diff options
Diffstat (limited to 'libbcachefs/move.c')
| -rw-r--r-- | libbcachefs/move.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/libbcachefs/move.c b/libbcachefs/move.c index 8c95aa92..80909ae4 100644 --- a/libbcachefs/move.c +++ b/libbcachefs/move.c @@ -128,13 +128,15 @@ static int bch2_migrate_index_update(struct bch_write_op *op) op->opts.data_replicas); /* - * It's possible we race, and for whatever reason the extent now - * has fewer replicas than when we last looked at it - meaning - * we need to get a disk reservation here: + * If we're not fully overwriting @k, and it's compressed, we + * need a reservation for all the pointers in @insert */ nr = bch2_bkey_nr_dirty_ptrs(bkey_i_to_s_c(&insert->k_i)) - - (bch2_bkey_nr_dirty_ptrs(k) + m->nr_ptrs_reserved); - if (nr > 0) { + m->nr_ptrs_reserved; + + if (insert->k.size < k.k->size && + bch2_extent_is_compressed(k) && + nr > 0) { /* * can't call bch2_disk_reservation_add() with btree * locks held, at least not without a song and dance @@ -242,8 +244,16 @@ int bch2_migrate_write_init(struct bch_fs *c, struct migrate_write *m, switch (data_cmd) { case DATA_ADD_REPLICAS: { + /* + * DATA_ADD_REPLICAS is used for moving data to a different + * device in the background, and due to compression the new copy + * might take up more space than the old copy: + */ +#if 0 int nr = (int) io_opts.data_replicas - bch2_bkey_nr_dirty_ptrs(k); +#endif + int nr = (int) io_opts.data_replicas; if (nr > 0) { m->op.nr_replicas = m->nr_ptrs_reserved = nr; |