*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include "lov_cl_internal.h"
-cfs_mem_cache_t *lov_page_kmem;
-cfs_mem_cache_t *lov_lock_kmem;
-cfs_mem_cache_t *lov_object_kmem;
-cfs_mem_cache_t *lov_thread_kmem;
-cfs_mem_cache_t *lov_session_kmem;
-cfs_mem_cache_t *lov_req_kmem;
-
-cfs_mem_cache_t *lovsub_page_kmem;
-cfs_mem_cache_t *lovsub_lock_kmem;
-cfs_mem_cache_t *lovsub_object_kmem;
-cfs_mem_cache_t *lovsub_req_kmem;
+struct kmem_cache *lov_lock_kmem;
+struct kmem_cache *lov_object_kmem;
+struct kmem_cache *lov_thread_kmem;
+struct kmem_cache *lov_session_kmem;
-cfs_mem_cache_t *lov_lock_link_kmem;
-
-/** Lock class of lov_device::ld_mutex. */
-struct lock_class_key cl_lov_device_mutex_class;
+struct kmem_cache *lovsub_object_kmem;
struct lu_kmem_descr lov_caches[] = {
- {
- .ckd_cache = &lov_page_kmem,
- .ckd_name = "lov_page_kmem",
- .ckd_size = sizeof (struct lov_page)
- },
- {
- .ckd_cache = &lov_lock_kmem,
- .ckd_name = "lov_lock_kmem",
- .ckd_size = sizeof (struct lov_lock)
- },
- {
- .ckd_cache = &lov_object_kmem,
- .ckd_name = "lov_object_kmem",
- .ckd_size = sizeof (struct lov_object)
- },
- {
- .ckd_cache = &lov_thread_kmem,
- .ckd_name = "lov_thread_kmem",
- .ckd_size = sizeof (struct lov_thread_info)
- },
- {
- .ckd_cache = &lov_session_kmem,
- .ckd_name = "lov_session_kmem",
- .ckd_size = sizeof (struct lov_session)
- },
- {
- .ckd_cache = &lov_req_kmem,
- .ckd_name = "lov_req_kmem",
- .ckd_size = sizeof (struct lov_req)
- },
- {
- .ckd_cache = &lovsub_page_kmem,
- .ckd_name = "lovsub_page_kmem",
- .ckd_size = sizeof (struct lovsub_page)
- },
- {
- .ckd_cache = &lovsub_lock_kmem,
- .ckd_name = "lovsub_lock_kmem",
- .ckd_size = sizeof (struct lovsub_lock)
- },
- {
- .ckd_cache = &lovsub_object_kmem,
- .ckd_name = "lovsub_object_kmem",
- .ckd_size = sizeof (struct lovsub_object)
- },
- {
- .ckd_cache = &lovsub_req_kmem,
- .ckd_name = "lovsub_req_kmem",
- .ckd_size = sizeof (struct lovsub_req)
- },
- {
- .ckd_cache = &lov_lock_link_kmem,
- .ckd_name = "lov_lock_link_kmem",
- .ckd_size = sizeof (struct lov_lock_link)
- },
- {
- .ckd_cache = NULL
- }
-};
-
-/*****************************************************************************
- *
- * Lov transfer operations.
- *
- */
-
-static void lov_req_completion(const struct lu_env *env,
- const struct cl_req_slice *slice, int ioret)
-{
- struct lov_req *lr;
-
- ENTRY;
- lr = cl2lov_req(slice);
- OBD_SLAB_FREE_PTR(lr, lov_req_kmem);
- EXIT;
-}
-
-static const struct cl_req_operations lov_req_ops = {
- .cro_completion = lov_req_completion
+ {
+ .ckd_cache = &lov_lock_kmem,
+ .ckd_name = "lov_lock_kmem",
+ .ckd_size = sizeof(struct lov_lock)
+ },
+ {
+ .ckd_cache = &lov_object_kmem,
+ .ckd_name = "lov_object_kmem",
+ .ckd_size = sizeof(struct lov_object)
+ },
+ {
+ .ckd_cache = &lov_thread_kmem,
+ .ckd_name = "lov_thread_kmem",
+ .ckd_size = sizeof(struct lov_thread_info)
+ },
+ {
+ .ckd_cache = &lov_session_kmem,
+ .ckd_name = "lov_session_kmem",
+ .ckd_size = sizeof(struct lov_session)
+ },
+ {
+ .ckd_cache = &lovsub_object_kmem,
+ .ckd_name = "lovsub_object_kmem",
+ .ckd_size = sizeof(struct lovsub_object)
+ },
+ {
+ .ckd_cache = NULL
+ }
};
/*****************************************************************************
*/
static void *lov_key_init(const struct lu_context *ctx,
- struct lu_context_key *key)
+ struct lu_context_key *key)
{
- struct lov_thread_info *info;
-
- OBD_SLAB_ALLOC_PTR_GFP(info, lov_thread_kmem, CFS_ALLOC_IO);
- if (info != NULL)
- CFS_INIT_LIST_HEAD(&info->lti_closure.clc_list);
- else
- info = ERR_PTR(-ENOMEM);
- return info;
+ struct lov_thread_info *info;
+
+ OBD_SLAB_ALLOC_PTR_GFP(info, lov_thread_kmem, GFP_NOFS);
+ if (!info)
+ info = ERR_PTR(-ENOMEM);
+ return info;
}
static void lov_key_fini(const struct lu_context *ctx,
- struct lu_context_key *key, void *data)
+ struct lu_context_key *key, void *data)
{
- struct lov_thread_info *info = data;
- LINVRNT(cfs_list_empty(&info->lti_closure.clc_list));
- OBD_SLAB_FREE_PTR(info, lov_thread_kmem);
+ struct lov_thread_info *info = data;
+ OBD_SLAB_FREE_PTR(info, lov_thread_kmem);
}
struct lu_context_key lov_key = {
- .lct_tags = LCT_CL_THREAD,
- .lct_init = lov_key_init,
- .lct_fini = lov_key_fini
+ .lct_tags = LCT_CL_THREAD,
+ .lct_init = lov_key_init,
+ .lct_fini = lov_key_fini
};
static void *lov_session_key_init(const struct lu_context *ctx,
- struct lu_context_key *key)
+ struct lu_context_key *key)
{
- struct lov_session *info;
+ struct lov_session *info;
- OBD_SLAB_ALLOC_PTR_GFP(info, lov_session_kmem, CFS_ALLOC_IO);
- if (info == NULL)
- info = ERR_PTR(-ENOMEM);
- return info;
+ OBD_SLAB_ALLOC_PTR_GFP(info, lov_session_kmem, GFP_NOFS);
+ if (!info)
+ info = ERR_PTR(-ENOMEM);
+ return info;
}
static void lov_session_key_fini(const struct lu_context *ctx,
- struct lu_context_key *key, void *data)
+ struct lu_context_key *key, void *data)
{
- struct lov_session *info = data;
- OBD_SLAB_FREE_PTR(info, lov_session_kmem);
+ struct lov_session *info = data;
+
+ OBD_SLAB_FREE_PTR(info, lov_session_kmem);
}
struct lu_context_key lov_session_key = {
- .lct_tags = LCT_SESSION,
- .lct_init = lov_session_key_init,
- .lct_fini = lov_session_key_fini
+ .lct_tags = LCT_SESSION,
+ .lct_init = lov_session_key_init,
+ .lct_fini = lov_session_key_fini
};
/* type constructor/destructor: lov_type_{init,fini,start,stop}() */
LU_TYPE_INIT_FINI(lov, &lov_key, &lov_session_key);
-static struct lu_device *lov_device_fini(const struct lu_env *env,
- struct lu_device *d)
-{
- int i;
- struct lov_device *ld = lu2lov_dev(d);
-
- LASSERT(ld->ld_lov != NULL);
- if (ld->ld_target == NULL)
- RETURN(NULL);
-
- lov_foreach_target(ld, i) {
- struct lovsub_device *lsd;
-
- lsd = ld->ld_target[i];
- if (lsd != NULL) {
- cl_stack_fini(env, lovsub2cl_dev(lsd));
- ld->ld_target[i] = NULL;
- }
- }
- RETURN(NULL);
-}
-static int lov_device_init(const struct lu_env *env, struct lu_device *d,
- const char *name, struct lu_device *next)
+static int lov_mdc_dev_init(const struct lu_env *env, struct lov_device *ld,
+ struct lu_device *mdc_dev, __u32 idx, __u32 nr)
{
- struct lov_device *ld = lu2lov_dev(d);
- int i;
- int rc = 0;
-
- LASSERT(d->ld_site != NULL);
- if (ld->ld_target == NULL)
- RETURN(rc);
-
- lov_foreach_target(ld, i) {
- struct lovsub_device *lsd;
- struct cl_device *cl;
- struct lov_tgt_desc *desc;
-
- desc = ld->ld_lov->lov_tgts[i];
- if (desc == NULL)
- continue;
-
- cl = cl_type_setup(env, d->ld_site, &lovsub_device_type,
- desc->ltd_obd->obd_lu_dev);
- if (IS_ERR(cl)) {
- rc = PTR_ERR(cl);
- break;
- }
- lsd = cl2lovsub_dev(cl);
- lsd->acid_idx = i;
- lsd->acid_super = ld;
- ld->ld_target[i] = lsd;
- }
+ struct cl_device *cl;
- if (rc)
- lov_device_fini(env, d);
- else
- ld->ld_flags |= LOV_DEV_INITIALIZED;
+ ENTRY;
+ cl = cl_type_setup(env, &ld->ld_site, &lovsub_device_type,
+ mdc_dev);
+ if (IS_ERR(cl))
+ RETURN(PTR_ERR(cl));
- RETURN(rc);
+ ld->ld_md_tgts[nr].ldm_mdc = cl;
+ ld->ld_md_tgts[nr].ldm_idx = idx;
+ RETURN(0);
}
-static int lov_req_init(const struct lu_env *env, struct cl_device *dev,
- struct cl_req *req)
+static struct lu_device *lov_device_fini(const struct lu_env *env,
+ struct lu_device *d)
{
- struct lov_req *lr;
- int result;
-
- ENTRY;
- OBD_SLAB_ALLOC_PTR_GFP(lr, lov_req_kmem, CFS_ALLOC_IO);
- if (lr != NULL) {
- cl_req_slice_add(req, &lr->lr_cl, dev, &lov_req_ops);
- result = 0;
- } else
- result = -ENOMEM;
- RETURN(result);
+ struct lov_device *ld = lu2lov_dev(d);
+ int i;
+
+ LASSERT(ld->ld_lov != NULL);
+
+ if (ld->ld_lmv) {
+ class_decref(ld->ld_lmv, "lov", d);
+ ld->ld_lmv = NULL;
+ }
+
+ if (ld->ld_md_tgts) {
+ for (i = 0; i < ld->ld_md_tgts_nr; i++) {
+ if (!ld->ld_md_tgts[i].ldm_mdc)
+ continue;
+
+ cl_stack_fini(env, ld->ld_md_tgts[i].ldm_mdc);
+ ld->ld_md_tgts[i].ldm_mdc = NULL;
+ ld->ld_lov->lov_mdc_tgts[i].lmtd_mdc = NULL;
+ }
+ }
+
+ if (ld->ld_target) {
+ lov_foreach_target(ld, i) {
+ struct lovsub_device *lsd;
+
+ lsd = ld->ld_target[i];
+ if (lsd) {
+ cl_stack_fini(env, lovsub2cl_dev(lsd));
+ ld->ld_target[i] = NULL;
+ }
+ }
+ }
+ RETURN(NULL);
}
-static const struct cl_device_operations lov_cl_ops = {
- .cdo_req_init = lov_req_init
-};
-
-static void lov_emerg_free(struct lov_device_emerg **emrg, int nr)
+static int lov_device_init(const struct lu_env *env, struct lu_device *d,
+ const char *name, struct lu_device *next)
{
- int i;
-
- for (i = 0; i < nr; ++i) {
- struct lov_device_emerg *em;
-
- em = emrg[i];
- if (em != NULL) {
- LASSERT(em->emrg_page_list.pl_nr == 0);
- if (em->emrg_env != NULL)
- cl_env_put(em->emrg_env, &em->emrg_refcheck);
- OBD_FREE_PTR(em);
- }
- }
- OBD_FREE(emrg, nr * sizeof emrg[0]);
+ struct lov_device *ld = lu2lov_dev(d);
+ int i;
+ int rc = 0;
+
+ /* check all added already MDC subdevices and initialize them */
+ for (i = 0; i < ld->ld_md_tgts_nr; i++) {
+ struct obd_device *mdc;
+ __u32 idx;
+
+ mdc = ld->ld_lov->lov_mdc_tgts[i].lmtd_mdc;
+ idx = ld->ld_lov->lov_mdc_tgts[i].lmtd_index;
+
+ if (!mdc)
+ continue;
+
+ rc = lov_mdc_dev_init(env, ld, mdc->obd_lu_dev, idx, i);
+ if (rc) {
+ CERROR("%s: failed to add MDC %s as target: rc = %d\n",
+ d->ld_obd->obd_name,
+ obd_uuid2str(&mdc->obd_uuid), rc);
+ GOTO(out_err, rc);
+ }
+ }
+
+ if (!ld->ld_target)
+ RETURN(0);
+
+ lov_foreach_target(ld, i) {
+ struct lovsub_device *lsd;
+ struct cl_device *cl;
+ struct lov_tgt_desc *desc;
+
+ desc = ld->ld_lov->lov_tgts[i];
+ if (!desc)
+ continue;
+
+ cl = cl_type_setup(env, &ld->ld_site, &lovsub_device_type,
+ desc->ltd_obd->obd_lu_dev);
+ if (IS_ERR(cl))
+ GOTO(out_err, rc = PTR_ERR(cl));
+
+ lsd = cl2lovsub_dev(cl);
+ ld->ld_target[i] = lsd;
+ }
+ ld->ld_flags |= LOV_DEV_INITIALIZED;
+ RETURN(0);
+
+out_err:
+ lu_device_fini(d);
+ RETURN(rc);
}
+/* Free the lov specific data created for the back end lu_device. */
static struct lu_device *lov_device_free(const struct lu_env *env,
- struct lu_device *d)
+ struct lu_device *d)
{
- struct lov_device *ld = lu2lov_dev(d);
- const int nr = ld->ld_target_nr;
-
- cl_device_fini(lu2cl_dev(d));
- if (ld->ld_target != NULL)
- OBD_FREE(ld->ld_target, nr * sizeof ld->ld_target[0]);
- if (ld->ld_emrg != NULL)
- lov_emerg_free(ld->ld_emrg, nr);
- OBD_FREE_PTR(ld);
- return NULL;
+ struct lov_device *ld = lu2lov_dev(d);
+ const int nr = ld->ld_target_nr;
+
+ lu_site_fini(&ld->ld_site);
+
+ cl_device_fini(lu2cl_dev(d));
+ if (ld->ld_target) {
+ OBD_FREE(ld->ld_target, nr * sizeof ld->ld_target[0]);
+ ld->ld_target = NULL;
+ }
+ if (ld->ld_md_tgts) {
+ OBD_FREE(ld->ld_md_tgts,
+ sizeof(*ld->ld_md_tgts) * LOV_MDC_TGT_MAX);
+ ld->ld_md_tgts = NULL;
+ }
+ /* free array of MDCs */
+ if (ld->ld_lov->lov_mdc_tgts) {
+ OBD_FREE(ld->ld_lov->lov_mdc_tgts,
+ sizeof(*ld->ld_lov->lov_mdc_tgts) * LOV_MDC_TGT_MAX);
+ ld->ld_lov->lov_mdc_tgts = NULL;
+ }
+
+ OBD_FREE_PTR(ld);
+ return NULL;
}
static void lov_cl_del_target(const struct lu_env *env, struct lu_device *dev,
- __u32 index)
+ __u32 index)
{
- struct lov_device *ld = lu2lov_dev(dev);
- ENTRY;
+ struct lov_device *ld = lu2lov_dev(dev);
- if (ld->ld_target[index] != NULL) {
- cl_stack_fini(env, lovsub2cl_dev(ld->ld_target[index]));
- ld->ld_target[index] = NULL;
- }
- EXIT;
-}
+ ENTRY;
-static struct lov_device_emerg **lov_emerg_alloc(int nr)
-{
- struct lov_device_emerg **emerg;
- int i;
- int result;
-
- OBD_ALLOC(emerg, nr * sizeof emerg[0]);
- if (emerg == NULL)
- return ERR_PTR(-ENOMEM);
- for (result = i = 0; i < nr && result == 0; i++) {
- struct lov_device_emerg *em;
-
- OBD_ALLOC_PTR(em);
- if (em != NULL) {
- emerg[i] = em;
- cl_page_list_init(&em->emrg_page_list);
- em->emrg_env = cl_env_alloc(&em->emrg_refcheck,
- LCT_REMEMBER|LCT_NOREF);
- if (!IS_ERR(em->emrg_env))
- em->emrg_env->le_ctx.lc_cookie = 0x2;
- else {
- result = PTR_ERR(em->emrg_env);
- em->emrg_env = NULL;
- }
- } else
- result = -ENOMEM;
- }
- if (result != 0) {
- lov_emerg_free(emerg, nr);
- emerg = ERR_PTR(result);
- }
- return emerg;
+ if (ld->ld_target[index]) {
+ cl_stack_fini(env, lovsub2cl_dev(ld->ld_target[index]));
+ ld->ld_target[index] = NULL;
+ }
+ EXIT;
}
static int lov_expand_targets(const struct lu_env *env, struct lov_device *dev)
{
- int result;
- __u32 tgt_size;
- __u32 sub_size;
-
- ENTRY;
- result = 0;
- tgt_size = dev->ld_lov->lov_tgt_size;
- sub_size = dev->ld_target_nr;
- if (sub_size < tgt_size) {
- struct lovsub_device **newd;
- struct lov_device_emerg **emerg;
- const size_t sz = sizeof newd[0];
-
- emerg = lov_emerg_alloc(tgt_size);
- if (IS_ERR(emerg))
- RETURN(PTR_ERR(emerg));
-
- OBD_ALLOC(newd, tgt_size * sz);
- if (newd != NULL) {
- mutex_lock(&dev->ld_mutex);
- if (sub_size > 0) {
- memcpy(newd, dev->ld_target, sub_size * sz);
- OBD_FREE(dev->ld_target, sub_size * sz);
- }
- dev->ld_target = newd;
- dev->ld_target_nr = tgt_size;
-
- if (dev->ld_emrg != NULL)
- lov_emerg_free(dev->ld_emrg, sub_size);
- dev->ld_emrg = emerg;
- mutex_unlock(&dev->ld_mutex);
- } else {
- lov_emerg_free(emerg, tgt_size);
- result = -ENOMEM;
- }
- }
- RETURN(result);
+ int result;
+ __u32 tgt_size;
+ __u32 sub_size;
+
+ ENTRY;
+ result = 0;
+ tgt_size = dev->ld_lov->lov_tgt_size;
+ sub_size = dev->ld_target_nr;
+ if (sub_size < tgt_size) {
+ struct lovsub_device **newd;
+ const size_t sz = sizeof(newd[0]);
+
+ OBD_ALLOC(newd, tgt_size * sz);
+ if (newd) {
+ if (sub_size > 0) {
+ memcpy(newd, dev->ld_target, sub_size * sz);
+ OBD_FREE(dev->ld_target, sub_size * sz);
+ }
+
+ dev->ld_target = newd;
+ dev->ld_target_nr = tgt_size;
+ } else {
+ result = -ENOMEM;
+ }
+ }
+
+ RETURN(result);
}
static int lov_cl_add_target(const struct lu_env *env, struct lu_device *dev,
- __u32 index)
+ __u32 index)
{
- struct obd_device *obd = dev->ld_obd;
- struct lov_device *ld = lu2lov_dev(dev);
- struct lov_tgt_desc *tgt;
- struct lovsub_device *lsd;
- struct cl_device *cl;
- int rc;
- ENTRY;
-
- obd_getref(obd);
-
- tgt = obd->u.lov.lov_tgts[index];
- LASSERT(tgt != NULL);
- LASSERT(tgt->ltd_obd != NULL);
-
- if (!tgt->ltd_obd->obd_set_up) {
- CERROR("Target %s not set up\n", obd_uuid2str(&tgt->ltd_uuid));
- RETURN(-EINVAL);
+ struct obd_device *obd = dev->ld_obd;
+ struct lov_device *ld = lu2lov_dev(dev);
+ struct lov_tgt_desc *tgt;
+ struct lovsub_device *lsd;
+ struct cl_device *cl;
+ int rc;
+
+ ENTRY;
+
+ lov_tgts_getref(obd);
+
+ tgt = obd->u.lov.lov_tgts[index];
+ LASSERT(tgt != NULL);
+ LASSERT(tgt->ltd_obd != NULL);
+
+ if (!tgt->ltd_obd->obd_set_up) {
+ CERROR("Target %s not set up\n", obd_uuid2str(&tgt->ltd_uuid));
+ RETURN(-EINVAL);
+ }
+
+ rc = lov_expand_targets(env, ld);
+ if (rc == 0 && ld->ld_flags & LOV_DEV_INITIALIZED) {
+ cl = cl_type_setup(env, &ld->ld_site, &lovsub_device_type,
+ tgt->ltd_obd->obd_lu_dev);
+ if (!IS_ERR(cl)) {
+ lsd = cl2lovsub_dev(cl);
+ ld->ld_target[index] = lsd;
+ } else {
+ CERROR("add failed (%d), deleting %s\n", rc,
+ obd_uuid2str(&tgt->ltd_uuid));
+ lov_cl_del_target(env, dev, index);
+ rc = PTR_ERR(cl);
+ }
}
- rc = lov_expand_targets(env, ld);
- if (rc == 0 && ld->ld_flags & LOV_DEV_INITIALIZED) {
- LASSERT(dev->ld_site != NULL);
-
- cl = cl_type_setup(env, dev->ld_site, &lovsub_device_type,
- tgt->ltd_obd->obd_lu_dev);
- if (!IS_ERR(cl)) {
- lsd = cl2lovsub_dev(cl);
- lsd->acid_idx = index;
- lsd->acid_super = ld;
- ld->ld_target[index] = lsd;
- } else {
- CERROR("add failed (%d), deleting %s\n", rc,
- obd_uuid2str(&tgt->ltd_uuid));
- lov_cl_del_target(env, dev, index);
- rc = PTR_ERR(cl);
- }
- }
- obd_putref(obd);
- RETURN(rc);
+ lov_tgts_putref(obd);
+
+ RETURN(rc);
+}
+
+/**
+ * Add new MDC target device in LOV.
+ *
+ * This function is part of the configuration log processing. It adds new MDC
+ * device to the MDC device array indexed by their indexes.
+ *
+ * \param[in] env execution environment
+ * \param[in] d LU device of LOV device
+ * \param[in] mdc MDC device to add
+ * \param[in] idx MDC device index
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
+static int lov_add_mdc_target(const struct lu_env *env, struct lu_device *d,
+ struct obd_device *mdc, __u32 idx)
+{
+ struct lov_device *ld = lu2lov_dev(d);
+ struct obd_device *lov_obd = d->ld_obd;
+ struct obd_device *lmv_obd;
+ int next;
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(mdc != NULL);
+ if (ld->ld_md_tgts_nr == LOV_MDC_TGT_MAX) {
+ /*
+ * If the maximum value of LOV_MDC_TGT_MAX will become too
+ * small then all MD target handling must be rewritten in LOD
+ * manner, check lod_add_device() and related functionality.
+ */
+ CERROR("%s: cannot serve more than %d MDC devices\n",
+ lov_obd->obd_name, LOV_MDC_TGT_MAX);
+ RETURN(-ERANGE);
+ }
+
+ /*
+ * grab FLD from lmv, do that here, when first MDC is added
+ * to be sure LMV is set up and can be found
+ */
+ if (!ld->ld_lmv) {
+ next = 0;
+ while ((lmv_obd = class_devices_in_group(&lov_obd->obd_uuid,
+ &next)) != NULL) {
+ if ((strncmp(lmv_obd->obd_type->typ_name,
+ LUSTRE_LMV_NAME,
+ strlen(LUSTRE_LMV_NAME)) == 0))
+ break;
+ }
+ if (!lmv_obd) {
+ CERROR("%s: cannot find LMV OBD by UUID (%s)\n",
+ lov_obd->obd_name,
+ obd_uuid2str(&lmv_obd->obd_uuid));
+ RETURN(-ENODEV);
+ }
+ spin_lock(&lmv_obd->obd_dev_lock);
+ class_incref(lmv_obd, "lov", ld);
+ spin_unlock(&lmv_obd->obd_dev_lock);
+ ld->ld_lmv = lmv_obd;
+ }
+
+ LASSERT(lov_obd->u.lov.lov_mdc_tgts[ld->ld_md_tgts_nr].lmtd_mdc ==
+ NULL);
+
+ if (ld->ld_flags & LOV_DEV_INITIALIZED) {
+ rc = lov_mdc_dev_init(env, ld, mdc->obd_lu_dev, idx,
+ ld->ld_md_tgts_nr);
+ if (rc) {
+ CERROR("%s: failed to add MDC %s as target: rc = %d\n",
+ lov_obd->obd_name, obd_uuid2str(&mdc->obd_uuid),
+ rc);
+ RETURN(rc);
+ }
+ }
+
+ lov_obd->u.lov.lov_mdc_tgts[ld->ld_md_tgts_nr].lmtd_mdc = mdc;
+ lov_obd->u.lov.lov_mdc_tgts[ld->ld_md_tgts_nr].lmtd_index = idx;
+ ld->ld_md_tgts_nr++;
+
+ RETURN(rc);
}
static int lov_process_config(const struct lu_env *env,
- struct lu_device *d, struct lustre_cfg *cfg)
+ struct lu_device *d, struct lustre_cfg *cfg)
{
- struct obd_device *obd = d->ld_obd;
- int cmd;
- int rc;
- int gen;
- __u32 index;
-
- obd_getref(obd);
-
- cmd = cfg->lcfg_command;
- rc = lov_process_config_base(d->ld_obd, cfg, &index, &gen);
- if (rc == 0) {
- switch(cmd) {
- case LCFG_LOV_ADD_OBD:
- case LCFG_LOV_ADD_INA:
- rc = lov_cl_add_target(env, d, index);
- if (rc != 0)
- lov_del_target(d->ld_obd, index, 0, 0);
- break;
- case LCFG_LOV_DEL_OBD:
- lov_cl_del_target(env, d, index);
- break;
- }
- }
- obd_putref(obd);
- RETURN(rc);
+ struct obd_device *obd = d->ld_obd;
+ int cmd;
+ int rc;
+ int gen;
+ u32 index;
+
+ lov_tgts_getref(obd);
+
+ cmd = cfg->lcfg_command;
+
+ rc = lov_process_config_base(d->ld_obd, cfg, &index, &gen);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ switch (cmd) {
+ case LCFG_LOV_ADD_OBD:
+ case LCFG_LOV_ADD_INA:
+ rc = lov_cl_add_target(env, d, index);
+ if (rc != 0)
+ lov_del_target(d->ld_obd, index, NULL, 0);
+ break;
+ case LCFG_LOV_DEL_OBD:
+ lov_cl_del_target(env, d, index);
+ break;
+ case LCFG_ADD_MDC:
+ {
+ struct obd_device *mdc;
+ struct obd_uuid tgt_uuid;
+
+ /*
+ * modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
+ * 2:0 3:1 4:lustre-MDT0000-mdc_UUID
+ */
+ if (LUSTRE_CFG_BUFLEN(cfg, 1) > sizeof(tgt_uuid.uuid))
+ GOTO(out, rc = -EINVAL);
+
+ obd_str2uuid(&tgt_uuid, lustre_cfg_buf(cfg, 1));
+
+ rc = kstrtou32(lustre_cfg_buf(cfg, 2), 10, &index);
+ if (rc)
+ GOTO(out, rc);
+
+ mdc = class_find_client_obd(&tgt_uuid, LUSTRE_MDC_NAME,
+ &obd->obd_uuid);
+ if (!mdc)
+ GOTO(out, rc = -ENODEV);
+ rc = lov_add_mdc_target(env, d, mdc, index);
+ break;
+ }
+ }
+out:
+ lov_tgts_putref(obd);
+ RETURN(rc);
}
static const struct lu_device_operations lov_lu_ops = {
- .ldo_object_alloc = lov_object_alloc,
- .ldo_process_config = lov_process_config,
+ .ldo_object_alloc = lov_object_alloc,
+ .ldo_process_config = lov_process_config,
};
static struct lu_device *lov_device_alloc(const struct lu_env *env,
- struct lu_device_type *t,
- struct lustre_cfg *cfg)
+ struct lu_device_type *t,
+ struct lustre_cfg *cfg)
{
- struct lu_device *d;
- struct lov_device *ld;
- struct obd_device *obd;
- int rc;
-
- OBD_ALLOC_PTR(ld);
- if (ld == NULL)
- RETURN(ERR_PTR(-ENOMEM));
-
- cl_device_init(&ld->ld_cl, t);
- d = lov2lu_dev(ld);
- d->ld_ops = &lov_lu_ops;
- ld->ld_cl.cd_ops = &lov_cl_ops;
-
- mutex_init(&ld->ld_mutex);
- lockdep_set_class(&ld->ld_mutex, &cl_lov_device_mutex_class);
-
- /* setup the LOV OBD */
- obd = class_name2obd(lustre_cfg_string(cfg, 0));
- LASSERT(obd != NULL);
- rc = lov_setup(obd, cfg);
- if (rc) {
- lov_device_free(env, d);
- RETURN(ERR_PTR(rc));
- }
-
- ld->ld_lov = &obd->u.lov;
- RETURN(d);
+ struct lu_device *d;
+ struct lov_device *ld;
+ struct obd_device *obd;
+ int rc;
+
+ OBD_ALLOC_PTR(ld);
+ if (!ld)
+ RETURN(ERR_PTR(-ENOMEM));
+
+ cl_device_init(&ld->ld_cl, t);
+ d = lov2lu_dev(ld);
+ d->ld_ops = &lov_lu_ops;
+
+ /* setup the LOV OBD */
+ obd = class_name2obd(lustre_cfg_string(cfg, 0));
+ LASSERT(obd != NULL);
+ rc = lov_setup(obd, cfg);
+ if (rc)
+ GOTO(out, rc);
+
+ /* Alloc MDC devices array */
+ /* XXX: need dynamic allocation at some moment */
+ OBD_ALLOC(ld->ld_md_tgts, sizeof(*ld->ld_md_tgts) * LOV_MDC_TGT_MAX);
+ if (!ld->ld_md_tgts)
+ GOTO(out, rc = -ENOMEM);
+
+ ld->ld_md_tgts_nr = 0;
+
+ ld->ld_lov = &obd->u.lov;
+ OBD_ALLOC(ld->ld_lov->lov_mdc_tgts,
+ sizeof(*ld->ld_lov->lov_mdc_tgts) * LOV_MDC_TGT_MAX);
+ if (!ld->ld_lov->lov_mdc_tgts)
+ GOTO(out_md_tgts, rc = -ENOMEM);
+
+ rc = lu_site_init(&ld->ld_site, d);
+ if (rc != 0)
+ GOTO(out_mdc_tgts, rc);
+
+ rc = lu_site_init_finish(&ld->ld_site);
+ if (rc != 0)
+ GOTO(out_site, rc);
+
+ RETURN(d);
+out_site:
+ lu_site_fini(&ld->ld_site);
+out_mdc_tgts:
+ OBD_FREE(ld->ld_lov->lov_mdc_tgts,
+ sizeof(*ld->ld_lov->lov_mdc_tgts) * LOV_MDC_TGT_MAX);
+ ld->ld_lov->lov_mdc_tgts = NULL;
+out_md_tgts:
+ OBD_FREE(ld->ld_md_tgts, sizeof(*ld->ld_md_tgts) * LOV_MDC_TGT_MAX);
+ ld->ld_md_tgts = NULL;
+out:
+ OBD_FREE_PTR(ld);
+
+ return ERR_PTR(rc);
}
static const struct lu_device_type_operations lov_device_type_ops = {
- .ldto_init = lov_type_init,
- .ldto_fini = lov_type_fini,
+ .ldto_init = lov_type_init,
+ .ldto_fini = lov_type_fini,
- .ldto_start = lov_type_start,
- .ldto_stop = lov_type_stop,
+ .ldto_start = lov_type_start,
+ .ldto_stop = lov_type_stop,
- .ldto_device_alloc = lov_device_alloc,
- .ldto_device_free = lov_device_free,
+ .ldto_device_alloc = lov_device_alloc,
+ .ldto_device_free = lov_device_free,
- .ldto_device_init = lov_device_init,
- .ldto_device_fini = lov_device_fini
+ .ldto_device_init = lov_device_init,
+ .ldto_device_fini = lov_device_fini
};
struct lu_device_type lov_device_type = {
- .ldt_tags = LU_DEVICE_CL,
- .ldt_name = LUSTRE_LOV_NAME,
- .ldt_ops = &lov_device_type_ops,
- .ldt_ctx_tags = LCT_CL_THREAD
+ .ldt_tags = LU_DEVICE_CL,
+ .ldt_name = LUSTRE_LOV_NAME,
+ .ldt_ops = &lov_device_type_ops,
+ .ldt_ctx_tags = LCT_CL_THREAD
};
-EXPORT_SYMBOL(lov_device_type);
/** @} lov */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff