */
+ lo->ldo_pattern = LOV_PATTERN_RAID0;
+
+ lmm = info->lti_ea_store;
+
+ lmm->lmm_magic = cpu_to_le32(magic);
+ lmm->lmm_pattern = cpu_to_le32(lo->ldo_pattern);
+ fid_to_lmm_oi(fid, &lmm->lmm_oi);
+ lmm_oi_cpu_to_le(&lmm->lmm_oi, &lmm->lmm_oi);
+ lmm->lmm_stripe_size = cpu_to_le32(lo->ldo_stripe_size);
+ lmm->lmm_stripe_count = cpu_to_le16(lo->ldo_stripenr);
+ if (lo->ldo_pattern & LOV_PATTERN_F_RELEASED)
+ lmm->lmm_stripe_count = cpu_to_le16(lo->ldo_released_stripenr);
+ lmm->lmm_layout_gen = 0;
+ if (magic == LOV_MAGIC_V1) {
+ objs = &lmm->lmm_objects[0];
+ } else {
+ struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *) lmm;
+ cplen = strlcpy(v3->lmm_pool_name, lo->ldo_pool,
+ sizeof(v3->lmm_pool_name));
+ if (cplen >= sizeof(v3->lmm_pool_name))
+ RETURN(-E2BIG);
+ objs = &v3->lmm_objects[0];
+ }
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ const struct lu_fid *fid;
+ struct lod_device *lod;
+ __u32 index;
+
+ lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ LASSERT(lo->ldo_stripe[i]);
+ fid = lu_object_fid(&lo->ldo_stripe[i]->do_lu);
+
+ rc = fid_to_ostid(fid, &info->lti_ostid);
+ LASSERT(rc == 0);
+
+ ostid_cpu_to_le(&info->lti_ostid, &objs[i].l_ost_oi);
+ objs[i].l_ost_gen = cpu_to_le32(0);
+ rc = lod_fld_lookup(env, lod, fid, &index, LU_SEQ_RANGE_OST);
+ if (rc < 0) {
+ lod_object_free_striping(env, lo);
+ CERROR("%s: Can not locate "DFID": rc = %d\n",
+ lod2obd(lod)->obd_name, PFID(fid), rc);
+ RETURN(rc);
}
+ objs[i].l_ost_idx = cpu_to_le32(index);
+ }
+
+ info->lti_buf.lb_buf = lmm;
+ info->lti_buf.lb_len = lmm_size;
+ rc = dt_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV, 0,
+ th, BYPASS_CAPA);
+
+ RETURN(rc);
+}
+
+int lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ int rc;
+ ENTRY;
+
+ LASSERT(info);
+
+ if (unlikely(info->lti_ea_store_size == 0)) {
+ /* just to enter in allocation block below */
+ rc = -ERANGE;
} else {
- cfs_mutex_unlock(&lod->lod_mutex);
- cfs_up_read(&lod->lod_rw_sem);
+repeat:
+ info->lti_buf.lb_buf = info->lti_ea_store;
+ info->lti_buf.lb_len = info->lti_ea_store_size;
+ rc = dt_xattr_get(env, next, &info->lti_buf, XATTR_NAME_LOV,
+ BYPASS_CAPA);
}
+ /* if object is not striped or inaccessible */
+ if (rc == -ENODATA)
+ RETURN(0);
+
+ if (rc == -ERANGE) {
+ /* EA doesn't fit, reallocate new buffer */
+ rc = dt_xattr_get(env, next, &LU_BUF_NULL, XATTR_NAME_LOV,
+ BYPASS_CAPA);
+ if (rc == -ENODATA)
+ RETURN(0);
+ else if (rc < 0)
+ RETURN(rc);
+
+ LASSERT(rc > 0);
+ rc = lod_ea_store_resize(info, rc);
+ if (rc)
+ RETURN(rc);
+ goto repeat;
+ }
+
+ RETURN(rc);
+}
+
+int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lov_user_md_v3 *v3;
+ int rc;
+ int cplen = 0;
+ ENTRY;
+
+ LASSERT(S_ISDIR(dt->do_lu.lo_header->loh_attr));
+
+ /*
+ * store striping defaults into new directory
+ * used to implement defaults inheritance
+ */
+
+ /* probably nothing to inherite */
+ if (lo->ldo_striping_cached == 0)
+ RETURN(0);
+
+ if (LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size, lo->ldo_def_stripenr,
+ lo->ldo_def_stripe_offset))
+ RETURN(0);
+
+ /* XXX: use thread info */
+ OBD_ALLOC_PTR(v3);
+ if (v3 == NULL)
+ RETURN(-ENOMEM);
+
+ v3->lmm_magic = cpu_to_le32(LOV_MAGIC_V3);
+ v3->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
+ v3->lmm_stripe_size = cpu_to_le32(lo->ldo_def_stripe_size);
+ v3->lmm_stripe_count = cpu_to_le16(lo->ldo_def_stripenr);
+ v3->lmm_stripe_offset = cpu_to_le16(lo->ldo_def_stripe_offset);
+ if (lo->ldo_pool) {
+ cplen = strlcpy(v3->lmm_pool_name, lo->ldo_pool,
+ sizeof(v3->lmm_pool_name));
+ if (cplen >= sizeof(v3->lmm_pool_name)) {
+ OBD_FREE_PTR(v3);
+ RETURN(-E2BIG);
+ }
+ }
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+ rc = dt_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV, 0, th,
+ BYPASS_CAPA);
+
+ OBD_FREE_PTR(v3);
+
+ RETURN(rc);
+}
+
+static int validate_lod_and_idx(struct lod_device *md, int idx)
+{
+ if (unlikely(idx >= md->lod_ost_descs.ltd_tgts_size ||
+ !cfs_bitmap_check(md->lod_ost_bitmap, idx))) {
+ CERROR("%s: bad idx: %d of %d\n", lod2obd(md)->obd_name, idx,
+ md->lod_ost_descs.ltd_tgts_size);
+ return -EINVAL;
+ }
+
+ if (unlikely(OST_TGT(md, idx) == NULL)) {
+ CERROR("%s: bad lod_tgt_desc for idx: %d\n",
+ lod2obd(md)->obd_name, idx);
+ return -EINVAL;
+ }
+
+ if (unlikely(OST_TGT(md, idx)->ltd_ost == NULL)) {
+ CERROR("%s: invalid lod device, for idx: %d\n",
+ lod2obd(md)->obd_name , idx);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * allocate array of objects pointers, find/create objects
+ * stripenr and other fields should be initialized by this moment
+ */
+int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
+ struct lov_ost_data_v1 *objs)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *md;
+ struct lu_object *o, *n;
+ struct lu_device *nd;
+ struct dt_object **stripe;
+ int stripe_len;
+ int i, idx, rc = 0;
+ ENTRY;
+
+ LASSERT(lo != NULL);
+ md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ LASSERT(lo->ldo_stripe == NULL);
+ LASSERT(lo->ldo_stripenr > 0);
+ LASSERT(lo->ldo_stripe_size > 0);
+
+ stripe_len = lo->ldo_stripenr;
+ OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_len);
+ if (stripe == NULL)
+ RETURN(-ENOMEM);
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ ostid_le_to_cpu(&objs[i].l_ost_oi, &info->lti_ostid);
+ idx = le32_to_cpu(objs[i].l_ost_idx);
+ rc = ostid_to_fid(&info->lti_fid, &info->lti_ostid, idx);
+ if (rc != 0)
+ GOTO(out, rc);
+ LASSERTF(fid_is_sane(&info->lti_fid), ""DFID" insane!\n",
+ PFID(&info->lti_fid));
+ lod_getref(&md->lod_ost_descs);
+
+ rc = validate_lod_and_idx(md, idx);
+ if (unlikely(rc != 0)) {
+ lod_putref(md, &md->lod_ost_descs);
+ GOTO(out, rc);
+ }
+
+ nd = &OST_TGT(md,idx)->ltd_ost->dd_lu_dev;
+ lod_putref(md, &md->lod_ost_descs);
+
+ /* In the function below, .hs_keycmp resolves to
+ * u_obj_hop_keycmp() */
+ /* coverity[overrun-buffer-val] */
+ o = lu_object_find_at(env, nd, &info->lti_fid, NULL);
+ if (IS_ERR(o))
+ GOTO(out, rc = PTR_ERR(o));
+
+ n = lu_object_locate(o->lo_header, nd->ld_type);
+ LASSERT(n);
+
+ stripe[i] = container_of(n, struct dt_object, do_lu);
+ }
+
+out:
+ if (rc != 0) {
+ for (i = 0; i < stripe_len; i++)
+ if (stripe[i] != NULL)
+ lu_object_put(env, &stripe[i]->do_lu);
+
+ OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
+ } else {
+ lo->ldo_stripe = stripe;
+ lo->ldo_stripes_allocated = stripe_len;
+ }
+
+ RETURN(rc);
+}
+
+/*
+ * Parse striping information stored in lti_ea_store
+ */
+int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
+ const struct lu_buf *buf)
+{
+ struct lov_mds_md_v1 *lmm;
+ struct lov_ost_data_v1 *objs;
+ __u32 magic;
+ __u32 pattern;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(buf);
+ LASSERT(buf->lb_buf);
+ LASSERT(buf->lb_len);
+
+ lmm = (struct lov_mds_md_v1 *) buf->lb_buf;
+ magic = le32_to_cpu(lmm->lmm_magic);
+ pattern = le32_to_cpu(lmm->lmm_pattern);
+
+ if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3)
+ GOTO(out, rc = -EINVAL);
+ if (lov_pattern(pattern) != LOV_PATTERN_RAID0)
+ GOTO(out, rc = -EINVAL);
+
+ lo->ldo_pattern = pattern;
+ lo->ldo_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
+ lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
+ lo->ldo_stripenr = le16_to_cpu(lmm->lmm_stripe_count);
+ /* released file stripenr fixup. */
+ if (pattern & LOV_PATTERN_F_RELEASED)
+ lo->ldo_stripenr = 0;
+
+ LASSERT(buf->lb_len >= lov_mds_md_size(lo->ldo_stripenr, magic));
+
+ if (magic == LOV_MAGIC_V3) {
+ struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *) lmm;
+ objs = &v3->lmm_objects[0];
+ lod_object_set_pool(lo, v3->lmm_pool_name);
+ } else {
+ objs = &lmm->lmm_objects[0];
+ }
+
+ if (lo->ldo_stripenr > 0)
+ rc = lod_initialize_objects(env, lo, objs);
+
+out:
+ RETURN(rc);
+}
+
+/*
+ * Load and parse striping information, create in-core representation for the
+ * stripes
+ */
+int lod_load_striping(const struct lu_env *env, struct lod_object *lo)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(&lo->ldo_obj);
+ int rc;
+ ENTRY;
+
+ /*
+ * currently this code is supposed to be called from declaration
+ * phase only, thus the object is not expected to be locked by caller
+ */
+ dt_write_lock(env, next, 0);
+ /* already initialized? */
+ if (lo->ldo_stripe != NULL)
+ GOTO(out, rc = 0);
+
+ if (!dt_object_exists(next))
+ GOTO(out, rc = 0);
+
+ /* only regular files can be striped */
+ if (!(lu_object_attr(lod2lu_obj(lo)) & S_IFREG))
+ GOTO(out, rc = 0);
+
+ rc = lod_get_lov_ea(env, lo);
+ if (rc <= 0)
+ GOTO(out, rc);
+
+ /*
+ * there is LOV EA (striping information) in this object
+ * let's parse it and create in-core objects for the stripes
+ */
+ info->lti_buf.lb_buf = info->lti_ea_store;
+ info->lti_buf.lb_len = info->lti_ea_store_size;
+ rc = lod_parse_striping(env, lo, &info->lti_buf);
+out:
+ dt_write_unlock(env, next);
+ RETURN(rc);
+}
+
+int lod_verify_striping(struct lod_device *d, const struct lu_buf *buf,
+ int specific)
+{
+ struct lov_user_md_v1 *lum;
+ struct lov_user_md_v3 *lum3;
+ struct pool_desc *pool = NULL;
+ __u32 magic;
+ __u32 stripe_size;
+ __u16 stripe_count;
+ __u16 stripe_offset;
+ size_t lum_size;
+ int rc = 0;
+ ENTRY;
+
+ lum = buf->lb_buf;
+
+ LASSERT(sizeof(*lum) < sizeof(*lum3));
+
+ if (buf->lb_len < sizeof(*lum)) {
+ CDEBUG(D_IOCTL, "buf len %zd too small for lov_user_md\n",
+ buf->lb_len);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ magic = le32_to_cpu(lum->lmm_magic);
+ if (magic != LOV_USER_MAGIC_V1 &&
+ magic != LOV_USER_MAGIC_V3 &&
+ magic != LOV_MAGIC_V1_DEF &&
+ magic != LOV_MAGIC_V3_DEF) {
+ CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#x\n", magic);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if ((specific && le32_to_cpu(lum->lmm_pattern) != LOV_PATTERN_RAID0) ||
+ (!specific && lum->lmm_pattern != 0)) {
+ CDEBUG(D_IOCTL, "bad userland stripe pattern: %#x\n",
+ le32_to_cpu(lum->lmm_pattern));
+ GOTO(out, rc = -EINVAL);
+ }
+
+ /* 64kB is the largest common page size we see (ia64), and matches the
+ * check in lfs */
+ stripe_size = le32_to_cpu(lum->lmm_stripe_size);
+ if (stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
+ CDEBUG(D_IOCTL, "stripe size %u not a multiple of %u\n",
+ stripe_size, LOV_MIN_STRIPE_SIZE);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ /* an offset of -1 is treated as a "special" valid offset */
+ stripe_offset = le16_to_cpu(lum->lmm_stripe_offset);
+ if (stripe_offset != (typeof(stripe_offset))-1) {
+ /* if offset is not within valid range [0, osts_size) */
+ if (stripe_offset >= d->lod_osts_size) {
+ CDEBUG(D_IOCTL, "stripe offset %u >= bitmap size %u\n",
+ stripe_offset, d->lod_osts_size);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ /* if lmm_stripe_offset is *not* in bitmap */
+ if (!cfs_bitmap_check(d->lod_ost_bitmap, stripe_offset)) {
+ CDEBUG(D_IOCTL, "stripe offset %u not in bitmap\n",
+ stripe_offset);
+ GOTO(out, rc = -EINVAL);
+ }
+ }
+
+ stripe_count = le16_to_cpu(lum->lmm_stripe_count);
+ if (magic == LOV_USER_MAGIC_V1 || magic == LOV_MAGIC_V1_DEF)
+ lum_size = offsetof(struct lov_user_md_v1,
+ lmm_objects[stripe_count]);
+ else if (magic == LOV_USER_MAGIC_V3 || magic == LOV_MAGIC_V3_DEF)
+ lum_size = offsetof(struct lov_user_md_v3,
+ lmm_objects[stripe_count]);
+ else
+ LBUG();
+
+ if (specific && buf->lb_len != lum_size) {
+ CDEBUG(D_IOCTL, "invalid buf len %zd for lov_user_md with "
+ "magic %#x and stripe_count %u\n",
+ buf->lb_len, magic, stripe_count);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (!(magic == LOV_USER_MAGIC_V3 || magic == LOV_MAGIC_V3_DEF))
+ goto out;
+
+ lum3 = buf->lb_buf;
+ if (buf->lb_len < sizeof(*lum3)) {
+ CDEBUG(D_IOCTL, "buf len %zd too small for lov_user_md_v3\n",
+ buf->lb_len);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ /* In the function below, .hs_keycmp resolves to
+ * pool_hashkey_keycmp() */
+ /* coverity[overrun-buffer-val] */
+ pool = lod_find_pool(d, lum3->lmm_pool_name);
+ if (pool == NULL)
+ goto out;
+
+ if (stripe_offset != (typeof(stripe_offset))-1) {
+ rc = lod_check_index_in_pool(stripe_offset, pool);
+ if (rc < 0)
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (specific && stripe_count > pool_tgt_count(pool)) {
+ CDEBUG(D_IOCTL,
+ "stripe count %u > # OSTs %u in the pool\n",
+ stripe_count, pool_tgt_count(pool));
+ GOTO(out, rc = -EINVAL);
+ }
+
+out:
+ if (pool != NULL)
+ lod_pool_putref(pool);
+
+ RETURN(rc);
+}
+
+void lod_fix_desc_stripe_size(__u64 *val)
+{
+ if (*val < LOV_MIN_STRIPE_SIZE) {
+ if (*val != 0)
+ LCONSOLE_INFO("Increasing default stripe size to "
+ "minimum value %u\n",
+ LOV_DEFAULT_STRIPE_SIZE);
+ *val = LOV_DEFAULT_STRIPE_SIZE;
+ } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
+ *val &= ~(LOV_MIN_STRIPE_SIZE - 1);
+ LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
+ "multiple of %u)\n",
+ *val, LOV_MIN_STRIPE_SIZE);
+ }
+}
+
+void lod_fix_desc_stripe_count(__u32 *val)
+{
+ if (*val == 0)
+ *val = 1;
+}
+
+void lod_fix_desc_pattern(__u32 *val)
+{
+ /* from lov_setstripe */
+ if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) {
+ LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val);
+ *val = 0;
+ }
+}
+
+void lod_fix_desc_qos_maxage(__u32 *val)
+{
+ /* fix qos_maxage */
+ if (*val == 0)
+ *val = QOS_DEFAULT_MAXAGE;
+}
+
+void lod_fix_desc(struct lov_desc *desc)
+{
+ lod_fix_desc_stripe_size(&desc->ld_default_stripe_size);
+ lod_fix_desc_stripe_count(&desc->ld_default_stripe_count);
+ lod_fix_desc_pattern(&desc->ld_pattern);
+ lod_fix_desc_qos_maxage(&desc->ld_qos_maxage);
+}
+
+int lod_pools_init(struct lod_device *lod, struct lustre_cfg *lcfg)
+{
+ struct obd_device *obd;
+ struct lov_desc *desc;
+ int rc;
+ ENTRY;
+
+ obd = class_name2obd(lustre_cfg_string(lcfg, 0));
+ LASSERT(obd != NULL);
+ obd->obd_lu_dev = &lod->lod_dt_dev.dd_lu_dev;
+
+ if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
+ CERROR("LOD 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);
+ }
+ }
+
+ lod_fix_desc(desc);
+
+ desc->ld_active_tgt_count = 0;
+ lod->lod_desc = *desc;
+
+ lod->lod_sp_me = LUSTRE_SP_CLI;
+
+ /* Set up allocation policy (QoS and RR) */
+ CFS_INIT_LIST_HEAD(&lod->lod_qos.lq_oss_list);
+ init_rwsem(&lod->lod_qos.lq_rw_sem);
+ lod->lod_qos.lq_dirty = 1;
+ lod->lod_qos.lq_rr.lqr_dirty = 1;
+ lod->lod_qos.lq_reset = 1;
+ /* Default priority is toward free space balance */
+ lod->lod_qos.lq_prio_free = 232;
+ /* Default threshold for rr (roughly 17%) */
+ lod->lod_qos.lq_threshold_rr = 43;
+
+ /* Set up OST pool environment */
+ lod->lod_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
+ HASH_POOLS_MAX_BITS,
+ HASH_POOLS_BKT_BITS, 0,
+ CFS_HASH_MIN_THETA,
+ CFS_HASH_MAX_THETA,
+ &pool_hash_operations,
+ CFS_HASH_DEFAULT);
+ if (lod->lod_pools_hash_body == NULL)
+ RETURN(-ENOMEM);
+
+ CFS_INIT_LIST_HEAD(&lod->lod_pool_list);
+ lod->lod_pool_count = 0;
+ rc = lod_ost_pool_init(&lod->lod_pool_info, 0);
+ if (rc)
+ GOTO(out_hash, rc);
+ rc = lod_ost_pool_init(&lod->lod_qos.lq_rr.lqr_pool, 0);
+ if (rc)
+ GOTO(out_pool_info, rc);
+
+ RETURN(0);
+
+out_pool_info:
+ lod_ost_pool_free(&lod->lod_pool_info);
+out_hash:
+ cfs_hash_putref(lod->lod_pools_hash_body);
+
+ return rc;
+}
+
+int lod_pools_fini(struct lod_device *lod)
+{
+ struct obd_device *obd = lod2obd(lod);
+ cfs_list_t *pos, *tmp;
+ struct pool_desc *pool;
+ ENTRY;
+
+ cfs_list_for_each_safe(pos, tmp, &lod->lod_pool_list) {
+ pool = cfs_list_entry(pos, struct pool_desc, pool_list);
+ /* free pool structs */
+ CDEBUG(D_INFO, "delete pool %p\n", pool);
+ /* In the function below, .hs_keycmp resolves to
+ * pool_hashkey_keycmp() */
+ /* coverity[overrun-buffer-val] */
+ lod_pool_del(obd, pool->pool_name);
+ }
+
+ cfs_hash_putref(lod->lod_pools_hash_body);
+ lod_ost_pool_free(&(lod->lod_qos.lq_rr.lqr_pool));
+ lod_ost_pool_free(&lod->lod_pool_info);
+
+ RETURN(0);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff