* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_LOV
-#ifdef __KERNEL__
-#include <asm/div64.h>
+#include <linux/math64.h>
#include <libcfs/libcfs.h>
-#else
-#include <liblustre.h>
-#endif
#include <obd_class.h>
-#include <obd_lov.h>
#include <lustre/lustre_idl.h>
#include "lov_internal.h"
-struct lovea_unpack_args {
- struct lov_stripe_md *lsm;
- int cursor;
-};
-
static int lsm_lmm_verify_common(struct lov_mds_md *lmm, int lmm_bytes,
__u16 stripe_count)
{
+ if (stripe_count > LOV_V1_INSANE_STRIPE_COUNT) {
+ CERROR("bad stripe count %d\n", stripe_count);
+ lov_dump_lmm_common(D_WARNING, lmm);
+ return -EINVAL;
+ }
- if (stripe_count == 0 || stripe_count > LOV_V1_INSANE_STRIPE_COUNT) {
- CERROR("bad stripe count %d\n", stripe_count);
- lov_dump_lmm(D_WARNING, lmm);
- return -EINVAL;
- }
-
- if (ostid_id(&lmm->lmm_oi) == 0) {
+ if (lmm_oi_id(&lmm->lmm_oi) == 0) {
CERROR("zero object id\n");
- lov_dump_lmm(D_WARNING, lmm);
+ lov_dump_lmm_common(D_WARNING, lmm);
return -EINVAL;
}
- if (lmm->lmm_pattern != cpu_to_le32(LOV_PATTERN_RAID0)) {
- CERROR("bad striping pattern\n");
- lov_dump_lmm(D_WARNING, lmm);
- return -EINVAL;
- }
+ if (lov_pattern(le32_to_cpu(lmm->lmm_pattern)) != LOV_PATTERN_RAID0) {
+ CERROR("bad striping pattern\n");
+ lov_dump_lmm_common(D_WARNING, lmm);
+ return -EINVAL;
+ }
- if (lmm->lmm_stripe_size == 0 ||
- (le32_to_cpu(lmm->lmm_stripe_size)&(LOV_MIN_STRIPE_SIZE-1)) != 0) {
- CERROR("bad stripe size %u\n",
- le32_to_cpu(lmm->lmm_stripe_size));
- lov_dump_lmm(D_WARNING, lmm);
- return -EINVAL;
- }
- return 0;
+ if (lmm->lmm_stripe_size == 0 ||
+ (le32_to_cpu(lmm->lmm_stripe_size)&(LOV_MIN_STRIPE_SIZE-1)) != 0) {
+ CERROR("bad stripe size %u\n",
+ le32_to_cpu(lmm->lmm_stripe_size));
+ lov_dump_lmm_common(D_WARNING, lmm);
+ return -EINVAL;
+ }
+ return 0;
}
struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size)
{
- struct lov_stripe_md *lsm;
- struct lov_oinfo *loi;
- int i, oinfo_ptrs_size;
+ struct lov_stripe_md *lsm;
+ struct lov_oinfo *loi;
+ int i, oinfo_ptrs_size;
- LASSERT(stripe_count <= LOV_MAX_STRIPE_COUNT);
+ LASSERT(stripe_count <= LOV_MAX_STRIPE_COUNT);
- oinfo_ptrs_size = sizeof(struct lov_oinfo *) * stripe_count;
- *size = sizeof(struct lov_stripe_md) + oinfo_ptrs_size;
+ oinfo_ptrs_size = sizeof(struct lov_oinfo *) * stripe_count;
+ *size = sizeof(struct lov_stripe_md) + oinfo_ptrs_size;
- OBD_ALLOC_LARGE(lsm, *size);
- if (!lsm)
- return NULL;;
+ OBD_ALLOC_LARGE(lsm, *size);
+ if (!lsm)
+ return NULL;
- for (i = 0; i < stripe_count; i++) {
- OBD_SLAB_ALLOC_PTR_GFP(loi, lov_oinfo_slab, CFS_ALLOC_IO);
- if (loi == NULL)
- goto err;
- lsm->lsm_oinfo[i] = loi;
- }
- lsm->lsm_stripe_count = stripe_count;
- return lsm;
+ for (i = 0; i < stripe_count; i++) {
+ OBD_SLAB_ALLOC_PTR_GFP(loi, lov_oinfo_slab, GFP_NOFS);
+ if (loi == NULL)
+ goto err;
+ lsm->lsm_oinfo[i] = loi;
+ }
+ lsm->lsm_stripe_count = stripe_count;
+ return lsm;
err:
- while (--i >= 0)
- OBD_SLAB_FREE(lsm->lsm_oinfo[i], lov_oinfo_slab, sizeof(*loi));
- OBD_FREE_LARGE(lsm, *size);
- return NULL;
+ while (--i >= 0)
+ OBD_SLAB_FREE(lsm->lsm_oinfo[i], lov_oinfo_slab, sizeof(*loi));
+ OBD_FREE_LARGE(lsm, *size);
+ return NULL;
}
void lsm_free_plain(struct lov_stripe_md *lsm)
* This supposes lov_mds_md_v1/v3 first fields are
* are the same
*/
- ostid_le_to_cpu(&lmm->lmm_oi, &lsm->lsm_oi);
+ lmm_oi_le_to_cpu(&lsm->lsm_oi, &lmm->lmm_oi);
lsm->lsm_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
lsm->lsm_pattern = le32_to_cpu(lmm->lmm_pattern);
lsm->lsm_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
*swidth = (obd_off)lsm->lsm_stripe_size * lsm->lsm_stripe_count;
}
-static int lsm_destroy_plain(struct lov_stripe_md *lsm, struct obdo *oa,
- struct obd_export *md_exp)
-{
- return 0;
-}
-
/* Find minimum stripe maxbytes value. For inactive or
- * reconnecting targets use LUSTRE_STRIPE_MAXBYTES. */
+ * reconnecting targets use LUSTRE_EXT3_STRIPE_MAXBYTES. */
static void lov_tgt_maxbytes(struct lov_tgt_desc *tgt, __u64 *stripe_maxbytes)
{
struct obd_import *imp = tgt->ltd_obd->u.cli.cl_import;
if (imp == NULL || !tgt->ltd_active) {
- *stripe_maxbytes = LUSTRE_STRIPE_MAXBYTES;
+ *stripe_maxbytes = LUSTRE_EXT3_STRIPE_MAXBYTES;
return;
}
if (*stripe_maxbytes > imp->imp_connect_data.ocd_maxbytes)
*stripe_maxbytes = imp->imp_connect_data.ocd_maxbytes;
} else {
- *stripe_maxbytes = LUSTRE_STRIPE_MAXBYTES;
+ *stripe_maxbytes = LUSTRE_EXT3_STRIPE_MAXBYTES;
}
spin_unlock(&imp->imp_lock);
}
static int lsm_lmm_verify_v1(struct lov_mds_md_v1 *lmm, int lmm_bytes,
__u16 *stripe_count)
{
- if (lmm_bytes < sizeof(*lmm)) {
- CERROR("lov_mds_md_v1 too small: %d, need at least %d\n",
- lmm_bytes, (int)sizeof(*lmm));
- return -EINVAL;
- }
+ if (lmm_bytes < sizeof(*lmm)) {
+ CERROR("lov_mds_md_v1 too small: %d, need at least %d\n",
+ lmm_bytes, (int)sizeof(*lmm));
+ return -EINVAL;
+ }
- *stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
+ *stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
+ if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_RELEASED)
+ *stripe_count = 0;
- if (lmm_bytes < lov_mds_md_size(*stripe_count, LOV_MAGIC_V1)) {
- CERROR("LOV EA V1 too small: %d, need %d\n",
- lmm_bytes, lov_mds_md_size(*stripe_count, LOV_MAGIC_V1));
- lov_dump_lmm_v1(D_WARNING, lmm);
- return -EINVAL;
- }
+ if (lmm_bytes < lov_mds_md_size(*stripe_count, LOV_MAGIC_V1)) {
+ CERROR("LOV EA V1 too small: %d, need %d\n",
+ lmm_bytes, lov_mds_md_size(*stripe_count, LOV_MAGIC_V1));
+ lov_dump_lmm_common(D_WARNING, lmm);
+ return -EINVAL;
+ }
- return lsm_lmm_verify_common(lmm, lmm_bytes, *stripe_count);
+ return lsm_lmm_verify_common(lmm, lmm_bytes, *stripe_count);
}
-int lsm_unpackmd_v1(struct lov_obd *lov, struct lov_stripe_md *lsm,
- struct lov_mds_md_v1 *lmm)
+static int lsm_unpackmd_v1(struct lov_obd *lov, struct lov_stripe_md *lsm,
+ struct lov_mds_md_v1 *lmm)
{
struct lov_oinfo *loi;
int i;
+ int stripe_count;
__u64 stripe_maxbytes = OBD_OBJECT_EOF;
lsm_unpackmd_common(lsm, lmm);
- for (i = 0; i < lsm->lsm_stripe_count; i++) {
+ stripe_count = lsm_is_released(lsm) ? 0 : lsm->lsm_stripe_count;
+
+ for (i = 0; i < stripe_count; i++) {
/* XXX LOV STACKING call down to osc_unpackmd() */
loi = lsm->lsm_oinfo[i];
ostid_le_to_cpu(&lmm->lmm_objects[i].l_ost_oi, &loi->loi_oi);
loi->loi_ost_idx = le32_to_cpu(lmm->lmm_objects[i].l_ost_idx);
loi->loi_ost_gen = le32_to_cpu(lmm->lmm_objects[i].l_ost_gen);
+ if (lov_oinfo_is_dummy(loi))
+ continue;
+
if (loi->loi_ost_idx >= lov->desc.ld_tgt_count) {
CERROR("OST index %d more than OST count %d\n",
loi->loi_ost_idx, lov->desc.ld_tgt_count);
&stripe_maxbytes);
}
- lsm->lsm_maxbytes = stripe_maxbytes * lsm->lsm_stripe_count;
+ lsm->lsm_maxbytes = stripe_maxbytes * lsm->lsm_stripe_count;
+ if (lsm->lsm_stripe_count == 0)
+ lsm->lsm_maxbytes = stripe_maxbytes * lov->desc.ld_tgt_count;
- return 0;
+ return 0;
}
const struct lsm_operations lsm_v1_ops = {
.lsm_free = lsm_free_plain,
- .lsm_destroy = lsm_destroy_plain,
.lsm_stripe_by_index = lsm_stripe_by_index_plain,
.lsm_stripe_by_offset = lsm_stripe_by_offset_plain,
.lsm_lmm_verify = lsm_lmm_verify_v1,
static int lsm_lmm_verify_v3(struct lov_mds_md *lmmv1, int lmm_bytes,
__u16 *stripe_count)
{
- struct lov_mds_md_v3 *lmm;
+ struct lov_mds_md_v3 *lmm;
- lmm = (struct lov_mds_md_v3 *)lmmv1;
+ lmm = (struct lov_mds_md_v3 *)lmmv1;
- if (lmm_bytes < sizeof(*lmm)) {
- CERROR("lov_mds_md_v3 too small: %d, need at least %d\n",
- lmm_bytes, (int)sizeof(*lmm));
- return -EINVAL;
- }
+ if (lmm_bytes < sizeof(*lmm)) {
+ CERROR("lov_mds_md_v3 too small: %d, need at least %d\n",
+ lmm_bytes, (int)sizeof(*lmm));
+ return -EINVAL;
+ }
- *stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
+ *stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
+ if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_RELEASED)
+ *stripe_count = 0;
- if (lmm_bytes < lov_mds_md_size(*stripe_count, LOV_MAGIC_V3)) {
- CERROR("LOV EA V3 too small: %d, need %d\n",
- lmm_bytes, lov_mds_md_size(*stripe_count, LOV_MAGIC_V3));
- lov_dump_lmm_v3(D_WARNING, lmm);
- return -EINVAL;
- }
+ if (lmm_bytes < lov_mds_md_size(*stripe_count, LOV_MAGIC_V3)) {
+ CERROR("LOV EA V3 too small: %d, need %d\n",
+ lmm_bytes, lov_mds_md_size(*stripe_count, LOV_MAGIC_V3));
+ lov_dump_lmm_common(D_WARNING, lmm);
+ return -EINVAL;
+ }
- return lsm_lmm_verify_common((struct lov_mds_md_v1 *)lmm, lmm_bytes,
- *stripe_count);
+ return lsm_lmm_verify_common((struct lov_mds_md_v1 *)lmm, lmm_bytes,
+ *stripe_count);
}
-int lsm_unpackmd_v3(struct lov_obd *lov, struct lov_stripe_md *lsm,
- struct lov_mds_md *lmmv1)
+static int lsm_unpackmd_v3(struct lov_obd *lov, struct lov_stripe_md *lsm,
+ struct lov_mds_md *lmmv1)
{
struct lov_mds_md_v3 *lmm;
struct lov_oinfo *loi;
int i;
+ int stripe_count;
__u64 stripe_maxbytes = OBD_OBJECT_EOF;
int cplen = 0;
lmm = (struct lov_mds_md_v3 *)lmmv1;
lsm_unpackmd_common(lsm, (struct lov_mds_md_v1 *)lmm);
+
+ stripe_count = lsm_is_released(lsm) ? 0 : lsm->lsm_stripe_count;
+
cplen = strlcpy(lsm->lsm_pool_name, lmm->lmm_pool_name,
sizeof(lsm->lsm_pool_name));
if (cplen >= sizeof(lsm->lsm_pool_name))
return -E2BIG;
- for (i = 0; i < lsm->lsm_stripe_count; i++) {
- /* XXX LOV STACKING call down to osc_unpackmd() */
- loi = lsm->lsm_oinfo[i];
+ for (i = 0; i < stripe_count; i++) {
+ /* XXX LOV STACKING call down to osc_unpackmd() */
+ loi = lsm->lsm_oinfo[i];
ostid_le_to_cpu(&lmm->lmm_objects[i].l_ost_oi, &loi->loi_oi);
- loi->loi_ost_idx = le32_to_cpu(lmm->lmm_objects[i].l_ost_idx);
- loi->loi_ost_gen = le32_to_cpu(lmm->lmm_objects[i].l_ost_gen);
+ loi->loi_ost_idx = le32_to_cpu(lmm->lmm_objects[i].l_ost_idx);
+ loi->loi_ost_gen = le32_to_cpu(lmm->lmm_objects[i].l_ost_gen);
+ if (lov_oinfo_is_dummy(loi))
+ continue;
+
if (loi->loi_ost_idx >= lov->desc.ld_tgt_count) {
CERROR("OST index %d more than OST count %d\n",
loi->loi_ost_idx, lov->desc.ld_tgt_count);
&stripe_maxbytes);
}
- lsm->lsm_maxbytes = stripe_maxbytes * lsm->lsm_stripe_count;
+ lsm->lsm_maxbytes = stripe_maxbytes * lsm->lsm_stripe_count;
+ if (lsm->lsm_stripe_count == 0)
+ lsm->lsm_maxbytes = stripe_maxbytes * lov->desc.ld_tgt_count;
- return 0;
+ return 0;
}
const struct lsm_operations lsm_v3_ops = {
.lsm_free = lsm_free_plain,
- .lsm_destroy = lsm_destroy_plain,
.lsm_stripe_by_index = lsm_stripe_by_index_plain,
.lsm_stripe_by_offset = lsm_stripe_by_offset_plain,
.lsm_lmm_verify = lsm_lmm_verify_v3,
.lsm_unpackmd = lsm_unpackmd_v3,
};
+void dump_lsm(unsigned int level, const struct lov_stripe_md *lsm)
+{
+ CDEBUG(level, "lsm %p, objid "DOSTID", maxbytes "LPX64", magic 0x%08X,"
+ " stripe_size %u, stripe_count %u, refc: %d,"
+ " layout_gen %u, pool ["LOV_POOLNAMEF"]\n", lsm,
+ POSTID(&lsm->lsm_oi), lsm->lsm_maxbytes, lsm->lsm_magic,
+ lsm->lsm_stripe_size, lsm->lsm_stripe_count,
+ atomic_read(&lsm->lsm_refc), lsm->lsm_layout_gen,
+ lsm->lsm_pool_name);
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff