fs/zfs/metaslab.c

558 	 * have any space until we finish syncing out this txg.
1429 metaslab_init(metaslab_group_t *mg, uint64_t id, uint64_t object, uint64_t txg,
1474 	 * If we're opening an existing pool (txg == 0) or creating
1475 	 * a new one (txg == TXG_INITIAL), all space is available now.
1477 	 * does not become available until after this txg has synced.
1479 	if (txg <= TXG_INITIAL)
1493 	if (txg != 0) {
1494 		vdev_dirty(vd, 0, NULL, txg);
1495 		vdev_dirty(vd, VDD_METASLAB, ms, txg);
1608 		uint64_t txg = spa_syncing_txg(spa);
1613 			vdev_dirty(vd, VDD_METASLAB, msp, txg + 1);
1614 			spa_dbgmsg(spa, "txg %llu, requesting force condense: "
1615 			    "msp %p, vd %p", txg, msp, vd);
1805 		 * that force condensing happens in the next txg.
1913 metaslab_condense(metaslab_t *msp, uint64_t txg, dmu_tx_t *tx)
1916 	range_tree_t *freetree = msp->ms_freetree[txg & TXG_MASK];
1925 	spa_dbgmsg(spa, "condensing: txg %llu, msp[%llu] %p, vdev id %llu, "
1926 	    "spa %s, smp size %llu, segments %lu, forcing condense=%s", txg,
1936 	 * that have been freed in this txg, any deferred frees that exist,
1945 	 * Remove what's been freed in this txg from the condense_tree.
1947 	 * this txg are in the freetree.
1957 		range_tree_walk(msp->ms_alloctree[(txg + t) & TXG_MASK],
1967 	 * for the ms_tree as all other range trees use per txg
1998 metaslab_sync(metaslab_t *msp, uint64_t txg)
2004 	range_tree_t *alloctree = msp->ms_alloctree[txg & TXG_MASK];
2005 	range_tree_t **freetree = &msp->ms_freetree[txg & TXG_MASK];
2007 	    &msp->ms_freetree[TXG_CLEAN(txg) & TXG_MASK];
2038 	 * be modifying this txg's alloctree, freetree, freed_tree, or
2045 	tx = dmu_tx_create_assigned(spa_get_dsl(spa), txg);
2072 		metaslab_condense(msp, txg, tx);
2090 		 * exisiting histogram with what was freed in this txg. This
2102 	 * For sync pass 1, we avoid traversing this txg's free range tree
2114 	ASSERT0(range_tree_space(msp->ms_alloctree[txg & TXG_MASK]));
2115 	ASSERT0(range_tree_space(msp->ms_freetree[txg & TXG_MASK]));
2132 metaslab_sync_done(metaslab_t *msp, uint64_t txg)
2149 	if (msp->ms_freetree[TXG_CLEAN(txg) & TXG_MASK] == NULL) {
2170 	freed_tree = &msp->ms_freetree[TXG_CLEAN(txg) & TXG_MASK];
2171 	defer_tree = &msp->ms_defertree[txg % TXG_DEFER_SIZE];
2179 	ASSERT0(range_tree_space(msp->ms_alloctree[txg & TXG_MASK]));
2180 	ASSERT0(range_tree_space(msp->ms_freetree[txg & TXG_MASK]));
2208 		vdev_dirty(vd, VDD_METASLAB, msp, txg + 1);
2211 	if (msp->ms_loaded && msp->ms_access_txg < txg) {
2214 			    msp->ms_alloctree[(txg + t) & TXG_MASK]));
2305     uint64_t txg, uint64_t min_distance, dva_t *dva, int d)
2330 				    "requirement: vdev %llu, txg %llu, mg %p, "
2333 				    mg->mg_vd->vdev_id, txg,
2409 	if (range_tree_space(msp->ms_alloctree[txg & TXG_MASK]) == 0)
2410 		vdev_dirty(mg->mg_vd, VDD_METASLAB, msp, txg);
2412 	range_tree_add(msp->ms_alloctree[txg & TXG_MASK], offset, asize);
2413 	msp->ms_access_txg = txg + metaslab_unload_delay;
2424     dva_t *dva, int d, dva_t *hintdva, uint64_t txg, int flags)
2552 		uint64_t offset = metaslab_group_alloc(mg, asize, txg,
2651 metaslab_free_dva(spa_t *spa, const dva_t *dva, uint64_t txg, boolean_t now)
2661 	if (txg > spa_freeze_txg(spa))
2680 		range_tree_remove(msp->ms_alloctree[txg & TXG_MASK],
2692 		if (range_tree_space(msp->ms_freetree[txg & TXG_MASK]) == 0)
2693 			vdev_dirty(vd, VDD_METASLAB, msp, txg);
2694 		range_tree_add(msp->ms_freetree[txg & TXG_MASK],
2708 metaslab_claim_dva(spa_t *spa, const dva_t *dva, uint64_t txg)
2730 	if ((txg != 0 && spa_writeable(spa)) || !msp->ms_loaded)
2736 	if (error || txg == 0) {	/* txg == 0 indicates dry run */
2748 		if (range_tree_space(msp->ms_alloctree[txg & TXG_MASK]) == 0)
2749 			vdev_dirty(vd, VDD_METASLAB, msp, txg);
2750 		range_tree_add(msp->ms_alloctree[txg & TXG_MASK], offset, size);
2808     int ndvas, uint64_t txg, blkptr_t *hintbp, int flags, zio_t *zio)
2830 		    txg, flags);
2833 				metaslab_free_dva(spa, &dva[d], txg, B_TRUE);
2855 	BP_SET_BIRTH(bp, txg, txg);
2861 metaslab_free(spa_t *spa, const blkptr_t *bp, uint64_t txg, boolean_t now)
2872 		metaslab_free_dva(spa, &dva[d], txg, now);
2878 metaslab_claim(spa_t *spa, const blkptr_t *bp, uint64_t txg)
2886 	if (txg != 0) {
2898 		if ((error = metaslab_claim_dva(spa, &dva[d], txg)) != 0)
2903 	ASSERT(error == 0 || txg == 0);