Exemple #1
0
int
bplist_space(bplist_t *bpl, uint64_t *usedp, uint64_t *compp, uint64_t *uncompp)
{
	uint64_t itor = 0, comp = 0, uncomp = 0;
	int err;
	blkptr_t bp;

	mutex_enter(&bpl->bpl_lock);

	err = bplist_hold(bpl);
	if (err) {
		mutex_exit(&bpl->bpl_lock);
		return (err);
	}

	*usedp = bpl->bpl_phys->bpl_bytes;
	if (bpl->bpl_havecomp) {
		*compp = bpl->bpl_phys->bpl_comp;
		*uncompp = bpl->bpl_phys->bpl_uncomp;
	}
	mutex_exit(&bpl->bpl_lock);

	if (!bpl->bpl_havecomp) {
		while ((err = bplist_iterate(bpl, &itor, &bp)) == 0) {
			comp += BP_GET_PSIZE(&bp);
			uncomp += BP_GET_UCSIZE(&bp);
		}
		if (err == ENOENT)
			err = 0;
		*compp = comp;
		*uncompp = uncomp;
	}

	return (err);
}
int
bplist_enqueue(bplist_t *bpl, const blkptr_t *bp, dmu_tx_t *tx)
{
	uint64_t blk, off;
	blkptr_t *bparray;
	int err;

	ASSERT(!BP_IS_HOLE(bp));
	mutex_enter(&bpl->bpl_lock);
	err = bplist_hold(bpl);
	if (err)
		return (err);

	blk = bpl->bpl_phys->bpl_entries >> bpl->bpl_bpshift;
	off = P2PHASE(bpl->bpl_phys->bpl_entries, 1ULL << bpl->bpl_bpshift);

	err = bplist_cache(bpl, blk);
	if (err) {
		mutex_exit(&bpl->bpl_lock);
		return (err);
	}

	dmu_buf_will_dirty(bpl->bpl_cached_dbuf, tx);
	bparray = bpl->bpl_cached_dbuf->db_data;
	bparray[off] = *bp;

	/* We never need the fill count. */
	bparray[off].blk_fill = 0;

	/* The bplist will compress better if we can leave off the checksum */
	if (!BP_GET_DEDUP(&bparray[off]))
		bzero(&bparray[off].blk_cksum, sizeof (bparray[off].blk_cksum));

	dmu_buf_will_dirty(bpl->bpl_dbuf, tx);
	bpl->bpl_phys->bpl_entries++;
	bpl->bpl_phys->bpl_bytes +=
	    bp_get_dsize_sync(dmu_objset_spa(bpl->bpl_mos), bp);
	if (bpl->bpl_havecomp) {
		bpl->bpl_phys->bpl_comp += BP_GET_PSIZE(bp);
		bpl->bpl_phys->bpl_uncomp += BP_GET_UCSIZE(bp);
	}
	mutex_exit(&bpl->bpl_lock);

	return (0);
}
Exemple #3
0
static int
dump_data(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);


	/*
	 * If there is any kind of pending aggregation (currently either
	 * a grouping of free objects or free blocks), push it out to
	 * the stream, since aggregation can't be done across operations
	 * of different types.
	 */
	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;
	}
	/* write a DATA record */
	bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
	dsp->dsa_drr->drr_type = DRR_WRITE;
	drrw->drr_object = object;
	drrw->drr_type = type;
	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 (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0)
		return (EINTR);
	if (dump_bytes(dsp, data, blksz) != 0)
		return (EINTR);
	return (0);
}
Exemple #4
0
int
zio_checksum_error(zio_t *zio, zio_bad_cksum_t *info)
{
	blkptr_t *bp = zio->io_bp;
	uint_t checksum = (bp == NULL ? zio->io_prop.zp_checksum :
	    (BP_IS_GANG(bp) ? ZIO_CHECKSUM_GANG_HEADER : BP_GET_CHECKSUM(bp)));
	int error;
	uint64_t size = (bp == NULL ? zio->io_size :
	    (BP_IS_GANG(bp) ? SPA_GANGBLOCKSIZE : BP_GET_PSIZE(bp)));
	uint64_t offset = zio->io_offset;
	abd_t *data = zio->io_abd;
	spa_t *spa = zio->io_spa;

	error = zio_checksum_error_impl(spa, bp, checksum, data, size,
	    offset, info);
	if (error != 0 && zio_injection_enabled && !zio->io_error &&
	    (error = zio_handle_fault_injection(zio, ECKSUM)) != 0) {

		info->zbc_injected = 1;
		return (error);
	}
	return (error);
}
Exemple #5
0
static int
process_old_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
{
	struct process_old_arg *poa = arg;
	dsl_pool_t *dp = poa->ds->ds_dir->dd_pool;

	ASSERT(!BP_IS_HOLE(bp));

	if (bp->blk_birth <= dsl_dataset_phys(poa->ds)->ds_prev_snap_txg) {
		dsl_deadlist_insert(&poa->ds->ds_deadlist, bp, tx);
		if (poa->ds_prev && !poa->after_branch_point &&
		    bp->blk_birth >
		    dsl_dataset_phys(poa->ds_prev)->ds_prev_snap_txg) {
			dsl_dataset_phys(poa->ds_prev)->ds_unique_bytes +=
			    bp_get_dsize_sync(dp->dp_spa, bp);
		}
	} else {
		poa->used += bp_get_dsize_sync(dp->dp_spa, bp);
		poa->comp += BP_GET_PSIZE(bp);
		poa->uncomp += BP_GET_UCSIZE(bp);
		dsl_free_sync(poa->pio, dp, tx->tx_txg, bp);
	}
	return (0);
}
Exemple #6
0
int
zio_checksum_error(zio_t *zio, zio_bad_cksum_t *info)
{
	blkptr_t *bp = zio->io_bp;
	uint_t checksum = (bp == NULL ? zio->io_prop.zp_checksum :
	    (BP_IS_GANG(bp) ? ZIO_CHECKSUM_GANG_HEADER : BP_GET_CHECKSUM(bp)));
	int byteswap;
	int error;
	uint64_t size = (bp == NULL ? zio->io_size :
	    (BP_IS_GANG(bp) ? SPA_GANGBLOCKSIZE : BP_GET_PSIZE(bp)));
	uint64_t offset = zio->io_offset;
	void *data = zio->io_data;
	zio_checksum_info_t *ci = &zio_checksum_table[checksum];
	zio_cksum_t actual_cksum, expected_cksum, verifier;

	if (checksum >= ZIO_CHECKSUM_FUNCTIONS || ci->ci_func[0] == NULL)
		return (EINVAL);

	if (ci->ci_eck) {
		zio_eck_t *eck;

		if (checksum == ZIO_CHECKSUM_ZILOG2) {
			zil_chain_t *zilc = data;
			uint64_t nused;

			eck = &zilc->zc_eck;
			if (eck->zec_magic == ZEC_MAGIC)
				nused = zilc->zc_nused;
			else if (eck->zec_magic == BSWAP_64(ZEC_MAGIC))
				nused = BSWAP_64(zilc->zc_nused);
			else
				return (ECKSUM);

			if (nused > size)
				return (ECKSUM);

			size = P2ROUNDUP_TYPED(nused, ZIL_MIN_BLKSZ, uint64_t);
		} else {
			eck = (zio_eck_t *)((char *)data + size) - 1;
		}

		if (checksum == ZIO_CHECKSUM_GANG_HEADER)
			zio_checksum_gang_verifier(&verifier, bp);
		else if (checksum == ZIO_CHECKSUM_LABEL)
			zio_checksum_label_verifier(&verifier, offset);
		else
			verifier = bp->blk_cksum;

		byteswap = (eck->zec_magic == BSWAP_64(ZEC_MAGIC));

		if (byteswap)
			byteswap_uint64_array(&verifier, sizeof (zio_cksum_t));

		expected_cksum = eck->zec_cksum;
		eck->zec_cksum = verifier;
		ci->ci_func[byteswap](data, size, &actual_cksum);
		eck->zec_cksum = expected_cksum;

		if (byteswap)
			byteswap_uint64_array(&expected_cksum,
			    sizeof (zio_cksum_t));
	} else {
		ASSERT(!BP_IS_GANG(bp));
		byteswap = BP_SHOULD_BYTESWAP(bp);
		expected_cksum = bp->blk_cksum;
		ci->ci_func[byteswap](data, size, &actual_cksum);
	}

	info->zbc_expected = expected_cksum;
	info->zbc_actual = actual_cksum;
	info->zbc_checksum_name = ci->ci_name;
	info->zbc_byteswapped = byteswap;
	info->zbc_injected = 0;
	info->zbc_has_cksum = 1;

	if (!ZIO_CHECKSUM_EQUAL(actual_cksum, expected_cksum)) {
		return (ECKSUM);
    }

	if (zio_injection_enabled && !zio->io_error &&
	    (error = zio_handle_fault_injection(zio, ECKSUM)) != 0) {

		info->zbc_injected = 1;
		return (error);
	}

	return (0);
}
int
zio_checksum_error(zio_t *zio, zio_bad_cksum_t *info)
{
	blkptr_t *bp = zio->io_bp;
	uint_t checksum = (bp == NULL ? zio->io_prop.zp_checksum :
	    (BP_IS_GANG(bp) ? ZIO_CHECKSUM_GANG_HEADER : BP_GET_CHECKSUM(bp)));
	int byteswap;
	int error;
	uint64_t size = (bp == NULL ? zio->io_size :
	    (BP_IS_GANG(bp) ? SPA_GANGBLOCKSIZE : BP_GET_PSIZE(bp)));
	uint64_t offset = zio->io_offset;
	void *data = zio->io_data;
	zio_checksum_info_t *ci = &zio_checksum_table[checksum];
	zio_cksum_t actual_cksum, expected_cksum, verifier;

	if (checksum >= ZIO_CHECKSUM_FUNCTIONS || ci->ci_func[0] == NULL)
		return (SET_ERROR(EINVAL));

	if (ci->ci_eck) {
		zio_eck_t *eck;

		if (checksum == ZIO_CHECKSUM_ZILOG2) {
			zil_chain_t *zilc = data;
			uint64_t nused;

			eck = &zilc->zc_eck;
			if (eck->zec_magic == ZEC_MAGIC)
				nused = zilc->zc_nused;
			else if (eck->zec_magic == BSWAP_64(ZEC_MAGIC))
				nused = BSWAP_64(zilc->zc_nused);
			else
				return (SET_ERROR(ECKSUM));

			if (nused > size)
				return (SET_ERROR(ECKSUM));

			size = P2ROUNDUP_TYPED(nused, ZIL_MIN_BLKSZ, uint64_t);
		} else {
			eck = (zio_eck_t *)((char *)data + size) - 1;
		}

		if (checksum == ZIO_CHECKSUM_GANG_HEADER)
			zio_checksum_gang_verifier(&verifier, bp);
		else if (checksum == ZIO_CHECKSUM_LABEL)
			zio_checksum_label_verifier(&verifier, offset);
		else
			verifier = bp->blk_cksum;

		byteswap = (eck->zec_magic == BSWAP_64(ZEC_MAGIC));

		if (byteswap)
			byteswap_uint64_array(&verifier, sizeof (zio_cksum_t));

		expected_cksum = eck->zec_cksum;
		eck->zec_cksum = verifier;
		ci->ci_func[byteswap](data, size, &actual_cksum);
		eck->zec_cksum = expected_cksum;

		if (byteswap)
			byteswap_uint64_array(&expected_cksum,
			    sizeof (zio_cksum_t));
	} else {
		ASSERT(!BP_IS_GANG(bp));
		byteswap = BP_SHOULD_BYTESWAP(bp);
		expected_cksum = bp->blk_cksum;
		ci->ci_func[byteswap](data, size, &actual_cksum);
	}

	info->zbc_expected = expected_cksum;
	info->zbc_actual = actual_cksum;
	info->zbc_checksum_name = ci->ci_name;
	info->zbc_byteswapped = byteswap;
	info->zbc_injected = 0;
	info->zbc_has_cksum = 1;

	/*
	 * Special case for truncated checksums with crypto MAC
	 * This may not be the best place to deal with this but it is here now.
	 *
	 * Words 0 and 1 and 32 bits of word 2 of the checksum are the
	 * first 160 bytes of SHA256 hash.
	 * The rest of words 2 and all of word 3 are the crypto MAC so
	 * ignore those because we can't check them until we do the decryption
	 * later, nor could we do them if the key wasn't present
	 */
	if (ci->ci_trunc) {
	  if (!(0 == (
		      (actual_cksum.zc_word[0] - expected_cksum.zc_word[0]) |
		      (actual_cksum.zc_word[1] - expected_cksum.zc_word[1]) |
		      (BF64_GET(actual_cksum.zc_word[2], 0, 32) -
		       BF64_GET(expected_cksum.zc_word[2], 0, 32))))) {
            return (ECKSUM);
	  }
	} else if (!ZIO_CHECKSUM_EQUAL(actual_cksum, expected_cksum)) {
		return (SET_ERROR(ECKSUM));
	}

	if (zio_injection_enabled && !zio->io_error &&
	    (error = zio_handle_fault_injection(zio, ECKSUM)) != 0) {

		info->zbc_injected = 1;
		return (error);
	}

	return (0);
}