* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2016, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* lustre/lod/lod_object.c
#define DEBUG_SUBSYSTEM S_MDS
+#include <linux/random.h>
+
#include <obd.h>
#include <obd_class.h>
#include <obd_support.h>
return dt_attr_get(env, dt_object_child(dt), attr);
}
+static inline void lod_adjust_stripe_info(struct lod_layout_component *comp,
+ struct lov_desc *desc)
+{
+ if (comp->llc_pattern != LOV_PATTERN_MDT) {
+ if (!comp->llc_stripe_count)
+ comp->llc_stripe_count =
+ desc->ld_default_stripe_count;
+ }
+ if (comp->llc_stripe_size <= 0)
+ comp->llc_stripe_size = desc->ld_default_stripe_size;
+}
+
int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
struct thandle *th,
struct lod_obj_stripe_cb_data *data)
int rc = 0;
__u32 i;
__u32 j;
+ bool is_specific = false;
ENTRY;
/* The lum has been verifed in lod_verify_md_striping */
- LASSERT(le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC);
+ LASSERT(le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC ||
+ le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC);
LASSERT(le32_to_cpu(lum->lum_stripe_count) > 0);
stripe_count = le32_to_cpu(lum->lum_stripe_count);
/* Start index must be the master MDT */
master_index = lu_site2seq(lod2lu_dev(lod)->ld_site)->ss_node_id;
idx_array[0] = master_index;
+ if (le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC) {
+ is_specific = true;
+ for (i = 1; i < stripe_count; i++)
+ idx_array[i] = le32_to_cpu(lum->lum_objects[i].lum_mds);
+ }
+
for (i = 0; i < stripe_count; i++) {
struct lod_tgt_desc *tgt = NULL;
struct dt_object *dto;
CDEBUG(D_INFO, "try idx %d, mdt cnt %u, allocated %u\n",
idx, lod->lod_remote_mdt_count + 1, i);
- if (likely(!OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))) {
+ if (likely(!is_specific &&
+ !OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))) {
/* check whether the idx already exists
* in current allocated array */
for (k = 0; k < i; k++) {
idx, i, PFID(&fid));
idx_array[i] = idx;
/* Set the start index for next stripe allocation */
- if (i < stripe_count - 1)
+ if (!is_specific && i < stripe_count - 1)
idx_array[i + 1] = (idx + 1) %
(lod->lod_remote_mdt_count + 1);
/* tgt_dt and fid must be ready after search avaible OSP
struct thandle *th)
{
struct lod_object *lo = lod_dt_obj(dt);
- struct lod_device *lod = lu2lod_dev(dt->do_lu.lo_dev);
- struct lmv_user_md_v1 *lum;
+ struct lmv_user_md_v1 *lum = lum_buf->lb_buf;
int rc;
ENTRY;
- lum = lum_buf->lb_buf;
LASSERT(lum != NULL);
CDEBUG(D_INFO, "lum magic = %x count = %u offset = %d\n",
le32_to_cpu(lum->lum_magic), le32_to_cpu(lum->lum_stripe_count),
(int)le32_to_cpu(lum->lum_stripe_offset));
- if (le32_to_cpu(lum->lum_stripe_count) == 0)
+ if (lo->ldo_dir_stripe_count == 0)
GOTO(out, rc = 0);
- rc = lod_verify_md_striping(lod, lum);
- if (rc != 0)
- GOTO(out, rc);
-
/* prepare dir striped objects */
rc = lod_prep_md_striped_create(env, dt, attr, lum, dof, th);
if (rc != 0) {
struct lod_obj_stripe_cb_data *data)
{
struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *comp = &lo->ldo_comp_entries[comp_idx];
struct filter_fid *ff = &info->lti_ff;
struct lu_buf *buf = &info->lti_buf;
int rc;
buf->lb_buf = ff;
buf->lb_len = sizeof(*ff);
rc = dt_xattr_get(env, dt, buf, XATTR_NAME_FID);
- if (rc == -ENODATA)
- return 0;
-
- if (rc < 0)
+ if (rc < 0) {
+ if (rc == -ENODATA)
+ return 0;
return rc;
+ }
+ filter_fid_le_to_cpu(ff, ff, sizeof(*ff));
+ if (lu_fid_eq(lu_object_fid(&lo->ldo_obj.do_lu), &ff->ff_parent) &&
+ ff->ff_layout.ol_comp_id == comp->llc_id)
+ return 0;
+
+ /* rewrite filter_fid */
+ memset(ff, 0, sizeof(*ff));
ff->ff_parent = *lu_object_fid(&lo->ldo_obj.do_lu);
ff->ff_parent.f_ver = stripe_idx;
- fid_cpu_to_le(&ff->ff_parent, &ff->ff_parent);
+ ff->ff_layout.ol_stripe_size = comp->llc_stripe_size;
+ ff->ff_layout.ol_stripe_count = comp->llc_stripe_count;
+ ff->ff_layout.ol_comp_id = comp->llc_id;
+ ff->ff_layout.ol_comp_start = comp->llc_extent.e_start;
+ ff->ff_layout.ol_comp_end = comp->llc_extent.e_end;
+ filter_fid_cpu_to_le(ff, ff, sizeof(*ff));
+
if (data->locd_declare)
rc = lod_sub_declare_xattr_set(env, dt, buf, XATTR_NAME_FID,
LU_XATTR_REPLACE, th);
LASSERT(lo->ldo_is_composite);
- if (lo->ldo_flr_state != LCM_FL_NOT_FLR)
+ if (lo->ldo_flr_state != LCM_FL_NONE)
RETURN(-EBUSY);
rc = lod_verify_striping(d, lo, buf, false);
lod_comp->llc_flags = comp_v1->lcm_entries[i].lcme_flags;
lod_comp->llc_stripe_count = v1->lmm_stripe_count;
- if (!lod_comp->llc_stripe_count ||
- lod_comp->llc_stripe_count == (__u16)-1)
- lod_comp->llc_stripe_count =
- desc->ld_default_stripe_count;
lod_comp->llc_stripe_size = v1->lmm_stripe_size;
- if (!lod_comp->llc_stripe_size)
- lod_comp->llc_stripe_size =
- desc->ld_default_stripe_size;
+ lod_adjust_stripe_info(lod_comp, desc);
if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
v3 = (struct lov_user_md_v3 *) v1;
struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
struct lod_object *lo = lod_dt_obj(dt);
struct lov_comp_md_v1 *comp_v1 = buf->lb_buf;
- __u32 magic, id;
+ __u32 magic;
int i, j, rc;
bool changed = false;
ENTRY;
}
for (i = 0; i < comp_v1->lcm_entry_count; i++) {
- id = comp_v1->lcm_entries[i].lcme_id;
+ __u32 id = comp_v1->lcm_entries[i].lcme_id;
+ __u32 flags = comp_v1->lcm_entries[i].lcme_flags;
+
+ if (flags & LCME_FL_INIT) {
+ if (changed)
+ lod_object_free_striping(env, lo);
+ RETURN(-EINVAL);
+ }
for (j = 0; j < lo->ldo_comp_cnt; j++) {
lod_comp = &lo->ldo_comp_entries[j];
- if (id == lod_comp->llc_id || id == LCME_ID_ALL) {
- lod_comp->llc_flags =
- comp_v1->lcm_entries[i].lcme_flags;
- changed = true;
+ if (id != lod_comp->llc_id)
+ continue;
+
+ if (flags & LCME_FL_NEG) {
+ flags &= ~LCME_FL_NEG;
+ lod_comp->llc_flags &= ~flags;
+ } else {
+ lod_comp->llc_flags |= flags;
}
+ changed = true;
}
}
lod_obj_inc_layout_gen(lo);
info->lti_buf.lb_len = lod_comp_md_size(lo, false);
- rc = lod_sub_declare_xattr_set(env, dt, &info->lti_buf,
- XATTR_NAME_LOV, 0, th);
+ rc = lod_sub_declare_xattr_set(env, dt_object_child(dt), &info->lti_buf,
+ XATTR_NAME_LOV, LU_XATTR_REPLACE, th);
RETURN(rc);
}
LASSERT(lo->ldo_is_composite);
- if (lo->ldo_flr_state != LCM_FL_NOT_FLR)
+ if (lo->ldo_flr_state != LCM_FL_NONE)
RETURN(-EBUSY);
magic = comp_v1->lcm_magic;
RETURN(-EINVAL);
}
+ if (id == LCME_ID_INVAL && !flags) {
+ CDEBUG(D_LAYOUT, "%s: no id or flags specified.\n",
+ lod2obd(d)->obd_name);
+ RETURN(-EINVAL);
+ }
+
if (flags & LCME_FL_NEG) {
neg_flags = flags & ~LCME_FL_NEG;
flags = 0;
}
/**
+ * Convert a plain file lov_mds_md to a composite layout.
+ *
+ * \param[in,out] info the thread info::lti_ea_store buffer contains little
+ * endian plain file layout
+ *
+ * \retval 0 on success, <0 on failure
+ */
+static int lod_layout_convert(struct lod_thread_info *info)
+{
+ struct lov_mds_md *lmm = info->lti_ea_store;
+ struct lov_mds_md *lmm_save;
+ struct lov_comp_md_v1 *lcm;
+ struct lov_comp_md_entry_v1 *lcme;
+ size_t size;
+ __u32 blob_size;
+ int rc = 0;
+ ENTRY;
+
+ /* realloc buffer to a composite layout which contains one component */
+ blob_size = lov_mds_md_size(le16_to_cpu(lmm->lmm_stripe_count),
+ le32_to_cpu(lmm->lmm_magic));
+ size = sizeof(*lcm) + sizeof(*lcme) + blob_size;
+
+ OBD_ALLOC_LARGE(lmm_save, blob_size);
+ if (!lmm_save)
+ GOTO(out, rc = -ENOMEM);
+
+ memcpy(lmm_save, lmm, blob_size);
+
+ if (info->lti_ea_store_size < size) {
+ rc = lod_ea_store_resize(info, size);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ lcm = info->lti_ea_store;
+ lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
+ lcm->lcm_size = cpu_to_le32(size);
+ lcm->lcm_layout_gen = cpu_to_le32(le16_to_cpu(
+ lmm_save->lmm_layout_gen));
+ lcm->lcm_flags = cpu_to_le16(LCM_FL_NONE);
+ lcm->lcm_entry_count = cpu_to_le16(1);
+ lcm->lcm_mirror_count = 0;
+
+ lcme = &lcm->lcm_entries[0];
+ lcme->lcme_flags = cpu_to_le32(LCME_FL_INIT);
+ lcme->lcme_extent.e_start = 0;
+ lcme->lcme_extent.e_end = cpu_to_le64(OBD_OBJECT_EOF);
+ lcme->lcme_offset = cpu_to_le32(sizeof(*lcm) + sizeof(*lcme));
+ lcme->lcme_size = cpu_to_le32(blob_size);
+
+ memcpy((char *)lcm + lcme->lcme_offset, (char *)lmm_save, blob_size);
+
+ EXIT;
+out:
+ if (lmm_save)
+ OBD_FREE_LARGE(lmm_save, blob_size);
+ return rc;
+}
+
+/**
* Merge layouts to form a mirrored file.
*/
static int lod_declare_layout_merge(const struct lu_env *env,
RETURN(rc ? : -ENODATA);
cur_lcm = info->lti_ea_store;
- if (le32_to_cpu(cur_lcm->lcm_magic) != LOV_MAGIC_COMP_V1)
- RETURN(-EINVAL);
+ switch (le32_to_cpu(cur_lcm->lcm_magic)) {
+ case LOV_MAGIC_V1:
+ case LOV_MAGIC_V3:
+ rc = lod_layout_convert(info);
+ break;
+ case LOV_MAGIC_COMP_V1:
+ rc = 0;
+ break;
+ default:
+ rc = -EINVAL;
+ }
+ if (rc)
+ RETURN(rc);
+ /* info->lti_ea_store could be reallocated in lod_layout_convert() */
+ cur_lcm = info->lti_ea_store;
cur_entry_count = le16_to_cpu(cur_lcm->lcm_entry_count);
/* 'lcm_mirror_count + 1' is the current # of mirrors the file has */
lcm->lcm_size = cpu_to_le32(size);
lcm->lcm_entry_count = cpu_to_le16(cur_entry_count + merge_entry_count);
lcm->lcm_mirror_count = cpu_to_le16(mirror_count);
- if ((le16_to_cpu(lcm->lcm_flags) & LCM_FL_FLR_MASK) == LCM_FL_NOT_FLR)
+ if ((le16_to_cpu(lcm->lcm_flags) & LCM_FL_FLR_MASK) == LCM_FL_NONE)
lcm->lcm_flags = cpu_to_le32(LCM_FL_RDONLY);
LASSERT(dt_write_locked(env, dt_object_child(dt)));
}
/**
+ * Split layouts, just set the LOVEA with the layout from mbuf.
+ */
+static int lod_declare_layout_split(const struct lu_env *env,
+ struct dt_object *dt, const struct lu_buf *mbuf,
+ struct thandle *th)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lov_comp_md_v1 *lcm = mbuf->lb_buf;
+ int rc;
+ ENTRY;
+
+ lod_obj_inc_layout_gen(lo);
+ lcm->lcm_layout_gen = cpu_to_le32(lo->ldo_layout_gen);
+
+ lod_object_free_striping(env, lo);
+ rc = lod_parse_striping(env, lo, mbuf);
+ if (rc)
+ RETURN(rc);
+
+ rc = lod_sub_declare_xattr_set(env, dt_object_child(dt), mbuf,
+ XATTR_NAME_LOV, LU_XATTR_REPLACE, th);
+ RETURN(rc);
+}
+
+/**
* Implementation of dt_object_operations::do_declare_xattr_set.
*
* \see dt_object_operations::do_declare_xattr_set() in the API description
mode = dt->do_lu.lo_header->loh_attr & S_IFMT;
if ((S_ISREG(mode) || mode == 0) &&
- !(fl & (LU_XATTR_REPLACE | LU_XATTR_MERGE)) &&
+ !(fl & (LU_XATTR_REPLACE | LU_XATTR_MERGE | LU_XATTR_SPLIT)) &&
(strcmp(name, XATTR_NAME_LOV) == 0 ||
strcmp(name, XATTR_LUSTRE_LOV) == 0)) {
/*
LASSERT(strcmp(name, XATTR_NAME_LOV) == 0 ||
strcmp(name, XATTR_LUSTRE_LOV) == 0);
rc = lod_declare_layout_merge(env, dt, buf, th);
+ } else if (fl & LU_XATTR_SPLIT) {
+ LASSERT(strcmp(name, XATTR_NAME_LOV) == 0 ||
+ strcmp(name, XATTR_LUSTRE_LOV) == 0);
+ rc = lod_declare_layout_split(env, dt, buf, th);
} else if (S_ISREG(mode) &&
strlen(name) > strlen(XATTR_LUSTRE_LOV) + 1 &&
strncmp(name, XATTR_LUSTRE_LOV,
* \param[in] env execution environment
* \param[in] dt object
* \param[in] attr attributes the stripes will be created with
+ * \param[in] lmu lmv_user_md if MDT indices are specified
* \param[in] dof format of stripes (see OSD API description)
* \param[in] th transaction handle
* \param[in] declare where to call "declare" or "execute" methods
static int lod_dir_striping_create_internal(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
+ const struct lu_buf *lmu,
struct dt_object_format *dof,
struct thandle *th,
bool declare)
if (!LMVEA_DELETE_VALUES(lo->ldo_dir_stripe_count,
lo->ldo_dir_stripe_offset)) {
- struct lmv_user_md_v1 *v1 = info->lti_ea_store;
- int stripe_count = lo->ldo_dir_stripe_count;
+ if (!lmu) {
+ struct lmv_user_md_v1 *v1 = info->lti_ea_store;
+ int stripe_count = lo->ldo_dir_stripe_count;
- if (info->lti_ea_store_size < sizeof(*v1)) {
- rc = lod_ea_store_resize(info, sizeof(*v1));
- if (rc != 0)
- RETURN(rc);
- v1 = info->lti_ea_store;
- }
+ if (info->lti_ea_store_size < sizeof(*v1)) {
+ rc = lod_ea_store_resize(info, sizeof(*v1));
+ if (rc != 0)
+ RETURN(rc);
+ v1 = info->lti_ea_store;
+ }
- memset(v1, 0, sizeof(*v1));
- v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
- v1->lum_stripe_count = cpu_to_le32(stripe_count);
- v1->lum_stripe_offset =
- cpu_to_le32(lo->ldo_dir_stripe_offset);
+ memset(v1, 0, sizeof(*v1));
+ v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
+ v1->lum_stripe_count = cpu_to_le32(stripe_count);
+ v1->lum_stripe_offset =
+ cpu_to_le32(lo->ldo_dir_stripe_offset);
- info->lti_buf.lb_buf = v1;
- info->lti_buf.lb_len = sizeof(*v1);
+ info->lti_buf.lb_buf = v1;
+ info->lti_buf.lb_len = sizeof(*v1);
+ lmu = &info->lti_buf;
+ }
if (declare)
- rc = lod_declare_xattr_set_lmv(env, dt, attr,
- &info->lti_buf, dof, th);
+ rc = lod_declare_xattr_set_lmv(env, dt, attr, lmu, dof,
+ th);
else
- rc = lod_xattr_set_lmv(env, dt, &info->lti_buf,
- XATTR_NAME_LMV, 0, th);
+ rc = lod_xattr_set_lmv(env, dt, lmu, XATTR_NAME_LMV, 0,
+ th);
if (rc != 0)
RETURN(rc);
}
static int lod_declare_dir_striping_create(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
+ struct lu_buf *lmu,
struct dt_object_format *dof,
struct thandle *th)
{
- return lod_dir_striping_create_internal(env, dt, attr, dof, th, true);
+ return lod_dir_striping_create_internal(env, dt, attr, lmu, dof, th,
+ true);
}
static int lod_dir_striping_create(const struct lu_env *env,
struct dt_object_format *dof,
struct thandle *th)
{
- return lod_dir_striping_create_internal(env, dt, attr, dof, th, false);
+ return lod_dir_striping_create_internal(env, dt, attr, NULL, dof, th,
+ false);
}
/**
return rc;
}
+
+static int lod_get_default_lov_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds);
/**
* Implementation of dt_object_operations::do_xattr_set.
*
if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
strcmp(name, XATTR_NAME_LOV) == 0) {
- /* default LOVEA */
- rc = lod_xattr_set_lov_on_dir(env, dt, buf, name, fl, th);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_default_striping *lds = &info->lti_def_striping;
+ struct lov_user_md_v1 *v1 = buf->lb_buf;
+ char pool[LOV_MAXPOOLNAME + 1];
+ bool is_del;
+
+ /* get existing striping config */
+ rc = lod_get_default_lov_striping(env, lod_dt_obj(dt), lds);
+ if (rc)
+ RETURN(rc);
+
+ memset(pool, 0, sizeof(pool));
+ if (lds->lds_def_striping_set == 1)
+ lod_layout_get_pool(lds->lds_def_comp_entries,
+ lds->lds_def_comp_cnt, pool,
+ sizeof(pool));
+
+ is_del = LOVEA_DELETE_VALUES(v1->lmm_stripe_size,
+ v1->lmm_stripe_count,
+ v1->lmm_stripe_offset,
+ NULL);
+
+ /* Retain the pool name if it is not given */
+ if (v1->lmm_magic == LOV_USER_MAGIC_V1 && pool[0] != '\0' &&
+ !is_del) {
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lov_user_md_v3 *v3 = info->lti_ea_store;
+
+ memset(v3, 0, sizeof(*v3));
+ v3->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V3);
+ v3->lmm_pattern = cpu_to_le32(v1->lmm_pattern);
+ v3->lmm_stripe_count =
+ cpu_to_le32(v1->lmm_stripe_count);
+ v3->lmm_stripe_offset =
+ cpu_to_le32(v1->lmm_stripe_offset);
+ v3->lmm_stripe_size = cpu_to_le32(v1->lmm_stripe_size);
+
+ strlcpy(v3->lmm_pool_name, pool,
+ sizeof(v3->lmm_pool_name));
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+ rc = lod_xattr_set_lov_on_dir(env, dt, &info->lti_buf,
+ name, fl, th);
+ } else {
+ rc = lod_xattr_set_lov_on_dir(env, dt, buf, name,
+ fl, th);
+ }
+
+ if (lds->lds_def_striping_set == 1 &&
+ lds->lds_def_comp_entries != NULL)
+ lod_free_def_comp_entries(lds);
+
RETURN(rc);
} else if (S_ISDIR(dt->do_lu.lo_header->loh_attr) &&
strcmp(name, XATTR_NAME_DEFAULT_LMV) == 0) {
return;
lo->ldo_is_composite = lds->lds_def_striping_is_composite;
+ if (lds->lds_def_mirror_cnt > 1)
+ lo->ldo_flr_state = LCM_FL_RDONLY;
for (i = 0; i < lo->ldo_comp_cnt; i++) {
struct lod_layout_component *obj_comp =
if (!lo->ldo_is_composite)
continue;
- if (obj_comp->llc_stripe_count <= 0 &&
- obj_comp->llc_pattern != LOV_PATTERN_MDT)
- obj_comp->llc_stripe_count =
- desc->ld_default_stripe_count;
- if (obj_comp->llc_stripe_size <= 0)
- obj_comp->llc_stripe_size =
- desc->ld_default_stripe_size;
+ lod_adjust_stripe_info(obj_comp, desc);
}
} else if (lds->lds_dir_def_striping_set && S_ISDIR(mode)) {
if (lo->ldo_dir_stripe_count == 0)
nextc->do_ops->do_ah_init(env, ah, nextp, nextc, child_mode);
if (S_ISDIR(child_mode)) {
+ const struct lmv_user_md_v1 *lum1 = ah->dah_eadata;
+
/* other default values are 0 */
lc->ldo_dir_stripe_offset = -1;
lc->ldo_def_striping = lds;
/* It should always honour the specified stripes */
+ /* Note: old client (< 2.7)might also do lfs mkdir, whose EA
+ * will have old magic. In this case, we should ignore the
+ * stripe count and try to create dir by default stripe.
+ */
if (ah->dah_eadata != NULL && ah->dah_eadata_len != 0 &&
- lod_verify_md_striping(d, ah->dah_eadata) == 0) {
- const struct lmv_user_md_v1 *lum1 = ah->dah_eadata;
-
+ (le32_to_cpu(lum1->lum_magic) == LMV_USER_MAGIC ||
+ le32_to_cpu(lum1->lum_magic) == LMV_USER_MAGIC_SPECIFIC)) {
lc->ldo_dir_stripe_count =
le32_to_cpu(lum1->lum_stripe_count);
lc->ldo_dir_stripe_offset =
LASSERT(!lc->ldo_is_composite);
lod_comp = &lc->ldo_comp_entries[0];
desc = &d->lod_desc;
- if (lod_comp->llc_stripe_count <= 0)
- lod_comp->llc_stripe_count =
- desc->ld_default_stripe_count;
- if (lod_comp->llc_stripe_size <= 0)
- lod_comp->llc_stripe_size =
- desc->ld_default_stripe_size;
+ lod_adjust_stripe_info(lod_comp, desc);
}
EXIT;
NULL, th);
} else if (dof->dof_type == DFT_DIR) {
struct seq_server_site *ss;
+ struct lu_buf buf = { NULL };
+ struct lu_buf *lmu = NULL;
ss = lu_site2seq(dt->do_lu.lo_dev->ld_site);
else
GOTO(out, rc = -EINVAL);
}
+ } else if (hint && hint->dah_eadata) {
+ lmu = &buf;
+ lmu->lb_buf = (void *)hint->dah_eadata;
+ lmu->lb_len = hint->dah_eadata_len;
}
- rc = lod_declare_dir_striping_create(env, dt, attr, dof, th);
+ rc = lod_declare_dir_striping_create(env, dt, attr, lmu, dof,
+ th);
}
out:
/* failed to create striping or to set initial size, let's reset
int i, rc;
ENTRY;
- LASSERT(lo->ldo_flr_state == LCM_FL_NOT_FLR);
+ LASSERT(lo->ldo_flr_state == LCM_FL_NONE);
/*
* In case the client is passing lovea, which only happens during
GOTO(out, rc);
}
- if (layout->li_opc == LAYOUT_INTENT_TRUNC) {
- /**
- * trunc transfers [size, eof) in the intent extent, while
- * we'd instantiated components covers [0, size).
- */
- layout->li_extent.e_end = layout->li_extent.e_start;
- layout->li_extent.e_start = 0;
- }
-
/* Make sure defined layout covers the requested write range. */
lod_comp = &lo->ldo_comp_entries[lo->ldo_comp_cnt - 1];
if (lo->ldo_comp_cnt > 1 &&
/* The writing extent decides which components in the primary
* are affected... */
+ CDEBUG(D_LAYOUT, "primary mirror %d, "DEXT"\n", primary, PEXT(extent));
lod_foreach_mirror_comp(pri_comp, lo, primary) {
if (!lu_extent_is_overlapped(extent, &pri_comp->llc_extent))
continue;
+ CDEBUG(D_LAYOUT, "primary comp %u "DEXT"\n",
+ lod_comp_index(lo, pri_comp),
+ PEXT(&pri_comp->llc_extent));
+
for (i = 0; i < lo->ldo_mirror_count; i++) {
if (i == primary)
continue;
}
}
-static int lod_declare_update_rdonly(const struct lu_env *env,
- struct lod_object *lo, struct md_layout_change *mlc,
- struct thandle *th)
+/**
+ * check an OST's availability
+ * \param[in] env execution environment
+ * \param[in] lo lod object
+ * \param[in] dt dt object
+ * \param[in] index mirror index
+ *
+ * \retval negative if failed
+ * \retval 1 if \a dt is available
+ * \retval 0 if \a dt is not available
+ */
+static inline int lod_check_ost_avail(const struct lu_env *env,
+ struct lod_object *lo,
+ struct dt_object *dt, int index)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lu_attr *layout_attr = &info->lti_layout_attr;
- struct lod_layout_component *lod_comp;
- struct layout_intent *layout = mlc->mlc_intent;
- struct lu_extent extent = layout->li_extent;
- unsigned int seq = 0;
- int picked;
- int i;
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ struct lod_tgt_desc *ost;
+ __u32 idx;
+ int type = LU_SEQ_RANGE_OST;
int rc;
- ENTRY;
- LASSERT(mlc->mlc_opc == MD_LAYOUT_WRITE);
- LASSERT(lo->ldo_flr_state == LCM_FL_RDONLY);
- LASSERT(lo->ldo_mirror_count > 0);
+ rc = lod_fld_lookup(env, lod, lu_object_fid(&dt->do_lu), &idx, &type);
+ if (rc < 0) {
+ CERROR("%s: can't locate "DFID":rc = %d\n",
+ lod2obd(lod)->obd_name, PFID(lu_object_fid(&dt->do_lu)),
+ rc);
+ return rc;
+ }
+
+ ost = OST_TGT(lod, idx);
+ if (ost->ltd_statfs.os_state &
+ (OS_STATE_READONLY | OS_STATE_ENOSPC | OS_STATE_ENOINO) ||
+ ost->ltd_active == 0) {
+ CDEBUG(D_LAYOUT, DFID ": mirror %d OST%d unavail, rc = %d\n",
+ PFID(lod_object_fid(lo)), index, idx, rc);
+ return 0;
+ }
+
+ return 1;
+}
- CDEBUG(D_LAYOUT, DFID": trying to write :"DEXT"\n",
- PFID(lod_object_fid(lo)), PEXT(&extent));
+/**
+ * Pick primary mirror for write
+ * \param[in] env execution environment
+ * \param[in] lo object
+ * \param[in] extent write range
+ */
+static int lod_primary_pick(const struct lu_env *env, struct lod_object *lo,
+ struct lu_extent *extent)
+{
+ struct lod_device *lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ unsigned int seq = 0;
+ struct lod_layout_component *lod_comp;
+ int i, j, rc;
+ int picked = -1, second_pick = -1, third_pick = -1;
+ ENTRY;
if (OBD_FAIL_CHECK(OBD_FAIL_FLR_RANDOM_PICK_MIRROR)) {
get_random_bytes(&seq, sizeof(seq));
}
/**
- * Pick a mirror as the primary.
- * Now it only picks the first mirror, this algo can be
- * revised later after knowing the topology of cluster or
- * the availability of OSTs.
+ * Pick a mirror as the primary, and check the availability of OSTs.
+ *
+ * This algo can be revised later after knowing the topology of
+ * cluster.
*/
- for (picked = -1, i = 0; i < lo->ldo_mirror_count; i++) {
+ lod_qos_statfs_update(env, lod);
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ bool ost_avail = true;
int index = (i + seq) % lo->ldo_mirror_count;
- if (!lo->ldo_mirrors[index].lme_stale) {
- picked = index;
- break;
+ if (lo->ldo_mirrors[index].lme_stale) {
+ CDEBUG(D_LAYOUT, DFID": mirror %d stale\n",
+ PFID(lod_object_fid(lo)), index);
+ continue;
}
- }
- if (picked < 0) /* failed to pick a primary */
- RETURN(-ENODATA);
- CDEBUG(D_LAYOUT, DFID": picked mirror %u as primary\n",
- PFID(lod_object_fid(lo)), lo->ldo_mirrors[picked].lme_id);
+ /* 2nd pick is for the primary mirror containing unavail OST */
+ if (lo->ldo_mirrors[index].lme_primary && second_pick < 0)
+ second_pick = index;
- /* stale overlapping components from other mirrors */
- lod_stale_components(lo, picked, &extent);
+ /* 3rd pick is for non-primary mirror containing unavail OST */
+ if (second_pick < 0 && third_pick < 0)
+ third_pick = index;
- /* instantiate components for the picked mirror, start from 0 */
- if (layout->li_opc == LAYOUT_INTENT_TRUNC) {
/**
- * trunc transfers [size, eof) in the intent extent, we'd
- * stale components overlapping [size, eof), while we'd
- * instantiated components covers [0, size).
+ * we found a non-primary 1st pick, we'd like to find a
+ * potential pirmary mirror.
*/
- extent.e_end = extent.e_start;
- }
- extent.e_start = 0;
+ if (picked >= 0 && !lo->ldo_mirrors[index].lme_primary)
+ continue;
- lod_foreach_mirror_comp(lod_comp, lo, picked) {
- if (!lu_extent_is_overlapped(&extent,
- &lod_comp->llc_extent))
+ /* check the availability of OSTs */
+ lod_foreach_mirror_comp(lod_comp, lo, index) {
+ if (!lod_comp_inited(lod_comp) || !lod_comp->llc_stripe)
+ continue;
+
+ for (j = 0; j < lod_comp->llc_stripe_count; j++) {
+ struct dt_object *dt = lod_comp->llc_stripe[j];
+
+ rc = lod_check_ost_avail(env, lo, dt, index);
+ if (rc < 0)
+ RETURN(rc);
+
+ ost_avail = !!rc;
+ if (!ost_avail)
+ break;
+ } /* for all dt object in one component */
+ if (!ost_avail)
+ break;
+ } /* for all components in a mirror */
+
+ /**
+ * the OSTs where allocated objects locates in the components
+ * of the mirror are available.
+ */
+ if (!ost_avail)
+ continue;
+
+ /* this mirror has all OSTs available */
+ picked = index;
+
+ /**
+ * primary with all OSTs are available, this is the perfect
+ * 1st pick.
+ */
+ if (lo->ldo_mirrors[index].lme_primary)
break;
+ } /* for all mirrors */
+
+ /* failed to pick a sound mirror, lower our expectation */
+ if (picked < 0)
+ picked = second_pick;
+ if (picked < 0)
+ picked = third_pick;
+ if (picked < 0)
+ RETURN(-ENODATA);
- if (lod_comp_inited(lod_comp))
+ RETURN(picked);
+}
+
+/**
+ * figure out the components should be instantiated for resync.
+ */
+static int lod_prepare_resync(const struct lu_env *env, struct lod_object *lo,
+ struct lu_extent *extent)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_layout_component *lod_comp;
+ unsigned int need_sync = 0;
+ int i;
+
+ CDEBUG(D_LAYOUT,
+ DFID": instantiate all stale components in "DEXT"\n",
+ PFID(lod_object_fid(lo)), PEXT(extent));
+
+ /**
+ * instantiate all components within this extent, even non-stale
+ * components.
+ */
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (!lo->ldo_mirrors[i].lme_stale)
continue;
- CDEBUG(D_LAYOUT, "instantiate: %u / %u\n",
- i, lod_comp_index(lo, lod_comp));
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (!lu_extent_is_overlapped(extent,
+ &lod_comp->llc_extent))
+ break;
- info->lti_comp_idx[info->lti_count++] =
- lod_comp_index(lo, lod_comp);
+ need_sync++;
+
+ if (lod_comp_inited(lod_comp))
+ continue;
+
+ CDEBUG(D_LAYOUT, "resync instantiate %d / %d\n",
+ i, lod_comp_index(lo, lod_comp));
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
+ }
}
- lo->ldo_flr_state = LCM_FL_WRITE_PENDING;
+ return need_sync ? 0 : -EALREADY;
+}
+
+static int lod_declare_update_rdonly(const struct lu_env *env,
+ struct lod_object *lo, struct md_layout_change *mlc,
+ struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_attr *layout_attr = &info->lti_layout_attr;
+ struct lod_layout_component *lod_comp;
+ struct lu_extent extent = { 0 };
+ int rc;
+ ENTRY;
+
+ LASSERT(lo->ldo_flr_state == LCM_FL_RDONLY);
+ LASSERT(mlc->mlc_opc == MD_LAYOUT_WRITE ||
+ mlc->mlc_opc == MD_LAYOUT_RESYNC);
+ LASSERT(lo->ldo_mirror_count > 0);
+
+ if (mlc->mlc_opc == MD_LAYOUT_WRITE) {
+ struct layout_intent *layout = mlc->mlc_intent;
+ int picked;
+
+ extent = layout->li_extent;
+ CDEBUG(D_LAYOUT, DFID": trying to write :"DEXT"\n",
+ PFID(lod_object_fid(lo)), PEXT(&extent));
+
+ picked = lod_primary_pick(env, lo, &extent);
+ if (picked < 0)
+ RETURN(picked);
+
+ CDEBUG(D_LAYOUT, DFID": picked mirror id %u as primary\n",
+ PFID(lod_object_fid(lo)),
+ lo->ldo_mirrors[picked].lme_id);
+
+ if (layout->li_opc == LAYOUT_INTENT_TRUNC) {
+ /**
+ * trunc transfers [0, size) in the intent extent, we'd
+ * stale components overlapping [size, eof).
+ */
+ extent.e_start = extent.e_end;
+ extent.e_end = OBD_OBJECT_EOF;
+ }
+
+ /* stale overlapping components from other mirrors */
+ lod_stale_components(lo, picked, &extent);
+
+ /* restore truncate intent extent */
+ if (layout->li_opc == LAYOUT_INTENT_TRUNC)
+ extent.e_end = extent.e_start;
+
+ /* instantiate components for the picked mirror, start from 0 */
+ extent.e_start = 0;
+
+ lod_foreach_mirror_comp(lod_comp, lo, picked) {
+ if (!lu_extent_is_overlapped(&extent,
+ &lod_comp->llc_extent))
+ break;
+
+ if (lod_comp_inited(lod_comp))
+ continue;
+
+ info->lti_comp_idx[info->lti_count++] =
+ lod_comp_index(lo, lod_comp);
+ }
+
+ lo->ldo_flr_state = LCM_FL_WRITE_PENDING;
+ } else { /* MD_LAYOUT_RESYNC */
+ int i;
+
+ /**
+ * could contain multiple non-stale mirrors, so we need to
+ * prep uninited all components assuming any non-stale mirror
+ * could be picked as the primary mirror.
+ */
+ for (i = 0; i < lo->ldo_mirror_count; i++) {
+ if (lo->ldo_mirrors[i].lme_stale)
+ continue;
+
+ lod_foreach_mirror_comp(lod_comp, lo, i) {
+ if (!lod_comp_inited(lod_comp))
+ break;
+
+ if (extent.e_end < lod_comp->llc_extent.e_end)
+ extent.e_end =
+ lod_comp->llc_extent.e_end;
+ }
+ }
+
+ rc = lod_prepare_resync(env, lo, &extent);
+ if (rc)
+ GOTO(out, rc);
+ /* change the file state to SYNC_PENDING */
+ lo->ldo_flr_state = LCM_FL_SYNC_PENDING;
+ }
/* Reset the layout version once it's becoming too large.
* This way it can make sure that the layout version is
layout_attr->la_valid = LA_LAYOUT_VERSION;
layout_attr->la_layout_version = 0; /* set current version */
+ if (mlc->mlc_opc == MD_LAYOUT_RESYNC)
+ layout_attr->la_layout_version = LU_LAYOUT_RESYNC;
rc = lod_declare_attr_set(env, &lo->ldo_obj, layout_attr, th);
if (rc)
GOTO(out, rc);
CDEBUG(D_LAYOUT, DFID": intent to write: "DEXT"\n",
PFID(lod_object_fid(lo)), PEXT(&extent));
+ if (mlc->mlc_intent->li_opc == LAYOUT_INTENT_TRUNC) {
+ /**
+ * trunc transfers [0, size) in the intent extent, we'd
+ * stale components overlapping [size, eof).
+ */
+ extent.e_start = extent.e_end;
+ extent.e_end = OBD_OBJECT_EOF;
+ }
/* 1. stale overlapping components */
lod_stale_components(lo, primary, &extent);
/* 2. find out the components need instantiating.
* instantiate [0, mlc->mlc_intent->e_end) */
- if (mlc->mlc_intent->li_opc == LAYOUT_INTENT_TRUNC) {
- /**
- * trunc transfers [size, eof) in the intent extent,
- * we'd stale components overlapping [size, eof),
- * while we'd instantiated components covers [0, size).
- */
+
+ /* restore truncate intent extent */
+ if (mlc->mlc_intent->li_opc == LAYOUT_INTENT_TRUNC)
extent.e_end = extent.e_start;
- }
extent.e_start = 0;
lod_foreach_mirror_comp(lod_comp, lo, primary) {
lod_comp_index(lo, lod_comp);
}
} else { /* MD_LAYOUT_RESYNC */
- /* figure out the components that have been instantiated in
- * in primary to decide what components should be instantiated
- * in stale mirrors */
lod_foreach_mirror_comp(lod_comp, lo, primary) {
if (!lod_comp_inited(lod_comp))
break;
extent.e_end = lod_comp->llc_extent.e_end;
}
- CDEBUG(D_LAYOUT,
- DFID": instantiate all stale components in "DEXT"\n",
- PFID(lod_object_fid(lo)), PEXT(&extent));
-
- /* 1. instantiate all components within this extent, even
- * non-stale components so that it won't need to instantiate
- * those components for mirror truncate later. */
- for (i = 0; i < lo->ldo_mirror_count; i++) {
- if (primary == i)
- continue;
-
- LASSERTF(lo->ldo_mirrors[i].lme_stale,
- "both %d and %d are primary\n", i, primary);
-
- lod_foreach_mirror_comp(lod_comp, lo, i) {
- if (!lu_extent_is_overlapped(&extent,
- &lod_comp->llc_extent))
- break;
-
- if (lod_comp_inited(lod_comp))
- continue;
-
- CDEBUG(D_LAYOUT, "resync instantiate %d / %d\n",
- i, lod_comp_index(lo, lod_comp));
-
- info->lti_comp_idx[info->lti_count++] =
- lod_comp_index(lo, lod_comp);
- }
- }
-
+ rc = lod_prepare_resync(env, lo, &extent);
+ if (rc)
+ GOTO(out, rc);
/* change the file state to SYNC_PENDING */
lo->ldo_flr_state = LCM_FL_SYNC_PENDING;
}
GOTO(out, rc = -EINVAL);
}
- if (!sync_components || !resync_components) {
- CDEBUG(D_LAYOUT, DFID": no mirror in sync or resync\n",
+ if (!sync_components || (mlc->mlc_resync_count && !resync_components)) {
+ CDEBUG(D_LAYOUT, DFID": no mirror in sync\n",
PFID(lod_object_fid(lo)));
/* tend to return an error code here to prevent
GOTO(out, rc);
switch (lo->ldo_flr_state) {
- case LCM_FL_NOT_FLR:
+ case LCM_FL_NONE:
rc = lod_declare_update_plain(env, lo, mlc->mlc_intent,
&mlc->mlc_buf, th);
break;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff