Exemple #1
0
/* ARGSUSED */
static int
dsl_scan_zil_block(zilog_t *zilog, blkptr_t *bp, void *arg, uint64_t claim_txg)
{
	zil_scan_arg_t *zsa = arg;
	dsl_pool_t *dp = zsa->zsa_dp;
	dsl_scan_t *scn = dp->dp_scan;
	zil_header_t *zh = zsa->zsa_zh;
	zbookmark_t zb;

	if (bp->blk_birth <= scn->scn_phys.scn_cur_min_txg)
		return (0);

	/*
	 * One block ("stubby") can be allocated a long time ago; we
	 * want to visit that one because it has been allocated
	 * (on-disk) even if it hasn't been claimed (even though for
	 * scrub there's nothing to do to it).
	 */
	if (claim_txg == 0 && bp->blk_birth >= spa_first_txg(dp->dp_spa))
		return (0);

	SET_BOOKMARK(&zb, zh->zh_log.blk_cksum.zc_word[ZIL_ZC_OBJSET],
	    ZB_ZIL_OBJECT, ZB_ZIL_LEVEL, bp->blk_cksum.zc_word[ZIL_ZC_SEQ]);

	VERIFY(0 == scan_funcs[scn->scn_phys.scn_func](dp, bp, &zb));
	return (0);
}
Exemple #2
0
/*
 * Return nonzero on i/o error.
 * Return new buf to write out in *bufp.
 */
static int
dsl_scan_recurse(dsl_scan_t *scn, dsl_dataset_t *ds, dmu_objset_type_t ostype,
    dnode_phys_t *dnp, const blkptr_t *bp,
    const zbookmark_t *zb, dmu_tx_t *tx, arc_buf_t **bufp)
{
	dsl_pool_t *dp = scn->scn_dp;
	int zio_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCAN_THREAD;
	int err;

	if (BP_GET_LEVEL(bp) > 0) {
		uint32_t flags = ARC_WAIT;
		int i;
		blkptr_t *cbp;
		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;

		err = arc_read(NULL, dp->dp_spa, bp, arc_getbuf_func, bufp,
		    ZIO_PRIORITY_ASYNC_READ, zio_flags, &flags, zb);
		if (err) {
			scn->scn_phys.scn_errors++;
			return (err);
		}
		for (i = 0, cbp = (*bufp)->b_data; i < epb; i++, cbp++) {
			dsl_scan_prefetch(scn, *bufp, cbp, zb->zb_objset,
			    zb->zb_object, zb->zb_blkid * epb + i);
		}
		for (i = 0, cbp = (*bufp)->b_data; i < epb; i++, cbp++) {
			zbookmark_t czb;

			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
			    zb->zb_level - 1,
			    zb->zb_blkid * epb + i);
			dsl_scan_visitbp(cbp, &czb, dnp,
			    *bufp, ds, scn, ostype, tx);
		}
	} else if (BP_GET_TYPE(bp) == DMU_OT_USERGROUP_USED) {
Exemple #3
0
/* ARGSUSED */
static int
dsl_scan_zil_record(zilog_t *zilog, lr_t *lrc, void *arg, uint64_t claim_txg)
{
	if (lrc->lrc_txtype == TX_WRITE) {
		zil_scan_arg_t *zsa = arg;
		dsl_pool_t *dp = zsa->zsa_dp;
		dsl_scan_t *scn = dp->dp_scan;
		zil_header_t *zh = zsa->zsa_zh;
		lr_write_t *lr = (lr_write_t *)lrc;
		blkptr_t *bp = &lr->lr_blkptr;
		zbookmark_t zb;

		if (bp->blk_birth <= scn->scn_phys.scn_cur_min_txg)
			return (0);

		/*
		 * birth can be < claim_txg if this record's txg is
		 * already txg sync'ed (but this log block contains
		 * other records that are not synced)
		 */
		if (claim_txg == 0 || bp->blk_birth < claim_txg)
			return (0);

		SET_BOOKMARK(&zb, zh->zh_log.blk_cksum.zc_word[ZIL_ZC_OBJSET],
		    lr->lr_foid, ZB_ZIL_LEVEL,
		    lr->lr_offset / BP_GET_LSIZE(bp));

		VERIFY(0 == scan_funcs[scn->scn_phys.scn_func](dp, bp, &zb));
	}
	return (0);
}
Exemple #4
0
static int
traverse_zil_block(zilog_t *zilog, blkptr_t *bp, void *arg, uint64_t claim_txg)
{
	traverse_data_t *td = arg;
	zbookmark_t zb;

	if (bp->blk_birth == 0)
		return (0);

	if (claim_txg == 0 && bp->blk_birth >= spa_first_txg(td->td_spa))
		return (0);

	SET_BOOKMARK(&zb, td->td_objset, ZB_ZIL_OBJECT, ZB_ZIL_LEVEL,
	    bp->blk_cksum.zc_word[ZIL_ZC_SEQ]);

	(void) td->td_func(td->td_spa, zilog, bp, NULL, &zb, NULL, td->td_arg);

	return (0);
}
Exemple #5
0
/* ARGSUSED */
static void
dsl_scan_prefetch(dsl_scan_t *scn, arc_buf_t *buf, blkptr_t *bp,
    uint64_t objset, uint64_t object, uint64_t blkid)
{
	zbookmark_t czb;
	uint32_t flags = ARC_NOWAIT | ARC_PREFETCH;

	if (zfs_no_scrub_prefetch)
		return;

	if (BP_IS_HOLE(bp) || bp->blk_birth <= scn->scn_phys.scn_min_txg ||
	    (BP_GET_LEVEL(bp) == 0 && BP_GET_TYPE(bp) != DMU_OT_DNODE))
		return;

	SET_BOOKMARK(&czb, objset, object, BP_GET_LEVEL(bp), blkid);

	(void) arc_read(scn->scn_zio_root, scn->scn_dp->dp_spa, bp,
	    NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
	    ZIO_FLAG_CANFAIL | ZIO_FLAG_SCAN_THREAD, &flags, &czb);
}
Exemple #6
0
static int
traverse_zil_record(zilog_t *zilog, lr_t *lrc, void *arg, uint64_t claim_txg)
{
	traverse_data_t *td = arg;

	if (lrc->lrc_txtype == TX_WRITE) {
		lr_write_t *lr = (lr_write_t *)lrc;
		blkptr_t *bp = &lr->lr_blkptr;
		zbookmark_t zb;

		if (bp->blk_birth == 0)
			return (0);

		if (claim_txg == 0 || bp->blk_birth < claim_txg)
			return (0);

		SET_BOOKMARK(&zb, td->td_objset, lr->lr_foid,
		    ZB_ZIL_LEVEL, lr->lr_offset / BP_GET_LSIZE(bp));

		(void) td->td_func(td->td_spa, zilog, bp, NULL, &zb, NULL,
		    td->td_arg);
	}
	return (0);
}
Exemple #7
0
int
dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
    objset_t **osp)
{
	objset_t *os;
	int i, err;

	ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock));

	os = kmem_zalloc(sizeof (objset_t), KM_SLEEP);
	os->os_dsl_dataset = ds;
	os->os_spa = spa;
	os->os_rootbp = bp;
	if (!BP_IS_HOLE(os->os_rootbp)) {
		arc_flags_t aflags = ARC_FLAG_WAIT;
		zbookmark_phys_t zb;
		SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET,
		    ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);

		if (DMU_OS_IS_L2CACHEABLE(os))
			aflags |= ARC_FLAG_L2CACHE;
		if (DMU_OS_IS_L2COMPRESSIBLE(os))
			aflags |= ARC_FLAG_L2COMPRESS;

		dprintf_bp(os->os_rootbp, "reading %s", "");
		err = arc_read(NULL, spa, os->os_rootbp,
		    arc_getbuf_func, &os->os_phys_buf,
		    ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb);
		if (err != 0) {
			kmem_free(os, sizeof (objset_t));
			/* convert checksum errors into IO errors */
			if (err == ECKSUM)
				err = SET_ERROR(EIO);
			return (err);
		}

		/* Increase the blocksize if we are permitted. */
		if (spa_version(spa) >= SPA_VERSION_USERSPACE &&
		    arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) {
			arc_buf_t *buf = arc_buf_alloc(spa,
			    sizeof (objset_phys_t), &os->os_phys_buf,
			    ARC_BUFC_METADATA);
			bzero(buf->b_data, sizeof (objset_phys_t));
			bcopy(os->os_phys_buf->b_data, buf->b_data,
			    arc_buf_size(os->os_phys_buf));
			(void) arc_buf_remove_ref(os->os_phys_buf,
			    &os->os_phys_buf);
			os->os_phys_buf = buf;
		}

		os->os_phys = os->os_phys_buf->b_data;
		os->os_flags = os->os_phys->os_flags;
	} else {
		int size = spa_version(spa) >= SPA_VERSION_USERSPACE ?
		    sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE;
		os->os_phys_buf = arc_buf_alloc(spa, size,
		    &os->os_phys_buf, ARC_BUFC_METADATA);
		os->os_phys = os->os_phys_buf->b_data;
		bzero(os->os_phys, size);
	}

	/*
	 * Note: the changed_cb will be called once before the register
	 * func returns, thus changing the checksum/compression from the
	 * default (fletcher2/off).  Snapshots don't need to know about
	 * checksum/compression/copies.
	 */
	if (ds != NULL) {
		err = dsl_prop_register(ds,
		    zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE),
		    primary_cache_changed_cb, os);
		if (err == 0) {
			err = dsl_prop_register(ds,
			    zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE),
			    secondary_cache_changed_cb, os);
		}
		if (!ds->ds_is_snapshot) {
			if (err == 0) {
				err = dsl_prop_register(ds,
				    zfs_prop_to_name(ZFS_PROP_CHECKSUM),
				    checksum_changed_cb, os);
			}
			if (err == 0) {
				err = dsl_prop_register(ds,
				    zfs_prop_to_name(ZFS_PROP_COMPRESSION),
				    compression_changed_cb, os);
			}
			if (err == 0) {
				err = dsl_prop_register(ds,
				    zfs_prop_to_name(ZFS_PROP_COPIES),
				    copies_changed_cb, os);
			}
			if (err == 0) {
				err = dsl_prop_register(ds,
				    zfs_prop_to_name(ZFS_PROP_DEDUP),
				    dedup_changed_cb, os);
			}
			if (err == 0) {
				err = dsl_prop_register(ds,
				    zfs_prop_to_name(ZFS_PROP_LOGBIAS),
				    logbias_changed_cb, os);
			}
			if (err == 0) {
				err = dsl_prop_register(ds,
				    zfs_prop_to_name(ZFS_PROP_SYNC),
				    sync_changed_cb, os);
			}
			if (err == 0) {
				err = dsl_prop_register(ds,
				    zfs_prop_to_name(
				    ZFS_PROP_REDUNDANT_METADATA),
				    redundant_metadata_changed_cb, os);
			}
			if (err == 0) {
				err = dsl_prop_register(ds,
				    zfs_prop_to_name(ZFS_PROP_RECORDSIZE),
				    recordsize_changed_cb, os);
			}
		}
		if (err != 0) {
			VERIFY(arc_buf_remove_ref(os->os_phys_buf,
			    &os->os_phys_buf));
			kmem_free(os, sizeof (objset_t));
			return (err);
		}
	} else {
		/* It's the meta-objset. */
		os->os_checksum = ZIO_CHECKSUM_FLETCHER_4;
		os->os_compress = ZIO_COMPRESS_ON;
		os->os_copies = spa_max_replication(spa);
		os->os_dedup_checksum = ZIO_CHECKSUM_OFF;
		os->os_dedup_verify = B_FALSE;
		os->os_logbias = ZFS_LOGBIAS_LATENCY;
		os->os_sync = ZFS_SYNC_STANDARD;
		os->os_primary_cache = ZFS_CACHE_ALL;
		os->os_secondary_cache = ZFS_CACHE_ALL;
	}

	if (ds == NULL || !ds->ds_is_snapshot)
		os->os_zil_header = os->os_phys->os_zil_header;
	os->os_zil = zil_alloc(os, &os->os_zil_header);

	for (i = 0; i < TXG_SIZE; i++) {
		list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t),
		    offsetof(dnode_t, dn_dirty_link[i]));
		list_create(&os->os_free_dnodes[i], sizeof (dnode_t),
		    offsetof(dnode_t, dn_dirty_link[i]));
	}
	list_create(&os->os_dnodes, sizeof (dnode_t),
	    offsetof(dnode_t, dn_link));
	list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t),
	    offsetof(dmu_buf_impl_t, db_link));

	mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL);
	mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL);
	mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL);

	dnode_special_open(os, &os->os_phys->os_meta_dnode,
	    DMU_META_DNODE_OBJECT, &os->os_meta_dnode);
	if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) {
		dnode_special_open(os, &os->os_phys->os_userused_dnode,
		    DMU_USERUSED_OBJECT, &os->os_userused_dnode);
		dnode_special_open(os, &os->os_phys->os_groupused_dnode,
		    DMU_GROUPUSED_OBJECT, &os->os_groupused_dnode);
	}

	*osp = os;
	return (0);
}
int
dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
    objset_t **osp)
{
	objset_t *os;
	int i, err = 0;

	ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock));

	os = kmem_zalloc(sizeof (objset_t), KM_PUSHPAGE);
	os->os_dsl_dataset = ds;
	os->os_spa = spa;
	os->os_rootbp = bp;
	if (!BP_IS_HOLE(os->os_rootbp)) {
		uint32_t aflags = ARC_WAIT;
		zbookmark_t zb;
		SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET,
		    ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);

		if (DMU_OS_IS_L2CACHEABLE(os))
			aflags |= ARC_L2CACHE;

		dprintf_bp(os->os_rootbp, "reading %s", "");
		/*
		 * XXX when bprewrite scrub can change the bp,
		 * and this is called from dmu_objset_open_ds_os, the bp
		 * could change, and we'll need a lock.
		 */
		err = dsl_read_nolock(NULL, spa, os->os_rootbp,
		    arc_getbuf_func, &os->os_phys_buf,
		    ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb);
		if (err) {
			kmem_free(os, sizeof (objset_t));
			/* convert checksum errors into IO errors */
			if (err == ECKSUM)
				err = EIO;
			return (err);
		}

		/* Increase the blocksize if we are permitted. */
		if (spa_version(spa) >= SPA_VERSION_USERSPACE &&
		    arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) {
			arc_buf_t *buf = arc_buf_alloc(spa,
			    sizeof (objset_phys_t), &os->os_phys_buf,
			    ARC_BUFC_METADATA);
			bzero(buf->b_data, sizeof (objset_phys_t));
			bcopy(os->os_phys_buf->b_data, buf->b_data,
			    arc_buf_size(os->os_phys_buf));
			(void) arc_buf_remove_ref(os->os_phys_buf,
			    &os->os_phys_buf);
			os->os_phys_buf = buf;
		}

		os->os_phys = os->os_phys_buf->b_data;
		os->os_flags = os->os_phys->os_flags;
	} else {
		int size = spa_version(spa) >= SPA_VERSION_USERSPACE ?
		    sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE;
		os->os_phys_buf = arc_buf_alloc(spa, size,
		    &os->os_phys_buf, ARC_BUFC_METADATA);
		os->os_phys = os->os_phys_buf->b_data;
		bzero(os->os_phys, size);
	}

	/*
	 * Note: the changed_cb will be called once before the register
	 * func returns, thus changing the checksum/compression from the
	 * default (fletcher2/off).  Snapshots don't need to know about
	 * checksum/compression/copies.  But they do need to know about
	 * encryption so that clones from the snaphost inherit the
	 * same encryption property regardless of where in the namespace
	 * they get created.
	 */
	if (ds) {
		err = dsl_prop_register(ds, "primarycache",
		    primary_cache_changed_cb, os);
		if (err == 0)
			err = dsl_prop_register(ds, "secondarycache",
                                    secondary_cache_changed_cb, os);
		if (err == 0)
		  err = dsl_prop_register(ds, "encryption",
					  crypt_changed_cb, os);

		if (!dsl_dataset_is_snapshot(ds)) {
			if (err == 0)
				err = dsl_prop_register(ds, "checksum",
				    checksum_changed_cb, os);
			if (err == 0)
				err = dsl_prop_register(ds, "compression",
				    compression_changed_cb, os);
			if (err == 0)
				err = dsl_prop_register(ds, "copies",
				    copies_changed_cb, os);
			if (err == 0)
				err = dsl_prop_register(ds, "dedup",
				    dedup_changed_cb, os);
			if (err == 0)
				err = dsl_prop_register(ds, "logbias",
				    logbias_changed_cb, os);
			if (err == 0)
				err = dsl_prop_register(ds, "sync",
				    sync_changed_cb, os);
		}
		if (err) {
			VERIFY(arc_buf_remove_ref(os->os_phys_buf,
			    &os->os_phys_buf) == 1);
			kmem_free(os, sizeof (objset_t));
			return (err);
		}
	} else if (ds == NULL) {
        /*
         * It's the meta-objset.
         * Encryption is off for ZFS metadata but on for ZPL metadata
         * and file/zvol contents.
         */
		os->os_checksum = ZIO_CHECKSUM_FLETCHER_4;
		os->os_compress = ZIO_COMPRESS_LZJB;
		os->os_copies = spa_max_replication(spa);
		os->os_dedup_checksum = ZIO_CHECKSUM_OFF;
		os->os_dedup_verify = 0;
		os->os_logbias = 0;
		os->os_sync = 0;
		os->os_primary_cache = ZFS_CACHE_ALL;
		os->os_secondary_cache = ZFS_CACHE_ALL;
        os->os_crypt = ZIO_CRYPT_OFF;
	}

	if (ds == NULL || !dsl_dataset_is_snapshot(ds))
		os->os_zil_header = os->os_phys->os_zil_header;
	os->os_zil = zil_alloc(os, &os->os_zil_header);

	for (i = 0; i < TXG_SIZE; i++) {
		list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t),
		    offsetof(dnode_t, dn_dirty_link[i]));
		list_create(&os->os_free_dnodes[i], sizeof (dnode_t),
		    offsetof(dnode_t, dn_dirty_link[i]));
	}
	list_create(&os->os_dnodes, sizeof (dnode_t),
	    offsetof(dnode_t, dn_link));
	list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t),
	    offsetof(dmu_buf_impl_t, db_link));

	mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL);
	mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL);
	mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL);

	DMU_META_DNODE(os) = dnode_special_open(os,
	    &os->os_phys->os_meta_dnode, DMU_META_DNODE_OBJECT,
	    &os->os_meta_dnode);
	if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) {
		DMU_USERUSED_DNODE(os) = dnode_special_open(os,
		    &os->os_phys->os_userused_dnode, DMU_USERUSED_OBJECT,
		    &os->os_userused_dnode);
		DMU_GROUPUSED_DNODE(os) = dnode_special_open(os,
		    &os->os_phys->os_groupused_dnode, DMU_GROUPUSED_OBJECT,
		    &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);
}
Exemple #9
0
/* called from dsl */
void
dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx)
{
	int txgoff;
	zbookmark_t zb;
	zio_prop_t zp;
	zio_t *zio;
	list_t *list;
	list_t *newlist = NULL;
	dbuf_dirty_record_t *dr;

	dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg);

	ASSERT(dmu_tx_is_syncing(tx));
	/* XXX the write_done callback should really give us the tx... */
	os->os_synctx = tx;

	if (os->os_dsl_dataset == NULL) {
		/*
		 * This is the MOS.  If we have upgraded,
		 * spa_max_replication() could change, so reset
		 * os_copies here.
		 */
		os->os_copies = spa_max_replication(os->os_spa);
	}

	/*
	 * Create the root block IO
	 */
	SET_BOOKMARK(&zb, os->os_dsl_dataset ?
	    os->os_dsl_dataset->ds_object : DMU_META_OBJSET,
	    ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
	arc_release(os->os_phys_buf, &os->os_phys_buf);

	dmu_write_policy(os, NULL, 0, 0, &zp);

	zio = arc_write(pio, os->os_spa, tx->tx_txg,
	    os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), &zp,
	    dmu_objset_write_ready, dmu_objset_write_done, os,
	    ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb);

	/*
	 * Sync special dnodes - the parent IO for the sync is the root block
	 */
	DMU_META_DNODE(os)->dn_zio = zio;
	dnode_sync(DMU_META_DNODE(os), tx);

	os->os_phys->os_flags = os->os_flags;

	if (DMU_USERUSED_DNODE(os) &&
	    DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) {
		DMU_USERUSED_DNODE(os)->dn_zio = zio;
		dnode_sync(DMU_USERUSED_DNODE(os), tx);
		DMU_GROUPUSED_DNODE(os)->dn_zio = zio;
		dnode_sync(DMU_GROUPUSED_DNODE(os), tx);
	}

	txgoff = tx->tx_txg & TXG_MASK;

	if (dmu_objset_userused_enabled(os)) {
		newlist = &os->os_synced_dnodes;
		/*
		 * We must create the list here because it uses the
		 * dn_dirty_link[] of this txg.
		 */
		list_create(newlist, sizeof (dnode_t),
		    offsetof(dnode_t, dn_dirty_link[txgoff]));
	}

	dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx);
	dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx);

	list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff];
	while (dr = list_head(list)) {
		ASSERT0(dr->dr_dbuf->db_level);
		list_remove(list, dr);
		if (dr->dr_zio)
			zio_nowait(dr->dr_zio);
	}
	/*
	 * Free intent log blocks up to this tx.
	 */
	zil_sync(os->os_zil, tx);
	os->os_phys->os_zil_header = os->os_zil_header;
	zio_nowait(zio);
}
Exemple #10
0
static int
traverse_visitbp(traverse_data_t *td, const dnode_phys_t *dnp,
    arc_buf_t *pbuf, blkptr_t *bp, const zbookmark_t *zb)
{
	zbookmark_t czb;
	int err = 0, lasterr = 0;
	arc_buf_t *buf = NULL;
	prefetch_data_t *pd = td->td_pfd;
	boolean_t hard = td->td_flags & TRAVERSE_HARD;

	if (bp->blk_birth == 0) {
		err = td->td_func(td->td_spa, NULL, NULL, pbuf, zb, dnp,
		    td->td_arg);
		return (err);
	}

	if (bp->blk_birth <= td->td_min_txg)
		return (0);

	if (pd && !pd->pd_exited &&
	    ((pd->pd_flags & TRAVERSE_PREFETCH_DATA) ||
	    BP_GET_TYPE(bp) == DMU_OT_DNODE || BP_GET_LEVEL(bp) > 0)) {
		mutex_enter(&pd->pd_mtx);
		ASSERT(pd->pd_blks_fetched >= 0);
		while (pd->pd_blks_fetched == 0 && !pd->pd_exited)
			cv_wait(&pd->pd_cv, &pd->pd_mtx);
		pd->pd_blks_fetched--;
		cv_broadcast(&pd->pd_cv);
		mutex_exit(&pd->pd_mtx);
	}

	if (td->td_flags & TRAVERSE_PRE) {
		err = td->td_func(td->td_spa, NULL, bp, pbuf, zb, dnp,
		    td->td_arg);
		if (err == TRAVERSE_VISIT_NO_CHILDREN)
			return (0);
		if (err)
			return (err);
	}

	if (BP_GET_LEVEL(bp) > 0) {
		uint32_t flags = ARC_WAIT;
		int i;
		blkptr_t *cbp;
		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;

		err = dsl_read(NULL, td->td_spa, bp, pbuf,
		    arc_getbuf_func, &buf,
		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
		if (err)
			return (err);

		/* recursively visitbp() blocks below this */
		cbp = buf->b_data;
		for (i = 0; i < epb; i++, cbp++) {
			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
			    zb->zb_level - 1,
			    zb->zb_blkid * epb + i);
			err = traverse_visitbp(td, dnp, buf, cbp, &czb);
			if (err) {
				if (!hard)
					break;
				lasterr = err;
			}
		}
	} else if (BP_GET_TYPE(bp) == DMU_OT_DNODE) {
Exemple #11
0
/* ARGSUSED */
static void
zil_prt_rec_write(zilog_t *zilog, int txtype, lr_write_t *lr)
{
	char *data, *dlimit;
	blkptr_t *bp = &lr->lr_blkptr;
	zbookmark_phys_t zb;
	char buf[SPA_MAXBLOCKSIZE];
	int verbose = MAX(dump_opt['d'], dump_opt['i']);
	int error;

	(void) printf("%sfoid %llu, offset %llx, length %llx\n", prefix,
	    (u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_offset,
	    (u_longlong_t)lr->lr_length);

	if (txtype == TX_WRITE2 || verbose < 5)
		return;

	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
		(void) printf("%shas blkptr, %s\n", prefix,
		    !BP_IS_HOLE(bp) &&
		    bp->blk_birth >= spa_first_txg(zilog->zl_spa) ?
		    "will claim" : "won't claim");
		print_log_bp(bp, prefix);

		if (BP_IS_HOLE(bp)) {
			(void) printf("\t\t\tLSIZE 0x%llx\n",
			    (u_longlong_t)BP_GET_LSIZE(bp));
			bzero(buf, sizeof (buf));
			(void) printf("%s<hole>\n", prefix);
			return;
		}
		if (bp->blk_birth < zilog->zl_header->zh_claim_txg) {
			(void) printf("%s<block already committed>\n", prefix);
			return;
		}

		SET_BOOKMARK(&zb, dmu_objset_id(zilog->zl_os),
		    lr->lr_foid, ZB_ZIL_LEVEL,
		    lr->lr_offset / BP_GET_LSIZE(bp));

		error = zio_wait(zio_read(NULL, zilog->zl_spa,
		    bp, buf, BP_GET_LSIZE(bp), NULL, NULL,
		    ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &zb));
		if (error)
			return;
		data = buf;
	} else {
		data = (char *)(lr + 1);
	}

	dlimit = data + MIN(lr->lr_length,
	    (verbose < 6 ? 20 : SPA_MAXBLOCKSIZE));

	(void) printf("%s", prefix);
	while (data < dlimit) {
		if (isprint(*data))
			(void) printf("%c ", *data);
		else
			(void) printf("%2hhX", *data);
		data++;
	}
	(void) printf("\n");
}
Exemple #12
0
static int
traverse_visitbp(traverse_data_t *td, const dnode_phys_t *dnp,
    const blkptr_t *bp, const zbookmark_t *zb)
{
	zbookmark_t czb;
	int err = 0, lasterr = 0;
	arc_buf_t *buf = NULL;
	prefetch_data_t *pd = td->td_pfd;
	boolean_t hard = td->td_flags & TRAVERSE_HARD;
	boolean_t pause = B_FALSE;

	switch (resume_skip_check(td, dnp, zb)) {
	case RESUME_SKIP_ALL:
		return (0);
	case RESUME_SKIP_CHILDREN:
		goto post;
	case RESUME_SKIP_NONE:
		break;
	default:
		ASSERT(0);
	}

	if (BP_IS_HOLE(bp)) {
		err = td->td_func(td->td_spa, NULL, NULL, zb, dnp, td->td_arg);
		return (err);
	}

	if (bp->blk_birth <= td->td_min_txg)
		return (0);

	if (pd && !pd->pd_exited &&
	    ((pd->pd_flags & TRAVERSE_PREFETCH_DATA) ||
	    BP_GET_TYPE(bp) == DMU_OT_DNODE || BP_GET_LEVEL(bp) > 0)) {
		mutex_enter(&pd->pd_mtx);
		ASSERT(pd->pd_blks_fetched >= 0);
		while (pd->pd_blks_fetched == 0 && !pd->pd_exited)
			cv_wait(&pd->pd_cv, &pd->pd_mtx);
		pd->pd_blks_fetched--;
		cv_broadcast(&pd->pd_cv);
		mutex_exit(&pd->pd_mtx);
	}

	if (td->td_flags & TRAVERSE_PRE) {
		err = td->td_func(td->td_spa, NULL, bp, zb, dnp,
		    td->td_arg);
		if (err == TRAVERSE_VISIT_NO_CHILDREN)
			return (0);
		if (err == ERESTART)
			pause = B_TRUE; /* handle pausing at a common point */
		if (err != 0)
			goto post;
	}

	if (BP_GET_LEVEL(bp) > 0) {
		uint32_t flags = ARC_WAIT;
		int i;
		blkptr_t *cbp;
		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;

		err = arc_read(NULL, td->td_spa, bp, arc_getbuf_func, &buf,
		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
		if (err)
			return (err);
		cbp = buf->b_data;

		for (i = 0; i < epb; i++) {
			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
			    zb->zb_level - 1,
			    zb->zb_blkid * epb + i);
			traverse_prefetch_metadata(td, &cbp[i], &czb);
		}

		/* recursively visitbp() blocks below this */
		for (i = 0; i < epb; i++) {
			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
			    zb->zb_level - 1,
			    zb->zb_blkid * epb + i);
			err = traverse_visitbp(td, dnp, &cbp[i], &czb);
			if (err) {
				if (!hard)
					break;
				lasterr = err;
			}
		}
	} else if (BP_GET_TYPE(bp) == DMU_OT_DNODE) {
Exemple #13
0
static int
traverse_visitbp(traverse_data_t *td, const dnode_phys_t *dnp,
    const blkptr_t *bp, const zbookmark_phys_t *zb)
{
	zbookmark_phys_t czb;
	int err = 0;
	arc_buf_t *buf = NULL;
	prefetch_data_t *pd = td->td_pfd;
	boolean_t hard = td->td_flags & TRAVERSE_HARD;

	switch (resume_skip_check(td, dnp, zb)) {
	case RESUME_SKIP_ALL:
		return (0);
	case RESUME_SKIP_CHILDREN:
		goto post;
	case RESUME_SKIP_NONE:
		break;
	default:
		ASSERT(0);
	}

	if (bp->blk_birth == 0) {
		/*
		 * Since this block has a birth time of 0 it must be one of
		 * two things: a hole created before the
		 * SPA_FEATURE_HOLE_BIRTH feature was enabled, or a hole
		 * which has always been a hole in an object.
		 *
		 * If a file is written sparsely, then the unwritten parts of
		 * the file were "always holes" -- that is, they have been
		 * holes since this object was allocated.  However, we (and
		 * our callers) can not necessarily tell when an object was
		 * allocated.  Therefore, if it's possible that this object
		 * was freed and then its object number reused, we need to
		 * visit all the holes with birth==0.
		 *
		 * If it isn't possible that the object number was reused,
		 * then if SPA_FEATURE_HOLE_BIRTH was enabled before we wrote
		 * all the blocks we will visit as part of this traversal,
		 * then this hole must have always existed, so we can skip
		 * it.  We visit blocks born after (exclusive) td_min_txg.
		 *
		 * Note that the meta-dnode cannot be reallocated.
		 */
		if (!send_holes_without_birth_time &&
		    (!td->td_realloc_possible ||
		    zb->zb_object == DMU_META_DNODE_OBJECT) &&
		    td->td_hole_birth_enabled_txg <= td->td_min_txg)
			return (0);
	} else if (bp->blk_birth <= td->td_min_txg) {
		return (0);
	}

	if (pd != NULL && !pd->pd_exited && prefetch_needed(pd, bp)) {
		uint64_t size = BP_GET_LSIZE(bp);
		mutex_enter(&pd->pd_mtx);
		ASSERT(pd->pd_bytes_fetched >= 0);
		while (pd->pd_bytes_fetched < size && !pd->pd_exited)
			cv_wait(&pd->pd_cv, &pd->pd_mtx);
		pd->pd_bytes_fetched -= size;
		cv_broadcast(&pd->pd_cv);
		mutex_exit(&pd->pd_mtx);
	}

	if (BP_IS_HOLE(bp)) {
		err = td->td_func(td->td_spa, NULL, bp, zb, dnp, td->td_arg);
		if (err != 0)
			goto post;
		return (0);
	}

	if (td->td_flags & TRAVERSE_PRE) {
		err = td->td_func(td->td_spa, NULL, bp, zb, dnp,
		    td->td_arg);
		if (err == TRAVERSE_VISIT_NO_CHILDREN)
			return (0);
		if (err != 0)
			goto post;
	}

	if (BP_GET_LEVEL(bp) > 0) {
		arc_flags_t flags = ARC_FLAG_WAIT;
		int i;
		blkptr_t *cbp;
		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;

		err = arc_read(NULL, td->td_spa, bp, arc_getbuf_func, &buf,
		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
		if (err != 0)
			goto post;
		cbp = buf->b_data;

		for (i = 0; i < epb; i++) {
			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
			    zb->zb_level - 1,
			    zb->zb_blkid * epb + i);
			traverse_prefetch_metadata(td, &cbp[i], &czb);
		}

		/* recursively visitbp() blocks below this */
		for (i = 0; i < epb; i++) {
			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
			    zb->zb_level - 1,
			    zb->zb_blkid * epb + i);
			err = traverse_visitbp(td, dnp, &cbp[i], &czb);
			if (err != 0)
				break;
		}
	} else if (BP_GET_TYPE(bp) == DMU_OT_DNODE) {
Exemple #14
0
static int
traverse_visitbp(traverse_data_t *td, const dnode_phys_t *dnp,
    const blkptr_t *bp, const zbookmark_phys_t *zb)
{
	zbookmark_phys_t czb;
	int err = 0;
	arc_buf_t *buf = NULL;
	prefetch_data_t *pd = td->td_pfd;
	boolean_t hard = td->td_flags & TRAVERSE_HARD;

	switch (resume_skip_check(td, dnp, zb)) {
	case RESUME_SKIP_ALL:
		return (0);
	case RESUME_SKIP_CHILDREN:
		goto post;
	case RESUME_SKIP_NONE:
		break;
	default:
		ASSERT(0);
	}

	if (bp->blk_birth == 0) {
		/*
		 * Since this block has a birth time of 0 it must be a
		 * hole created before the SPA_FEATURE_HOLE_BIRTH
		 * feature was enabled.  If SPA_FEATURE_HOLE_BIRTH
		 * was enabled before the min_txg for this traveral we
		 * know the hole must have been created before the
		 * min_txg for this traveral, so we can skip it. If
		 * SPA_FEATURE_HOLE_BIRTH was enabled after the min_txg
		 * for this traveral we cannot tell if the hole was
		 * created before or after the min_txg for this
		 * traversal, so we cannot skip it.
		 */
		if (td->td_hole_birth_enabled_txg < td->td_min_txg)
			return (0);
	} else if (bp->blk_birth <= td->td_min_txg) {
		return (0);
	}

	if (pd != NULL && !pd->pd_exited && prefetch_needed(pd, bp)) {
		mutex_enter(&pd->pd_mtx);
		ASSERT(pd->pd_blks_fetched >= 0);
		while (pd->pd_blks_fetched == 0 && !pd->pd_exited)
			cv_wait(&pd->pd_cv, &pd->pd_mtx);
		pd->pd_blks_fetched--;
		cv_broadcast(&pd->pd_cv);
		mutex_exit(&pd->pd_mtx);
	}

	if (BP_IS_HOLE(bp)) {
		err = td->td_func(td->td_spa, NULL, bp, zb, dnp, td->td_arg);
		if (err != 0)
			goto post;
		return (0);
	}

	if (td->td_flags & TRAVERSE_PRE) {
		err = td->td_func(td->td_spa, NULL, bp, zb, dnp,
		    td->td_arg);
		if (err == TRAVERSE_VISIT_NO_CHILDREN)
			return (0);
		if (err != 0)
			goto post;
	}

	if (BP_GET_LEVEL(bp) > 0) {
		arc_flags_t flags = ARC_FLAG_WAIT;
		int i;
		blkptr_t *cbp;
		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;

		err = arc_read(NULL, td->td_spa, bp, arc_getbuf_func, &buf,
		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
		if (err != 0)
			goto post;
		cbp = buf->b_data;

		for (i = 0; i < epb; i++) {
			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
			    zb->zb_level - 1,
			    zb->zb_blkid * epb + i);
			traverse_prefetch_metadata(td, &cbp[i], &czb);
		}

		/* recursively visitbp() blocks below this */
		for (i = 0; i < epb; i++) {
			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
			    zb->zb_level - 1,
			    zb->zb_blkid * epb + i);
			err = traverse_visitbp(td, dnp, &cbp[i], &czb);
			if (err != 0)
				break;
		}
	} else if (BP_GET_TYPE(bp) == DMU_OT_DNODE) {