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-rw-r--r--block_int.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/block_int.h b/block_int.h
index 96ff4cf1bc..f075a8cba5 100644
--- a/block_int.h
+++ b/block_int.h
@@ -243,7 +243,7 @@ static inline unsigned int get_physical_block_exp(BlockConf *conf)
_conf.logical_block_size, 512), \
DEFINE_PROP_UINT16("physical_block_size", _state, \
_conf.physical_block_size, 512), \
- DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 512), \
- DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 512)
+ DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0), \
+ DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0)
#endif /* BLOCK_INT_H */