return -EINVAL;
}
-static int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
- struct lov_stripe_md *lsm)
+static int lmv_pack_md_v1(const struct lmv_stripe_md *lsm,
+ struct lmv_mds_md_v1 *lmm1)
{
- struct obd_device *obd = class_exp2obd(exp);
- struct lmv_obd *lmv = &obd->u.lmv;
- struct lmv_stripe_md *meap;
- struct lmv_stripe_md *lsmp;
- int mea_size;
- int i;
+ int cplen;
+ int i;
+
+ lmm1->lmv_magic = cpu_to_le32(lsm->lsm_md_magic);
+ lmm1->lmv_stripe_count = cpu_to_le32(lsm->lsm_md_stripe_count);
+ lmm1->lmv_master_mdt_index = cpu_to_le32(lsm->lsm_md_master_mdt_index);
+ lmm1->lmv_hash_type = cpu_to_le32(lsm->lsm_md_hash_type);
+ cplen = strlcpy(lmm1->lmv_pool_name, lsm->lsm_md_pool_name,
+ sizeof(lmm1->lmv_pool_name));
+ if (cplen >= sizeof(lmm1->lmv_pool_name))
+ return -E2BIG;
+
+ for (i = 0; i < lsm->lsm_md_stripe_count; i++)
+ fid_cpu_to_le(&lmm1->lmv_stripe_fids[i],
+ &lsm->lsm_md_oinfo[i].lmo_fid);
+ return 0;
+}
+
+int lmv_pack_md(union lmv_mds_md **lmmp, const struct lmv_stripe_md *lsm,
+ int stripe_count)
+{
+ int lmm_size = 0, rc = 0;
+ bool allocated = false;
- mea_size = lmv_get_easize(lmv);
- if (!lmmp)
- return mea_size;
+ LASSERT(lmmp);
+ /* Free lmm */
if (*lmmp && !lsm) {
+ int stripe_cnt;
+
+ stripe_cnt = lmv_mds_md_stripe_count_get(*lmmp);
+ lmm_size = lmv_mds_md_size(stripe_cnt,
+ le32_to_cpu((*lmmp)->lmv_magic));
+ if (!lmm_size)
+ return -EINVAL;
kvfree(*lmmp);
*lmmp = NULL;
return 0;
}
+ /* Alloc lmm */
+ if (!*lmmp && !lsm) {
+ lmm_size = lmv_mds_md_size(stripe_count, LMV_MAGIC);
+ LASSERT(lmm_size > 0);
+ *lmmp = libcfs_kvzalloc(lmm_size, GFP_NOFS);
+ if (!*lmmp)
+ return -ENOMEM;
+ lmv_mds_md_stripe_count_set(*lmmp, stripe_count);
+ (*lmmp)->lmv_magic = cpu_to_le32(LMV_MAGIC);
+ return lmm_size;
+ }
+
+ /* pack lmm */
+ LASSERT(lsm);
+ lmm_size = lmv_mds_md_size(lsm->lsm_md_stripe_count,
+ lsm->lsm_md_magic);
if (!*lmmp) {
- *lmmp = libcfs_kvzalloc(mea_size, GFP_NOFS);
+ *lmmp = libcfs_kvzalloc(lmm_size, GFP_NOFS);
if (!*lmmp)
return -ENOMEM;
+ allocated = true;
}
- if (!lsm)
- return mea_size;
+ switch (lsm->lsm_md_magic) {
+ case LMV_MAGIC_V1:
+ rc = lmv_pack_md_v1(lsm, &(*lmmp)->lmv_md_v1);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
- lsmp = (struct lmv_stripe_md *)lsm;
- meap = (struct lmv_stripe_md *)*lmmp;
+ if (rc && allocated) {
+ kvfree(*lmmp);
+ *lmmp = NULL;
+ }
- if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR &&
- lsmp->mea_magic != MEA_MAGIC_ALL_CHARS)
- return -EINVAL;
+ return lmm_size;
+}
+EXPORT_SYMBOL(lmv_pack_md);
- meap->mea_magic = cpu_to_le32(lsmp->mea_magic);
- meap->mea_count = cpu_to_le32(lsmp->mea_count);
- meap->mea_master = cpu_to_le32(lsmp->mea_master);
+static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
+ const struct lmv_mds_md_v1 *lmm1)
+{
+ struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
+ int stripe_count;
+ int rc = 0;
+ int cplen;
+ int i;
- for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
- meap->mea_ids[i] = lsmp->mea_ids[i];
- fid_cpu_to_le(&meap->mea_ids[i], &lsmp->mea_ids[i]);
+ lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
+ lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
+ lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
+ lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
+ lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
+ cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name,
+ sizeof(lsm->lsm_md_pool_name));
+
+ if (cplen >= sizeof(lsm->lsm_md_pool_name))
+ return -E2BIG;
+
+ CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %d layout_version %d\n",
+ lsm->lsm_md_stripe_count, lsm->lsm_md_master_mdt_index,
+ lsm->lsm_md_hash_type, lsm->lsm_md_layout_version);
+
+ stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
+ for (i = 0; i < le32_to_cpu(stripe_count); i++) {
+ fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
+ &lmm1->lmv_stripe_fids[i]);
+ rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
+ &lsm->lsm_md_oinfo[i].lmo_mds);
+ if (rc)
+ return rc;
+ CDEBUG(D_INFO, "unpack fid #%d "DFID"\n", i,
+ PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
}
- return mea_size;
+ return rc;
}
-static int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
- struct lov_mds_md *lmm, int lmm_size)
+int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp,
+ const union lmv_mds_md *lmm, int stripe_count)
{
- struct obd_device *obd = class_exp2obd(exp);
- struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp;
- struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm;
- struct lmv_obd *lmv = &obd->u.lmv;
- int mea_size;
- int i;
- __u32 magic;
+ struct lmv_stripe_md *lsm;
+ bool allocated = false;
+ int lsm_size, rc;
+
+ LASSERT(lsmp);
+
+ lsm = *lsmp;
+ /* Free memmd */
+ if (lsm && !lmm) {
+ int i;
- mea_size = lmv_get_easize(lmv);
- if (!lsmp)
- return mea_size;
+ for (i = 1; i < lsm->lsm_md_stripe_count; i++) {
+ if (lsm->lsm_md_oinfo[i].lmo_root)
+ iput(lsm->lsm_md_oinfo[i].lmo_root);
+ }
- if (*lsmp && !lmm) {
- kvfree(*tmea);
+ kvfree(lsm);
*lsmp = NULL;
return 0;
}
- LASSERT(mea_size == lmm_size);
+ /* Alloc memmd */
+ if (!lsm && !lmm) {
+ lsm_size = lmv_stripe_md_size(stripe_count);
+ lsm = libcfs_kvzalloc(lsm_size, GFP_NOFS);
+ if (!lsm)
+ return -ENOMEM;
+ lsm->lsm_md_stripe_count = stripe_count;
+ *lsmp = lsm;
+ return 0;
+ }
- *tmea = libcfs_kvzalloc(mea_size, GFP_NOFS);
- if (!*tmea)
- return -ENOMEM;
+ /* Unpack memmd */
+ if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1) {
+ CERROR("%s: invalid magic %x.\n", exp->exp_obd->obd_name,
+ le32_to_cpu(lmm->lmv_magic));
+ return -EINVAL;
+ }
- if (!lmm)
- return mea_size;
+ lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
+ if (!lsm) {
+ lsm = libcfs_kvzalloc(lsm_size, GFP_NOFS);
+ if (!lsm)
+ return -ENOMEM;
+ allocated = true;
+ *lsmp = lsm;
+ }
- if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
- mea->mea_magic == MEA_MAGIC_ALL_CHARS ||
- mea->mea_magic == MEA_MAGIC_HASH_SEGMENT) {
- magic = le32_to_cpu(mea->mea_magic);
- } else {
- /*
- * Old mea is not handled here.
- */
- CERROR("Old not supportable EA is found\n");
- LBUG();
+ switch (le32_to_cpu(lmm->lmv_magic)) {
+ case LMV_MAGIC_V1:
+ rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1);
+ break;
+ default:
+ CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name,
+ le32_to_cpu(lmm->lmv_magic));
+ rc = -EINVAL;
+ break;
}
- (*tmea)->mea_magic = magic;
- (*tmea)->mea_count = le32_to_cpu(mea->mea_count);
- (*tmea)->mea_master = le32_to_cpu(mea->mea_master);
+ if (rc && allocated) {
+ kvfree(lsm);
+ *lsmp = NULL;
+ lsm_size = rc;
+ }
+ return lsm_size;
+}
- for (i = 0; i < (*tmea)->mea_count; i++) {
- (*tmea)->mea_ids[i] = mea->mea_ids[i];
- fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]);
+int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
+ struct lov_mds_md *lmm, int disk_len)
+{
+ return lmv_unpack_md(exp, (struct lmv_stripe_md **)lsmp,
+ (union lmv_mds_md *)lmm, disk_len);
+}
+
+int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
+ struct lov_stripe_md *lsm)
+{
+ const struct lmv_stripe_md *lmv = (struct lmv_stripe_md *)lsm;
+ struct obd_device *obd = exp->exp_obd;
+ struct lmv_obd *lmv_obd = &obd->u.lmv;
+ int stripe_count;
+
+ if (!lmmp) {
+ if (lsm)
+ stripe_count = lmv->lsm_md_stripe_count;
+ else
+ stripe_count = lmv_obd->desc.ld_tgt_count;
+
+ return lmv_mds_md_size(stripe_count, LMV_MAGIC_V1);
}
- return mea_size;
+
+ return lmv_pack_md((union lmv_mds_md **)lmmp, lmv, 0);
}
static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
projects / karo-tx-linux.git / commitdiff