return;
}
+ if (BP_IS_EMBEDDED(bp)) {
+ (void) sprintf(blkbuf,
+ "EMBEDDED et=%u %llxL/%llxP B=%llu",
+ (int)BPE_GET_ETYPE(bp),
+ (u_longlong_t)BPE_GET_LSIZE(bp),
+ (u_longlong_t)BPE_GET_PSIZE(bp),
+ (u_longlong_t)bp->blk_birth);
+ return;
+ }
+
blkbuf[0] = '\0';
for (i = 0; i < ndvas; i++)
"%llxL/%llxP F=%llu B=%llu/%llu",
(u_longlong_t)BP_GET_LSIZE(bp),
(u_longlong_t)BP_GET_PSIZE(bp),
- (u_longlong_t)bp->blk_fill,
+ (u_longlong_t)BP_GET_FILL(bp),
(u_longlong_t)bp->blk_birth,
(u_longlong_t)BP_PHYSICAL_BIRTH(bp));
}
char blkbuf[BP_SPRINTF_LEN];
int l;
- ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
- ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
+ if (!BP_IS_EMBEDDED(bp)) {
+ ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
+ ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
+ }
(void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
err = visit_indirect(spa, dnp, cbp, &czb);
if (err)
break;
- fill += cbp->blk_fill;
+ fill += BP_GET_FILL(cbp);
}
if (!err)
- ASSERT3U(fill, ==, bp->blk_fill);
+ ASSERT3U(fill, ==, BP_GET_FILL(bp));
(void) arc_buf_remove_ref(buf, &buf);
}
if (dds.dds_type == DMU_OST_META) {
dds.dds_creation_txg = TXG_INITIAL;
- usedobjs = os->os_rootbp->blk_fill;
+ usedobjs = BP_GET_FILL(os->os_rootbp);
refdbytes = os->os_spa->spa_dsl_pool->
dp_mos_dir->dd_phys->dd_used_bytes;
} else {
dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
}
- ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
+ ASSERT3U(usedobjs, ==, BP_GET_FILL(os->os_rootbp));
zdb_nicenum(refdbytes, numbuf);
zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
uint64_t zcb_dedup_asize;
uint64_t zcb_dedup_blocks;
+ uint64_t zcb_embedded_blocks[NUM_BP_EMBEDDED_TYPES];
+ uint64_t zcb_embedded_histogram[NUM_BP_EMBEDDED_TYPES]
+ [BPE_PAYLOAD_SIZE];
uint64_t zcb_start;
uint64_t zcb_lastprint;
uint64_t zcb_totalasize;
zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++;
}
+ if (BP_IS_EMBEDDED(bp)) {
+ zcb->zcb_embedded_blocks[BPE_GET_ETYPE(bp)]++;
+ zcb->zcb_embedded_histogram[BPE_GET_ETYPE(bp)]
+ [BPE_GET_PSIZE(bp)]++;
+ return;
+ }
+
if (dump_opt['L'])
return;
is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
- if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
+ if (!BP_IS_EMBEDDED(bp) &&
+ (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata))) {
size_t size = BP_GET_PSIZE(bp);
void *data = zio_data_buf_alloc(size);
int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
zdb_blkstats_t *zb, *tzb;
uint64_t norm_alloc, norm_space, total_alloc, total_found;
int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
- int leaks = 0;
+ boolean_t leaks = B_FALSE;
int e;
+ bp_embedded_type_t i;
(void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
(dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
(u_longlong_t)total_alloc,
(dump_opt['L']) ? "unreachable" : "leaked",
(longlong_t)(total_alloc - total_found));
- leaks = 1;
+ leaks = B_TRUE;
}
if (tzb->zb_count == 0)
(void) printf("\tSPA allocated: %10llu used: %5.2f%%\n",
(u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
+ for (i = 0; i < NUM_BP_EMBEDDED_TYPES; i++) {
+ if (zcb.zcb_embedded_blocks[i] == 0)
+ continue;
+ (void) printf("\n");
+ (void) printf("\tadditional, non-pointer bps of type %u: "
+ "%10llu\n",
+ i, (u_longlong_t)zcb.zcb_embedded_blocks[i]);
+
+ if (dump_opt['b'] >= 3) {
+ (void) printf("\t number of (compressed) bytes: "
+ "number of bps\n");
+ dump_histogram(zcb.zcb_embedded_histogram[i],
+ sizeof (zcb.zcb_embedded_histogram[i]) /
+ sizeof (zcb.zcb_embedded_histogram[i][0]), 0);
+ }
+ }
+
if (dump_opt['b'] >= 2) {
int l, t, level;
(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
avl_index_t where;
zdb_ddt_entry_t *zdde, zdde_search;
- if (BP_IS_HOLE(bp))
+ if (BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
return (0);
if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
(void) printf("traversing objset %llu, %llu objects, "
"%lu blocks so far\n",
(u_longlong_t)zb->zb_objset,
- (u_longlong_t)bp->blk_fill,
+ (u_longlong_t)BP_GET_FILL(bp),
avl_numnodes(t));
}
case HELP_ROLLBACK:
return (gettext("\trollback [-rRf] <snapshot>\n"));
case HELP_SEND:
- return (gettext("\tsend [-DnPpRrv] [-[iI] snapshot] "
+ return (gettext("\tsend [-DnPpRrve] [-[iI] snapshot] "
"<snapshot>\n"
- "\tsend [-i snapshot|bookmark] "
+ "\tsend [-e] [-i snapshot|bookmark] "
"<filesystem|volume|snapshot>\n"));
case HELP_SET:
return (gettext("\tset <property=value> "
zfs_close(zhp);
return (0);
}
+
+
/*
* Report any snapshots more recent than the one specified. Used when '-r' is
* not specified. We reuse this same callback for the snapshot dependents - if
boolean_t extraverbose = B_FALSE;
/* check options */
- while ((c = getopt(argc, argv, ":i:I:RDpvnP")) != -1) {
+ while ((c = getopt(argc, argv, ":i:I:RDpvnPe")) != -1) {
switch (c) {
case 'i':
if (fromname)
case 'n':
flags.dryrun = B_TRUE;
break;
+ case 'e':
+ flags.embed_data = B_TRUE;
+ break;
case ':':
(void) fprintf(stderr, gettext("missing argument for "
"'%c' option\n"), optopt);
if (strchr(argv[0], '@') == NULL ||
(fromname && strchr(fromname, '#') != NULL)) {
char frombuf[ZFS_MAXNAMELEN];
+ enum lzc_send_flags lzc_flags = 0;
if (flags.replicate || flags.doall || flags.props ||
flags.dedup || flags.dryrun || flags.verbose ||
if (zhp == NULL)
return (1);
+ if (flags.embed_data)
+ lzc_flags |= LZC_SEND_FLAG_EMBED_DATA;
+
if (fromname != NULL &&
(fromname[0] == '#' || fromname[0] == '@')) {
/*
(void) strlcat(frombuf, fromname, sizeof (frombuf));
fromname = frombuf;
}
- err = zfs_send_one(zhp, fromname, STDOUT_FILENO);
+ err = zfs_send_one(zhp, fromname, STDOUT_FILENO, lzc_flags);
zfs_close(zhp);
return (err != 0);
}
#include <sys/zfs_ioctl.h>
#include <zfs_fletcher.h>
-uint64_t drr_record_count[DRR_NUMTYPES];
uint64_t total_write_size = 0;
uint64_t total_stream_len = 0;
FILE *send_stream = 0;
main(int argc, char *argv[])
{
char *buf = malloc(INITIAL_BUFLEN);
+ uint64_t drr_record_count[DRR_NUMTYPES] = { 0 };
+ uint64_t total_records = 0;
dmu_replay_record_t thedrr;
dmu_replay_record_t *drr = &thedrr;
struct drr_begin *drrb = &thedrr.drr_u.drr_begin;
struct drr_write_byref *drrwbr = &thedrr.drr_u.drr_write_byref;
struct drr_free *drrf = &thedrr.drr_u.drr_free;
struct drr_spill *drrs = &thedrr.drr_u.drr_spill;
+ struct drr_write_embedded *drrwe = &thedrr.drr_u.drr_write_embedded;
char c;
boolean_t verbose = B_FALSE;
boolean_t first = B_TRUE;
}
drr_record_count[drr->drr_type]++;
+ total_records++;
switch (drr->drr_type) {
case DRR_BEGIN:
drro->drr_bonuslen);
}
if (drro->drr_bonuslen > 0) {
- (void) ssread(buf, P2ROUNDUP(drro->drr_bonuslen,
- 8), &zc);
+ (void) ssread(buf,
+ P2ROUNDUP(drro->drr_bonuslen, 8), &zc);
}
break;
}
(void) ssread(buf, drrs->drr_length, &zc);
break;
+ case DRR_WRITE_EMBEDDED:
+ if (do_byteswap) {
+ drrwe->drr_object =
+ BSWAP_64(drrwe->drr_object);
+ drrwe->drr_offset =
+ BSWAP_64(drrwe->drr_offset);
+ drrwe->drr_length =
+ BSWAP_64(drrwe->drr_length);
+ drrwe->drr_toguid =
+ BSWAP_64(drrwe->drr_toguid);
+ drrwe->drr_lsize =
+ BSWAP_32(drrwe->drr_lsize);
+ drrwe->drr_psize =
+ BSWAP_32(drrwe->drr_psize);
+ }
+ if (verbose) {
+ (void) printf("WRITE_EMBEDDED object = %llu "
+ "offset = %llu length = %llu\n"
+ "toguid = %llx comp = %u etype = %u "
+ "lsize = %u psize = %u\n",
+ (u_longlong_t)drrwe->drr_object,
+ (u_longlong_t)drrwe->drr_offset,
+ (u_longlong_t)drrwe->drr_length,
+ (u_longlong_t)drrwe->drr_toguid,
+ drrwe->drr_compression,
+ drrwe->drr_etype,
+ drrwe->drr_lsize,
+ drrwe->drr_psize);
+ }
+ (void) ssread(buf,
+ P2ROUNDUP(drrwe->drr_psize, 8), &zc);
+ break;
case DRR_NUMTYPES:
/* should never be reached */
exit(1);
(u_longlong_t)drr_record_count[DRR_FREEOBJECTS]);
(void) printf("\tTotal DRR_WRITE records = %lld\n",
(u_longlong_t)drr_record_count[DRR_WRITE]);
+ (void) printf("\tTotal DRR_WRITE_BYREF records = %lld\n",
+ (u_longlong_t)drr_record_count[DRR_WRITE_BYREF]);
+ (void) printf("\tTotal DRR_WRITE_EMBEDDED records = %lld\n",
+ (u_longlong_t)drr_record_count[DRR_WRITE_EMBEDDED]);
(void) printf("\tTotal DRR_FREE records = %lld\n",
(u_longlong_t)drr_record_count[DRR_FREE]);
(void) printf("\tTotal DRR_SPILL records = %lld\n",
(u_longlong_t)drr_record_count[DRR_SPILL]);
(void) printf("\tTotal records = %lld\n",
- (u_longlong_t)(drr_record_count[DRR_BEGIN] +
- drr_record_count[DRR_OBJECT] +
- drr_record_count[DRR_FREEOBJECTS] +
- drr_record_count[DRR_WRITE] +
- drr_record_count[DRR_FREE] +
- drr_record_count[DRR_SPILL] +
- drr_record_count[DRR_END]));
+ (u_longlong_t)total_records);
(void) printf("\tTotal write size = %lld (0x%llx)\n",
(u_longlong_t)total_write_size, (u_longlong_t)total_write_size);
(void) printf("\tTotal stream length = %lld (0x%llx)\n",
* At random times, the child self-immolates with a SIGKILL.
* This is the software equivalent of pulling the power cord.
* The parent then runs the test again, using the existing
- * storage pool, as many times as desired. If backwards compatability
+ * storage pool, as many times as desired. If backwards compatibility
* testing is enabled ztest will sometimes run the "older" version
* of ztest after a SIGKILL.
*
ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
{
- ASSERT(bt->bt_magic == BT_MAGIC);
- ASSERT(bt->bt_objset == dmu_objset_id(os));
- ASSERT(bt->bt_object == object);
- ASSERT(bt->bt_offset == offset);
- ASSERT(bt->bt_gen <= gen);
- ASSERT(bt->bt_txg <= txg);
- ASSERT(bt->bt_crtxg == crtxg);
+ ASSERT3U(bt->bt_magic, ==, BT_MAGIC);
+ ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os));
+ ASSERT3U(bt->bt_object, ==, object);
+ ASSERT3U(bt->bt_offset, ==, offset);
+ ASSERT3U(bt->bt_gen, <=, gen);
+ ASSERT3U(bt->bt_txg, <=, txg);
+ ASSERT3U(bt->bt_crtxg, ==, crtxg);
}
static ztest_block_tag_t *
if (error)
fatal(0, "dmu_objset_own(%s) = %d", snap2name, error);
error = dsl_dataset_promote(clone2name, NULL);
+ if (error == ENOSPC) {
+ dmu_objset_disown(os, FTAG);
+ ztest_record_enospc(FTAG);
+ goto out;
+ }
if (error != EBUSY)
fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name,
error);
return;
}
- dmu_object_set_checksum(os, bigobj,
- (enum zio_checksum)ztest_random_dsl_prop(ZFS_PROP_CHECKSUM), tx);
+ enum zio_checksum cksum;
+ do {
+ cksum = (enum zio_checksum)
+ ztest_random_dsl_prop(ZFS_PROP_CHECKSUM);
+ } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS);
+ dmu_object_set_checksum(os, bigobj, cksum, tx);
- dmu_object_set_compress(os, bigobj,
- (enum zio_compress)ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), tx);
+ enum zio_compress comp;
+ do {
+ comp = (enum zio_compress)
+ ztest_random_dsl_prop(ZFS_PROP_COMPRESSION);
+ } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS);
+ dmu_object_set_compress(os, bigobj, comp, tx);
/*
* For each index from n to n + s, verify that the existing bufwad
error = dsl_dataset_user_hold(holds, 0, NULL);
fnvlist_free(holds);
- if (error)
- fatal(0, "dsl_dataset_user_hold(%s)", fullname, tag);
+ if (error == ENOSPC) {
+ ztest_record_enospc("dsl_dataset_user_hold");
+ goto out;
+ } else if (error) {
+ fatal(0, "dsl_dataset_user_hold(%s, %s) = %u",
+ fullname, tag, error);
+ }
error = dsl_destroy_snapshot(fullname, B_FALSE);
if (error != EBUSY) {
}
(void) sprintf(zdb,
- "%s -bcc%s%s -U %s %s",
+ "%s -bcc%s%s -d -U %s %s",
bin,
ztest_opts.zo_verbose >= 3 ? "s" : "",
ztest_opts.zo_verbose >= 4 ? "v" : "",
#include <sys/fs/zfs.h>
#include <sys/avl.h>
#include <ucred.h>
+#include <libzfs_core.h>
#ifdef __cplusplus
extern "C" {
/* show progress (ie. -v) */
boolean_t progress;
+
+ /* WRITE_EMBEDDED records of type DATA are permitted */
+ boolean_t embed_data;
} sendflags_t;
typedef boolean_t (snapfilter_cb_t)(zfs_handle_t *, void *);
extern int zfs_send(zfs_handle_t *, const char *, const char *,
sendflags_t *, int, snapfilter_cb_t, void *, nvlist_t **);
-extern int zfs_send_one(zfs_handle_t *, const char *, int);
+extern int zfs_send_one(zfs_handle_t *, const char *, int, enum lzc_send_flags);
extern int zfs_promote(zfs_handle_t *);
extern int zfs_hold(zfs_handle_t *, const char *, const char *,
int lzc_release(nvlist_t *, nvlist_t **);
int lzc_get_holds(const char *, nvlist_t **);
-int lzc_send(const char *, const char *, int);
+enum lzc_send_flags {
+ LZC_SEND_FLAG_EMBED_DATA = 1 << 0
+};
+
+int lzc_send(const char *, const char *, int, enum lzc_send_flags);
int lzc_receive(const char *, nvlist_t *, const char *, boolean_t, int);
int lzc_send_space(const char *, const char *, uint64_t *);
$(top_srcdir)/include/sys/arc.h \
$(top_srcdir)/include/sys/avl.h \
$(top_srcdir)/include/sys/avl_impl.h \
+ $(top_srcdir)/include/sys/blkptr.h \
$(top_srcdir)/include/sys/bplist.h \
$(top_srcdir)/include/sys/bpobj.h \
$(top_srcdir)/include/sys/bptree.h \
--- /dev/null
+/*
+ * CDDL HEADER START
+ *
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source. A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2013 by Delphix. All rights reserved.
+ */
+
+#ifndef _SYS_BLKPTR_H
+#define _SYS_BLKPTR_H
+
+#include <sys/spa.h>
+#include <sys/zio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void encode_embedded_bp_compressed(blkptr_t *, void *,
+ enum zio_compress, int, int);
+void decode_embedded_bp_compressed(const blkptr_t *, void *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_BLKPTR_H */
void dbuf_assign_arcbuf(dmu_buf_impl_t *db, arc_buf_t *buf, dmu_tx_t *tx);
dbuf_dirty_record_t *dbuf_dirty(dmu_buf_impl_t *db, dmu_tx_t *tx);
arc_buf_t *dbuf_loan_arcbuf(dmu_buf_impl_t *db);
+void dmu_buf_write_embedded(dmu_buf_t *dbuf, void *data,
+ bp_embedded_type_t etype, enum zio_compress comp,
+ int uncompressed_size, int compressed_size, int byteorder, dmu_tx_t *tx);
void dbuf_clear(dmu_buf_impl_t *db);
void dbuf_evict(dmu_buf_impl_t *db);
((ot) & DMU_OT_METADATA) : \
dmu_ot[(int)(ot)].ot_metadata)
+/*
+ * These object types use bp_fill != 1 for their L0 bp's. Therefore they can't
+ * have their data embedded (i.e. use a BP_IS_EMBEDDED() bp), because bp_fill
+ * is repurposed for embedded BPs.
+ */
+#define DMU_OT_HAS_FILL(ot) \
+ ((ot) == DMU_OT_DNODE || (ot) == DMU_OT_OBJSET)
+
#define DMU_OT_BYTESWAP(ot) (((ot) & DMU_OT_NEWTYPE) ? \
((ot) & DMU_OT_BYTESWAP_MASK) : \
dmu_ot[(int)(ot)].ot_byteswap)
void dmu_object_set_compress(objset_t *os, uint64_t object, uint8_t compress,
dmu_tx_t *tx);
+void
+dmu_write_embedded(objset_t *os, uint64_t object, uint64_t offset,
+ void *data, uint8_t etype, uint8_t comp, int uncompressed_size,
+ int compressed_size, int byteorder, dmu_tx_t *tx);
+
/*
* Decide how to write a block: checksum, compression, number of copies, etc.
*/
int dsa_err;
dmu_pendop_t dsa_pending_op;
boolean_t dsa_incremental;
+ uint64_t dsa_featureflags;
uint64_t dsa_last_data_object;
uint64_t dsa_last_data_offset;
} dmu_sendarg_t;
void dmu_object_zapify(objset_t *, uint64_t, dmu_object_type_t, dmu_tx_t *);
void dmu_object_free_zapified(objset_t *, uint64_t, dmu_tx_t *);
+int dmu_buf_hold_noread(objset_t *, uint64_t, uint64_t,
+ void *, dmu_buf_t **);
#ifdef __cplusplus
}
struct drr_begin;
struct avl_tree;
-int dmu_send(const char *tosnap, const char *fromsnap, int outfd,
- struct vnode *vp, offset_t *off);
+int dmu_send(const char *tosnap, const char *fromsnap, boolean_t embedok,
+ int outfd, struct vnode *vp, offset_t *off);
int dmu_send_estimate(struct dsl_dataset *ds, struct dsl_dataset *fromds,
uint64_t *sizep);
int dmu_send_obj(const char *pool, uint64_t tosnap, uint64_t fromsnap,
- int outfd, struct vnode *vp, offset_t *off);
+ boolean_t embedok, int outfd, vnode_t *vp, offset_t *off);
typedef struct dmu_recv_cookie {
struct dsl_dataset *drc_ds;
* +-------+-------+-------+-------+-------+-------+-------+-------+
* 5 |G| offset3 |
* +-------+-------+-------+-------+-------+-------+-------+-------+
- * 6 |BDX|lvl| type | cksum | comp | PSIZE | LSIZE |
+ * 6 |BDX|lvl| type | cksum |E| comp| PSIZE | LSIZE |
* +-------+-------+-------+-------+-------+-------+-------+-------+
* 7 | padding |
* +-------+-------+-------+-------+-------+-------+-------+-------+
* G gang block indicator
* B byteorder (endianness)
* D dedup
- * X unused
+ * X encryption (on version 30, which is not supported)
+ * E blkptr_t contains embedded data (see below)
* lvl level of indirection
* type DMU object type
* phys birth txg of block allocation; zero if same as logical birth txg
* fill count number of non-zero blocks under this bp
* checksum[4] 256-bit checksum of the data this bp describes
*/
+
+/*
+ * "Embedded" blkptr_t's don't actually point to a block, instead they
+ * have a data payload embedded in the blkptr_t itself. See the comment
+ * in blkptr.c for more details.
+ *
+ * The blkptr_t is laid out as follows:
+ *
+ * 64 56 48 40 32 24 16 8 0
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 0 | payload |
+ * 1 | payload |
+ * 2 | payload |
+ * 3 | payload |
+ * 4 | payload |
+ * 5 | payload |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 6 |BDX|lvl| type | etype |E| comp| PSIZE| LSIZE |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 7 | payload |
+ * 8 | payload |
+ * 9 | payload |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * a | logical birth txg |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * b | payload |
+ * c | payload |
+ * d | payload |
+ * e | payload |
+ * f | payload |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * Legend:
+ *
+ * payload contains the embedded data
+ * B (byteorder) byteorder (endianness)
+ * D (dedup) padding (set to zero)
+ * X encryption (set to zero; see above)
+ * E (embedded) set to one
+ * lvl indirection level
+ * type DMU object type
+ * etype how to interpret embedded data (BP_EMBEDDED_TYPE_*)
+ * comp compression function of payload
+ * PSIZE size of payload after compression, in bytes
+ * LSIZE logical size of payload, in bytes
+ * note that 25 bits is enough to store the largest
+ * "normal" BP's LSIZE (2^16 * 2^9) in bytes
+ * log. birth transaction group in which the block was logically born
+ *
+ * Note that LSIZE and PSIZE are stored in bytes, whereas for non-embedded
+ * bp's they are stored in units of SPA_MINBLOCKSHIFT.
+ * Generally, the generic BP_GET_*() macros can be used on embedded BP's.
+ * The B, D, X, lvl, type, and comp fields are stored the same as with normal
+ * BP's so the BP_SET_* macros can be used with them. etype, PSIZE, LSIZE must
+ * be set with the BPE_SET_* macros. BP_SET_EMBEDDED() should be called before
+ * other macros, as they assert that they are only used on BP's of the correct
+ * "embedded-ness".
+ */
+
+#define BPE_GET_ETYPE(bp) \
+ (ASSERT(BP_IS_EMBEDDED(bp)), \
+ BF64_GET((bp)->blk_prop, 40, 8))
+#define BPE_SET_ETYPE(bp, t) do { \
+ ASSERT(BP_IS_EMBEDDED(bp)); \
+ BF64_SET((bp)->blk_prop, 40, 8, t); \
+_NOTE(CONSTCOND) } while (0)
+
+#define BPE_GET_LSIZE(bp) \
+ (ASSERT(BP_IS_EMBEDDED(bp)), \
+ BF64_GET_SB((bp)->blk_prop, 0, 25, 0, 1))
+#define BPE_SET_LSIZE(bp, x) do { \
+ ASSERT(BP_IS_EMBEDDED(bp)); \
+ BF64_SET_SB((bp)->blk_prop, 0, 25, 0, 1, x); \
+_NOTE(CONSTCOND) } while (0)
+
+#define BPE_GET_PSIZE(bp) \
+ (ASSERT(BP_IS_EMBEDDED(bp)), \
+ BF64_GET_SB((bp)->blk_prop, 25, 7, 0, 1))
+#define BPE_SET_PSIZE(bp, x) do { \
+ ASSERT(BP_IS_EMBEDDED(bp)); \
+ BF64_SET_SB((bp)->blk_prop, 25, 7, 0, 1, x); \
+_NOTE(CONSTCOND) } while (0)
+
+typedef enum bp_embedded_type {
+ BP_EMBEDDED_TYPE_DATA,
+ BP_EMBEDDED_TYPE_RESERVED, /* Reserved for an unintegrated feature. */
+ NUM_BP_EMBEDDED_TYPES = BP_EMBEDDED_TYPE_RESERVED
+} bp_embedded_type_t;
+
+#define BPE_NUM_WORDS 14
+#define BPE_PAYLOAD_SIZE (BPE_NUM_WORDS * sizeof (uint64_t))
+#define BPE_IS_PAYLOADWORD(bp, wp) \
+ ((wp) != &(bp)->blk_prop && (wp) != &(bp)->blk_birth)
+
#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */
#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */
#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
#define BP_GET_LSIZE(bp) \
- BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1)
-#define BP_SET_LSIZE(bp, x) \
- BF64_SET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x)
+ (BP_IS_EMBEDDED(bp) ? \
+ (BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA ? BPE_GET_LSIZE(bp) : 0): \
+ BF64_GET_SB((bp)->blk_prop, 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1))
+#define BP_SET_LSIZE(bp, x) do { \
+ ASSERT(!BP_IS_EMBEDDED(bp)); \
+ BF64_SET_SB((bp)->blk_prop, \
+ 0, SPA_LSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
+_NOTE(CONSTCOND) } while (0)
#define BP_GET_PSIZE(bp) \
- BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1)
-#define BP_SET_PSIZE(bp, x) \
- BF64_SET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x)
+ (BP_IS_EMBEDDED(bp) ? 0 : \
+ BF64_GET_SB((bp)->blk_prop, 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1))
+#define BP_SET_PSIZE(bp, x) do { \
+ ASSERT(!BP_IS_EMBEDDED(bp)); \
+ BF64_SET_SB((bp)->blk_prop, \
+ 16, SPA_PSIZEBITS, SPA_MINBLOCKSHIFT, 1, x); \
+_NOTE(CONSTCOND) } while (0)
+
+#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 7)
+#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 7, x)
-#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8)
-#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x)
+#define BP_IS_EMBEDDED(bp) BF64_GET((bp)->blk_prop, 39, 1)
+#define BP_SET_EMBEDDED(bp, x) BF64_SET((bp)->blk_prop, 39, 1, x)
-#define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8)
-#define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x)
+#define BP_GET_CHECKSUM(bp) \
+ (BP_IS_EMBEDDED(bp) ? ZIO_CHECKSUM_OFF : \
+ BF64_GET((bp)->blk_prop, 40, 8))
+#define BP_SET_CHECKSUM(bp, x) do { \
+ ASSERT(!BP_IS_EMBEDDED(bp)); \
+ BF64_SET((bp)->blk_prop, 40, 8, x); \
+_NOTE(CONSTCOND) } while (0)
#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
-#define BP_GET_PROP_BIT_61(bp) BF64_GET((bp)->blk_prop, 61, 1)
-#define BP_SET_PROP_BIT_61(bp, x) BF64_SET((bp)->blk_prop, 61, 1, x)
-
#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1)
#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x)
#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
#define BP_PHYSICAL_BIRTH(bp) \
- ((bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
+ (BP_IS_EMBEDDED(bp) ? 0 : \
+ (bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth)
#define BP_SET_BIRTH(bp, logical, physical) \
{ \
+ ASSERT(!BP_IS_EMBEDDED(bp)); \
(bp)->blk_birth = (logical); \
(bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \
}
+#define BP_GET_FILL(bp) (BP_IS_EMBEDDED(bp) ? 1 : (bp)->blk_fill)
+
#define BP_GET_ASIZE(bp) \
- (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
- DVA_GET_ASIZE(&(bp)->blk_dva[2]))
+ (BP_IS_EMBEDDED(bp) ? 0 : \
+ DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
+ DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
+ DVA_GET_ASIZE(&(bp)->blk_dva[2]))
#define BP_GET_UCSIZE(bp) \
((BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) ? \
BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
#define BP_GET_NDVAS(bp) \
- (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
+ (BP_IS_EMBEDDED(bp) ? 0 : \
+ !!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
!!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
!!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
#define BP_COUNT_GANG(bp) \
+ (BP_IS_EMBEDDED(bp) ? 0 : \
(DVA_GET_GANG(&(bp)->blk_dva[0]) + \
DVA_GET_GANG(&(bp)->blk_dva[1]) + \
- DVA_GET_GANG(&(bp)->blk_dva[2]))
+ DVA_GET_GANG(&(bp)->blk_dva[2])))
#define DVA_EQUAL(dva1, dva2) \
((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
#define BP_EQUAL(bp1, bp2) \
(BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \
+ (bp1)->blk_birth == (bp2)->blk_birth && \
DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \
DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \
DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2]))
(zcp)->zc_word[3] = w3; \
}
-#define BP_IDENTITY(bp) (&(bp)->blk_dva[0])
-#define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp))
+#define BP_IDENTITY(bp) (ASSERT(!BP_IS_EMBEDDED(bp)), &(bp)->blk_dva[0])
+#define BP_IS_GANG(bp) \
+ (BP_IS_EMBEDDED(bp) ? B_FALSE : DVA_GET_GANG(BP_IDENTITY(bp)))
#define DVA_IS_EMPTY(dva) ((dva)->dva_word[0] == 0ULL && \
(dva)->dva_word[1] == 0ULL)
-#define BP_IS_HOLE(bp) DVA_IS_EMPTY(BP_IDENTITY(bp))
+#define BP_IS_HOLE(bp) \
+ (!BP_IS_EMBEDDED(bp) && DVA_IS_EMPTY(BP_IDENTITY(bp)))
/* BP_IS_RAIDZ(bp) assumes no block compression */
#define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \
" birth=%lluL", \
(u_longlong_t)bp->blk_birth); \
} \
+ } else if (BP_IS_EMBEDDED(bp)) { \
+ len = func(buf + len, size - len, \
+ "EMBEDDED [L%llu %s] et=%u %s " \
+ "size=%llxL/%llxP birth=%lluL", \
+ (u_longlong_t)BP_GET_LEVEL(bp), \
+ type, \
+ (int)BPE_GET_ETYPE(bp), \
+ compress, \
+ (u_longlong_t)BPE_GET_LSIZE(bp), \
+ (u_longlong_t)BPE_GET_PSIZE(bp), \
+ (u_longlong_t)bp->blk_birth); \
} else { \
for (d = 0; d < BP_GET_NDVAS(bp); d++) { \
const dva_t *dva = &bp->blk_dva[d]; \
(u_longlong_t)BP_GET_PSIZE(bp), \
(u_longlong_t)bp->blk_birth, \
(u_longlong_t)BP_PHYSICAL_BIRTH(bp), \
- (u_longlong_t)bp->blk_fill, \
+ (u_longlong_t)BP_GET_FILL(bp), \
ws, \
(u_longlong_t)bp->blk_cksum.zc_word[0], \
(u_longlong_t)bp->blk_cksum.zc_word[1], \
#include <sys/refcount.h>
#include <sys/bplist.h>
#include <sys/bpobj.h>
+#include <sys/zfeature.h>
#include <zfeature_common.h>
#ifdef __cplusplus
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
*/
#ifndef _SYS_ZFS_IOCTL_H
* Feature flags for zfs send streams (flags in drr_versioninfo)
*/
-#define DMU_BACKUP_FEATURE_DEDUP (0x1)
-#define DMU_BACKUP_FEATURE_DEDUPPROPS (0x2)
-#define DMU_BACKUP_FEATURE_SA_SPILL (0x4)
+#define DMU_BACKUP_FEATURE_DEDUP (1<<0)
+#define DMU_BACKUP_FEATURE_DEDUPPROPS (1<<1)
+#define DMU_BACKUP_FEATURE_SA_SPILL (1<<2)
+/* flags #3 - #15 are reserved for incompatible closed-source implementations */
+#define DMU_BACKUP_FEATURE_EMBED_DATA (1<<16)
+#define DMU_BACKUP_FEATURE_EMBED_DATA_LZ4 (1<<17)
/*
* Mask of all supported backup features
*/
#define DMU_BACKUP_FEATURE_MASK (DMU_BACKUP_FEATURE_DEDUP | \
- DMU_BACKUP_FEATURE_DEDUPPROPS | DMU_BACKUP_FEATURE_SA_SPILL)
+ DMU_BACKUP_FEATURE_DEDUPPROPS | DMU_BACKUP_FEATURE_SA_SPILL | \
+ DMU_BACKUP_FEATURE_EMBED_DATA | DMU_BACKUP_FEATURE_EMBED_DATA_LZ4)
/* Are all features in the given flag word currently supported? */
#define DMU_STREAM_SUPPORTED(x) (!((x) & ~DMU_BACKUP_FEATURE_MASK))
enum {
DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS,
DRR_WRITE, DRR_FREE, DRR_END, DRR_WRITE_BYREF,
- DRR_SPILL, DRR_NUMTYPES
+ DRR_SPILL, DRR_WRITE_EMBEDDED, DRR_NUMTYPES
} drr_type;
uint32_t drr_payloadlen;
union {
uint64_t drr_pad[4]; /* needed for crypto */
/* spill data follows */
} drr_spill;
+ struct drr_write_embedded {
+ uint64_t drr_object;
+ uint64_t drr_offset;
+ /* logical length, should equal blocksize */
+ uint64_t drr_length;
+ uint64_t drr_toguid;
+ uint8_t drr_compression;
+ uint8_t drr_etype;
+ uint8_t drr_pad[6];
+ uint32_t drr_lsize; /* uncompressed size of payload */
+ uint32_t drr_psize; /* compr. (real) size of payload */
+ /* (possibly compressed) content follows */
+ } drr_write_embedded;
} drr_u;
} dmu_replay_record_t;
dmu_objset_stats_t zc_objset_stats;
struct drr_begin zc_begin_record;
zinject_record_t zc_inject_record;
- boolean_t zc_defer_destroy;
- boolean_t zc_temphold;
+ uint32_t zc_defer_destroy;
+ uint32_t zc_flags;
uint64_t zc_action_handle;
int zc_cleanup_fd;
uint8_t zc_simple;
ZIO_CHECKSUM_FUNCTIONS
};
+/*
+ * The number of "legacy" compression functions which can be set on individual
+ * objects.
+ */
+#define ZIO_CHECKSUM_LEGACY_FUNCTIONS ZIO_CHECKSUM_ZILOG2
+
#define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_4
#define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON
ZIO_COMPRESS_FUNCTIONS
};
+/*
+ * The number of "legacy" compression functions which can be set on individual
+ * objects.
+ */
+#define ZIO_COMPRESS_LEGACY_FUNCTIONS ZIO_COMPRESS_LZ4
+
#define ZIO_COMPRESS_ON_VALUE ZIO_COMPRESS_LZJB
#define ZIO_COMPRESS_DEFAULT ZIO_COMPRESS_OFF
SPA_FEATURE_ENABLED_TXG,
SPA_FEATURE_HOLE_BIRTH,
SPA_FEATURE_EXTENSIBLE_DATASET,
+ SPA_FEATURE_EMBEDDED_DATA,
SPA_FEATURE_BOOKMARKS,
SPA_FEATURES
} spa_feature_t;
const spa_feature_t *fi_depends;
} zfeature_info_t;
-typedef int (zfeature_func_t)(zfeature_info_t *fi, void *arg);
+typedef int (zfeature_func_t)(zfeature_info_t *, void *);
#define ZFS_FEATURE_DEBUG
extern boolean_t zfeature_is_valid_guid(const char *);
extern boolean_t zfeature_is_supported(const char *);
-extern int zfeature_lookup_name(const char *name, spa_feature_t *res);
-extern boolean_t zfeature_depends_on(spa_feature_t fid, spa_feature_t check);
+extern int zfeature_lookup_name(const char *, spa_feature_t *);
+extern boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t);
extern void zpool_feature_init(void);
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2013 by Delphix. All rights reserved.
+ * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
* Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>.
* All rights reserved
#include <time.h>
#include <libzfs.h>
+#include <libzfs_core.h>
#include "zfs_namecheck.h"
#include "zfs_prop.h"
struct drr_object *drro = &thedrr.drr_u.drr_object;
struct drr_write *drrw = &thedrr.drr_u.drr_write;
struct drr_spill *drrs = &thedrr.drr_u.drr_spill;
+ struct drr_write_embedded *drrwe = &thedrr.drr_u.drr_write_embedded;
FILE *ofp;
int outfd;
dmu_replay_record_t wbr_drr = {0};
break;
}
+ case DRR_WRITE_EMBEDDED:
+ {
+ if (cksum_and_write(drr, sizeof (dmu_replay_record_t),
+ &stream_cksum, outfd) == -1)
+ goto out;
+ (void) ssread(buf,
+ P2ROUNDUP((uint64_t)drrwe->drr_psize, 8), ofp);
+ if (cksum_and_write(buf,
+ P2ROUNDUP((uint64_t)drrwe->drr_psize, 8),
+ &stream_cksum, outfd) == -1)
+ goto out;
+ break;
+ }
+
case DRR_FREE:
{
if (cksum_and_write(drr, sizeof (dmu_replay_record_t),
char prevsnap[ZFS_MAXNAMELEN];
uint64_t prevsnap_obj;
boolean_t seenfrom, seento, replicate, doall, fromorigin;
- boolean_t verbose, dryrun, parsable, progress;
+ boolean_t verbose, dryrun, parsable, progress, embed_data;
int outfd;
boolean_t err;
nvlist_t *fss;
*/
static int
dump_ioctl(zfs_handle_t *zhp, const char *fromsnap, uint64_t fromsnap_obj,
- boolean_t fromorigin, int outfd, nvlist_t *debugnv)
+ boolean_t fromorigin, int outfd, enum lzc_send_flags flags,
+ nvlist_t *debugnv)
{
zfs_cmd_t zc = {"\0"};
libzfs_handle_t *hdl = zhp->zfs_hdl;
zc.zc_obj = fromorigin;
zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID);
zc.zc_fromobj = fromsnap_obj;
+ zc.zc_flags = flags;
VERIFY(0 == nvlist_alloc(&thisdbg, NV_UNIQUE_NAME, 0));
if (fromsnap && fromsnap[0] != '\0') {
}
}
+ enum lzc_send_flags flags = 0;
+ if (sdd->embed_data)
+ flags |= LZC_SEND_FLAG_EMBED_DATA;
+
err = dump_ioctl(zhp, sdd->prevsnap, sdd->prevsnap_obj,
- fromorigin, sdd->outfd, sdd->debugnv);
+ fromorigin, sdd->outfd, flags, sdd->debugnv);
if (sdd->progress) {
(void) pthread_cancel(tid);
sdd.parsable = flags->parsable;
sdd.progress = flags->progress;
sdd.dryrun = flags->dryrun;
+ sdd.embed_data = flags->embed_data;
sdd.filter_cb = filter_func;
sdd.filter_cb_arg = cb_arg;
if (debugnvp)
}
int
-zfs_send_one(zfs_handle_t *zhp, const char *from, int fd)
+zfs_send_one(zfs_handle_t *zhp, const char *from, int fd,
+ enum lzc_send_flags flags)
{
int err;
libzfs_handle_t *hdl = zhp->zfs_hdl;
(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
"warning: cannot send '%s'"), zhp->zfs_name);
- err = lzc_send(zhp->zfs_name, from, fd);
+ err = lzc_send(zhp->zfs_name, from, fd, flags);
if (err != 0) {
switch (errno) {
case EXDEV:
(void) recv_read(hdl, fd, buf,
drr->drr_u.drr_spill.drr_length, B_FALSE, NULL);
break;
+ case DRR_WRITE_EMBEDDED:
+ if (byteswap) {
+ drr->drr_u.drr_write_embedded.drr_psize =
+ BSWAP_32(drr->drr_u.drr_write_embedded.
+ drr_psize);
+ }
+ (void) recv_read(hdl, fd, buf,
+ P2ROUNDUP(drr->drr_u.drr_write_embedded.drr_psize,
+ 8), B_FALSE, NULL);
+ break;
case DRR_WRITE_BYREF:
case DRR_FREEOBJECTS:
case DRR_FREE:
}
/*
+ * Generate a zfs send stream for the specified snapshot and write it to
+ * the specified file descriptor.
*
* "snapname" is the full name of the snapshot to send (e.g. "pool/fs@snap")
*
* snapshot in the origin, etc.
*
* "fd" is the file descriptor to write the send stream to.
+ *
+ * If "flags" contains LZC_SEND_FLAG_EMBED_DATA, the stream is permitted
+ * to contain DRR_WRITE_EMBEDDED records with drr_etype==BP_EMBEDDED_TYPE_DATA,
+ * which the receiving system must support (as indicated by support
+ * for the "embedded_data" feature).
*/
int
-lzc_send(const char *snapname, const char *from, int fd)
+lzc_send(const char *snapname, const char *from, int fd,
+ enum lzc_send_flags flags)
{
nvlist_t *args;
int err;
fnvlist_add_int32(args, "fd", fd);
if (from != NULL)
fnvlist_add_string(args, "fromsnap", from);
+ if (flags & LZC_SEND_FLAG_EMBED_DATA)
+ fnvlist_add_boolean(args, "embedok");
err = lzc_ioctl(ZFS_IOC_SEND_NEW, snapname, args, NULL);
nvlist_free(args);
return (err);
$(top_srcdir)/module/zcommon/zpool_prop.c \
$(top_srcdir)/module/zcommon/zprop_common.c \
$(top_srcdir)/module/zfs/arc.c \
+ $(top_srcdir)/module/zfs/blkptr.c \
$(top_srcdir)/module/zfs/bplist.c \
$(top_srcdir)/module/zfs/bpobj.c \
$(top_srcdir)/module/zfs/bptree.c \
.RE
+.sp
+.ne 2
+.na
+\fB\fBembedded_data\fR\fR
+.ad
+.RS 4n
+.TS
+l l .
+GUID com.delphix:embedded_data
+READ\-ONLY COMPATIBLE no
+DEPENDENCIES none
+.TE
+
+This feature improves the performance and compression ratio of
+highly-compressible blocks. Blocks whose contents can compress to 112 bytes
+or smaller can take advantage of this feature.
+
+When this feature is enabled, the contents of highly-compressible blocks are
+stored in the block "pointer" itself (a misnomer in this case, as it contains
+the compresseed data, rather than a pointer to its location on disk). Thus
+the space of the block (one sector, typically 512 bytes or 4KB) is saved,
+and no additional i/o is needed to read and write the data block.
+
+This feature becomes \fBactive\fR as soon as it is enabled and will
+never return to being \fBenabled\fR.
+
+.RE
.SH "SEE ALSO"
\fBzpool\fR(8)
.LP
.nf
-\fBzfs\fR \fBsend\fR [\fB-DnPpRv\fR] [\fB-\fR[\fBiI\fR] \fIsnapshot\fR] \fIsnapshot\fR
+\fBzfs\fR \fBsend\fR [\fB-DnPpRve\fR] [\fB-\fR[\fBiI\fR] \fIsnapshot\fR] \fIsnapshot\fR
.fi
.LP
.nf
-\fBzfs\fR \fBsend\fR [\fB-i \fIsnapshot\fR|\fIbookmark\fR]\fR \fIfilesystem\fR|\fIvolume\fR|\fIsnapshot\fR
+\fBzfs\fR \fBsend\fR [\fB-e\fR] [\fB-i \fIsnapshot\fR|\fIbookmark\fR]\fR \fIfilesystem\fR|\fIvolume\fR|\fIsnapshot\fR
.fi
.LP
.sp
.ne 2
.na
-\fBzfs send\fR [\fB-DnPpRv\fR] [\fB-\fR[\fBiI\fR] \fIsnapshot\fR] \fIsnapshot\fR
+\fBzfs send\fR [\fB-DnPpRve\fR] [\fB-\fR[\fBiI\fR] \fIsnapshot\fR] \fIsnapshot\fR
.ad
.sp .6
.RS 4n
.ne 2
.mk
.na
+\fB\fB-e\fR\fR
+.ad
+.sp .6
+.RS 4n
+Generate a more compact stream by using WRITE_EMBEDDED records for blocks
+which are stored more compactly on disk by the \fBembedded_data\fR pool
+feature. This flag has no effect if the \fBembedded_data\fR feature is
+disabled. The receiving system must have the \fBembedded_data\fR feature
+enabled. If the \fBlz4_compress\fR feature is active on the sending system,
+then the receiving system must have that feature enabled as well. See
+\fBzpool-features\fR(5) for details on ZFS feature flags and the
+\fBembedded_data\fR feature.
+.RE
+
+.sp
+.ne 2
+.na
\fB\fB-p\fR\fR
.ad
.sp .6
.sp
.ne 2
.na
-\fBzfs send\fR [\fB-i\fR \fIsnapshot\fR|\fIbookmark\fR] \fIfilesystem\fR|\fIvolume\fR|\fIsnapshot\fR
+\fBzfs send\fR [\fB-e\fR] [\fB-i\fR \fIsnapshot\fR|\fIbookmark\fR] \fIfilesystem\fR|\fIvolume\fR|\fIsnapshot\fR
.ad
.sp .6
.RS 4n
Force a rollback of the file system to the most recent snapshot before performing the receive operation. If receiving an incremental replication stream (for example, one generated by \fBzfs send -R -[iI]\fR), destroy snapshots and file systems that do not exist on the sending side.
.RE
+.sp
+.ne 2
+.na
+\fB\fB-e\fR\fR
+.ad
+.sp .6
+.RS 4n
+Generate a more compact stream by using WRITE_EMBEDDED records for blocks
+which are stored more compactly on disk by the \fBembedded_data\fR pool
+feature. This flag has no effect if the \fBembedded_data\fR feature is
+disabled. The receiving system must have the \fBembedded_data\fR feature
+enabled. If the \fBlz4_compress\fR feature is active on the sending system,
+then the receiving system must have that feature enabled as well. See
+\fBzpool-features\fR(5) for details on ZFS feature flags and the
+\fBembedded_data\fR feature.
+.RE
.RE
.sp
obj-$(CONFIG_ZFS) := $(MODULE).o
$(MODULE)-objs += @top_srcdir@/module/zfs/arc.o
+$(MODULE)-objs += @top_srcdir@/module/zfs/blkptr.o
$(MODULE)-objs += @top_srcdir@/module/zfs/bplist.o
$(MODULE)-objs += @top_srcdir@/module/zfs/bpobj.o
$(MODULE)-objs += @top_srcdir@/module/zfs/dbuf.o
}
static arc_buf_hdr_t *
-buf_hash_find(uint64_t spa, const dva_t *dva, uint64_t birth, kmutex_t **lockp)
+buf_hash_find(uint64_t spa, const blkptr_t *bp, kmutex_t **lockp)
{
+ const dva_t *dva = BP_IDENTITY(bp);
+ uint64_t birth = BP_PHYSICAL_BIRTH(bp);
uint64_t idx = BUF_HASH_INDEX(spa, dva, birth);
kmutex_t *hash_lock = BUF_HASH_LOCK(idx);
arc_buf_hdr_t *buf;
arc_buf_hdr_t *fbuf;
uint32_t i;
+ ASSERT(!DVA_IS_EMPTY(&buf->b_dva));
+ ASSERT(buf->b_birth != 0);
ASSERT(!HDR_IN_HASH_TABLE(buf));
*lockp = hash_lock;
mutex_enter(hash_lock);
static void
arc_read_done(zio_t *zio)
{
- arc_buf_hdr_t *hdr, *found;
+ arc_buf_hdr_t *hdr;
arc_buf_t *buf;
arc_buf_t *abuf; /* buffer we're assigning to callback */
- kmutex_t *hash_lock;
+ kmutex_t *hash_lock = NULL;
arc_callback_t *callback_list, *acb;
int freeable = FALSE;
* reason for it not to be found is if we were freed during the
* read.
*/
- found = buf_hash_find(hdr->b_spa, &hdr->b_dva, hdr->b_birth,
- &hash_lock);
-
- ASSERT((found == NULL && HDR_FREED_IN_READ(hdr) && hash_lock == NULL) ||
- (found == hdr && DVA_EQUAL(&hdr->b_dva, BP_IDENTITY(zio->io_bp))) ||
- (found == hdr && HDR_L2_READING(hdr)));
+ if (HDR_IN_HASH_TABLE(hdr)) {
+ arc_buf_hdr_t *found;
+
+ ASSERT3U(hdr->b_birth, ==, BP_PHYSICAL_BIRTH(zio->io_bp));
+ ASSERT3U(hdr->b_dva.dva_word[0], ==,
+ BP_IDENTITY(zio->io_bp)->dva_word[0]);
+ ASSERT3U(hdr->b_dva.dva_word[1], ==,
+ BP_IDENTITY(zio->io_bp)->dva_word[1]);
+
+ found = buf_hash_find(hdr->b_spa, zio->io_bp,
+ &hash_lock);
+
+ ASSERT((found == NULL && HDR_FREED_IN_READ(hdr) &&
+ hash_lock == NULL) ||
+ (found == hdr &&
+ DVA_EQUAL(&hdr->b_dva, BP_IDENTITY(zio->io_bp))) ||
+ (found == hdr && HDR_L2_READING(hdr)));
+ }
hdr->b_flags &= ~ARC_L2_EVICTED;
if (l2arc_noprefetch && (hdr->b_flags & ARC_PREFETCH))
void *private, zio_priority_t priority, int zio_flags, uint32_t *arc_flags,
const zbookmark_t *zb)
{
- arc_buf_hdr_t *hdr;
+ arc_buf_hdr_t *hdr = NULL;
arc_buf_t *buf = NULL;
- kmutex_t *hash_lock;
+ kmutex_t *hash_lock = NULL;
zio_t *rzio;
uint64_t guid = spa_load_guid(spa);
int rc = 0;
+ ASSERT(!BP_IS_EMBEDDED(bp) ||
+ BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA);
+
top:
- hdr = buf_hash_find(guid, BP_IDENTITY(bp), BP_PHYSICAL_BIRTH(bp),
- &hash_lock);
- if (hdr && hdr->b_datacnt > 0) {
+ if (!BP_IS_EMBEDDED(bp)) {
+ /*
+ * Embedded BP's have no DVA and require no I/O to "read".
+ * Create an anonymous arc buf to back it.
+ */
+ hdr = buf_hash_find(guid, bp, &hash_lock);
+ }
+
+ if (hdr != NULL && hdr->b_datacnt > 0) {
*arc_flags |= ARC_CACHED;
done(NULL, buf, private);
} else {
uint64_t size = BP_GET_LSIZE(bp);
- arc_callback_t *acb;
+ arc_callback_t *acb;
vdev_t *vd = NULL;
uint64_t addr = 0;
boolean_t devw = B_FALSE;
if (hdr == NULL) {
/* this block is not in the cache */
- arc_buf_hdr_t *exists;
+ arc_buf_hdr_t *exists = NULL;
arc_buf_contents_t type = BP_GET_BUFC_TYPE(bp);
buf = arc_buf_alloc(spa, size, private, type);
hdr = buf->b_hdr;
- hdr->b_dva = *BP_IDENTITY(bp);
- hdr->b_birth = BP_PHYSICAL_BIRTH(bp);
- hdr->b_cksum0 = bp->blk_cksum.zc_word[0];
- exists = buf_hash_insert(hdr, &hash_lock);
- if (exists) {
+ if (!BP_IS_EMBEDDED(bp)) {
+ hdr->b_dva = *BP_IDENTITY(bp);
+ hdr->b_birth = BP_PHYSICAL_BIRTH(bp);
+ hdr->b_cksum0 = bp->blk_cksum.zc_word[0];
+ exists = buf_hash_insert(hdr, &hash_lock);
+ }
+ if (exists != NULL) {
/* somebody beat us to the hash insert */
mutex_exit(hash_lock);
buf_discard_identity(hdr);
vd = NULL;
}
- mutex_exit(hash_lock);
+ if (hash_lock != NULL)
+ mutex_exit(hash_lock);
/*
* At this point, we have a level 1 cache miss. Try again in
kmutex_t *hash_lock;
uint64_t guid = spa_load_guid(spa);
- hdr = buf_hash_find(guid, BP_IDENTITY(bp), BP_PHYSICAL_BIRTH(bp),
- &hash_lock);
+ ASSERT(!BP_IS_EMBEDDED(bp));
+
+ hdr = buf_hash_find(guid, bp, &hash_lock);
if (hdr == NULL)
return;
if (HDR_BUF_AVAILABLE(hdr)) {
ASSERT(hdr->b_acb == NULL);
if (zio->io_error == 0) {
- if (BP_IS_HOLE(zio->io_bp)) {
+ if (BP_IS_HOLE(zio->io_bp) || BP_IS_EMBEDDED(zio->io_bp)) {
buf_discard_identity(hdr);
} else {
hdr->b_dva = *BP_IDENTITY(zio->io_bp);
}
/*
- * If the block to be written was all-zero, we may have
- * compressed it away. In this case no write was performed
- * so there will be no dva/birth/checksum. The buffer must
- * therefore remain anonymous (and uncached).
+ * If the block to be written was all-zero or compressed enough to be
+ * embedded in the BP, no write was performed so there will be no
+ * dva/birth/checksum. The buffer must therefore remain anonymous
+ * (and uncached).
*/
if (!BUF_EMPTY(hdr)) {
arc_buf_hdr_t *exists;
l2arc_compress_buf(l2arc_buf_hdr_t *l2hdr)
{
void *cdata;
- size_t csize, len;
+ size_t csize, len, rounded;
ASSERT(l2hdr->b_compress == ZIO_COMPRESS_OFF);
ASSERT(l2hdr->b_tmp_cdata != NULL);
csize = zio_compress_data(ZIO_COMPRESS_LZ4, l2hdr->b_tmp_cdata,
cdata, l2hdr->b_asize);
+ rounded = P2ROUNDUP(csize, (size_t)SPA_MINBLOCKSIZE);
+ if (rounded > csize) {
+ bzero((char *)cdata + csize, rounded - csize);
+ csize = rounded;
+ }
+
if (csize == 0) {
/* zero block, indicate that there's nothing to write */
zio_data_buf_free(cdata, len);
--- /dev/null
+/*
+ * CDDL HEADER START
+ *
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source. A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2013 by Delphix. All rights reserved.
+ */
+
+#include <sys/zfs_context.h>
+#include <sys/zio.h>
+#include <sys/zio_compress.h>
+
+/*
+ * Embedded-data Block Pointers
+ *
+ * Normally, block pointers point (via their DVAs) to a block which holds data.
+ * If the data that we need to store is very small, this is an inefficient
+ * use of space, because a block must be at minimum 1 sector (typically 512
+ * bytes or 4KB). Additionally, reading these small blocks tends to generate
+ * more random reads.
+ *
+ * Embedded-data Block Pointers allow small pieces of data (the "payload",
+ * up to 112 bytes) to be stored in the block pointer itself, instead of
+ * being pointed to. The "Pointer" part of this name is a bit of a
+ * misnomer, as nothing is pointed to.
+ *
+ * BP_EMBEDDED_TYPE_DATA block pointers allow highly-compressible data to
+ * be embedded in the block pointer. The logic for this is handled in
+ * the SPA, by the zio pipeline. Therefore most code outside the zio
+ * pipeline doesn't need special-cases to handle these block pointers.
+ *
+ * See spa.h for details on the exact layout of embedded block pointers.
+ */
+
+void
+encode_embedded_bp_compressed(blkptr_t *bp, void *data,
+ enum zio_compress comp, int uncompressed_size, int compressed_size)
+{
+ uint64_t *bp64 = (uint64_t *)bp;
+ uint64_t w = 0;
+ uint8_t *data8 = data;
+ int i;
+
+ ASSERT3U(compressed_size, <=, BPE_PAYLOAD_SIZE);
+ ASSERT(uncompressed_size == compressed_size ||
+ comp != ZIO_COMPRESS_OFF);
+ ASSERT3U(comp, >=, ZIO_COMPRESS_OFF);
+ ASSERT3U(comp, <, ZIO_COMPRESS_FUNCTIONS);
+
+ bzero(bp, sizeof (*bp));
+ BP_SET_EMBEDDED(bp, B_TRUE);
+ BP_SET_COMPRESS(bp, comp);
+ BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
+ BPE_SET_LSIZE(bp, uncompressed_size);
+ BPE_SET_PSIZE(bp, compressed_size);
+
+ /*
+ * Encode the byte array into the words of the block pointer.
+ * First byte goes into low bits of first word (little endian).
+ */
+ for (i = 0; i < compressed_size; i++) {
+ BF64_SET(w, (i % sizeof (w)) * NBBY, NBBY, data8[i]);
+ if (i % sizeof (w) == sizeof (w) - 1) {
+ /* we've reached the end of a word */
+ ASSERT3P(bp64, <, bp + 1);
+ *bp64 = w;
+ bp64++;
+ if (!BPE_IS_PAYLOADWORD(bp, bp64))
+ bp64++;
+ w = 0;
+ }
+ }
+ /* write last partial word */
+ if (bp64 < (uint64_t *)(bp + 1))
+ *bp64 = w;
+}
+
+/*
+ * buf must be at least BPE_GET_PSIZE(bp) bytes long (which will never be
+ * more than BPE_PAYLOAD_SIZE bytes).
+ */
+void
+decode_embedded_bp_compressed(const blkptr_t *bp, void *buf)
+{
+ int psize;
+ uint8_t *buf8 = buf;
+ uint64_t w = 0;
+ const uint64_t *bp64 = (const uint64_t *)bp;
+ int i;
+
+ ASSERT(BP_IS_EMBEDDED(bp));
+
+ psize = BPE_GET_PSIZE(bp);
+
+ /*
+ * Decode the words of the block pointer into the byte array.
+ * Low bits of first word are the first byte (little endian).
+ */
+ for (i = 0; i < psize; i++) {
+ if (i % sizeof (w) == 0) {
+ /* beginning of a word */
+ ASSERT3P(bp64, <, bp + 1);
+ w = *bp64;
+ bp64++;
+ if (!BPE_IS_PAYLOADWORD(bp, bp64))
+ bp64++;
+ }
+ buf8[i] = BF64_GET(w, (i % sizeof (w)) * NBBY, NBBY);
+ }
+}
mutex_destroy(&bpo->bpo_lock);
}
+static boolean_t
+bpobj_hasentries(bpobj_t *bpo)
+{
+ return (bpo->bpo_phys->bpo_num_blkptrs != 0 ||
+ (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_num_subobjs != 0));
+}
+
static int
bpobj_iterate_impl(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx,
boolean_t free)
out:
/* If there are no entries, there should be no bytes. */
- ASSERT(bpo->bpo_phys->bpo_num_blkptrs > 0 ||
- (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_num_subobjs > 0) ||
- bpo->bpo_phys->bpo_bytes == 0);
+ if (!bpobj_hasentries(bpo)) {
+ ASSERT0(bpo->bpo_phys->bpo_bytes);
+ ASSERT0(bpo->bpo_phys->bpo_comp);
+ ASSERT0(bpo->bpo_phys->bpo_uncomp);
+ }
mutex_exit(&bpo->bpo_lock);
return (err);
VERIFY3U(0, ==, bpobj_open(&subbpo, bpo->bpo_os, subobj));
VERIFY3U(0, ==, bpobj_space(&subbpo, &used, &comp, &uncomp));
- if (used == 0) {
+ if (!bpobj_hasentries(&subbpo)) {
/* No point in having an empty subobj. */
bpobj_close(&subbpo);
bpobj_free(bpo->bpo_os, subobj, tx);
ASSERT(!BP_IS_HOLE(bp));
ASSERT(bpo->bpo_object != dmu_objset_pool(bpo->bpo_os)->dp_empty_bpobj);
+ if (BP_IS_EMBEDDED(bp)) {
+ /*
+ * The bpobj will compress better without the payload.
+ *
+ * Note that we store EMBEDDED bp's because they have an
+ * uncompressed size, which must be accounted for. An
+ * alternative would be to add their size to bpo_uncomp
+ * without storing the bp, but that would create additional
+ * complications: bpo_uncomp would be inconsistent with the
+ * set of BP's stored, and bpobj_iterate() wouldn't visit
+ * all the space accounted for in the bpobj.
+ */
+ bzero(&stored_bp, sizeof (stored_bp));
+ stored_bp.blk_prop = bp->blk_prop;
+ stored_bp.blk_birth = bp->blk_birth;
+ } else if (!BP_GET_DEDUP(bp)) {
+ /* The bpobj will compress better without the checksum */
+ bzero(&stored_bp.blk_cksum, sizeof (stored_bp.blk_cksum));
+ }
+
/* We never need the fill count. */
stored_bp.blk_fill = 0;
- /* The bpobj will compress better if we can leave off the checksum */
- if (!BP_GET_DEDUP(bp))
- bzero(&stored_bp.blk_cksum, sizeof (stored_bp.blk_cksum));
-
mutex_enter(&bpo->bpo_lock);
offset = bpo->bpo_phys->bpo_num_blkptrs * sizeof (stored_bp);
#include <sys/dmu_zfetch.h>
#include <sys/sa.h>
#include <sys/sa_impl.h>
+#include <sys/zfeature.h>
+#include <sys/blkptr.h>
#include <sys/range_tree.h>
struct dbuf_hold_impl_data {
mutex_exit(&db->db_mtx);
}
+void
+dmu_buf_write_embedded(dmu_buf_t *dbuf, void *data,
+ bp_embedded_type_t etype, enum zio_compress comp,
+ int uncompressed_size, int compressed_size, int byteorder,
+ dmu_tx_t *tx)
+{
+ dmu_buf_impl_t *db = (dmu_buf_impl_t *)dbuf;
+ struct dirty_leaf *dl;
+ dmu_object_type_t type;
+
+ DB_DNODE_ENTER(db);
+ type = DB_DNODE(db)->dn_type;
+ DB_DNODE_EXIT(db);
+
+ ASSERT0(db->db_level);
+ ASSERT(db->db_blkid != DMU_BONUS_BLKID);
+
+ dmu_buf_will_not_fill(dbuf, tx);
+
+ ASSERT3U(db->db_last_dirty->dr_txg, ==, tx->tx_txg);
+ dl = &db->db_last_dirty->dt.dl;
+ encode_embedded_bp_compressed(&dl->dr_overridden_by,
+ data, comp, uncompressed_size, compressed_size);
+ BPE_SET_ETYPE(&dl->dr_overridden_by, etype);
+ BP_SET_TYPE(&dl->dr_overridden_by, type);
+ BP_SET_LEVEL(&dl->dr_overridden_by, 0);
+ BP_SET_BYTEORDER(&dl->dr_overridden_by, byteorder);
+
+ dl->dr_override_state = DR_OVERRIDDEN;
+ dl->dr_overridden_by.blk_birth = db->db_last_dirty->dr_txg;
+}
+
/*
* Directly assign a provided arc buf to a given dbuf if it's not referenced
* by anybody except our caller. Otherwise copy arcbuf's contents to dbuf.
}
if (dbuf_findbp(dn, 0, blkid, TRUE, &db, &bp, NULL) == 0) {
- if (bp && !BP_IS_HOLE(bp)) {
+ if (bp && !BP_IS_HOLE(bp) && !BP_IS_EMBEDDED(bp)) {
dsl_dataset_t *ds = dn->dn_objset->os_dsl_dataset;
uint32_t aflags = ARC_NOWAIT | ARC_PREFETCH;
zbookmark_t zb;
uint64_t fill = 0;
int i;
- ASSERT(db->db_blkptr == bp);
+ ASSERT3P(db->db_blkptr, ==, bp);
DB_DNODE_ENTER(db);
dn = DB_DNODE(db);
ASSERT((db->db_blkid != DMU_SPILL_BLKID &&
BP_GET_TYPE(bp) == dn->dn_type) ||
(db->db_blkid == DMU_SPILL_BLKID &&
- BP_GET_TYPE(bp) == dn->dn_bonustype));
+ BP_GET_TYPE(bp) == dn->dn_bonustype) ||
+ BP_IS_EMBEDDED(bp));
ASSERT(BP_GET_LEVEL(bp) == db->db_level);
}
for (i = db->db.db_size >> SPA_BLKPTRSHIFT; i > 0; i--, ibp++) {
if (BP_IS_HOLE(ibp))
continue;
- fill += ibp->blk_fill;
+ fill += BP_GET_FILL(ibp);
}
}
DB_DNODE_EXIT(db);
- bp->blk_fill = fill;
+ if (!BP_IS_EMBEDDED(bp))
+ bp->blk_fill = fill;
mutex_exit(&db->db_mtx);
}
dn->dn_phys->dn_maxblkid >> (db->db_level * epbs));
ASSERT3U(BP_GET_LSIZE(db->db_blkptr), ==,
db->db.db_size);
- arc_set_callback(db->db_buf, dbuf_do_evict, db);
+ if (!arc_released(db->db_buf))
+ arc_set_callback(db->db_buf, dbuf_do_evict, db);
}
DB_DNODE_EXIT(db);
mutex_destroy(&dr->dt.di.dr_mtx);
dmu_write_policy(os, dn, db->db_level, wp_flag, &zp);
DB_DNODE_EXIT(db);
- if (db->db_level == 0 && dr->dt.dl.dr_override_state == DR_OVERRIDDEN) {
- ASSERT(db->db_state != DB_NOFILL);
+ if (db->db_level == 0 &&
+ dr->dt.dl.dr_override_state == DR_OVERRIDDEN) {
+ /*
+ * The BP for this block has been provided by open context
+ * (by dmu_sync() or dmu_buf_write_embedded()).
+ */
+ void *contents = (data != NULL) ? data->b_data : NULL;
+
dr->dr_zio = zio_write(zio, os->os_spa, txg,
- db->db_blkptr, data->b_data, arc_buf_size(data), &zp,
+ db->db_blkptr, contents, db->db.db_size, &zp,
dbuf_write_override_ready, NULL, dbuf_write_override_done,
dr, ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb);
mutex_enter(&db->db_mtx);
};
int
-dmu_buf_hold(objset_t *os, uint64_t object, uint64_t offset,
- void *tag, dmu_buf_t **dbp, int flags)
+dmu_buf_hold_noread(objset_t *os, uint64_t object, uint64_t offset,
+ void *tag, dmu_buf_t **dbp)
{
dnode_t *dn;
uint64_t blkid;
dmu_buf_impl_t *db;
int err;
- int db_flags = DB_RF_CANFAIL;
-
- if (flags & DMU_READ_NO_PREFETCH)
- db_flags |= DB_RF_NOPREFETCH;
err = dnode_hold(os, object, FTAG, &dn);
if (err)
rw_enter(&dn->dn_struct_rwlock, RW_READER);
db = dbuf_hold(dn, blkid, tag);
rw_exit(&dn->dn_struct_rwlock);
+ dnode_rele(dn, FTAG);
+
if (db == NULL) {
- err = SET_ERROR(EIO);
- } else {
+ *dbp = NULL;
+ return (SET_ERROR(EIO));
+ }
+
+ *dbp = &db->db;
+ return (err);
+}
+
+int
+dmu_buf_hold(objset_t *os, uint64_t object, uint64_t offset,
+ void *tag, dmu_buf_t **dbp, int flags)
+{
+ int err;
+ int db_flags = DB_RF_CANFAIL;
+
+ if (flags & DMU_READ_NO_PREFETCH)
+ db_flags |= DB_RF_NOPREFETCH;
+
+ err = dmu_buf_hold_noread(os, object, offset, tag, dbp);
+ if (err == 0) {
+ dmu_buf_impl_t *db = (dmu_buf_impl_t *)(*dbp);
err = dbuf_read(db, NULL, db_flags);
- if (err) {
+ if (err != 0) {
dbuf_rele(db, tag);
- db = NULL;
+ *dbp = NULL;
}
}
- dnode_rele(dn, FTAG);
- *dbp = &db->db; /* NULL db plus first field offset is NULL */
return (err);
}
dmu_buf_rele_array(dbp, numbufs, FTAG);
}
+void
+dmu_write_embedded(objset_t *os, uint64_t object, uint64_t offset,
+ void *data, uint8_t etype, uint8_t comp, int uncompressed_size,
+ int compressed_size, int byteorder, dmu_tx_t *tx)
+{
+ dmu_buf_t *db;
+
+ ASSERT3U(etype, <, NUM_BP_EMBEDDED_TYPES);
+ ASSERT3U(comp, <, ZIO_COMPRESS_FUNCTIONS);
+ VERIFY0(dmu_buf_hold_noread(os, object, offset,
+ FTAG, &db));
+
+ dmu_buf_write_embedded(db,
+ data, (bp_embedded_type_t)etype, (enum zio_compress)comp,
+ uncompressed_size, compressed_size, byteorder, tx);
+
+ dmu_buf_rele(db, FTAG);
+}
+
/*
* DMU support for xuio
*/
* block size still needs to be known for replay.
*/
BP_SET_LSIZE(bp, db->db_size);
- } else {
+ } else if (!BP_IS_EMBEDDED(bp)) {
ASSERT(BP_GET_LEVEL(bp) == 0);
bp->blk_fill = 1;
}
{
dnode_t *dn;
- /* XXX assumes dnode_hold will not get an i/o error */
- (void) dnode_hold(os, object, FTAG, &dn);
- ASSERT(checksum < ZIO_CHECKSUM_FUNCTIONS);
+ /*
+ * Send streams include each object's checksum function. This
+ * check ensures that the receiving system can understand the
+ * checksum function transmitted.
+ */
+ ASSERT3U(checksum, <, ZIO_CHECKSUM_LEGACY_FUNCTIONS);
+
+ VERIFY0(dnode_hold(os, object, FTAG, &dn));
+ ASSERT3U(checksum, <, ZIO_CHECKSUM_FUNCTIONS);
dn->dn_checksum = checksum;
dnode_setdirty(dn, tx);
dnode_rele(dn, FTAG);
{
dnode_t *dn;
- /* XXX assumes dnode_hold will not get an i/o error */
- (void) dnode_hold(os, object, FTAG, &dn);
- ASSERT(compress < ZIO_COMPRESS_FUNCTIONS);
+ /*
+ * Send streams include each object's compression function. This
+ * check ensures that the receiving system can understand the
+ * compression function transmitted.
+ */
+ ASSERT3U(compress, <, ZIO_COMPRESS_LEGACY_FUNCTIONS);
+
+ VERIFY0(dnode_hold(os, object, FTAG, &dn));
dn->dn_compress = compress;
dnode_setdirty(dn, tx);
dnode_rele(dn, FTAG);
doi->doi_max_offset = (dn->dn_maxblkid + 1) * dn->dn_datablksz;
doi->doi_fill_count = 0;
for (i = 0; i < dnp->dn_nblkptr; i++)
- doi->doi_fill_count += dnp->dn_blkptr[i].blk_fill;
+ doi->doi_fill_count += BP_GET_FILL(&dnp->dn_blkptr[i]);
}
void
* default (fletcher2/off). Snapshots don't need to know about
* checksum/compression/copies.
*/
- if (ds) {
+ if (ds != NULL) {
err = dsl_prop_register(ds,
zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE),
primary_cache_changed_cb, os);
kmem_free(os, sizeof (objset_t));
return (err);
}
- } else if (ds == NULL) {
+ } else {
/* It's the meta-objset. */
os->os_checksum = ZIO_CHECKSUM_FLETCHER_4;
os->os_compress = ZIO_COMPRESS_LZJB;
&os->os_groupused_dnode);
}
- /*
- * We should be the only thread trying to do this because we
- * have ds_opening_lock
- */
- if (ds) {
- mutex_enter(&ds->ds_lock);
- ASSERT(ds->ds_objset == NULL);
- ds->ds_objset = os;
- mutex_exit(&ds->ds_lock);
- }
-
*osp = os;
return (0);
}
int err = 0;
mutex_enter(&ds->ds_opening_lock);
- *osp = ds->ds_objset;
- if (*osp == NULL) {
+ if (ds->ds_objset == NULL) {
+ objset_t *os;
err = dmu_objset_open_impl(dsl_dataset_get_spa(ds),
- ds, dsl_dataset_get_blkptr(ds), osp);
+ ds, dsl_dataset_get_blkptr(ds), &os);
+
+ if (err == 0) {
+ mutex_enter(&ds->ds_lock);
+ ASSERT(ds->ds_objset == NULL);
+ ds->ds_objset = os;
+ mutex_exit(&ds->ds_lock);
+ }
}
+ *osp = ds->ds_objset;
mutex_exit(&ds->ds_opening_lock);
return (err);
}
objset_t *os = arg;
dnode_phys_t *dnp = &os->os_phys->os_meta_dnode;
+ ASSERT(!BP_IS_EMBEDDED(bp));
ASSERT3P(bp, ==, os->os_rootbp);
ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET);
ASSERT0(BP_GET_LEVEL(bp));
*/
bp->blk_fill = 0;
for (i = 0; i < dnp->dn_nblkptr; i++)
- bp->blk_fill += dnp->dn_blkptr[i].blk_fill;
+ bp->blk_fill += BP_GET_FILL(&dnp->dn_blkptr[i]);
}
/* ARGSUSED */
#include <sys/zfs_onexit.h>
#include <sys/dmu_send.h>
#include <sys/dsl_destroy.h>
+#include <sys/blkptr.h>
#include <sys/dsl_bookmark.h>
+#include <sys/zfeature.h>
/* Set this tunable to TRUE to replace corrupt data with 0x2f5baddb10c */
int zfs_send_corrupt_data = B_FALSE;
}
static int
-dump_data(dmu_sendarg_t *dsp, dmu_object_type_t type,
+dump_write(dmu_sendarg_t *dsp, dmu_object_type_t type,
uint64_t object, uint64_t offset, int blksz, const blkptr_t *bp, void *data)
{
struct drr_write *drrw = &(dsp->dsa_drr->drr_u.drr_write);
drrw->drr_offset = offset;
drrw->drr_length = blksz;
drrw->drr_toguid = dsp->dsa_toguid;
- drrw->drr_checksumtype = BP_GET_CHECKSUM(bp);
- if (zio_checksum_table[drrw->drr_checksumtype].ci_dedup)
- drrw->drr_checksumflags |= DRR_CHECKSUM_DEDUP;
- DDK_SET_LSIZE(&drrw->drr_key, BP_GET_LSIZE(bp));
- DDK_SET_PSIZE(&drrw->drr_key, BP_GET_PSIZE(bp));
- DDK_SET_COMPRESS(&drrw->drr_key, BP_GET_COMPRESS(bp));
- drrw->drr_key.ddk_cksum = bp->blk_cksum;
+ if (BP_IS_EMBEDDED(bp)) {
+ /*
+ * There's no pre-computed checksum of embedded BP's, so
+ * (like fletcher4-checkummed blocks) userland will have
+ * to compute a dedup-capable checksum itself.
+ */
+ drrw->drr_checksumtype = ZIO_CHECKSUM_OFF;
+ } else {
+ drrw->drr_checksumtype = BP_GET_CHECKSUM(bp);
+ if (zio_checksum_table[drrw->drr_checksumtype].ci_dedup)
+ drrw->drr_checksumflags |= DRR_CHECKSUM_DEDUP;
+ DDK_SET_LSIZE(&drrw->drr_key, BP_GET_LSIZE(bp));
+ DDK_SET_PSIZE(&drrw->drr_key, BP_GET_PSIZE(bp));
+ DDK_SET_COMPRESS(&drrw->drr_key, BP_GET_COMPRESS(bp));
+ drrw->drr_key.ddk_cksum = bp->blk_cksum;
+ }
if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0)
return (SET_ERROR(EINTR));
return (0);
}
+static int
+dump_write_embedded(dmu_sendarg_t *dsp, uint64_t object, uint64_t offset,
+ int blksz, const blkptr_t *bp)
+{
+ char buf[BPE_PAYLOAD_SIZE];
+ struct drr_write_embedded *drrw =
+ &(dsp->dsa_drr->drr_u.drr_write_embedded);
+
+ if (dsp->dsa_pending_op != PENDING_NONE) {
+ if (dump_bytes(dsp, dsp->dsa_drr,
+ sizeof (dmu_replay_record_t)) != 0)
+ return (EINTR);
+ dsp->dsa_pending_op = PENDING_NONE;
+ }
+
+ ASSERT(BP_IS_EMBEDDED(bp));
+
+ bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
+ dsp->dsa_drr->drr_type = DRR_WRITE_EMBEDDED;
+ drrw->drr_object = object;
+ drrw->drr_offset = offset;
+ drrw->drr_length = blksz;
+ drrw->drr_toguid = dsp->dsa_toguid;
+ drrw->drr_compression = BP_GET_COMPRESS(bp);
+ drrw->drr_etype = BPE_GET_ETYPE(bp);
+ drrw->drr_lsize = BPE_GET_LSIZE(bp);
+ drrw->drr_psize = BPE_GET_PSIZE(bp);
+
+ decode_embedded_bp_compressed(bp, buf);
+
+ if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0)
+ return (EINTR);
+ if (dump_bytes(dsp, buf, P2ROUNDUP(drrw->drr_psize, 8)) != 0)
+ return (EINTR);
+ return (0);
+}
+
static int
dump_spill(dmu_sendarg_t *dsp, uint64_t object, int blksz, void *data)
{
return (0);
}
+static boolean_t
+backup_do_embed(dmu_sendarg_t *dsp, const blkptr_t *bp)
+{
+ if (!BP_IS_EMBEDDED(bp))
+ return (B_FALSE);
+
+ /*
+ * Compression function must be legacy, or explicitly enabled.
+ */
+ if ((BP_GET_COMPRESS(bp) >= ZIO_COMPRESS_LEGACY_FUNCTIONS &&
+ !(dsp->dsa_featureflags & DMU_BACKUP_FEATURE_EMBED_DATA_LZ4)))
+ return (B_FALSE);
+
+ /*
+ * Embed type must be explicitly enabled.
+ */
+ switch (BPE_GET_ETYPE(bp)) {
+ case BP_EMBEDDED_TYPE_DATA:
+ if (dsp->dsa_featureflags & DMU_BACKUP_FEATURE_EMBED_DATA)
+ return (B_TRUE);
+ break;
+ default:
+ return (B_FALSE);
+ }
+ return (B_FALSE);
+}
+
#define BP_SPAN(dnp, level) \
(((uint64_t)dnp->dn_datablkszsec) << (SPA_MINBLOCKSHIFT + \
(level) * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT)))
err = dump_spill(dsp, zb->zb_object, blksz, abuf->b_data);
(void) arc_buf_remove_ref(abuf, &abuf);
+ } else if (backup_do_embed(dsp, bp)) {
+ /* it's an embedded level-0 block of a regular object */
+ int blksz = dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT;
+ err = dump_write_embedded(dsp, zb->zb_object,
+ zb->zb_blkid * blksz, blksz, bp);
} else { /* it's a level-0 block of a regular object */
uint32_t aflags = ARC_WAIT;
arc_buf_t *abuf;
int blksz = BP_GET_LSIZE(bp);
+ ASSERT3U(blksz, ==, dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
ASSERT0(zb->zb_level);
if (arc_read(NULL, spa, bp, arc_getbuf_func, &abuf,
ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL,
}
}
- err = dump_data(dsp, type, zb->zb_object, zb->zb_blkid * blksz,
+ err = dump_write(dsp, type, zb->zb_object, zb->zb_blkid * blksz,
blksz, bp, abuf->b_data);
(void) arc_buf_remove_ref(abuf, &abuf);
}
*/
static int
dmu_send_impl(void *tag, dsl_pool_t *dp, dsl_dataset_t *ds,
- zfs_bookmark_phys_t *fromzb, boolean_t is_clone, int outfd,
- vnode_t *vp, offset_t *off)
+ zfs_bookmark_phys_t *fromzb, boolean_t is_clone, boolean_t embedok,
+ int outfd, vnode_t *vp, offset_t *off)
{
objset_t *os;
dmu_replay_record_t *drr;
dmu_sendarg_t *dsp;
int err;
uint64_t fromtxg = 0;
+ uint64_t featureflags = 0;
err = dmu_objset_from_ds(ds, &os);
if (err != 0) {
return (SET_ERROR(EINVAL));
}
if (version >= ZPL_VERSION_SA) {
- DMU_SET_FEATUREFLAGS(
- drr->drr_u.drr_begin.drr_versioninfo,
- DMU_BACKUP_FEATURE_SA_SPILL);
+ featureflags |= DMU_BACKUP_FEATURE_SA_SPILL;
}
}
#endif
+ if (embedok &&
+ spa_feature_is_active(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA)) {
+ featureflags |= DMU_BACKUP_FEATURE_EMBED_DATA;
+ if (spa_feature_is_active(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS))
+ featureflags |= DMU_BACKUP_FEATURE_EMBED_DATA_LZ4;
+ } else {
+ embedok = B_FALSE;
+ }
+
+ DMU_SET_FEATUREFLAGS(drr->drr_u.drr_begin.drr_versioninfo,
+ featureflags);
+
drr->drr_u.drr_begin.drr_creation_time =
ds->ds_phys->ds_creation_time;
drr->drr_u.drr_begin.drr_type = dmu_objset_type(os);
ZIO_SET_CHECKSUM(&dsp->dsa_zc, 0, 0, 0, 0);
dsp->dsa_pending_op = PENDING_NONE;
dsp->dsa_incremental = (fromzb != NULL);
+ dsp->dsa_featureflags = featureflags;
mutex_enter(&ds->ds_sendstream_lock);
list_insert_head(&ds->ds_sendstreams, dsp);
int
dmu_send_obj(const char *pool, uint64_t tosnap, uint64_t fromsnap,
- int outfd, vnode_t *vp, offset_t *off)
+ boolean_t embedok, int outfd, vnode_t *vp, offset_t *off)
{
dsl_pool_t *dp;
dsl_dataset_t *ds;
zb.zbm_guid = fromds->ds_phys->ds_guid;
is_clone = (fromds->ds_dir != ds->ds_dir);
dsl_dataset_rele(fromds, FTAG);
- err = dmu_send_impl(FTAG, dp, ds, &zb, is_clone,
+ err = dmu_send_impl(FTAG, dp, ds, &zb, is_clone, embedok,
outfd, vp, off);
} else {
- err = dmu_send_impl(FTAG, dp, ds, NULL, B_FALSE,
+ err = dmu_send_impl(FTAG, dp, ds, NULL, B_FALSE, embedok,
outfd, vp, off);
}
dsl_dataset_rele(ds, FTAG);
}
int
-dmu_send(const char *tosnap, const char *fromsnap,
+dmu_send(const char *tosnap, const char *fromsnap, boolean_t embedok,
int outfd, vnode_t *vp, offset_t *off)
{
dsl_pool_t *dp;
dsl_pool_rele(dp, FTAG);
return (err);
}
- err = dmu_send_impl(FTAG, dp, ds, &zb, is_clone,
+ err = dmu_send_impl(FTAG, dp, ds, &zb, is_clone, embedok,
outfd, vp, off);
} else {
- err = dmu_send_impl(FTAG, dp, ds, NULL, B_FALSE,
+ err = dmu_send_impl(FTAG, dp, ds, NULL, B_FALSE, embedok,
outfd, vp, off);
}
if (owned)
uint64_t fromguid = drrb->drr_fromguid;
int flags = drrb->drr_flags;
int error;
+ uint64_t featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo);
dsl_dataset_t *ds;
const char *tofs = drba->drba_cookie->drc_tofs;
return (SET_ERROR(EINVAL));
/* Verify pool version supports SA if SA_SPILL feature set */
- if ((DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo) &
- DMU_BACKUP_FEATURE_SA_SPILL) &&
- spa_version(dp->dp_spa) < SPA_VERSION_SA) {
+ if ((featureflags & DMU_BACKUP_FEATURE_SA_SPILL) &&
+ spa_version(dp->dp_spa) < SPA_VERSION_SA)
+ return (SET_ERROR(ENOTSUP));
+
+ /*
+ * The receiving code doesn't know how to translate a WRITE_EMBEDDED
+ * record to a plan WRITE record, so the pool must have the
+ * EMBEDDED_DATA feature enabled if the stream has WRITE_EMBEDDED
+ * records. Same with WRITE_EMBEDDED records that use LZ4 compression.
+ */
+ if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA) &&
+ !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_EMBEDDED_DATA))
+ return (SET_ERROR(ENOTSUP));
+ if ((featureflags & DMU_BACKUP_FEATURE_EMBED_DATA_LZ4) &&
+ !spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_LZ4_COMPRESS))
return (SET_ERROR(ENOTSUP));
- }
error = dsl_dataset_hold(dp, tofs, FTAG, &ds);
if (error == 0) {
break;
case DRR_OBJECT:
DO64(drr_object.drr_object);
- /* DO64(drr_object.drr_allocation_txg); */
DO32(drr_object.drr_type);
DO32(drr_object.drr_bonustype);
DO32(drr_object.drr_blksz);
DO64(drr_write_byref.drr_key.ddk_cksum.zc_word[3]);
DO64(drr_write_byref.drr_key.ddk_prop);
break;
+ case DRR_WRITE_EMBEDDED:
+ DO64(drr_write_embedded.drr_object);
+ DO64(drr_write_embedded.drr_offset);
+ DO64(drr_write_embedded.drr_length);
+ DO64(drr_write_embedded.drr_toguid);
+ DO32(drr_write_embedded.drr_lsize);
+ DO32(drr_write_embedded.drr_psize);
+ break;
case DRR_FREE:
DO64(drr_free.drr_object);
DO64(drr_free.drr_offset);
int err;
guid_map_entry_t gmesrch;
guid_map_entry_t *gmep;
- avl_index_t where;
+ avl_index_t where;
objset_t *ref_os = NULL;
dmu_buf_t *dbp;
err = dmu_buf_hold(ref_os, drrwbr->drr_refobject,
drrwbr->drr_refoffset, FTAG, &dbp, DMU_READ_PREFETCH);
- if (err)
+ if (err != 0)
return (err);
tx = dmu_tx_create(os);
return (0);
}
+static int
+restore_write_embedded(struct restorearg *ra, objset_t *os,
+ struct drr_write_embedded *drrwnp)
+{
+ dmu_tx_t *tx;
+ int err;
+ void *data;
+
+ if (drrwnp->drr_offset + drrwnp->drr_length < drrwnp->drr_offset)
+ return (EINVAL);
+
+ if (drrwnp->drr_psize > BPE_PAYLOAD_SIZE)
+ return (EINVAL);
+
+ if (drrwnp->drr_etype >= NUM_BP_EMBEDDED_TYPES)
+ return (EINVAL);
+ if (drrwnp->drr_compression >= ZIO_COMPRESS_FUNCTIONS)
+ return (EINVAL);
+
+ data = restore_read(ra, P2ROUNDUP(drrwnp->drr_psize, 8));
+ if (data == NULL)
+ return (ra->err);
+
+ tx = dmu_tx_create(os);
+
+ dmu_tx_hold_write(tx, drrwnp->drr_object,
+ drrwnp->drr_offset, drrwnp->drr_length);
+ err = dmu_tx_assign(tx, TXG_WAIT);
+ if (err != 0) {
+ dmu_tx_abort(tx);
+ return (err);
+ }
+
+ dmu_write_embedded(os, drrwnp->drr_object,
+ drrwnp->drr_offset, data, drrwnp->drr_etype,
+ drrwnp->drr_compression, drrwnp->drr_lsize, drrwnp->drr_psize,
+ ra->byteswap ^ ZFS_HOST_BYTEORDER, tx);
+
+ dmu_tx_commit(tx);
+ return (0);
+}
+
static int
restore_spill(struct restorearg *ra, objset_t *os, struct drr_spill *drrs)
{
ra.err = restore_write_byref(&ra, os, &drrwbr);
break;
}
+ case DRR_WRITE_EMBEDDED:
+ {
+ struct drr_write_embedded drrwe =
+ drr->drr_u.drr_write_embedded;
+ ra.err = restore_write_embedded(&ra, os, &drrwe);
+ break;
+ }
case DRR_FREE:
{
struct drr_free drrf = drr->drr_u.drr_free;
if (pfd->pd_cancel)
return (SET_ERROR(EINTR));
- if (BP_IS_HOLE(bp) ||
+ if (BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp) ||
!((pfd->pd_flags & TRAVERSE_PREFETCH_DATA) ||
BP_GET_TYPE(bp) == DMU_OT_DNODE || BP_GET_LEVEL(bp) > 0) ||
BP_GET_TYPE(bp) == DMU_OT_INTENT_LOG)
*offset = *offset >> span;
for (i = BF64_GET(*offset, 0, epbs);
i >= 0 && i < epb; i += inc) {
- if (bp[i].blk_fill >= minfill &&
- bp[i].blk_fill <= maxfill &&
+ if (BP_GET_FILL(&bp[i]) >= minfill &&
+ BP_GET_FILL(&bp[i]) <= maxfill &&
(hole || bp[i].blk_birth > txg))
break;
if (inc > 0 || *offset > 0)
}
#endif
-#define ALL -1
-
static void
free_children(dmu_buf_impl_t *db, uint64_t blkid, uint64_t nblks,
dmu_tx_t *tx)
dnp->dn_bonustype = dn->dn_bonustype;
dnp->dn_bonuslen = dn->dn_bonuslen;
}
-
ASSERT(dnp->dn_nlevels > 1 ||
BP_IS_HOLE(&dnp->dn_blkptr[0]) ||
+ BP_IS_EMBEDDED(&dnp->dn_blkptr[0]) ||
BP_GET_LSIZE(&dnp->dn_blkptr[0]) ==
dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
+ ASSERT(dnp->dn_nlevels < 2 ||
+ BP_IS_HOLE(&dnp->dn_blkptr[0]) ||
+ BP_GET_LSIZE(&dnp->dn_blkptr[0]) == 1 << dnp->dn_indblkshift);
if (dn->dn_next_type[txgoff] != 0) {
dnp->dn_type = dn->dn_type;
else
*availbytesp = 0;
}
- *usedobjsp = ds->ds_phys->ds_bp.blk_fill;
+ *usedobjsp = BP_GET_FILL(&ds->ds_phys->ds_bp);
*availobjsp = DN_MAX_OBJECT - *usedobjsp;
}
struct killarg *ka = arg;
dmu_tx_t *tx = ka->tx;
- if (BP_IS_HOLE(bp))
+ if (BP_IS_HOLE(bp) || BP_IS_EMBEDDED(bp))
return (0);
if (zb->zb_level == ZB_ZIL_LEVEL) {
uint64_t count;
objset_t *mos;
+ ASSERT(!dsl_dataset_is_snapshot(ds));
if (dsl_dataset_is_snapshot(ds))
return (SET_ERROR(EINVAL));
ds->ds_prev->ds_phys->ds_num_children == 2 &&
ds->ds_prev->ds_userrefs == 0);
- /* Remove our reservation */
+ /* Remove our reservation. */
if (ds->ds_reserved != 0) {
dsl_dataset_set_refreservation_sync_impl(ds,
(ZPROP_SRC_NONE | ZPROP_SRC_LOCAL | ZPROP_SRC_RECEIVED),
}
if (err == ERESTART)
return;
+ /* finished; verify that space accounting went to zero */
+ ASSERT0(dp->dp_free_dir->dd_phys->dd_used_bytes);
+ ASSERT0(dp->dp_free_dir->dd_phys->dd_compressed_bytes);
+ ASSERT0(dp->dp_free_dir->dd_phys->dd_uncompressed_bytes);
}
if (scn->scn_phys.scn_state != DSS_SCANNING)
count_block(dp->dp_blkstats, bp);
+ if (BP_IS_EMBEDDED(bp))
+ return (0);
+
ASSERT(DSL_SCAN_IS_SCRUB_RESILVER(scn));
if (scn->scn_phys.scn_func == POOL_SCAN_SCRUB) {
zio_flags |= ZIO_FLAG_SCRUB;
KM_PUSHPAGE));
error = dsl_sync_task(pool, dsl_dataset_user_release_check,
- dsl_dataset_user_release_sync, &ddura,
- fnvlist_num_pairs(holds));
+ dsl_dataset_user_release_sync, &ddura, 0);
fnvlist_free(ddura.ddura_todelete);
fnvlist_free(ddura.ddura_chkholds);
vdev_t *vd;
ASSERT(!BP_IS_HOLE(bp));
+ ASSERT(!BP_IS_EMBEDDED(bp));
ASSERT(psize > 0);
spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
vdev_t *vd;
ASSERT(!BP_IS_HOLE(bp));
+ ASSERT(!BP_IS_EMBEDDED(bp));
ASSERT(psize > 0);
spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
{
- if (!BP_IS_HOLE(bp)) {
+ if (!BP_IS_HOLE(bp) && !BP_IS_EMBEDDED(bp)) {
zio_t *rio = arg;
size_t size = BP_GET_PSIZE(bp);
void *data = zio_data_buf_alloc(size);
if (spa_feature_is_active(spa, SPA_FEATURE_ENABLED_TXG)) {
if (spa_dir_prop(spa, DMU_POOL_FEATURE_ENABLED_TXG,
- &spa->spa_feat_enabled_txg_obj) != 0) {
+ &spa->spa_feat_enabled_txg_obj) != 0)
return (spa_vdev_err(rvd, VDEV_AUX_CORRUPT_DATA, EIO));
- }
}
spa->spa_is_initializing = B_TRUE;
ASSERT(!locked);
ASSERT(vd == vd->vdev_top);
- /*
- * XXX - Once we have bp-rewrite this should
- * become the common case.
- */
-
mg = vd->vdev_mg;
/*
* possible.
*/
ASSERT(SPA_VERSION_IS_SUPPORTED(spa->spa_uberblock.ub_version));
- ASSERT(version >= spa->spa_uberblock.ub_version);
+ ASSERT3U(version, >=, spa->spa_uberblock.ub_version);
spa->spa_uberblock.ub_version = version;
vdev_config_dirty(spa->spa_root_vdev);
(void) strlcpy(type, dmu_ot[BP_GET_TYPE(bp)].ot_name,
sizeof (type));
}
- checksum = zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name;
+ if (!BP_IS_EMBEDDED(bp)) {
+ checksum =
+ zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name;
+ }
compress = zio_compress_table[BP_GET_COMPRESS(bp)].ci_name;
}
uint64_t dsize = 0;
int d;
- for (d = 0; d < SPA_DVAS_PER_BP; d++)
+ for (d = 0; d < BP_GET_NDVAS(bp); d++)
dsize += dva_get_dsize_sync(spa, &bp->blk_dva[d]);
return (dsize);
spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
- for (d = 0; d < SPA_DVAS_PER_BP; d++)
+ for (d = 0; d < BP_GET_NDVAS(bp); d++)
dsize += dva_get_dsize_sync(spa, &bp->blk_dva[d]);
spa_config_exit(spa, SCL_VDEV, FTAG);
"\"zfs bookmark\" command",
B_TRUE, B_FALSE, B_FALSE, bookmarks_deps);
}
+
+ zfeature_register(SPA_FEATURE_EMBEDDED_DATA,
+ "com.delphix:embedded_data", "embedded_data",
+ "Blocks which compress very well use even less space.",
+ B_FALSE, B_TRUE, B_TRUE, NULL);
}
* zc_fromobj objsetid of incremental fromsnap (may be zero)
* zc_guid if set, estimate size of stream only. zc_cookie is ignored.
* output size in zc_objset_type.
+ * zc_flags if =1, WRITE_EMBEDDED records are permitted
*
* outputs:
* zc_objset_type estimated size, if zc_guid is set
int error;
offset_t off;
boolean_t estimate = (zc->zc_guid != 0);
+ boolean_t embedok = (zc->zc_flags & 0x1);
if (zc->zc_obj != 0) {
dsl_pool_t *dp;
off = fp->f_offset;
error = dmu_send_obj(zc->zc_name, zc->zc_sendobj,
- zc->zc_fromobj, zc->zc_cookie, fp->f_vnode, &off);
+ zc->zc_fromobj, embedok, zc->zc_cookie, fp->f_vnode, &off);
if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
fp->f_offset = off;
* innvl: {
* "fd" -> file descriptor to write stream to (int32)
* (optional) "fromsnap" -> full snap name to send an incremental from
+ * (optional) "embedok" -> (value ignored)
+ * presence indicates DRR_WRITE_EMBEDDED records are permitted
* }
*
* outnvl is unused
char *fromname = NULL;
int fd;
file_t *fp;
+ boolean_t embedok;
error = nvlist_lookup_int32(innvl, "fd", &fd);
if (error != 0)
(void) nvlist_lookup_string(innvl, "fromsnap", &fromname);
+ embedok = nvlist_exists(innvl, "embedok");
+
if ((fp = getf(fd)) == NULL)
return (SET_ERROR(EBADF));
off = fp->f_offset;
- error = dmu_send(snapname, fromname, fd, fp->f_vnode, &off);
+ error = dmu_send(snapname, fromname, embedok, fd, fp->f_vnode, &off);
if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
fp->f_offset = off;
zil_bp_tree_add(zilog_t *zilog, const blkptr_t *bp)
{
avl_tree_t *t = &zilog->zl_bp_tree;
- const dva_t *dva = BP_IDENTITY(bp);
+ const dva_t *dva;
zil_bp_node_t *zn;
avl_index_t where;
+ if (BP_IS_EMBEDDED(bp))
+ return (0);
+
+ dva = BP_IDENTITY(bp);
+
if (avl_find(t, dva, &where) != NULL)
return (SET_ERROR(EEXIST));
ASSERT(BP_GET_BYTEORDER(zio->io_bp) == ZFS_HOST_BYTEORDER);
ASSERT(!BP_IS_GANG(zio->io_bp));
ASSERT(!BP_IS_HOLE(zio->io_bp));
- ASSERT(zio->io_bp->blk_fill == 0);
+ ASSERT(BP_GET_FILL(zio->io_bp) == 0);
/*
* Ensure the lwb buffer pointer is cleared before releasing
#include <sys/dmu_objset.h>
#include <sys/arc.h>
#include <sys/ddt.h>
+#include <sys/blkptr.h>
#include <sys/zfeature.h>
/*
{
size_t c = (size - 1) >> SPA_MINBLOCKSHIFT;
- ASSERT(c < SPA_MAXBLOCKSIZE >> SPA_MINBLOCKSHIFT);
+ ASSERT3U(c, <, SPA_MAXBLOCKSIZE >> SPA_MINBLOCKSHIFT);
return (kmem_cache_alloc(zio_buf_cache[c], KM_PUSHPAGE | KM_NODEBUG));
}
zio->io_physdone = physdone;
zio->io_prop = *zp;
+ /*
+ * Data can be NULL if we are going to call zio_write_override() to
+ * provide the already-allocated BP. But we may need the data to
+ * verify a dedup hit (if requested). In this case, don't try to
+ * dedup (just take the already-allocated BP verbatim).
+ */
+ if (data == NULL && zio->io_prop.zp_dedup_verify) {
+ zio->io_prop.zp_dedup = zio->io_prop.zp_dedup_verify = B_FALSE;
+ }
+
return (zio);
}
void
zio_free(spa_t *spa, uint64_t txg, const blkptr_t *bp)
{
+
+ /*
+ * The check for EMBEDDED is a performance optimization. We
+ * process the free here (by ignoring it) rather than
+ * putting it on the list and then processing it in zio_free_sync().
+ */
+ if (BP_IS_EMBEDDED(bp))
+ return;
metaslab_check_free(spa, bp);
/*
zio_t *zio;
enum zio_stage stage = ZIO_FREE_PIPELINE;
- dprintf_bp(bp, "freeing in txg %llu, pass %u",
- (longlong_t)txg, spa->spa_sync_pass);
-
ASSERT(!BP_IS_HOLE(bp));
ASSERT(spa_syncing_txg(spa) == txg);
ASSERT(spa_sync_pass(spa) < zfs_sync_pass_deferred_free);
+ if (BP_IS_EMBEDDED(bp))
+ return (zio_null(pio, spa, NULL, NULL, NULL, 0));
+
metaslab_check_free(spa, bp);
arc_freed(spa, bp);
{
zio_t *zio;
+ dprintf_bp(bp, "claiming in txg %llu", txg);
+
+ if (BP_IS_EMBEDDED(bp))
+ return (zio_null(pio, spa, NULL, NULL, NULL, 0));
+
/*
* A claim is an allocation of a specific block. Claims are needed
* to support immediate writes in the intent log. The issue is that
if (BP_GET_COMPRESS(bp) != ZIO_COMPRESS_OFF &&
zio->io_child_type == ZIO_CHILD_LOGICAL &&
!(zio->io_flags & ZIO_FLAG_RAW)) {
- uint64_t psize = BP_GET_PSIZE(bp);
+ uint64_t psize =
+ BP_IS_EMBEDDED(bp) ? BPE_GET_PSIZE(bp) : BP_GET_PSIZE(bp);
void *cbuf = zio_buf_alloc(psize);
zio_push_transform(zio, cbuf, psize, psize, zio_decompress);
}
+ if (BP_IS_EMBEDDED(bp) && BPE_GET_ETYPE(bp) == BP_EMBEDDED_TYPE_DATA) {
+ zio->io_pipeline = ZIO_INTERLOCK_PIPELINE;
+ decode_embedded_bp_compressed(bp, zio->io_data);
+ } else {
+ ASSERT(!BP_IS_EMBEDDED(bp));
+ }
+
if (!DMU_OT_IS_METADATA(BP_GET_TYPE(bp)) && BP_GET_LEVEL(bp) == 0)
zio->io_flags |= ZIO_FLAG_DONT_CACHE;
*bp = *zio->io_bp_override;
zio->io_pipeline = ZIO_INTERLOCK_PIPELINE;
+ if (BP_IS_EMBEDDED(bp))
+ return (ZIO_PIPELINE_CONTINUE);
+
/*
* If we've been overridden and nopwrite is set then
* set the flag accordingly to indicate that a nopwrite
compress = ZIO_COMPRESS_OFF;
/* Make sure someone doesn't change their mind on overwrites */
- ASSERT(MIN(zp->zp_copies + BP_IS_GANG(bp),
+ ASSERT(BP_IS_EMBEDDED(bp) || MIN(zp->zp_copies + BP_IS_GANG(bp),
spa_max_replication(spa)) == BP_GET_NDVAS(bp));
}
if (psize == 0 || psize == lsize) {
compress = ZIO_COMPRESS_OFF;
zio_buf_free(cbuf, lsize);
+ } else if (!zp->zp_dedup && psize <= BPE_PAYLOAD_SIZE &&
+ zp->zp_level == 0 && !DMU_OT_HAS_FILL(zp->zp_type) &&
+ spa_feature_is_enabled(spa, SPA_FEATURE_EMBEDDED_DATA)) {
+ encode_embedded_bp_compressed(bp,
+ cbuf, compress, lsize, psize);
+ BPE_SET_ETYPE(bp, BP_EMBEDDED_TYPE_DATA);
+ BP_SET_TYPE(bp, zio->io_prop.zp_type);
+ BP_SET_LEVEL(bp, zio->io_prop.zp_level);
+ zio_buf_free(cbuf, lsize);
+ bp->blk_birth = zio->io_txg;
+ zio->io_pipeline = ZIO_INTERLOCK_PIPELINE;
+ ASSERT(spa_feature_is_active(spa,
+ SPA_FEATURE_EMBEDDED_DATA));
+ return (ZIO_PIPELINE_CONTINUE);
} else {
- ASSERT(psize < lsize);
- zio_push_transform(zio, cbuf, psize, lsize, NULL);
+ /*
+ * Round up compressed size to MINBLOCKSIZE and
+ * zero the tail.
+ */
+ size_t rounded =
+ P2ROUNDUP(psize, (size_t)SPA_MINBLOCKSIZE);
+ if (rounded > psize) {
+ bzero((char *)cbuf + psize, rounded - psize);
+ psize = rounded;
+ }
+ if (psize == lsize) {
+ compress = ZIO_COMPRESS_OFF;
+ zio_buf_free(cbuf, lsize);
+ } else {
+ zio_push_transform(zio, cbuf,
+ psize, lsize, NULL);
+ }
}
}
/*
* ==========================================================================
* Error rank. Error are ranked in the order 0, ENXIO, ECKSUM, EIO, other.
- * An error of 0 indictes success. ENXIO indicates whole-device failure,
+ * An error of 0 indicates success. ENXIO indicates whole-device failure,
* which may be transient (e.g. unplugged) or permament. ECKSUM and EIO
* indicate errors that are specific to one I/O, and most likely permanent.
* Any other error is presumed to be worse because we weren't expecting it.
for (w = 0; w < ZIO_WAIT_TYPES; w++)
ASSERT(zio->io_children[c][w] == 0);
- if (zio->io_bp != NULL) {
+ if (zio->io_bp != NULL && !BP_IS_EMBEDDED(zio->io_bp)) {
ASSERT(zio->io_bp->blk_pad[0] == 0);
ASSERT(zio->io_bp->blk_pad[1] == 0);
ASSERT(bcmp(zio->io_bp, &zio->io_bp_copy,
}
if (zio->io_flags & ZIO_FLAG_FASTWRITE && zio->io_bp &&
- !BP_IS_HOLE(zio->io_bp) && !(zio->io_flags & ZIO_FLAG_NOPWRITE)) {
+ !BP_IS_HOLE(zio->io_bp) && !BP_IS_EMBEDDED(zio->io_bp) &&
+ !(zio->io_flags & ZIO_FLAG_NOPWRITE)) {
metaslab_fastwrite_unmark(zio->io_spa, zio->io_bp);
}
static void
zio_checksum_gang_verifier(zio_cksum_t *zcp, blkptr_t *bp)
{
- dva_t *dva = BP_IDENTITY(bp);
+ const dva_t *dva = BP_IDENTITY(bp);
uint64_t txg = BP_PHYSICAL_BIRTH(bp);
ASSERT(BP_IS_GANG(bp));
zio_compress_data(enum zio_compress c, void *src, void *dst, size_t s_len)
{
uint64_t *word, *word_end;
- size_t c_len, d_len, r_len;
+ size_t c_len, d_len;
zio_compress_info_t *ci = &zio_compress_table[c];
ASSERT((uint_t)c < ZIO_COMPRESS_FUNCTIONS);
return (s_len);
/* Compress at least 12.5% */
- d_len = P2ALIGN(s_len - (s_len >> 3), (size_t)SPA_MINBLOCKSIZE);
- if (d_len == 0)
- return (s_len);
-
+ d_len = s_len - (s_len >> 3);
c_len = ci->ci_compress(src, dst, s_len, d_len, ci->ci_level);
if (c_len > d_len)
return (s_len);
- /*
- * Cool. We compressed at least as much as we were hoping to.
- * For both security and repeatability, pad out the last sector.
- */
- r_len = P2ROUNDUP(c_len, (size_t)SPA_MINBLOCKSIZE);
- if (r_len > c_len) {
- bzero((char *)dst + c_len, r_len - c_len);
- c_len = r_len;
- }
-
ASSERT3U(c_len, <=, d_len);
- ASSERT(P2PHASE(c_len, (size_t)SPA_MINBLOCKSIZE) == 0);
-
return (c_len);
}
projects / zfs / commitdiff